CN203025340U

Movatterモバイル変換

Info

Publication number: CN203025340U
Application number: CN 201320026745
Authority: CN
Inventors: 罗力
Original assignee: SHENZHEN RAYOUNG TECHNOLOGY Co Ltd
Current assignee: SHENZHEN RAYOUNG TECHNOLOGY Co Ltd
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-06-26
Anticipated expiration: 2023-01-18

Abstract

The utility model discloses a text fixture detecting system. The text fixture detecting system comprises a computer, a sampled machine test point analogue circuit board and a USB (Universal Serial Bus) high-speed measuring module, wherein a measuring circuit and a data acquisition circuit are internally arranged in the USB high-speed measuring module; the USB high-speed measuring module is connected with the computer and the sampled machine test point analogue circuit board respectively, and is used for transmitting the acquired data of the sampled machine test point analogue circuit board to the computer. The test fixture detecting system disclosed by the utility model is safe and reliable, capable of precisely inspecting the fixture needle bed, capable of accurately reflecting the contact condition of the test needle on the fixture and the tested circuit board, and capable of ensuring that the fixture manufacturer and the electronic product manufacturer quickly and accurately find the fixture problems. Moreover, the text fixture detecting system can be timely improved, so that the working efficiency is improved and the investment cost can be reduced.

Description

The measurement jig detection system

Technical field

The utility model relates to the technical field of electronic circuit board, is specifically related to a kind of measurement jig detection system.

Background technology

at present, the electronic circuit board integrated level is more and more higher, and is also more and more higher for the precision requirement of the measurement jig of electronic circuit board PCBA, and the test point on electronic product wiring board PCBA reaches＜requirement of 0.3mm, conventional needle adopts usually to the method for measurement jig check in model PCBA access authentic testing environment, whether the position contact well checks to testing needle, the method not only needs tool manufacturer that tool is delivered to use producer to test, also need to use producer to provide this electronic circuit board relevant speciality personnel analyze and search problem, find to send again after problem and return tool manufacturer and modify, for the inaccurate tool that causes line short in test needle-bar location, also can cause damage to model machine, particularly to the large user of same model tool demand, coming into operation of new product device for testing needs a large amount of manpowers of cost and time cost to drop into to complete check.

The utility model content

The utility model has overcome the deficiencies in the prior art, and a kind of measurement measurement jig detection system easily is provided.

Consider the problems referred to above of prior art, according to an aspect of the present utility model, for solving above-mentioned technical matters, the utility model by the following technical solutions:

A kind of measurement jig detection system comprises:

Computing machine;

Measurement jig;

Tested model machine test point analog circuit board, described tested model machine test point analog circuit board is positioned on measurement jig;

USB high speed measurement module, the built-in metering circuit of described USB high speed measurement module and data acquisition circuit, described USB high speed measurement module respectively with computing machine be connected model machine test point analog circuit board and be connected, the tested model machine test point analog circuit board data transmission that is used for gathering is to computing machine.

In order to realize better the utility model, further technical scheme is:

According to an embodiment of the present utility model, described USB high speed measurement module is connected by the USB connecting line with computing machine.

According to an embodiment of the present utility model, described computing machine is notebook.

According to an embodiment of the present utility model, described USB high speed measurement module comprises accurate constant voltage power supply circuit and measurement port, and described accurate constant voltage power supply circuit is used for providing stable constant voltage to measurement port.

According to an embodiment of the present utility model, described stable constant voltage is 3.3V.

According to an embodiment of the present utility model, be connected with high-accuracy resistance on described each measurement port.

According to an embodiment of the present utility model, also comprise processor and A/D modular converter and USB control chip in described USB high speed measurement module, the voltage signal that described accurate constant voltage power supply circuit produces transfers data to the USB control chip by processor and A/D modular converter, and the USB control chip is transferred to computing machine with data by USB interface.

According to an embodiment of the present utility model, described processor is 16 high-speed digital signal processors.

According to an embodiment of the present utility model, comprise also in described USB high speed measurement module that sample frequency produces circuit and data buffer, described sample frequency produces circuit and is connected with data buffer with the A/D modular converter and is connected.

The utility model can also be:

According to an embodiment of the present utility model, the data that described USB control chip is controlled and gathered sample frequency are processed.

Compared with prior art, one of the beneficial effects of the utility model are:

Measurement jig detection system of the present utility model, (1) have safe and reliable, can realize the needle-bar rigorous examination to measurement jig, the situation that contacts that accurately reflects testing needle and circuit-under-test plate on measurement jig by measuring contact resistance, can allow measurement jig manufacturer and electronic product manufacturing firm find fast and accurately the problem of measurement jig, and in time improve, improved work efficiency, reduced input cost;

(2) the utility model is powerful, simple to operate, accurately measure fast the situation that contacts of each testing needle and test point, for electronics manufacturing enterprise has saved a large amount of production setup time and making time, accurate measurement jig also provides reliable guarantee for product quality.

Description of drawings

For clearer explanation present specification embodiment or technical scheme of the prior art, the below will do simple the introduction to the accompanying drawing of required use in the description of embodiment or prior art, apparently, the accompanying drawing that the following describes is only the reference to some embodiment in present specification, for those skilled in the art, in the situation that do not pay creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 shows the structural representation according to the measurement jig detection system of an embodiment of the utility model.

Embodiment

Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.

Fig. 1 shows the structural representation according to the measurement jig detection system of an embodiment of the utility model.The embodiment of tool detection system as shown in Figure 1, comprise that USB high speed measurement module 101(can be USB high-speed multiple channel measurement module), Demo PCBA (tested model machine test point analog circuit board) 102,USB connecting line 103, Demo PCBA (tested model machine test point analog circuit board) 102 is positioned onmeasurement jig 105, also can comprise USB enlarging lens (not shown in figure 1).

Described USB highspeed measurement module 101 respectively withcomputing machine 104 be connected model machine test pointanalog circuit board 102 and be connected, be used for the data transmission of the tested model machine test pointanalog circuit board 102 that will gather to computingmachine 104.

In Fig. 1, USB high-speed multiple channel measurement module can be measured the opening of 30 passages nearly, short-circuit condition and resistance value simultaneously, built-in metering circuit and data acquisition circuit, connect by measurement interface, there is common interface to be connected with USB highspeed measurement module 101 on Demo PCBA (tested model machine test point analog circuit board) 102, forms measuring circuit; The data transmission that USB highspeed measurement module 101 gathers is to computingmachine 104, then data are carried out computational analysis, judges connection status and the contact resistance value of each port, then judges the situation that contacts of testing needle and test point onmeasurement jig 105.

Adopt portable notebook computerconvenient measurement jig 105 to be tested.

In another embodiment of the present utility model, USB high-speed multiple channel measurement module gathers when can realize 250Ks/s, 30 passages of 16 figure places.Accurate constant voltage power supply circuit provides stable 3.3V constant voltage to be given to measurement port, be connected with high-accuracy resistance on each measurement port, form the multichannel voltage measuring circuit with measurement port, voltage signal is transferred data to the USB control chip by 16 high-speed digital signal processors and A/D modular converter, and the USB control chip is transferred to computing machine with data by USB interface.Sample frequency generation circuit is connected with the FIFO(data buffer with the A/D conversion and is connected, and the storage of analog to digital conversion at a high speed and data is provided; The data that the USB control chip is controlled and gathered sample frequency are processed.

At first bring into operation at computing machine, and check by USB interface whether USB high-speed multiple channel measurement module connects normally, and whether prompting USB high speed measurement module there is connection; When USB high speed measurement module not detected, computing machine will be forbidden measurement jig is tested, and connect and just can carry out next step operation when normal when USB high speed measurement module being detected.

At first operating personnel need to select the measurement jig model of check, Demo PCBA, measurement jig are connected on USB high speed measurement module by the test winding displacement, and " beginning test " button of click, system begins to carry out test; Be transferred to computing machine after the voltage acquisition of USB high speed measurement module to each passage, the contact condition of each lane testing pin of judgement and circuit board test point after the voltage data computational analysis that computing machine passes through to gather, analyzing it is whether open circuit, short circuit be normal, and shows resistance value and the integration test result of each passage.

In sum, the present utility model adopts USB high-speed multiple channel resistance measurement and open-short circuit module, circuit board in conjunction with the design of test product prototyping testing point distribution simulation, test winding displacement connecting test tool and analog circuit board, by USB, the multi-channel measurement module is connected to portable notebook computer, just can quick and precisely measure on tool the situation that contacts of test point on each testing needle and circuit board after operation, comprise open circuit, short circuit and contact resistance, detection time is less than 3s; Do not need professional and Special circuit board testing tool, can not cause damage to the model machine circuit yet, operating personnel just can realize fast a large amount of tools being tested, and have saved human and material resources and time cost to tool manufacturer and electronic product manufacturing firm.

In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part cross-references gets final product.

Although with reference to a plurality of explanatory embodiment of the present utility model, the utility model is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.

Claims

1. a measurement jig detection system, is characterized in that, comprising:

Computing machine;

Measurement jig;

2. measurement jig detection system according to claim 1, is characterized in that, described USB high speed measurement module is connected by the USB connecting line with computing machine.

3. measurement jig detection system according to claim 1, is characterized in that, described computing machine is notebook.

4. measurement jig detection system according to claim 1, is characterized in that, described USB high speed measurement module comprises accurate constant voltage power supply circuit and measurement port, and described accurate constant voltage power supply circuit is used for providing stable constant voltage to measurement port.

5. measurement jig detection system according to claim 4, is characterized in that, described stable constant voltage is 3.3V.

6. according to claim 4 or 5 described measurement jig detection systems, is characterized in that, is connected with high-accuracy resistance on described each measurement port.

7. measurement jig detection system according to claim 6, it is characterized in that, also comprise processor and A/D modular converter and USB control chip in described USB high speed measurement module, the voltage signal that described accurate constant voltage power supply circuit produces transfers data to the USB control chip by processor and A/D modular converter, and the USB control chip is transferred to computing machine with data by USB interface.

8. measurement jig detection system according to claim 7, is characterized in that, described processor is 16 high-speed digital signal processors.

9. according to claim 7 or 8 described measurement jig detection systems, it is characterized in that, comprise also in described USB high speed measurement module that sample frequency produces circuit and data buffer, described sample frequency produces circuit and is connected with data buffer with the A/D modular converter and is connected.

10. measurement jig detection system according to claim 9, is characterized in that, the data that described USB control chip is controlled and gathered sample frequency are processed.