Summary of the invention
One of the purpose of this utility model is for solving: because of the transposing chaufeur causes, need the frequent problem of adjusting the back mirror visual angle.A kind of back mirror control setup with memory function is provided, and it can store different drivers' visual angle location information, the control set for adjusting of automatic compensation rear-vision mirror face angle.
Two of the purpose of this utility model is for solving: the problem that need regulate back mirror during the chaufeur reversing.Provide a kind of in when reversing, this control set for adjusting after receiving astern signal, angle that can the automatically regulating rear-vision mirror face, when satisfying reversing, driver's maximum sight line zone.When cruising makes, the control set for adjusting that can reset rapidly.
In order to solve above-mentioned two technical matterss, the utility model is achieved through the following technical solutions: a kind of rear-vision mirror face angular adjustment control setup with memory function comprises:
One power circuit 1 is used for the voltage of automotive battery is converted into the required operating voltage of control setup system;
One switch disable circuit 2 is used to forbid or allow the angle of regulating control rear-vision mirror face;
One astern signal acceptor circuit 3 is used for carrying astern signal to microprocessor 5;
One microprocessor 5 is used for the various digital signals that receive are compared processing, and the motors in the deflector 9 of rotating band memory function rotate, to reach the control light deflector up and down or the purpose of side-to-side movement;
One motor-drive circuit 6, according to the output command of microprocessor 5, the motor action in the deflector of rotating band memory function 9, realize to minute surface up and down or left and right adjusting;
One position signal A/D change-over circuit 7 is used to detect the voltage location signal of deflector 9 outputs of band memory function, after A/D transforms, is transported to microprocessor 5;
One current signal A/D change-over circuit 8 is used to detect the current signal of deflector 9 outputs of band memory function, is transported to microprocessor 5 after A/D transforms;
The deflector 9 of one band memory function, be used to realize the light deflector minute surface up and down or side-to-side movement, output and mirror position be magnitude of voltage one to one;
Described power circuit 1 connects the power input of microprocessor 5; Switch disable circuit 2 connects the data input pin of microprocessor 5; Astern signal acceptor circuit 3 connects the data input pin of microprocessor 5; The input end of position signal A/D change-over circuit 7 and current signal A/D change-over circuit 8 is connected with the mouth of the deflector of band memory function, and the mouth of position signal A/D change-over circuit 7 and current signal A/D change-over circuit 8 is connected with the data input pin of microprocessor 5; The mouth of described microprocessor 5 is connected with motor-drive circuit 6; It is characterized in that: the data input pin of described microprocessor 5 is connected with minute surface control circuit 4.
Described minute surface control circuit 4 is by E
2Prom memory, I
2C bus, pull-up resistor R15, R16 constitute; Described E
2Prom memory is followed I
2The agreement of C bus, its SDA, SCL data line be the I by pull-up resistor and microprocessor 5 respectively
2C bus port RXD, TXD link to each other, and WC, CE0, EC1, CE2 port ground connection.
Power circuit 1 is made up of power supply on vehicle, power supply high tension protection circuit, electric source filter circuit, reverse protection circuit and three-terminal voltage-stabilizing integration module, described positive source is connected to the negative pole of stabilivolt D5 and the input end of three terminal regulator U5, the positive ground of stabilivolt D5 through diode D4 and resistance R 5; Filter capacitor C14 and C1 are connected the two ends of stabilivolt D5, and the mouth of process three terminal regulator U5 and ground are held and met capacitor C 15 and C7 again, get back to the ground end of power supply, and the Vcc pin of power output end and microprocessor 5 links to each other.
Described switch disable circuit 2 is the switch connections by the control setup of operating panel face, be connected to the base stage of aerotron Q1 through current-limiting resistance R10, the collecting electrode of aerotron Q1 is connected with power supply, and be connected to the P1.0 port of microprocessor 5, filter capacitor C8 is connected between base stage and the emitter, the grounded emitter of aerotron Q1.
The input end of astern signal acceptor circuit 3 is introduced astern signal, and the I/O interface that is connected to microprocessor 5 connects; Astern signal acceptor circuit 3 is to be introduced by input end (reverse), behind divider resistance R13, R14, again through the filter of filtering capacitor C 10, C11 and current-limiting resistance R12 formation, is linked into the P0.1 pin of microprocessor 5.
