CN202528848U - Automobile electronic combination instrument - Google Patents
Automobile electronic combination instrument Download PDFInfo
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- CN202528848U CN202528848U CN2011204860827U CN201120486082U CN202528848U CN 202528848 U CN202528848 U CN 202528848U CN 2011204860827 U CN2011204860827 U CN 2011204860827U CN 201120486082 U CN201120486082 U CN 201120486082U CN 202528848 U CN202528848 U CN 202528848U
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- combination instrument
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Abstract
The utility model discloses an automobile electronic combination instrument and belongs to the technical field of automobile instrument display devices. The combination instrument mainly solves the problem that interchangeability among resistance-type sensors, voltage type sensors and pulse width modulation (PWM) wave output sensors is poor caused by the fact existing instruments and interface circuits of sensors are not universal. The combination instrument is mainly characterized by comprising an instrument circuit board which is provided with a microcontroller, an instrument support, a dial, an instrument pointer, a stepping motor, a connector, a button, a dot-matrix liquid crystal display, a housing, a lining board, glass and a signal processing circuit group, wherein a sampling circuit, a high-pass filter circuit and a low-pass filter circuit are sequentially connected to form the signal processing circuit group, all input ends of the signal processing circuit group are respectively connected with corresponding sensor outputs, and all output ends are respectively connected with corresponding microcontroller signal input ends. The combination instrument has the advantages that the maintenance of the whole automobile is facilitated, special members are reduced, the cost is low and instrument functions of the whole automobile are achieved.
Description
Technical field
The utility model belongs to auto meter display device technology field.Be specifically related to a kind of vehicle electronics combination instrument.
Background technology
Existing most of truck combination instrument; Its air pressure, cooling-water temperature sensor all are resistance-type or the output of linear voltage formula; Occurring a kind of sensor output at present is pulsewidth adjustable signal (PWM ripple), and its obstacle overcome ability and service life are all superior than sensor in the past, therefore needs a instrument; Its signal conditioning preferably can simultaneously compatible three kinds of sensors, also can exchange use to satisfy with output dissimilar between a kind of sensor.
Be used for showing the liquid crystal display of information simultaneously on the domestic general instrument, often only show go mileage number, clock, quantity of information is little, the real-time working condition of each parts, technical parameter, vehicle condition etc. when fully display automobile goes.Cars on hand is with the increasing sized of the development of liquid crystal display, and color is also more and more diversified.
Summary of the invention
The purpose of the utility model provides a kind of vehicle electronics combination instrument to above-mentioned weak point exactly, and its sensor signal is handled simultaneously compatible three kinds of sensors, and sensor can exchange use when sensor has fault to satisfy.Simultaneously engine oil pressure, power line voltage, engine operating duration are shown on liquid crystal, with low-cost, succinctly realize that intuitively meter information shows.
The technical solution of the utility model is: a kind of vehicle electronics combination instrument; Comprise instrument circuit board, instrument support, calibrated disc, meter hand, stepping motor, connector, button, dot lcd screen and the shell, liner plate, the glass that contain microcontroller, it is characterized in that: the integrated signal processing circuit group that connects and composes successively by sample circuit, high-pass filtering circuit, low-pass filter circuit on the described instrument circuit board; Wherein, each input end of signal processing circuit group is connected with the mouth of corresponding sensor respectively, and each mouth of signal processing circuit group is connected with corresponding microcontroller signal input part respectively.
Signal processing circuit group described in the technical solution of the utility model is two groups, and wherein the input end of one group of signal processing circuit is connected with the mouth of BARO sensor, and mouth is connected with the air pressure signal input end of microcontroller; The input end of another group signal processing circuit is connected with the mouth of cooling-water temperature sensor, and mouth is connected with the water temperature signal input end of microcontroller.
Dot lcd screen described in the technical solution of the utility model is graphical dots configuration liquid crystal display, and sets up engine oil pressure display space, power line voltage display space, mileage subtotal and mileage total display space, alarm message demonstration separately at this graphical dots configuration liquid crystal display.
Engine oil pressure display space described in the technical solution of the utility model, power line voltage display space, mileage subtotal and mileage amount to the display space, the alarm message demonstration is arranged from top to bottom.
The utility model comprises instrument circuit board, instrument support, calibrated disc, meter hand, stepping motor, connector, button, dot lcd screen and shell, liner plate, the glass that contains microcontroller; Because the integrated signal processing circuit group that connects and composes successively by sample circuit, high-pass filtering circuit, low-pass filter circuit on instrument circuit board; Wherein, Each input end of signal processing circuit group is connected with the mouth of corresponding sensor respectively; Each mouth of signal processing circuit group is connected with corresponding microcontroller signal input part respectively; Thereby when signal processing circuit input end connecting resistance formula output transducer, signal processing circuit utilizes sampling resistor to obtain voltage division signal; When signal processing circuit input termination voltage i went out sensor, signal processing circuit utilized high-pass filtering circuit that voltage input signal is carried out High frequency filter; When signal processing circuit input termination PWM ripple output transducer, signal processing circuit utilizes low-pass filter circuit that waveform signal is carried out low frequency filtering, realizes that three kinds of sensors are compatible simultaneously, and sensor can exchange use when sensor has fault to satisfy.The utility model is owing to adopt graphical dots configuration liquid crystal display; And set up engine oil pressure display space, power line voltage display space, mileage subtotal separately and mileage amounts to the display space, alarm message shows at this graphical dots configuration liquid crystal display; But thereby liquid crystal display not only display automobile travelled distance number, clock, date, can also the display machines oil pressure, multiple information such as power line voltage, engine operating duration.
The utility model overcomes can not compatibling problem with sensor with the automobile of multiple signal type, and it is easy to maintenance to have a car load, reduces special purpose parts, and the characteristics of implemented with low cost car load instrument function.The utility model is mainly used in the vehicle electronics combination instrument.
Description of drawings
Fig. 1 is the overall diagram of the utility model.
Fig. 2 is the signal processing circuit figure of the utility model.
Fig. 3 is the utility model liquid crystal interface block diagram.
The specific embodiment
As shown in Figure 1.The utility model 80B combination instrument is made up of the instrument circuit board that contains microcontroller, instrument support, calibrated disc, meter hand, stepping motor, connector, button, dot lcd screen and shell, liner plate, glass.Liquid crystal display is positioned at the below at instrument middle part.
As shown in Figure 2.The signal processing circuit group is connected and composed by sample circuit, high-pass filtering circuit, low-pass filter circuit successively, is two groups, is integrated on the instrument circuit board.One group of signal processing circuit is used to handle the air pressure sensing signal, and another group signal processing circuit is used to handle the water temperature transducing signal.Sample circuit is made up of sampling resistor R1, and sampling resistor R1 end is signal processing circuit input end IN end, and the other end is connected with voltage VCC.The resistance size of sampling resistor R1 is typically chosen in 100 ~ 200 ohm by the decision of resistive transducer coupling.High-pass filtering circuit is made up of resistance R 2 and capacitor C 1, and the time constant of low-pass filter circuit is unsuitable excessive, in order to avoid instrument is when starting working, the retained voltage of sampling end causes that the meter hand rising returns the problem of zero-bit again.Low-pass filter circuit is made up of resistance R 3 and capacitor C 2, and the oil pressure sensor fundamental frequency with the output of PWM ripple is about 1K at present, and the cooling-water temperature sensor PWM ripple signal fundamental frequency of Engine ECU output is in 50 ~ 200 hertz.The output pin of IN termination sensor (can be resistance-type, voltage-type and the output of PWM ripple), VCC is that sampled voltage can be+5V or 12V, MCU_1 connects the AD sampling pin of micro controller system.When IN terminating resistor formula output transducer, utilize sampling resistor R1 to obtain voltage division signal, requiring resistance precision is ± 1%; When IN termination voltage formula output transducer, high-pass filtering circuit carries out High frequency filter to voltage input signal; When IN termination PWM ripple output transducer, low-pass filter circuit carries out low frequency filtering to waveform signal.
