CN2307294Y

CN2307294Y - Multifunctional detecting controller for car

Info

Publication number: CN2307294Y
Application number: CN 97221508
Authority: CN
Inventors: 邢念泽; 时飞
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-21
Filing date: 1997-07-21
Publication date: 1999-02-10
Anticipated expiration: 2007-07-21

Abstract

The utility model relates to an automotive multifunction detecting and controlling device, which comprises an input unit, a control unit, a power supplying unit, an anti-interference unit, an output driving unit, a setup unit, a display alarming unit and a storage unit. The utility model measures, stores, calculates, judges and automatically tracks the running speed of an automotive engine, the water temperature of a throttle switch or an automobile, the oil pressure of the throttle switch or the automobile, the level voltage of the throttle switch or the automobile, or the running speed of the throttle switch or the automobile, a vibration switch signal, a vehicle door switch signal, a wireless encoding signal, etc. to reach the purposes that automobile fuel saving and automobile pollution reduction are controlled, or automobile water temperature, automobile oil pressure and automobile level voltage are observed, or automobile running speed and engine rotating speed are observed, or anti-theft alarm is sent out, robbery is prevented, and motions are stopped. The utility model has the characteristics of accurate signal collection, small size, high intelligent degree, etc. A circuit board of the utility model is suitable for industrialized large-scale production.

Description

The multi-purpose vehicle(MPV) detection control apparatus

The utility model belongs to the electronic product field, is specifically related to a kind of multi-purpose vehicle(MPV) detection control apparatus.

Current society, automobile has become the part of people's life.One of important symbol that national auto industry level then is its modernization of the country level.China introduces and has transformed many auto production lines in order to adapt to the needs of people's productive life, makes the auto industry level of China that raising to a certain degree arranged.But compared with developed countries, the auto industry of China also is in developing stage, so, aspect automotive electronic technology, no matter be kind, quality and the class of automobile electronics, or its reliability, no matter also be the output value ratios of automobile electronics on automobile, or its growth rate is according to also there is a big difference than developed country.The develop rapidly of electronic technology in recent years is for good opportunity has been created in the exploitation and the development of dynamoelectric integrated vehicle new product.The height of automotive electronics degree has become the important symbol that the automobile modernization level is weighed by the world today.

Present automobile fuel saving subtracts electronic products such as the demonstration of water temperature oil pressure, anti-theft anti-robbery alarm of mileage/tachometer gage, the automobile of dirty controller, automobile, its function ratio is more single, the performance of some product is not very perfect, generally all is to utilize conventional discrete electronic component or small scale integration to realize.Subtract dirty controller as automobile fuel saving, the potentiometer that can only be passive pass through artificially adjusted control device adapts to the idling of automobile, and this has brought a lot of difficulties for upgrading of automobile electronics.The big inconvenience of the mileage of automobile/tachometer gage volume is installed.Burglar alarm manufacturing cost height, the price height is difficult to popularization and application.And these intelligent product degree are low, the development of incompatibility modern society.

The purpose of this utility model is to utilize high performance single-chip microcomputer to combine with advanced person's electronics integrated chip, providing a kind of detects automatically to rotating speed of automobile engine, Oil Switch signal or water temperature, oil pressure, battery voltage or vibroswitch signal, door contact interrupter signal, wireless encoding signal or travel speed signal etc., realize the automatic control of car engine air admittance amount, oil inlet quantity, water temperature cooling water system, the numeral of engine speed, automobile driving speed shows, carries out oil pressure, voltage, burglar alarm, anti-multi-purpose vehicle(MPV) detection control apparatus of robbing stop.

This multi-purpose vehicle(MPV) detection control apparatus comprises input block 1, control module 2, power supply unit 3, anti-interference unit 4, output driver element 5, it is characterized in that:

A) input block 1 carries out shaping, filtering with tach signal, the Oil Switch signal of motor car engine, the voltage signal of acquisition standard, send into can measure, store, calculate, judge, from the control module 2 of motion tracking, control module 2 connects with the anti-interference unit 4 that can produce reset pulse, output driver element 5 with output driving force respectively, the power supply unit 3 with shaping, filtering, voltage stabilizing function respectively with input block 1, control module 2, anti-interference unit 4, export driver element 5 and connect.

