CN2687614Y - Vehicle speed odometer control circuit - Google Patents
Vehicle speed odometer control circuit Download PDFInfo
- Publication number
- CN2687614Y CN2687614Y CN 200420032751 CN200420032751U CN2687614Y CN 2687614 Y CN2687614 Y CN 2687614Y CN 200420032751 CN200420032751 CN 200420032751 CN 200420032751 U CN200420032751 U CN 200420032751U CN 2687614 Y CN2687614 Y CN 2687614Y
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Abstract
The utility model relates to an instrumentation control circuit of the vehicle and the motorcycle, in particular to a vehicle speed odometer control circuit used for displaying the vehicle speed and mileage. The utility model comprises a mileage display circuit, a vehicle speed display circuit, and a shared stabilized power supply circuit. The mileage display circuit is composed of a single-chip microcomputer IC2, a signal isolation amplifying circuit, a voltage detector IC4, an EEPROM memorizer IC1, and seven-segment LED digital display circuits. The vehicle speed display circuit is composed of a frequency and voltage transformation circuit, a voltage comparison drive circuit, and an LED display circuit. The vehicle speed odometer having the control circuit displays the vehicle speed and the mileage by replacing the original display in the mechanical driving method with the illuminated display of the LED light emitting device, making the dial face of the meter eye-catching and visual, and having beautiful dynamic sense and flexible design space. As the inside of the meter adopts fully-electronic structure, the utility model has small size and simple structure, increasing the reliability and the service life of the vehicle speed odometer.
Description
Technical field
The utility model relates to the instrumentation control circuit of automobile, motorcycle, especially for the control circuit of the speedometer that shows the speed of a motor vehicle and mileage.
Technical background
Development along with automobile, motorcycle industry, electronics are applied on automobile, the motorcycle more and more, be used on automobile, motorcycle show that its inner structure of speedometer of the speed of a motor vehicle and mileage is physical construction or half mechanical structure and use now, showing of the deflection of speed indicator and mileage number shown all and finishes in mechanically operated mode in its table, volume is big, complex structure, and poor reliability, serviceable life is shorter.
The utility model content
The purpose of this utility model provides a kind of speedometer control circuit, makes the speedometer with this control circuit carry out the demonstration of the speed of a motor vehicle and mileage in the mode of LED light emitting diode and LED charactron.
Speedometer control circuit described in the utility model, comprise mileage display circuit, speed of a motor vehicle display circuit and shared voltage-stabilized power supply circuit thereof, the mileage display circuit is made up of single-chip microcomputer IC2, Signal Spacing amplifying circuit, voltage-level detector IC4, eeprom memory IC1 and seven sections LED digital display circuits, wherein the input end of Signal Spacing amplifying circuit is connected with pulse signal input terminal Vin, and output terminal is connected with 8 pin of single-chip microcomputer IC2; 1 pin of voltage-level detector IC4 is connected with stabilized voltage supply, 2 pin ground connection, and 3 pin are connected with 6 pin of single-chip microcomputer IC2; 1,2,5,6,7 pin of eeprom memory IC1 are connected with 9,7,3,2,1 pin of single-chip microcomputer IC2 respectively, and 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 8 pin, 4 pin ground connection, and 7 pin are connected with 8 pin by resistance R 1; Cross-over connection crystal oscillator T between 4,5 pin of single-chip microcomputer IC2, and 4 pin are by capacitor C 1 ground connection, and 5 pin are by capacitor C 2 ground connection, and 20 pin are connected with stabilized voltage supply; Seven sections LED digital display circuits show decoder driver IC3 by binary-coded decimal, 3～8 line code translator I C5 and 6 seven segment digital tubes A1～A6 constitute, binary-coded decimal shows 7 of decoder driver IC3,1,2,6 pin respectively with 19 of single-chip microcomputer IC2,18,17,16 pin connect, 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 4 pin, 8 pin and 5 pin ground connection, 1 of IC5,2,3 pin respectively with 15 of single-chip microcomputer IC2,14,13 pin connect, 4,5,8 pin ground connection, 6,16 pin are connected with stabilized voltage supply, 10,11,12,13,14,15 pin respectively with A1, A2, A3, A4, A5, the public pole of A6 connects, and 6 seven segment digital tubes A1～A6 1,2,3,4,5,6,7 pin show 15 of decoder driver IC3 with binary-coded decimal respectively, 14,13,12,11,17,16 pin connect;
