CN114441946B

Movatterモバイル変換

Info

Publication number: CN114441946B
Application number: CN202210340934.4A
Authority: CN
Inventors: 谢铭盛
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-10
Anticipated expiration: 2042-04-02
Also published as: CN114441946A

Abstract

The invention provides a magnetic conduction device, an electric control board test system and an electric control board test method, and relates to the technical field of test, wherein the magnetic conduction device is used for testing an electric control board, a magnetic detection unit for detecting the change of a magnetic field is arranged on the electric control board, and the magnetic conduction device comprises: the magnetic induction circuit is used for detecting the change of a magnetic field and generating an induction electric signal when the magnetic field changes; and the electromagnetic induction coil is electrically connected with the magnetic induction circuit and generates a magnetic field based on the induced electrical signal. This kind of magnetic conduction device can conduct the magnetic field change of electric motor rotor etc. to the electromagnetic induction coil on, during the test automatically controlled board, automatically controlled board only needs to detect the magnetic field change on the electromagnetic induction coil, and does not need the magnetic field change of direct detection motor element etc. to when actual test, just need not with automatically controlled board direct mount to motor element etc. on, just so solved every hall element on the makeup of automatically controlled board and can not carry out the problem that the feedback detected to electric motor rotor magnetic pole magnetic field.

Description

Magnetic conduction device, electric control board test system and electric control board test method

Technical Field

The invention relates to the technical field of testing, in particular to a magnetic conduction device, an electric control board testing system and an electric control board testing method.

Background

The existing motor with Hall elements is designed by splicing plates, when the FCT test is carried out on the electric control plates, in view of the reason that the sizes among the splicing plates and the motor size are not matched, each Hall element on the splicing plates cannot carry out feedback detection on a magnetic pole magnetic field of a motor rotor, only independent test of single plates after board splitting can be carried out, and each motor is responsible for single plate test of one electric control plate. The test mode reduces the production efficiency and enables the manufacturing cost of the product to be higher.

Therefore, how to design a device and a testing method for detecting the magnetic field of the magnetic pole of the motor rotor by each hall element on the jointed board in a feedback manner so that the electric control board does not need to be divided into a plurality of single boards for testing during testing becomes a problem to be solved at present.

Disclosure of Invention

The invention aims to at least solve the problems of low production efficiency and high cost of the electric control board caused by the fact that the electric control board of the motor and the like in the prior art or the related art can only carry out single-board independent test after board division.

It is therefore an object of the present invention to provide a magnetically conducting device.

Another object of the present invention is to provide an electronic control board testing system.

The third purpose of the invention is to provide an electric control board testing method.

In order to achieve the above object, a first aspect of the present invention provides a magnetic conduction device for testing an electric control board, the electric control board having a magnetic detection unit, the magnetic conduction device comprising: a circuit substrate for mounting on the magnetism generating device; a magnetic induction circuit mounted on the circuit substrate for inducing a change in the magnetic field generated by the magnetic generation device and generating an induced electrical signal when the magnetic field is changed; the electromagnetic induction coil is arranged corresponding to the magnetic detection unit, is electrically connected with the magnetic induction circuit and can generate a magnetic field based on an induced electrical signal; the magnetic field change generated by the magnetic generation device can be transferred to the electromagnetic induction coil through the magnetic conduction device, and when the electric control board is tested, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

In the above technical solution, the magnetic conduction apparatus further includes: and the coil control circuit is connected with the electromagnetic induction coil and used for adjusting the size of the magnetic field generated by the electromagnetic induction coil according to the induction electric signal.

In the technical scheme, the coil control circuit is mainly used for controlling the size and the direction of a magnetic field on the electromagnetic induction coil. Because the distance between the magnetic induction circuit and the magnetic generation device such as the motor component and the like and the amplification power of the signal amplification circuit and the like can influence the magnitude of the output induction electric signal, the magnetic field simulated by the electromagnetic induction coil can better meet the actual requirement, and the interference of the magnetic field generated by the electromagnetic induction coil on other magnetic detection units on the electric control board can be avoided, so that the magnitude of the magnetic field generated by the electromagnetic induction coil can be reasonably controlled through the coil control circuit.

Meanwhile, in order to avoid the electromagnetic induction coil from interfering with other magnetic detection units (generally, hall sensors) on the electric control board, the relative position and the relative installation angle between the electromagnetic induction coil and the electric control board need to be set reasonably.

In addition, current veneer test, each veneer all need through workman plug power cord, and the test mode that this application provided does not need repeated plug power cord, therefore makes the production processes of automatically controlled board more continuous, is fit for streamlined production, so has improved the production efficiency of automatically controlled board, has reduced the manufacturing cost of automatically controlled board.

