CN201170852Y - Control system for loader instrument base on CAN bus technology - Google Patents
Control system for loader instrument base on CAN bus technology Download PDFInfo
- Publication number
- CN201170852Y CN201170852Y CNU2008200837463U CN200820083746U CN201170852Y CN 201170852 Y CN201170852 Y CN 201170852Y CN U2008200837463 U CNU2008200837463 U CN U2008200837463U CN 200820083746 U CN200820083746 U CN 200820083746U CN 201170852 Y CN201170852 Y CN 201170852Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- microprocessor
- power supply
- input
- 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
Images
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a loader meter control system based on the CAN bus technology, which comprises a power supply circuit, a signal input circuit, a master control circuit, an alarm indicator light drive circuit, a control signal output circuit, a meter-illuminating circuit and other peripheral circuits; wherein, the master control circuit adopts a microprocessor and a memory to form a control unit; after the signal input circuit inputs the acquired signal into the microprocessor, the signal is processed by the software in the microprocessor to drive the alarm indicator light drive circuit, and the control signal output amplification circuit outputs control signals for other systems. The loader meter control system has the following advantages: a unified step motor structure form is adopted, the microprocessor conducts centralized control, the operation precision is high, the functionality is strong, the reliability is high, and the system cost is low; the loader meter control system can be communicated with the CAN bus of the whole machine as well as the RS232 serial port of an automatic gearbox; an alarm system is intelligentized; LED illumination is adopted, the illuminating ray can meet the ideal requirement, and power consumption is low; the system adopts double power supplies to provide electricity.
Description
Technical field
The utility model relates to a kind of engineering machinery articles for use, particularly a kind of shovel loader instrument based on the CAN bussing technique (hereinafter to be referred as the shovel loader instrument) control system.
Background technology
Along with the high speed development of modern project machinery and making rapid progress of scientific and technological level, the electronization of engineering machinery has obtained development rapidly.Technology such as emergent steering, power arm shock mitigation system, electronic fuel injection engine, automatic gear-box, CAN bus communication system use in a large number and relevant monitored item purpose constantly increases, the electronization control of engineering machinery, demonstration are attracted attention by industry, the shovel loader blind controller system is a workbench of engineering machinery meter electronicsization, the research and development of this platform are with the technological change of propel work machine instrument greatly, it has shown the development trend of engineering machinery instrument new technology, and abundant realization engineering machinery electronicsization and technical progress are had great importance and act on.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of can realize the low energy consumption of CAN bus communication, the shovel loader meter electronics control system of high reliability with complete machine.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of shovel loader blind controller system based on the CAN bussing technique, comprise power circuit, signal input circuit, governor circuit, alarm lamp driving circuit, control signal output circuit, described governor circuit adopts microprocessor and storer as control module; After signal input circuit is input to microprocessor with the signal that collects, the software processes rear drive alarm lamp driving circuit in microprocessor, control signal output circuit.
The power supply of described shovel loader blind controller system is provided by battery feed and key power supply, battery feed and key power supply composition " or " logical relation, system provides power supply by accumulator during shutdown, and the start back is powered simultaneously by accumulator and key power supply, the reliability of increase system power supply.
Described power circuit is by reverse protection circuit one; reverse protection circuit two; surge absorbing circuit; filtering circuit one; filtering circuit two; low-power consumption 5V D.C. regulated power supply; the 5V switching power supply of belt switch function; the key power sense circuit is formed; the input power supply is through reverse protection circuit one; carry out filtering to filtering circuit one behind the surge absorbing circuit; thereafter respectively by the 5V D.C. regulated power supply; with the 5V switching power supply system is powered; described key power supply passes through reverse protection circuit two successively; filtering circuit two provides the power supply of microprocessor test side to make starting-up signal and uses behind the key power sense circuit.
Described signal input circuit comprises digital signal samples circuit, simulating signal sample circuit, CAN interface circuit and switching signal sample circuit;
Described digital signal samples circuit comprises vehicle speed signal sample circuit and automatic gear-box signal sample circuit, through software processes, show and input corresponding vehicle speed value, wheel box gear value and wheel box failure code behind the RS232 data sampling of vehicle speed signal and automatic gear-box output by the microprocessor driven LCD display;
Described simulating signal sample circuit comprises fuel quantity signal sample circuit and torque converter oil temperature signal sample circuit, behind the signal sampling through software processes, drive pointer by microprocessor driven stepper motor gauge outfit, indication and corresponding fuel quantity value of input and torque converter oil temperature on index dial;
Described CAN interface circuit and CAN bus are carried out communication, and the CAN data that receive are translated into serial data are connected with microprocessor by the TXD/RXD mouth.The CAN data comprise engine rotational speed signal, engine water temperature signal, engine consumption signal, system voltage signal, system's air pressure signal, ambient temperature signal, engine failure code, after the data acquisition through software processes, drive pointer by microprocessor driven stepper motor gauge outfit, indication and corresponding engine speed value of input and engine water temperature value on index dial; Show and contents such as the corresponding engine consumption value of input, system voltage value, system's atmospheric pressure value, ambient temperature value, engine accumulative total working time and engine failure code by the microprocessor driven LCD display, when comprising " engine motor oil pressure is low " in the failure code that shows, open corresponding LED alarm lamp simultaneously;
Described switching signal sample circuit comprises that No. 14 grounding switch signal sample circuits and 7 tunnel connect the power signal sampling circuit, are respectively: the lubricating system fault, the steering fault, air cleaner stops up, gear box oil forces down, the drive axle low oil pressure, the hydraulic oil temperature height, the pollution degree of hydraulic oil height, parking braking, service brake, headlight leaves, the right turn lamp is opened, the left steering lamp is opened, the lubricating system operation, emergent steering operation, power cut, charged state, service mode, stopped status, starting state, wait for starting state, warning waits the AIS sample circuit; Input signal is become the high-low level signal of 0V or 5V by sample circuit by switch state, the signal that samples converts input microprocessor behind the serial code to by input and port expansion circuit, pass through output and port expansion circuit and alarm lamp driving circuit through software processes by microprocessor after the data acquisition and drive and import the corresponding LED alarm lamp, and whether decision opens indicating fault and external alert hummer according to alarm level.