B) also comprise setup unit 6, display alarm unit 7, storage unit 8, input block 1 is with the water temperature signal of automobile, fuel injection pressure signal, level voltage signal or travel speed signal, rotating speed of automobile engine signal or vibroswitch signal, the door contact interrupter signal, the wireless encoding signal carries out shaping, filtering, the voltage signal of acquisition standard, send into and to measure, storage, calculate, judge, the control module 2 of automatic eye track, control module 2 respectively with the anti-interference unit 4 that can produce reset pulse, output driver element 5 with output driving force, can carry out the setup unit 6 of setting value, has the display alarm unit 7 that numerical value shows and alarm condition shows, the storage unit 8 that can carry out information stores connects, and has shaping, filtering, the power supply unit 3 of voltage stabilizing function respectively with input block 1, control module 2, anti-interference unit 4, output driver element 5, setup unit 6, display alarm unit 7, storage unit 8 connects.

The utlity model has following advantage:

1. the different signal of this device input can reach different measurement control purposes, the tach signal of input motor car engine, the purpose that the Oil Switch signal reaches the automatic fuel-saving dirt-reducing of automobile; Input water temperature signal, fuel injection pressure signal, level voltage signal reach the purpose of observing automobile water temperature, oil pressure, level voltage, and can control opening/stopping of fan according to water temperature; Travel rate signal, rotating speed of automobile engine signal of input reaches the purpose of the rotating speed of the travel speed of observing automobile, engine; Inputted vibration switching signal, door contact interrupter signal, wireless encoding signal reach burglar alarm, anti-purpose of robbing stop.

2. tracking motor idling automatically when detecting the rotating speed of motor car engine does not automatically need artificial adjustment;

3. according to the different operating modes in the automobilism,, fuel feeding is carried out the control of lead as upward slope, descending, zero load, heavy duty, brake etc.

4. utilize special anti-jamming circuit (watchdog circuit) to increase the antijamming capability of complete machine.

5. utilize the setup unit different settings, the difference in functionality of setting controller easily, the numeral that can realize or not have engine speed shows and the air inflow control when not having the throttle input signal, or realizes automobile burglar, warning, the anti-locking function of robbing.

Embodiment of the present utility model respectively schemes referring to following:

Fig. 1 is tach signal, the Oil Switch signal of the utility model detection motor car engine, realizes that automobile fuel saving subtracts the theory diagram of dirty control;

Fig. 2 detects water temperature signal, fuel injection pressure signal, level voltage signal or travel speed signal, rotating speed of automobile engine signal or vibroswitch signal, door contact interrupter signal, wireless encoding signal for the utility model, realizes the theory diagram of water temperature, oil pressure, level voltage or travel speed, rotating speed of automobile engine or vibroswitch, door contact interrupter, wireless encoding control;

Fig. 3 is the circuit theory diagrams of Fig. 1;

Fig. 4 is the circuit theory diagrams of Fig. 2;

