CN101323282A - Vehicle electric rear-view mirror control circuit with bus connector - Google Patents
Vehicle electric rear-view mirror control circuit with bus connector Download PDFInfo
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- CN101323282A CN101323282A CNA2008101171740A CN200810117174A CN101323282A CN 101323282 A CN101323282 A CN 101323282A CN A2008101171740 A CNA2008101171740 A CN A2008101171740A CN 200810117174 A CN200810117174 A CN 200810117174A CN 101323282 A CN101323282 A CN 101323282A
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Abstract
The invention relates to an automobile electric rearview mirror control circuit, which belongs to the automobile electronic control technical field. In the control circuit, a micro processing unit provided with a bus communication module is connected with the interface of the bus; meanwhile, the micro processing unit provided with the bus communication module is connected with a first motor driving circuit, a first motor fault diagnosis circuit, a second motor driving circuit, a second motor fault diagnosis circuit, a heater driving circuit, and a heater fault diagnosis circuit; the first motor driving circuit and the first motor fault diagnosis circuit are connected with a first motor of the electric rearview mirror; the second motor driving circuit and the second motor fault diagnosis circuit are connected with a second motor of the electric rearview mirror; the heater driving circuit and the heater fault diagnosis circuit are connected with a heating wire of the electric rearview mirror. The interface of the bus has the advantages of ensuring the electric rearview mirror to be conveniently connected with the bus, thus leading to simple control of an automobile electric system, optimization of the pencil of lines and room saving.
Description
Technical field
The present invention relates to a kind of vehicle electric rear-view mirror control circuit that has bus interface, belong to the auto electronic control technology field.
Background technology
But existing electromotion rearview mirror of car is made up of motor and a heater strip of two rotatings usually, the driver can realize the adjustment of rotation up and down, left rotation and right rotation adjustment and defrosting-defogging function to rear-vision mirror face easily by the operation to the back mirror shift knob.
In the orthodox car body electrical system, electric load such as driven rearview mirrors is connected with switch, or load is connected with the relay of switch institute control apparatus.By the make-break operation of shift knob, realize power electricity break-make control to load.This connection mode is when the clockwise and anticlockwise motor circuit application, and the line complexity takes up room greatly wire harness cost height.
In the modern automobile body electrical system, bussing technique is employed more and more.Use the automobile of bussing technique, it is with no longer being series relationship between electric load and the switch, but by total wire joint, monitors required control signal with the controller of electric load from communication bus, according to control signal realization relevant work state.Use the auto body wire harness of bussing technique and greatly simplify, reduced the wire harness cost, for automobile is reserved greater room.Controller local internet (ControllerArea Network, hereinafter to be referred as CAN) and vehicle local internet (Local Interconnect Network is hereinafter to be referred as LIN) be wherein two kinds cheap, reliability is high, widely used automobile bus technology.
Summary of the invention
The objective of the invention is to propose a kind of vehicle electric rear-view mirror control circuit that has bus interface, based on the automobile bus technology driven rearview mirrors on the automobile is designed, be connected with Vehicle Body Bus, according to the control of digital communication signal realization to the mode of operation of driven rearview mirrors, and driven rearview mirrors carried out trouble diagnosing, fault diagnosis result is sent to communication bus, thereby wire harness annexation in the simplification car, save interior space, make the user can understand the faulty condition of driven rearview mirrors easily simultaneously.
The vehicle electric rear-view mirror control circuit that has bus interface that the present invention proposes comprises:
Bus interface is used to make the microprocessing unit and the communication bus of band bus communication module to set up correspondence;
The microprocessing unit of band bus communication module, be used for reading control message from communication bus, export digital controlled signal Ctrl1 and Ctrl2 to first motor-drive circuit, output digital controlled signal Ctrl3 and Ctrl4 to the second motor-drive circuit, output digital controlled signal Ctrl5 is to heater drive circuit, and read digital signal S1 and S2 from the first electrical fault diagnostic circuit, read digital signal S3 and S4 from the second electrical fault diagnostic circuit, read digital signal S5 and S6 from the heater failure diagnostic circuit, read the result to first motor M 1 according to above-mentioned digital signal S1～S6, motor M 1 and temperature booster R carry out fault type and judge, judged result is carried out the message frame coding, according to the automobile bus agreement level signal of message frame coding is changed, change over signal is sent to bus interface;
First motor-drive circuit, be used for level height and break-make according to above-mentioned digital controlled signal Ctrl1 and Ctrl2 power controlling control signal P1 and P2, realizing the rotating control to first motor M 1 in the driven rearview mirrors, first motor-drive circuit is made up of P type metal-oxide-semiconductor K1 and K3, N type metal-oxide-semiconductor K2 and K4, photoelectric isolated chip T1～T4, diode D1～D4 and resistance R 1～R12;
The input anode of photoelectric isolated chip T1 wherein is connected with digital electric signal Vcc by resistance R 1, the input cathode of photoelectric isolated chip T1 is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip T1 is connected with the grid of P type metal-oxide-semiconductor K1 and an end of resistance R 2 simultaneously, the negative pole of output end of photoelectric isolated chip T1 is connected with earth signal by resistance R 3, source class while and the electric signal Vp of P type metal-oxide-semiconductor K1, the negative pole of diode D1, and the other end of resistance R 2 is connected, the drain electrode of P type metal-oxide-semiconductor K1 is connected horsepower output control signal P1 with the drain electrode of N type metal-oxide-semiconductor K2;
The input anode of photoelectric isolated chip T2 wherein is connected with digital electric signal Vcc by resistance R 4, the input cathode of photoelectric isolated chip T2 is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip T1 is connected with electric signal Vp by resistance R 5, the negative pole of output end of photoelectric isolated chip T2 is connected with the grid of N type metal-oxide-semiconductor K2 and an end of resistance R 6 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K1, the positive pole of diode D2, and the other end of resistance R 6 is connected, the drain electrode of N type metal-oxide-semiconductor K2 is connected horsepower output control signal P1 with the drain electrode of P type metal-oxide-semiconductor K1;
The input anode of photoelectric isolated chip T3 wherein is connected with digital electric signal Vcc by resistance R 7, the input cathode of photoelectric isolated chip T3 is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip T3 is connected with the grid of P type metal-oxide-semiconductor K3 and an end of resistance R 8 simultaneously, the negative pole of output end of photoelectric isolated chip T3 is connected with earth signal by resistance R 9, source class while and the electric signal Vp of P type metal-oxide-semiconductor K3, the negative pole of diode D3, and the other end of resistance R 8 is connected, the drain electrode of P type metal-oxide-semiconductor K3 is connected horsepower output control signal P2 with the drain electrode of N type metal-oxide-semiconductor K4;