The working current of the every road warning indication LED circuit for lamp that is driven by described alarm lamp driving circuit is 10-15mA.The LED lamp as the traditional wedge shape incandescent lamp bulb that uses in report to the police indication and the shovel loader compare have bright-colored, luminosity is high, low in energy consumption, advantages such as heating is little, the life-span is grown.
Described control signal output circuit comprises emergent steering output power amplifying circuit, power arm shock mitigation system output power amplifying circuit and outside hummer output power amplifying circuit, every road output power amplifying circuit all is made up of preamplifying circuit and power amplification circuit, emergent steering output power amplifying circuit maximum current is 12A, and the maximum current of power arm shock mitigation system output power amplifying circuit, outside hummer output power amplifying circuit is 3A.
Comprise the dial illumination circuit, described dial illumination circuit comprises the White LED lighting circuit of three tunnel parallel connections, and every paths of LEDs working current 10-15mA mainly carries out back lighting to index dial, the LCD display of instrument, and gauge pointer is carried out the leaded light illumination.White led lamps as the traditional wedge shape incandescent lamp bulb that uses in dial illumination light source and the shovel loader compare have even, the white purity height of light, luminosity height, low in energy consumption, advantages such as heating is little, the life-span is long.
Comprise and joining other peripheral circuit of microprocessor that described other peripheral circuit comprises stepper motor gauge outfit, LCD display, system debug interface circuit.
With the stepper motor of microprocessor control as the gauge outfit that drives pointer, owing to adopted between digital signal PWM micro-stepping driving and needle pivot and armature spindle 120 times big speed ratio braking technique, the advantage such as have the pointing accuracy height, linear height, ambient temperature effect are little of comparing with the traditional cross coil moving-magnetic type gauge outfit used in the shovel loader and bimetallic strip electrothermal gauge outfit.
Show some system state and running parameters stably with LCD display, have low in energy consumption, display precision is high, it is little to take up room, easily debate and advantage such as read.
The system debug interface circuit is one 16 pin plug, mainly is made up of power lead, ground wire, serial port data line, clock cable, CAN data line, debugging mode selection wire and instrument simulating signal incoming line etc.After commissioning device is connected, can make online programming to debugged system.
The utility model is based on the advantage of the shovel loader blind controller system of CAN bussing technique: 1, system with all simulating signals of coming self-controller and sensor after digitized sampling by the microprocessor centralized control, by measured parameter and vehicle condition information category different respectively with the LCD numeral show, the forms of pointer driven by stepper motors indication and sound and light alarm indication export.The indication mechanism that digital technology drives has the operating accuracy height, function and highly versatile, reliability height, advantage such as system cost is low.Major parameters such as engine speed, engine water temperature, torque converter oil temperature, fuel quantity adopt pointer indication and some important AISs of the scale of band color lump form to adopt the sound and light alarm indication can make interpretation simple and clear, more meet traditional habit; Contents such as the speed of a motor vehicle, system voltage, system's air pressure, environment temperature, engine consumption, engine accumulative total working time, fluid drive gear box value, failure code adopt the LCD numeral to show, make displaying contents fast, accurately, and help the expansion of displaying contents.2, given full play to the superiority that microprocessor is introduced control system,, realized self-checking function behind the system boot, and can write down and show that the complete machine failure code helps maintenance and keeps in repair the warning system intellectuality.System can be automatically with the signal that receives by the danger classes classification display.3, the illumination of control system, indication alarm lamp all adopt LED.LED has the advantage that power consumption is little, the life-span is long, thereby has significantly reduced the thermal value of instrument self, has improved the reliability of system.4, blind controller system can carry out communication by CAN bus and other control system, and the control signals such as steering unlatching, outside hummer unlatching of opening, meet an urgent need to complete machine outputting power arm shock mitigation system, has satisfied the requirement of shovel loader electronization.The travelling speed of each pointer of instrument can onlinely be provided with when 5, debugging, the parameter single-point is adjustable.In pointer when work, realized electronic damping by software, and when particularly fuel gage can be increased to stationary state with the pointer damping automatically when driving 4 times are used for overcoming fuel tank liquid level and rock the indication that causes and fluctuate, improved its stable working.6, system adopts dual power supply (battery feed and key switch power supply), and when key switch kills engine when quitting work, system is in holding state, and electric current＜5mA always works.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is that the utility model is formed theory diagram based on the hardware of the shovel loader blind controller system of CAN bussing technique;
Fig. 2 is the circuit diagram of the utility model based on the shovel loader blind controller system of CAN bussing technique.
Because page relation, Fig. 2 resolves into Fig. 2-1, Fig. 2-2, Fig. 2-3, Fig. 2-4, Fig. 2-5 five part.
Embodiment
The utility model is for a general-purpose platform of shovel loader instrument exploitation based on the shovel loader blind controller system of CAN bussing technique, mainly is made up of hardware circuit and Car20C2a Control Software.