The input block 1 of this device comprises input end P1～P3 (or P1, P2), resistance R 1, R2, R10, R13～R15, R19, capacitor C 1, C2, C7, C19, electrochemical capacitor C16, diode D3, voltage stabilizing diode Z1, photoelectrical coupler TIL, time base circuit U2:A, plug P3 links to each other with the I/O-11 mouth of control module 2, capacitor C 16 1 terminates between series resistance R13 and the R14, and draw a terminal and link to each other with plug P2, capacitor C 16 other end ground connection, another termination positive potential of resistance R 14, the other end of electricity group R13 links to each other with the anode of the luminotron of photoelectrical coupler TIL, the cathode of the luminotron of photoelectrical coupler TIL links to each other with ground, the collector of the output terminal of photoelectrical coupler TIL links to each other with positive supply, ground connection after the emitter of output terminal is connected with R19, and draw a signal from the emitter of output terminal and link to each other with the I/O-4 mouth of control module 2, plug P1 and R1, connect the THR end of time base circuit U2:A after the C1 series connection, from the series connection resistance R 1 and capacitor C 1 between draw a signal through the voltage stabilizing diode Z1 of reversal connection ground connection, be connected across again between the THR mouth and ground of time base circuit U2:A after diode D3 and resistance R 2 are in parallel, capacitor C 2 is connected across between the CVOIT end and ground of time base circuit U2:A, resistance R 15, R10, capacitor C 7 series connection back C7 end ground connection, the R15 end links to each other with the I/O-10 mouth of control module 2, drawing a terminal between capacitor C 7 and the resistance R 10 connects with the TRIG mouth of time base circuit U2:A, drawing a terminal between resistance R 10 and the resistance R 15 connects with the Q mouth of time base circuit U2:A, the DIS mouth of time base circuit U2:A is unsettled, link to each other with positive supply behind the VCC mouth of time base circuit U2:A and the R mouth short circuit, the GND mouth of time base circuit U2:A links to each other with ground, and the C19 cross-over connection is between the VCC of time base circuit U2:A mouth and GND mouth.

Control module 2 is governor circuits of this device, form by single-chip microcomputer U1, capacitor C 8, C12, C13, crystal oscillator C10, single-chip microcomputer adopts the AT89C2051 type, crystal oscillator C10 is connected across between the XTAL1 and XTAL2 mouth of single-chip microcomputer U1, and draw the signal back ground connection of connecting with capacitor C 12, C13 respectively from the two ends of crystal oscillator C10, capacitor C 8 is connected across between the positive potential Vcc mouth and earth potential GDN mouth of single-chip microcomputer.

Control module 2 reads the setting value of setup unit 6 according to the different conditions of input signal, after depositing the automobile original state in storage unit, output signal to the output driver element on the one hand, by air inflow, the oil inlet quantity of driver element Control of Automobile under different operating conditions, start or stop the water temperature cooling system of automobile, the anti-stop system etc. of robbing, simultaneously, output signal to the display alarm unit, by the rotating speed of display alarm unit display automobile engine, the information such as travel speed, level under-voltage, low oil pressure and burglar alarm of automobile.

Power supply unit 3 is for carrying out the direct current of automobile level the conventional DC-DC translation circuit of shaping filter, form by protective tube F1, voltage dependent resistor (VDR) R25, light emitting diode L5, capacitor C 6, C9, electrochemical capacitor C3, C5, diode D4, D5, three-terminal regulator block V1, light emitting diode L5 and resistance R 24 have been formed the power work indicating circuit, this unit general+12V cell voltage signal drops to+the 5V signal, for other unit provides working power.

Anti-interference unit 4 comprises time base circuit U2:B, resistance R 3, R6～R9, R11, R12, capacitor C 14, C15, electrochemical capacitor C4, C11, triode BG1, BG2, wherein, the DIS mouth of time base circuit U2:B connects with the emitter of triode BG1 and connects the power supply positive potential through resistance R 6, the base stage one tunnel of triode BG1 connects the power supply positive potential through resistance R 9, one the tunnel connects the I/O-6 mouth of control module 2 through capacitor C 15, resistance R 8 is connected across between the I/O-6 mouth of the positive potential of power supply and control module 2, the R mouth of time base circuit U2:B is connected between resistance in series R3 and the electrochemical capacitor C11, the positive potential of another termination power of resistance R 3, the other end ground connection of electrochemical capacitor C11, the positive potential of one termination power of resistance R 12, the collector of another termination triode BG2, the grounded emitter of BG2, the base stage of BG2 connects the Q mouth of time base circuit U2:B through resistance R 11, the THR mouth of time base circuit U2:B connects with the DIS mouth of time base circuit U2:B through resistance R 7, the THR mouth connects with earth potential through electrochemical capacitor C4, the TRIG mouth of time base circuit U2:B and THR mouth short circuit, the CVOIT mouth of time base circuit U2:B connects with earth potential through capacitor C 4.