The input anode of photoelectric isolated chip T4 wherein is connected with digital electric signal Vcc by resistance R 10, the input cathode of photoelectric isolated chip T4 is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip T4 is connected with electric signal Vp by resistance R 11, the negative pole of output end of photoelectric isolated chip T4 is connected with the grid of N type metal-oxide-semiconductor K4 and an end of resistance R 12 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K4, the positive pole of diode D4, and the other end of resistance R 12 is connected, the drain electrode of N type metal-oxide-semiconductor K4 is connected horsepower output control signal P2 with the drain electrode of P type metal-oxide-semiconductor K3;
The first electrical fault diagnostic circuit, be used to receive above-mentioned power control signal P1, with reference voltage V 1 and V2 respectively relatively after, convert comparative result to output digital signal S1 and S2 to the microprocessing unit with bus communication module, the first electrical fault diagnostic circuit is made up of two voltage comparator A1 and A2, photoelectric isolated chip T5 and T6, resistance R H13～R18 and resistance R H1, RL1, RH2 and RL2;
Voltage comparator A1 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A1 is connected with power control signal P1, the in-phase input end of voltage comparator A1 is connected with electric signal Vp by resistance R H1, the in-phase input end of voltage comparator A1 is connected with earth signal by resistance R L1 simultaneously, the mouth of voltage comparator A1 is connected with electric signal Vp by resistance R 13, the mouth of voltage comparator A1 is with being connected with the input cathode of photoelectric isolated chip T5, the input anode of photoelectric isolated chip T5 is connected with electric signal Vp by resistance R 14, photoelectric isolated chip T5 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T5 is connected with digital electric signal Vcc by resistance R 15, export digital signal S1 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A1 is V1;
Voltage comparator A2 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A2 is connected with power control signal P1, the in-phase input end of voltage comparator A2 is connected with electric signal Vp by resistance R H2, the in-phase input end of voltage comparator A1 is connected with earth signal by resistance R L2 simultaneously, the mouth of voltage comparator A2 is connected with electric signal Vp by resistance R 16, the mouth of voltage comparator A2 is with being connected with the input cathode of photoelectric isolated chip T6, the input anode of photoelectric isolated chip T6 is connected with electric signal Vp by resistance R 17, photoelectric isolated chip T6 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T6 is connected with digital electric signal Vcc by resistance R 18, export digital signal S2 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A2 is V2;
Second motor-drive circuit, be used for according to above-mentioned digital controlled signal Ctrl3 and Ctrl4, level height and the break-make of power controlling control signal P3 and P4, realizing the rotating control to second motor M 2 in the driven rearview mirrors, second motor-drive circuit is made up of P type metal-oxide-semiconductor K5 and K7, N type metal-oxide-semiconductor K6 and K8, photoelectric isolated chip T7～T12, diode D5～D8 and resistance R 21～R32;
The input anode of photoelectric isolated chip T7 wherein is connected with digital electric signal Vcc by resistance R 21, the input cathode of photoelectric isolated chip T7 is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip T7 is connected with the grid of P type metal-oxide-semiconductor K5 and an end of resistance R 22 simultaneously, the negative pole of output end of photoelectric isolated chip T7 is connected with earth signal by resistance R 23, source class while and the electric signal Vp of P type metal-oxide-semiconductor K5, the negative pole of diode D5, and the other end of resistance R 22 is connected, the drain electrode of P type metal-oxide-semiconductor K5 is connected horsepower output control signal P3 with the drain electrode of N type metal-oxide-semiconductor K6;
The input anode of photoelectric isolated chip T8 wherein is connected with digital electric signal Vcc by resistance R 24, the input cathode of photoelectric isolated chip T8 is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip T7 is connected with electric signal Vp by resistance R 25, the negative pole of output end of photoelectric isolated chip T8 is connected with the grid of N type metal-oxide-semiconductor K6 and an end of resistance R 26 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K5, the positive pole of diode D6, and the other end of resistance R 26 is connected, the drain electrode of N type metal-oxide-semiconductor K6 is connected horsepower output control signal P3 with the drain electrode of P type metal-oxide-semiconductor K5;
The input anode of photoelectric isolated chip T9 wherein is connected with digital electric signal Vcc by resistance R 27, the input cathode of photoelectric isolated chip T9 is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip T9 is connected with the grid of P type metal-oxide-semiconductor K7 and an end of resistance R 28 simultaneously, the negative pole of output end of photoelectric isolated chip T9 is connected with earth signal by resistance R 29, source class while and the electric signal Vp of P type metal-oxide-semiconductor K7, the negative pole of diode D7, and the other end of resistance R 28 is connected, the drain electrode of P type metal-oxide-semiconductor K7 is connected horsepower output control signal P4 with the drain electrode of N type metal-oxide-semiconductor K8;
The input anode of photoelectric isolated chip T10 wherein is connected with digital electric signal Vcc by resistance R 30, the input cathode of photoelectric isolated chip T10 is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip T10 is connected with electric signal Vp by resistance R 31, the negative pole of output end of photoelectric isolated chip T10 is connected with the grid of N type metal-oxide-semiconductor K8 and an end of resistance R 32 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K8, the positive pole of diode D8, and the other end of resistance R 32 is connected, the drain electrode of N type metal-oxide-semiconductor K8 is connected horsepower output control signal P4 with the drain electrode of P type metal-oxide-semiconductor K7;
The second electrical fault diagnostic circuit, receive above-mentioned power control signal P3, with reference voltage V 3 and V4 respectively relatively after, convert comparative result to microprocessing unit that digital signal S3 and S4 export the band bus communication module to, the second electrical fault diagnostic circuit is made up of two voltage comparator A3 and A4, photoelectric isolated chip T11 and T12, resistance R H33～R38 and resistance R H3, RL3, RH4 and RL4;
Voltage comparator A3 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A3 is connected with power control signal P3, the in-phase input end of voltage comparator A3 is connected with electric signal Vp by resistance R H3, the in-phase input end of voltage comparator A3 is connected with earth signal by resistance R L3 simultaneously, the mouth of voltage comparator A3 is connected with electric signal Vp by resistance R 33, the mouth of voltage comparator A3 is with being connected with the input cathode of photoelectric isolated chip T11, the input anode of photoelectric isolated chip T11 is connected with electric signal Vp by resistance R 34, photoelectric isolated chip T11 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T11 is connected with digital electric signal Vcc by resistance R 35, export digital signal S3 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A3 is V3;