Please consult Fig. 1 and Fig. 2 simultaneously, hardware circuit mainly is made of power circuit 10, signal input circuit 20, port expansion circuit, governor circuit 40, alarm lamp driving circuit 50, control signal output circuit 60, dial illumination circuit 70 and other peripheral circuit.
One, power circuit 10
System power supply is provided by battery positive voltage and key positive source, battery feed and key power supply composition " or " logical relation, system provides power supply by accumulator during shutdown, and the start back is powered simultaneously by accumulator and key power supply.Power circuit 10 is by reverse protection circuit 102,112, surge absorbing circuit 104, and filtering circuit 106,114, the 5V switching power supply 110 of low-power consumption 5V D.C. regulated power supply 108, belt switch function, key power sense circuit 116 etc. are partly formed.The input power supply carries out filtering through reverse protection circuit 102, surge absorbing circuit 104 back to filtering circuits 106, powers by 5V D.C. regulated power supply 108 and 110 pairs of systems of 5V switching power supply respectively thereafter.The key power supply passes through reverse protection circuit 112, filtering circuit 114 successively, provides the power supply of microprocessor test side to make starting-up signal behind the key power sense circuit 116 and uses.
Wherein reverse protection circuit 102,112 is made up of commutation diode, and the input end of accumulator and key power supply is in series with commutation diode respectively, plays the reverse protection effect.Surge absorbing circuit 104 adopts the TVS pipe, and the above surge voltage of 39V is suppressed, and the surge and the high-frequency impulse that absorb on the power supply disturb.Filtering circuit 106 is made of the capacitor on winding ground.Low-power consumption 5V D.C. regulated power supply 108 is provided simultaneously by accumulator and key power supply, power for a long time by accumulator after closing the key power supply, for providing power supply under governor circuit 40 holding states, this 5V D.C. regulated power supply 108 mainly is made of TLE4275G chip and peripheral cell, it adopts existing general circuit, because TLE4275G is a low-power dissipation power supply, can reduce the system standby power consumption.5V switching power supply 110 is subjected to the control of microprocessor, and output is closed during holding state, is used for the power supply power supply of the peripheral circuit except that governor circuit 40.This 5V switching power supply 110 mainly is made of LM2575-5 chip and peripheral cell, and it adopts existing general circuit, and the on off state of power supply is controlled by microprocessor.
The key power supply behind reverse protection circuit 112 and filtering circuit 114 to key power sense circuit 116.Key power sense circuit 116 to 4.7V, offers the microprocessor detection port with the 24V power supply voltage stabilizing of key switch output, allow software in the microprocessor judge system current be to be in start or holding state.
Two, signal input circuit 20
Vehicle speed signal is that square-wave pulse signal, automatic gear-box RS232 data are the square-wave pulse of serial code, amplitude is 0～24V, vehicle speed signal sample circuit 222 and automatic gear-box signal sample circuit 224 are converted to the square-wave pulse of 0～5V by resistance pressure-dividing network with input signal, again after the filtering of π shape RC network by the pulse input end mouth sampling input of microprocessor.Vehicle speed signal sends from the vehicle speed sensor that is installed on the wheel box, and output signal is that frequency changes square-wave pulse continuously, through the gauge outfit motor drive signal of the corresponding speedometer indicating positions of output after the software processes in the microprocessor.The automatic gear-box signal sends from the automatic gear-box controller, and output signal is the RS232 data that meet the complete machine communications protocol, shows to LCD display through corresponding gear value and the wheel box failure code of output after the software processes in the microprocessor.
The fuel quantity signal is the voltage signal of 0～5V, send from the fuel-quantity transducer that is installed in the fuel tank, fuel quantity signal sample circuit 242 is imported by the A/D input port sampling of microprocessor after the filtering of π shape RC network after oil mass signal is decayed by resistance pressure-dividing network again.The torque converter oil temperature signal is the resistance signal of 17.2～372.3 Ω, sampling is from the thermistor (temperature) sensor that is installed on the hydraulic pitch device, torque converter oil temperature signal sample circuit 244 with load by moving the 5V power supply on the 100 Ω resistance, for signal provides working current, obtain signal voltage after pull-up resistor and the load dividing potential drop, after the resistance pressure-dividing network decay, after RC network filtering, import again by the A/D input port sampling of microprocessor.Fuel quantity signal and torque converter oil temperature signal are after sampling, through the gauge outfit motor drive signal of the corresponding indicating positions of output fuel gage and torque converter oil thermometer after the software processes in the microprocessor.
The principle of work of switching signal signal sample circuit 28 is as follows:
Parking brake signals sample circuit 2802; service brake signal sample circuit 2804; lubricating system fault-signal sample circuit 2806; air cleaner jam signal sample circuit 2808; steering fault-signal sample circuit 2810; caution signal sample circuit 2812; gear box oil forces down signal sample circuit 2814; wait for starting state signal sample circuit 2816; the high signal sample circuit 2818 of pollution degree of hydraulic oil; charged state signal sample circuit 2820; service mode signal sample circuit 2822; drive axle low oil pressure signal sample circuit 2824; stopped status signal sample circuit 2826; the high signal sample circuit signal sample circuit 2828 of hydraulic oil temperature is the grounding switch signal sample circuit; signal wire is by switch ground connection, and signal divides ground connection and unsettled two states (effective during ground connection).Circuit input end is by moving 5V power supply (VCC1) on the resistance, input signal is become the high-low level signal of 0V or 5V by switch state, is input to input parallel port input expander 32 after RC network filtering.