Motor-drive circuit 6 is made up of two groups of single-pole double throw (SPDT) relays, transistor amplifier and motor high interference pulse absorption circuit and relay protection circuit; Wherein, the base stage of aerotron Q2 is connected to the P2.7 pin of the I/O mouth of microprocessor 5 by resistance R 17, the collecting electrode of aerotron Q2 drives the coil of relay, and the electrical motor of the mouth of relay and one group of horizontal or vertical actuating unit of the deflector 9 of band memory function is connected, and realizes the control that the deflector 9 of band memory function is rotated forward or backwards; The base stage of aerotron Q3 is connected to the P2.6 pin of the I/O mouth of microprocessor 5 by resistance R 11, the collecting electrode of aerotron Q3 drives the coil of relay, and the electrical motor of one group of horizontal or vertical actuating unit of the deflector 9 of the band memory function of the mouth of relay connects, and realizes to the deflector 9 of band memory function oppositely or the control that is rotated in the forward.
Two groups of motor-drive circuits 6 are controlled the horizontal actuating unit and vertical actuating unit of the deflector 9 of band memory function respectively, just can realize the adjusting to the light deflector minute surface.
Position signal A/D change-over circuit 7 is made up of the P0.0 pin sampling end of current-limiting protection resistance R 9, microprocessor 5 and the deflector 9 of band memory function; The end of current-limiting resistance R9 connects the P0.0 pin of microprocessor 5, the position signal mouth of the deflector 9 of other end connecting band memory function; The position sampling circuit provides the signal of the needed minute surface of this control setup position, and this signal is that the position signal end of deflector 9 from the band memory function directly obtains, and is input to the P0.0 interface through current-limiting resistance R9.
Current signal A/D change-over circuit 8 is made up of integrated operational amplifier U6, input resistance R7, feedback resistance R6, sampling resistor R8; The end of integrated operational amplifier U6 is connected to the A/D thief hatch " current " of microprocessor 5 by sampling resistor R8; The mouth of integrated operational amplifier U6 is connected to the P0.3 pin of microprocessor 5, i.e. " current out " interface.
The utility model has the advantages that: (1) both can adjust the angle of rear-vision mirror face quickly and easily; The rear-vision mirror face angle information that different drivers can be set is stored in the control setup memory device as required by the minute surface control panel again, makes minute surface can return to the position of previous setting exactly.When (2) moveing backward, the angle of automatically regulating rear-vision mirror face need not additional operations, can make mirror angle be adjusted to the position that is fit to the reversing visual field; Otherwise (3) automatically reset.The utility model makes and drives to experience more comfortable and safety for the driver provides operation interface easily.
Specific embodiments
Below in conjunction with accompanying drawing, the utility model is specifically described:
Referring to Fig. 1 functional block diagram, a kind of rear-vision mirror face angular adjustment control setup with memory function described in the utility model is made of the deflector 9 of power circuit 1, switch disable circuit 2, astern signal acceptor circuit 3, minute surface control circuit 4, microprocessor 5, motor-drive circuit 6, position signal A/D change-over circuit 7, current signal A/D change-over circuit 8 and two groups of band memory functions.
The deflector 9 of band memory function is provided with two groups of actuating units, and one group is horizontal actuating unit, and another group is vertical actuating unit, and the schematic diagram of work drive motor shown in Figure 2 is wherein one group.Corresponding therewith, there are two groups of motor-drive circuits 6 to control the horizontal actuating unit and vertical actuating unit of the deflector of this band memory function respectively.The deflector 9 of the utility model band memory function is made up of motor-driven structure and position signal sensing module.Described motor-driven structure is made of motor 91, turbine 92, worm screw 93.Turbine 92 is connected with the output shaft of motor 91, and worm screw 93 cooperates with turbine 92, and turbine 92 is fixed on the rear portion of rear-vision mirror face 20.The position signal sensing module is made of film slide rheostat 94 and contact 95, and described contact 95 constitutes contact relation, the contact 95 of the mouth connection location sensing module of described worm screw 93 with film slide rheostat 94.Motor 91 can move on slide rheostat 94 by the contact 95 of worm screw 93 drive slide rheostats in rotation process.Because the minute surface 20 of back mirror is connected with worm screw 93 by turbine 92, the unspecified angle value that minute surface 20 is regulated all will be reflected as unique resistance value.Add 5V voltage at the two ends of two groups of slide rheostats respectively, then at the leading-out terminal at this place, two groups of contacts, export the voltage value signal of a pair of mirror angle position, represent the X-axis value and the Y-axis value of minute surface respectively, and with the microprocessor 5 of two data transmission to this control setup.
