CN2188784Y

CN2188784Y - Controller for electric system of vehicle

Info

Publication number: CN2188784Y
Application number: CN 93245617
Authority: CN
Inventors: 李俊林; 李俊山; 张志阳
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-30
Filing date: 1993-11-30
Publication date: 1995-02-01
Anticipated expiration: 2003-11-30

Abstract

The utility model discloses a controller for electric system of vehicle which belongs to the computer application technical field. The control system of the manager is mainly composed of an 8098 single chip computer, a program memory and an input / output expansion port. The analog-to-digital converter of the 8098 single chip computer collects the voltage, the current, the air inlet temperature and the throttle position. The externally extended 0809 analog-to-digital converter collects eight brightness signals. The high-speed input port of the 8098 monitors the shaft corner and other three switch buttons. The high-speed output port of the 8098 is used to control ignition. 1 port is used to control the starter. The PWM port is used to control the generator. The extended output port is used to control the light and the sound level of the horn. The manager solves the reasonable operation management problem of the generator (motor), the accumulator (battery) with (the starter, the lighting, the ignition) unsolved for a long time.

Description

Controller for electric system of vehicle

The utility model relates to a kind of automotive electrical system manager, belongs to computer utility.

At present, computing machine is used on automobile to some extent, but only limits to the import battle wagon, and is special purpose computer, costs an arm and a leg.The management of domestic automobile electrical system, still rest on dispersion, switch, relay, even manual control, cause starter, accumulator, generator, illumination, these major equipments of loudspeaker, can not be in favourable running status all the time, as the charging modes of generator accumulators, the electronic controller that uses can only carry out the charging far below the accumulator saturated capacity at present, cause the life of storage battery to subtract greatly, because its regulates is voltage, when near control voltage, generator only supplies initial firing current again, at this moment the 1A exciting curent is arranged approximately, beyond doubt very big waste, when generator when being lower than certain rotating speed, also to waste nearly 2A electric current and not generate electricity.The control of existing starter is that the driver is manual, be difficult in engine and light the instantaneous trip power supply that quickens suddenly because of cylinder is arranged, even fast idle is long-time, thereby quicken abrasion even rupture because of super-large centrifugal power makes rotor conductor.The import module and the import unit assemblage ignition, not only cost an arm and a leg, nor can control accurately the duration of ignition.Control to the igniting pulsewidth also is rough.

The purpose of this utility model is in order to overcome above-mentioned weak point of the prior art, is that the reasonably automotive electrical system manager of management is carried out accurately in work core, to igniting, generator and charging process, starter, light, loudspeaker and provide a kind of with 8098 single chip microcomputers.

The purpose of this utility model is achieved in that the control system of manager is made of 8098 single chip microcomputers, program storage, input and output expansion mouth.Four ports of the A/D converter of 8098 single chip microcomputers join with the output terminal of four isolated amplifiers respectively, the input end of four isolated amplifiers respectively and the shunt between the output of automobile current generator power supply, generator and the storage battery, the output of intake air temperature sensor, the output of valve opening sensor join; Four ports of the hsi port of 8098 single-chip microcomputers join with the output terminal of photoelectrical coupler respectively, and the input end of photoelectrical coupler joins with output, starter gauge tap, light gauge tap, the loudspeaker gauge tap of CKP respectively; 0 mouthful and 1 mouthful of the high speed output of 8098 single-chip microcomputers joins with igniting electronic switch and starter pull in winding by photoelectrical coupler and driver respectively; The width modulation delivery outlet P of 8098 single-chip microcomputers ₂5 magnetizing coils by photoelectrical coupler and driver and generator join; The A mouth of input and output expansion mouth and the input end of photoelectrical coupler join, and the output terminal of photoelectrical coupler joins with the large, medium and small sound level of high beam, dipped headlights, fog lamp, lampet, emergency warning lamp, loudspeaker respectively by driver; The B mouth of input and output expansion mouth joins through photoelectrical coupler and the delivery outlet that extends out the 0809A/D converter, and the input port of 0809A/D converter joins with 8 photosensitive devices respectively; The C mouth of input/output port joins by photoelectrical coupler and the control mouth that extends out the 0809A/D converter.The utility model is mainly to igniting, generator and charging process, the work of starter, light, loudspeaker carry out accurately reasonably management, that summarizes says so by the A/D commentaries on classics biography device of 8098 single-chip microcomputers, requires accurate analog quantity by isolated amplifier collection voltage, electric current, intake air temperature, four of accelerator open degrees; By the hsi port of 8098 single-chip microcomputers, by photoelectrical coupler monitoring crank angle and starter, light, three gauge tap of loudspeaker; By 0 mouthful of the high speed output of 8098 single-chip microcomputers, by the igniting of optocoupler driver control, 1 mouthful of high speed output is by optocoupler driver control starter; Width modulation delivery outlet P by 8098 single-chip microcomputers ₂5, control generator by the optocoupler driver; By the 0809A/D converter that extends out, gather 8 luminance signals by 8 photosensitive devices, the B mouth by input and output expansion mouth reads in then, and the C mouth is controlled the 0809A/D converter, and the A mouth is used for controlling the sound level of light and loudspeaker.The whole Control Software of the utility model are stored in the 8098 single-chip microcomputer specific program storeies.

