CN2617628Y - Reverse rear-view monitoring and right-left steering rear-view monitoring controller on vehicle - Google Patents

Abstract

The utility model discloses a back-sight controller used to monitor reversing as well as turning left and right, comprising a power supply control component, a manual channel selection control component, a monitoring indicating control component and an automatic change-over control component used in reversing; wherein the power supply control component is composed of a power supply conversion stabilizing circuit, a relay drive circuit and a feather-touch switch circuit; the manual channel selection control component is composed of a channel selection control circuit; the monitoring indicating control component is composed of a power supply commutation circuit and a video signal commutation circuit; the automatic change-over control component used in reversing is composed of a reversing switching circuit, a left-and-right turning switching circuit, a priority discrimination circuit used in reversing, a vehicle warning circuit and a set of circuit used to expand, identify and turn off the left-and-right turning signal. The utility model has the advantages that the electronic monitoring absorbing angle ranges from 70 degrees to 150 degrees and the angle of view is expanded by 2.5 to 5 times, free from the influence of climates and seasons.

Description

The reversing automobile backsight monitors and the left and right backsight supervisory controller that turns to

Technical field

The utility model relates to a kind of backsight monitor unit that is used for automobile, is that a kind of reversing automobile backsight monitors and the left and right backsight supervisory controller that turns to specifically

Background technology

At present, the backsight angle of automotive rear-view eyeglass has only 30 °, seriously exists visual dead angles.Because visual dead angles, according to statistics automobile accident cause casualties 80% since chaufeur turning and the road, when overtaking other vehicles the and arranged on left and right sides backsight watched from a height or a distance inadequately and causing.Therefore, for addressing this problem, this technical field development research among many kinds of automobile backsight devices such as the patent publication No. CN2516398Y disclosed " automotive rear-view mirror angle automatic control device ".It adopts two groups of Direct Current Motors, and two groups of control circuits are formed; Drive its grandmother's angle of adjustment of left and right back mirror respectively by two groups of Direct Current Motors; Two groups of control circuits are controlled the rotating of two groups of Direct Current Motors respectively, respectively with bearing circle on indicator switch interlock, by control circuit respectively change-over switch and timekeeping circuit output, so as to the driving Direct Current Motor., eliminate visual dead angles though but this device possesses automatic control and adjustment back mirror angle.Make things convenient for chaufeur to grasp the car situation, to guarantee traffic safety.But be subjected to condition effect such as weather, night owing to exist, make it can not provide that the visual angle is broad, clear, accurate, weather-proof backsight supervisory system.

The utility model content

The purpose of this utility model is for solving the problem that above-mentioned technology exists, and provide a kind of wide-field backsight angle, and, back view is monitored and the left and right backsight supervisory controller that turns to as reversing automobile backsight complete, that be reflected on the telltale clearly by the camera that setting has night vision function.

For achieving the above object, technical solution of the present utility model is achieved like this: reversing automobile backsight and the left and right backsight supervisory controller that turns to is characterized in that it comprises power-supply control unit, manually channel is selected control assembly, monitors the demonstration control assembly and moveed backward automatic conversion and control assembly composition; Wherein:

A, described power-supply control unit are made up of power conversion mu balanced circuit, relay drive circuit and power supply touch-switch control circuit;

B, described manual channel select control assembly to select control circuit to form by channel;

C, described supervision demonstration control assembly are made up of power supply switch circuit and vision signal commutation circuit;

D, the automatic conversion and control assembly of described reversing monitor automatic conversioning controling circuit, right steering supervision automatic conversioning controling circuit, the preferential judging circuit of Monitor for reverse, automobile warning interlock circuit and the left and right turn sign expansion of automobile by Monitor for reverse automatic conversioning controling circuit, left steering and discern breaking circuit automatically and form.

Described power conversion mu balanced circuit is that 1 pin by automobile power source 24V/12V connecting connector CN1A is connected with 3 pin, and 1 and 3 pin by CN1B are connected to the power conversion modular assembly, export V after inter-process ₀12V and VDD15V two-way power supply, one road V ₀Be the controller circuitry power supply, another road VDD is connected to the 1 pin output of adaptor union CN2A respectively by the open contact JK of relay J C, and three terminal regulator U01LM7812 output VCC12V forms.

Described relay drive circuit is by V ₀Connect collecting electrode, grounded emitter that relay coil JC is connected to transistor Q01C1815, base stage is formed by the negative pole end that resistance R 04 is connected to diode D02 and D03.

Described power supply touch-switch control circuit is by V ₀Be connected to 1 pin of optocoupler U02 by resistance R 01, connect button switch S01 and capacitor C 06 power connection negative pole respectively by 2 pin, be connected to 3 pin of optocoupler and 10 pin of U03BCD4518 by V02 respectively by resistance R 02,, form by 15 pin that diode D01 is connected U03BCD4518 through the 12-14 pin short circuit of the negative pole of the 4 pin power connections of optocoupler U02 and U03BCD4518 by 15 pin outer meeting resistance R03 and capacitor C 05.