Voltage comparator A4 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A4 is connected with power control signal P3, the in-phase input end of voltage comparator A4 is connected with electric signal Vp by resistance R H4, the in-phase input end of voltage comparator A3 is connected with earth signal by resistance R L4 simultaneously, the mouth of voltage comparator A4 is connected with electric signal Vp by resistance R 36, the mouth of voltage comparator A4 is with being connected with the input cathode of photoelectric isolated chip T12, the input anode of photoelectric isolated chip T12 is connected with electric signal Vp by resistance R 37, photoelectric isolated chip T12 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T12 is connected with digital electric signal Vcc by resistance R 38, export digital signal S4 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A4 is V4;
Heater drive circuit, be used for break-make according to above-mentioned digital controlled signal Ctrl5 power controlling control signal P5, to realize that the heater strip R in the driven rearview mirrors is carried out the control of power power supply break-make, heater drive circuit is made up of P type metal-oxide-semiconductor K9, photoelectric isolated chip T13, diode D9 and resistance R 41, R42 and R43; The input anode of photoelectric isolated chip T13 is connected with digital electric signal Vcc by resistance R 41, the input cathode of photoelectric isolated chip T13 is connected with digital controlled signal Ctrl5, the output head anode of photoelectric isolated chip T13 is connected with the grid of P type metal-oxide-semiconductor K9 and an end of resistance R 42 simultaneously, the negative pole of output end of photoelectric isolated chip T13 is connected with earth signal by resistance R 43, source class while and the electric signal Vp of P type metal-oxide-semiconductor K9, the negative pole of diode D9, and the other end of resistance R 42 is connected the drain electrode horsepower output control signal P5 of P type metal-oxide-semiconductor K9;
The heater failure diagnostic circuit, receive above-mentioned power control signal P5, with reference voltage V 5 and V6 respectively relatively after, convert comparative result to microprocessing unit that digital signal S5 and S6 export the band bus communication module to, the heater failure diagnostic circuit is made up of two voltage comparator A5 and A6, photoelectric isolated chip T13 and T14, resistance R H44～R49 and resistance R H5, RL5, RH6 and RL6;
Voltage comparator A5 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A5 is connected with power control signal P5, the in-phase input end of voltage comparator A5 is connected with electric signal Vp by resistance R H5, the in-phase input end of voltage comparator A5 is connected with earth signal by resistance R L5 simultaneously, the mouth of voltage comparator A5 is connected with electric signal Vp by resistance R 44, the mouth of voltage comparator A4 is with being connected with the input cathode of photoelectric isolated chip T13, the input anode of photoelectric isolated chip T13 is connected with electric signal Vp by resistance R 45, photoelectric isolated chip T13 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T13 is connected with digital electric signal Vcc by resistance R 46, export digital signal S5 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A5 is V5;
Voltage comparator A6 wherein is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A6 is connected with power control signal P5, the in-phase input end of voltage comparator A6 is connected with electric signal Vp by resistance R H6, the in-phase input end of voltage comparator A6 is connected with earth signal by resistance R L6 simultaneously, the mouth of voltage comparator A6 is connected with electric signal Vp by resistance R 47, the mouth of voltage comparator A6 is with being connected with the input cathode of photoelectric isolated chip T14, the input anode of photoelectric isolated chip T14 is connected with electric signal Vp by resistance R 48, photoelectric isolated chip T14 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T14 is connected with digital electric signal Vcc by resistance R 49, export digital signal S6 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A6 is V6.
The vehicle electric rear-view mirror control circuit that is used to have bus interface that the present invention proposes, the electrical apparatus control system and the failure warning system that are used for automotive electrical system, the interface of total linearize makes driven rearview mirrors can be advantageously connected to bus, make that automotive electrical system control is simple, wire harness optimization, space saves, for the intelligentized design of vehicle mounted electrical apparatus provides a kind of embodiment that is easy to realize.Control circuit of the present invention, from the control signal of bus monitoring back mirror, the control to driven rearview mirrors realization relevant work state realizes trouble diagnosing to driven rearview mirrors, and by bus interface fault diagnosis result is sent to communication bus.Motor-drive circuit in the control circuit of the present invention and fault diagnosis circuit can be used in other clockwise and anticlockwise motor load is controlled and diagnosed, as the automobile scavenger fan.
Description of drawings
Fig. 1 is the circuit block diagram of the vehicle electric rear-view mirror control circuit that has bus interface of the present invention's proposition.
Fig. 2 is the schematic circuit diagram of first circuit for controlling motor in the control circuit of the present invention.
Fig. 3 is the schematic circuit diagram of the first electrical fault diagnostic circuit in the control circuit of the present invention.
Fig. 4 is the schematic circuit diagram of second circuit for controlling motor in the control circuit of the present invention.
Fig. 5 is the diagnotic schematic circuit diagram of second electrical fault in the control circuit of the present invention.
Fig. 6 is the schematic circuit diagram of the heater drive circuit in the control circuit of the present invention.
Fig. 7 is the schematic circuit diagram of the heater failure diagnostic circuit in the control circuit of the present invention.
The specific embodiment
The vehicle electric rear-view mirror control circuit that has bus interface that the present invention proposes, its circuit block diagram comprises as shown in Figure 1:
Bus interface is used to make the microprocessing unit of above-mentioned band bus communication module and communication bus to set up correspondence, is a kind of common interface that patches.
The microprocessing unit of band bus communication module, be used for reading control message from communication bus, output digital controlled signal Ctrl1 and Ctrl2 to the first motor-drive circuit, output digital controlled signal Ctrl3 and Ctrl4 to the second motor-drive circuit, output digital controlled signal Ctrl5 is to heater drive circuit, and read digital signal S1 and S2 from the first electrical fault diagnostic circuit, read digital signal S3 and S4 from the second electrical fault diagnostic circuit, read digital signal S5 and S6 from the heater failure diagnostic circuit, read the result to first motor M 1 according to above-mentioned digital signal S1～S6, second motor M 2 and temperature booster R carry out fault type and judge, judged result is carried out the message frame coding, according to the automobile bus agreement level signal of message frame coding is changed, change over signal is sent to bus interface.
