CN201159653Y - Automatic checking instrument of vehicle electronic instrument - Google Patents
Automatic checking instrument of vehicle electronic instrument Download PDFInfo
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- CN201159653Y CN201159653Y CNU2008200549254U CN200820054925U CN201159653Y CN 201159653 Y CN201159653 Y CN 201159653Y CN U2008200549254 U CNU2008200549254 U CN U2008200549254U CN 200820054925 U CN200820054925 U CN 200820054925U CN 201159653 Y CN201159653 Y CN 201159653Y
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Abstract
The utility model relates to an automatic electronic automobile instrument check meter, comprising a shell and a functional calibration circuit arranged inside the shell. A communication interface and a resistance output interface are embedded on the shell; the functional calibration circuit is composed of a central processing module, a power source managing module, a communication control module and a resistance output module. The power source managing module and the central processing module are respectively connected with the rest modules; the communication control module is connected with the communication interface; the resistance output module and the resistance output interface are connected. With above structure, the automatic electronic automobile instrument check meter is capable of outputting highly precise resistance signals to the instrument so that the instrument can modify the parameters after modulus AD acquisition so as to finish automatic check process, reaching the purpose of eliminating the influence from the error of the sampling resistor and making the instrument more accurate. Meanwhile, the automatic electronic automobile instrument check meter can support a position machine for control and is simple in structure, convenient and flexible to use, with reliable and stable work performance and wide application range.
Description
Technical field
The utility model relates to automotive electronics instrument control field, and particularly the automatic calibration technology field of automotive electronics instrument specifically is meant a kind of automotive electronics instrument automatic calibrating instrument.
Background technology
In the modern life, automobile has entered into family, and various new-type functions constantly are developed, particularly along with the development of automotive electronics instrument, stepper motor is used to refer to vehicle information such as the speed of a motor vehicle, engine speed, oil mass, engine water temperature by being applied on the automobile instrument more and more widely.
In the prior art, the great majority in the above-mentioned information all are to be converted to resistance signal by sensor.Along with the development of automotive electronics instrument, more and more higher to the requirement of accuracy of instrument.But can influence under certain conditions, the accuracy of instrument indication because sampling resistor has error.Further improve the precision of instrument if desired, then need to use more high-precision resistance to realize, but high-precision resistance can bring the increase of cost, and can not tackle the problem at its root, so just influenced people's normal use to a great extent, given people's work and life with very big inconvenience.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can effectively eliminate influence that the sampling resistor error brought, guarantee the instrument indication accurately, can support PC control, simple and practical, be easy to use flexibly, stable and reliable working performance, scope of application automotive electronics instrument automatic calibrating instrument comparatively widely.
In order to realize above-mentioned purpose, automotive electronics instrument automatic calibrating instrument of the present utility model has following formation:
This automotive electronics instrument automatic calibrating instrument, comprise the verifying function circuit in housing and the housing, its principal feature is, be embedded with communication interface and resistance output interface on the described housing, described verifying function circuit comprises central processing module, power management module, communication control module, the resistance output module, described power management module all is connected with other each module respectively, and described central processing module all is connected with other each module respectively, described communication control module is connected with described communication interface, and described resistance output module is connected with described resistance output interface.
The communication interface of this automotive electronics instrument automatic calibrating instrument comprises compunlcation interface and instrument communication interface, described communication control module comprises compunlcation interface unit, instrument communications interface unit and communication unit, described central processing module is connected with described compunlcation interface with the compunlcation interface unit by described communication unit successively, and described central processing module is connected with described instrument communication interface with the instrument communications interface unit by described communication unit successively.
The compunlcation interface of this automotive electronics instrument automatic calibrating instrument is the serial computer communication interface, described instrument communication interface is a serial instrument communication interface, described compunlcation interface unit is the serial computer communications interface unit, described instrument communications interface unit is a serial instrument communications interface unit, and described communication unit is a serial communication unit.
The resistance output module of this automotive electronics instrument automatic calibrating instrument comprises resistance output interface unit and resistance output unit, and described central processing module is connected with described resistance output interface with resistance output interface unit by described resistance output unit successively.
The central processing module of this automotive electronics instrument automatic calibrating instrument is the MCU module.
Adopted the automotive electronics instrument automatic calibrating instrument of this utility model, because it is after instrument sets up parameter, can export high-precision resistance signal to instrument according to the set parameter of instrument, and deliver to instrument by serial communication, instrument is gathered the back by modulus AD parameter is revised, thereby finished the function of automatic verification, reach and eliminate because the influence that the sampling resistor error is brought, make the indication of instrument more accurate, can support PC control simultaneously, simple and practical, be easy to use flexibly, stable and reliable working performance, the scope of application is comparatively extensive.
Description of drawings
Fig. 1 is the functional module structure synoptic diagram of automotive electronics instrument automatic calibrating instrument of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1, this automotive electronics instrument automatic calibrating instrument, comprise the verifying function circuit in housing and the housing, its principal feature is, be embedded with communication interface and resistance output interface 1 on the described housing, described verifying function circuit comprises central processing module 2, power management module 3, communication control module 4, resistance output module 5, described central processing module 2 can be the MCU module, described power management module 3 all is connected with other each module respectively, and described central processing module 2 all is connected with other each module respectively, described communication control module 4 is connected with described communication interface, and described resistance output module 5 is connected with described resistance output interface 1.
Wherein, the communication interface of this automotive electronics instrument automatic calibrating instrument comprises compunlcation interface 6 and instrument communication interface 7, described communication control module 4 comprises compunlcation interface unit, instrument communications interface unit and communication unit, described central processing module 2 is connected with described compunlcation interface 6 with the compunlcation interface unit by described communication unit successively, and described central processing module 2 also is connected with described instrument communication interface 7 with the instrument communications interface unit by described communication unit successively.
Simultaneously, described compunlcation interface 6 can be the serial computer communication interface, described instrument communication interface 7 can be serial instrument communication interface, described compunlcation interface unit is the serial computer communications interface unit, described instrument communications interface unit is a serial instrument communications interface unit, and described communication unit is a serial communication unit.
This resistance output module 5 comprises resistance output interface unit and resistance output unit, and described central processing module 2 is connected with described resistance output interface 5 with resistance output interface unit by described resistance output unit successively.
In the middle of practical application, this stepper motor detector at zero point composed as follows:
(1) power module---be used for to each device operate as normal power supply.
(2) MCU module---be the nucleus module of automotive electronics instrument check instrument, be connected with each module and realize connecting each other between each module, the output of controlling resistance signal and with the communication of instrument and host computer.
(3) resistance output module---can export different resistance values by the control of MCU, precision is controlled at 0.1 ohm.Also can be by manual operation to external knob resistance, continuously smooth output 1～999 Ohmage.
(4) communication module---by serial communication, be used to connect host computer and instrument,, finish calibration in an orderly manner according to the indication of host computer.
The basic functional principle of this automotive electronics instrument automatic calibrating instrument is as follows:
Power switch is opened, power module begins to power to automotive electronics instrument automatic calibrating instrument, after finishing, the initialization of automotive electronics instrument automatic calibrating instrument waits for that upper software sends signal, after receiving the signal that host computer sends, need to have determined the instrument parameter information of calibration, calibrate in an orderly manner according to the indication of host computer then: export earlier a high-precision resistance successively, inform the resistance value of instrument output simultaneously by communication module, instrument is according to the collection value of AD, revise and preserve by parameter that the comparison of actual AD value and theoretical AD value and compensating gage are got it right, thereby realized automatic calibration.
The advantage of stepper motor detector at zero point of the present utility model is as follows:
(1) each function adopts modular design, more reliable performance.
(2) adopt 2 laminate PCB design, multimeter pastes element, more compact structure, and integrated level is higher.
(3) can calibrate the little table that 5 resistance signals are imported at most simultaneously, be fit to the instrument of various different demands.
(4) reach the purpose of control instrument precision by software, not only improved the pointing accuracy of instrument greatly, and reduced the cost of electronic devices and components, reduced the workload of generally acknowledging on the line when producing in batches simultaneously, the automated production of instrument is very helpful.
(5) adopt international up-to-date automotive electronics device, performance is more advanced.
Adopted above-mentioned automotive electronics instrument automatic calibrating instrument, because it is after instrument sets up parameter, can export high-precision resistance signal to instrument according to the set parameter of instrument, and deliver to instrument by serial communication, instrument is gathered the back by modulus AD parameter is revised, thereby finished the function of automatic verification, reach and eliminate because the influence that the sampling resistor error is brought, make the indication of instrument more accurate, can support PC control simultaneously, simple and practical, be easy to use flexibly, stable and reliable working performance, the scope of application is comparatively extensive.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1, a kind of automotive electronics instrument automatic calibrating instrument, comprise the verifying function circuit in housing and the housing, it is characterized in that, be embedded with communication interface and resistance output interface on the described housing, described verifying function circuit comprises central processing module, power management module, communication control module, the resistance output module, described power management module all is connected with other each module respectively, and described central processing module all is connected with other each module respectively, described communication control module is connected with described communication interface, and described resistance output module is connected with described resistance output interface.
2, automotive electronics instrument automatic calibrating instrument according to claim 1, it is characterized in that, described communication interface comprises compunlcation interface and instrument communication interface, described communication control module comprises compunlcation interface unit, instrument communications interface unit and communication unit, described central processing module is connected with described compunlcation interface with the compunlcation interface unit by described communication unit successively, and described central processing module is connected with described instrument communication interface with the instrument communications interface unit by described communication unit successively.
3, automotive electronics instrument automatic calibrating instrument according to claim 2, it is characterized in that, described compunlcation interface is the serial computer communication interface, described instrument communication interface is a serial instrument communication interface, described compunlcation interface unit is the serial computer communications interface unit, described instrument communications interface unit is a serial instrument communications interface unit, and described communication unit is a serial communication unit.
4, automotive electronics instrument automatic calibrating instrument according to claim 1, it is characterized in that, described resistance output module comprises resistance output interface unit and resistance output unit, and described central processing module is connected with described resistance output interface with resistance output interface unit by described resistance output unit successively.
5, according to each described automotive electronics instrument automatic calibrating instrument in the claim 1 to 4, it is characterized in that described central processing module is the MCU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200549254U CN201159653Y (en) | 2008-01-22 | 2008-01-22 | Automatic checking instrument of vehicle electronic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200549254U CN201159653Y (en) | 2008-01-22 | 2008-01-22 | Automatic checking instrument of vehicle electronic instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159653Y true CN201159653Y (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200549254U Expired - Fee Related CN201159653Y (en) | 2008-01-22 | 2008-01-22 | Automatic checking instrument of vehicle electronic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159653Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090186A (en) * | 2014-07-03 | 2014-10-08 | 上海辰竹仪表有限公司 | Analog quantity automatic check system based on safety instrument |
| CN107121603A (en) * | 2017-04-12 | 2017-09-01 | 亿信标准认证集团有限公司 | For Digital Automobile combination instrument quality detecting system |
-
2008
- 2008-01-22 CN CNU2008200549254U patent/CN201159653Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090186A (en) * | 2014-07-03 | 2014-10-08 | 上海辰竹仪表有限公司 | Analog quantity automatic check system based on safety instrument |
| CN104090186B (en) * | 2014-07-03 | 2016-08-31 | 上海辰竹仪表有限公司 | A kind of analog quantity automatic checking system based on safety instrument |
| CN107121603A (en) * | 2017-04-12 | 2017-09-01 | 亿信标准认证集团有限公司 | For Digital Automobile combination instrument quality detecting system |
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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 |
Granted publication date: 20081203 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |