CN205537722U - Detection apparatus for portable car combination meter - Google Patents
Detection apparatus for portable car combination meter Download PDFInfo
- Publication number
- CN205537722U CN205537722U CN201620057994.5U CN201620057994U CN205537722U CN 205537722 U CN205537722 U CN 205537722U CN 201620057994 U CN201620057994 U CN 201620057994U CN 205537722 U CN205537722 U CN 205537722U
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- China
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- signal
- driver
- output
- signal driver
- analog signal
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Abstract
The utility model discloses a detection apparatus for portable car combination meter. It inserts the microcontroller type control end respectively with programme -controlled frequency signal generator, programme -controlled analog signal genelator, signal setting controller, operation control panel's output signal, and is connected the constitution with the analog signal genelator 1 of the analog signal genelator 0 of frequency signal driver, analog signal driver, alarm signal driver, output synchronization display ware and singlechip. Its utilizes presets the control program in the singlechip, by operation control panel according to setting for the different signals of function output, provide required all kinds of standard signal source for the instrument to realize output of predetermined instrument operating condition and on -the -spot online test through frequency signal driver, analog signal driver, alarm signal driver, show through the synchronization display ware. Have simple structure, convenient to use, portable, dependable performance, existing field test, avoid erroneous judgement, strong adaptability, use extensively, economical and practical, be suitable for advantage such as popularization.
Description
Technical field
This utility model relates to the detection device of a kind of automobile combination meter, concretely relates to one and can be easy to scene
The detection device of the automobile combination meter carrying and operating with.
Background technology
Along with developing rapidly of electronic technology, automobile instrument technology is also being constantly updated, and the most domestic automobile instrument is just
In Rapid development stage, but owing to the overall general layout of domestic automobile production is still in multi items, the state of small lot, make to join for it
The automobile instrument of set is also at the situation of multi items, and this all will propose the highest to versatility and the switching of On-line Instrument
Requirement.It requires to carry out reliable data communication, high-precision performance test, good operation interface, switch control easily
System, shirtsleeve operation are arranged and the facility that uses is quick etc..Meanwhile, during the on-the-spot test of after-sale service,
Can carry out judging in time and accurately to the virtual condition of automobile instrument, also be that service station produces with client and automobile instrument
The problem extremely paid close attention between business.Once occur artificial erroneous judgement will to bring unnecessary trouble to automobile instrument manufacturer.
Summary of the invention
The purpose of this utility model is to provide for the detection device of a kind of portable vehicle combination instrument, and it can not only realize
On-the-spot in-circuit function test to automobile combination meter, it is to avoid anthropic factor causes the erroneous judgement to automobile instrument fault, reduces not
Necessary trouble.And automobile combination meter can be met to test device versatility and the higher demand of switching, open up further
The range of application of wide device, the problem making prior art exist has been resolved.
The technical solution of the utility model is as described below: it is occurred by programmed control frequency signal generator, program control analogue signal
Device, signal arrange controller, operation control panel, frequency signal driver, analogue signal driver, alarm signal driver,
Output synchronization indicator, single-chip microcomputer composition, by setting programmed control frequency signal generator, program control analog signal generator, signal
Put controller, the output signal of operation control panel is respectively connected to single-chip microcomputer input and controls end, and by frequency signal driver, mould
Intend signal driver, alarm signal driver, the input control end of output synchronization indicator and the output control terminal phase of single-chip microcomputer
Connect realization.
This utility model, owing to taking said structure, realizes analogue signal and frequency signal in particular with stored program control system
Control, replace traditional artifical resistance signal and standard-frequency signal source signal, control device can not only be set by signal
The frequency of programmed control frequency signal generator and the signal initial value of program control analog signal generator are directly set, utilize and be preset at list
Control program in sheet machine, is controlled, by the function set, the signal that output is different by the operation of operation control panel, and through frequency
Signal driver, analogue signal driver, the output channel of alarm signal driver, define the driving signal of instrumentation,
Provide instrument normally to work required all kinds of standard signal sources, simplify complicated and loaded down with trivial details operating process, reached predetermined
Instrument mode output, it is achieved that the on-the-spot in-circuit function test to automobile combination meter, add the real work of instrument
The prompting of state display comparison output synchronization indicator, completes the test job to automobile combination meter comprehensively.And there is structure
Simply, easy to use, be easy to carry, dependable performance, on-the-spot test, avoid erroneous judgement, strong adaptability, be widely used, economical and practical,
It is suitable for the advantages such as popularization.
Accompanying drawing explanation
Fig. 1 is the detection device overall structure schematic diagram of portable vehicle combination instrument；
Fig. 2 is program control analog signal generator circuit diagram；
Fig. 3 is programmed control frequency signal generator circuit figure.
