CN201484201U - Vehicle information LED indicating gauge - Google Patents
Vehicle information LED indicating gauge Download PDFInfo
- Publication number
- CN201484201U CN201484201U CN2009201869381U CN200920186938U CN201484201U CN 201484201 U CN201484201 U CN 201484201U CN 2009201869381 U CN2009201869381 U CN 2009201869381U CN 200920186938 U CN200920186938 U CN 200920186938U CN 201484201 U CN201484201 U CN 201484201U
- Authority
- CN
- China
- Prior art keywords
- signal
- shift register
- data
- processing unit
- indicating gauge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to a vehicle information LED indicating gauge. The vehicle information LED indicating gauge is characterized in that an LED array taking a shift register as a driver device is included, a data signal decomposition unit comprising a differentiating circuit and an integrating circuit is arranged for a data signal from a signal processing unit, the signal obtained by differentiating is treated as a clock signal for the shift register, and the signal obtained by integrating is treated as a data signal for the shift register. The utility model realizes the single-wire data transmission between the indicating gauge and the external information processing unit, reduces the scale of the circuit while ensuring that the vehicle information is flexibly displayed, especially reduces the connecting wire between the indicating gauge and the external information processing unit, and has convenient installation.
Description
Technical field
The utility model relates to the information of vehicles indicating device that is applied to status informations such as indication storage battery electric weight, oil pressure, water temperature in the engineering truck.
Background technology
At present the test indicator of the storage battery electric weight that is equipped with of engineering truck, oil pressure, water temperature has two kinds of forms: a kind of is compound type LCD display instrument, and another kind is the table of independently LCD or LED indication.The former outward appearance fashion, effect of visualization is very strong.But because the circuit complexity causes cost very high.Though latter's the former circuit scale relatively reduces to some extent, but general display driving part all will use micro controller system, even when using the shift register driving LED, the data transmission of test indicator and extraneous information processing unit also needs two leads, be clock line and data line, inconvenience is installed.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of circuit scale, cost-cutting cut down is provided, can reducing test indicator and outward sign processing unit connecting wire simultaneously, with the convenient information of vehicles LED test indicator of installing.
The utility model technical solution problem adopts following technical scheme:
The constructional feature of the utility model information of vehicles LED test indicator is: being provided with the shift register is the led array of driving element, the data-signal resolving cell that constitutes by differential and integrating circuit for data-signal setting from signal processing unit, with the signal of differential gained clock signal, with the data-signal of integration gained signal as described shift register as described shift register.
Constructional feature of the present utility model is that also described led array adopts the power supply form of the constant current source that is connected in series.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model is driving element with the shift register, substitute Micro Controller Unit (MCU) driving LED, the data-signal that utilizes differential and integrating circuit that information process unit is sent here decomposes, realized the solid wire data transmission between test indicator and extraneous information processing unit, both guaranteed to show information of vehicles flexibly, reduced circuit scale again, especially reduced connecting wire between test indicator and the extraneous information processing unit, the convenient installation.
2, the utility model led array adopts the power supply form of the constant current source that is connected in series, and entire circuit voltage range of use broad can be used on the vehicle of 20V～60V power supply.
3, the utility model carries out luminous demonstration by the LED pipe of adopting different colours, can enrich displaying contents.
Description of drawings
Fig. 1 is the utility model schematic circuit diagram.
Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
The specific embodiment
Referring to Fig. 1, setting is the led array of driving element with shift register IC1, the data-signal resolving cell that constitutes by differential and integrating circuit for data-signal setting from signal processing unit, with the signal of differential gained clock signal, with the data-signal of integration gained signal as described shift register as described shift register; Led array adopts the power supply form of the constant current source that is connected in series.
As shown in Figure 1, in the present embodiment, J1 is three core interfaces between test indicator and the external processing unit, and Q1, Q2 are respectively 2N5551 and KSA1281, and ic chip 1 is the shift register BU2090F that 12 bit strings are advanced and gone out, and LED1 is a light emitting diode matrix.
Shift register can drive 12 light-emitting diodes.When Data termination in the J1 interface is received the data pulse signal that the extraneous information processing unit sends here, the differential circuit of being made up of capacitor C 1 and resistance R 4 carries out the differential processing to the data impulse singla, and the signal behind the differential is as the clock signal of shift register BU2090F.
Form integrating circuit by resistance R 6 and capacitor C 3, the data impulse singla is carried out integration, the signal behind the integration is sent into the data receiver of shift register BU2090F.Because the integral signal after decomposing is slower than signal differential on sequential, at this moment, signal differential promptly can be used as the clock signal of shift register BU2090F and uses.Like this, on a frame data impulse singla, can obtain data-signal and can obtain clock signal again, just realize finishing being connected of test indicator and extraneous information processing unit with a lead.
When the Data of shift register mouth receives integral signal, it is data-signal, and at signal differential, also be under the effect of clock signal, when one by one the data of Data mouth being moved on to the corresponding Q port of shift register, the LED of led array corresponding positions is promptly lighted, and the information of vehicle also promptly is revealed.
Claims (2)
1. information of vehicles LED test indicator, it is characterized in that being provided with the shift register is the led array of driving element, the data-signal resolving cell that constitutes by differential and integrating circuit for data-signal setting from signal processing unit, with the signal of differential gained clock signal, with the data-signal of integration gained signal as described shift register as described shift register.
2. information of vehicles LED test indicator according to claim 1 is characterized in that described led array adopts the power supply form of the constant current source that is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201869381U CN201484201U (en) | 2009-08-13 | 2009-08-13 | Vehicle information LED indicating gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201869381U CN201484201U (en) | 2009-08-13 | 2009-08-13 | Vehicle information LED indicating gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201484201U true CN201484201U (en) | 2010-05-26 |
Family
ID=42423096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201869381U Expired - Fee Related CN201484201U (en) | 2009-08-13 | 2009-08-13 | Vehicle information LED indicating gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201484201U (en) |
-
2009
- 2009-08-13 CN CN2009201869381U patent/CN201484201U/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 |
Granted publication date: 20100526 Termination date: 20140813 |
|
| EXPY | Termination of patent right or utility model |