Anti-jamming circuit is according to the signal or the power supply power on signal of control module output, and the output high-low level carries out initial work to control module.

This anti-interference unit by using the starting characteristic of time base circuit, for single-chip microcomputer provides a power-on reset signal, U2:B is 1/2 of time base circuit NE556, power on the initial stage at device, because resistance R 3, the time-lag action of capacitor C 11, make forced resetting mouth R be in electronegative potential, the output terminal Q output low level of time base circuit U2:B, triode BG2 ends, + 5V power supply is added to the RES reset terminal of control module 2 through resistance R 12, make single-chip microcomputer obtain a reset signal greater than 10ms, at the single-chip microcomputer reseting period, the I/O-6 mouth output high level of control module 2, BG1 ends, but the DIS mouth ground connection of time base circuit U2:B, capacitor C 4 can not be charged, at that time the R mouth current potential of basic circuit U 2:B approach+during 5V, the Q mouth output high level of time base circuit U2:B, the BG2 conducting makes the RES of control module 2 hold ground connection, reset period finishes, I/O-6 mouth by control module 2 is sent pulse, make the BG1 conducting with end, make on the C4 charging potential can not＞1/3Vcc, the Q mouth output of time base circuit U2:B is always high level, the single-chip microcomputer U1 operate as normal of control module 2.

When Single Chip Microcomputer (SCM) program is subjected to external interference, when producing abnormal operating state, the I/O-6 mouth stop pulse output of the single-chip microcomputer of control module, BG1 ends, start working by the multivibrator that resistance R 6, R7, capacitor C 4, time base circuit U2:B form, make single-chip microcomputer reenter reset period, the beginning initialization task, thus enter normal working routine.

Output driver element 5 is conventional triode relay drive circuit, when I/O-2, the I/O-7 of control module or I/O-5 mouth output high level, triode BG3, BG4, BG5 conducting, relay J 1, J2, J3 energising, its contact sends+power supply of 12V, drive solenoid valve and pilot lamp work simultaneously, opposite with above-mentioned situation when I/O-2, the I/O7 of control module or I/O-5 output low level.D7, C18, D8, C17 are anti-jamming circuit, and JMP2 is normally closed contact and normal opened contact wire jumper switch.

Setup unit 6 is conventional numerical value switch initialization circuit, utilizes the combination of three jumper switch diverse locations of SW1, can form eight kinds of different setting values, so that control module has different control function.

Display alarm unit 7 comprises that eight or four are total to anode nixie display U5, LED display driver U4, resistance R 16, capacitor C 25.Wherein, the 1-8 position gating pin of display U5 drives pin DIG0-DIG7 by bus with the position of LED display driver U4 and links to each other, the seven segment code of display U5 and radix point control bit link by SEGDEGG and the SEGDP of bus and LED display driver U4, the DOUT pin of LED display driver U4 is unsettled, resistance R 16 1 ends link to each other with the positive supply of power supply unit 3, one end is set end with the section drive current of LED display driver U4 and is linked to each other, capacitor C 25 1 ends link to each other with the power supply unit positive supply, link to each other with the power input of LED display driver U4 simultaneously, other end ground connection, the data input pin DIN of LED display driver U4, input end of clock CLK, sheet choosing end LOAD links to each other with the I/O outlet of control module 1 respectively, and two grounding leg GND of U4 link to each other with ground.

Chips such as the MAX7219 of the display driver U4 employing U.S. MAXIM company of this unit or MC14489, the MC14499 of U.S. MOTOROLA company, MC14495.Be embodiment with MAX7219 among the figure.By the different driving program of control module, can make display U5 show different information as follows:

1. simultaneously display automobile engine speed (3), automobile driving speed (3), water temperature (2) or voltage (2).

