CN203606029U - Detection device for motormeter brightness - Google Patents
Detection device for motormeter brightness Download PDFInfo
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- CN203606029U CN203606029U CN201320688089.6U CN201320688089U CN203606029U CN 203606029 U CN203606029 U CN 203606029U CN 201320688089 U CN201320688089 U CN 201320688089U CN 203606029 U CN203606029 U CN 203606029U
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Abstract
Provided is a detection device for motormeter brightness. The device comprises a single-chip microcomputer unit, a human-computer interface, a meter current detection unit, a meter brightness detection unit, an A/D conversion unit, a meter power control unit, and a host computer. A liquid crystal touch screen is used in the human-computer interface, and is connected with the single-chip microcomputer unit through an RS485 bus, and is used to set control parameters of the device and display detection results. Detection result output ends of the meter current detection unit and the meter brightness detection unit are connected with multipath simulation signal input ends of the A/D conversion unit. The A/D conversion unit communicates with the single-chip microcomputer unit through a SPI bus. The meter power control unit is controlled by 16-path output control interfaces of the single-chip microcomputer unit. The automatic detection method is used to replace manpower, and the device performs on-line detection on motormeter brightness and supply current. The device is high in automation degree, fast in detection speed, and is suitable for large-scale production line production of enterprise.
Description
Technical field
The utility model relates to a kind of automatic detection device, especially a kind of automobile instrument brightness and supply current automatic detection device.
Background technology
Automobile instrument is thrown light on by instrument panel lamp, in process of production, judges that by artificial experience sensed luminance whether instrument panel lamp is normal, tends to produce relatively large deviation, and meanwhile, labour productivity is low, is also not easy to production management.
Summary of the invention
The purpose of this utility model aims to provide one and can substitute manually, and the brightness to automobile instrument and supply current carry out the online device detecting.
The technical scheme that the utility model is taked is: a kind of automobile instrument luminance detection device, is made up of single machine unit, man-machine interface, instrument current detecting unit, instrument brightness detection unit, A/D converting unit, instrument power control module, host computer; Single machine unit is the control core of described device; Man-machine interface is liquid crystal touch screen, is connected with single machine unit by RS485 bus, shows for control setting parameter and the testing result of described device; The testing result output terminal of instrument current detecting unit and instrument brightness detection unit is connected to the multichannel analog signals input end of A/D converting unit; A/D converting unit communicates by spi bus and single machine unit; Instrument power control module is by the control of single machine unit 16 road output control interface.
Described single machine unit comprises single-chip microcomputer and RS485 bus transceiver, and single-chip microcomputer model is STC12C5A60S2.The reception signal output part of RS485 bus transceiver is connected to the serial communication receiving end of single-chip microcomputer, the output driver input end of RS485 bus transceiver is connected to the serial communication transmitting terminal of single-chip microcomputer, after the reception signal controlling end of RS485 bus transceiver and the parallel connection of output signal control end, be connected to reception/transmission control end of single-chip microcomputer; The interface of single machine unit also comprises that directly connecting Chu 16 tunnel output control interfaces, SPI interface and sheet from single-chip microcomputer selects control output end.
Described man-machine interface includes RS485 communication interface and RS232 communication interface, the RS485 communication interface of man-machine interface is connected with the RS485 bus transceiver of single machine unit, and the RS232 communication interface of man-machine interface is connected with the RS232 communication interface of host computer.Man-machine interface is the ET070 of step section liquid crystal touch screen.
Described A/D converting unit is made up of 3 12 bit serial analog to digital converter TLC2543, includes the multichannel analog signals input end of 32 tunnel input compositions; After the SPI interface parallel connection of 3 TLC2543, be connected to the SPI interface of single machine unit; The sheet that the sheet of 3 TLC2543 selects control input end to be connected to respectively single machine unit selects control output end.