Speed of a motor vehicle display circuit is by the voltage to frequency translation circuit, voltage ratio is formed than driving circuit and LED display circuit, wherein the voltage to frequency translation circuit by 8 pin of operational amplifier IC9 by series connection resistance R 9 and diode D2 and IC9 3,5 pin connect, and 3,5 pin are connected with the negative pole of diode D2, between the negative pole of diode D2 and ground, be parallel with resistance R 11 and capacitor C 5, between 8 pin and ground, also be in series with capacitor C 4 and resistance R 5,9 pin of IC9 and 10 pin are respectively by resistance R 6 and resistance R 5 ground connection, and cross-over connection has the resistance R 4 of connecting between 9 pin and 14 pin, diode D1 and capacitor C 3, and the negative pole of diode D1 is connected with capacitor C 3, resistance R 3 is connected across between resistance R 4 and the diode D1,14 pin of IC9 are by resistance R 10 ground connection, 12 pin are by resistance R 7 ground connection, and be connected with stabilized voltage supply by resistance R 8,11 pin ground connection, 13 pin and pulse signal input terminal Vin are formed by connecting.Voltage ratio than driving circuit by operational amplifier IC10, IC11, IC12, IC13, IC14,3 of IC15,5,10,3 of 12 pin and IC9,5 pin connect, 11 pin ground connection, 4 pin are connected with stabilized voltage supply, after resistance R 12～R38 connected successively, resistance R 12 1 end ground connection, resistance R 38 1 termination stabilized voltage supplys, resistance R 13 is connected across 6 of IC9, between 2 pin, and with resistance R 15, R35, R19, R31, R23, R27 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,2 of IC15, between 13 pin, resistance R 17, R37, R21, R33, R25, R29 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,9 of IC15, form between 6 pin.The LED display circuit is by 1,7 pin of operational amplifier IC9,1,7,8,14 pin that reach IC10, IC11, IC12, IC13, IC14, IC15 are connected with the positive pole of a LED 1-LED26 separately, and the minus earth of LED 1-LED26 forms.
The utility model is owing to adopted the control circuit of said structure, make speedometer with this kind control circuit, the demonstration of its speed of a motor vehicle and mileage is the demonstration that replaces former mechanical drive mode with the luminous demonstration of LED luminescent device, make meter panel eye-catching directly perceived, have graceful innervation and flexible design space for space; Because gauge internal adopts all electronic structure, its volume is little, and is simple in structure, and improved the reliability and the serviceable life of speedometer.
Description of drawings
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is the schematic block circuit diagram of speedometer control circuit described in the utility model;
Fig. 2 is the circuit theory diagrams of speedometer control circuit described in the utility model.
Embodiment
As shown in Figure 1 and Figure 2, this speedometer control circuit comprises mileage display circuit, speed of a motor vehicle display circuit and shared voltage-stabilized power supply circuit thereof, the mileage display circuit is that single-chip microcomputer IC2, Signal Spacing amplifying circuit, the model of AT89C2051 is that the voltage-level detector IC4 of HT7044A, eeprom memory IC1 and seven sections LED digital display circuits that model is X25045P are formed by model, wherein the input end of Signal Spacing amplifying circuit is connected with vehicle speed mileage pulse signal input terminal Vin, and output terminal is connected with 8 pin of single-chip microcomputer IC2; 1 pin of voltage-level detector IC4 is connected with stabilized voltage supply, 2 pin ground connection, and 3 pin are connected with 6 pin of single-chip microcomputer IC2; 1,2,5,6,7 pin of eeprom memory IC1 are connected with 9,7,3,2,1 pin of single-chip microcomputer IC2 respectively, and 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 8 pin, 4 pin ground connection, and 7 pin are connected with 8 pin by resistance R 1; Cross-over connection 12M crystal oscillator T between 4,5 pin of single-chip microcomputer IC2, and 4 pin are by capacitor C 1 ground connection, and 5 pin are by capacitor C 2 ground connection, and 20 pin are connected with stabilized voltage supply; Seven sections LED digital display