First motor-drive circuit, digital controlled signal Ctrl1 and Ctrl2 horsepower output control signal P1 and P2 according to the microprocessing unit of band bus communication module is exported control the rotating of first motor M 1 in the driven rearview mirrors with realization.The circuit theory of first motor-drive circuit is made up of P type metal-oxide-semiconductor K1 and K3, N type metal-oxide-semiconductor K2 and K4, photoelectric isolated chip T1～T4, diode D1～D4 and resistance R 1～R12 as shown in Figure 2.The input anode of photoelectric isolated chip T1 is connected with digital electric signal Vcc by resistance R 1, the input cathode of photoelectric isolated chip T1 is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip T1 is connected with the grid of P type metal-oxide-semiconductor K1 and an end of resistance R 2 simultaneously, the negative pole of output end of photoelectric isolated chip T1 is connected with earth signal by resistance R 3, source class while and the electric signal Vp of P type metal-oxide-semiconductor K1, the negative pole of diode D1, and the other end of resistance R 2 is connected, the drain electrode of P type metal-oxide-semiconductor K1 is connected horsepower output control signal P1 with the drain electrode of N type metal-oxide-semiconductor K2.The input anode of photoelectric isolated chip T2 is connected with digital electric signal Vcc by resistance R 4, the input cathode of photoelectric isolated chip T2 is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip T1 is connected with electric signal Vp by resistance R 5, the negative pole of output end of photoelectric isolated chip T2 is connected with the grid of N type metal-oxide-semiconductor K2 and an end of resistance R 6 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K1, the positive pole of diode D2, and the other end of resistance R 6 is connected, the drain electrode of N type metal-oxide-semiconductor K2 is connected horsepower output control signal P1 with the drain electrode of P type metal-oxide-semiconductor K1.The input anode of photoelectric isolated chip T3 is connected with digital electric signal Vcc by resistance R 7, the input cathode of photoelectric isolated chip T3 is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip T3 is connected with the grid of P type metal-oxide-semiconductor K3 and an end of resistance R 8 simultaneously, the negative pole of output end of photoelectric isolated chip T3 is connected with earth signal by resistance R 9, source class while and the electric signal Vp of P type metal-oxide-semiconductor K3, the negative pole of diode D3, and the other end of resistance R 8 is connected, the drain electrode of P type metal-oxide-semiconductor K3 is connected horsepower output control signal P2 with the drain electrode of N type metal-oxide-semiconductor K4.The input anode of photoelectric isolated chip T4 is connected with digital electric signal Vcc by resistance R 10, the input cathode of photoelectric isolated chip T4 is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip T4 is connected with electric signal Vp by resistance R 11, the negative pole of output end of photoelectric isolated chip T4 is connected with the grid of N type metal-oxide-semiconductor K4 and an end of resistance R 12 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K4, the positive pole of diode D4, and the other end of resistance R 12 is connected, the drain electrode of N type metal-oxide-semiconductor K4 is connected horsepower output control signal P2 with the drain electrode of P type metal-oxide-semiconductor K3.
When above-mentioned first motor-drive circuit is worked, when Ctrl1 control metal-oxide-semiconductor K1 and K4 conducting, and Ctrl2 control metal-oxide-semiconductor K2 and K3 by the time, horsepower output control signal P1 is a high level, horsepower output control signal P2 is a low level, is just changeing thereby control first motor M 1; When Ctrl1 control metal-oxide-semiconductor K1 and K4 end, and when Ctrl2 control metal-oxide-semiconductor K2 and K3 conducting, horsepower output control signal P1 is a low level, and horsepower output control signal P2 is a high level, thereby controls 1 counter-rotating of first motor M; When Ctrl1 control metal-oxide-semiconductor K1 and K4 end, and Ctrl2 control metal-oxide-semiconductor K2 and K3 by the time, first motor M 1 is not changeed; When Ctrl1 control metal-oxide-semiconductor K1 and K4 conducting, and when Ctrl2 control metal-oxide-semiconductor K2 and K3 conducting, the first motor-drive circuit short circuit, the microprocessing unit of band bus communication module is forbidden the appearance of this kind situation when sending digital controlled signal Ctrl1 and Ctrl2.
The first electrical fault diagnostic circuit, receive the power control signal P1 of first motor-drive circuit output and reference voltage V 1 and V2 respectively relatively after, convert comparative result to output digital signal S1 and S2 to microprocessing unit with bus communication module.The circuit theory of the first electrical fault diagnostic circuit is made up of two voltage comparator A1 and A2, photoelectric isolated chip T5 and T6, resistance R H13～R18 and resistance R H1, RL1, RH2 and RL2 as shown in Figure 3.Voltage comparator A1 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A1 is connected with power control signal P1, the in-phase input end of voltage comparator A1 is connected with electric signal Vp by resistance R H1, the in-phase input end of voltage comparator A1 is connected with earth signal by resistance R L1 simultaneously, the mouth of voltage comparator A1 is connected with electric signal Vp by resistance R 13, the mouth of voltage comparator A1 is with being connected with the input cathode of photoelectric isolated chip T5, the input anode of photoelectric isolated chip T5 is connected with electric signal Vp by resistance R 14, photoelectric isolated chip T5 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T5 is connected with digital electric signal Vcc by resistance R 15, export digital signal S1 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A1 is V1.Voltage comparator A2 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A2 is connected with power control signal P1, the in-phase input end of voltage comparator A2 is connected with electric signal Vp by resistance R H2, the in-phase input end of voltage comparator A1 is connected with earth signal by resistance R L2 simultaneously, the mouth of voltage comparator A2 is connected with electric signal Vp by resistance R 16, the mouth of voltage comparator A2 is with being connected with the input cathode of photoelectric isolated chip T6, the input anode of photoelectric isolated chip T6 is connected with electric signal Vp by resistance R 17, photoelectric isolated chip T6 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T6 is connected with digital electric signal Vcc by resistance R 18, export digital signal S2 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A2 is V2.
When the above-mentioned first electrical fault diagnostic circuit is worked, when first motor M 1 is just being changeed, motor is carried out trouble diagnosing, during first motor M, 1 trouble free, the magnitude of voltage of power control signal P1 is between voltage V1 and the voltage V2, when short trouble appears in first motor M 1, the magnitude of voltage of power control signal P1 is all lower than voltage V1 and voltage V2, when open circuit fault appears in first motor M 1, the magnitude of voltage of power control signal P1 is all higher than voltage V1 and voltage V2, thereby under three kinds of states, export different digital signal S1 and S2 to microprocessing unit, realize trouble diagnosing first motor M 1 with bus communication module.