The FCT (functional Test) refers to a Test method for providing a simulated operating environment (excitation and load) for a Test target board (UUT: Unit Under Test) to enable the Test target board to work in various design states, and thus obtaining parameters of each state to verify the function of the UUT. Simply put, the UUT is loaded with the appropriate stimulus and the output response is measured for compliance. The functional test of PCBA (printed Circuit Board Assembly), that is, the printed Circuit Board, is generally specified.

The magnetic conduction device in the present application can be used for FCT detection of the electric control board of the motor with the hall element, but is not limited to FCT detection of the electric control board of the motor with the hall element, and the magnetic conduction device can be used for conducting magnetic field changes in the function tests of other electric control boards with the hall element.

The electromagnetic induction coil in the application is a multi-turn coil with at least two turns. The output magnetic field is controlled in real time according to the requirement by the electromagnetic induction principle.

In the application, when the magnetic conduction device is used for testing the electric control board of the motor, the magnetic field change of the rotor of the motor can be conducted to the electromagnetic induction coil by the magnetic conduction device, and the electric control board can detect the magnetic field change of the electromagnetic induction coil, so that the rotating speed change of the motor can be known, and therefore whether the motor works normally can be determined based on the rotating speed change of the motor, so that the performance of the electric control board can be determined based on the working state of the motor, and the performance test of the electric control board is achieved.

In addition, the magnetic conduction device provided by the application also has the following additional technical characteristics:

furthermore, the electromagnetic induction coil, the magnetic induction circuit and the coil control circuit are combined into a closed loop, so that when the magnetic induction circuit induces the change of the magnetic field to generate an induced electric signal, the induced electric signal can enable the electromagnetic induction coil to generate current, and further enable the electromagnetic induction coil to generate the magnetic field.

Further, the induced electrical signal is a pulse signal, which is consistent with the pulse of the signal sent by the rotor magnetic pole at the motor end.

In the above technical solution, the magnetic conduction apparatus further includes: and the signal amplification circuit is connected with the magnetic induction circuit, amplifies the induced electrical signal from the magnetic induction circuit and transmits the amplified induced electrical signal to the coil control circuit.

In the technical scheme, the signal amplification circuit mainly comprises an operational amplifier and the like, and mainly amplifies the induction electric signal so as to generate a magnetic field by using the amplified induction electric signal in the following process. The signal amplification circuit can amplify signals, so that subsequent operation is more convenient and accurate.

Besides the operational amplifier, the signal amplifying circuit can also comprise conventional circuit devices such as a resistor, a capacitor and the like.

Further, the coil control circuit includes a resistance device, and a resistance value of the resistance device can be adjusted.

In this technical scheme, coil control circuit includes resistance device, for example sliding resistor, alright change the magnetic field of electromagnetic induction coil through the resistance value of adjusting resistance device, realizes the regulation to the electric current size on the electromagnetic induction coil to realize the regulation to the magnetic field size that the electromagnetic induction coil produced.

In any of the above technical solutions, the magnetic induction circuit includes a magnetic induction element, and the magnetic induction element is used to detect a magnetic field change of an environment where the magnetic induction element is located, for example, when the electronic control board is tested, the magnetic induction element may be installed on a rotor of the motor to induce the magnetic field change of the rotor of the motor. The magnetic induction element may be embodied as a hall sensor.

In any of the above technical solutions, the magnetic induction circuit, the signal amplification circuit, and the coil control circuit are disposed on the circuit substrate. Furthermore, a first port is arranged on the circuit substrate, and the electromagnetic induction coil is electrically connected with the magnetic induction circuit through the first port.

In this embodiment, the magnetic conduction device further includes a circuit board. The circuit substrate is used for being installed on a motor assembly and the like, and the circuit substrate is used as a base of the magnetic induction circuit and the signal amplification circuit and used for bearing and installing various parts such as the magnetic induction circuit and the signal amplification circuit. Meanwhile, a port is arranged on the circuit substrate and used for connecting the input and the output of a power supply or a signal. Specifically, in order to transmit an output signal of the magnetic induction circuit or the signal amplification circuit to the electromagnetic induction coil, a first port may be provided on the circuit substrate to output an induced electric signal. And the electromagnetic induction coil can be connected with the first port through a wire and the like and then electrically connected with the magnetic induction circuit or the signal amplification circuit based on the first port.

Further, the magnetic conduction device further includes: and the lead is used for connecting the first port and the electromagnetic induction coil so as to electrically connect the magnetic induction circuit and the electromagnetic induction coil. Also connect through the wire between electromagnetic induction coil and the first port for when automatically controlled board test, electromagnetic induction coil's position can be adjusted at will, thereby makes electromagnetic induction coil's spatial position better arrange, just so realized a magnetic conduction device that can long distance, nimble conduction.

Of course, the electromagnetic coil and the first port may be connected by a mechanical terminal or the like, and at this time, the position flexibility of the electromagnetic coil is slightly inferior.