Headlight leaves that signal sample circuit 2830, right turn lamp are opened signal sample circuit 2832, the left steering lamp is driven signal sample circuit 2834, lubricating system run signal sample circuit 2836, power cut signal sample circuit 2838, starting state signal sample circuit 2840, emergent steering run signal sample circuit 2842 for connecing the power switch signal sample circuit, signal wire connects the 24V direct supply by switch, and signal divides 24V voltage and unsettled two states (effective when connecing power supply).Circuit input end converts input signal the high-low level signal of 0V or 5V to by resistance pressure-dividing network, is input to input and port expansion circuit 32 after RC network filtering.
The switching signal that samples converts input microprocessor behind the serial code to by input and port expansion circuit, the drive signal of exporting each LED alarm lamp correspondence by output and port expansion circuit after software processes is to led drive circuit, and whether decision opens indicating fault and external alert hummer (the alarm level debugging is onlinely to be provided with) according to alarm level.
Three, port expansion circuit
Port expansion circuit comprises input and port expansion circuit 32 and output and port expansion circuit 34.System is for reducing whole cost, and LCD display that microprocessor is integrated and No. four stepper motor gauge outfit PWM drive function, has therefore taken I/O mouths a large amount of on the microprocessor chip.Not enough I/O mouth quantity is carried out the parallel port expansion by the serial ports of microprocessor by shift register.Wherein input and port expansion circuit 32 adopt CD4021 as expansion IC, and monolithic CD4021 has 8 bit parallel input capabilities, now by three cascades, realize maximum 24 passages input expansions.Output and port expansion circuit 34 adopt CD4094 as expansion IC, and monolithic CD4094 has 8 parallel port fan-out capabilities, now by three cascades, realize maximum 24 passages output expansions.Above-mentioned port expansion circuit all adopts existing general digital circuit.
Four, governor circuit 40
System adopts the H8S/2282 single-chip microcomputer of RENESAS (Rui Sa) company as microprocessor.But this chip is the motor vehicle instrument special integrated circuit of the H8S/300H kernel of a employing crypto bus, it is based on 16 bit CPUs of supporting real-time simulation and tracking, the oikocryst vibration frequency is 16.78MHZ, and has the embedded high-speed Flash storer of 128k byte.Chip internal has the FullCAN-style interface of 1 interconnection, simultaneously, also has 8 tunnel 10 A/D converters, supports that No. 4 stepper motor PWM drive, maximum 80 sections functions such as LCD driving.
5V D.C. regulated power supply 108 power supplies that microprocessor is made of TLE4275G.Main supervision key power supply, the start/holding state of control peripheral circuit be responsible for; Collect the input signal of CAN bus, RS232 Serial Port Line data and on-board controller, sensor, alarm switch etc., handle the duty of back output meter pointer stepper motor operational factor, LCD displaying contents, alarm lamp and hummer and wait until corresponding driving circuit or executive component.Microprocessor function is mainly realized under the control of software in the system.
Control Software in the master control system is deposited in the sheet with microprocessor chip on the Flash storer, parameter and operation result is set is kept in the storer 44.Storer 44 is made up of the 93C66 chip, has 4k bit memory capacity.
Five, the alarm lamp driving circuit 50
The working current of every road warning indication LED circuit for lamp 54 that alarm lamp driving circuit 50 drives is 10-15mA.
Alarm lamp driving circuit 50 is made up of 4 ULN2003A darlington transistor array, and monolithic ULN2003A is integrated 7 groups of Darlington transistors can be realized the driving of 28 paths of LEDs lamps at most.
Warning indication LED circuit for lamp 54 comprises: the major error alarm lamp is composed in series by two red LED and current-limiting resistance, directly drive by the I/O of microprocessor, during work with the 1Hz frequency scintillation.Lubricating system fault, steering fault, air cleaner are stopped up, engine motor oil pressure is low, gear box oil forces down, drive axle low oil pressure, hydraulic oil temperature height, pollution degree of hydraulic oil height, parking braking, service brake, charged state, stopped status alarm lamp each be composed in series by 1 red LED and current-limiting resistance, he lights during work; Emergent steering operation, power cut, starting state, warning alarm lamp respectively are composed in series by 1 yellow led and current-limiting resistance, light during work; The right turn lamp is opened, the left steering lamp is opened, lubricating system operation alarm lamp respectively is composed in series by 1 green LED and current-limiting resistance, lights during work; Headlight leaves, the service mode alarm lamp respectively is composed in series by 1 blue led and current-limiting resistance, lights during work; Wait for that starting state is composed in series by 1 White LED and current-limiting resistance, light during work.Alarm lamp driving circuit 50 is by 5V switching power supply 110 power supplies of belt switch function, every paths of LEDs working current 10-15mA.
Six, the control signal output circuit 60
The control signal output circuit comprises emergent steering output power amplifying circuit 62, power arm shock mitigation system output power amplifying circuit 64 and outside hummer output power amplifying circuit 66.
Each is made of every road output power amplifying circuit a transistor, field effect transistor and plurality of peripheral resistance.Form preamplifying circuit by triode, with the 5V control signal paraphase of microprocessor output and be amplified to 24V, form power amplification circuit by field effect transistor again output current is amplified.Circuit 62 maximum currents are 12A, and circuit 64,66 maximum currents are 3A.