Described instrument power control module comprises 16 instrument power control circuits that structure is identical, each instrument power control circuit is by current-limiting resistance, drive triode, relay, fly-wheel diode composition, wherein, drive the base stage of triode to be connected to one of Interface Terminal in single machine unit 16 road output control interface through current-limiting resistance, drive the collector of triode through be connected to+12V of the coil of relay power supply, fly-wheel diode is connected in parallel on the coil two ends of relay, normal open switch one end be connected to+12V power supply of relay, the wherein controllable electric power of 1 tunnel instrument of one end Wei16 road instrument in addition, be connected to corresponding instrument power end.
Described instrument current detecting unit comprises 16 instrument current detection circuits that structure is identical, each instrument current detection circuit is made up of instrument power line and Hall current sensor, and the output signal of Hall current sensor is connected to one of input terminal of multichannel analog signals input end in A/D converting unit.
Described instrument brightness detection unit comprises 16 instrument luminance detection circuit that structure is identical, and each instrument luminance detection circuit is made up of light sensor and pull-up resistor, and light sensor is visual photometric brightness sensor On9658.Light sensor connect with pull-up resistor after by Power supply, the voltage on pull-up resistor is connected to one of input terminal of multichannel analog signals input end in A/D converting unit.
The beneficial effects of the utility model are to use liquid crystal touch screen to carry out man-machine interaction, intuitive and convenient; Automatically detect and substitute manual detection, accuracy is high; Automaticity is high, and detection speed is fast, is applicable to large-scale production line production.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is single machine unit interface configuration figure of the present utility model.
Fig. 3 is A/D conversion unit circuit schematic diagram of the present utility model.
Fig. 4 is 1# instrument power control circuit figure in instrument power control module of the present utility model.
Fig. 5 is 1# instrument current detection circuit figure in instrument current detecting unit of the present utility model.
Fig. 6 is 1# instrument luminance detection circuit figure in instrument brightness detection unit of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
With reference to Fig. 1, automobile instrument luminance detection device described in the utility model is made up of single machine unit 100, man-machine interface 200, instrument current detecting unit 300, instrument brightness detection unit 400, A/D converting unit 500, instrument power control module 600, host computer 700.Single machine unit 100 is control cores of described device; Man-machine interface 200 is liquid crystal touch screens, is connected with single machine unit 100 by RS485 bus, shows for control setting parameter and the testing result of described device; The testing result output terminal of instrument current detecting unit 300 and instrument brightness detection unit 400 is connected to the multichannel analog signals input end of A/D converting unit 500; A/D converting unit 500 communicates by spi bus and single machine unit 100; Instrument power control module 600 is controlled by single machine unit 100 16 tunnel output control interface OUT2.
Fig. 2 is the interface configuration figure of single machine unit 100, and single-chip microcomputer 101 is selected the STC12C5A60S2 of macrocrystalline company, and RS485 bus transceiver 102 models are MAX485.Described device You16 road instrument sense channel, can control realization and detect simultaneously, or part detects.Single machine unit 100 16 tunnel output control interface OUT2 are carried on a shoulder pole by P0 mouth and the P2 mouthpiece of single-chip microcomputer 101, and P0.0～P0.7, P2.0～P2.7 is corresponding OUT2-1～OUT2-16 respectively.P1.5, the P1.6 of single-chip microcomputer 101, P1.7 are MOSI, MISO, the SCLK signals of SPI interface, and P1.0, P1.1, P1.2 are that sheet selects control output end CS1, CS2, CS3.The reception signal output part RO of RS485 bus transceiver 102 is connected to the serial communication receiving end RXD of single-chip microcomputer 101, the serial communication transmitting terminal TXD that output driver input end is connected to single-chip microcomputer 101, after the reception signal controlling end RE of RS485 bus transceiver 102 and output signal control end DE parallel connection, be connected to reception/transmission control end P1.3 of single-chip microcomputer 101.Man-machine interface 200 is selected the ET070 of step section.Man-machine interface 200 communicates by RS485 communication interface COM1 and single machine unit 100, and COM1 is connected to the RS485 bus transceiver 102 of single machine unit 100; Man-machine interface 200 communicates by RS232 communication interface COM2 and host computer 700.Host computer 700 is industrial control computer, for obtaining detection data from man-machine interface 200, carries out production management.