It is to lead up to resistance R 302 by VCC to connect 1 pin of optocoupler U301 that described channel is selected control circuit, connect button switch S301 respectively and C302 is connected to power cathode by 2 pin, another road connects 2 pin of U03A and 3 pin of optocoupler U301 respectively by resistance R 301,4 pin power connection negative poles by U301, by 3 of the mouth of U03ACD4518,4 pin connect 11 of data selector U109DCD4066 respectively, 12 pin, be connected respectively and 13 of door U101D by 19 pin of U109D and mouth 5 pin of U03ACD4518,12 pin, 1 pin by 101D connects diode D302, by 7 of U03ACD4518,6 pin also meet diode D301,7 pin of U03ACD4518 connect capacitor C 301 and resistance R 303, are made up of by the 1-3 pin output of adaptor union CN101A respectively the 3-5 pin OPADD signal of U03ACD4518 mouth.

Described power supply switch circuit is the address input end 11 that is connected multi-channel analog change-over swith U207CD4051 by the 1-3 pin of adaptor union CN102B respectively, 10,9 pin, wherein 3 pin of U207 meet VCC by resistance R 204,13 pin are respectively by diode D201, D202 connects voltage stabilizer U201,2 pin of U202, by U201, the 1 pin power input of U202 is received respectively on the VCC power supply, U201, the 3 pin ground connection of U202, U201,4 pin of U202 are received 1 pin of adaptor union CN201 respectively, 14 of U207CD4051,15,12,1,5,2 pin are connected to 2 pin of voltage stabilizer U201-206 respectively, connect on the VCC power supply by 1 pin power input, the voltage output end branch is connected to 1 pin of adaptor union CN201A-CN206A, the 3 pin power connection negative poles of U201-U206, and with 3 pin of the adaptor union CN2C1A-CN206A composition that joins.

Described video circuit is the address input end 11 that is connected multi-channel analog change-over swith U208CD4051 by the 1-3 pin of adaptor union CN102B respectively, 10,9 pin, 3 pin by U208CD4051 connect 2 pin of data selector U209A and 3 pin of U209B respectively, 13 of U209A and U209B, the indirect not gate U210A of 5 pin inserts U210C by 13 pin of U209A and 1 pin of not gate U210A, U210B and peripheral bonded assembly resistance R 206, R206 and capacitor C 201, by 14 of U208CD4051,15,12,1,5,2 pin are connected to 2 pin of adaptor union CN201A-CN206A respectively and form.

Described Monitor for reverse automatic conversioning controling circuit is by master cock K by power supply, the K switch of reversing gear 1 is connected to 1 pin of adaptor union CN103A, 1 pin connection damping resistance R101 by CN103B is connected to 8 of U101C again, 9 pin, by 8,10 pin output by U101C after 9 pin outer meeting resistance R102 and capacitor C 101 shapings is connected to 5 of U106B, 6 pin, deliver to U106C by its 4 pin output, U107C, U107D reversing turn to preferential identification input end U106C 8,9 pin, export by 10 pin, this signal is leaded up to diode D107 and is connected in 12 of U106D, 13 pin connect data selector U109A by 11 pin, U109B, the inspection system end 13 of U109C, 5,6 pin are closed the data selector passage; Another road is connected 2 pin that diode D111 is connected to adaptor union CN102A by U108A and U108B two-stage time-delay buffering, by the 1-3 pin of CN102A connect resistance R 118 respectively, R119, R120 form.

Described left steering backsight monitors that automatic conversioning controling circuit is by master cock K by power supply, left steering K switch 2 is connected to 2 pin of adaptor union CN103A, 2 pin by CN103B connect 1 of U101A by damping resistance 103,2 pin, by 1 of U101A, export by 3 pin of U101A after 2 pin outer meeting resistance R104 and capacitor C 102 shapings, the left rotaring signal of the interruption of output is by U103A, U104B, U104A, U102C, U102A, the U102B left direction signal is expanded the 1 pin output of time-delay by U103A, this signal is input to by U107A, the U106A1 pin of interlocking input end and 2 pin of left direction signal switching controls end U107A are differentiated in U107B and U106A caution, 3 a pin output left side by U106A, the 3 pin output that right caution judgment signal is connected to U107A enters by U106C, U107C, 9 pin of the preferential left steering input end U107C that differentiates of U107D are differentiated the 10 pin output left direction signal of back by U107C, this signal one tunnel connects D108 and is connected to 12 of U106D, 13 pin, connect data selector U109A by the output of 11 pin, U109B, 13 of U109C, 5,6 pin, U108C is passed through on another road, U108D two-stage time-delay buffering back is by diode D112, D113 is connected to 3 of adaptor union CN102A respectively, 1 pin, it is 1 years old, 2,3 pin connect resistance R 118 respectively, R119, R120 forms.