circuits are the binary-coded decimal demonstration decoder driver IC3 of MC14513B by model, model is that 3～8 line code translator IC5 and 6 seven segment digital tubes A1～A6 of 74LS138 constitute, binary-coded decimal shows 7 of decoder driver IC3,1,2,6 pin respectively with 19 of single-chip microcomputer IC2,18,17,16 pin connect, 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 4 pin, 8 pin and 5 pin ground connection, 1 of IC5,2,3 pin respectively with 15 of single-chip microcomputer IC2,14,13 pin connect, 4,5,8 pin ground connection, 6,16 pin are connected with stabilized voltage supply, 10,11,12,13,14,15 pin respectively with A1, A2, A3, A4, A5, the public pole of A6 connects, and 6 seven segment digital tubes A1～A6 1,2,3,4,5,6,7 pin show 15 of decoder driver IC3 with binary-coded decimal respectively, 14,13,12,11,17,16 pin connect;
Speed of a motor vehicle display circuit is by the voltage to frequency translation circuit, voltage ratio is formed than driving circuit and LED display circuit, wherein the voltage to frequency translation circuit by model be LM324N operational amplifier IC9 8 pin by the series connection resistance R 9 and diode D2 and IC9 3,5 pin connect, and 3,5 pin are connected with the negative pole of diode D2, between the negative pole of diode D2 and ground, be parallel with resistance R 11 and capacitor C 5, between 8 pin and ground, also be in series with capacitor C 4 and resistance R 5,9 pin of IC9 and 10 pin are respectively by resistance R 6 and resistance R 5 ground connection, and cross-over connection has the resistance R 4 of connecting between 9 pin and 14 pin, diode D1 and capacitor C 3, and the negative pole of diode D1 is connected with capacitor C 3, resistance R 3 is connected across between resistance R 4 and the diode D1,14 pin of IC9 are by resistance R 10 ground connection, 12 pin are by resistance R 7 ground connection, and be connected with stabilized voltage supply by resistance R 8,11 pin ground connection, 13 pin and vehicle speed mileage pulse signal input terminal Vin are formed by connecting.Voltage ratio is the operational amplifier IC10 of LM324N by model than driving circuit, IC11, IC12, IC13, IC14,3 of IC15,5,10,3 of 12 pin and IC9,5 pin connect, 11 pin ground connection, 4 pin are connected with stabilized voltage supply, after resistance R 12～R38 connected successively, resistance R 12 1 end ground connection, resistance R 38 1 termination stabilized voltage supplys, resistance R 13 is connected across 6 of IC9, between 2 pin, and with resistance R 15, R35, R19, R31, R23, R27 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,2 of IC15, between 13 pin, resistance R 17, R37, R21, R33, R25, R29 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,9 of IC15, form between 6 pin.The LED display circuit is by 1,7 pin of operational amplifier IC9,1,7,8,14 pin that reach IC10, IC11, IC12, IC13, IC14, IC15 are connected with the positive pole of a LED 1-LED26 separately, and the minus earth of LED 1-LED26 forms.Voltage ratio can be expanded according to instrument needs speed of displaying scope and precision than operational amplifier, light emitting diode and divider resistance in driving circuit and the LED display circuit and be connected.
This control circuit and speedometer dial plate are combined as a whole, and the luminescent device that the LED light emitting diode in the circuit shows as the speed of a motor vehicle, the luminescent device that the LED charactron shows as mileage carry out the speed of a motor vehicle and mileage shows.
Claims (1)
1, speedometer control circuit comprises mileage display circuit, speed of a motor vehicle display circuit and shared voltage-stabilized power supply circuit thereof, it is characterized in that:
The mileage display circuit is made up of single-chip microcomputer IC2, Signal Spacing amplifying circuit, voltage-level detector IC4, eeprom memory IC1 and seven sections LED digital display circuits, wherein the input end of Signal Spacing amplifying circuit is connected with pulse signal input terminal Vin, and output terminal is connected with 8 pin of single-chip microcomputer IC2; 1 pin of voltage-level detector IC4 is connected with stabilized voltage supply, 2 pin ground connection, and 3 pin are connected with 6 pin of single-chip microcomputer IC2; 1,2,5,6,7 pin of eeprom memory IC1 are connected with 9,7,3,2,1 pin of single-chip microcomputer IC2 respectively, and 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 8 pin, 4 pin ground connection, and 7 pin are connected with 8 pin by resistance R 1; Cross-over connection crystal oscillator T between 4,5 pin of single-chip microcomputer IC2, and 4 pin are by capacitor C 1 ground connection, and 5 pin are by capacitor C 2 ground connection, and 20 pin are connected with stabilized voltage supply; Seven sections LED digital display circuits show decoder driver IC3 by binary-coded decimal, 3～8 line code translator IC5 and 6 seven segment digital tubes A1～A6 constitute, binary-coded decimal shows 7 of decoder driver IC3,1,2,6 pin respectively with 19 of single-chip microcomputer IC2,18,17,16 pin connect, 3 pin are connected with 20 pin of single-chip microcomputer IC2 with 4 pin, 8 pin and 5 pin ground connection, 1 of IC5,2,3 pin respectively with 15 of single-chip microcomputer IC2,14,13 pin connect, 4,5,8 pin ground connection, 6,16 pin are connected with stabilized voltage supply, 10,11,12,13,14,15 pin respectively with A1, A2, A3, A4, A5, the public pole of A6 connects, and 6 seven segment digital tubes A1～A6 1,2,3,4,5,6,7 pin show 15 of decoder driver IC3 with binary-coded decimal respectively, 14,13,12,11,17,16 pin connect;
Speed of a motor vehicle display circuit is by the voltage to frequency translation circuit, voltage ratio is formed than driving circuit and LED display circuit, wherein the voltage to frequency translation circuit by 8 pin of operational amplifier IC9 by series connection resistance R 9 and diode D2 and IC9 3,5 pin connect, and 3,5 pin are connected with the negative pole of diode D2, between the negative pole of diode D2 and ground, be parallel with resistance R 11 and capacitor C 5, between 8 pin and ground, also be in series with capacitor C 4 and resistance R 5,9 pin of IC9 and 10 pin are respectively by resistance R 6 and resistance R 5 ground connection, and cross-over connection has the resistance R 4 of connecting between 9 pin and 14 pin, diode D1 and capacitor C 3, and the negative pole of diode D1 is connected with capacitor C 3, resistance R 3 is connected across between resistance R 4 and the diode D1,14 pin of IC9 are by resistance R 10 ground connection, 12 pin are by resistance R 7 ground connection, and be connected with stabilized voltage supply by resistance R 8,11 pin ground connection, 13 pin and pulse signal input terminal Vin are formed by connecting; Voltage ratio than driving circuit by operational amplifier IC10, IC11, IC12, IC13, IC14,3 of IC15,5,10,3 of 12 pin and IC9,5 pin connect, 11 pin ground connection, 4 pin are connected with stabilized voltage supply, after resistance R 12～R38 connected successively, resistance R 12 1 end ground connection, resistance R 38 1 termination stabilized voltage supplys, resistance R 13 is connected across 6 of IC9, between 2 pin, and with resistance R 15, R35, R19, R31, R23, R27 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,2 of IC15, between 13 pin, resistance R 17, R37, R21, R33, R25, R29 is connected across operational amplifier IC10 respectively, IC11, IC12, IC13, IC14,9 of IC15, form between 6 pin; The LED display circuit is by 1,7 pin of operational amplifier IC9,1,7,8,14 pin that reach IC10, IC11, IC12, IC13, IC14, IC15 are connected with the positive pole of a LED 1-LED26 separately, and the minus earth of LED 1-LED26 forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032751 CN2687614Y (en) | 2004-02-05 | 2004-02-05 | Vehicle speed odometer control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032751 CN2687614Y (en) | 2004-02-05 | 2004-02-05 | Vehicle speed odometer control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687614Y true CN2687614Y (en) | 2005-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032751 Expired - Fee Related CN2687614Y (en) | 2004-02-05 | 2004-02-05 | Vehicle speed odometer control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687614Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131330A (en) * | 2011-01-13 | 2011-07-20 | 科蒂斯仪器(中国)有限公司 | Circuit system of LED (light-emitting diode) display module of solid-state vehicle meter |
| CN105628050A (en) * | 2016-03-29 | 2016-06-01 | 安徽中电兴发与鑫龙科技股份有限公司 | Circuit structure of speed odometer |
-
2004
- 2004-02-05 CN CN 200420032751 patent/CN2687614Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131330A (en) * | 2011-01-13 | 2011-07-20 | 科蒂斯仪器(中国)有限公司 | Circuit system of LED (light-emitting diode) display module of solid-state vehicle meter |
| CN102131330B (en) * | 2011-01-13 | 2013-12-18 | 科蒂斯仪器(中国)有限公司 | Circuit system of LED (light-emitting diode) display module of solid-state vehicle meter |
| CN105628050A (en) * | 2016-03-29 | 2016-06-01 | 安徽中电兴发与鑫龙科技股份有限公司 | Circuit structure of speed odometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |