CN211505833U - A electric leakage detection device for auto repair - Google Patents
A electric leakage detection device for auto repair Download PDFInfo
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- CN211505833U CN211505833U CN201922390767.0U CN201922390767U CN211505833U CN 211505833 U CN211505833 U CN 211505833U CN 201922390767 U CN201922390767 U CN 201922390767U CN 211505833 U CN211505833 U CN 211505833U
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000008439 repair process Effects 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000013500 data storage Methods 0.000 claims abstract description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to an auto repair technical field especially relates to a leakage detection device for auto repair, include from machine module, host computer module, wireless communication module, central processing module, current detection module, alarm module, display module, interface operation module and data storage module, from the output of machine module through wireless communication module and host computer module communicate, wireless communication module's output and host computer module's input electric connection, host computer module's output and central processing module's input electric connection. The utility model discloses reached and carried out leakage detection's purpose to vehicle internal circuit system, improved the speed and the reliability that leakage current detected and fix a position to a certain extent, not only improved maintenance personal's work efficiency greatly, still ensured whole car circuit system's safety and stability operation, consequently can avoid the vehicle to appear the emergence of battery insufficient voltage phenomenon.
Description
Technical Field
The utility model relates to an auto repair technical field especially relates to a leakage detection device for auto repair.
Background
With the advancement of science and technology and the improvement of living standard, automobiles become indispensable tools for riding instead of walk in daily life and work of people. However, for various reasons, the automobile may have faults, for example, a leakage fault of the automobile may cause a power shortage of a vehicle battery, a difficult start-up or a malfunction of an electric appliance, and a vehicle with the oil leakage may have a risk of spontaneous combustion.
When the automobile is parked, the phenomenon that the automobile is difficult to start or the electric appliance works badly can be caused by the fact that the electric switch of the electric appliance is not closed, the polar plates of the storage battery are short-circuited or oxidized and fall off to cause self-discharge and power shortage, and the electric appliance, the wiring harness, the sensor, the controller, the actuator and other electronic components and circuit grounding of the automobile cause power leakage and power shortage.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a leakage detection device for auto repair has reached and has carried out leakage detection's purpose to vehicle internal circuit system, has improved the speed and the reliability that leakage current detected and fix a position to a certain extent, has not only improved maintenance personal's work efficiency greatly, has still ensured whole car circuit system's safety and stability operation, consequently can avoid the vehicle to appear the emergence of battery insufficient voltage phenomenon.
(II) technical scheme
In order to realize the technical problem, the utility model provides a following technical scheme: an electric leakage detection device for automobile maintenance comprises a slave module, a host module, a wireless communication module, a central processing module, a current detection module, an alarm module, a display module, an interface operation module and a data storage module, the output end of the slave machine module is communicated with the host machine module through a wireless communication module, the output end of the wireless communication module is electrically connected with the input end of the host machine module, the output end of the host module is electrically connected with the input end of the central processing module, the output end of the central processing module is electrically connected with the input end of the current detection module, the output end of the host module is electrically connected with the input end of the alarm module, the output end of the host module is electrically connected with the input end of the display module, the output end of the display module is electrically connected with the input end of the interface operation module, and the output end of the central processing module is electrically connected with the input end of the data storage module.
Furthermore, the slave module is powered by a slave power supply module, the host module is powered by a host power supply module, and the slave power supply module and the host power supply module both adopt the TP as a charging controller of the lithium ion battery.
Further, the central processing module adopts a 32-bit four-core eight-thread processor with the model of ARM-STM32F103RCT6, the main frequency is 72MHz, the A/D with 10 bits high precision comprises 2 12-bit ADCs, 3 universal 16-bit timers and 1 PWM timer.
Furthermore, the wireless communication module adopts a transmission mode of an external antenna, the communication mode is FSK bidirectional half duplex, the transmitting power is less than or equal to 10dBm, and the communication frequency is 433 MHz.
Furthermore, the number of the display modules is two, the two display modules are respectively positioned on the host module and the slave module, the host module adopts a 128mm × 128mm 3 inch LCD, and the slave module adopts a 128mm × 64mm 0.96 inch OLCD.
Furthermore, the current detection module adopts an open pincerlike meter head mutual inductor with the diameter of 6cm, and a special alloy shielding cover is sleeved on the periphery of the magnetic conductive sheet.
(III) advantageous effects
The utility model provides a leakage detection device for auto repair possesses following beneficial effect:
1. the utility model discloses because current detection module 5's setting, can carry out real-time detection to the suspected electric leakage position among the car circuit system, and simultaneously, the speed and the reliability that leak current detection and location have been improved to a certain extent, accomplish induced-current signal processing, battery charging control, state display, when interface operation and alarm record save, the wireless communication between host computer and slave computer has been realized, maintenance personal's work efficiency has not only been improved greatly, whole car circuit system's safety and stability operation has still been ensured, consequently, can avoid the vehicle to appear the emergence of battery insufficient voltage phenomenon, the safety in utilization of vehicle has been guaranteed.