Seven, the dial illumination circuit 70
Eight, other peripheral circuit
Other peripheral circuit comprises: stepper motor gauge outfit 82, LCD display 84, system debug interface circuit 86.
Stepper motor gauge outfit 82
System adopts stepper motor gauge outfit 82 to drive parameters such as pointer indication engine speed, engine water temperature, torque converter oil temperature, fuel quantity.
Motor is driven by the PWM stepper motor driver that the microprocessor chip integration becomes, and integrated stepper motor driver has 4 tunnel independence output channels.Stepper motor gauge outfit 82 drives the pointer operation of being fixed on the axle with the deflection angle that pulse drive signal converts output shaft to.Stepper motor driver is subjected to the Opportunity awaiting control for linear signal controlling of microprocessor by 5V switching power supply 110 power supplies of belt switch function, and driver and stepper motor gauge outfit are not worked during standby.
System adopts LCD display 84 to show contents such as fluid drive gear box, wheel box failure code, the speed of a motor vehicle, system voltage, engine consumption, system's air pressure, environment temperature, engine failure code.
System debug interface circuit 86
Debugging interface is one 16 pin plug, mainly is made up of power lead, ground wire, serial port data line, clock cable, CAN data line, debugging mode selection wire and instrument simulating signal incoming line etc.After commissioning device is connected, can make online programming to debugged system.
[detailed functions description]
The detailed functions and the method to set up of this shovel loader blind controller system are described below:
1. power supply and system are to the response of key switch signal
System's power supply is mainly provided by battery feed, and open state is powered to change by the key power supply down when system's battery feed line connects fault and provided.
A. after battery feed was connected, system was in the monitor state to key switch.LCD display 84 is in demonstration and opens or closed condition according to the situation difference is set; The 5V Switching Power Supply is closed, and microprocessor is in holding state, and all the other peripheral circuits cut out.
B. when microprocessor detected key switch and opens, system wake-up also carried out startup self-detection: LCD display 84 shows all segment encodes; All LED alarm lamps except that electric injection system are lighted; All pointers are carried out and are resetted fast.The self check ends with system is recovered normal operating conditions after about 3 seconds, and LCD display 84 shows the state that shows before shutdown last time, and pointer is indicated to the scale position of instrument current input signal correspondence in 1 second.
C. when detecting key switch, system's execution shutdown programm: the state of LCD being gone up demonstration is preserved (being stored in the eeprom memory 44, down together), if the current failure code that shows of system is then all preserved failure code; Simultaneously each list index is returned to the scale reference position fast, closes the power supply (not having the requirement that continues demonstration as the back LCD display 84 of shutting down) of stepper motor driver in stepper motor and the microprocessor then the lcd driver of closing simultaneously in the microprocessor.
Can be provided with when debugging the time delay of d. closing power supply, and scope is set: 4～15, and the stepping amount is 1; System delay powered-down after 3.2 seconds when being set to 4, every afterwards increase by 1 unit value of setting increases by 0.8 second corresponding time delay.
2. pointer is indicated and the alarm lamp part
A. engine speed indicator
Tachometer gage is that software control stepper motor gauge outfit drives the pointer demonstration.The indication angle is greater than 300 °.Pointing accuracy is (1/12) °/micro-stepping.Stable working when pointer normally moves, there is not obvious noise.270 ° of about 1 second of omnidistance response times of pointer, non-adjustable.
It is adjustable when the revolution speed meter pointer traffic direction is provided with.
Tachometer gage is maximum supports 14 sections (15 debug points) to regulate, and effective DATA value scope of each debug point is 0～127, and the stepping amount is 1, the corresponding needle deflection of each DATA value (1/6) °; Can revise (changing the DATA value, down together) to the deviation work trace of each debug point during debugging.The spacing value that tachometer gage is every section can be selected when being provided with, and range of choice is 0.5ktr (thousand rev/mins) or 1ktr.
The input signal of tachometer gage is the CAN data, and when the tach signal of input during less than the startup value that is provided with, revolution speed meter pointer is failure to actuate.It is 0～31 that the startup value is provided with scope, and the stepping amount is 1, and the startup value is 0.3ktr when being provided with 0～2, the every afterwards increase value of setting startup value increase 0.1ktr of 1 unit.
Tachometer gage can be supported two-way warning output by the hardware circuit expansion, and supports to be set to buzzer and report to the police.It is optional when the warning output channel is provided with; The warning form is independent the warning; Warning return difference value can be provided with, and the scope of setting is 0～31, and the stepping amount is 1, and the value of setting is that 0 o'clock return difference is about 0.05ktr, and the corresponding return difference value of every afterwards increase by 1 unit value of setting increases 0.05ktr.
B. engine water temperature table, torque converter oil thermometer, fuel gage
Water-thermometer, oil thermometer, fuel level gauge are that software control stepper motor gauge outfit drives the pointer demonstration.The indication angle is greater than 100 °.Pointing accuracy is (1/12) °/micro-stepping.Stable working when pointer normally moves, there is not obvious noise.90 ° of omnidistance response times of pointer can be provided with greater than (minimum is 3 seconds).
Water-thermometer, oil thermometer, adjustable when fuel level gauge pointer traffic direction is provided with.
Water-thermometer, oil thermometer, the maximum support of fuel level gauge 7 sections (8 debug points) are regulated, and effective DATA value scope of each debug point is 0～63, and progressive amount is 1,0.39 ° of the corresponding needle deflection of each DATA value; Can do the FADJ memory respectively to each debug point during debugging and (provide FADJ automatic memory function in addition for raising the efficiency commissioning device, new table can use this function when debugging for the first time, down together), make instrument value of feedback and commissioning device output valve basically identical (The Scarlet Letter do not occur with value of feedback and get final product, down together).