Further, a mounting structure adapted to the magnetism generating device is provided on the circuit board, and the circuit board can be mounted on the magnetism generating device through the mounting structure. The mounting structure can realize the position fixation of the magnetic generating device relative to the motor assembly, thereby more accurately detecting the magnetic field change of the magnetic generating device such as the motor assembly.

Further, the mounting structure is a mounting hole or a mounting notch provided on the circuit substrate. The mounting hole or the mounting notch is matched with the shape of the magnetic generating device such as the motor component and the like so as to be sleeved and mounted on the magnetic generating device such as the motor component and the like.

Further, the circuit board is flat and semicircular.

Furthermore, the magnetic induction circuit and the circuit substrate are of an integrated structure, namely the magnetic induction circuit and the circuit substrate are mounted together, namely the magnetic induction circuit is located outside the detection of the rotor magnetic pole of the detection motor and outside the detection of the electric control plate.

Further, a second port for turning on a power supply and a third port for signal input are provided on the circuit substrate.

In any of the above technical solutions, the number of the magnetic induction circuits and the number of the electromagnetic induction coils are plural, and the plurality of electromagnetic induction coils and the plurality of magnetic induction circuits are arranged in a one-to-one correspondence.

In the technical scheme, three Hall sensors are generally arranged on one electric control board corresponding to three-phase current. Therefore, a magnetic induction circuit and an electromagnetic induction coil are correspondingly arranged for each hall sensor. That is, the number of the magnetic induction circuits and the number of the electromagnetic induction coils correspond to the hall sensors on the electric control board.

Further, a plurality of magnetic induction circuits are mounted on the same circuit substrate.

Wherein, an electric control board is generally provided with three Hall sensors corresponding to three-phase current. Therefore, an electromagnetic induction coil and a magnetic induction circuit are correspondingly arranged for each hall sensor. That is, the number of the electromagnetic induction coils and the magnetic induction circuits corresponds to the number of the hall sensors on the electric control board.

Furthermore, the electric control board comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with electromagnetic induction coils and magnetic induction circuits; a plurality of magnetic induction circuits corresponding to the same jointed board are arranged on the same substrate. That is, a jigsaw is provided with a set of magnetic conduction device, and a set of magnetic conduction device comprises a plurality of electromagnetic induction coils, a plurality of magnetic induction circuits, a plurality of coil control circuits and a substrate. Generally, a panel is provided with a set of magnetically conductive means. One set of magnetic conduction device includes three electromagnetic induction coils and three magnetic induction circuit, three coil control circuit and a base plate.

In the application, the test control system is mainly used for completing test work, for example, generation of a test report of the electric control board is performed based on test data, or different instructions are issued to the electric control board based on requirements to be tested, so that different working environments are simulated, and the like. Further, the test control system may include a display screen to display operation data of the motor assembly and the like, so as to conveniently judge whether the motor assembly is normally operated, thereby determining whether the performance of the electric control board is normal.

In any of the above technical solutions, the magnetic detection unit includes a hall sensor. That is, the hall sensor is arranged on the electric control board to feed back the magnetic field generated by the motor and the like, so that the electric control board can conveniently feed back and control the work of the motor component and the like.

Furthermore, the electric control plates are splicing plates, the number of the splicing plates is consistent with that of the magnetic conduction devices, and a set of magnetic conduction devices is correspondingly arranged for each splicing plate to conduct the magnetic field. Therefore, different splicing plates of the electric control plate can be tested simultaneously. Of course, different splice plates can also share one set of magnetic conduction device to test in sequence.

Wherein the magnetic detection unit comprises a hall sensor. Because the hall sensor is a relatively common device for detecting the change of the magnetic field, the hall sensor is easy to purchase, and the cost of the product can be reduced.

Further, the magnetism generating device is a motor assembly, that is, a mechanical component of a normal motor (not including a motor control board), and further, the magnetism generating device includes a rotor of the motor assembly, that is, the magnetic induction circuit in the present application is mainly used for detecting a change of a magnetic field generated by the rotor of the motor. That is, the magnetic conduction device in this application is to transfer the magnetic field variation of the motor rotor to the magnetic field variation of the electromagnetic induction coil.

