CN107132407A - A kind of automobile instrument production line quiescent current test device - Google Patents
A kind of automobile instrument production line quiescent current test device Download PDFInfo
- Publication number
- CN107132407A CN107132407A CN201710301019.3A CN201710301019A CN107132407A CN 107132407 A CN107132407 A CN 107132407A CN 201710301019 A CN201710301019 A CN 201710301019A CN 107132407 A CN107132407 A CN 107132407A
- Authority
- CN
- China
- Prior art keywords
- quiescent current
- test device
- automobile instrument
- circuit
- current test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention proposes a kind of automobile instrument production line quiescent current test device, including：Sample circuit；Amplifying circuit, is connected to the sample circuit；AD sample circuits, are connected to the amplifying circuit；Serial ports repeat circuit, is connected to the AD sample circuits, wherein, the quiescent current test device is connected to the automobile instrument, and the serial ports repeat circuit is connected to automobile instrument test equipment.Automobile instrument production line quiescent current test device proposed by the present invention, the testing current in being produced more practical and time-consuming less can be measured.It is more convenient to produce the measurement of progress quiescent current on line in enormous quantities in instrument, and current parameters is analyzed and assessed in the measurements, it is ensured that the accuracy and uniformity of test.
Description
Technical field
Field is manufactured the present invention relates to automobile instrument, and more particularly to a kind of automobile instrument production line is tested with quiescent current
Device.
Background technology
Automobile instrument quiescent current refers to electric current of the instrument in dormancy, and general producer's regulation instrument quiescent current is less than
1mA.Instrument quiescent current refers to instrument and only connects battery line, and igniting wiretap is in OFF position, the load of no Operation switch, vapour
The electric current consumed during car bus-off.Excessive quiescent current can cause automobile batteries power shortage, and even more serious consequence can be led
Automobile is caused to start.
To ensure that the automobile instrument of batch production meets technical need and reliably worked, production line must strictly by wanting
Ask progress quiescent current test.In automobile instrument production test procedure, quiescent current parameter measured, be given birth to by instrument
The limitation of producing line time beat, is difficult to carry out integrated, and purchase with automobile instrument test equipment using special ammeter test
This height of buy.
The content of the invention
The present invention to the test of instrument quiescent current and meets the requirement of production line time beat for production line, it is proposed that
Increase a quiescent current test device between tested instrument and back end test equipment.Practice shows, with automotive meter
The testing requirement of quiescent current when table quiescent current test device can effectively complete the production of high-volume instrument.It is proposed by the present invention
Automobile instrument production line coordinates production line task equipment to be tested with quiescent current test device, and can be directed to different model
Automobile instrument gives consistent good measurement result.
In order to achieve the above object, the present invention proposes a kind of automobile instrument production line quiescent current test device, including：
Sample circuit；
Amplifying circuit, is connected to the sample circuit；
AD sample circuits, are connected to the amplifying circuit；
Serial ports repeat circuit, is connected to the AD sample circuits,
Wherein, the quiescent current test device is connected to the automobile instrument, and the serial ports repeat circuit is connected to vapour
Car Meter Test equipment.
Further, the battery line of the automobile instrument and ground wire access the quiescent current test device.
Further, the sample circuit is connected to the ground terminal of automobile instrument by sampling resistor.
Further, the sampling resistor uses 1 Ohmic resistance or 2 Ohmic resistances.
Further, it is connected with filter circuit between the sampling resistor and amplifying circuit.
Further, the amplifying circuit is connected with amplifier power supply circuit.
Further, the AD sample circuits are single-chip microcomputer.
Further, the AD sample circuits are judged sampled value, judge that electric current is examined when sampled value meets regulation
Survey it is qualified, when sampling number exceed setting number of times post-sampling value or it is against regulation when judge that current detecting is unqualified.
Further, the sampling number sets number of times as 10 times.
Automobile instrument production line quiescent current test device proposed by the present invention, the testing current in being produced can
More practical and time-consuming less measures.Be more convenient instrument produce in enormous quantities line on carry out quiescent current measurement, and
Current parameters are analyzed and assessed in measurement, it is ensured that the accuracy and uniformity of test.