Second motor-drive circuit, digital controlled signal Ctrl3 and Ctrl4 horsepower output control signal P3 and P4 according to the microprocessing unit of band bus communication module is exported control the rotating of second motor M 2 in the driven rearview mirrors with realization.The circuit theory of second motor-drive circuit is made up of P type metal-oxide-semiconductor K5 and K7, N type metal-oxide-semiconductor K6 and K8, photoelectric isolated chip T7～T12, diode D5～D8 and resistance R 21～R32 as shown in Figure 4.The input anode of photoelectric isolated chip T7 is connected with digital electric signal Vcc by resistance R 21, the input cathode of photoelectric isolated chip T7 is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip T7 is connected with the grid of P type metal-oxide-semiconductor K5 and an end of resistance R 22 simultaneously, the negative pole of output end of photoelectric isolated chip T7 is connected with earth signal by resistance R 23, source class while and the electric signal Vp of P type metal-oxide-semiconductor K5, the negative pole of diode D5, and the other end of resistance R 22 is connected, the drain electrode of P type metal-oxide-semiconductor K5 is connected horsepower output control signal P3 with the drain electrode of N type metal-oxide-semiconductor K6.The input anode of photoelectric isolated chip T8 is connected with digital electric signal Vcc by resistance R 24, the input cathode of photoelectric isolated chip T8 is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip T7 is connected with electric signal Vp by resistance R 25, the negative pole of output end of photoelectric isolated chip T8 is connected with the grid of N type metal-oxide-semiconductor K6 and an end of resistance R 26 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K5, the positive pole of diode D6, and the other end of resistance R 26 is connected, the drain electrode of N type metal-oxide-semiconductor K6 is connected horsepower output control signal P3 with the drain electrode of P type metal-oxide-semiconductor K5.The input anode of photoelectric isolated chip T9 is connected with digital electric signal Vcc by resistance R 27, the input cathode of photoelectric isolated chip T9 is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip T9 is connected with the grid of P type metal-oxide-semiconductor K7 and an end of resistance R 28 simultaneously, the negative pole of output end of photoelectric isolated chip T9 is connected with earth signal by resistance R 29, source class while and the electric signal Vp of P type metal-oxide-semiconductor K7, the negative pole of diode D7, and the other end of resistance R 28 is connected, the drain electrode of P type metal-oxide-semiconductor K7 is connected horsepower output control signal P4 with the drain electrode of N type metal-oxide-semiconductor K8.The input anode of photoelectric isolated chip T10 is connected with digital electric signal Vcc by resistance R 30, the input cathode of photoelectric isolated chip T10 is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip T10 is connected with electric signal Vp by resistance R 31, the negative pole of output end of photoelectric isolated chip T10 is connected with the grid of N type metal-oxide-semiconductor K8 and an end of resistance R 32 simultaneously, source class while and the earth signal of N type metal-oxide-semiconductor K8, the positive pole of diode D8, and the other end of resistance R 32 is connected, the drain electrode of N type metal-oxide-semiconductor K8 is connected horsepower output control signal P4 with the drain electrode of P type metal-oxide-semiconductor K7.
When above-mentioned second motor-drive circuit is worked, when Ctrl3 control metal-oxide-semiconductor K5 and K8 conducting, and Ctrl4 control metal-oxide-semiconductor K6 and K7 by the time, horsepower output control signal P3 is a high level, horsepower output control signal P4 is a low level, is just changeing thereby control second motor M 2; When Ctrl3 control metal-oxide-semiconductor K5 and K8 end, and when Ctrl4 control metal-oxide-semiconductor K6 and K7 conducting, horsepower output control signal P3 is a low level, and horsepower output control signal P4 is a high level, thereby controls 2 counter-rotatings of second motor M; When Ctrl3 control metal-oxide-semiconductor K5 and K8 end, and Ctrl4 control metal-oxide-semiconductor K6 and K7 by the time, second motor M 2 is not changeed; When Ctrl3 control metal-oxide-semiconductor K5 and K8 conducting, and when Ctrl4 control metal-oxide-semiconductor K6 and K7 conducting, the second motor-drive circuit short circuit, the microprocessing unit of band bus communication module is forbidden the appearance of this kind situation when sending digital controlled signal Ctrl3 and Ctrl4.
The second electrical fault diagnostic circuit, receive the power control signal P3 of second motor-drive circuit output and reference voltage V 3 and V4 respectively relatively after, convert comparative result to output digital signal S3 and S4 to microprocessing unit with bus communication module.The circuit theory of the second electrical fault diagnostic circuit is made up of two voltage comparator A3 and A4, photoelectric isolated chip T11 and T12, resistance R H33～R38 and resistance R H3, RL3, RH4 and RL4 as shown in Figure 5.Voltage comparator A3 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A3 is connected with power control signal P3, the in-phase input end of voltage comparator A3 is connected with electric signal Vp by resistance R H3, the in-phase input end of voltage comparator A3 is connected with earth signal by resistance R L3 simultaneously, the mouth of voltage comparator A3 is connected with electric signal Vp by resistance R 33, the mouth of voltage comparator A3 is with being connected with the input cathode of photoelectric isolated chip T11, the input anode of photoelectric isolated chip T11 is connected with electric signal Vp by resistance R 34, photoelectric isolated chip T11 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T11 is connected with digital electric signal Vcc by resistance R 35, export digital signal S3 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A3 is V3.Voltage comparator A4 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A4 is connected with power control signal P3, the in-phase input end of voltage comparator A4 is connected with electric signal Vp by resistance R H4, the in-phase input end of voltage comparator A3 is connected with earth signal by resistance R L4 simultaneously, the mouth of voltage comparator A4 is connected with electric signal Vp by resistance R 36, the mouth of voltage comparator A4 is with being connected with the input cathode of photoelectric isolated chip T12, the input anode of photoelectric isolated chip T12 is connected with electric signal Vp by resistance R 37, photoelectric isolated chip T12 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T12 is connected with digital electric signal Vcc by resistance R 38, export digital signal S4 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A4 is V4.
When the above-mentioned second electrical fault diagnostic circuit is worked, when second motor M 2 is just being changeed, motor is carried out trouble diagnosing, during second motor M, 2 troubles free, the magnitude of voltage of power control signal P3 is between voltage V3 and the voltage V4, when short trouble appears in second motor M 2, the magnitude of voltage of power control signal P3 is all lower than voltage V3 and voltage V4, when open circuit fault appears in second motor M 2, the magnitude of voltage of power control signal P3 is all higher than voltage V3 and voltage V4, thereby under three kinds of states, export different digital signal S3 and S4 to microprocessing unit, realize trouble diagnosing second motor M 2 with bus communication module.
Heater drive circuit, the digital controlled signal Ctrl5 horsepower output control signal P5 according to the microprocessing unit of band bus communication module is exported carries out the control of power power supply break-make with realization to the heater strip R in the driven rearview mirrors.The circuit theory of heater circuit is made up of P type metal-oxide-semiconductor K9, photoelectric isolated chip T13, diode D9 and resistance R 41, R42 and R43 as shown in Figure 6.The input anode of photoelectric isolated chip T13 is connected with digital electric signal Vcc by resistance R 41, the input cathode of photoelectric isolated chip T13 is connected with digital controlled signal Ctrl5, the output head anode of photoelectric isolated chip T13 is connected with the grid of P type metal-oxide-semiconductor K9 and an end of resistance R 42 simultaneously, the negative pole of output end of photoelectric isolated chip T13 is connected with earth signal by resistance R 43, source class while and the electric signal Vp of P type metal-oxide-semiconductor K9, the negative pole of diode D9, and the other end of resistance R 42 is connected the drain electrode horsepower output control signal P5 of P type metal-oxide-semiconductor K9.