The utility model compared with prior art, it is perfect that ignition function is bordering on, and solved long-term less than send out (motor) that solves, hold (battery), with (starter, the illumination igniting) reasonable operational management problem, rudimentary any vehicle during it can be used for, compare with direct outage igniting, fuel-economizing 2-10%, charing hydrogen discharge capacity reduces 1-3 doubly, the carbon monoxide discharge capacity reduces 50% to 1 times, and the storage battery life-span increases by 1 times, and capacity increases 10-30%, the generator life-span improves 100%, speaker sound life-span that improves prolongs, and illumination conforms with the traffic rules requirement, has increased safety factor.

The explanation of accompanying drawing drawing:

Fig. 1 is an electric theory diagram of the present utility model.

Fig. 2 is initialized to master routine work synoptic diagram in the software program of the present utility model.

Fig. 3 is master routine and igniting in the software program of the present utility model, generator management, loudspeaker hypervisor work synoptic diagram.

Fig. 4 is the light hypervisor work synoptic diagram in the software program of the present utility model.

The utility model is described in further detail below in conjunction with (accompanying drawing) embodiment:

The utility model is to be core with 8098 single-chip microcomputers, and the program storage that combines with it is EPROM ROM (read-only memory) (2764), and the input and output expansion is 8255 input and output expansion mouthful, and all Control Software are solidificated in the EPROM ROM (read-only memory).The A/D converter of 8098 single-chip microcomputer inside has four input ends, by program setting, can choose one of them port wantonly, as long as 22 microseconds promptly finish conversion, data is deposited in the sheet in the data field use for control program.The 0809A/D converter that extends out has 8 input ports, and its data need to read in the data field through 8255 input and output expansion mouth.The switching value of input port all is recorded in the special register fast, uses for the relevant controlling program, because be special purpose computer, it is consistent that its data dimension is not really wanted to ask.Input signal of the present utility model and simulation volume fully utilize, so by its function in detail the utility model is described in detail.

The igniting management.Control requirement to igniting is: (1) switching speed is fast; The time of (2) opening should be that just in time to reach energy saturated, and unnecessary electric current is not promptly arranged, because unnecessary electric current is not only useless, makes each component devices heating on the contrary even reduces spark energy; (3) Dian Huo time should be the time that engine running needs.The utility model has utilized the distinctive hsi port of 8098 single-chip microcomputers, it is the moment of recording events generation automatically, preferential interruption can take place again, thereby accurately record the corner (being position of piston) of bent axle and calculate its rotating speed, again according to supply voltage, intake air temperature, throttle position (decision time of ignition), calculate the open and close time (turn-offing constantly is time of ignition) of electronic switch, the open and close time is write in the control register of high speed output, just finished IGNITION CONTROL one time.

Generator and charge in batteries management.The desirable method of operation of generator and accumulator is: (1) generating charges a battery by the electric current of certain intensity, and the accumulator voltage that reaches capacity promptly stops charging; (2) generator is directly given the electric current that some electrical equipment provides, and its magnitude of voltage will be far below the requirement of charging, when the generator speed deficiency so that generator voltage when being higher than cell voltage, should not provide the exciting curent that causes thus.The utility model can be known the rotating speed of this moment generator, just carry out the generating program when only reaching this rotating speed, promptly revise the numerical value of width modulation register according to rotating speed, voltage, electric current (data of having gathered), when recording cell voltage complete generation outage when saturated, program enters monitoring battery voltage and is lower than certain value (fixed by vehicle) time and generates electricity once more, like this with regard to greatly near the ideal operation state.

The starter management.When starter will be worked at engine, it is being rotated a little less than under the idling, general design should have bigger exerting oneself this moment, but its thermal value is very big, just can burn in tens seconds, the idle running of series excitation direct current generator is also very high, even its centrifugal force can make self (rotor) disintegration.Therefore, use the starter time should be as short as 3-5 second, engine has so both kept starter and has also kept accumulator in case work should be withdrawed from immediately.The utility model is received starting command (i.e. the hsi port button of 8098 single-chip microcomputers), if do not add under the situation of distinguishing language (promptly antitheft), enter start-up procedure immediately, whether look into throttle position earlier suitable, whether turning round, lose one's life for 1 mouthful to the high speed output of 8098 single-chip microcomputers then and make (opening, the pass time writes in the control register), and supervision throttle position and rotating speed, excessive and the too small indicator signal that all provides of throttle, in case rotating speed is elevated to more than the idling suddenly, cut off starter power at once,, also cut off the electricity supply in order to avoid starter is impaired if fail work at the limiting time intrinsic motivation.