Described right steering backsight monitors that automatic conversioning controling circuit passes through master cock K by power supply, right steering K switch 3 is connected to 3 pin of adaptor union CN103A, 3 pin by CN103B connect 5 of U101B by damping resistance R105,6 pin, by 5 of U101B, export by 4 pin of U101B after 6 pin outer meeting resistance R106 and capacitor C 103 shapings, the interval signal of output is by U103, U105B, U105A, U102D, U102E, U102F right steering signal is expanded the 13 pin output of time-delay by U103B, this signal is input to by U107A, the U106A1 pin of interlocking input end and 5 pin of right steering signal switching controls end U107B are differentiated in U107B and U106A caution, 3 a pin output left side by U106A, right caution judgment signal is connected to 6 pin of U107D, this signal and 5 pin that are added in U107B, the 3 pin output signals of U106A enter by U106C with the 4 pin output of differentiation back by U107B, U107C, 12 pin of the preferential right steering input end U107D that differentiates of U107D are differentiated the 11 pin output right steering signal of back by U107D, this signal one tunnel connects D109 and is connected to 12 of U106D, 13 pin, connect data selector U109A by the output of 11 pin, U109B, 13 of U109C, 5,6 pin, another road connects diode D114 by U108F two-stage time-delay buffering back, D115 is connected to 2 pin of adaptor union CN102A respectively, 3 pin, it is 1 years old, 2,3 pin connect resistance R 118 respectively, R119, R120 forms.

Described caution interlock circuit is to connect 2 pin of U106A and 2 pin of U107A respectively by 1 pin that turn sign is expanded the left mouth U103A of circuit; 13 pin that turn sign is expanded the mouth U103B of circuit connect 1 pin of U106A and 12 pin of U107D respectively, after the expansion turn to through U106A with differentiate the back and be connected 1 pin of U107A and 6 pin of U107B respectively by the output of mouth 3 pin, enter 9 pin of input end U107C of the preferential judging circuit of moveing backward by the 4 pin output of 3 pin of U107A and U107B again and 12 pin of U107D are formed.

It is by being exported by its 3 pin after the U101A shaping by left direction signal that described left direction signal is expanded circuit, 1 pin that connects resistance R 110 and U102A by capacitor C 105 respectively, 3 pin that connect U102B by 2 pin, connect U103AR 3 pin by its 4 pin output by diode D101, be connected to 5 pin of U103A again through the left direction signal of shaping, form by the continuous left direction signal of its 1 pin output.

It is by being exported by its 4 pin after the U101B shaping by the right steering signal that described right steering signal is expanded circuit, 9 pin that connect R112 and U102D by 1 pin of capacitor C 107 respectively, 11 pin that connect U102E by 8 pin of U102D, 11 pin that connect U103B by 10 outputs by diode D104, right steering signal after shaping is connected to 9 pin of U103B again, is made up of the continuous right steering signal of its 13 pin output.

It is by being exported by its 3 pin after the U101A shaping by left direction signal that described left steering automatically shuts down identification circuit, 5 pin that connect resistance R 107 and U102C by capacitor C 104 respectively, 4 pin that connect U104A by its 6 pin, be connected in 11 pin of U104B by the output of 6 pin, by the output of 10 pin, 3 pin that connect U103A by diode D103 are formed.

It is by being exported by its 4 pin after the U101B shaping by the right steering signal that described right steering automatically shuts down identification circuit, 13 pin that connect resistance R 114 and U102F by capacitor C 106 respectively, 4 pin that connect U105A by its 12 pin, export 11 pin that are connected in U105B by 6 pin, form by 11 pin that diode D106 is connected to U103B by its 10 pin output.

The characteristics that the utlity model has:

1, the input of this controller can be refuted and be connect various video signals such as comprising the outer backsight panorama signal of car, VCD, DVD, GPS, and output can be refuted and be connect multiple monitoring device.

2, the signal control passage that under normal driving states, can select institute's safety supervision to look by the button on the controller panel.

3, under driving states, discern left rotaring signal, right turn signal, alarm signal automatically, and start the control signal corresponding passage synchronously, remove the manual selector channel of SELF CL under the alert status.

4, under the reversing state, discern astern signal and syn automatically and switch to the backsight monitored state, close other signal line.

5, this controller replaces traditional left and right eyeglass backsight technology with the hyundai electronics monitoring technique, and can provide 70 ° of-150 ° of angles of shooting of electronic monitoring, the open 2.5-5 in visual angle doubly, the refraction scene of left and right eyeglass backsight can be become the direct-vision image of camera, image is complete, clearly be reflected on the telltale, simultaneously owing to adopted the camera that has night vision function, and have waterproof, frost prevention, a characteristic such as dustproof, can round-the-clock, not be subjected to season, weather, influence round the clock, thus the safety that has effectively improved automobile.

Description of drawings

Fig. 1 is the circuit block diagram of this new controller.