The technical solution of the third aspect of the present invention provides an electronic control board testing method, which is used in the electronic control board testing system provided in any one of the technical solutions of the second aspect, and the electronic control board testing method includes: the magnetic conduction device senses the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal; the electromagnetic induction coil generates a magnetic field based on the induction electric signal; the magnetic detection unit detects a magnetic field generated by the electromagnetic induction coil; the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit; the test control system acquires the running data of the magnetic generation device in the test process through the electric control board as the test data of the electric control board; the magnetic field change generated by the magnetic generation device can be transferred to the electromagnetic induction coil through the magnetic conduction device, and when the electric control board is tested, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

Further, the magnetic conduction device used in the method for testing the electronic control board is the magnetic conduction device provided in any embodiment of the first aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic circuit diagram of a magnetic conduction device according to an embodiment of the present invention;

fig. 2 is a schematic circuit structure diagram of an electronic control board testing system provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a magnetic conduction device provided by an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a magnetic conduction device provided by an embodiment of the present invention;

fig. 5 is a schematic view of another configuration of a magnetically conducting device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of the 1 st electronic control board testing system provided by the embodiment of the invention;

fig. 7 is a schematic structural diagram of a 2 nd electronic control board testing system provided by the embodiment of the invention;

fig. 8 is a schematic structural diagram of the 3 rd electronic control board testing system provided by the embodiment of the invention;

fig. 9 is a schematic structural diagram of the 4 th electronic control board testing system provided by the embodiment of the invention;

fig. 10 is a schematic structural diagram of a 5 th structure of an electronic control board testing system provided by an embodiment of the invention;

fig. 11 is a schematic flow chart of an electric control board testing method according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 10 is:

the magnetic induction type electromagnetic switch comprises anelectronic control board 1, amotor component 2, amagnetic conduction device 3, amagnetic induction circuit 30, amagnetic induction element 302, asignal amplification circuit 32, anelectromagnetic induction coil 34, acoil control circuit 36, aresistance device 362, acircuit substrate 38, a mountingnotch 382 and alead 39.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Themagnetic conduction device 3 and the electronic control board test system provided by the embodiment of the present application are described below with reference to fig. 1 to 10.

Example one

As shown in fig. 1 and fig. 3 to 5, an embodiment of the first aspect of the present invention provides amagnetic conduction device 3 for testing anelectronic control board 1, a magnetic detection unit is provided on theelectronic control board 1, and themagnetic conduction device 3 includes anelectromagnetic induction coil 34 and amagnetic induction circuit 30, and alead wire 39 electrically connecting theelectromagnetic induction coil 34 and themagnetic induction circuit 30, and acircuit substrate 38 for mounting themagnetic induction circuit 30 and the like. Thecircuit board 38 is for mounting on the magnetism generating device. Themagnetic induction circuit 30 is mounted on thecircuit substrate 38 for detecting a change in a magnetic field in which themagnetic induction circuit 30 is located. Themagnetic induction circuit 30 generates an induced electric signal when the magnetic field changes. Theelectromagnetic induction coil 34 is capable of generating a magnetic field based on an induced electric signal and is provided corresponding to the magnetic detection unit. Themagnetic conduction device 3 can transfer the magnetic field change generated by the magnetic generation device such as themotor assembly 2 to theelectromagnetic induction coil 34, when theelectric control board 1 is tested, theelectric control board 1 detects the magnetic field change generated by theelectromagnetic induction coil 34 through the magnetic detection unit, and uses the detected magnetic field change as the magnetic field change generated by the magnetic generation device, so that the magnetic field change generated by the magnetic generation device can be acquired without installing theelectric control board 1 on the magnetic generation device, and the work of the magnetic generation device such as themotor assembly 2 is controlled. Thereafter, the operation data of the magnetic generating devices such as themotor assembly 2 acquired by theelectric control board 1 can be used as the test data of theelectric control board 1, and whether theelectric control board 1 meets the requirements or not can be judged through the data.

Further, themagnetic induction circuit 30 and theelectromagnetic induction coil 34 are electrically connected through awire 39, so that the position of theelectromagnetic induction coil 34 can be adjusted at will, and the spatial position of theelectromagnetic induction coil 34 is better arranged.

As shown in fig. 1 and 2, themagnetic conduction apparatus 3 further includes acoil control circuit 36 connected to theelectromagnetic induction coil 34 for adjusting the magnitude of the magnetic field generated by theelectromagnetic induction coil 34 according to the induced electrical signal. Thecoil control circuit 36 is mainly used for controlling the magnitude and direction of the magnetic field on theelectromagnetic induction coil 34. Because the distance between themagnetic induction circuit 30 and the magnetic generation device such as themotor assembly 2, the amplification power of thesignal amplification circuit 32, and the like all affect the magnitude of the output induced electrical signal, in order to make the magnetic field simulated by theelectromagnetic induction coil 34 more meet the actual requirement, the magnetic field generated by theelectromagnetic induction coil 34 is also prevented from generating interference on other magnetic detection units on theelectric control board 1, so that the magnitude of the magnetic field generated by theelectromagnetic induction coil 34 can be adaptively adjusted through thecoil control circuit 36.

In addition, current veneer test, each veneer all need through workman plug power cord, and the test mode that this application provided does not need repeated plug power cord, therefore makes the production processes of automatically controlledboard 1 more continuous, is fit for streamlined production, so improved the production efficiency of automatically controlledboard 1, reduced the manufacturing cost of automatically controlledboard 1.