Brief description of the drawings
Fig. 1 show the quiescent current test device system block diagram of present pre-ferred embodiments.
Fig. 2 show sampling and the amplification system block diagram of present pre-ferred embodiments.
Fig. 3 show the circuit diagram of the sample circuit of present pre-ferred embodiments.
Fig. 4 show the circuit diagram of the amplifying circuit of present pre-ferred embodiments.
Fig. 5 a and Fig. 5 b show the circuit diagram of the power supply circuit of present pre-ferred embodiments.
Fig. 6 show the quiescent current test device testing process schematic diagram of present pre-ferred embodiments.
Embodiment
The embodiment of the present invention is provided below in conjunction with accompanying drawing, but the invention is not restricted to following embodiment.Root
According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that, accompanying drawing is using very simple
The form of change and use non-accurately ratio, be only used for conveniently, lucidly aid in illustrating the embodiment of the present invention purpose.
Fig. 1 is refer to, Fig. 1 show the quiescent current test device system block diagram of present pre-ferred embodiments.The present invention
A kind of automobile instrument production line quiescent current test device 10 is proposed, including：Sample circuit 100；Amplifying circuit 200, connection
In the sample circuit 100；AD sample circuits 300, are connected to the amplifying circuit 200；Serial ports repeat circuit 400, is connected to
The AD sample circuits 300, wherein, the quiescent current test device 10 is connected to the automobile instrument 20, and the serial ports turns
Power Generation Road 400 is connected to the serial ports of automobile instrument test equipment 30.
Fig. 2 is refer to, Fig. 2 show sampling and the amplification system block diagram of present pre-ferred embodiments.According to this hair
Bright preferred embodiment, the battery line 21 and ground wire 22 of the automobile instrument 20 access the quiescent current test device 10.At this
In one circuit of sample, can accurately it measure, measurement electric current is up to microampere rank, while noise and the drift of circuit generation
Move also extremely low.
Fig. 3 show the circuit diagram of the sample circuit of present pre-ferred embodiments.The sample circuit passes through sampling resistor
110 are connected to the ground terminal of automobile instrument 20.Further, the sampling resistor 110 uses 1 Ohmic resistance or 2 ohm of electricity
Resistance.Sample circuit 100 is placed on the ground terminal of instrument using high-accuracy 1 or 2 Ohmic resistances, after impedance transformation, and signal enters
Amplifier end.Further, it is connected with filter circuit 120 between the sampling resistor 110 and amplifying circuit 200.
The AD sample circuits are single-chip microcomputer.The MC9S12G64 single-chip microcomputer conducts that can be produced using FREESCALE companies
The processor of AD sample circuits, system is safe and reliable to be easily achieved.After sampling through filter result by serial ports issue instrument survey
Try equipment.
Fig. 4 and Fig. 5 a, Fig. 5 b are refer to, Fig. 4 show the circuit diagram of the amplifying circuit of present pre-ferred embodiments, Fig. 5 a
The circuit diagram of the power supply circuit of present pre-ferred embodiments is shown with Fig. 5 b.The amplifying circuit is connected with amplifier and powered electricity
Road.In present pre-ferred embodiments, amplifier is using AD620 as instrument amplifier, and AD620 is a inexpensive, high-precision
Spend instrument amplifier, it is only necessary to which a non-essential resistance sets gain, and gain ranging is 1 to 10000.By setting multiplication factor
It can adapt to the testing requirement of various model instrument.In order to adapt to the instrument of various current parameters requirements, to reserved two kinds of samplings
Resistance, selects corresponding sampling resistor in actual applications by respectively 2 ohm and 1 ohm.Put with adjustable rheostat to demarcate
Big multiple, coordinates sampling resistor to determine the voltage parameter of AD samplings.24V electricity of the power supply of module from Meter Test system
Pressure, changes into 12V by 24V through 78M12,12V is changed into 5V using TLE4264.5V voltages through chip 7660 produce -5V negative pressure to
AD620 negative pressure end powers.