Fig. 2 is a controller power source control circuit schematic diagram.

Fig. 3 is a controller channel selectivity circuit schematic diagram.

Fig. 4 is that controller monitors the display circuit schematic diagram.

Fig. 5 is the controller schematic circuit diagram that turn to and move backward.

The specific embodiment

Below in conjunction with accompanying drawing embodiment, to this novel being further described.

Monitor and the left and right backsight supervisory controller that turns to that by reversing automobile backsight shown in Figure 1 it comprises power conversion and voltage stabilizing control assembly, manually channel selects control assembly, supervision demonstration control assembly and reversing, left and right sides backsight conversion and control assembly four parts to form.Wherein, the power conversion control assembly is made up of power conversion and mu balanced circuit, relay drive circuit and touch-switch circuit; Manually channel selects control assembly to be made up of manual channel selectivity circuit; Supervision demonstration control assembly is made up of power supply switch circuit, vision signal commutation circuit; Reversing, left and right sides backsight conversion and control assembly monitor that by Monitor for reverse automatic switching circuit, left steering automatic switching circuit, right steering monitor that automatic switching circuit, the preferential judging circuit of Monitor for reverse, automobile warning interlock circuit, left and right sides turn sign are expanded circuit and left and right turning to automatically shuts down identification circuit and form.

Fig. 2 has provided controller power source conversion control circuit schematic diagram, it is connected with 3 pin through 1 pin of adaptor union CN1A respectively with negative level by the anodal 24V of automobile power source (12V), enter the power conversion modular assembly then, and after inter-process, export V0 (12V1A) and VDD (15V 5A) two-way power supply; V0 (12V 1A) is for this controller circuitry work power supply, to satisfy the effective execution of power control part branch to each operation; VDD (15V5A) is through the open contact switch JK of JC relay 3,4 pin, and its open contact switch JK adhesive VDD flows through JK when relay is worked, and 1 pin of a route adaptor union CN2 is directly exported; For peripheral hardwares such as GPS provide power supply; Another road is output as VCC (12V) by its 3 pin behind 1 pin of three terminal regulator LM7812, and exports by 2 pin of adaptor union CN2, and VCC is to be the telltale of controller and the camera work power supply of being correlated with.VDD provides working power for the GPS assembly.The collecting electrode C that connects transistor Q01C1815 by the output of 2 pin again by 1 pin of V0 connecting circuit coil JC forms the driving circuit of relay to the negative electrode K that 2 pin of power cathode and Q01 base stage B and resistance R 104 are connected and 1 pin by resistance R 104 connects D02 and D03 respectively through emitter E.Wherein the anti-phase and diode D04 that connects establishes for protection aerotron Q01 on 1,2 pin of relay J C two ends, and 2 pin of the base stage B of Q01 and resistance R 104 are connected and the 2 pin connection by resistance R 104 and 1 pin by resistance R 104 respectively the effect of bonded assembly D02 and D03 be decay and isolation to input control signal.1 pin that also connects optocoupler U02 by 1 pin of V0 connection resistance R 01 by 2 pin of resistance R 01,2 pin that 2 pin by U02 connect 1 pin of 2 pin of button switch S01 and C06 and 1 pin by button switch S01 and C06 are connected the negative pole of power supply, V0 connects 3 pin that 2 pin of resistance R 02 and 1 pin by resistance R 02 connect 10 pin of U03BCD4518 and optocoupler U02 respectively and is connected 12 of the negative pole of power supply and U03BCD4518 through 4 pin of optocoupler U02 again, 13, connect the anodal A of diode D01 and the negative electrode K by diode D01 behind the 14 pin short circuits and be connected to the light ON-OFF control circuit of power supply that the external resistance R 03 of 15 pin of the 15 groups of pin of U03BCD4518 and CD4518 and chemical capacitor C05 form.Wherein and capacitor C 06 effect that connects again the button switch two ends be for eliminating effective execution that switch from fluttering guarantees switch.Resistance R 03 that 15 pin of CD4518 are external and chemical capacitor C05 constituted behind 12,13, the 14 pin short circuits of start reset circuit, U03BCD4518 of U03BCD4518 and between its 15 pin and the diode D01 effect that connects be in order to eliminate the sky counting of U03BCD4518.Resistance R 03 that 15 pin of U03BCD4518 are external and chemical capacitor C05 have constituted the start reset circuit of U03BCD4518.

The power control circuit principle of work:

A, button switch S01, C06, optocoupler U02, and peripheral device D01, R03 and C05 spare formed touch, the power control switch of debounce singly-bound button.Wherein to have formed essence be binary counter for U03B CD4518 and D01, resistance R 03 that 15 pin of U03B CD4518 are external and chemical capacitor C05 have formed the start reset circuit of U03B CD4518, have guaranteed effective work of the control signal of manually opened and closing controller power supply of controller and display power supply.

