CN1267297C - Assembled instrument step motor controller of vehicle and control mode thereof - Google Patents
Assembled instrument step motor controller of vehicle and control mode thereof Download PDFInfo
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- CN1267297C CN1267297C CN 03132333 CN03132333A CN1267297C CN 1267297 C CN1267297 C CN 1267297C CN 03132333 CN03132333 CN 03132333 CN 03132333 A CN03132333 A CN 03132333A CN 1267297 C CN1267297 C CN 1267297C
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 6
- 239000010705 motor oil Substances 0.000 claims abstract description 5
- -1 voltage Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 18
- 239000000295 fuel oil Substances 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
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Abstract
The present invention relates to a combined instrument controller for step motors of a vehicle and a control method of the controller. The controller is a combined instrument that indicates the working states of a vehicle by using the microcontroller for collecting and treating signals and directly controlling the step motors. The controller is suitable for trucks, passenger vehicles, cars, motor vehicles and the like in structure and is technically suitable for various vehicle models. The controller comprises a controller housing, wherein the controller housing is provided with a panel, and a printed circuit board, an electronic circuit and electronic components are arranged in the controller housing. The controller is characterized in that the electronic circuit comprises a main control chip (IC) 1, a main control chip IC2, a memorizer IC3, a plurality of step motors, a buzzer, a plurality of LED alarm lamps, a liquid crystal display (LCD) and an asynchronous serial bus UART. The main control chip IC1 and the main control chip IC2 are respectively connected with a plurality of signal wires for collecting analogue signals, digital signals and switching value signals. The analog signals comprise water temperature, fuel, voltage, engine oil pressure and atmospheric pressure, the digital signals comprise speed and the rotary speed of an engine, and the switching value signals comprise a high beam, a low beam, an exhaust brake, etc.
Description
Technical field
Automobile combination meter controllor for step-by-step motor of the present invention and mode thereof are that a kind of microcontroller that uses carries out the combination instrument that signal acquisition process and direct control stepping motor are indicated the automobile mode of operation, its structure is applicable to truck, passenger vehicle, car, self-propelled vehicle etc., is applicable to various vehicles technically.
Background technology
The domestic automobile instrument mainly is to adopt traditional mechanical structure at present, then mainly adopts the cross coil to drive pointer indication automobile mode of operation in a little electrons instrument.Traditional mechanical structure instrument exists cost height, unstable properties, complex structure, weak point such as attractive in appearance inadequately; And at present domestic part adopts the electronic instrument of cross coil mode, then exist pointing accuracy not high, easily produce accumulated error, weak points such as damage easily.
Summary of the invention
The objective of the invention is provides a kind of automobile combination meter controllor for step-by-step motor and mode thereof at above-mentioned weak point, adopt two microprocessors as core, gather the speed of running car, driving engine voltage, water temperature, fuel oil, machine oil is pressed, air pressure signal, after microprocessor processes, export, cancelled the method that traditional machinery and cross coil mode drive the pointer operation, adopt several stepping motors to indicate above-mentioned signal condition to reflect automobile operating state, can reach pointer operates steadily, indication accurately, do not produce accumulated error, and independent operating separately, can not produce and influence each other.
Automobile combination meter controllor for step-by-step motor and mode thereof take following scheme to realize: automobile combination meter controllor for step-by-step motor structure has controller housing, controller housing is provided with panel, and device has printed circuit board, electronic circuit, electronic devices and components in the controller housing.
Electronic circuit comprises two main control chips (microprocessor) MCU IC1, IC2, memory IC 3, several stepping motors, buzzer phone, several light-emitting diode alarm lamps LED, Liquid Crystal Display (LCD) LCD, asynchronous serial bus UART.Two main control chips are the first main control chip IC1, the second main control chip IC2.The first main control chip IC1 links to each other with memory IC 3 by string line, the first main control chip IC1, the second main control chip IC2 link to each other with a plurality of stepping motor P by signal wire (SW) respectively, the first main control chip IC1 links to each other with LCDs LCD, light-emitting diode alarm lamp LED, buzzer phone EF by signal wire (SW) respectively, the second main control chip IC2 links to each other with light-emitting diode alarm lamp LED, buzzer phone EF by signal wire (SW) respectively, the first main control chip IC1, the second main control chip IC2 are connected with some signal wire (SW)s respectively, gather analog signal, digital signal, switching value signal.Analog signal comprises water temperature, fuel oil, voltage, engine oil pressure, air pressure, and digital signal comprises speed, engine speed, and the switching value signal comprises country beam, passing light, parking lamp, shaft space difference speed, energy brake.