The heater failure diagnostic circuit, be used to receive the power control signal P5 of heater drive circuit output and reference voltage V 5 and V6 respectively relatively after, convert comparative result to output digital signal S5 and S6 to microprocessing unit with bus communication module.The circuit theory of heater failure diagnostic circuit is made up of two voltage comparator A5 and A6, photoelectric isolated chip T13 and T14, resistance R H44～R49 and resistance R H5, RL5, RH6 and RL6 as shown in Figure 7.Voltage comparator A5 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A5 is connected with power control signal P5, the in-phase input end of voltage comparator A5 is connected with electric signal Vp by resistance R H5, the in-phase input end of voltage comparator A5 is connected with earth signal by resistance R L5 simultaneously, the mouth of voltage comparator A5 is connected with electric signal Vp by resistance R 44, the mouth of voltage comparator A4 is with being connected with the input cathode of photoelectric isolated chip T13, the input anode of photoelectric isolated chip T13 is connected with electric signal Vp by resistance R 45, photoelectric isolated chip T13 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T13 is connected with digital electric signal Vcc by resistance R 46, export digital signal S5 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A5 is V5.Voltage comparator A6 is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator A6 is connected with power control signal P5, the in-phase input end of voltage comparator A6 is connected with electric signal Vp by resistance R H6, the in-phase input end of voltage comparator A6 is connected with earth signal by resistance R L6 simultaneously, the mouth of voltage comparator A6 is connected with electric signal Vp by resistance R 47, the mouth of voltage comparator A6 is with being connected with the input cathode of photoelectric isolated chip T14, the input anode of photoelectric isolated chip T14 is connected with electric signal Vp by resistance R 48, photoelectric isolated chip T14 negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip T14 is connected with digital electric signal Vcc by resistance R 49, export digital signal S6 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator A6 is V6.
When above-mentioned heater failure diagnostic circuit is worked, when working, heater strip R carries out trouble diagnosing, during heater strip R trouble free, the magnitude of voltage of power control signal P5 is between voltage V5 and the voltage V6, when short trouble appears in heater strip R, the magnitude of voltage of power control signal P5 is all lower than voltage V5 and voltage V6, when open circuit fault appears in heater strip R, the magnitude of voltage of power control signal P5 is all higher than voltage V5 and voltage V6, thereby under three kinds of states, export different digital signal S5 and S6 to microprocessing unit, realize trouble diagnosing heater strip R with bus communication module.
Driven rearview mirrors is used for rotating up and down according to power control signal P1 and P2 adjustment minute surface, adjusts the minute surface left-right rotation according to control power system signal P3 and P4, realizes the heating of minute surface is defrosted according to power control signal P5.But driven rearview mirrors is made up of two rotatings, first motor M 1 and M2 and heater strip R.The two ends of first motor M 1 are connected with P2 with the power control signal P1 of first motor-drive circuit output respectively, the two ends of second motor M 2 are connected with P4 with the power control signal P3 of second motor-drive circuit output respectively, and the two ends of heater strip R are connected with earth signal with the power control signal P5 of heater drive circuit output respectively.
The vehicle electric rear-view mirror control circuit that has bus interface of the present invention is used to use the automobile of bussing technique, is particularly useful for using the automobile of CAN bus, LIN bussing technique, can be made into the interface circuit between electromotion rearview mirror of car and the Vehicle Body Bus.
In one embodiment of the present of invention, it is that the metal-oxide-semiconductor of IRF9Z34 is realized its function that P type metal-oxide-semiconductor K1, K3, K5, K7 and K9 select model for use, is produced by US business's international rectifier Company Limited by Shares; It is that the metal-oxide-semiconductor of IRF3206 model is realized its function that N type metal-oxide-semiconductor is selected signal for use, is produced by US business's international rectifier Company Limited by Shares; Voltage comparator A1～A6 selects for use LM393 model chip to realize its function, is produced by PHILIPS Co.; Diode D1～D9 selects for use 1N4001 model diode to realize its function, is produced by ST Microelectronics; Photoelectric isolated chip selects for use TLP521 model chip to realize its function, is produced by Toshiba Corp; Resistance R 1～R18, R21～R38, R42～R49 are conventional, electric-resistance; It is the micro controller system of MC68HC908QL4 and the LIN transceiving chip that model is MC33399 that the microprocessing unit of band bus communication module is selected the model of band LIN function for use, produces by Freescale company; Bus interface is a common interface that patches, and is used for being connected with communication bus.
Claims (1)
1, a kind of vehicle electric rear-view mirror control circuit that has bus interface is characterized in that, this control circuit comprises:
Bus interface is used to make the microprocessing unit and the communication bus of band bus communication module to set up correspondence;
The microprocessing unit of band bus communication module, be used for reading control message from communication bus, output digital controlled signal Ctrl1 and Ctrl2 to the first motor-drive circuit, output digital controlled signal Ctrl3 and Ctrl4 to the second motor-drive circuit, output digital controlled signal Ctrl5 is to heater drive circuit, and read digital signal (S1 and S2) from the first electrical fault diagnostic circuit, read digital signal (S3 and S4) from the second electrical fault diagnostic circuit, read digital signal (S5 and S6) from the heater failure diagnostic circuit, (S1～S6) reads the result to first motor (M1) according to above-mentioned digital signal, second motor (M2) and temperature booster (R) carry out fault type and judge, judged result is carried out the message frame coding, according to the automobile bus agreement level signal of message frame coding is changed, change over signal is sent to bus interface;
First motor-drive circuit, be used for level height and break-make according to above-mentioned digital controlled signal Ctrl1 and Ctrl2 power controlling control signal (P1 and P2), realizing the rotating control to first motor (M1) in the driven rearview mirrors, first motor-drive circuit is by P type metal-oxide-semiconductor (K1 and K3), N type metal-oxide-semiconductor (K2 and K4), photoelectric isolated chip (T1～T4), diode (D1～D4) and resistance (R1～R12) form; The input anode of photoelectric isolated chip (T1) is connected with digital electric signal Vcc by resistance (R1), the input cathode of photoelectric isolated chip (T1) is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip (T1) is connected with the grid of P type metal-oxide-semiconductor (K1) and an end of resistance (R2) simultaneously, the negative pole of output end of photoelectric isolated chip (T1) is connected with earth signal by resistance (R3), the source class while and the electric signal Vp of P type metal-oxide-semiconductor (K1), the negative pole of diode (D1), and the other end of resistance (R2) is connected, the drain electrode of P type metal-oxide-semiconductor (K1) is connected with the drain electrode of N type metal-oxide-semiconductor (K2), horsepower output control signal (P1); The