2. The utility model discloses the change is set for to the button on the accessible panel, also can carry out the settlement change that keeps off the position through corresponding supporting wireless receiving host computer, can take place the number of times of transfinite electric leakage in the 24h of record, the numerical value of electric leakage quantity, the time of taking place, the address, also can the interior warning sound of starting drive or the alarm lamp scintillation, simultaneously, the use of cooperation alloy shield cover when can effectively avoid external magnetic field interference, guarantees measured data's high accuracy and stability.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a system circuit diagram of the structure current detection module of the present invention;
FIG. 3 is a system circuit diagram of the power supply module of the structure host of the present invention;
FIG. 4 is a system circuit diagram of a slave power supply module according to the present invention;
fig. 5 is a schematic view of the operation flow of the system principle of the structure of the present invention.
In the figure: 1. a slave module; 2. a host module; 3. a wireless communication module; 4. a central processing module; 5. a current detection module; 6. an alarm module; 7. a display module; 8. an interface operation module; 9. and a data storage module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In fig. 1 and 5, the present invention provides a technical solution: an electric leakage detection device for automobile maintenance comprises a slave module 1, a host module 2, a wireless communication module 3, a central processing module 4, a current detection module 5, an alarm module 6, a display module 7, an interface operation module 8 and a data storage module 9, wherein the output end of the slave module 1 is communicated with the host module 2 through the wireless communication module 3, the output end of the wireless communication module 3 is electrically connected with the input end of the host module 2, the output end of the host module 2 is electrically connected with the input end of the central processing module 4, the output end of the central processing module 4 is electrically connected with the input end of the current detection module 5, the output end of the host module 2 is electrically connected with the input end of the alarm module 6, the output end of the host module 2 is electrically connected with the input end of the display module 7, and the output end of the display module 7 is electrically connected with the input end of the, the output end of the central processing module 4 is electrically connected with the input end of the data storage module 9, and due to the arrangement of the current detection module 5, the suspected leakage position in the automobile circuit system can be detected in real time, meanwhile, the speed and reliability of leakage current detection and positioning are improved to a certain extent, when the induced current signal processing, the charging control of the storage battery, the state display, the interface operation and the alarm record storage are completed, the wireless communication between the host and the slave is realized, the working efficiency of maintenance personnel is greatly improved, and the safe and stable operation of the whole automobile circuit system is ensured, so that the occurrence of the storage battery electricity shortage phenomenon of the vehicle can be avoided, and the use safety of the vehicle is ensured.
In fig. 2, when the current detection module 5 is in operation, when a residual current is generated in the car cable, the currents passing through the phase line and the neutral line of the magnetic ring are no longer equal, and an alternating magnetic field is generated in the magnetic ring, an electromotive force is induced in the secondary coil, the output signal is collected and processed and then input to the OPA847, HGQ is the signal input of the ac transformer, D3 is a bidirectional zener diode to prevent the input signal from damaging the operational amplifier due to an excessively large amplitude, S1 is a leakage current/current detection mode switch, in the current detection mode, pin 3 of S1 is grounded, the input signal loads are three resistors R19, R20, and R21 connected in parallel, so as to prevent the signal amplitude from exceeding the sampling range of the MCU due to an excessively large amplitude, and in the leakage current detection mode, the input signal loads are R19 and R20 to obtain an appropriate signal amplitude, while pin 1 of S1 is grounded, pin Itype is detected by the MCU as a low level, and a leakage current, otherwise, a current measurement procedure is executed, R23 and R24 are used for adjusting the leakage current and the amplification factor of the operational amplifier under the current measurement mode, R14 and R15 determine the voltage of the central point of the alternating current output signal, and the value is taken to ensure that the meter head can normally return to zero.
According to the fig. 3-4, the operation mode of the master power supply module and the slave power supply module is mainly overcharge protection, the charging voltage is fixed to 4.2V, the charging current can be set through an external resistor, when the charging current reaches 1/10 of a set value after reaching the final float charging voltage, the TP4056 will automatically terminate the charging process, and when the input voltage is removed, the integrated circuit automatically enters a low current state, so that the leakage current of the lithium battery is below 2 μ a.
The power consumption of TP4056 can be reduced when large current is charged by the aid of the R2 divider resistor, the charging current is adjusted through the R9, the R4 and the R8 are battery power sampling divider resistors and enter an A/D port of the MCU after being filtered by the C4 to sample and calculate the battery voltage, and if the battery voltage is lower than 3.4V, the MCU executes shutdown operation to prevent the battery from being exhausted and further influence the service life.