Fig. 3 is the circuit theory diagrams of A/D converting unit 500.Need to detect instrument power data He16 road, the data You16 road brightness data of conversion, Gong32 road.In A/D converting unit 500, have 3 12 bit serial analog to digital converters, model is TLC2543, every TLC2543 You11 road simulating signal input, 3 Ke Dui 33 road analog input signals carry out A/D conversion.Use wherein 32 road channeling input end of analog signal, wherein, multichannel analog signals input end AIN1 has AIN1-1 to AIN1-16, and Gong16 road, for realizing the A/D conversion of 16 tunnel instrument electric currents; Multichannel analog signals input end AIN2 has AIN2-1 to AIN2-16, and Gong16 road, for realizing the A/D conversion of 16 tunnel instrument brightness.The SPI interface of analog to digital converter 501, analog to digital converter 502, analog to digital converter 503 is connected in parallel to the SPI interface of single machine unit 100; The sheet that the sheet of analog to digital converter 501, analog to digital converter 502, analog to digital converter 503 selects control input end CS to be connected to respectively single machine unit 100 selects control output end CS1, CS2, CS3.
Fig. 4 is in instrument power control module 600, and 16 tunnel instrument 1# instrument power control circuit figure is wherein made up of current-limiting resistance R601, driving triode T601, relay K A601, sustained diode 601.Drive the base stage of triode T601 to be connected to one of the Interface Terminal in single machine unit 100 16 tunnel output control interface OUT2 OUT2-1, collector through be connected to+12V of the coil of relay K A601 power supply through current-limiting resistance R601; Sustained diode 601 is connected in parallel on the coil two ends of relay K A601; Normal open switch one end be connected to+12V power supply of relay K A601, one end is the controllable electric power of 1# instrument in addition, is connected to 1# instrument power end.Power control circuit figure and the 1# of 2# to 16# instrument are in full accord, in Fig. 4, do not draw.Single-chip microcomputer 101 can be controlled Xiang16 road instrument and power simultaneously, realizes simultaneously and detecting, and also can, to part instrument power supply wherein, carry out part detection.
Fig. 5 is in instrument current detecting unit 300,16 tunnel instrument 1# instrument current detection circuit figure wherein, formed Hall current sensor employing ± 12V Power supply, output and the directly proportional 0～5V DC voltage of DC current by 1# instrument power line and Hall current sensor 1.In Fig. 5,1# instrument power line is through Hall current sensor, and the output signal of Hall current sensor 1 is connected to one of the input terminal in multichannel analog signals input end AIN1 AIN1-1.Current detection circuit figure and the 1# of 2# to 16# instrument are in full accord, in Fig. 5, do not draw.
Fig. 6 is in instrument two ends detecting unit 400, and 16 tunnel instrument 1# instrument luminance detection circuit figure wherein, is made up of light sensor 1 and pull-up resistor R401.Light sensor is selected visual photometric brightness sensor On9658, employing+5V Power supply, output current and illuminance relation in direct ratio.In Fig. 6, light sensor connect with resistance R 401 after by+5V Power supply, the voltage of the upper output of pull-up resistor R401 and illuminance relation in direct ratio, this voltage is connected to one of the input terminal in multichannel analog signals input end AIN2 AIN2-1.Luminance detection circuit figure and the 1# of 2# to 16# instrument are in full accord, in Fig. 6, do not draw.