When button switch S01 does not press, so there are not 3,4 pin that electric current flows through optocoupler U02 to be high-impedance state between 1,2 pin of optocoupler U02, so because counting end 0 pin of V0 by the clamper U03B CD4518 of R02 keeps high level not have the pulse input, thereby U03B CD4518 does not count, the mouth of U03B CD4518 11 pin Q0 keep low level.Because the isolation of D02 can't make aerotron Q01 conducting, so controller is kept off-mode.When button switch S01 presses, so 1,2 pin of optocoupler U02 also have 3, the 4 pin conductings that electric current flows through optocoupler U02 to be low resistive state, counting end 10 pin of U03B CD4518 receive the falling edge impulse singla one time, so U03B CD4518 counting once (because this control circuit adopts is falling edge trigger action counting, thus when button continues to press and button press that U03B CD4518 does not count when lifting) mouth 11 pin Q0 become high level by low level.This high level makes aerotron Q01 adhesive by D02 through the R04 current limliting, thereby the power supply of start-up control device makes controller work.Counting end 10 pin of same U03B CD4518 counting once when button-shape S01 presses once more, making its mouth become Q0 becomes 0 (low level), Q1 end and becomes high level (in the following narration with " 1 " expression high level), this high level is delivered to 15 pin of U03BCD4518 through D01, U03BCD4518 is resetted, thereby make its mouth Q0 keep stable low level.(representing low level with " 0 " in the following narration).

B, transistor Q01, relay coil JC and transistor Q01 peripheral components R04 and diode D02, D03, D04 have formed relay drive circuit, and the anti-phase diode D04 that is attempted by relay coil JC two ends is for keeping aerotron Q01 to prevent to be punctured by anti-phase high impulse.D03, D02 isolate manual and automatic start-up control signal.The high level of the mouth 11 pin Q0 of U03BCD4518 output drives aerotron Q01 through D02, R04 and makes its saturation conduction, drive that relay is inhaled and, be 3,4 pin open contact JK closures of relay, be that power supply forms circuit-formed power supply output power supply.Driving display and camera work.

Fig. 3 has provided the manual channel of controller and has selected the control circuit schematic diagram.It connects 1 pin of resistance R 302 by VCC and 2 pin by resistance R 302 connect 1 pin that light floods U301, and 2 pin that 2 pin by U301 connect 1 pin of 1 pin of button switch S301 and C302 and 2 pin by button switch S301 and C302 respectively are connected the negative pole of power supply; Be connected 1 pin of resistance R 301 with while VCC and 2 pin by resistance R 301 connect counting input end 2 pin of U03BCD4518 respectively and 3 pin of optocoupler U301 are connected power cathode through 4 pin of optocoupler U301 again, and connect behind counting input end 2 pin of U03B CD4518 mouth (Q0) 3 pin through U03B CD4518, (Q1) 4 pin connect 11 pin and 12 pin of data selector U109D CD4066 respectively, and mouth (Q2) 5 pin of 10 pin by U109D and U03A CD4518 are connected 13 and 12 pin with door U101D respectively, positive pole 2 pin that connect diode D302 again by 11 pin of U101D, negative pole 1 pin by D302 arrives the outer bonded assembly chemical capacitor C301 of 7 pin of 7 pin of U03B CD4518 and 6 pin outer and the diode D301 that connects and U03 CD4518 and reset circuit that resistance R 303 is formed and has formed channel together and select control circuit, the mouth (Q2 of U03B CD4518, Q1, Q0) Shu Chu address signal is respectively by 1 of adaptor union CN101A, 2, the output of 3 pin.

Wherein optocoupler U301 and outer meeting resistance R301 and R302, capacitor C 302 and button switch S301 formed touch, debounce button select switch.Capacitor C 302 effects that are attempted by button switch S301 two ends are for eliminating effective execution that switch from fluttering guarantees switch.Resistance R 303 and chemical capacitor C301 that 7 pin of U03A CD4518 are external have formed the start reset circuit, be attempted by the outer diode D301 of mouth 6 pin of U03ACD4518 and reset terminal 7 pin, and mouth 3, the 4 pin bonded assembly data selector U109D of U03ACD4518 and connectedly formed the vacant address code of eliminating the U03BCD4518 generation with door U101D and diode D302.

Channel is selected the control circuit principle of work:

Optocoupler U301 and outer meeting resistance R301 and R302, capacitor C 302 and button switch S301 formed touch, debounce button selected shape, capacitor C 302 effect that wherein is attempted by button switch S301 two ends is for eliminating effective execution that switch from fluttering guarantees switch.Its principle of work is the same described identical.