The FCT (functional Test) refers to a Test method for providing a simulated operating environment (excitation and load) for a Test target board (UUT: Unit Under Test) to enable the Test target board to work in various design states, and thus obtaining parameters of each state to verify the function of the UUT. Simply put, the UUT is loaded with the appropriate stimulus and the output response is measured for compliance. Generally, refers specifically to functional testing of the PCBA.

Themagnetic conduction device 3 in the present application can be used for FCT detection of the electric control board of the motor with hall element, but is not limited to FCT detection of the electric control board of the motor with hall element, and themagnetic conduction device 3 can be used for conducting magnetic field changes in the function test of other electric control boards with hall elements.

Further, thecoil control circuit 36 includes aresistance device 362. The resistance of theresistance device 362 can be adjusted.

In this embodiment, as shown in fig. 3 and fig. 5, thecoil control circuit 36 includes aresistance device 362, such as a sliding resistor, and the magnetic field of theelectromagnetic induction coil 34 can be changed by adjusting the resistance value of theresistance device 362, so as to adjust the magnitude of the current on theelectromagnetic induction coil 34.

In the above embodiment, as shown in fig. 4 and 5, themagnetic induction circuit 30 includes themagnetic induction element 302, and themagnetic induction element 302 is used for detecting the magnetic field change of the environment where themagnetic induction element 302 is located, for example, when theelectronic control board 1 is tested, themagnetic induction element 302 may be mounted to the rotor of the motor to induce the magnetic field change of the rotor of the motor. Themagnetic induction element 302 may be embodied as a hall sensor.

In any of the above embodiments, as shown in fig. 3 to 5, themagnetic induction circuit 30, thesignal amplification circuit 32, and thecoil control circuit 36 are provided on thecircuit substrate 38. Further, thecircuit substrate 38 is provided with a first port connected to themagnetic induction circuit 30. Theelectromagnetic coil 34 is electrically connected to themagnetic induction circuitry 30 through the first port. The first port and theelectromagnetic coil 34 are connected by awire 39.

In this embodiment, thecircuit substrate 38 is used for mounting on themotor assembly 2 and the like, and thecircuit substrate 38 serves as a base for themagnetic induction circuit 30 and thesignal amplification circuit 32, and is used for carrying and mounting various components such as themagnetic induction circuit 30 and thesignal amplification circuit 32. Meanwhile, a port is provided on thecircuit substrate 38 for connecting input and output of power or signals. Specifically, in order to transmit the output signal of themagnetic induction circuit 30 or thesignal amplification circuit 32 to theelectromagnetic induction coil 34, a first port may be provided on thecircuit substrate 38 to output an induced electric signal. Theelectromagnetic induction coil 34 may be connected to the first port through awire 39 or the like, and then electrically connected to themagnetic induction circuit 30 or thesignal amplification circuit 32 based on the first port, thereby achieving electrical connection between themagnetic induction circuit 30 and theelectromagnetic induction coil 34.

Further, as shown in fig. 7 to 9, a mounting structure adapted to the magnetism generating device is provided on thecircuit substrate 38, and thecircuit substrate 38 can be mounted on the magnetism generating device by the mounting structure. The mounting structure can fix the position of the magnetic generator relative to themotor assembly 2, thereby more accurately detecting the magnetic field change of the magnetic generator such as themotor assembly 2.

Further, as shown in fig. 3 and 4, the mounting structure is a mounting hole or mountingnotch 382 provided on thecircuit substrate 38. The mounting hole or mountingnotch 382 is adapted to the shape of the magnetic generating device such as themotor assembly 2, so as to be capable of being sleeved and mounted on the magnetic generating device such as themotor assembly 2.

Further, as shown in fig. 3 and 4, thecircuit board 38 has a semicircular flat shape.

Further, themagnetic induction circuit 30 and thecircuit substrate 38 are of an integrated structure, that is, themagnetic induction circuit 30 is mounted with thecircuit substrate 38, that is, themagnetic induction circuit 30 is located outside the detection of the rotor magnetic poles of the detection motor and outside the detection of theelectronic control board 1. Of course, themagnetic induction circuit 30 may be only partially fixed to thecircuit substrate 38, and may not be partially fixed to thecircuit substrate 38, for example, themagnetic induction element 302 may be provided on thecircuit substrate 38, and thesignal amplification circuit 32 and the like may be provided separately from thecircuit substrate 38.

Further, thecircuit board 38 is provided with a second port for turning on the power supply. And a third port for signal input is provided on thecircuit substrate 38.