The slave module 1 is powered by a slave power supply module, the host module 2 is powered by a host power supply module, the slave power supply module and the host power supply module both adopt TP4056 as a charging controller of a lithium ion battery, the central processing module 4 adopts a 32-bit four-core eight-wire processor with the model of ARM-STM32F103RCT6, the master frequency is 72MHz, the processor has 10-bit high-precision A/D, the processor comprises 2 12-bit ADCs, 3 universal 16-bit timers and 1 PWM timer, the wireless communication module 3 adopts the transmission mode of an external antenna, the communication mode is FSK bidirectional half-duplex, the transmitting power is less than or equal to 10dBm, the communication frequency is 433MHz, the data transmission is carried out by an IIC bus, the data on a data line is kept stable when a clock signal is at a high level, the high and low levels on the data line can be changed only when the clock signal is at a low level, wherein the pins of PC11-PC12 of the host MCUSTM32F 103T 6 are respectively external EEPROM data and the clock of the IIC, PA2-U2-TX and PA3-U2-RX pins are RX and TX (baud rate is 9600Bps) of a serial port of a wireless module respectively, PA9-PA10 pins of an STM32F103RCT6 in a slave computer are used for serial data communication, PB8-PB9 pins are used for EEPROMIC communication, PB12-PB15 pins are connected with an external RTC module, the number of display modules 7 is two, the two display modules 7 are respectively positioned on a host computer module 2 and the slave computer module 1, the host computer module 2 adopts a 3-inch LCD (liquid crystal display) screen with a size of 128mm multiplied by 128mm, the slave computer module 1 adopts a 0.96-inch OLCD with a size of 128mm multiplied by 64mm, a current detection module 5 adopts an open pincerlike meter head transformer with a diameter of 6cm, a special alloy shielding cover is sleeved on the periphery of a magnetic conductive sheet, the high precision and stability of measured data can be effectively avoided, the setting change can be carried out through a key on a panel, the matched wireless receiving host computer can carry out setting change through corresponding gears, the number of times of the over-limit leakage within 24h, the numerical value of the leakage amount, the occurrence time and the address can be recorded, and the alarm sound or the alarm lamp in the device can be started to flash.
When the power-on switch is used, the slave module is arranged in an automobile circuit system, the open-type pincer-shaped meter head mutual inductor is clamped with the starting end of a detected circuit, the host is controlled by an operator in a handheld mode, the host is in a power-on working state by starting a button, and the power-on switch is matched with the operation of the whole system, so that whether a current leakage phenomenon exists in the circuit or not and the current leakage position can be detected and displayed on the display module.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a leakage detection device for auto repair, includes from module (1), host computer module (2), wireless communication module (3), central processing module (4), current detection module (5), alarm module (6), display module (7), interface operation module (8) and data storage module (9), its characterized in that: the output end of the slave module (1) is communicated with the host module (2) through a wireless communication module (3), the output end of the wireless communication module (3) is electrically connected with the input end of the host module (2), the output end of the host module (2) is electrically connected with the input end of the central processing module (4), the output end of the central processing module (4) is electrically connected with the input end of the current detection module (5), the output end of the host module (2) is electrically connected with the input end of the alarm module (6), the output end of the host module (2) is electrically connected with the input end of the display module (7), the output end of the display module (7) is electrically connected with the input end of the interface operation module (8), the output end of the central processing module (4) is electrically connected with the input end of the data storage module (9).
2. An electrical leakage detecting device for automobile repair according to claim 1, wherein: the power supply of the slave module (1) is carried out by the slave power supply module, the power supply of the host module (2) is carried out by the host power supply module, and the slave power supply module and the host power supply module both adopt TP4056 as a charging controller of the lithium ion battery.
3. An electrical leakage detecting device for automobile repair according to claim 1, wherein: the central processing module (4) adopts a 32-bit four-core eight-thread processor with the model of ARM-STM32F103RCT6, the main frequency is 72MHz, the processor has 10-bit high-precision A/D, and the processor comprises 2 12-bit ADCs, 3 universal 16-bit timers and 1 PWM timer.
4. An electrical leakage detecting device for automobile repair according to claim 1, wherein: the wireless communication module (3) adopts a transmission mode of an external antenna, the communication mode is FSK bidirectional half duplex, the transmitting power is less than or equal to 10dBm, and the communication frequency is 433 MHz.
5. An electrical leakage detecting device for automobile repair according to claim 1, wherein: the number of the display modules (7) is two, the two display modules (7) are respectively positioned on the host module (2) and the slave module (1), the host module (2) adopts a 128mm multiplied by 128mm 3 inch LCD, and the slave module (1) adopts a 128mm multiplied by 64mm 0.96 inch OLCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390767.0U CN211505833U (en) | 2019-12-27 | 2019-12-27 | A electric leakage detection device for auto repair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922390767.0U CN211505833U (en) | 2019-12-27 | 2019-12-27 | A electric leakage detection device for auto repair |
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| CN211505833U true CN211505833U (en) | 2020-09-15 |
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| CN201922390767.0U Expired - Fee Related CN211505833U (en) | 2019-12-27 | 2019-12-27 | A electric leakage detection device for auto repair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305458A (en) * | 2020-12-30 | 2021-02-02 | 南京斯泰恩智慧能源技术有限公司 | Wave recording type platform area residual current detection terminal and early warning system |
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2019
- 2019-12-27 CN CN201922390767.0U patent/CN211505833U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305458A (en) * | 2020-12-30 | 2021-02-02 | 南京斯泰恩智慧能源技术有限公司 | Wave recording type platform area residual current detection terminal and early warning system |
| CN112305458B (en) * | 2020-12-30 | 2021-04-16 | 南京斯泰恩智慧能源技术有限公司 | Wave recording type platform area residual current detection terminal and early warning system |
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Granted publication date: 20200915 |