Because what this controller adopted is the control of individual palpation key switch, so to different channel employings is that a unique corresponding with it binary code is controlled, this binary address sign indicating number is exactly to be produced by U03ACD4518, and the address code that U03ACD4518 produces is 0000-1111 totally ten six address codes, and this controller has only seven passages such as goods control channel, top view passage, backsight passage, be that 0000-0110 is an activity address code, 0111-1111 is the invalid address sign indicating number.That is to say that eight invalid address sign indicating numbers of 0111-1111 that U03A CD4518 produces will mask.U03B CD4518 with and mouth 3,4 pin bonded assembly data selector U109D and its 11 pin bonded assembly formed with door U101D and diode D302 and eliminated the invalid address decoding circuit that U03B CD4518 produces.Its effect is exactly to eliminate the redundant address sign indicating number.Its principle of work is as follows: when start back because the address code of the U03A CD4518 mouth output that the reset response of external resistance R 303 of 7 pin of U03A CD4518 and chemical capacitor C301 makes is the article surveillance passage that this controller is given tacit consent to for " 0000 ", when button switch S301 presses, 10 pin of U03ACD4518 detect one and descend along the pulse towards signal, U03A CD4518 counting once, export an address at its mouth and be " 0001 ", and remove mouth (Q0) 3 pin of U03A CD4518 this moment is " 1 ", and all the other mouths are even to be " 0 ".The current potential that is added in 12 pin of U109D this moment is " 1 ", the current potential that is added in its 12 pin is " 0 ", because U109D CD4066 is a data selector, have only when its input end 11 pin and Enable Pin 12 pin all are " 1 ", its mouth 10 pin just are " 1 ", and input end 11 pin of U109D are " 1 " at this moment, and enable control end 12 pin is that " 0 " is so its mouth 10 pin still are " 0 ", this level "0" is delivered to input end 13 pin with door U101D, as long as when one end being arranged for " 0 " with door U101D, its mouth 11 pin are " 0 " just, because the buffer action of diode D302, U03A CD4518 continues accumulated counts.Promptly can receive the count pulse of 2 pin of U03ACD4518.Make mouth Q0-Q3 address code incremental variations.Other increases progressively sign indicating number as mentioned above, when address code is increased to is 0111 (Q3, Q2, Q1, Q0) time, promptly 3,4,5 pin output is that input end 11 pin of data selector U109D " 1 " this moment and Enable Pin 12 pin are even to be " 1 ", so its mouth 11 pin are " 1 ", this high level " 1 " is added to input end 13 pin with door U101D, because of the mouth Q2 (5 pin) of U03A CD4518 also is " 1 ", this high level " 1 " is added to input end 12 pin with door U101D, so with mouth 11 pin of door U101D be " 1 ", this high level (1) is added to the RESET input 7 pin of U03A CD4518 by diode D302, U03A CD4518 is resetted, be that the OPADD sign indicating number is got back to 0000 initial condition, shielded the invalid address sign indicating number, finish a channel selecting circulation, the external diode D301 of the mouth Q3 of U03A CD4518 (6 pin) exports reliable and effective address code effect for assurance U03A CD4518 mouth, thereby can finish the function of pressing selection of times monitoring channel passage by button switch.

Fig. 4 has provided controller and has monitored display circuit, and it is connected address input end 11,10,9 pin of multi-channel analog change-over swith U207 CD4051 respectively by 1,2,3 pin of adaptor union CN102B.Its 3rd pin connects 2 pin of resistance R 204, and inserts VCC by 1 pin of resistance R 204, can import level"1" when making the multiway analog switch gating.XO passage gating end the 13rd pin of multiway analog switch U207 CD4051 connects positive pole 1 pin of diode D201, D202 respectively and enables control end the 2nd pin by what negative level the 2nd pin of diode D202 received respectively that band enables the voltage stabilizer U201 of control end and U202, the 1st pin Vi power input of U201, U202 is received respectively on the Vcc power supply, the 3rd pin of U201, U202 is spared ground connection, the 4th pin of U201, U202 is received respectively on the 1st pin of adaptor union CN201 and CN202, for corresponding bonded assembly camera provides working power.What other gating end of multiway analog switch U207CD4051, X1 (14 pin), X2 (15 pin), X3 (12 pin), X4 (1 pin), X5 (5 pin), X6 (2 pin) received voltage stabilizer U201, U202, U203, U204 that band enables control end, U205, U206 respectively enables control end the 2nd pin, band enables voltage stabilizer U201, U202, U203, the U204 of control end, even the receiving on the Vcc power supply of the 1st pin (Vi) power input of U205, U206, voltage output end is received the 1st pin of adaptor union CN201A-CN206A respectively, for corresponding bonded assembly camera provides working power.The 3rd pin of U201, U202, U203, U204, U205, U206 is spared the power connection negative pole.And join with the 3rd pin of adaptor union CN201A-CN206A, above device connected to form the power supply switch circuit that monitors display control switch; Address input end 11,10,9 pin that connect multi-channel analog change-over swith U208CD4051 by 1,2,3 pin of adaptor union CN102B respectively.Its 3rd pin connects 2 pin of adaptor union CN207, delivers to the video input interface of telltale by 2 pin of adaptor union CN207B.Can show when making the multiway analog switch gating switch the vision signal of gating.The XO passage of multiway analog switch U208 CD4051 is sought and is held the 13rd pin to connect mouth 2 pin of data selector U209A and mouth 3 pin of U209B respectively, to receive vision signal by U209A input end 1 pin institute's bonded assembly (BF) automobile rearview camera vision signal and U209B input end 4 pin institute's bonded assemblys (TF) automobile top view camera, U209A and U209B enable control end 13 pin and the indirect not gate U210A of 5 pin, and input end 1 pin of Enable Pin 13 pin of U209A and not gate U210A has been connected one by U210C and U210B and peripheral components resistance R 205, the multi-vibrator that U206 and capacitor C 201 are formed, its oscillation period hhhhssss, make U209A and U209B alternate conduction, satisfied the function of top view and backsight Alternation Display.Other gating end X1 (14 pin) of multiway analog switch U208CD4051, X2 (15 pin), X3 (12 pin), X4 (1 pin), X4 (5 pin), X6 (2 pin) receive the 2nd pin of adaptor union CN201A-CN206A respectively, make vision signal be able to gating.The vision signal commutation circuit that has connected to form the supervision display control switch of above device;