In any of the above embodiments, the number of themagnetic induction circuits 30 and the number of the electromagnetic induction coils 34 are plural, and the plurality of electromagnetic induction coils 34 and the plurality ofmagnetic induction circuits 30 are provided in one-to-one correspondence.

In this embodiment, three hall sensors are provided on oneelectronic control board 1, typically corresponding to three-phase currents. Therefore, themagnetic induction circuit 30 and theelectromagnetic induction coil 34 are provided for each hall sensor. That is, the number of themagnetic induction circuits 30 and the number of the electromagnetic induction coils 34 correspond to the hall sensors on theelectronic control board 1.

Further, a plurality ofmagnetic induction circuits 30 are mounted on thesame circuit substrate 38.

Wherein, three hall sensors are generally arranged on oneelectric control board 1 corresponding to three-phase current. Therefore, theelectromagnetic induction coil 34 and themagnetic induction circuit 30 are provided for each hall sensor. That is, the number of the electromagnetic induction coils 34 and themagnetic induction circuits 30 corresponds to the number of the hall sensors on theelectronic control board 1.

Further, theelectric control board 1 comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with anelectromagnetic induction coil 34 and amagnetic induction circuit 30; a plurality ofmagnetic induction circuits 30 provided corresponding to the same jointed board are mounted on the same substrate. That is, one panel is provided with a set ofmagnetic conduction devices 3, and a set ofmagnetic conduction devices 3 includes a plurality of electromagnetic induction coils 34, a plurality ofmagnetic induction circuits 30, a plurality ofcoil control circuits 36 and a substrate. Generally, a panel is provided with a set ofmagnetic conduction devices 3, and the set ofmagnetic conduction devices 3 includes three electromagnetic induction coils 34 and threemagnetic induction circuits 30, threecoil control circuits 36 and a substrate. The magnetic field change generated by the electromagnetic induction coil and the magnetic field change generated by the motor rotor and the like are not required to be completely consistent, but the frequency requirement is consistent, that is, the magnetic field intensity generated by the electromagnetic induction coil and the magnetic field intensity generated by the motor rotor and the like can be consistent or inconsistent. In the practical process, the installation position and the angle of the electromagnetic induction coil relative to the electric control board are reasonably adjusted so as to avoid the electromagnetic induction coil from interfering the work of other magnetic detection units (generally Hall sensors) on the electric control board.

Example two

As shown in fig. 1 and 2, example 2 of the first aspect of the present invention provides amagnetic conduction apparatus 3. This embodiment differs from the first embodiment mainly in that the magnetic conducting means 3 further comprises asignal amplifying circuit 32.

Specifically, themagnetic conduction device 3 includes: anelectromagnetic induction coil 34, amagnetic induction circuit 30, acoil control circuit 36, and asignal amplification circuit 32. Themagnetic induction circuit 30 is used for detecting the change of the magnetic field of themagnetic conduction device 3. Themagnetic induction circuit 30 generates an induced electric signal when the magnetic field changes. Thecoil control circuit 36 is connected to theelectromagnetic induction coil 34, and can adjust the magnitude of the magnetic field generated by theelectromagnetic induction coil 34 in accordance with the induced electric signal. Thesignal amplifier circuit 32 is connected to themagnetic induction circuit 30, amplifies the induced electric signal from themagnetic induction circuit 30, and transmits the amplified signal to thecoil control circuit 36.

In this embodiment, thesignal amplifying circuit 32 is mainly composed of an operational amplifier and the like, and it mainly amplifies the signal of themagnetic induction circuit 30 and the like in stages so that the magnetic field can be generated by the amplified induced electrical signal in the following. Thesignal amplification circuit 32 can amplify the signal, so that the subsequent operation is more convenient and accurate.

Further, as shown in fig. 3 and 5, thecoil control circuit 36 includes aresistance device 362. The resistance of theresistance device 362 can be adjusted.

In this embodiment, thecoil control circuit 36 includes aresistance device 362, such as a sliding resistor, and the magnetic field of theelectromagnetic induction coil 34 can be changed by adjusting the resistance value of theresistance device 362, so as to adjust the magnitude of the current on theelectromagnetic induction coil 34.

In any of the above embodiments, themagnetic induction circuit 30, thesignal amplification circuit 32, and thecoil control circuit 36 are provided on thecircuit substrate 38. Further, thecircuit substrate 38 is provided with a first port connected to themagnetic induction circuit 30. Theelectromagnetic coil 34 is electrically connected to themagnetic induction circuitry 30 through the first port.

