CN103727989A - Digital type CNG tank residual gas volume monitoring system - Google Patents
Digital type CNG tank residual gas volume monitoring system Download PDFInfo
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- CN103727989A CN103727989A CN201410008971.0A CN201410008971A CN103727989A CN 103727989 A CN103727989 A CN 103727989A CN 201410008971 A CN201410008971 A CN 201410008971A CN 103727989 A CN103727989 A CN 103727989A
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- chip microcomputer
- liquid crystal
- crystal display
- electronic control
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Abstract
The invention discloses a digital type CNG tank residual gas volume monitoring system which is used for solving the problem of digital display of residual gas volume of a gas tank of a CNG-fueled car. The digital type CNG tank residual gas volume monitoring system comprises an instrument panel, an integrated electronic control board, a key, a liquid crystal display and two turbine flowmeters, wherein the key and the liquid crystal display are installed on the instrument panel, the two turbine flowmeters are installed on a gas inlet pipeline and a gas outlet pipeline of the gas tank respectively, the flowmeter installed on the gas inlet pipeline converts gas inlet volume into digital signals and transmits the digital signals to the integrated electronic control board, the digital signals and E2PROM original data on the control board are summed and are displayed again, the flowmeter installed on the gas outlet pipeline converts gas consumption into digital signals and transmits the digital signals to the integrated electronic control board, and the digital signals and the E2PROM original data are subtracted and are displayed again.
Description
Technical field
The present invention relates to car electrics technical field, be specifically related to a kind of digital CNG gas tank residue tolerance monitoring system.
Background technology
The monitoring of CNG gas tank residue tolerance is the important subsidiary function of CNG automobile the next item up, for showing gas cylinder residue gas quantity.Tolerance monitoring system on CNG automobile is normally comprised of pressure transducer, single-chip computer control system and LED light at present, the residue tolerance by gas tank that can only be rough is divided into 4-6 stages, indicate with LED, can not accurately show remaining tolerance in gas tank, driver's driving is caused to inconvenience.
Summary of the invention
In order to provide and to remain more accurately tolerance data to driver, the invention provides a kind of CNG gas tank residue tolerance monitoring system, can accurately obtain residue tolerance digitizing and show.
Technical solution of the present invention is as follows:
The automobile-used residual gas amount detection systems of a kind of digital CNG, it comprises instrument face plate, integrated electronic control panel, be arranged on button on instrument face plate and liquid crystal display and two is arranged on respectively the turbo flow meter of gas cylinder admission line and outlet pipe.Button on described instrument face plate is connected with integrated electronic control panel by electronic circuit with liquid crystal display.
On described instrument face plate, there are a liquid crystal display and a button.Liquid crystal display is used for showing CNG gas tank residue tolerance, and button is for zero clearing.
Integrated electronic control panel has adopted single-chip computer control system, and it is STC89C52 that single-chip microcomputer is selected model, after the flow signal of turnover feed channel is gathered by turbo flow meter respectively, inputs to single-chip computer control system.In single-chip computer control system, there is E
2prom memory, can guarantee that data power-off do not lose, and it selects model is AT24C02 type.The output terminal of single-chip computer control system is connected to LCD circuit for showing CNG gas cylinder residue tolerance, selects LCD1602 type liquid crystal display.Described single-chip computer control system can well intercept interference voltage, guarantees that vehicle is under different transport conditions, and instrument can normally show CNG gas cylinder residue tolerance.
Two turbo flow meters are arranged on respectively on the inlet, outlet pipeline of CNG gas cylinder.Described turbo flow meter is selected LWQ-25 type, can measure accurately the gas flow of turnover gas cylinder, and signal is transferred to single-chip computer control system.
In addition, the present invention adopts single-chip computer control system, and reliability is higher; Cheap for showing the liquid crystal display of CNG gas cylinder residue tolerance, the life-span is longer, can show like this and required function also can reduce costs in the time of guaranteed performance.
The invention has the beneficial effects as follows: residue tolerance and the digitizing that can accurately detect gas tank show, to driver, bring convenience.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is that the single-chip microcomputer of the automobile-used residue tolerance of digital CNG shown in Fig. 1 monitoring system connects pin figure.