input anode of photoelectric isolated chip (T2) is connected with digital electric signal Vcc by resistance (R4), the input cathode of photoelectric isolated chip (T2) is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip (T1) is connected with electric signal Vp by resistance (R5), the negative pole of output end of photoelectric isolated chip (T2) is connected with the grid of N type metal-oxide-semiconductor (K2) and an end of resistance (R6) simultaneously, the source class while and the earth signal of N type metal-oxide-semiconductor (K1), the positive pole of diode (D2), and the other end of resistance (R6) is connected, the drain electrode of N type metal-oxide-semiconductor (K2) is connected with the drain electrode of P type metal-oxide-semiconductor (K1), horsepower output control signal P1; The input anode of photoelectric isolated chip (T3) is connected with digital electric signal Vcc by resistance (R7), the input cathode of photoelectric isolated chip (T3) is connected with digital controlled signal Ctrl2, the output head anode of photoelectric isolated chip (T3) is connected with the grid of P type metal-oxide-semiconductor (K3) and an end of resistance (R8) simultaneously, the negative pole of output end of photoelectric isolated chip (T3) is connected with earth signal by resistance (R9), the source class while and the electric signal Vp of P type metal-oxide-semiconductor (K3), the negative pole of diode (D3), and the other end of resistance (R8) is connected, the drain electrode of P type metal-oxide-semiconductor (K3) is connected with the drain electrode of N type metal-oxide-semiconductor (K4), horsepower output control signal (P2); The input anode of photoelectric isolated chip (T4) is connected with digital electric signal Vcc by resistance (R10), the input cathode of photoelectric isolated chip (T4) is connected with digital controlled signal Ctrl1, the output head anode of photoelectric isolated chip (T4) is connected with electric signal Vp by resistance (R11), the negative pole of output end of photoelectric isolated chip (T4) is connected with the grid of N type metal-oxide-semiconductor (K4) and an end of resistance (R12) simultaneously, the source class while and the earth signal of N type metal-oxide-semiconductor (K4), the positive pole of diode (D4), and the other end of resistance (R12) is connected, the drain electrode of N type metal-oxide-semiconductor (K4) is connected with the drain electrode of P type metal-oxide-semiconductor (K3), horsepower output control signal P2;
The first electrical fault diagnostic circuit, receive above-mentioned power control signal P1, with reference voltage V 1 and V2 respectively relatively after, convert comparative result to output digital signal (S1 and S2) to the microprocessing unit with bus communication module, (form by RH13～R18) and resistance (RH1, RL1, RH2 and RL2) by two voltage comparators (A1 and A2), photoelectric isolated chip (T5 and T6), resistance for the first electrical fault diagnostic circuit; Voltage comparator (A1) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A1) is connected with power control signal P1, the in-phase input end of voltage comparator (A1) is connected with electric signal Vp by resistance (RH1), the in-phase input end of voltage comparator (A1) is connected with earth signal by resistance (RL1) simultaneously, the mouth of voltage comparator (A1) is connected with electric signal Vp by resistance (R13), the mouth of voltage comparator (A1) is with being connected with the input cathode of photoelectric isolated chip (T5), the input anode of photoelectric isolated chip (T5) is connected with electric signal Vp by resistance (R14), the negative pole of output end of photoelectric isolated chip (T5) is connected with signal digitally, the output head anode of photoelectric isolated chip (T5) is connected with digital electric signal Vcc by resistance (R15), export digital signal S1 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A1) is V1; Voltage comparator (A2) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A2) is connected with power control signal P1, the in-phase input end of voltage comparator (A2) is connected with electric signal Vp by resistance (RH2), the in-phase input end of voltage comparator (A1) is connected with earth signal by resistance (RL2) simultaneously, the mouth of voltage comparator (A2) is connected with electric signal Vp by resistance (R16), the mouth of voltage comparator (A2) is with being connected with the input cathode of photoelectric isolated chip () T6, the input anode of photoelectric isolated chip (T6) is connected with electric signal Vp by resistance (R17), photoelectric isolated chip (T6) negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip (T6) is connected with digital electric signal Vcc by resistance (R18), export digital signal S2 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A2) is V2; Described second motor-drive circuit, be used for according to above-mentioned digital controlled signal Ctrl3 and Ctrl4, the level height and the break-make of power controlling control signal (P3 and P4), realizing the rotating control to second motor (M2) in the driven rearview mirrors, second motor-drive circuit is by P type metal-oxide-semiconductor (K5 and K7), N type metal-oxide-semiconductor (K6 and K8), photoelectric isolated chip (T7～T12), diode (D5～D8) and resistance (R21～R32) form; The input anode of photoelectric isolated chip (T7) is connected with digital electric signal Vcc by resistance (R21), the input cathode of photoelectric isolated chip (T7) is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip (T7) is connected with the grid of P type metal-oxide-semiconductor (K5) and an end of resistance (R22) simultaneously, the negative pole of output end of photoelectric isolated chip (T7) is connected with earth signal by resistance (R23), the source class while and the electric signal Vp of P type metal-oxide-semiconductor (K5), the negative pole of diode (D5), and the other end of resistance (R22) is connected, the drain electrode of P type metal-oxide-semiconductor (K5) is connected with the drain electrode of N type metal-oxide-semiconductor (K6), horsepower output control signal (P3); The input anode of photoelectric isolated chip (T8) is connected with digital electric signal Vcc by resistance (R24), the input cathode of photoelectric isolated chip (T8) is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip (T7) is connected with electric signal Vp by resistance (R25), the negative pole of output end of photoelectric isolated chip (T8) is connected with the grid of N type metal-oxide-semiconductor (K6) and an end of resistance (R26) simultaneously, the source class while and the earth signal of N type metal-oxide-semiconductor (K5), the positive pole of diode (D6), and the other end of resistance (R26) is connected, the drain electrode of N type metal-oxide-semiconductor (K6) is connected with the drain electrode of P type metal-oxide-semiconductor (K5), horsepower output control signal P3; The input anode of photoelectric isolated chip (T9) is connected with digital electric signal Vcc by resistance (R27), the input cathode of photoelectric isolated chip (T9) is connected with digital controlled signal Ctrl4, the output head anode of photoelectric isolated chip (T9) is connected with the grid of P type metal-oxide-semiconductor (K7) and an end of resistance (R28) simultaneously, the negative pole of output end of photoelectric isolated chip (T9) is connected with earth signal by resistance (R29), the source class while and the electric signal Vp of P type metal-oxide-semiconductor (K7), the negative pole of diode (D7), and the other end of resistance (R28) is connected, the drain electrode of P type metal-oxide-semiconductor (K7) is connected with the drain electrode of N type metal-oxide-semiconductor (K8), horsepower output control signal P4; The input anode of photoelectric isolated chip (T10) is connected with digital electric signal Vcc by resistance (R30), the input cathode of photoelectric isolated chip (T10) is connected with digital controlled signal Ctrl3, the output head anode of photoelectric isolated chip (T10) is connected with electric signal Vp by resistance (R31), the negative pole of output end of photoelectric isolated chip (T10) is connected with the grid of N type metal-oxide-semiconductor (K8) and an end of resistance (R32) simultaneously, the source class while and the earth signal of N type metal-oxide-semiconductor (K8), the positive pole of diode (D8), and the other end of resistance (R32) is connected, the drain electrode of N type metal-oxide-semiconductor (K8) is connected with the drain electrode of P type metal-oxide-semiconductor (K7), horsepower output control signal P4;