The control method of automobile combination meter controllor for step-by-step motor: the first main control chip IC1 calculates the mileage and the speed of vehicle operating by signal wire (SW) with the running velocity signal of gathering, and mileage accumulation is kept in the memory IC 3, pass through liquid crystal display displays simultaneously, and calculate the pulse-width signal of required output, the stepping motor of while start-up control speed indicator, indicate current velocity amplitude, when detecting the speed of a motor vehicle and reach alarming value, connect buzzer phone and carry out auditory tone cues.
Main control chip with the engine rotational speed signal calculation engine rotating speed that collects, and calculates the pulse-width signal of required output by signal wire (SW), and the stepping motor of start the engine rotating speed pointer, indicates the rotating speed of present engine.
The first main control chip IC1 goes out water temperature, the fuel oil calculated signals that collects current water temperature, amount of fuel and calculates the pulse-width signal of required output by signal wire (SW), and the stepping motor of start-up control water temperature pointer, indicate current water temperature, amount of fuel, when water temperature, when amount of fuel reaches limit value, start buzzer phone and carry out audible alarm, and start light-emitting diode alarm lamp warning indication.
The second main control chip IC2 by signal wire (SW) with the voltage that collects, oil level, front and back brake pressure A, air pressure B calculated signals goes out current voltage, oil level, front and back brake pressure A, air pressure B also calculates the pulse-width signal of required output, and start-up control voltage, oil level, front and back brake pressure A, the stepping motor of air pressure B pointer, indicate current voltage, oil level, front and back brake pressure A, air pressure B, work as voltage, oil level, front and back brake pressure A, when air pressure B reaches limit value, start buzzer phone and carry out audible alarm, and start light-emitting diode alarm lamp warning indication.
Automobile combination meter controllor for step-by-step motor and mode thereof adopt the pulse-width modulation PWM technology, its principle is: change duty of ratio under cycle unmodified condition, promptly change the time of positive level in whole pulse, utilize differential and integral calculus principle between the voltage and current, under voltage unmodified situation, change the time that level is kept, can change the size of immediate current, thereby the electric current that produces different sizes in the coil of stepping motor comes the operation of drive stepping motor and drives pointer to rotate.When driving a plurality of stepping motor, adopt the co-operative control technology to reach in service unaffected mutually.It is characterized in that adopting the PWM technology can in very large range change dutycycle, the electric current on the motor coil can be sub-divided into very little variation, thereby can accurately change the indicating positions of stepping motor.Use two microprocessors (MCU) upd78F0828B as core, gather speed, engine speed, voltage, water temperature, fuel oil, engine oil pressure, the air pressure signal of automobile, after treatment output.And cancelled the method for the moving pointer operation of traditional mechanical type and cross line astragal, and adopt 8 stepping motors to indicate above-mentioned signal condition to reflect automobile operating state, adopt liquid crystal digital demonstration mileage, total kilometrage and time simultaneously.Use PWM (pulse width modulation pulse duration modulation) technology drive stepping motor in the invention, can reach pointer and operate steadily, indicate accurately, do not produce accumulated error; Adopt the co-operative control technology to control 8 stepping motors (every MCU drive 4) simultaneously simultaneously, and independent operating separately, can not produce and influence each other.
Description of drawings
The invention will be further described below with reference to accompanying drawing.
Fig. 1 is an automobile combination meter controllor for step-by-step motor scheme drawing.
Fig. 2 is automobile combination meter controllor for step-by-step motor and mode schematic circuit diagram thereof.
Fig. 3 is an automobile combination meter controllor for step-by-step motor mode main program flow chart.
Fig. 4 is an automobile combination meter controllor for step-by-step motor mode interrupt routine diagram of circuit.
The specific embodiment
With reference to accompanying drawing 1,2, automobile combination meter controllor for step-by-step motor structure has controller housing 1, controller housing is provided with panel 2, and volt meter 3, water thermometer 4, air-pressure gauge A5, air-pressure gauge B6, oil pressure gauge 7, fuel gage 8, speed gage 9, speed meter 10, warning indicator lamp 11 are housed on the panel 2.Volt meter 3, water thermometer 4, air-pressure gauge A5, air-pressure gauge B6, oil pressure gauge 7, fuel gage 8, speed gage 9, speed meter 10 pointers are driven by 8 stepping motor P1～P8 respectively.
Device has printed circuit board, electronic circuit, electronic devices and components in the controller housing.Electronic circuit comprises that electronic circuit comprises the first main control chip IC1, the second main control chip IC2, memory IC 3, several stepping motors, buzzer phone, several (light-emitting diodes) LED alarm lamp, Liquid Crystal Display (LCD) LCD, asynchronous serial bus UART.The first main control chip IC1 links to each other with memory IC 3 by string line, the first main control chip IC1, the second main control chip IC2 link to each other with a plurality of stepping motor P by signal wire (SW) respectively, the first main control chip IC1 links to each other with LCDs LCD, light-emitting diode alarm lamp LED, buzzer phone EF by signal wire (SW) respectively, the second main control chip IC2 links to each other with light-emitting diode alarm lamp LED, buzzer phone EF by signal wire (SW) respectively, the first main control chip IC1, the second main control chip IC2 are connected with some signal wire (SW)s respectively, gather analog signal, digital signal, switching value signal.Analog signal comprises water temperature, fuel oil, voltage, engine oil pressure, air pressure, and digital signal comprises speed, engine speed, and the switching value signal comprises country beam, passing light, parking lamp, shaft space difference speed, energy brake etc.
The first main control chip IC1, the second main control chip IC2 adopt upd78F0828B, and memory IC 3 adopts 93C66, and stepping motor P1～P8 adopts SWITECX15.589.
With reference to accompanying drawing 2,3,4, the control method of automobile combination meter controllor for step-by-step motor: the first main control chip IC1 is by mileage and the speed of signal wire (SW) with the running velocity calculated signals vehicle operating of collection, and mileage accumulation is kept in the memory IC 3, show by LCD simultaneously, and calculate the pulse-width modulation PWM signal of required output, the stepping motor of while start-up control speed indicator, indicate current velocity amplitude, when detecting the speed of a motor vehicle and reach alarming value, connect buzzer phone and carry out auditory tone cues.
Main control chip with the engine rotational speed signal calculation engine rotating speed that collects, and calculates the pulse-width modulation PWM signal of required output by signal wire (SW), and the stepping motor of start the engine rotating speed pointer, indicates the rotating speed of present engine.
The first main control chip IC1 goes out water temperature, the fuel oil calculated signals that collects current water temperature, amount of fuel and calculates the pulse-width modulation PWM signal of required output by signal wire (SW), and the stepping motor of start-up control water temperature pointer, indicate current water temperature, amount of fuel, when water temperature, when amount of fuel reaches limit value, start buzzer phone and carry out audible alarm, and start LED diode warning indication.
The second main control chip IC2 by signal wire (SW) with the voltage that collects, oil level, front and back brake pressure A, the air pressure a-signal calculates current voltage, oil level, front and back brake pressure A, air pressure B also calculates the pulse-width modulation PWM signal of required output, and start-up control voltage, oil level, front and back brake pressure A, the stepping motor of air pressure B pointer, indicate current voltage, oil level, front and back brake pressure A, air pressure B, work as voltage, oil level, front and back brake pressure A, when air pressure B reaches limit value, start buzzer phone and carry out audible alarm, and start LED diode warning indication.
The first main control chip IC1, the second main control chip IC2 by signal wire (SW) with the switching value signal that collects, for example gear, steering indicating light signal, the corresponding indicator lamp of switch.
Claims (6)
1, a kind of automobile combination meter controllor for step-by-step motor, has controller housing, controller housing is provided with panel, be provided with printed circuit board, electronic circuit, electronic devices and components in the controller housing, it is characterized in that controller comprises first main control chip (IC1), second main control chip (IC2), memory device (IC3), several stepping motors, buzzer phone, several light-emitting diode alarm lamps, Liquid Crystal Display (LCD), asynchronous serial bus; First main control chip (IC1) links to each other with memory device (IC3) by string line, first main control chip (IC1), second main control chip (IC2) links to each other with a plurality of stepping motors (P) by signal wire (SW) respectively, first main control chip (IC1) is respectively by signal wire (SW) and LCDs, the light-emitting diode alarm lamp, buzzer phone links to each other, second main control chip (IC2) is respectively by signal wire (SW) and light-emitting diode alarm lamp, buzzer phone links to each other, first main control chip (IC1), second main control chip (IC2) is connected with some signal wire (SW)s respectively, gathers analog signal, digital signal, the switching value signal.
2, automobile combination meter controllor for step-by-step motor according to claim 1 is characterized in that analog signal comprises water temperature, fuel oil, voltage, engine oil pressure, air pressure.
3, automobile combination meter controllor for step-by-step motor according to claim 1, it is characterized in that digital signal comprises speed, engine speed, the switching value signal comprises the signal of indication country beam, passing light, parking lamp, shaft space difference speed, exhaust brake condition.
4, automobile combination meter controllor for step-by-step motor according to claim 1, it is characterized in that controller panel is provided with volt meter, water thermometer, air-pressure gauge A, air-pressure gauge B, oil pressure gauge, fuel gage, speed gage, speed meter, list index is respectively by step motor drive.
5, a kind of control method of automobile combination meter controllor for step-by-step motor, it is characterized in that first main control chip (IC1) is by mileage and the speed of signal wire (SW) according to the running velocity calculated signals vehicle operating that collects, and mileage accumulation is kept in the memory device (IC3), show by LCDs simultaneously, and calculate the pulse-width signal of required output, the stepping motor of while start-up control speed indicator, indicate current velocity amplitude, when detecting the speed of a motor vehicle and reach alarming value, connect buzzer phone and carry out auditory tone cues;
Main control chip according to the engine rotational speed signal calculation engine rotating speed that collects, and calculates the pulse-width signal of required output by signal wire (SW), and the stepping motor of start the engine rotating speed pointer, indicates the rotating speed of present engine;
First main control chip (IC1) goes out current water temperature, amount of fuel by signal wire (SW) according to the water temperature, the fuel oil calculated signals that collect, and calculate the pulse-width signal of required output, and the stepping motor of start-up control water temperature pointer, indicate current water temperature, amount of fuel, when water temperature, when amount of fuel reaches limit value, start buzzer phone and carry out audible alarm, and start light-emitting diode alarm lamp warning indication;
The voltage that second main control chip (IC2) collects by the signal wire (SW) basis, oil level, front and back brake pressure A, air pressure B calculated signals goes out current voltage, oil level, front and back brake pressure A, air pressure B, and calculate the pulse-width signal of required output, and start-up control voltage, oil level, front and back brake pressure A, the stepping motor of air pressure B pointer, indicate current voltage, oil level, front and back brake pressure A, air pressure B, work as voltage, oil level, front and back brake pressure A, when air pressure B reaches limit value, start buzzer phone and carry out audible alarm, and start light-emitting diode alarm lamp warning indication.
6, the control method of automobile combination meter controllor for step-by-step motor according to claim 5 is characterized in that the switching value signal that first main control chip (IC1), second main control chip (IC2) collect by the signal wire (SW) basis, the corresponding indicator lamp of switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132333 CN1267297C (en) | 2003-08-15 | 2003-08-15 | Assembled instrument step motor controller of vehicle and control mode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132333 CN1267297C (en) | 2003-08-15 | 2003-08-15 | Assembled instrument step motor controller of vehicle and control mode thereof |
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| CN1490191A CN1490191A (en) | 2004-04-21 |
| CN1267297C true CN1267297C (en) | 2006-08-02 |
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| CN 03132333 Expired - Fee Related CN1267297C (en) | 2003-08-15 | 2003-08-15 | Assembled instrument step motor controller of vehicle and control mode thereof |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290241B (en) * | 2007-04-19 | 2011-02-02 | 上海德科电子仪表有限公司 | Abnormal instance fuel meter signal processing method |
| CN101308034B (en) * | 2007-05-18 | 2011-08-31 | 德国Fev发动机技术有限公司 | Automobile display instrument |
| CN101949713B (en) * | 2009-07-10 | 2012-05-23 | 青岛东田汽车电子科技有限公司 | Diagnostic automobile combined instrument, instrument diagnostor and instrument diagnosing method |
| SE535210C2 (en) * | 2010-10-07 | 2012-05-22 | Scania Cv Ab | Method and system for determining the operating condition of a motor vehicle |
| CN103231657A (en) * | 2013-05-14 | 2013-08-07 | 山东天海科技股份有限公司 | Intelligent multifunctional electric automobile instrument panel |
| CN104868877B (en) * | 2014-08-13 | 2017-11-24 | 北京车和家信息技术有限责任公司 | The driving method and system of digital instrument stepper motor |
| CN107834916A (en) * | 2017-11-22 | 2018-03-23 | 魏海峰 | A kind of inexpensive velocity indicating device of brshless DC motor |
| CN107769632A (en) * | 2017-11-22 | 2018-03-06 | 魏海峰 | A kind of brushless dc tachometer |
| CN107907704B (en) * | 2017-12-14 | 2024-02-02 | 杭州百隆电子有限公司 | Rotation speed measurement driving circuit and method |
| CN108248386B (en) * | 2018-01-31 | 2023-08-29 | 浙江杭派电动科技股份有限公司 | Electric vehicle instrument device with acceleration indication |
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| CN1490191A (en) | 2004-04-21 |
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Granted publication date: 20060802 Termination date: 20130815 |