CN206557274U - Automotive check instrument - Google Patents
Automotive check instrument Download PDFInfo
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- CN206557274U CN206557274U CN201720081146.2U CN201720081146U CN206557274U CN 206557274 U CN206557274 U CN 206557274U CN 201720081146 U CN201720081146 U CN 201720081146U CN 206557274 U CN206557274 U CN 206557274U
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Abstract
A kind of automotive check instrument, including main part and the master control borad and feature board that are installed in main part, it is provided with master control borad on main control unit and display circuit unit, feature board and is provided with detection unit, power output unit, voice alerting unit and lighting circuit unit.The utility model passes through the voltage in observation circuit, electric current and resistance, so as to can reach the purpose to trouble hunting in circuit, and electric current and load internal resistance can be measured simultaneously, the tested internal resistance of source, supply voltage can be monitored while measurement voltage, cell health state can also be measured.In addition; the utility model employs fusing protective tube and special power source relay and high-power FET and carries out triple protection to abnormal circuit; using TFT LCD liquid crystal displays, good man-machine interface and the high-brightness LED lamp at full visual angle, increase the security used and convenience.It is practical, with stronger dissemination.
Description
Technical field
The utility model is related to a kind of instrument, more particularly to a kind of automotive check instrument.
Background technology
Current automobile circuit repair apparatus is usually all types of universal meters, with resistance, voltage, electric current in measurement circuitry
Deng.In automotive field, many circuits belong to low voltage and high current state, therefore, and the measurement for the logical state of circuit void is outstanding
Its is important, however, traditional detection device accurately, cell health state logical to the void of circuit can not be detected, it is impossible to carry
It is preceding that detection strick precaution is carried out to vehicle abnormality.Meanwhile, existing universal meter can not provide driving power supply for detected circuit, and can not
Monitor current, practicality is poor.In addition, when being overhauled to automobile bottom hardware circuit, due to automotive interior brightness not
Reach, the convenience of maintenance is influenced whether using traditional detection device.
Utility model content
Therefore, the purpose of this utility model is to provide a kind of automotive check instrument, can not to solve current wiring underlayer
Detection is empty logical, cell health state, and existing detection means can not provide driving power supply, can not monitor current the problem of.
To achieve the above object, the utility model mainly use following technical scheme for：
A kind of automotive check instrument, is overhauled for automobile bottom hardware circuit, including main part and is installed in main body
It is provided with main control unit and display circuit unit, the feature board and sets on master control borad and feature board in portion, the master control borad
It is equipped with detection unit, power output unit, voice alerting unit and lighting circuit unit；The automotive check instrument also includes one
Push-button unit, the push-button unit includes setting button, LED control buttons and power supply output key, and the setting button is set
In on the master control borad, the LED control buttons and power supply output key are arranged on the feature board；The detection unit,
Power output unit, display circuit unit, voice alerting unit, push-button unit and lighting circuit unit are electrically connected at described
On main control unit；The detection unit includes voltage measurement unit, current measuring unit and resistance measurement unit.
Compared with prior art, automotive check this instrument of instrument of the present utility model passes through voltage, electric current in observation circuit
And resistance, so as to reach the purpose to the maintenance of failure in circuit, it can measure electric current and load internal resistance simultaneously, measure voltage
The function of measured source internal resistance can be monitored, during output voltage signal, possesses and is latched by i.e. defeated, button and three kinds of sides of pulse output
Formula, this instrument is powered using wide power, input power be 9V to 34V can normal work, while energy monitoring power voltage, also can
Power supply health status is measured.In addition, this instrument employs fusing protective tube and special power source relay and high-power field
Effect pipe carries out triple protection to abnormal circuit phenomenon, and using the TFT liquid crystal displays and good man-machine interface at full visual angle, increase makes
Security and convenience.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model automotive check instrument.
Fig. 2 is the module diagram of automotive check instrument in Fig. 1.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.
As depicted in figs. 1 and 2, a kind of automotive check instrument that the utility model is provided, for automobile bottom hardware circuit
Maintenance, can measure resistance, voltage, electric current, circuit void and pass to and cell health state, so as to reach the maintenance to automobile circuit
Work.