The second electrical fault diagnostic circuit, be used to receive above-mentioned power control signal P3, with reference voltage V 3 and V4 respectively relatively after, convert comparative result to microprocessing unit that digital signal S3 and S4 export the band bus communication module to, (form by RH33～R38) and resistance (RH3, RL3, RH4 and RL4) by two voltage comparators (A3 and A4), photoelectric isolated chip (T11 and T12), resistance for the second electrical fault diagnostic circuit; Voltage comparator (A3) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A3) is connected with power control signal P3, the in-phase input end of voltage comparator (A3) is connected with electric signal Vp by resistance R H3, the in-phase input end of voltage comparator (A3) is connected with earth signal by resistance (RL3) simultaneously, the mouth of voltage comparator (A3) is connected with electric signal Vp by resistance (R33), the mouth of voltage comparator (A3) is with being connected with the input cathode of photoelectric isolated chip (T11), the input anode of photoelectric isolated chip (T11) is connected with electric signal Vp by resistance R 34, photoelectric isolated chip (T11) negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip (T11) is connected with digital electric signal Vcc by resistance (R35), export digital signal S3 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A3) is V3; Voltage comparator (A4) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A4) is connected with power control signal P3, the in-phase input end of voltage comparator (A4) is connected with electric signal Vp by resistance R H4, the in-phase input end of voltage comparator (A3) is connected with earth signal by resistance (RL4) simultaneously, the mouth of voltage comparator (A4) is connected with electric signal Vp by resistance (R36), the mouth of voltage comparator (A4) is with being connected with the input cathode of photoelectric isolated chip (T12), the input anode of photoelectric isolated chip (T12) is connected with electric signal Vp by resistance (R37), photoelectric isolated chip (T12) negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip (T12) is connected with digital electric signal Vcc by resistance (R38), export digital signal S4 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A4) is V4;
Heater drive circuit, be used for break-make according to above-mentioned digital controlled signal Ctrl5 power controlling control signal P5, to realize that the heater strip in the driven rearview mirrors (R) is carried out the control of power power supply break-make, heater drive circuit is made up of P type metal-oxide-semiconductor (K9), photoelectric isolated chip (T13), diode (D9) and resistance (R41, R42 and R43); The input anode of photoelectric isolated chip (T13) is connected with digital electric signal Vcc by resistance (R41), the input cathode of photoelectric isolated chip (T13) is connected with digital controlled signal Ctrl5, the output head anode of photoelectric isolated chip (T13) is connected with the grid of P type metal-oxide-semiconductor (K9) and an end of resistance (R42) simultaneously, the negative pole of output end of photoelectric isolated chip (T13) is connected with earth signal by resistance (R43), source class while and the electric signal Vp of P type MOS (K9), the negative pole of diode (D9), and the other end of resistance (R42) is connected the drain electrode horsepower output control signal P5 of P type metal-oxide-semiconductor (K9);
The heater failure diagnostic circuit, be used to receive above-mentioned power control signal P5, with reference voltage V 5 and V6 respectively relatively after, convert comparative result to microprocessing unit that digital signal S5 and S6 export the band bus communication module to, (form by RH44～R49) and resistance (RH5, RL5, RH6 and RL6) by two voltage comparators (A5 and A6), photoelectric isolated chip (T13 and T14), resistance for the heater failure diagnostic circuit; Voltage comparator (A5) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A5) is connected with power control signal P5, the in-phase input end of voltage comparator (A5) is connected with electric signal Vp by resistance (RH5), the in-phase input end of voltage comparator (A5) is connected with earth signal by resistance (RL5) simultaneously, the mouth of voltage comparator (A5) is connected with electric signal Vp by resistance (R44), the mouth of voltage comparator (A4) is with being connected with the input cathode of photoelectric isolated chip (T13), the input anode of photoelectric isolated chip (T13) is connected with electric signal Vp by resistance (R45), photoelectric isolated chip (T13) negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip (T13) is connected with digital electric signal Vcc by resistance (R46), export digital signal S5 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A5) is V5; Voltage comparator (A6) is by electric signal Vp and earth signal power supply, the inverting input of voltage comparator (A6) is connected with power control signal P5, the in-phase input end of voltage comparator (A6) is connected with electric signal Vp by resistance (RH6), the in-phase input end of voltage comparator (A6) is connected with earth signal by resistance (RL6) simultaneously, the mouth of voltage comparator A6 is connected with electric signal Vp by resistance (R47), the mouth of voltage comparator (A6) is with being connected with the input cathode of photoelectric isolated chip (T14), the input anode of photoelectric isolated chip (T14) is connected with electric signal Vp by resistance (R48), photoelectric isolated chip (T14) negative pole of output end be connected with signal digitally, the output head anode of photoelectric isolated chip (T14) is connected with digital electric signal Vcc by resistance (R49), export digital signal S6 simultaneously to the microprocessing unit with bus communication module, the voltage of the in-phase input end of voltage comparator (A6) is V6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117174A CN100579830C (en) | 2008-07-25 | 2008-07-25 | Vehicle electric rear-view mirror control circuit with bus connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117174A CN100579830C (en) | 2008-07-25 | 2008-07-25 | Vehicle electric rear-view mirror control circuit with bus connector |
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| Publication Number | Publication Date |
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| CN101323282A true CN101323282A (en) | 2008-12-17 |
| CN100579830C CN100579830C (en) | 2010-01-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064401A (en) * | 2012-12-12 | 2013-04-24 | 潍柴动力股份有限公司 | Air inlet heating system fault diagnosis method, controller and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064401A (en) * | 2012-12-12 | 2013-04-24 | 潍柴动力股份有限公司 | Air inlet heating system fault diagnosis method, controller and system |
| CN103064401B (en) * | 2012-12-12 | 2014-10-01 | 潍柴动力股份有限公司 | Air inlet heating system fault diagnosis method, controller and system |
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| CN100579830C (en) | 2010-01-13 |
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