CN2470176Y - Digital display instrument for oil quantity special for automobile - Google Patents
Digital display instrument for oil quantity special for automobile Download PDFInfo
- Publication number
- CN2470176Y CN2470176Y CN 00258170 CN00258170U CN2470176Y CN 2470176 Y CN2470176 Y CN 2470176Y CN 00258170 CN00258170 CN 00258170 CN 00258170 U CN00258170 U CN 00258170U CN 2470176 Y CN2470176 Y CN 2470176Y
- Authority
- CN
- China
- Prior art keywords
- pointer
- oil mass
- oil quantity
- converter
- calibrated disc
- 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
Links
- 238000005259 measurement Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Images
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A digital display instrument for oil quantity of car is composed of a pointer-type oil quantity measurer, CPU, A/D converter, digital display unit and power supply. The pointer type oil quantity measuring device is a sensing measuring device consisting of a resistance type metal dial and a pointer contact, and can be arranged on an original automobile oil quantity display instrument panel and a pointer. The output end of the oil quantity measuring device is connected with the input end of the central processing unit through the A/D converter, and the output end of the central processing unit is connected with a display device. The device can display the oil quantity digitally, and is more visual and accurate than the traditional pointer type.
Description
The utility model relates to a kind of auto meter.
At present domestic automobile fuel tank fuel quantity read out instrument still adopts pointer display method, its shortcoming be can only be rough the estimation fuel tank in oil reserve, display precision is not high.
The purpose of this utility model is to provide that the supporting use of a kind of and existing automobile instrument panel, volume are small and exquisite, the automobile specified oil mass digital indicator of advanced technology, stable performance and safe in operation.
The utility model realizes that the above-mentioned purpose key is: it comprises pointer oil measurement device, central processor CPU, A/D converter, numeric display unit and a power supply; The calibrated disc of described pointer oil mass read out instrument is a resistance-type metallic conductor structure, the pointer inboard of pointer-type oil mass read out instrument has one with described hand motion with respect to above-mentioned calibrated disc stationkeeping, and the contact of maintenance and above-mentioned calibrated disc moving contact, the measurement mechanism of forming reflection oil mass number by described calibrated disc and pointer contact, IN0, the IN1 input end of the described A/D converter of two output terminations of this oil measurement device, the data output end P of described A/D converter
0P with described CPU
0Mouth is connected the P of described CPU
21, P
22Mouthful be display prot, be connected, will reflect that the oil mass digital signal delivers to numeric display unit and show with a numeric display unit.
The utility model is the product supporting with automobile instrument panel, and with the accurate detection of oil mass, with the variable quantity of resistance value, the mode that applied voltage transmits is continuously carried out signal conditioning by central process unit, and the control read out instrument carries out numeric display to oil mass.Its accuracy of detection is come intuitively more and accurate than the display mode of traditional pointer-type.
The drawing explanation:
Fig. 1 is the structure of transmitter schematic diagram of the oil mass digital indicator of automobile specified described in the utility model.
Fig. 2 is the A/D converter circuit diagram of automobile specified oil mass digital indicator described in the utility model.
Fig. 3 is that the central process unit of automobile specified oil mass digital indicator described in the utility model is implemented illustration.
Fig. 4 is the power unit circuit diagram of automobile specified oil mass digital indicator described in the utility model.
Below structure of the present utility model, principle of work are described as follows:
AB one has the metallic conductor (1) of scale among Fig. 1, it is fixed on the former automobile oil mass display instrument panel, its resistance is to change continuously from A-B, D is moving contact (2), be installed in pointer inboard on the former automobile oil mass display instrument panel with respect to above-mentioned calibrated disc position, in the whole process of described pointer indication, keep excellent contact with metallic conductor (1).This device can take out corresponding voltage signal according to the diverse location of pointer CD, delivers to CPU by the A/D conversion.Among Fig. 2,3, described oil mass signal is held output by A, C, with A/D converter IC
1IN0, IN1 input end be connected and A/D converter IC
1Data output end P
0With described IC
3The P of CPU
0Mouth is connected the P of described CPU
21, P
22Mouthful can with a numeric display unit, as: liquid crystal displays etc. are connected, and will reflect that the oil mass digital signal delivers to numeric display unit and show.Referring to Fig. 4, this device also comprises power supply MA * 619 chip circuit IC
4
Claims (1)
1. the oil mass digital indicator of an automobile specified, it is characterized in that: it comprises pointer oil measurement device, central processor CPU, A/D converter, numeric display unit and a power supply; The calibrated disc of described pointer oil mass read out instrument is a resistance-type metallic conductor structure, the pointer inboard of pointer-type oil mass read out instrument has one with described hand motion with respect to above-mentioned calibrated disc stationkeeping, and the contact of maintenance and above-mentioned calibrated disc moving contact, the measurement mechanism of forming reflection oil mass number by described calibrated disc and pointer contact, INO, the IN1 input end of the described A/D converter of two output terminations of this oil measurement device, the data output end P of described A/D converter
0P with described CPU
0Mouth is connected the P of described CPU
21, P
22Mouthful be display prot, be connected, will reflect that the oil mass digital signal delivers to numeric display unit and show with a numeric display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00258170 CN2470176Y (en) | 2000-10-18 | 2000-10-18 | Digital display instrument for oil quantity special for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00258170 CN2470176Y (en) | 2000-10-18 | 2000-10-18 | Digital display instrument for oil quantity special for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2470176Y true CN2470176Y (en) | 2002-01-09 |
Family
ID=33614544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00258170 Expired - Fee Related CN2470176Y (en) | 2000-10-18 | 2000-10-18 | Digital display instrument for oil quantity special for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2470176Y (en) |
-
2000
- 2000-10-18 CN CN 00258170 patent/CN2470176Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020109 Termination date: 20091118 |