Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the electricity-saving electroscope with the battery monitoring function, so that the problems that the accuracy of an electricity-checking result is affected and the service life of the battery is short due to the fact that the existing electroscope is continuously used in a battery under-voltage state are solved, and the effects of reducing energy consumption, prolonging the service life of the battery and effectively monitoring the voltage of the battery are achieved.
In order to solve the technical problems, the invention adopts the following technical scheme:
The electricity-saving electroscope with the battery monitoring function comprises a functional circuit board, wherein the functional circuit board is connected with a battery; the function circuit board includes battery power monitoring status indication unit, battery power monitoring status indication unit includes:
A tenth resistor; the first end of the tenth resistor is connected with the anode of the battery, and the second end of the tenth resistor is connected with the cathode of the battery through the eleventh resistor;
a second light emitting diode and a third light emitting diode; anodes of the second light-emitting diode and the third light-emitting diode are connected with the anode of the battery;
a voltage reference; the reference input end of the voltage reference device is connected with the second end of the tenth resistor, the control output end of the voltage reference device is connected with the cathode of the second light-emitting diode through the twelfth resistor, and the negative electrode ground end of the voltage reference device is connected with the negative electrode of the battery;
A third triode; the base of the third triode is connected with the control output end of the voltage reference device through a fourteenth resistor, the collector of the third triode is connected with the cathode of the third light emitting diode through a thirteenth resistor, the emitter of the third triode is connected with the cathode of the battery, and a fifteenth resistor is connected between the base and the emitter of the third triode.
The electroscope monitors the voltage of the battery through the battery electric quantity monitoring state indicating unit, and after the reference voltage is set, the voltage of the battery can be indicated to be in a normal voltage state or an under-voltage state through the lighting of the second light emitting diode and the third light emitting diode respectively, so that a user is timely prompted to replace a new battery, and the influence on the accuracy of an electricity testing result caused by continuous use of the battery under-voltage state is avoided.
The technical scheme is further improved, the intelligent battery monitoring device further comprises a high-voltage probe, the high-voltage probe is connected with the functional circuit board, the functional circuit board further comprises a digital logic control chip, the digital logic control chip is connected with a real-time wake-up control circuit unit, and the real-time wake-up control circuit unit is connected with the battery electric quantity monitoring state indicating unit;
The real-time wake-up control circuit unit comprises a fourth triode; the base of the fourth triode is connected with the cathode of the third diode through a sixteenth resistor, the anode of the third diode is connected with the digital logic control chip, the emitter of the fourth triode is connected with the cathode of the battery, the second end of the tenth resistor is connected with the collector of the fourth triode through an eleventh resistor, and the cathode ground end of the voltage reference device and the emitter of the third triode are connected with the collector of the fourth triode.
In this way, the battery electric quantity monitoring state indicating unit is connected with the digital logic control chip through the real-time wake-up control circuit unit, and starts working when the battery voltage monitoring is needed; the control circuit unit and the digital logic control chip are awakened in real time, so that the electroscope can enter an automatic sleep state when not in use at ordinary times, and meanwhile, the on-off function of the output of the whole battery is controlled, all circuits except the battery are turned off to be electrified when the electroscope is in standby and not in use, the effect that the output of the battery is approximately equal to the self-consumption value of the battery in the automatic sleep state is achieved, and the service life of the battery is prolonged.
Compared with the prior art, the invention has the following beneficial effects:
According to the electroscope, the voltage of the battery is effectively monitored through the battery electric quantity monitoring state indicating unit, after the reference voltage is set, if the voltage of the battery is larger than the reference voltage, the second light emitting diode is lightened, and the second light emitting diode can be green when the second light emitting diode is lightened and indicates that the battery is at normal voltage; if the voltage of the battery is smaller than the reference voltage, the third LED is lighted, and the third LED can be red when being lighted and indicates that the battery is in an under-voltage state and should be replaced in time. The control circuit unit and the digital logic control chip are awakened in real time to enable the electroscope to enter an automatic sleep state when not used at ordinary times, and meanwhile, the switch and switch functions of the whole battery are controlled, so that all circuits except the battery are powered on when the electroscope is not used in standby, the effect that the battery output is approximately equal to the self-consumption value of the battery when in the automatic sleep state is achieved, and the service life of the battery is prolonged.