Fig. 6 is refer to, Fig. 6 show the quiescent current test device testing process schematic diagram of present pre-ferred embodiments.
The AD sample circuits are judged sampled value, are judged that current detecting is qualified when sampled value meets regulation, are worked as sampling number
More than setting number of times post-sampling value or it is against regulation when judge that current detecting is unqualified.In operating process, the static state
Current testing device carries out electrification reset first, then carries out AD samplings, whether meets regulation to sampled value and judge, if
Judge that the sampled value of quiescent current is less than 1mA, then judge to meet regulation, serial ports sends sampled data and mark of conformity position, output
Current detecting pass result, when the sampled value for judging quiescent current is against regulation, continues to return progress AD samplings again, directly
When reaching more than 10 times sampled values to sampling number or be against regulation, then the underproof result of output electric current measure.
In summary, automobile instrument production line quiescent current test device proposed by the present invention, the electricity in being produced
Current test more practical and time-consuming less can be measured.It is more convenient to produce in enormous quantities in instrument and quiescent current is carried out on line
Measurement, and current parameters are analyzed and assessed in the measurements, it is ensured that the accuracy and uniformity of test.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention.Skill belonging to of the invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (9)
1. a kind of automobile instrument production line quiescent current test device, it is characterised in that including：
Sample circuit；
Amplifying circuit, is connected to the sample circuit；
AD sample circuits, are connected to the amplifying circuit；
Serial ports repeat circuit, is connected to the AD sample circuits,
Wherein, the quiescent current test device is connected to the automobile instrument, and the serial ports repeat circuit is connected to automotive meter
Table test equipment.
2. automobile instrument production line quiescent current test device according to claim 1, it is characterised in that the automobile
The battery line and ground wire of instrument access the quiescent current test device.
3. automobile instrument production line quiescent current test device according to claim 2, it is characterised in that the sampling
Circuit is connected to the ground terminal of automobile instrument by sampling resistor.
4. automobile instrument production line quiescent current test device according to claim 3, it is characterised in that the sampling
Resistance uses 1 Ohmic resistance or 2 Ohmic resistances.
5. automobile instrument production line quiescent current test device according to claim 1, it is characterised in that the sampling
Filter circuit is connected between resistance and amplifying circuit.
6. automobile instrument production line quiescent current test device according to claim 1, it is characterised in that the amplification
Circuit is connected with amplifier power supply circuit.
7. automobile instrument production line quiescent current test device according to claim 1, it is characterised in that the AD is adopted
Sample circuit is single-chip microcomputer.
8. automobile instrument production line quiescent current test device according to claim 1, it is characterised in that the AD is adopted
Sample circuit is judged sampled value, judges that current detecting is qualified when sampled value meets regulation, when sampling number exceedes setting
Number of times post-sampling value or it is against regulation when judge that current detecting is unqualified.