Light and loudspeaker management, the scheme instruction (button) that the luminance signal of the 0809A/D converter collection that the utility model basis extends out and the speed of a motor vehicle and driver give, write corresponding data (encoding in the lump) to an output input expansion mouthful A mouth with the loudspeaker sound level, promptly reach the purpose of turning on required light, the sound level control of loudspeaker also is according to the speed of a motor vehicle (being judged indirectly by engine speed, throttle position) decision sound level, and by encoding in the lump with light, write an input and output expansions mouthful A mouth (available 3 loudspeaker, or the mode that 1 typhon seals in resistance changes sound level).

Software program workflow of the present utility model is pressed Fig. 2-shown in Figure 4, that is:

One, initialization: each relevant register is set, and promptly high speed input/output port and other delivery outlet set-up functions give each control data to input and output expansion mouth, promptly set its function.

Two, wait for starting command: if add distinguishing language, just enter the distinguishing language program after receiving starting command, be not inconsistent and just enter alert program, as meet and just enter master routine.

Three, master routine: it is that program is turned in one section differentiation, and its data acquisition, generator charging management must be transferred.

Four, ignition procedure: it is one section high-priority interrupt service routine, as long as there is corner signal to enter just loading routine immediately of high speed output, at first survey rotating speed, calculate the duration of ignition and pulse width, send the corresponding command to high speed output, promptly finish an ignition process, whether then measure starting process, if transfer the promoter program, if not promptly returning master routine.

Five, generator charging supervisory routine: at first look into rotating speed, rotating speed as less than this time, promptly send zero to return master routine to width modulation output, as this time more than the rotating speed, just by the voltage that has collected, whether electric current and current pulsewidth are that charging all conditions that finishes are determined new pulsewidth, send corresponding registers data, return master routine.

Six, promoter program: send timing open and close data to 1 mouthful of high speed output and promptly return master routine.

Seven, data acquisition subroutine (1): this program is the working routine of A/D converter in 8098 single-chip microcomputers.Generator output voltage and cell voltage subtracted each other take advantage of certain coefficient just to obtain three data again; Two voltage and electric current, in addition two-way voltage signal without computing directly as the reference quantity of temperature and throttle position, five data have been sent promptly and have been returned.

Data acquisition subroutine (2): adopt from the 0809A/D converter by input and output expansion mouth, directly 8 data are sent into the data field, do reference by the light supervisory routine.

Eight, light supervisory routine: table look-at send number.

Nine, loudspeaker supervisory routine: engine speed is multiplied by throttle position and just roughly reflects the speed of a motor vehicle when driving (when putting into gear), also tables look-up then and send number when several (send will add the light coefficient), returns master routine again.

Claims

1, a kind of automotive electrical system manager comprises the control system of being made up of 8098 single chip microcomputers, program storage, input and output expansion mouth, it is characterized in that:

Four ports of the A/D converter of a, 8098 single-chip microcomputers join with the output terminal of four isolated amplifiers respectively, the input end of four isolated amplifiers respectively and the shunt between the output of automobile current generator power supply, generator and the storage battery, the output of intake air temperature sensor, the output of valve opening sensor join;

Four ports of the hsi port of b, 8098 single-chip microcomputers join with the output terminal of photoelectrical coupler respectively, and the input end of photoelectrical coupler joins with output, starter gauge tap, light gauge tap, the loudspeaker gauge tap of CKP respectively;

0 mouthful of the high speed output of c, 8098 single-chip microcomputers and 1 mouthful are respectively by photoelectrical coupler and driver and igniting electronic switch, and the starter pull in winding joins;

The width modulation delivery outlet P of d, 8098 single-chip microcomputers ₂₅Magnetizing coil by photoelectrical coupler and driver and generator joins;

The A mouth of e, input and output expansion mouth and the input end of photoelectrical coupler join, and the output terminal of photoelectrical coupler joins with the large, medium and small sound level of high beam, dipped headlights, fog lamp, lampet, emergency warning lamp, loudspeaker respectively by driver; The B mouth joins through photoelectrical coupler and the delivery outlet that extends out the 0809A/D converter, and the input port of 0809A/D converter joins with 8 photosensitive devices respectively; The C mouth joins by photoelectrical coupler and the control mouth that extends out the 0809A/D converter.

2, automotive electrical system manager according to claim 1 is characterized in that program storage is EPROM ROM (read-only memory) (2764).

3, automotive electrical system manager according to claim 1 is characterized in that input and output expansion mouth is 8255 an input and output expansion mouth.

4, automotive electrical system manager according to claim 1 is characterized in that whole Control Software are solidificated in the EPROM ROM (read-only memory).