Fig. 3 is the main program block diagram of the automobile-used residue tolerance of digital CNG shown in Fig. 1 monitoring system.
Embodiment
Referring to Fig. 1, this digital CNG gas tank residual gas amount detection systems comprises an instrument face plate 1, has a LCD1602 type liquid crystal display 2 and a button 3 on instrument face plate 1.Instrument face plate has an integrated electronic control panel behind, by the pinout to single-chip microcomputer, realizes procedure operation.
Referring to Fig. 2, STC89C52 type single-chip microcomputer is connected as follows with the pin of LCD1602 type liquid crystal display: liquid crystal display 1,2 ends connect power supply; Liquid crystal display 3 ends regulate contrast by the potentiometer of a 10K; Liquid crystal display 4 ends, for to write data/write order selecting side to LCD controller, connect single-chip microcomputer P3.5 mouth; Liquid crystal display 5 ends are read/write selecting side, because not needing to read in the present invention liquid crystal display, so ground connection; Liquid crystal display 6 ends are enable signal, connect single-chip microcomputer P3.4 mouth; Liquid crystal display 7 to 14 termination single-chip microcomputer P0 mouths, for data transmission; Liquid crystal display 15,16 ends are backlight electric power, prevent from directly adding 5V voltage burn out backlight at 10 resistance of 15 end serial connections.STC89C52 type single-chip microcomputer with AT24C02 type E
2the pin of PROM connects as follows: E
2all ground connection of A0, A1, A2 and WP of PROM; SDA connects single-chip microcomputer P2.0 pin; SCL connects single-chip microcomputer P2.1 pin; SDA and SCL are respectively and between VCC, connect a 10K pull-up resistor.Button on instrument face plate connects the P1.0 pin of single-chip microcomputer; The LWQ-25 type turbo flow meter being arranged on admission line connects single-chip microcomputer P1.1 pin, and the LWQ-25 type turbo flow meter being arranged on outlet pipe connects single-chip microcomputer P1.2 pin.
Referring to Fig. 3, after system powers on, liquid crystal display can show and had E last time
2data in PROM.After pushing button, can be to E
2pROM carries out clear operation, and liquid crystal display also can show in zero clearing.When CNG gas tank is carried out to aerating, be arranged on turbo flow meter on admission line and will add tolerance and pass to single-chip microcomputer with digital signal, single-chip microcomputer is these data and E
2data in PROM are done and also storage again; When running car, the turbo flow meter being arranged on outlet pipe is passed to single-chip microcomputer by gas consumption with digital signal, and single-chip microcomputer is E
2data in PROM and gas consumption are done poor and storage again.Every 1S, again read E
2data in PROM, and refresh the displaying contents of a liquid crystal display, make driver can know real-time and accurately automobile residue tolerance.
Claims (2)
1. a digital CNG gas tank residue tolerance monitoring system, it is characterized in that: comprise the instrument face plate, integrated electronic control panel and two turbo flow meters that are provided with button, liquid crystal display, described two turbo flow meters are arranged on respectively on the inlet, outlet pipeline of CNG gas cylinder; Described button, turbo flow meter are connected with the signal input part of integrated electronic control panel respectively, and described liquid crystal display is connected with the signal output part of integrated electronic control panel.