In this embodiment, thecircuit substrate 38 is used for mounting on themotor assembly 2 and the like, and thecircuit substrate 38 serves as a base for themagnetic induction circuit 30 and thesignal amplification circuit 32, and is used for carrying and mounting various components such as themagnetic induction circuit 30 and thesignal amplification circuit 32. Meanwhile, a port is provided on thecircuit substrate 38 for connecting input and output of power or signals. Specifically, in order to transmit the output signal of themagnetic induction circuit 30 or thesignal amplification circuit 32 to theelectromagnetic induction coil 34, a first port may be provided on thecircuit substrate 38 to output an induced electric signal. Theelectromagnetic induction coil 34 may be connected to the first port via awire 39 or the like, and then electrically connected to themagnetic induction circuit 30 or thesignal amplification circuit 32 based on the first port.

Further, a mounting structure adapted to the magnetism generating device is provided on thecircuit board 38, and thecircuit board 38 can be mounted on the magnetism generating device via the mounting structure. The mounting structure can fix the position of the magnetic generator relative to themotor assembly 2, thereby more accurately detecting the magnetic field change of the magnetic generator such as themotor assembly 2.

Further, as shown in fig. 8, 9 and 10, the mounting structure is a mounting hole or mountingnotch 382 provided on thecircuit substrate 38. The mounting hole or the mountingnotch 382 is adapted to the shape of the magnetic generating device such as themotor module 2 so that thecircuit board 38 can be mounted on the magnetic generating device such as themotor module 2.

Further, thecircuit board 38 is flat and semicircular.

Further, as shown in fig. 7, 8 and 9, themagnetic induction circuit 30 and thecircuit substrate 38 are of an integral structure, that is, themagnetic induction circuit 30 is mounted with thecircuit substrate 38, that is, themagnetic induction circuit 30 is located outside the detection of the rotor magnetic poles of the detection motor and outside the detection of theelectronic control board 1.

Further, as shown in fig. 7 to 9, a plurality ofmagnetic induction circuits 30 are mounted on thesame circuit substrate 38.

Further, theelectric control board 1 comprises a plurality of jointed boards, each jointed board is provided with a plurality of magnetic detection units, and the magnetic detection units on the same jointed board are correspondingly provided with anelectromagnetic induction coil 34 and amagnetic induction circuit 30; a plurality ofmagnetic induction circuits 30 provided corresponding to the same jointed board are mounted on the same substrate. That is, one panel is provided with a set ofmagnetic conduction devices 3, and a set ofmagnetic conduction devices 3 includes a plurality of electromagnetic induction coils 34, a plurality ofmagnetic induction circuits 30, a plurality ofcoil control circuits 36 and a substrate. Generally, a panel is provided with a set of magneticallyconductive means 3. A set of magnetic conducting means 3 comprises three electromagnetic induction coils 34 and threemagnetic induction circuits 30, threecoil control circuits 36 and a substrate.

The test control system is mainly used for completing test work, for example, generating a test report of theelectric control board 1 based on test data, or issuing different instructions to theelectric control board 1 based on the requirement to be tested so as to simulate different working environments and the like. The test control system can comprise a display screen to display the running data of themotor assembly 2 and the like, so that whether themotor assembly 2 works normally or not can be conveniently judged, and whether the performance of theelectric control board 1 is normal or not can be determined.

In any of the above embodiments, the magnetic detection unit comprises a hall sensor. That is, the hall sensor is arranged on theelectric control board 1 to feed back the magnetic field generated by the motor and the like, thereby facilitating theelectric control board 1 to feed back the work of themotor component 2 and the like.

Further, theelectric control plate 1 is a splice plate, the number of the splice plates is consistent with that of themagnetic conduction devices 3, and a set ofmagnetic conduction devices 3 is correspondingly arranged for each splice plate to conduct the magnetic field. Thus, different splicing plates of theelectric control plate 1 can be tested simultaneously. Of course, different splice plates can also share one set ofmagnetic conduction device 3 for testing in sequence.

As shown in fig. 11, an embodiment of a third aspect of the present invention provides an electronic control board testing method, which is used in the electronic control board testing system provided in any one of the technical solutions of the second aspect, to test an electronic control board, where a magnetic detection unit is disposed on anelectronic control board 1, and the electronic control board testing method includes:

s110, the magnetic induction circuit induces the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal;

s112, the electromagnetic induction coil generates a magnetic field based on the induction electric signal;

s114, detecting a magnetic field generated by the electromagnetic induction coil by the magnetic detection unit;

s116, the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit;

and S118, the test control system obtains the operation data of the magnetic generation device in the test process through the electric control board as the test data of the electric control board.

Themagnetic conduction device 3 can transfer the magnetic field change generated by the magnetic generation device such as themotor assembly 2 to theelectromagnetic induction coil 34, when theelectric control board 1 is tested, theelectric control board 1 detects the magnetic field change generated by theelectromagnetic induction coil 34 through the magnetic detection unit, and uses the detected magnetic field change as the magnetic field change generated by the magnetic generation device, so that the magnetic field change generated by the magnetic generation device can be acquired without installing theelectric control board 1 on the magnetic generation device, and the work of the magnetic generation device such as themotor assembly 2 is controlled. Thereafter, the operation data of the magnetic generating devices such as themotor assembly 2 acquired by theelectric control board 1 can be used as the test data of theelectric control board 1, and whether theelectric control board 1 meets the requirements or not can be judged through the data.