Drawings
FIG. 1 is a functional circuit block diagram of an embodiment of the present invention;
FIG. 2 is a functional schematic diagram of an embodiment of the present invention;
FIG. 3 is a schematic diagram corresponding to the functional schematic diagram and block diagram of the embodiment of the present invention;
FIG. 4 is a schematic diagram of an electroscope according to an embodiment of the present invention;
FIG. 5 is an exploded view of an electroscope according to an embodiment of the present invention;
wherein, the high-voltage probe 1, the battery 2, the battery box 21, the functional circuit board 3, the acquisition unit 31, the self-checking key unit 311, the high-voltage clamping circuit unit 312, the coupling unit 32, the high-voltage conversion control unit 33, the digital logic control chip 34, the oscillation unit 35, the driving unit 36, the audible and visual alarm prompting unit 37, the buzzer 371, the battery electric quantity monitoring state indicating unit 38, the real-time wake-up control circuit unit 39, the upper shell 4, the key 41, the light transmission window 42, the infrared light transmission cover 5, the sound transmission hole 51, the shell base 6,
A first diode D1, a second diode D2, a light emitting diode D3, a light emitting diode D301, a second light emitting diode D4, a third light emitting diode D5, a third diode D6,
Seventeenth resistor R1, eighteenth resistor R101, nineteenth resistor R2, twentieth resistor R201, third resistor R3, twenty-first resistor R4, twenty-second resistor R402, twenty-third resistor R401, fifth resistor R5, sixth resistor R6, seventh resistor R7, eighth resistor R8, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, fourteenth resistor R14, fifteenth resistor R15, sixteenth resistor R16,
The self-checking switch S1 is provided with a self-checking switch,
A first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4,
The first capacitor C1, the second capacitor C2, the third capacitor C3,
Voltage reference U1.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Referring to fig. 1 to 5, a battery-monitoring electricity-saving electroscope according to an embodiment of the present invention includes a high voltage probe 1, the high voltage probe 1 is connected with a functional circuit board 3, and the functional circuit board 3 is connected with a battery 2; the functional circuit board 3 comprises a digital logic control chip 34, a battery power monitoring state indicating unit 38 and a real-time wake-up control circuit unit 39;
The digital logic control chip 34 is connected with the real-time wake-up control circuit unit 39, and the real-time wake-up control circuit unit 39 is connected with the battery electric quantity monitoring state indicating unit 38;
The battery level monitor status indication unit 38 includes:
A tenth resistor R10, wherein a first end of the tenth resistor R10 is connected with the positive electrode of the battery 2;
The anodes of the second light-emitting diode D4 and the third light-emitting diode D5 are connected with the anode of the battery 2;
the reference input end of the voltage reference U1 is connected with the second end of the tenth resistor R10, and the control output end of the voltage reference U1 is connected with the cathode of the second light-emitting diode D4 through the twelfth resistor R12;
the base electrode of the third triode Q3 is connected with the control output end of the voltage reference U1 through a fourteenth resistor R14; the collector of the third triode Q3 is connected with the cathode of the third light emitting diode D5 through a thirteenth resistor R13, and a fifteenth resistor R15 is connected between the base and the emitter of the third triode Q3;
The real-time wake-up control circuit unit 39 includes a fourth triode Q4, a base electrode of the fourth triode Q4 is connected with a cathode of a third diode D6 through a sixteenth resistor R16, an anode of the third diode D6 is connected with the digital logic control chip 34, an emitter of the fourth triode Q4 is connected with a cathode of the battery 2, a second end of the tenth resistor R10 is connected with a collector of the fourth triode Q4 through an eleventh resistor R11, and the collector Q4 of the fourth triode is further connected with a cathode ground end of the voltage reference unit U1 and an emitter of the third triode Q3.