2. the cycle timesharing shows rotating speed, speed, water temperature, voltage, oil pressure and warning message.Preceding 1-5 position is a message identification, and back 3 is concrete numerical value.

Its storage unit 8 comprises serial two bus driver U3, wherein the A0-A2 pin of U3 and GND and TEST pin short circuit and link to each other with ground, and clock input pin SCL, data communication pin SDA link to each other with the I/O mouth of control module U1 respectively.U3 adopts the E2PROM family chip, and the AT24C02 with American ATMEL among the figure is embodiment.The effect of this storage unit is the idling initial value of storage motor car engine, speed of a motor vehicle when burglar alarm password and motor-vehicle accident state, rotating speed, water temperature and the oil pressure value of engine, play the effect of automobile black box, be the crash analysis parameter that provides the necessary technical.

When using the disclosed circuit production automobile fuel saving of this utility model to subtract dirty control device, as Fig. 1, shown in Figure 3, its input block has only two input end P1, P2, the signal of P1 input is the rotating speed of automobile engine signal, the signal of P2 input is the Oil Switch signal, single-chip microcomputer carries out work according to the signal of gathering, and the course of work is as follows:

After automobile key switch was closed, the The whole control device did not have working power.After the key switch closure ,+12V power supply is sent into control device by input end P4, the P5 of power supply.L5 is bright for the power work pilot lamp.

+ 12V power supply is after power supply filtering, voltage stabilizing, and output+5V power supply is for other unit provide working power.L2 is bright for the fuel feeding pilot lamp.Fuel-economizing pilot lamp L3 goes out.Cut off the power supply (normally closed solenoid valve) or energising (normally open type magnetic valve) with solenoid valve by the confession that P8 connects, make the engine idle fuel feeding, subtract dirty pilot lamp L1 and go out,, forbid air inlet by the air inlet solenoid valve outage that links to each other with P6.

After automotive ignition starts, ignition coil pulse signal (the proportional variation of the rotating speed of this signal and engine) is added to input block through input end P1, differentiate by R1, C1, be added to time base circuit U2:A input pin, by the square-wave signal after the shaping that U2:A exports and input pulse is wide, enter in the single-chip microcomputer U1 in the control module 2, U1 is after detecting input pulse, Oil Switch signal (taking from the throttle linkage system) is added to input block from P2, in conjunction with the Oil Switch signal, carry out following process and differentiate:

Automatically carry out initialization after the energising of this device, when waiting for the input of engine speed pulse signal, allow fuel feeding, forbid the control of air feed, L2 is bright for the fuel feeding pilot lamp, and fuel-economizing pilot lamp L3 goes out, and subtracts dirty pilot lamp L1 and goes out.After detecting pulse input signal, differentiation has or not throttle signal, has throttle signal to allow fuel feeding, forbids the control of air feed, and L2 is bright for the fuel feeding pilot lamp, and fuel-economizing pilot lamp L3 goes out, and subtracts dirty pilot lamp L1 and goes out.No throttle signal is then measured idle speed value and preservation, and pulse value and the idle speed value that records compared, and as if the control of then forbidding fuel feeding, permission air feed greater than idle speed value, fuel feeding pilot lamp L2 goes out, and L3 is bright for the fuel-economizing pilot lamp, and it is bright to subtract dirty pilot lamp L1.Otherwise allow fuel feeding, forbid the control of air feed, L2 is bright for the fuel feeding pilot lamp, and fuel-economizing pilot lamp L3 goes out, and subtracts dirty pilot lamp L1 and goes out.

Differentiate again and again by said process, send different control signals by U1, the switching of control oil-feed and air inlet solenoid valve, can make the driver when pin leaves the gas pedal non-refuelling, automobile enters fuel-economizing, subtracts dirty state, and recover the idling fuel feeding when reaching idling automatically, thereby changed the air-fuel ratio under the automobile different conditions.Look different automobile types, CO holds in both hands and high-volume reduces 70-90%, and NO holds in both hands and high-volume reduces 40-60%, and rate of economizing gasoline can reach 15-45%.