Fig. 3 is the principle of work and power sketch of minute surface control panel, " LH ", " RH " key is used for the switching right and left back mirror, " SET " key is used for entering the motor rotary state, button L, R, U and D are used for controlling the interior motor 9 (1) of deflector of band memory function respectively, 9 (2) left, right, on, following four direction rotates, numerical key 1,2,3 and 4 distinguish corresponding four kinds of different mirror angle states, " RECALL " key is used for reading the relevant information that is stored in the control setup module, promptly recover back mirror memory area state, " RESET " key is used for removing the information of control setup module.
The specific operation process that mirror angle is regulated, remembers and waken up is: the back mirror of at first selecting to need to regulate mirror angle by " LH ", " RH " key, press " SET " key, the steering motor of band memory function enters starting state, adjusting L, R, U and D key then drive steer motor makes minute surface rotate towards left and right, upper and lower four direction, is in driver's optimum field angle up to minute surface.If press any one in the numerical key 1,2,3,4, a kind of status information of mirror angle promptly is stored.After pressing " RECALL " key, again by next number keyboard, mirror angle just can return to a kind of state that has before stored.
Fig. 4 is an electronic-circuit diagram of the present utility model.This circuit comprises that following five physical circuit: a are power circuits, and b is a power circuit; C is a control circuit, and d is a driving circuit, and e is a current sampling circuit;
Power circuit 1, referring to Fig. 4 (1), power supply is to be introduced by power supply on vehicle, normally the ground end of the anode of automotive battery or firing tip, power supply, power supply high tension protection circuit and electric source filter circuit and reverse protection circuit and three-terminal voltage-stabilizing integration module are formed, and purpose is to provide failure-free 5v power supply and 12V power supply for the The whole control apparatus system; This power circuit 1 is to be connected to the negative pole of stabilivolt D5 and the input end of three terminal regulator U5, the positive ground of stabilivolt D5 by positive source through diode D4 and resistance R 5, filter capacitor C14 and C1 are connected the two ends of stabilivolt D5, hold and connect capacitor C 15 and C7 through mouth and the ground of three terminal regulator U5 again, get back to the ground end of power supply, the Vcc pin of power output end and microprocessor 5 links to each other.
Switch disable circuit 2, by being connected introducing with the switch of the control setup of operating panel face, the base stage that connects aerotron Q1 through current-limiting resistance R10, the collecting electrode of aerotron Q1 is connected with power supply, and be connected to the P1.0 interface of microprocessor 5 (AT89S52), filter capacitor C8 is connected between base stage and the emitter, the grounded emitter of aerotron Q1.
Astern signal acceptor circuit 3 is introduced astern signal by the input end of this circuit, and the I/O interface that is connected to microprocessor 5 connects, to realize the reliable extraction to outside astern signal.Astern signal acceptor circuit 3 is to be introduced by input end (reverse), behind divider resistance R13, R14, again through the filter of filtering capacitor C 10, C11 and current-limiting resistance R12 formation, is linked into the P0.1 pin of microprocessor 5.
Minute surface control circuit 4, control panel are referring to shown in Figure 3, and circuit diagram is referring to Fig. 4 (4).The location parameter of the control command of the rear-vision mirror face that sends in the car passes through I
2The C bus is stored in E
2Among the PROM.This E
2PROM is the memory device of serial, low-power consumption, and it follows I
2The agreement of C bus is used SDA, and SCL two-wire transmission data allow 8 memory devices and I at most
2The C bus links to each other and does not repeat the address.
Motor-drive circuit 6, the one group of motor-drive circuit 6 that only drawn among Fig. 4, this circuit is made up of two groups of single-pole double throw (SPDT) relays, transistor amplifier and motor high interference pulse absorption circuit and relay protection circuit.Wherein, the base stage of aerotron Q2 is connected to the P2.7 pin of the I/O mouth of microprocessor 5 by resistance R 17, the collecting electrode of aerotron Q2 drives the coil of relay, and the electrical motor of the mouth of relay and one group of vertical (or level) actuating unit of the deflector 9 of band memory function is connected, and realizes the control of deflector 9 forwards (or the oppositely) rotation to the band memory function; The base stage of aerotron Q3 is connected to the P2.6 pin of microprocessor 5I/O mouth by resistance R 11, the collecting electrode of aerotron Q3 drives the coil of relay, and the mouth of relay is connected with the electrical motor of another group vertical (or level) actuating unit of the deflector 9 of band memory function, realizes the control to deflector 9 reverse (or forward) rotation of band memory function.