The automotive check instrument includes main part 10 and the master control borad, the feature board that are installed in main part 10, the master
It is provided with control plate on main control unit 20 and display circuit unit 40, the feature board and is provided with detection unit, power supply output list
A push-button unit is additionally provided with member 30, voice alerting unit 50 and lighting circuit unit 70, the automotive check instrument, it is described
Push-button unit includes setting button 62, LED control buttons 61 and power supply output key 63, and the setting button 62 is arranged at described
On master control borad, the LED control buttons 61 and power supply output key 63 are arranged on the feature board；The detection unit, electricity
Source output unit 30, display circuit unit 40, voice alerting unit 50, push-button unit and lighting circuit unit 70 are electrically connected with
In on the main control unit 20；The detection unit includes voltage measurement unit 81, current measuring unit 82 and resistance measurement list
Member 83.
Some buttons 11, display screen 12, LED 13 and probe 14, the display screen 12 are provided with the main part 10
For full visual angle TFT LCD screens (Thin Film Transistor-LCD), the LED 13 is illumination highlights LED.In the present embodiment,
The automotive check instrument is powered using wide power, and the input power scope of the wide power is 9V to 34V.The automotive test equipment
Fusing protective tube, power supply relay and high-power FET are additionally provided with the circuit of table, to be carried out to abnormal circuit phenomenon
Triple protection, improves the inherently safe performance of circuit.
The automotive check instrument has resistance measurement, voltage measurement, current measurement, battery health measurement and empty circuit passband
Five kinds of detection patterns are measured, five kinds of detection patterns are by setting button 62 to switch over.Five kinds of detection patterns are in instrument
On be provided with correspondence resistance measuring system, voltage measurement system, current measurement system, battery health measuring system and empty circuit passband
Measuring system.The resistance measuring system by the resistance measurement unit 83, display circuit unit 40, voice alerting unit 50,
Push-button unit and main control unit 20 are constituted.The voltage measurement system by the voltage measurement unit 81, display circuit unit 40,
Voice alerting unit 50, push-button unit and main control unit 20 are constituted.
The current detecting system by the current measuring unit 84, display circuit unit 40, voice alerting unit 50, press
Key unit, main control unit 20 and power output unit 30 are constituted.The empty circuit passband measuring system is by the power output unit
30th, display circuit unit 40, voice alerting unit 50, current detecting unit 82, push-button unit and main control unit 20 are constituted.It is described
Automotive check instrument also includes a power supply voltage signal input block 90, and the cell health state measuring system is by the power supply
Voltage signal input block 90, display circuit unit 40, voice alerting unit 50, power output unit 30, push-button unit and master
Control unit 20 is constituted.
The voltage measurement unit 81 is used to measure the voltage status of measuring circuit, the voltage measurement unit 81
The big voltage signal, small voltage signal and small voltage signal of detected circuit can also be measured.Its voltage measurement scope
For DC：- 100V to 200V, AC：200V.
The current measuring unit 82 is used to measure the electric current for flowing into instrument and outflow instrument, its current measurement model
Enclose for：DC：0.1A to 30A.
The resistance measurement unit 83 is used to measure the resistance of resistance in circuit, and its resistance measurement scope is：0.1
Ω to 50K Ω.The resistance measurement unit 83 is also electrically connected with controllable constant-current source follower circuit 84 and resistance signal processing is single
Member 85, so as to export the electric current for being adapted to the resistance for different resistance.
The main control unit 10 is by singlechip group into operation and control for whole circuit system.The power supply output
Unit 30 is electrically connected on the probe 14, when driving local circuit, and it passes through the positive electricity of the external out-put supply of probe 14
Pressure or negative voltage.
The display circuit unit 40 is used to provide visual interface there is provided mode of operation for user, and instrument state is measured
The prompt facility of data and measurement result and abnormality, the display screen 12 is electrically connected at the display circuit unit
40。
The lighting circuit unit 70 is used to illuminate measurement position, is easy to user's inspection operation, the LED 13 is electrical
It is connected on the lighting circuit unit 70.The voice alerting unit 50, is in use the start of instrument, switching molding
Formula set, instrument power supply power supply it is too high, measurement voltage overruns, too high gauge internal temperature, cell health state, short circuit survey
Situations such as amount result and overcurrent are protected provides corresponding sound prompt function.