In this way, the battery power monitoring state indicating unit 38 monitors the voltage of the battery 2, and after setting the reference voltage, if the voltage of the battery 2 is equal to or higher than the upper limit reference voltage value, the second light emitting diode D4 is turned on, and the second light emitting diode D4 is turned on to be green and indicates that the battery 2 is at the normal voltage; if the voltage of the battery 2 is equal to or lower than the lower limit reference voltage value, the third light emitting diode D5 is turned on, and the third light emitting diode D5 is turned on to be red to indicate that the battery 2 is in an under-voltage state, and the battery 2 should be replaced in time. In this embodiment, the second led D4 is turned on and indicated as green when the voltage of the battery 2 is DC5.1V and above, and the third led D5 is turned on and indicated as red when the voltage of the battery 2 is DV5.0V and below, so as to prompt the user to replace the battery 2 in time.
The real-time wake-up control circuit unit 39 and the digital logic control chip 34 can enable the electroscope to enter an automatic sleep state when not in use at ordinary times, and simultaneously control the on-off function of the output of the whole battery 2, so that all circuits except the battery 2 are powered on when the electroscope is not in use in a standby mode, the effect that the output of the battery 2 is approximately equal to the self-consumption value of the battery 2 in the automatic sleep state is achieved, and the service life of the battery 2 is prolonged; when the battery electric quantity is monitored and indicated, a digital logic control chip 34 outputs high level to the base electrode of a fourth triode Q4 through a third diode D6, the fourth triode Q4 is enabled to work in a switching state and is opened, a circuit loop is conducted, a battery electric quantity monitoring state indicating unit 38 is enabled to work, according to a set reference voltage, a voltage dividing resistor consisting of a tenth resistor R10 and an eleventh resistor R11 carries out real-time acquisition on the voltage of the battery 2 and is transmitted to a reference input end of a voltage reference U1 according to a calculated ratio of an upper limit DV5.1V (normal state) to a lower limit DC5.0V (undervoltage state), when the voltage of the battery 2 is DC5.1V or above, the voltage reference U1 works in a reference upper limit state, a control output end of the voltage reference U1 outputs low level, a cathode end of the second light emitting diode D4 is conducted through a twelfth resistor R12 to light the second light emitting diode D4 and is indicated as green, and when the green light indicates that the voltage of the battery 2 is in the normal state; when the voltage of the battery 2 is DC5.0V and below, the voltage reference U1 works in a reference lower limit state, the control output end of the voltage reference U1 outputs high level, the high level passes through the current limiting resistor of the fourteenth resistor R14 and simultaneously pulls down the resistor to the base electrode of the third triode Q3 through the fifteenth resistor R15 to enable the third triode Q3 to be conducted and work in a switch conducting state, at the moment, the cathode end of the third light-emitting diode D5 is conducted through the thirteenth resistor R13 to light the third light-emitting diode D5 and indicate red color, and when the red light is lighted, the voltage of the battery 2 is indicated to be in an undervoltage state; and entering a power saving mode after the fourth triode Q4 is automatically cut off and opened.
The functional circuit board 3 further comprises an acquisition unit 31, a coupling unit 32, a high-voltage conversion control unit 33, an oscillation unit 35, a driving unit 36 and an acousto-optic alarm prompting unit 37;
the high-voltage probe 1 is connected with the acquisition unit 31, the acquisition unit 31 is connected with the coupling unit 32, the coupling unit 32 is connected with the high-voltage conversion control unit 33, the high-voltage conversion control unit 33 is connected with the digital logic control chip 34, the digital logic control chip 34 is also respectively connected with the oscillation unit 35 and the driving unit 36, the oscillation unit 35 is connected with the driving unit 36, and the driving unit 36 is connected with the acousto-optic alarm prompting unit 37;
The acquisition unit 31 comprises a self-checking key unit 311 and a high-voltage clamping circuit unit 312;
referring to fig. 1-3, the acquisition unit 31 further comprises:
a first resistor, a first end of which is connected to the high voltage probe 1, and a second end of which is connected to the coupling unit 32 via a second resistor;
In this embodiment, the first resistor includes a seventeenth resistor R1 and an eighteenth resistor R101, and first ends of the seventeenth resistor R1 and the eighteenth resistor R101 are connected to the high voltage probe 1; the second resistor comprises a nineteenth resistor R2 and a twentieth resistor R201, and second ends of the nineteenth resistor R2 and the twentieth resistor R201 are connected with the coupling unit 32;
The high voltage clamp circuit unit 312 includes:
the anode of the first diode D1 is connected with the cathode of the battery 2, the second ends of the seventeenth resistor R1 and the eighteenth resistor R101 are connected with the cathode of the first diode D1, and the first ends of the nineteenth resistor R2 and the twentieth resistor R201 are also connected with the cathode of the first diode D1;
The self-checking key unit 311 includes:
and the first end of the third resistor R3 is connected with the high-voltage probe 1, and the second end of the third resistor R3 is connected with the anode of the first diode D1 through the self-checking switch S1.