9. automobile instrument production line quiescent current test device according to claim 8, it is characterised in that the sampling
Number of times sets number of times as 10 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301019.3A CN107132407A (en) | 2017-05-02 | 2017-05-02 | A kind of automobile instrument production line quiescent current test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301019.3A CN107132407A (en) | 2017-05-02 | 2017-05-02 | A kind of automobile instrument production line quiescent current test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132407A true CN107132407A (en) | 2017-09-05 |
Family
ID=59715265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710301019.3A Pending CN107132407A (en) | 2017-05-02 | 2017-05-02 | A kind of automobile instrument production line quiescent current test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107132407A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU420969A1 (en) * | 1971-11-09 | 1974-03-25 | Е. Рыскин | DEVICE FOR MEASURING THE RELATIONSHIPS OF STATIC TRANSFER COEFFICIENTS OF TOKATRISTRANTS |
| RU2337317C1 (en) * | 2007-04-03 | 2008-10-27 | Открытое акционерное общество Арзамасское научно-производственное предприятие "ТЕМП-АВИА" (ОАО АНПП "ТЕМП-АВИА") | Induction motor control system and method of estimating its operation |
| CN101692105A (en) * | 2009-09-09 | 2010-04-07 | 江苏惠通集团有限责任公司 | Device for real-time detecting product of production line of remote control |
| CN101893646A (en) * | 2010-06-23 | 2010-11-24 | 江西省智成测控技术研究所有限责任公司 | Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof |
| CN101930025A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Power dissipation testing device |
| CN204705670U (en) * | 2015-05-29 | 2015-10-14 | 泛亚汽车技术中心有限公司 | A kind of quiescent current supervising device being applied to automobile electromagnetic anti-interference test |
-
2017
- 2017-05-02 CN CN201710301019.3A patent/CN107132407A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU420969A1 (en) * | 1971-11-09 | 1974-03-25 | Е. Рыскин | DEVICE FOR MEASURING THE RELATIONSHIPS OF STATIC TRANSFER COEFFICIENTS OF TOKATRISTRANTS |
| RU2337317C1 (en) * | 2007-04-03 | 2008-10-27 | Открытое акционерное общество Арзамасское научно-производственное предприятие "ТЕМП-АВИА" (ОАО АНПП "ТЕМП-АВИА") | Induction motor control system and method of estimating its operation |
| CN101930025A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Power dissipation testing device |
| CN101692105A (en) * | 2009-09-09 | 2010-04-07 | 江苏惠通集团有限责任公司 | Device for real-time detecting product of production line of remote control |
| CN101893646A (en) * | 2010-06-23 | 2010-11-24 | 江西省智成测控技术研究所有限责任公司 | Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof |
| CN204705670U (en) * | 2015-05-29 | 2015-10-14 | 泛亚汽车技术中心有限公司 | A kind of quiescent current supervising device being applied to automobile electromagnetic anti-interference test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080094069A1 (en) | Method and apparatus for monitoring the condition of a battery by measuring its internal resistance | |
| CN109490790A (en) | Using the lithium dynamical battery power characteristic test method and device of compensated pulse method | |
| CN114200381B (en) | Intelligent ammeter reliability detection system and method | |
| CN102288817A (en) | Charging pile power consumption detection system based on virtual load testing and detection method | |
| CN104977554A (en) | Detection device for storage battery internal resistance tester | |
| CN106405247B (en) | Portable silicon material resistivity measuring device | |
| CN107132407A (en) | A kind of automobile instrument production line quiescent current test device | |
| CN102012462A (en) | Device and method for detecting live wire-ground wire loop impedance of power circuit | |
| CN203224553U (en) | Sampling integral jaw-shaped AC active current meter | |
| CN207216008U (en) | Residual current acting Characteristics Detection instrument calibrator (-ter) unit | |
| CN206353202U (en) | A kind of calibration equipment of electric energy meter | |
| CN102539870A (en) | Portable high-precision multifunctional testing instrument | |
| US4163938A (en) | Calibrating device for control stations and indicators | |
| CN103293362A (en) | Direct-current ammeter and multimeter and measuring method by using ammeter or multimeter | |
| CN211785914U (en) | MOSFET internal resistance detection circuit | |
| CN106528911B (en) | A kind of device for establishing power supply VHDL-AMS simulation model | |
| CN208091808U (en) | A kind of secondary small line terminal strength testing tool of electric system | |
| CN109061524B (en) | Power supply test circuit and method | |
| CN204228286U (en) | A kind of Moisture Meter temperature collection circuit | |
| CN202854215U (en) | Inductive test pencil based on six-inverter integrated circuit | |
| CN1632600A (en) | Method and device for determining resistivity of graphite electrode | |
| CN112526441A (en) | Multifunctional integrated direct current electric energy calibrating device | |
| CN101833028B (en) | Device convenient for testing output voltage of power supply | |
| CN215641506U (en) | Novel meter resistance measuring device | |
| CN108152125A (en) | A kind of secondary small line terminal strength testing tool of electric system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170905 |
|
| WD01 | Invention patent application deemed withdrawn after publication |