Further, themagnetic conduction device 3 used in the electric control board testing method is themagnetic conduction device 3 provided in any one of the embodiments of the first aspect.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present specification, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a magnetic conduction device which characterized in that for automatically controlled board test, be provided with magnetism detecting element on the automatically controlled board, magnetic conduction device includes:

a circuit substrate for mounting on the magnetism generating device;

the magnetic induction circuit is arranged on the circuit substrate and used for inducing the change of the magnetic field generated by the magnetic generation device and generating an induced electric signal under the condition that the magnetic field is changed;

the electromagnetic induction coil is arranged corresponding to the magnetic detection unit, is electrically connected with the magnetic induction circuit and can generate a magnetic field based on the induced electric signals;

the magnetic conduction device can transfer the magnetic field change generated by the magnetic generation device to the electromagnetic induction coil, and when the electric control board is used for testing, the electric control board detects the magnetic field change generated by the electromagnetic induction coil through the magnetic detection unit and takes the detected magnetic field change as the magnetic field change generated by the magnetic generation device.

2. The magnetic conduction device of claim 1, further comprising:

and the coil control circuit is connected with the electromagnetic induction coil and used for adjusting the size of the magnetic field generated by the electromagnetic induction coil according to the induction electric signal.

3. The magnetic conduction device according to claim 2, wherein the coil control circuit comprises a resistive device, the resistance of which is adjustable.

4. The magnetic conduction device of claim 2, further comprising:

and the signal amplification circuit is connected with the magnetic induction circuit, amplifies the induced electrical signals from the magnetic induction circuit and transmits the amplified induced electrical signals to the coil control circuit.

5. The magnetic conduction device according to claim 4, wherein the magnetic induction circuitry, the signal amplification circuitry, and the coil control circuitry are disposed on the circuit substrate.

6. The magnetic conduction device of claim 5, wherein the circuit substrate is provided with a first port, and the electromagnetic coil is electrically connected to the magnetic induction circuit through the first port.

7. The magnetic conduction device of claim 6, further comprising:

a wire for connecting the first port and the electromagnetic induction coil so that the magnetic induction circuit and the electromagnetic induction coil are electrically connected.

8. The magnetic conduction device of claim 7, wherein the circuit substrate has a mounting structure disposed thereon.

9. The magnetic conduction device of claim 8, wherein the mounting structure is a mounting hole or a mounting notch provided on the circuit substrate.

10. The magnetic conduction device according to any of claims 1 to 9, wherein the magnetic induction circuitry comprises a magnetic induction element for detecting changes in the magnetic field of the environment in which it is located.

11. The magnetic conduction device according to any one of claims 1 to 9, wherein the number of the magnetic induction circuits and the number of the electromagnetic induction coils are plural, and the plural electromagnetic induction coils and the plural magnetic induction circuits are provided in one-to-one correspondence; the plurality of magnetic induction circuits are mounted on the same circuit substrate.

12. An electronic control board test system, comprising:

a magnetic generating device for generating a varying magnetic field;

the magnetic field generating device comprises an electric control board to be tested, wherein a magnetic detection unit is arranged on the electric control board, and the electric control board can control the magnetic generating device to generate a magnetic field based on detection data of the magnetic detection unit;

the magnetic conduction device according to any one of claims 1 to 11, wherein a magnetic induction circuit of the magnetic conduction device is provided in correspondence with the magnetic generation device, and an electromagnetic induction coil of the magnetic conduction device is provided in correspondence with the magnetic detection unit, and the magnetic detection unit is capable of detecting a magnetic field generated by the electromagnetic induction coil;

the test control system is connected with the electric control board to control the work of the electric control board, and obtains the operation data of the magnetic generation device from the electric control board as the test data of the electric control board;

13. The electronically controlled board testing system of claim 12, wherein the magnetic detection unit comprises a hall sensor.

14. The electronic control board testing system according to claim 12 or 13, wherein the magnetic generating device is a motor assembly.

15. An electronic control board test method for the electronic control board test system according to any one of claims 12 to 14, the electronic control board test method comprising:

the magnetic induction circuit induces the magnetic field change generated by the magnetic generation device and converts the magnetic field change into an induced electrical signal;

the electromagnetic induction coil generates a magnetic field based on the induced electrical signal;

the magnetic detection unit detects a magnetic field generated by the electromagnetic induction coil;

the electric control board controls the work of the magnetic generation device based on the detection data of the magnetic detection unit;

the test control system acquires the operation data of the magnetic generation device through the electric control board as the test data of the electric control board;