The push-button unit be used for instrument is operated pattern set and LED illumination switch set, and to probe 14
Export relevant voltage current signal.The button includes LED control buttons 61, sets button 62 and power supply output key respectively
63, the LED control buttons 61, setting button 62 and power supply output key 63 are electrically connected on the key circuit.Institute
State LED control buttons 61 to be arranged on the master control borad, it is used for the on and off for controlling LED 13.
When instrument is in open state, instrument is set to corresponding voltage measuring mode or resistance measurement pattern, directly
Voltage and the state value of resistance with probe 14 and auxiliarily to corresponding circuits is measured, and its measured value is shown in display screen
On.
When the automotive check instrument carries out resistance measurement, the controllable constant-current source follower circuit can be directed to different electricity
Resistance output is adapted to the electric current of the resistance, and the amplification treatment circuit of many gear switches is employed in sampling processing circuit, due to
Have in measurement resistance in the presence of external voltage, influence whether the measurement accuracy of resistance, so being monitored while resistance is measured
Voltage condition on resistance, and be made whether to judge whether to measure resistance, so as to reach accurate, effective measurement.
When the automotive check instrument carries out voltage measurement, sampled using the isolation of input signal high impedance and many gears,
The input of partial pressure differential type is employed in input signal processing, is measured while reaching the measurement to big voltage and alternating current-direct current signal
While monitoring voltage source internal resistance situation, so as to reach accurate, errorless measurement purpose.
Under current measurement pattern, the negative pole of corresponding circuits will be auxiliarily connect, probe 14 connects corresponding circuits positive pole, measurement electricity
In road flow into instrument current value, if circuit-under-test does not have power supply, instrument can provide power supply for circuit, at the same measure for
The current value of circuit output.
When the automotive check instrument carries out current measurement：Using input and output signal of the high-accuracy current divider to electric current
Sampling processing is carried out, is amplified with many gears and filtered, supervision protection is carried out to signal with high-power FET and power supply relay,
So as to reach safety, in real time, effective current measurement.
In the empty circuit passband of measurement, with probe with the measured point in auxiliarily docking circuit, circuit-under-test is exported
Electric current, instrument can in unit interval internal cutting off, and dock understanding and considerate condition make correspondence display and voice message.
When the automotive check instrument carries out empty circuit passband measurement, this instrument was employed to the local turning circuit unit interval
Interior output 30A pulse currents, while monitoring this section of circuit internal resistance status method, have to realize to the circuit that should be turned in circuit
Effect measurement.
In cell health state measurement pattern, by probe good contact in the "+" or "-" of battery, display screen meeting
Operator is pointed out to press corresponding button, after complete button, product can make corresponding display and voice message to measurement result.
Under supply voltage output mode, the automotive check instrument possesses the function of externally providing power supply, and it exports electricity
Press feature comprising output supply voltage, power supply and three kinds of impulse type voltage signals (1Hz, 2Hz and 4Hz) totally five class power supplys believe
Number.
When the automotive check instrument carries out battery health measurement, there is power requirement during due to storage battery power supply,
Obvious voltage decline phenomenon will not be produced less than electricity is provided in its normal power lower certain time, this instrument is used
Battery is carried out to carry out heavy-current discharge to battery in the unit interval, while storage battery pressure condition is monitored, so as to measure
Go out battery current electric quantity health status.
In summary, automotive check this instrument of instrument of the present utility model is by voltage, electric current and resistance in observation circuit,
So as to reach the purpose to the maintenance of failure in circuit, this instrument is powered using wide power, and input power is that 9V to 34V can be just
Often work, while energy monitoring power voltage, can also be measured to power supply health status.Protected in addition, this instrument employs fusing
Danger pipe and special power source relay and high-power FET carry out triple protection to abnormal circuit phenomenon, using full visual angle
TFT liquid crystal displays and good man-machine interface, increase the security and convenience used.
Preferably one embodiment of the present utility model is the foregoing is only, not to limit the utility model,
All any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., should be included in this reality
Within new protection domain.