Claims (5)
1. an automobile instrument luminance detection device, is characterized in that: be made up of single machine unit, man-machine interface, instrument current detecting unit, instrument brightness detection unit, A/D converting unit, instrument power control module, host computer;
Described single machine unit comprises single-chip microcomputer and RS485 bus transceiver; The reception signal output part of RS485 bus transceiver is connected to the serial communication receiving end of single-chip microcomputer, the output driver input end of RS485 bus transceiver is connected to the serial communication transmitting terminal of single-chip microcomputer, after the reception signal controlling end of RS485 bus transceiver and the parallel connection of output signal control end, be connected to reception/transmission control end of single-chip microcomputer; The interface of single machine unit also comprises that directly connecting Chu 16 tunnel output control interfaces, SPI interface and sheet from single-chip microcomputer selects control output end;
Described man-machine interface includes RS485 communication interface and RS232 communication interface, the RS485 communication interface of man-machine interface is connected with the RS485 bus transceiver of single machine unit, and the RS232 communication interface of man-machine interface is connected with the RS232 communication interface of host computer;
Described A/D converting unit is made up of 3 12 bit serial analog to digital converter TLC2543, includes the multichannel analog signals input end of 32 tunnel input compositions; After the SPI interface parallel connection of 3 12 bit serial analog to digital converter TLC2543, be connected to the SPI interface of single machine unit; The sheet that the sheet of 3 12 bit serial analog to digital converter TLC2543 selects control input end to be connected to respectively single machine unit selects control output end;
Described instrument power control module comprises 16 instrument power control circuits that structure is identical, each instrument power control circuit is by current-limiting resistance, drive triode, relay, fly-wheel diode composition, wherein, drive the base stage of triode to be connected to one of Interface Terminal in single machine unit 16 road output control interface through current-limiting resistance, drive the collector of triode through be connected to+12V of the coil of relay power supply, fly-wheel diode is connected in parallel on the coil two ends of relay, normal open switch one end be connected to+12V power supply of relay, the wherein controllable electric power of a road instrument of one end Wei16 road instrument in addition,
Described instrument current detecting unit comprises 16 instrument current detection circuits that structure is identical, each instrument current detection circuit is made up of instrument power line and Hall current sensor, and the output signal of Hall current sensor is connected to one of input terminal of multichannel analog signals input end in A/D converting unit;
Described instrument brightness detection unit comprises 16 instrument luminance detection circuit that structure is identical, each instrument luminance detection circuit is made up of light sensor and pull-up resistor, light sensor connect with pull-up resistor after by Power supply, the voltage on pull-up resistor is connected to one of input terminal of multichannel analog signals input end in A/D converting unit.
2. automobile instrument luminance detection device as claimed in claim 1, is characterized in that: described man-machine interface is the ET070 of step section liquid crystal touch screen.
3. automobile instrument luminance detection device as claimed in claim 1, is characterized in that: described single-chip microcomputer model is STC12C5A60S2.
4. automobile instrument luminance detection device as claimed in claim 1, is characterized in that: described light sensor is visual photometric brightness sensor On9658.
5. automobile instrument luminance detection device as claimed in claim 1, is characterized in that: described RS485 bus transceiver model is MAX485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688089.6U CN203606029U (en) | 2013-11-04 | 2013-11-04 | Detection device for motormeter brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688089.6U CN203606029U (en) | 2013-11-04 | 2013-11-04 | Detection device for motormeter brightness |
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| Publication Number | Publication Date |
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| CN203606029U true CN203606029U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320688089.6U Expired - Fee Related CN203606029U (en) | 2013-11-04 | 2013-11-04 | Detection device for motormeter brightness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157828A (en) * | 2015-08-17 | 2015-12-16 | 上海熙视光电科技有限公司 | Automobile interior decorative component LED light belt brightness value detection system |
-
2013
- 2013-11-04 CN CN201320688089.6U patent/CN203606029U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157828A (en) * | 2015-08-17 | 2015-12-16 | 上海熙视光电科技有限公司 | Automobile interior decorative component LED light belt brightness value detection system |
| CN105157828B (en) * | 2015-08-17 | 2017-10-10 | 上海熙视光电科技有限公司 | A kind of automotive upholstery LED brightness value detecting system |
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| 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: 20140521 Termination date: 20141104 |
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| EXPY | Termination of patent right or utility model |