The coupling unit 32 includes a second diode D2, and second ends of the nineteenth resistor R2 and the twentieth resistor R201 are both connected to a cathode of the second diode D2; the high-voltage conversion control unit 33 includes a first triode Q1, a base electrode of the first triode Q1 is connected with an anode of the second diode D2, an emitter electrode of the first triode Q1 is connected with a positive electrode of the battery 2, a collector electrode of the first triode Q1 is connected with the digital logic control chip 34 through a fourth resistor, two ends of the fourth resistor are connected with a first capacitor C1 in parallel, and one end of the first capacitor C1 is connected with a negative electrode of the battery 2; a fifth resistor R5 is connected between the base electrode and the emitter electrode of the first triode Q1; in this embodiment, the fourth resistor includes a twenty-first resistor R4 and a twenty-second resistor R402, the first end of the twenty-first resistor R4 is connected to the collector of the first triode Q1, the second end of the twenty-first resistor R4 is connected to the digital logic control chip 34 through the twenty-second resistor R402, the first end of the first capacitor C1 is connected to the collector of the first triode Q1 through the twenty-third resistor R401, the second end of the first capacitor C1 is connected to the second end of the twenty-first resistor R4, and the first end of the first capacitor C1 is connected to the negative electrode of the battery 2.
The oscillating unit 35 includes a sixth resistor R6 and a seventh resistor R7, wherein first ends of the sixth resistor R6 and the seventh resistor R7 are respectively connected to the digital logic control chip 34, and second ends of the sixth resistor R6 and the seventh resistor R7 are both connected to the first end of the second capacitor C2;
The driving unit 36 includes a second triode Q2, a base electrode of the second triode Q2 is connected to the digital logic control chip 34 via an eighth resistor R8, an emitter electrode of the second triode Q2 is connected to a negative electrode of the battery 2, a collector electrode of the second triode Q2 is connected to a positive electrode of the battery 2 via the audible and visual alarm prompting unit 37, and a second end of the second capacitor C2 is connected to one end of the eighth resistor R8 connected to the digital logic control chip 34.
The audible and visual alarm prompting unit 37 comprises a first light emitting diode and a buzzer 371, wherein the anode of the first light emitting diode is connected with the anode of the battery 2 through a ninth resistor R9, and the cathode of the first light emitting diode is connected with the collector of the second triode Q2; the first end of the buzzer 371 is connected to the positive electrode of the battery 2, and the second end of the buzzer 371 is connected to the collector of the second triode Q2, in this embodiment, the first light emitting diode is composed of a light emitting diode D3 and a light emitting diode D301.
The digital logic control chip 34 is connected with the anode and the cathode of the battery 2, and a third capacitor C3 is also connected between the anode and the cathode of the battery 2.
Therefore, before the electroscope is used to the construction part for electroscope, the circuit loop of the electroscope can be subjected to self-inspection by pressing the self-inspection switch S1, if any component on the functional circuit board or the printed circuit board is subjected to virtual welding, open circuit or fracture and the like, the loop cannot be conducted, the self-inspection cannot be successful, the effectiveness of the self-inspection is ensured, an electric power maintainer is accurately judged by self-inspection, and the personal safety of the electric power maintainer in using the electroscope and subsequent operation is ensured. When the self-checking switch S1 is pressed, the first light-emitting diode emits light and the buzzer 371 sounds, so that the self-checking is successful, and the electroscope can be normally used; if any component or printed circuit board on the functional circuit board 3 is soldered, opened or broken, the first led or/and the buzzer 371 is not reacted, which means that the self-test is unsuccessful and the electroscope cannot be used.