Two groups of motor-drive circuits 6 are controlled the horizontal actuating unit and vertical actuating unit of the deflector 9 of band memory function respectively, just can realize the adjusting to the light deflector minute surface.
Position signal A/D change-over circuit 7 is made up of the P0.0 pin sampling end of current-limiting protection resistance R 9, microprocessor 5 and the deflector 9 of band memory function.The end of current-limiting resistance R9 connects the P0.0 pin of microprocessor 5, the position signal mouth of the deflector of other end connecting band memory function.The position sampling circuit provides the signal of the needed minute surface of this control setup position, and this signal is that the position signal end of deflector from the band memory function directly obtains, and is input to the P0.0 mouth through current-limiting resistance R9.
Described current signal A/D change-over circuit 8 is made up of integrated operational amplifier U6, input resistance R7, feedback resistance R6, sampling resistor R8.The end of integrated operational amplifier U6 is connected to the A/D thief hatch " current " of microprocessor 5 by sampling resistor R8.The mouth of integrated operational amplifier U6 is connected to the P0.3 pin of microprocessor 5, i.e. " current out " mouth.
Principle of work of the present utility model is:
Referring to Fig. 5, after the Battery+ of power circuit and ground end began to power on to control setup of the present utility model, microprocessor 5 in-to-in oscillators began starting of oscillation, and the minute surface control setup is in running order.The utility model control setup can switch between two kinds of patterns, STOP pattern and RUN pattern.Described STOP pattern is that device of the present utility model is in end power consumption state.The RUN pattern is that device of the present utility model is in the operation control minute surface rotating process.
The utility model control setup all is being in the STOP pattern under general situation, have only will work as control setup and receive astern signal, and promptly when microprocessor 5 detected the P0.1 mouth and is low level, microprocessor 5 waits promptly transferred the RUN pattern to by the STOP pattern after several seconds.
When chaufeur is pressed " SET " key of control panel, the position parameter data of microprocessor 5 opening entry back mirrors.At this moment, if when the numerical key of control panel is pressed, microprocessor 5 can store this location information in the cooresponding memory address of this numeral into and go.Such as, when 1 key was pressed, present location information promptly was stored in the address area No. 1.Next time, this chaufeur was as long as press 1 key once more when driving, and microprocessor 5 will be read the location information in the address No. 1, and minute surface is with No. 1 cooresponding angle position of state of automatic steering.
When microprocessor 5 detects astern signal, microprocessor 5 is in the RUN pattern, control simultaneously P2.6, P2.7 mouth output high level immediately, the control relay of motor-drive circuit 6 is started working, the deflector 9 of rotating band memory function is rotated, detect P0.0 mouth output signal simultaneously, determine the target location of the deflector of band memory function by microprocessor 5.When the deflector 9 that detects the band memory function had forwarded the target location of setting to, control P2.6, P2.7 output low level stopped the rotation with the deflector 9 of memory function.
When microprocessor 5 detects prohibiting function when effective, promptly 1.0 of microprocessor 5P mouthfuls when having detected impulse singla, microprocessor 5 is in the RUN pattern, and relay work is forbidden in the output of microprocessor 5 control P2.6, P2.7 simultaneously.When prohibiting function is effective,, microprocessor 5 do not carry out any operation even having detected astern signal yet.Microprocessor 5 transfers the STOP pattern to by the RUN pattern after detecting the impulse singla disappearance immediately.
Each driver regulates corresponding optimal viewing angle according to individual's seat appearance and driving habit, carries out memory storage then, and relevant information is stored in the control setup module.After the back mirror visual angle was changed, the driver can open the memory storage of oneself very like a cork, made the rear-vision mirror face visual angle return to original set condition.Simultaneously, the angle that this control setup can the automatic compensation rear-vision mirror face after receiving astern signal can be recovered previous angle again automatically when automobile normally moves ahead.