When the driver refuels, also the idling fuel feeding can be ended fully, make mixed steam enter cylinder through the carburetor main oil-hole fully, increased the vaporization degree of mixed steam, make that burning is more complete, thereby further reduce discharge of harmful gases, reach the purpose of fuel-economizing.

The weather cold in northern winter, automobile starting is difficulty relatively, and the output of P7 can be used to the mixed steam in the carburetor is heated.By about 30 seconds high level signal of U1 output, control signal can make once success of automotive ignition.

When utilizing Fig. 2, block diagram shown in Figure 4 and circuit theory diagrams to carry out speedometer for automobile/speed when showing, the tach signal of motor car engine (taking from platinum contact) is sent into input block 1 by P1, automobile driving speed signal (taking from wheel box) is sent into control module 1 by P2, two signals are sent into control module 2 after shaping, filtering, the single-chip microcomputer of control module 2 is measured two signals, and calculate with corresponding engine speed value of pulse and running car value and this two-value is sent among the U4 of display alarm unit 7, carry out the demonstration of two kinds of different modes by U5.

When utilizing Fig. 2, block diagram shown in Figure 4 and circuit theory diagrams carry out burglar alarm, when anti-misfortune stop is used, door contact interrupter signal (taking from car door), vibration signal (taking from car body) is by P1, P3 sends into input block, the wireless encoding signal is sent into by P2, after coded signal is set by the driver, control module 2 detect binary signal one of them the time, the output high level signal is given output driver element 5, by P6, P7 or P8 output 1～3 tunnel alerting signal, drive external units such as high message Chinese percussion instrument, play the alarm effect, also exportable signal is given display unit 7 simultaneously, make display unit show corresponding warning message, if after the contact point signal of one tunnel output is serially connected with ignition coil elementary, can realize that the anti-misfortune of automobile is reported to the police, locking function.

When Fig. 2, block diagram shown in Figure 4 and circuit theory diagrams being used for water temperature, oil pressure control, water temperature signal (taking from cooling water tank), oil-pressure shut-off switch signal (taking from grease-box), send into input block 1 by P3, P2, single-chip microcomputer is according to the size of temperature signal, the output control signal is given output driver element 5, by other but equipment such as P8 output starting/stop fan.Simultaneously, control module is sent the high and low signal of oil pressure into the display alarm unit, is gone out the height of oil pressure by the display alarm unit marks.Send into the level voltage signal by P1, go out the height of level voltage by the display alarm unit marks.

Claims

1. a multi-purpose vehicle(MPV) detection control apparatus comprises input block 1, control module 2, power supply unit 3, anti-interference unit 4, output driver element 5, it is characterized in that:

A) input block 1 carries out shaping, filtering with tach signal, the Oil Switch signal of motor car engine, the voltage signal of acquisition standard, send into can measure, store, calculate, judge, from the control module 2 of motion tracking, control module 2 connects with the anti-interference unit 4 that can produce reset pulse, output unit with output driving force respectively, the power supply unit 3 with shaping, filtering, voltage stabilizing function respectively with input block 1, control module 2, anti-interference unit 4, export driver element 5 and connect.

B) also comprise setup unit 6, display alarm unit 7, storage unit 8, input block 1 is with the water temperature signal of automobile, fuel injection pressure signal, level voltage signal or travel speed signal, rotating speed of automobile engine signal or vibroswitch signal, the door contact interrupter signal, the wireless encoding signal carries out shaping, filtering, the voltage signal of acquisition standard, send into and to measure, storage, calculate, judge, control module 2 from motion tracking, control module 2 respectively with the anti-interference unit 4 that can produce reset pulse, output unit 5 with output driving force, can carry out the setup unit 6 of setting value, has the display alarm unit 7 that numerical value shows and alarm condition shows, the storage unit 8 that can carry out information stores connects, and has shaping, filtering, the power supply unit 3 of voltage stabilizing function respectively with input block 1, control module 2, anti-interference unit 4, output driver element 5, setup unit 6, display alarm unit 7, storage unit 8 connects.