Claims (9)
1. a kind of automotive check instrument, is overhauled for automobile bottom hardware circuit, it is characterised in that：Including main part and dress
Main control unit and display circuit unit, the work(are provided with master control borad and feature board in main part, the master control borad
Detection unit, power output unit, voice alerting unit and lighting circuit unit can be provided with plate；The automotive check instrument
Also include a push-button unit, the push-button unit includes setting button, LED control buttons and power supply output key, the setting
Button is arranged on the master control borad, and the LED control buttons and power supply output key are arranged on the feature board；The inspection
Unit, power output unit, display circuit unit, voice alerting unit, push-button unit and lighting circuit unit is surveyed electrically to connect
It is connected on the main control unit；The detection unit includes voltage measurement unit, current measuring unit and resistance measurement unit.
2. automotive check instrument as claimed in claim 1, it is characterised in that：The automotive check instrument includes resistance measurement system
System, voltage measurement system, current measurement system, battery health measuring system and empty circuit passband measuring system, the setting button
Each measuring system is switched over.
3. automotive check instrument as claimed in claim 2, it is characterised in that：The resistance measuring system is surveyed including the resistance
Unit, display circuit unit, voice alerting unit, push-button unit and main control unit are measured, the voltage measurement system includes described
Voltage measurement unit, display circuit unit, voice alerting unit, push-button unit and main control unit.
4. automotive check instrument as claimed in claim 2, it is characterised in that：The current detecting system is surveyed including the electric current
Measure unit, display circuit unit, voice alerting unit, push-button unit, main control unit and power output unit；The empty circuit passband
Measuring system includes the power output unit, current detecting unit, display circuit unit, voice alerting unit, push-button unit
And main control unit.
5. automotive check instrument as claimed in claim 2, it is characterised in that：Also include a power supply voltage signal input block,
The cell health state measuring system includes the power supply voltage signal input block, power output unit, display circuit list
Member, voice alerting unit, push-button unit and main control unit.
6. automotive check instrument as claimed in claim 1, it is characterised in that：Also include constant-current source output circuit and resistance signal
Processing unit, constant-current source output circuit and the resistance signal processing unit is electrically connected on the resistance measurement unit.
7. automotive check instrument as claimed in claim 1, it is characterised in that：The automotive check instrument is connected to externally fed
Power supply, the externally fed power supply is wide power.
8. automotive check instrument as claimed in claim 1, it is characterised in that：Fusing is additionally provided with the automotive check instrument
Protective tube, power supply relay and high-power FET, are protected to circuit.
9. automotive check instrument as claimed in claim 1, it is characterised in that：The display screen is full visual angle TFT LCD screens, institute
LED is stated for illumination highlights LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720081146.2U CN206557274U (en) | 2017-01-20 | 2017-01-20 | Automotive check instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720081146.2U CN206557274U (en) | 2017-01-20 | 2017-01-20 | Automotive check instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206557274U true CN206557274U (en) | 2017-10-13 |
Family
ID=60009875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720081146.2U Active CN206557274U (en) | 2017-01-20 | 2017-01-20 | Automotive check instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206557274U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445314A (en) * | 2018-02-05 | 2018-08-24 | 北汽福田汽车股份有限公司 | The test device and vehicle of vehicle electric appliance |
| CN112051430A (en) * | 2020-09-14 | 2020-12-08 | 上海星融汽车科技有限公司 | Universal meter for detecting and repairing vehicle |
| WO2021203962A1 (en) * | 2020-04-07 | 2021-10-14 | 上海博茵堡电子科技有限公司 | Computer-assisted circuit continuity testing instrument |
-
2017
- 2017-01-20 CN CN201720081146.2U patent/CN206557274U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445314A (en) * | 2018-02-05 | 2018-08-24 | 北汽福田汽车股份有限公司 | The test device and vehicle of vehicle electric appliance |
| WO2021203962A1 (en) * | 2020-04-07 | 2021-10-14 | 上海博茵堡电子科技有限公司 | Computer-assisted circuit continuity testing instrument |
| CN112051430A (en) * | 2020-09-14 | 2020-12-08 | 上海星融汽车科技有限公司 | Universal meter for detecting and repairing vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: 523649 No. 72 Po East Road, Yu Liang Wai village, Qingxi Town, Dongguan, Guangdong Patentee after: GUANGDONG MAISHI MEASURE Co.,Ltd. Address before: 523649 Yu Liang Wai, Qingxi Town, Dongguan City, Guangdong Province village Patentee before: DONGGUAN MASTECH INSTRUMENT TECHNOLOGY Co.,Ltd. |