As shown in Figure 3.Liquid crystal display is a graphical dots configuration liquid crystal display, sets up engine oil pressure display space, power line voltage display space, mileage subtotal and mileage separately and amounts to display space, alarm message demonstration.Engine oil pressure display space, power line voltage display space, mileage subtotal and mileage amount to the display space, the alarm message demonstration is arranged from top to bottom.Dot lcd screen is connected with the instrument microcontroller, and liquid crystal display is display automobile travelled distance number, clock, date not only, can also the display machines oil pressure, multiple information such as power line voltage, engine operating duration.
The utility model is handled three types of sensor signals of compatibility, makes things convenient for the client to use; Simultaneously engine oil pressure, power line voltage, engine operating duration are shown on liquid crystal.
Claims (4)
1. vehicle electronics combination instrument; Comprise instrument circuit board, instrument support, calibrated disc, meter hand, stepping motor, connector, button, dot lcd screen and the shell, liner plate, the glass that contain microcontroller, it is characterized in that: the integrated signal processing circuit group that connects and composes successively by sample circuit, high-pass filtering circuit, low-pass filter circuit on the described instrument circuit board; Wherein, each input end of signal processing circuit group is connected with the mouth of corresponding sensor respectively, and each mouth of signal processing circuit group is connected with corresponding microcontroller signal input part respectively.
2. a kind of vehicle electronics combination instrument according to claim 1; It is characterized in that: described signal processing circuit group is two groups; Wherein the input end of one group of signal processing circuit is connected with the mouth of BARO sensor, and mouth is connected with the air pressure signal input end of microcontroller; The input end of another group signal processing circuit is connected with the mouth of cooling-water temperature sensor, and mouth is connected with the water temperature signal input end of microcontroller.
3. a kind of vehicle electronics combination instrument according to claim 1 and 2; It is characterized in that: described dot lcd screen is graphical dots configuration liquid crystal display, and sets up engine oil pressure display space, power line voltage display space, mileage subtotal and mileage total display space, alarm message demonstration separately at this graphical dots configuration liquid crystal display.
4. a kind of vehicle electronics combination instrument according to claim 3 is characterized in that: described engine oil pressure display space, power line voltage display space, mileage subtotal and mileage amount to the display space, the alarm message demonstration is arranged from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204860827U CN202528848U (en) | 2011-11-30 | 2011-11-30 | Automobile electronic combination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204860827U CN202528848U (en) | 2011-11-30 | 2011-11-30 | Automobile electronic combination instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202528848U true CN202528848U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204860827U Expired - Fee Related CN202528848U (en) | 2011-11-30 | 2011-11-30 | Automobile electronic combination instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202528848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513598A (en) * | 2013-10-31 | 2014-01-15 | 厦门汇缘湾机电有限公司 | Vehicle-mounted information display device |
| CN113525082A (en) * | 2021-06-27 | 2021-10-22 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of full liquid crystal instrument |
-
2011
- 2011-11-30 CN CN2011204860827U patent/CN202528848U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513598A (en) * | 2013-10-31 | 2014-01-15 | 厦门汇缘湾机电有限公司 | Vehicle-mounted information display device |
| CN113525082A (en) * | 2021-06-27 | 2021-10-22 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of full liquid crystal instrument |
| CN113525082B (en) * | 2021-06-27 | 2022-07-15 | 东风电驱动系统有限公司 | Method and device for planning motion of virtual pointer of all-liquid crystal instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGFENG AUTOMOBILE ELECTRONICS CO., LTD. Free format text: FORMER NAME: DONGFENG XIANGFAN INSTRUMENT SYSTEMS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 441001 No. 227 East Daqing Road, Hubei, Xiangyang Patentee after: DONGFENG AUTOMOBILE ELECTRONICS CO., LTD. Address before: 441001 No. 227 East Daqing Road, Hubei, Xiangfan Patentee before: Dongfeng Xiangfan Instrument Systems Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20161130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |