CN2631822Y - Digital instrument panel device of agricultural vehicle - Google Patents

Abstract

A digital instrument for agriculture vehicle includes an instrument display, a crust, a rotary sensor with a measurement engine rotate speed, a sensor for measuring water temperature, and a sensor for measuring the oil pressure, a sensors for measuring oil quantity collects the all mechanical drive signals for the vehicle, and inputs to a U1 circuit of a signal collection treatment SCM, and outputs to a U2 (LCD), a U3, a U4 (LED) and a display circuit after analysis and treatment, at the same time, outputs to a U5 electromagnetism valve drive circuit, and is connected with a U6 proportion electromagnet valve, the U6 is connected with the flameout draw line for the vehicle, the drive voltage is changed, so make extending length of the electromagnet valve shank is changed according to proportion, and change the vehicle speed by controlling the flameout draw line.

Description

Agricultural vehicle digital meter device

Technical field:

The utility model relates to agricultural vehicle digital display technique field, particularly a kind of agricultural vehicle digital meter device.

Background technology:

The agricultural vehicle instrument mostly is the magneto-electric demonstration at present, and electric current is big, and is fragile, and precision is low, and conformability is poor; The instrument that some use the luminous row of LED to show owing to directly adopt integrated circuit LCM3914 acquired signal and the luminous row of driving LED, have equally linear poor precision low, gather inflexible shortcoming; These instrument of forming by analogous circuit of while, necessary supporting corresponding sensor is at different vehicles, when sensor changes, must change the instrument circuit design, again through debugging with carry out process such as failtests again, spended time is long, the expense height, and commonality is poor.

Conventional instrument charges, stops, turns to, headlight, lampet state, uses the 1-3W bulb as display light source, has that power consumption is big, shortcomings such as heating, life-span short (having only hundreds of hours) and fault rate height; The instrument that some adopt LED to show, because directly the display circuit positive pole that uses LED and current-limiting resistance to form the Vehicular charging indicator lamp directly links to each other with electrical generator, negative earth is lighted when generator for electricity generation, extinguishes when not generating electricity, and is opposite with the requirement of standard.

Summary of the invention:

The purpose of this utility model is in order to overcome the above-mentioned deficiency of vehicular meter device, designs a kind ofly to realize that in conjunction with integrated circuit and electronic component LCD liquid crystal and the luminous row of LED accurately show vehicle running state with micro controller system; With LED charge as showing, stop, turn to, the light source of headlight, lampet state; And can carry out the agricultural vehicle digital meter device that light is reported to the police and controlled the speed of a motor vehicle to fault, make the display precision of instrument improve, and work is more stable.

The utility model adopts following technical scheme to realize the foregoing invention purpose:

Described agricultural vehicle digital meter device, instrument indicator gauge and housing are arranged, by the tachogen of measuring engine speed, measure the sensor of water temperature, measure oil pressure sensor, the sensor of measurement oil mass etc. collects each road mechanical drive signal of vehicle, input to signal acquisition process micro controller system U1 circuit, export to U2 (LCD) liquid crystal display drive circuit after handling by analysis, U3, luminous row's driving circuit of U4 (LED) and display circuit, export to the U5 driving circuit for electromagnetic valve simultaneously, link to each other with the U6 proportion magnetic valve again, U6 connects the flame-out backguy of vehicle, because driving voltage changes, the length that the pull bar of electromagnetic valve is stretched out changes in proportion, by controlling the speed that flame-out backguy changes vehicle.

The acquisition of signal control circuit of described agricultural vehicle digital meter device, PORT8 (tachogen of driving engine) links to each other with the T1 of U1 (micro controller system), measures engine speed; PORT5 cooling-water temperature sensor, PORT6 oil pressure sensor, PORT7 fuel-quantity transducer connect the VCC instrument power respectively with after R8 resistance, R7 resistance, R6 resistance are connected, the terminal that sensor links to each other with resistance links to each other with U1 analog quantity input port ADC0, ADC1, ADC2 respectively, utilize voltage divider principle, the resistance of sensor is measured, thereby obtained the working condition of sensor; PORT9 vehicle battery positive pole is through R11 resistance and R12 resistance eutral grounding, and the centre tap of R11 and R12 meets U1 analog quantity input port ADC3, utilizes voltage divider principle, and the voltage of vehicle battery is measured; L5 Vehicular charging indicator lamp and R9 resistance compose in parallel the Vehicular charging indicator light circuit with the R10 high-power resistance again, and the voltage output end of two termination PORT9 and PORT10 electrical generator adopts high-power resistance and light emitting diode display circuit parallel connection.

The U1 signal output control circuit of described agricultural vehicle digital meter device, PC0 with U1, PC1, the PC2 pin meets the WS of U2 LCD driving circuit respectively, DATA, the CS pin, the PC3 of U1, PC4, the PC5 pin connects U3 LED driver module respectively, 1,1 pin of 8 pin and U4 LED driver module, 8 pin of U3 and U4 link to each other, give U2 with the data transmission that micro controller system is handled, U3 and U4, drive luminous row of Liquid Crystal Module U7 LED and the luminous row of U8 LED respectively, show Vehicle Speed and engine speed, the driving engine total hours worked, driving engine single hours worked, coolant water temperature, fuel liquid level, engine oil pressure, various states during vehicles such as voltage travel; And can when having fault, vehicle control the luminous row of the LED warning of glimmering; The PC6 pin of U1 connects the U5 driving circuit for electromagnetic valve, link to each other with the U6 proportion magnetic valve again, U6 connects the flame-out backguy of vehicle, by the different data of PC6 pin output, make the different voltage of U5 output drive U6, because driving voltage changes, the length that the pull bar of electromagnetic valve is stretched out changes in proportion, pull bar links to each other with the flame-out backguy of vehicle, by controlling the speed that flame-out backguy changes vehicle, for example micro controller system detects Vehicle Speed when too fast, makes the flame-out backguy of pull bar pulling of U6 move maximum position to by PC6 foot control system U5 output HIGH voltage, thereby will reduce the speed of a motor vehicle.

The wigwag control circuit of described agricultural vehicle digital meter device, PORT1 Der StandlichtScheinwerfer und Parkleuchtenschalter signal are through R1 resistance, and L1 LED light ground connection is formed headlight status indicator lamp circuit; When Der StandlichtScheinwerfer und Parkleuchtenschalter was closed, L1 was bright; PORT2 lampet on-off signal; PORT3 left steering light switch signal; PORT4 right steering light switch signal; The indicator light circuit that is connect is identical with headlight status indicator lamp circuit.

Owing to adopted technical scheme as mentioned above, the utlity model has following preceence:

The utility model adopts U1 micro controller system acquired signal, after handling by analysis, the PC6 pin connects the U5 driving circuit for electromagnetic valve, link to each other with the U6 proportion magnetic valve again, U6 connects the flame-out backguy of vehicle, by the different data of PC6 pin output, make the different voltage of U5 output drive U6, because driving voltage changes, the length that the pull bar of electromagnetic valve is stretched out changes in proportion, and pull bar links to each other with the flame-out backguy of vehicle, by controlling the speed that flame-out backguy changes vehicle, for example micro controller system detects Vehicle Speed when too fast, makes the flame-out backguy of pull bar pulling of U6 move maximum position to by PC6 foot control system U5 output HIGH voltage, thereby will reduce the speed of a motor vehicle.

The luminous row of LED of the present utility model can accurately represent different vehicle conditions, and when vehicle produced fault, flicker was reported to the police.

Use the micro controller system collection and handle various data, make the display precision of instrument improve, and working stability, at different automobile types, when sensor changes, only, need not to change instrument circuit and just can mate highly versatile the local change of micro controller system in-to-in program.

Use LED to show charge, turn to, headlight, lampet state, solved the Vehicular charging indicator lamp, use bulb or simply use the LED display circuit opposite problem of logical AND standard of glimmering.

Description of drawings:

Fig. 1 is agricultural vehicle digital meter device acquisition of signal and treatment circuit schematic diagram:

Specific embodiment:

PORT8 (tachogen of driving engine) links to each other with the T1 of U1 (micro controller system), measures engine speed; PORT5 (cooling-water temperature sensor), PORT6 (oil pressure sensor), PORT7 (fuel-quantity transducer) meet VCC (instrument power) respectively with after R8 resistance, R7 resistance, R6 resistance are connected, the terminal that sensor links to each other with resistance links to each other with U1 analog quantity input port ADC0, ADC1, ADC2 respectively, utilize voltage divider principle, the resistance of sensor is measured, thereby obtained the working condition of sensor; PORT9 (vehicle battery positive pole) is through R11 resistance and R12 resistance eutral grounding, and the centre tap of R11 and R12 meets U1 analog quantity input port ADC3, utilizes voltage divider principle, and the voltage of vehicle battery is measured; L5 (Vehicular charging indicator lamp) and R9 resistance compose in parallel the voltage output end of Vehicular charging indicator light circuit two termination PORT9 and PORT10 electrical generator again with the R10 high-power resistance, adopt high-power resistance and light emitting diode display circuit parallel connection, solved the Vehicular charging indicator lamp, used bulb or simply use the opposite problem of LED display circuit flicker logical AND standard.

PC0 with U1, PC1, the PC2 pin meets the WS of U2 (LCD driving circuit) respectively, DATA, the CS pin, the PC3 of U1, PC4, the PC5 pin meets U3 (LED driver module) 1 respectively, 1 pin of 8 pin and U4 (LED driver module), 8 pin of U3 and U4 link to each other, give U2 with the data transmission that micro controller system is handled, U3 and U4, drive Liquid Crystal Module respectively, U7 (the luminous row of LED) and U8 (the luminous row of LED) show Vehicle Speed and engine speed, the driving engine total hours worked, driving engine single hours worked, coolant water temperature, fuel liquid level, engine oil pressure, various states during vehicles such as voltage travel, and can when vehicle has fault, control the luminous row of the LED warning of glimmering.The PC6 pin of U1 meets U5 (driving circuit for electromagnetic valve) and links to each other with U6 (proportion magnetic valve), U6 connects the flame-out backguy of vehicle, by the different data of PC6 pin output, make the different voltage of U5 output drive U6, because driving voltage changes, the length that the pull bar of electromagnetic valve is stretched out changes in proportion, pull bar links to each other with the flame-out backguy of vehicle, by controlling the speed that flame-out backguy changes vehicle, for example micro controller system detects Vehicle Speed when too fast, make the flame-out backguy of pull bar pulling of U6 move maximum position to by PC6 foot control system U5 output HIGH voltage, thereby will reduce the speed of a motor vehicle.

PORT1 (Der StandlichtScheinwerfer und Parkleuchtenschalter signal) forms headlight status indicator lamp circuit through R1 resistance, L1 (LED light) ground connection, and when Der StandlichtScheinwerfer und Parkleuchtenschalter was closed, L1 was bright; The indicator light circuit that PORT2 (lampet on-off signal), PORT3 (left steering light switch signal), PORT4 (right steering light switch signal) are connect is identical with headlight status indicator lamp circuit.

Claims (4)

1, a kind of agricultural vehicle digital meter device, have instrument indicator gauge and housing, it is characterized in that: described digital meter device is by the tachogen of measuring engine speed, measure the sensor of water temperature, measure oil pressure sensor, the sensor of measurement oil mass etc. collects each road mechanical drive signal of vehicle, input to signal acquisition process micro controller system U1 circuit, export to U2 (LCD) liquid crystal display drive circuit after handling by analysis, U3, luminous row's driving circuit of U4 (LED) and display circuit, export to the U5 driving circuit for electromagnetic valve simultaneously, link to each other with the U6 proportion magnetic valve, U6 connects the flame-out backguy of vehicle again.

2, agricultural vehicle digital meter device as claimed in claim 1 is characterized in that: the acquisition of signal control circuit of described digital meter device, and PORT8 (tachogen of driving engine) links to each other with the T1 of U1 (micro controller system), measures engine speed; PORT5 cooling-water temperature sensor, PORT6 oil pressure sensor, PORT7 fuel-quantity transducer connect the VCC instrument power respectively with after R8 resistance, R7 resistance, R6 resistance are connected, and the terminal that sensor links to each other with resistance links to each other with U1 analog quantity input port ADC0, ADC1, ADC2 respectively; PORT9 vehicle battery positive pole is through R11 resistance and R12 resistance eutral grounding, and the centre tap of R11 and R12 meets U1 analog quantity input port ADC3; L5 Vehicular charging indicator lamp and R9 resistance compose in parallel the Vehicular charging indicator light circuit with the R10 high-power resistance again, and the voltage output end of two termination PORT9 and PORT10 electrical generator adopts high-power resistance and light emitting diode display circuit parallel connection.

3, agricultural vehicle digital meter device as claimed in claim 1, it is characterized in that: the U1 signal output control circuit of described digital meter device, with PC0, the PC1 of U1, WS, DATA, the CS pin that the PC2 pin connects U2 LCD driving circuit respectively, the PC3 of U1, PC4, PC5 pin connect U3 LED driver module respectively, 1,1 pin of 8 pin and U4 LED driver module, 8 pin of U3 and U4 link to each other, give U2, U3 and U4 with the data transmission that micro controller system is handled, drive luminous row of Liquid Crystal Module U7 LED and the luminous row of U8 LED respectively; Can when having fault, vehicle control the luminous row of the LED warning of glimmering; The PC6 pin of U1 connects the U5 driving circuit for electromagnetic valve, links to each other with the U6 proportion magnetic valve again, and U6 connects the flame-out backguy of vehicle, by the different data of PC6 pin output, makes the different voltage of U5 output drive U6.

4, as the described agricultural vehicle digital meter of claim 1 device, it is characterized in that: the wigwag control circuit of described digital meter device, PORT1 Der StandlichtScheinwerfer und Parkleuchtenschalter signal are through R1 resistance, and L1 LED light ground connection is formed headlight status indicator lamp circuit; When Der StandlichtScheinwerfer und Parkleuchtenschalter was closed, L1 was bright; PORT2 lampet on-off signal; PORT3 left steering light switch signal; PORT4 right steering light switch signal; The indicator light circuit that is connect is identical with headlight status indicator lamp circuit.