CN202372568U - Dynamic data acquisition device - Google Patents
Dynamic data acquisition device Download PDFInfo
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- CN202372568U CN202372568U CN2011205549360U CN201120554936U CN202372568U CN 202372568 U CN202372568 U CN 202372568U CN 2011205549360 U CN2011205549360 U CN 2011205549360U CN 201120554936 U CN201120554936 U CN 201120554936U CN 202372568 U CN202372568 U CN 202372568U
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Abstract
The utility model discloses a dynamic data acquisition device which comprises a data acquisition unit, an analogue/digital conversion unit and a computer processing unit, wherein the data acquisition unit is in connector connection with an operational amplifying unit; the operational amplifying unit is in connector connection with the analogue/digital conversion unit; and the analogue/digital conversion unit is in conductor connection with the computer processing unit. According to the dynamic data acquisition device, the problems of low acquisition precision, high error rate and the like in the measurement process of dynamic voltage drop of an automobile electrical appliance switch by a conventional data acquisition system and the like are solved.
Description
Technical field
The utility model relates to the dynamic acquisition technology of voltage drop in the test of car electrics switch endurance.
Background technology
The detection that the car electrics switching voltage falls is an important step of whole quality check, under the regular situation inspection product contact drop all be Static Detection promptly to the switch contact that will detect pass to corresponding electric current; Connect switch, under static state, measure, after switch uses after a while with milivoltmeter; Because the oxidation of switch contact, the pressure drop of contact constantly raises, after reaching certain value; Even switch can regular event, electric property is also undesirable, therefore need carry out endurancing to electric switch; And the detection of dynamic of carrying out voltage drop, because the dynamic range of the voltage drop of all kinds of vehicle switch is very big, generally in the scope of the many volts of millivolt to 10; Conventional data acquisition system (DAS) can not satisfy the voltage drop detection of dynamic requirement of all kinds of vehicle switch; Cause in test process, acquisition precision is low, problems such as error rate height.
Summary of the invention
The technical matters that the utility model will solve: a kind of Dynamic Data Acquiring device is provided, problems such as routine data acquisition system acquisition precision in measured automobiles electric switch dynamic pressure drop process is low to solve, error rate height.
The utility model technical scheme:
A kind of Dynamic Data Acquiring device; It comprises data acquisition unit, AD conversion unit and computer processing unit; Data acquisition unit is connected with computing amplifying unit lead, and the computing amplifying unit is connected with the AD conversion unit lead, and AD conversion unit is connected with the computer processing unit lead.
The computing amplifying unit comprises digital regulation resistance and the amplifier that resistance is adjustable, and the digital regulation resistance that resistance is adjustable is connected through lead with amplifier.
The beneficial effect of the utility model:
The utility model adopts the adjustable digital regulation resistance of resistance; The size of the input simulating signal that collects according to data acquisition unit; Operational amplifier to such signal sampling designing gain is adjustable is handled; Can select range to amplify automatically or dwindle according to the size of input simulating signal, in native system, adopted the method for amplifier and digital regulation resistance to realize the automatic control of gain amplifier.The operational amplification circuit that the utility model adopts gain-variable to system acquisition to the feeble signal of vehicle switch is carried out the prime processing and amplifying; Be sent to single-chip microcomputer afterwards and carry out the A/D conversion; Conversion resolution is 12, carries out the processing of data afterwards through computer processing unit.Realize the dynamic acquisition of data message; The utility model adopts the adjustable computing amplifying unit of resistance; Satisfy the big problem of dynamic range of the voltage drop of vehicle switch, solved routine data acquisition system acquisition precision in measured automobiles electric switch dynamic pressure drop process low with problem such as error rate height.
Description of drawings:
Fig. 1 is the utility model functional module composition frame chart.
Embodiment:
A kind of Dynamic Data Acquiring device; It comprises (see figure 1) data acquisition unit, AD conversion unit and computer processing unit; Data acquisition unit is connected with computing amplifying unit lead; The computing amplifying unit is connected with the AD conversion unit lead, and AD conversion unit is connected with the computer processing unit lead.
The computing amplifying unit comprises digital regulation resistance and the amplifier that resistance is adjustable, and the digital regulation resistance that resistance is adjustable is connected through lead with amplifier.
The digital regulation resistance of being selected for use will have sufficiently high resolution, can satisfy the requirement to gain control.Can select the X9241M digital regulation resistance for use, there are 4 potentiometers its inside, has three kinds of resistances; The resolving power of each potentiometer reaches 1/63; Chip controls adopts the I2C bus, and gain can be selected the potentiometer of different resistances for use for different voltages with different, and changes the resistance value of sliding end with respect to stiff end through the numerical value that changes this potentiometer sliding end counter register; Thereby realize the adjustment of gain; The operational amplification circuit of the gain-variable that data acquisition is adopted to system acquisition to the feeble signal of vehicle switch is carried out the prime processing and amplifying, be sent to single-chip microcomputer afterwards and carry out the A/D conversion, conversion resolution is 12.Acquisition software is gathered according to the step and the passage of user's setting, and data in real time shows, and is stored in the hard disk of computing machine.The historical data of preserving can be recovered software through historical data these data are exported graphing again, and each channel data has three curves: maximal value, minimum value, mean value, detected element is analyzed.The utility model adopts the adjustable digital regulation resistance of resistance; Can satisfy from the signal Processing in the scopes of the many volts of millivolt to 10, solved routine data acquisition system acquisition precision in measured automobiles electric switch dynamic pressure drop process low with problem such as error rate height.
Claims (2)
1. Dynamic Data Acquiring device; It comprises data acquisition unit, AD conversion unit and computer processing unit; It is characterized in that: data acquisition unit is connected with computing amplifying unit lead; The computing amplifying unit is connected with the AD conversion unit lead, and AD conversion unit is connected with the computer processing unit lead.
2. a kind of Dynamic Data Acquiring device according to claim 1 is characterized in that: the computing amplifying unit comprises digital regulation resistance and the amplifier that resistance is adjustable, and the digital regulation resistance that resistance is adjustable is connected through lead with amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205549360U CN202372568U (en) | 2011-12-27 | 2011-12-27 | Dynamic data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205549360U CN202372568U (en) | 2011-12-27 | 2011-12-27 | Dynamic data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372568U true CN202372568U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205549360U Expired - Fee Related CN202372568U (en) | 2011-12-27 | 2011-12-27 | Dynamic data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372568U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488111A (en) * | 2013-09-29 | 2014-01-01 | 宁波市鄞州雪利曼电子仪表有限公司 | Automobile general switching collecting system |
| CN104052480A (en) * | 2013-03-12 | 2014-09-17 | 上海通用汽车有限公司 | Analog quantization method |
| CN106226688A (en) * | 2016-07-21 | 2016-12-14 | 宁波华德汽车零部件有限公司 | A kind of test equipment for automatically testing vehicle switch module performance |
| CN108008162A (en) * | 2018-01-12 | 2018-05-08 | 东华大学 | A kind of separator of the adjustable two-wire system current sensor exported in proportion |
| CN109307839A (en) * | 2018-11-23 | 2019-02-05 | 哈尔滨工业大学 | The circuit of contact drop is tested during ac electric apparatus electrical endurance |
| CN110673013A (en) * | 2019-09-02 | 2020-01-10 | 武汉光庭科技有限公司 | Automatic detection method and device for switch and switch circuit |
-
2011
- 2011-12-27 CN CN2011205549360U patent/CN202372568U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052480A (en) * | 2013-03-12 | 2014-09-17 | 上海通用汽车有限公司 | Analog quantization method |
| CN103488111A (en) * | 2013-09-29 | 2014-01-01 | 宁波市鄞州雪利曼电子仪表有限公司 | Automobile general switching collecting system |
| CN103488111B (en) * | 2013-09-29 | 2015-12-16 | 宁波市鄞州雪利曼电子仪表有限公司 | Universal automobile switch acquisition system |
| CN106226688A (en) * | 2016-07-21 | 2016-12-14 | 宁波华德汽车零部件有限公司 | A kind of test equipment for automatically testing vehicle switch module performance |
| CN108008162A (en) * | 2018-01-12 | 2018-05-08 | 东华大学 | A kind of separator of the adjustable two-wire system current sensor exported in proportion |
| CN109307839A (en) * | 2018-11-23 | 2019-02-05 | 哈尔滨工业大学 | The circuit of contact drop is tested during ac electric apparatus electrical endurance |
| CN109307839B (en) * | 2018-11-23 | 2020-08-11 | 哈尔滨工业大学 | Circuit for testing contact voltage drop in alternating current electrical appliance electrical life experimental process |
| CN110673013A (en) * | 2019-09-02 | 2020-01-10 | 武汉光庭科技有限公司 | Automatic detection method and device for switch and switch circuit |
| CN110673013B (en) * | 2019-09-02 | 2022-05-24 | 武汉光庭科技有限公司 | Automatic detection method and device for switch and switch circuit |
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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: 20120808 Termination date: 20171227 |