2. multi-purpose vehicle(MPV) detection control apparatus according to claim 1, the input block 1 that it is characterized in that it comprises input end P1～P3 (or P1, P2), resistance R 1, R2, R10, R13～R15, R19, capacitor C 1, C2, C7, C19, electrochemical capacitor C16, diode D3, voltage stabilizing diode Z1, photoelectrical coupler TIL, time base circuit U2:A, plug P3 links to each other with the I/O-11 mouth of control module 2, capacitor C 16 1 terminates between series resistance R13 and the R14, and draw a terminal and link to each other with plug P2, capacitor C 16 other end ground connection, another termination positive potential of resistance R 14, the other end of electricity group R13 links to each other with the anode of the luminotron of photoelectrical coupler TIL, the cathode of the luminotron of photoelectrical coupler TIL links to each other with ground, the collector of the output terminal of photoelectrical coupler TIL links to each other with positive supply, ground connection after the emitter of output terminal is connected with R19, and draw a signal from the emitter of output terminal and link to each other with the I/O-4 mouth of control module 2, plug P1 and R1, connect the THR end of time base circuit U2:A after the C1 series connection, from the series connection resistance R 1 and capacitor C 1 between draw a signal through the voltage stabilizing diode Z1 of reversal connection ground connection, be connected across again between the THR mouth and ground of time base circuit U2:A after diode D3 and resistance R 2 are in parallel, capacitor C 2 is connected across between the CVOIT end and ground of time base circuit U2:A, resistance R 15, R10, capacitor C 7 series connection back C7 end ground connection, the R15 end links to each other with the I/O-10 mouth of control module 2, drawing a terminal between capacitor C 7 and the resistance R 10 connects with the TRIG mouth of time base circuit U2:A, drawing a terminal between resistance R 10 and the resistance R 15 connects with the Q mouth of time base circuit U2:A, the DIS mouth of time base circuit U2:A is unsettled, link to each other with positive supply behind the VCC mouth of time base circuit U2:A and the R mouth short circuit, the GND mouth of time base circuit U2:A links to each other with ground, and the C19 cross-over connection is between the VCC of time base circuit U2:A mouth and GND mouth.

3. multi-purpose vehicle(MPV) detection control apparatus according to claim 1, the anti-interference unit 4 that it is characterized in that it comprises time base circuit U2:B, resistance R 3, R6～R9, R11, R12, capacitor C 14, C15, electrochemical capacitor C4, C11, triode BG1, BG2, the DIS mouth of time base circuit U2:B connects with the emitter of triode BG1 and connects the power supply positive potential through resistance R 6, the base stage one tunnel of triode BG1 connects the power supply positive potential through resistance R 9, one the tunnel connects the I/O-6 mouth of control module 2 through capacitor C 15, resistance R 8 is connected across between the I/O-6 mouth of the positive potential of power supply and control module 2, the R mouth of time base circuit U2:B is connected between resistance in series R3 and the electrochemical capacitor C11, the positive potential of another termination power of resistance R 3, the other end ground connection of electrochemical capacitor C11, the positive potential of one termination power of resistance R 12, the collector of another termination triode BG2, the grounded emitter of BG2, the base stage of BG2 connects the Q mouth of time base circuit U2:B through resistance R 11, the THR mouth of time base circuit U2:B connects with the DIS mouth of time base circuit U2:B through resistance R 7, the THR mouth connects with earth potential through electrochemical capacitor C4, the TRIG mouth of time base circuit U2:B and THR mouth short circuit, the CVOIT mouth of time base circuit U2:B connects with earth potential through capacitor C 4.