When the self-checking switch S1 is pressed to perform self-checking, the high voltage input end is conducted with the circuit cathode, and the high voltage input end is conducted through the coupling unit 32 after passing through the high voltage clamping circuit unit 312 to control the conduction of the first triode Q1, the high voltage conversion control unit 33 to the digital logic control chip 34 enable the digital logic control chip 34 to output high level to pass through the bases of the third diode D6 to the fourth triode Q4, so that the fourth triode Q4 works in a switching state and is opened, at this time, the cathode loop of the circuit is conducted until the fourth triode Q4 is automatically cut off and opened after the self-checking test is finished. When a certain component in the circuit is in cold joint or the component fails, the circuit is disconnected from the cathode, so that the circuit is formed, the circuit of the high-voltage conversion control unit 33 cannot be started, meanwhile, no control signal is used for controlling the digital logic control chip 34, and the audible and visual alarm prompting unit 37, the driving unit 36, the oscillating unit 35, the real-time wake-up control circuit unit 39, the battery electric quantity monitoring state indicating unit 38 and the like which are respectively controlled by the digital logic control chip 34 cannot work.
Two working modes of the electroscope circuit loop of the embodiment are further described: the first mode is that the high voltage probe 1 is in a normal high voltage test state, the high voltage probe is in touch with a high voltage line, when the high voltage line is electrified, the high voltage passes through the high voltage clamping circuit unit 312 and then is conducted and controlled by the conductive characteristic of the second diode D2 to control the high voltage conversion control unit 33, the high voltage conversion control unit 33 to the digital logic control chip 34 enable the digital logic control chip 34 to output a high level to the base electrode of the fourth triode Q4 through the third diode D6, the fourth triode Q4 is enabled to work in a switch state and be opened, the negative electrode loop of the circuit is conducted until the fourth triode Q4 is automatically cut off and opened after the test is finished; the second way is to activate the self-checking switch S1, and the process is the same as the self-checking process, and will not be described again.
Referring to fig. 4 and 5, the electroscope of the embodiment further includes an upper housing 4, an infrared light-transmitting mask 5 and a battery case 21, the battery 2 is placed in the battery case 21, the battery case 21 and a buzzer 371 are plugged on the functional circuit board 3 and electrically connected, and the battery case 21, the buzzer 371 and the functional circuit board 3 are fixedly placed in the upper housing 4 and the infrared light-transmitting mask 5 after being buckled; the high-voltage probe 1 is connected with the functional circuit board 3 and extends out from the upper end of the upper shell 4; the upper shell 4 is provided with a key 41 corresponding to the self-checking switch S1, and the second light-emitting diode D4 or the third light-emitting diode D5 emits light to be displayed through a light-transmitting view window 42 arranged on the upper shell 4; the infrared light-transmitting cover 5 is in an inverted frustum shape, the small end of the bottom of the infrared light-transmitting cover 5 is connected with the shell base 6, when the first light-emitting diode emits light, the infrared light-transmitting cover 5 positioned at the rear part of the electroscope and in an inverted frustum shape highlights and displays so as to be convenient for observation, and the side wall of the inverted frustum shape of the infrared light-transmitting cover 5 is also provided with a plurality of sound transmission holes 51 so as to transmit sound sounded by the buzzer 371. When the electric power inspection device is used, the shell base 6 is connected with the insulating telescopic rod, an electric power maintainer holds the insulating telescopic rod, and the electric power inspection device is used for inspecting electricity through the contact of the high-voltage probe 1 with the construction part. When the electroscope is not used, the electroscope enters an automatic sleep state to save electricity, before the electroscope is used, the key 41 is pressed, if the infrared light-transmitting cover 5 transmits light, the buzzer 371 sounds and the light-transmitting window 42 transmits green, the electroscope can be used normally for electroscope operation, if the infrared light-transmitting cover 5 does not transmit light or/and the buzzer 371 does not sound, the self-test is unsuccessful, the electroscope cannot be used, the battery 2 needs to be replaced if the light-transmitting window 42 transmits red, and the self-test is needed again after the battery 2 is replaced. The shell base 5 is connected at the small end of the inverted frustum-shaped infrared light-transmitting cover 5, and can not block observation of an electricity inspection result and propagation of sound of the buzzer 22 during electricity inspection, so that electric power overhaulers can conveniently identify the electric power.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.