Camera and telltale and corresponding adaptor union join and have formed CCD camera assembly and display assembly.

Monitor the principle of work of display circuit:

The address code that send the channel selector channel is through 1 of adaptor union CN101B, 2, the 3 pin letter address input end of delivering to the vision signal commutation circuit that the voltage commutation circuit be made up of U207 and peripheral components and U208 and peripheral components form respectively are the address input end 11 of multiway analog switch, 12,13 pin, the controller acquiescence is article surveillance state (the automatic Alternation Display of top view and backsight) when start, as address code " 000 " (Q1, Q2, when Q3) being input to the address input end of voltage switching controls chip U207, the XO passage is by gating at this moment, and promptly 3 pin of U207 and 13 pin are switched on.Level"1" on 3 pin of U207 CD4051 passes to 13 pin of U207, this high level is by diode D201 and D202 difference power-on master cock U201 and U202, make top view and rearview camera power supply all be switched on, so top view and rearview camera are started working.And this moment, " 000 " (Q1, Q2, Q0) address code was added to address input end 11,10,9 pin of video switch chip U208 simultaneously, so 3 pin of U208 and 13 pin are also by gating, the top view of this moment and the vision signal of rearview camera are passed through the 13 pin input of the 4 pin U209A of data selector U209B respectively, deliver to 13 pin of U208 more respectively by 2 pin of U209B3 pin U209A, this vision signal is connected to 2 pin of CN207A by 3 pin of U208, deliver to the video input fracture of telltale then, by the telltale display image.And the conducting of data selector U209A and U209B is because the effect of not gate U210A is interlocking, therefore avoided signals from collision, and the oscillation period of the multi-vibrator that the cycle of data selector conducting is made up of U210C, U210B and its peripheral components is controlled, and has therefore satisfied our designing requirement.

The XO passage of (become by " 000 " " 001 ") U207 and U208 is closed when the Input Address sign indicating number changes, so corresponding camera power supply and channel video signal are closed, the X1 passage of U207 and the X1 passage of U208 when opening, after the X1 of U207 passage is opened, its 3 pin dirt " 1 " point is put down Enable Pin 2 pin that are added to power-supply controller of electric U201 by 14 pin of U207, so coupled top view camera is started working.The vision signal of top view camera is by the X1 passage (14 pin) of the 2 pin U208 of CN201A, and 001 address code of this moment also is added to address input end 11,10,9 pin of U208, so the X1 passage of U208 is opened, vision signal is delivered to display assembly by 3 pin of U208 through the 2nd pin of CN207A, by the telltale display image.

When selecting button switch to press again, address code increases progressively once, and this address code is delivered to the address input end of U207 and U208 again, and its principle of work is identical with above-mentioned principle of work, no longer applies here and states.