2. digital CNG gas tank residue tolerance monitoring system according to claim 1, is characterized in that: described integrated electronic control panel includes STC89C52 type single-chip microcomputer and AT24C02 type E
2pROM, described liquid crystal display is LCD1602 type, described turbine flow is counted LWQ-25 type; Described button is connected with the P1.0 mouth of single-chip microcomputer; Described E
2the A0 of PROM holds, A1 holds, A2 end is held all ground connection with WP, SDA termination single-chip microcomputer P2.0 pin, and SCL termination single-chip microcomputer P2.1 pin, SDA end and SCL hold respectively and connect between VCC a 10K pull-up resistor; 1,2 ends of described liquid crystal display connect power supply, and the potentiometer that 3 ends connect a 10K regulates contrast, 4 termination single-chip microcomputer P3.5 mouths, 5 end ground connection, 6 termination single-chip microcomputer P3.4 mouths, 7 to 14 termination single-chip microcomputer P0 mouths, 15 one of termination, 10 resistance, 16 end ground connection; The described turbo flow meter being arranged on admission line connects single-chip microcomputer P1.1 pin, and the turbo flow meter being arranged on outlet pipe connects single-chip microcomputer P1.2 pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008971.0A CN103727989A (en) | 2014-01-09 | 2014-01-09 | Digital type CNG tank residual gas volume monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008971.0A CN103727989A (en) | 2014-01-09 | 2014-01-09 | Digital type CNG tank residual gas volume monitoring system |
Publications (1)
| Publication Number | Publication Date |
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| CN103727989A true CN103727989A (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410008971.0A Pending CN103727989A (en) | 2014-01-09 | 2014-01-09 | Digital type CNG tank residual gas volume monitoring system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646940A (en) * | 1984-05-16 | 1987-03-03 | Northern Indiana Public Service Company | Method and apparatus for accurately measuring volume of gas flowing as a result of differential pressure |
| JP2007078095A (en) * | 2005-09-15 | 2007-03-29 | Tatsuno Corp | Gas-filling device |
| CN201339528Y (en) * | 2009-01-22 | 2009-11-04 | 淄博职业学院 | Oil wear tester for diesel motor automobile with electric-controlled pump nozzle |
| CN101882513A (en) * | 2010-04-28 | 2010-11-10 | 重庆长安汽车股份有限公司 | Gas amount display switch for CNG (Compressed Natural Gas) vehicle |
| CN202278991U (en) * | 2011-11-08 | 2012-06-20 | 陕西重型汽车有限公司 | Combined instrument for CNG vehicle |
| CN202471343U (en) * | 2012-02-09 | 2012-10-03 | 奇瑞汽车股份有限公司 | CNG gas quantity display apparatus |
| CN203688012U (en) * | 2014-01-09 | 2014-07-02 | 兰州交通大学 | Digital CNG gas tank residual gas quantity monitoring system |
-
2014
- 2014-01-09 CN CN201410008971.0A patent/CN103727989A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646940A (en) * | 1984-05-16 | 1987-03-03 | Northern Indiana Public Service Company | Method and apparatus for accurately measuring volume of gas flowing as a result of differential pressure |
| JP2007078095A (en) * | 2005-09-15 | 2007-03-29 | Tatsuno Corp | Gas-filling device |
| CN201339528Y (en) * | 2009-01-22 | 2009-11-04 | 淄博职业学院 | Oil wear tester for diesel motor automobile with electric-controlled pump nozzle |
| CN101882513A (en) * | 2010-04-28 | 2010-11-10 | 重庆长安汽车股份有限公司 | Gas amount display switch for CNG (Compressed Natural Gas) vehicle |
| CN202278991U (en) * | 2011-11-08 | 2012-06-20 | 陕西重型汽车有限公司 | Combined instrument for CNG vehicle |
| CN202471343U (en) * | 2012-02-09 | 2012-10-03 | 奇瑞汽车股份有限公司 | CNG gas quantity display apparatus |
| CN203688012U (en) * | 2014-01-09 | 2014-07-02 | 兰州交通大学 | Digital CNG gas tank residual gas quantity monitoring system |
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| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB02 | Change of applicant information |
Inventor after: Song Xiaoyu Inventor after: Qiu Zeyang Inventor after: Fang Yubin Inventor before: Qiu Zeyang Inventor before: Fang Yubin Inventor before: Song Xiaoyu Inventor before: Li Jianhui |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161213 Address after: 730070 Anning West Road, Anning District, Gansu, Lanzhou, China, No. 88 Applicant after: Lanzhou Jiaotong University Applicant after: Song Xiaoyu Applicant after: Qiu Zeyang Applicant after: Fang Xingbin Address before: 730070 Anning West Road, Anning District, Gansu, Lanzhou, China, No. 88 Applicant before: Lanzhou Jiaotong University Applicant before: Qiu Zeyang Applicant before: Fang Yubin |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140416 |
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| RJ01 | Rejection of invention patent application after publication |