The input signal of water-thermometer is the CAN data, and the input pickup resistance value scope that oil thermometer, fuel level gauge can be provided with is 1～512 Ω.Can select opening journey expanded function when the sensor electrical resistance surpasses 512 Ω, range of choice is 1 times, 2 times, 4 times.
Instrument input end of analog signal mouth is by the built-in ADC of microprocessor (mould one number converter in the system, down together) magnitude of voltage that is taken to is converted to the discernible digital quantity of software, A/D input port sampled voltage scope on the microprocessor is 0～4.7V, and maximum A/D precision is 1024 points.Can change the input of ADC and the ratio between output by adjusting " A/D correction factor " when being provided with, the conversion value of exporting when making full scale is near the big conversion accuracy of amount.The output valve of A/D conversion will be overflowed after input surpasses setting range, and software is judged as the sensor signal broken string; Software was not judged as CAN bus broken string when the CAN data that meet the communications protocol requirement were received by system.System will discern continuously to it after the signal broken string occurring, not recover positive constant pointer as signal in about 16S and will get back to the reference position of scale fast, and the interior signal of 4S is normal continuously according to appointment afterwards, and pointer will quickly recover to normal indicating positions.
Water-thermometer, oil thermometer, the fuel level gauge pointer method of operation can be set to damping mode or undamped mode.When selecting damping mode, damping time, debugging can be provided with, and scope is set: 0～63, and the stepping amount is 1,90 ° of required times of the corresponding pointer operation of the per unit value of setting are about 3S.Fuel level gauge can enter into the driving damping mode when the input of system vehicle speed signal, when at this moment pointer is normal mode of operation damping time 4 times.
Water-thermometer, oil thermometer, when fuel level gauge is set to damping mode, under the default situations behind system's normal boot-strap in about 3S pointer can run to the scale position of input signal correspondence fast, enter into damping mode then.As needs, can make water-thermometer, oil thermometer, fuel level gauge pointer behind system's normal boot-strap, directly enter into damping mode by selecting initial microinching option when debugging is provided with, run to the scale position of input signal correspondence with normal speed.
Can select two kinds of modes of operation of normal mode or quick mode during system debug.It is identical when the pointer running status is with operate as normal during normal mode; Shielding pointer operation damping function during quick mode.Water-thermometer, oil thermometer, fuel level gauge can be supported two-way warning output by the hardware circuit expansion, can select when warning direction and warning output channel are provided with.Some additional functions are supported in the output of reporting to the police, and can select when being provided with: alarm lamp flicker, buzzer warning, hummer are interrupted reports to the police.Warning return difference value can be provided with, and the scope of setting is 0～31.The stepping amount is 1, and the value of setting is that 0 o'clock return difference is about 0.2 °.
C. engine operation stopwatch
The engine operation stopwatch shows for the software control LCD display.Internal system is with timing second, and the unit of display is hour.
(representative engine operation) stopwatch timing when comprising engine rotational speed signal in the CAN data, data are stored in the storer when closing.Displayed value can not be removed, and all show the demonstration of starting from scratch automatically of the full back of counting, position systems.
3.LCD display and by-pass cock
The a.LCD display
LCD display is that segment code type shows (comprising fixed character digital and expression display definition and unit), and displaying contents divides left and right sides two parts.Left side content is the wheel box viewing area, and the right is the integrated information viewing area.
The wheel box viewing area is made up of the character string " TRANS.FAULT CODE " of the arrow up and down on two 10 hop count sign indicating numbers, the digital left side and 4 whippletrees and top.Show the wheel box states by first in different digital districts of signal content and left arrow during conventional the demonstration: drive shift show " F " and to upward arrow, reverse gear show " R " and downward arrow, neutral gear demonstration " N " and up and down arrow all do not show, second left side whippletree in digital district shows wheel box gear value: 1 grade of demonstrations " 1 " and 1 whippletree, 2 grades of demonstration " 2 " and 2 whippletrees, 3 (grade demonstration " 3 " and 3 whippletrees, grade demonstration " 4 " and 4 whippletrees, as advance 2 grades and show " F2 " and to 2 whippletrees of upward arrow.When comprising the wheel box failure code in the signal, character string " TRANS.FAULT CODE " is shown, and the gear content that shows in the digital simultaneously district is replaced (but the demonstration of arrow and whippletree is constant) by the failure code value, gets rid of the back system up to fault and starts shooting again.
The integrated information viewing area is by showing " 8888.8 * 10 at most
2" number and the character string " SERV.CODE " of expression displayed value functional definition of digital top or unit, " L/h ", " ℃ ", " kPa ", " psi ", " Volts ", " km/h ", " MPH " form.Digital part shows parameter values such as the speed of a motor vehicle, system voltage, engine consumption, system's air pressure, environment temperature, engine accumulative total working time during conventional the demonstration, digital top shows the unit of display parameter correspondence, and being shown content can switch by the external switch of operating system.Kept 30 seconds after opening the key switch power supply when not putting by switch during standby, system will finish the unit of display parameter between metric system/English system to be switched.
The speedometer indication range is during metric system: 0.0km/h～80.0km/h
The speedometer indication range is when made in Great Britain: 0.0MPH～50.0MPH
The system voltmeter indication range is: 0.0Volts～50.0Volts
Metric system system rain glass indication range is: 0.0 * 10
2KPa～10.0 * 10
2KPa
System made in Great Britain rain glass indication range is: 0psi～145psi
Environment temperature table indication range is :-50 ℃～80 ℃
Engine consumption table indication range is: 0.0L/h～50.0L/h
Engine operation stopwatch indication range is: 0.0h～9999.9h
When comprising the engine failure code in the signal, character string " SERV.CODE " is shown, and parameter value that shows in digital simultaneously district the and the unit that plays correspondence are replaced by the failure code value, gets rid of the back system up to fault and starts shooting again.
5, system debugging aids
The setting of native system above-mentioned functions and debugging need to finish after connecting supporting commissioning device " CAR9998 automobile instrument debug system ".
Claims (8)
1. shovel loader blind controller system based on the CAN bussing technique, comprise power circuit (10), signal input circuit (20), governor circuit (40), alarm lamp driving circuit (50), control signal output circuit (60), it is characterized in that: described governor circuit (40) adopts microprocessor and storer (44) as control module; After signal input circuit (20) is input to microprocessor with the signal that collects, the software processes rear drive alarm lamp driving circuit (50) in microprocessor, control signal output circuit (60).
2. according to the described shovel loader blind controller system of claim 1 based on the CAN bussing technique, it is characterized in that: the power supply of described shovel loader blind controller system is provided by battery feed and key power supply, battery feed and key power supply composition " or " logical relation, system provides power supply by accumulator during shutdown, and the start back is powered simultaneously by accumulator and key power supply.
3. according to the described shovel loader blind controller system of claim 1 based on the CAN bussing technique; it is characterized in that: described power circuit (10) is by reverse protection circuit (102; 112); surge absorbing circuit (104); filtering circuit (106; 114); low-power consumption 5V D.C. regulated power supply (108); the 5V switching power supply (110) of belt switch function; key power sense circuit (116) is formed; the input power supply is through reverse protection circuit (102); surge absorbing circuit (104) back to filtering circuit (106) carries out filtering; thereafter respectively by 5V D.C. regulated power supply (108); with 5V switching power supply (110) system is powered; described key power supply passes through reverse protection circuit (112) successively; filtering circuit (114) provides the power supply of microprocessor test side to make starting-up signal and uses behind the key power sense circuit (116).
4. according to the described shovel loader blind controller system based on the CAN bussing technique of claim 1, it is characterized in that: described signal input circuit (20) comprises digital signal samples circuit (22), simulating signal sample circuit (24), CAN interface circuit (26) and switching signal sample circuit (28);
Described digital signal samples circuit (22) comprises vehicle speed signal sample circuit (222) and automatic gear-box signal sample circuit (224), through software processes, show and input corresponding vehicle speed value, wheel box gear value and wheel box failure code behind the RS232 data sampling of vehicle speed signal and automatic gear-box output by microprocessor driven LCD display (84);
Described simulating signal sample circuit (24) comprises fuel quantity signal sample circuit (242) and torque converter oil temperature signal sample circuit (244), behind the signal sampling through software processes, drive pointer by microprocessor driven stepper motor gauge outfit, indication and corresponding fuel quantity value of input and torque converter oil temperature on index dial;
Described CAN interface circuit (26) carries out communication with the CAN bus, the CAN data comprise engine rotational speed signal, engine water temperature signal, engine consumption signal, system voltage signal, system's air pressure signal, ambient temperature signal, engine failure code, after the data acquisition through software processes, drive pointer by microprocessor driven stepper motor gauge outfit (82), indication and corresponding engine speed value of input and engine water temperature value on index dial; Show and the corresponding engine consumption value of input, system voltage value, system's atmospheric pressure value, ambient temperature value and engine failure code by microprocessor driven LCD display (84);
Described switching signal sample circuit (28) comprises that No. 14 grounding switch signal sample circuits and 7 tunnel connect the power signal sampling circuit, input signal is become the high-low level signal of 0V or 5V by sample circuit by switch state, the signal that samples converts input microprocessor behind the serial code to by input and port expansion circuit (32), pass through output and port expansion circuit (34) and alarm lamp driving circuit (50) through software processes by microprocessor after the data acquisition and drive and import corresponding LED alarm lamp (54), and whether decision opens indicating fault and external alert hummer according to alarm level.
5. according to the described shovel loader blind controller system based on the CAN bussing technique of claim 1, it is characterized in that: the working current of the every road warning indication LED circuit for lamp (54) that is driven by described alarm lamp driving circuit (50) is 10-15mA.
6. according to the described shovel loader blind controller system of claim 1 based on the CAN bussing technique, it is characterized in that: described control signal output circuit (60) comprises emergent steering output power amplifying circuit (62), power arm shock mitigation system output power amplifying circuit (64) and outside hummer output power amplifying circuit (66), every road output power amplifying circuit all is made up of preamplifying circuit and power amplification circuit, circuit (62) maximum current is 12A, and circuit (64,66) maximum current is 3A.
7. according to the described shovel loader blind controller system of claim 1 based on the CAN bussing technique, it is characterized in that: comprise dial illumination circuit (70), described dial illumination circuit (70) comprises the White LED lighting circuit of three tunnel parallel connections, every paths of LEDs working current 10-15mA.
8. according to the described shovel loader blind controller system of claim 1 based on the CAN bussing technique, it is characterized in that: comprise and joining other peripheral circuit of microprocessor that described other peripheral circuit comprises stepper motor gauge outfit (82), LCD display (84), system debug interface circuit (86).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837463U CN201170852Y (en) | 2008-03-07 | 2008-03-07 | Control system for loader instrument base on CAN bus technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837463U CN201170852Y (en) | 2008-03-07 | 2008-03-07 | Control system for loader instrument base on CAN bus technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170852Y true CN201170852Y (en) | 2008-12-24 |
Family
ID=40209904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200837463U Expired - Fee Related CN201170852Y (en) | 2008-03-07 | 2008-03-07 | Control system for loader instrument base on CAN bus technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170852Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354170A (en) * | 2011-06-29 | 2012-02-15 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Information display method for working state and energy storage situation of hydraulic hybrid power system of loader |
| CN103587418A (en) * | 2013-08-09 | 2014-02-19 | 科蒂斯技术（苏州）有限公司 | Composite-type intelligent instrument used for electromobile |
| CN105720683A (en) * | 2014-12-04 | 2016-06-29 | 天津市品通电力科技有限公司 | Device for intelligently selecting and inspecting onsite bus of electric power meter |
| CN106849785A (en) * | 2017-02-16 | 2017-06-13 | 山东仕脉机器人技术有限公司 | Driving stepper motor module and the system with the module |
| CN112078514A (en) * | 2020-08-05 | 2020-12-15 | 东风电驱动系统有限公司 | TFT screen alarm lamp self-checking method and device |
| CN113406412A (en) * | 2021-06-03 | 2021-09-17 | 东风柳州汽车有限公司 | Chassis test system and equipment thereof |
| CN113532565A (en) * | 2021-06-03 | 2021-10-22 | 惠州市德赛西威汽车电子股份有限公司 | Automobile fuel tank fuel simulation test method and system |
| CN114188187A (en) * | 2021-11-08 | 2022-03-15 | 陕西千山航空电子有限责任公司 | Control signal system |
-
2008
- 2008-03-07 CN CNU2008200837463U patent/CN201170852Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354170A (en) * | 2011-06-29 | 2012-02-15 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Information display method for working state and energy storage situation of hydraulic hybrid power system of loader |
| CN102354170B (en) * | 2011-06-29 | 2014-02-12 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Information display method for working state and energy storage situation of hydraulic hybrid power system of loader |
| CN103587418A (en) * | 2013-08-09 | 2014-02-19 | 科蒂斯技术（苏州）有限公司 | Composite-type intelligent instrument used for electromobile |
| CN105720683A (en) * | 2014-12-04 | 2016-06-29 | 天津市品通电力科技有限公司 | Device for intelligently selecting and inspecting onsite bus of electric power meter |
| CN106849785A (en) * | 2017-02-16 | 2017-06-13 | 山东仕脉机器人技术有限公司 | Driving stepper motor module and the system with the module |
| CN106849785B (en) * | 2017-02-16 | 2020-04-03 | 山东仕脉机器人技术有限公司 | Stepping motor driving module and system with same |
| CN112078514A (en) * | 2020-08-05 | 2020-12-15 | 东风电驱动系统有限公司 | TFT screen alarm lamp self-checking method and device |
| CN113406412A (en) * | 2021-06-03 | 2021-09-17 | 东风柳州汽车有限公司 | Chassis test system and equipment thereof |
| CN113532565A (en) * | 2021-06-03 | 2021-10-22 | 惠州市德赛西威汽车电子股份有限公司 | Automobile fuel tank fuel simulation test method and system |
| CN114188187A (en) * | 2021-11-08 | 2022-03-15 | 陕西千山航空电子有限责任公司 | Control signal system |
| CN114188187B (en) * | 2021-11-08 | 2024-04-16 | 陕西千山航空电子有限责任公司 | Control signal system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201170852Y (en) | Control system for loader instrument base on CAN bus technology | |
| CN102602294B (en) | Method and device for displaying fuel economy state of car engine | |
| CN107009901A (en) | A kind of SCM Based electric automobile combination electronic instrument | |
| CN102175280A (en) | Digitalized vehicle instrument simulating device | |
| CN201457268U (en) | Electronic instrument control circuit used for automotive vehicle | |
| CN101055200A (en) | CAN bus type agricultural machine digital instrument | |
| CN201457084U (en) | Intelligent combination instrument of vehicle | |
| CN201575816U (en) | Speedometer | |
| CN1877345A (en) | Traction battery voltage monitoring and alarming system | |
| CN2842446Y (en) | Be applied to the GPS locating device of railway locomotive | |
| CN210390779U (en) | Electric automobile combination instrument | |
| CN101858263A (en) | Motor vehicle | |
| CN202748224U (en) | Full operating condition detector for automatic automobile gear box | |
| CN204695049U (en) | Automobile combination meter collector | |
| CN201685715U (en) | Electronics combined instrument for vehicles | |
| CN206696697U (en) | A kind of automobile instrument hardware system based on CAN | |
| CN2659728Y (en) | Automobile running recording instrument with CAN network | |
| CN202209968U (en) | On-line vehicle fuel quantity monitoring device | |
| CN203172447U (en) | Vehicle instrument based on Internet of Things | |
| CN102486898B (en) | Automobile digital instrument teaching demonstration information processing method and device | |
| CN205281301U (en) | Photovoltaic board motor sweeper intellectualized supervisory control system | |
| CN2698689Y (en) | LED motorcycle instrument | |
| CN205384725U (en) | Motormeter alarm signal's detection control apparatus | |
| CN207535698U (en) | A kind of automobile combination meter | |
| CN201215502Y (en) | Oil gauge, thermometer checking instrument for automobile and motorcycle |
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: 20081224 Termination date: 20120307 |