Detailed description of the invention
The detection device of portable vehicle combination instrument shown in Fig. 1-Fig. 3 is designed and developed on the basis of prior art
Plant economical and practical type automobile combination instrument test device.It mainly realizes the automobile combination meter survey to pointer indication signal
Examination, realizes high and low level by Single-chip Controlling simultaneously and drives the test of alarm signal and the different display sides of automobile instrument
The test of formula.Described device be programmed control frequency signal generator 1, program control analog signal generator 2, signal are arranged controller 3,
The output signal of operation control panel 4 is respectively connected to the input of single-chip microcomputer 9 and controls end, simultaneously by frequency signal driver 5, simulation
Signal driver 6, alarm signal driver 7, the input control end of output synchronization indicator 8 and the output control terminal of single-chip microcomputer 9
Be connected realization.Wherein programmed control frequency signal generator 1 is the internal pulses modulated signal PWM warp utilizing single-chip microcomputer 9 to control
The amplifying circuit of audion Q1 and resistance R1, R2 composition obtains (such as Fig. 3).Utilize Single Chip Microcomputer (SCM) program to control PWM input port, enter
And realize the output of frequency signal.As the driving input frequency signal of instrument, its frequency configuration can be by the side of serial communication
Formula, is arranged in the address location specified in parameter setting procedure.Its program control analog signal generator 2 is by operational amplifier
U0-U3 and resistance R3-R9, potentiometer W1, audion Q2, adjustable resistance Rmax form analogue signal, through A/D converter
AD7520JN converts analog signals into digital signal, then controlled to be exported by A/D converter AD7520JN by single-chip microcomputer 9 10
Position controls the different analogue signal resistance of data acquisition and gathers (such as Fig. 2) for single-chip microcomputer 9.10 A/D controlled by single-chip microcomputer 9 turn
The numerical value of N (between 0-1023) changed, the artifical resistance value that circuit can be made finally to produce can use formula to try to achieve:, by rationally arranging circuit parameter, utilize single-chip microcomputer 9 programme-control when parameter is arranged,
Input suitable N value and just can simulate the analogue signal resistance needed for test, it is achieved the input function of analogue signal.
During this utility model uses at the scene, first by signal, controller 3 is set to programmed control frequency signal generator 1
The frequency of its frequency signal and the analogue signal initial value of program control analog signal generator 2 are configured, when arranging, for difference
The instrument of kind should arrange specific aim parameter, and each instrument can have one or more frequency signal and one group or organize simulation more
Signal initial value.The most program control analog signal generator 2, by arranging different N values, just can obtain one group or organize difference more
Analogue signal, described analogue signal and frequency signal are stored in memory element in advance by single-chip microcomputer 9.Operation control panel 4,
Just can control, according to the function set, the signal that output is different under single-chip microcomputer 9 programme-control, meanwhile, be driven by single-chip microcomputer 9
Switching value that dynamic frequency signal driver 5, analogue signal driver 6 and single-chip microcomputer 9 outfan control and drive alarm signal
Driver 7.And by the prompting of actual working state display comparison output synchronization indicator 8, complete one by one automobile combination instrument
The online automatic detection work of table.
This device can meet the detection of instrument traditional performance and the analog detection of 32 road warning lights of four gauge outfits, online
Test site can accurately judge fault, takes specific aim maintenance program in time.Meet after-sale service station related personnel to automobile group
Close the on-the-spot in-circuit function test of instrument, it is to avoid the erroneous judgement that automobile instrument is caused by anthropic factor.Be practice have shown that by test, this dress
Put applied widely, switching arrange simple, easy for operation, capacity of resisting disturbance is strong, measuring accuracy is high, length in service life and tool
Have broad application prospects.
Claims (1)
1. a detection device for portable vehicle combination instrument, is sent out by programmed control frequency signal generator (1), program control analogue signal
Raw device (2), signal arrange controller (3), operation control panel (4), frequency signal driver (5), analogue signal driver
(6), alarm signal driver (7), output synchronization indicator (8), single-chip microcomputer (9) composition, it is characterised in that: programmed control frequency is believed
Number generator (10), program control analog signal generator (2), signal arrange the output letter of controller (3), operation control panel (4)
Number it is respectively connected to single-chip microcomputer (9) input and controls end, and by frequency signal driver (5), analogue signal driver (6), alarm signal
Number driver (7), the input of output synchronization indicator (8) control end and are connected with the output control terminal of single-chip microcomputer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057994.5U CN205537722U (en) | 2016-01-21 | 2016-01-21 | Detection apparatus for portable car combination meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057994.5U CN205537722U (en) | 2016-01-21 | 2016-01-21 | Detection apparatus for portable car combination meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205537722U true CN205537722U (en) | 2016-08-31 |
Family
ID=56766305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620057994.5U Expired - Fee Related CN205537722U (en) | 2016-01-21 | 2016-01-21 | Detection apparatus for portable car combination meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205537722U (en) |
-
2016
- 2016-01-21 CN CN201620057994.5U patent/CN205537722U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180121 |