Fig. 5 has provided the controller control circuit schematic diagram that turns to and move backward, it by automobile power source after automobile key gate control K switch, 1 pin that connects adaptor union CN103A by automotive reverse gear master cock K1,1 pin that connects damping resistance R101 again by 1 pin of CN103B, be connected to input end 8 pin and 9 pin of U101C by 2 pin of R101, and through U101C and its 8, be connected to the input end 5 of U106B after the shaping that resistance to ground R102 that 9 pin are external and earth capacitance C101 form by the 10 pin output of U101C, 6 pin, after its buffering,, deliver to by U106C by its 4 pin output, U107C, it is 8 of U106C that the reversing of compositions such as U107D turns to the move backward reversing input end of preferential identification circuit of preferential differentiation, 9 pin.After differentiating preferentially, it exports by 10 pin of U106C, input end 12,13 pin that this signal one tunnel connects positive pole 1 pin of D107 and is connected to U106D by negative pole 2 pin of D107, the passage that control end 13,5,6 pin are closed data selector that enables by being connected to data selector U109A, U109B, U109C after its 11 pin output has cut off the address code input of manual selective channel.And another road is connected to the 2nd pin of adaptor union CN102A by its negative level 2 pin output with positive pole 1 pin that is connected diode D111 by U108A and U108B two-stage time-delay buffering, R118, the R119, the R120 resistance to ground that are connected to respectively with adaptor union 1,2,3 pin have synthesized the reversing address code, promptly the address code by CN102A output is 010 (a, b, c), this address code is exactly the address code of the vehicle backing backsight supervision passage of this controller, and more than Xu Shu circuit has connected to form the Monitor for reverse automatic conversioning controling circuit.By automobile power source after automobile key gate control K switch, 2 pin that connect adaptor union CN103A by automobile left steering master cock K2,1 pin that connects damping resistance R1031 again by 2 pin of CN103B, be connected to input end 1 pin and 2 pin of U101A by 2 pin of R103, and export by 3 pin of 101A after the shaping circuit shaping of forming through the external resistance to ground R104 of U101A and 2 pin 1, and earth capacitance C102.Because being interrupted signal, the motor turning signal must expand the requirement that just can satisfy controller for continuous stable high level through time-delay.So by the left direction signal of the interruption of 3 pin of U101A output through turning left after signal is expanded delay control circuit to become continuous level by U103A, U104B, U104A, U102C, U102A, U102B and peripheral components thereof etc. by the 1 pin output of U103A.The left direction signal of this high level is input to the caution of the caution control circuit of being made up of U107A, U107B and U106A and differentiates input end 1 pin of interlocking input end U106A and 2 pin of left direction signal switch controller U107A.Be connected to 1 pin of U107A through the left and right caution judgment signal of 3 pin of U106A output, this signal is exported the left steering control signal with the output signal that is added in U107A2 pin and U106A3 pin and after entering the 9 pin differentiation of left steering input end U107C of the preferred judging circuit of being made up of U106C, U107C, U107D of reversing after differentiating the 3 pin output of back by U107A by 10 pin of U107C.Input end 12,13 pin that this signal one tunnel connects positive pole 1 pin of D108 and is connected to U106D by negative pole 2 pin of D108, enable control end 13,5,6 pin by what be connected to data selector U109A, U109B, U109C after the output of its 11 pin, close the passage of data selector, promptly cut off the address code input of manual selective channel.And another road is connected positive pole 1 pin of diode D112 and D113 by U108C with U108D two-stage time-delay buffering back and export the 3rd pin and 1 pin that is connected respectively to adaptor union CN102A by negative pole 2 pin of D112 and D113, this signal with and adaptor union 1,2, the R118 that 3 pin are connected to respectively, R119, the R120 resistance to ground has synthesized left steering control address code, promptly the address code by CN102A output is 101 (a, b, c), this address code is exactly the address code of the left steering backsight supervision passage of this controller, and more than Xu Shu circuit has connected to form left steering and monitored automatic conversioning controling circuit.By automobile power source after automobile key gate control K switch, 3 pin that connect adaptor union CN103A by automobile right steering master cock K3,1 pin that connects damping resistance R105 again by 3 pin of CN103B, be connected to input end 5 pin and 6 pin of U101B by 2 pin of R105, and export by 4 pin of U101B after the shaping circuit shaping of forming through the external resistance to ground R106 of U101B and 6 pin 5, and earth capacitance C103.Because the motor turning signal is interrupted signal, must expand the requirement that just can satisfy controller for continuous stable high level through time-delay.So become behind the continuous high level 13 pin output through expand delay control circuit by the right steering signal of U103, U105B, U105A, U102D, U102E, U102F and peripheral components thereof etc. by 103B by the right steering signal of the interruption of 4 pin of U101 output.The right steering signal of this high level is input to by U107A, input end 1 pin of interlocking input end U106A and 5 pin of right steering signal switching controls end U107B are differentiated in the caution of the caution control circuit that U107B and U106A form, through the left side that 3 pin of U106A are exported, right caution judgment signal is connected to 6 pin of U107D, the output signal of this signal and 3 pin of the U106A of 5 pin that are added in U107B with differentiate after enter by U106C after exporting by 4 pin of U107B, U107C, 12 pin of the right steering input end U107D of the preferential judging circuit of reversing that U107D forms are differentiated the 11 pin output right steering control signal of back by U107D.Input end 12,13 ends that this signal one tunnel connects positive pole 1 pin of D109 and is connected to U106D by negative pole 2 pin of D109, enable control end 13,5,6 pin by what be connected to data selector U109.U109B, U109C after the output of its 11 pin, close the passage of data selector, promptly cut off the address code input of manual selective channel.And another road is connected positive pole 1 pin of diode D114 and D115 by U108E with U108F two-stage time-delay buffering back and export the 2nd pin and 3 pin that are connected respectively to adaptor union CN102A by negative pole 2 pin of D114 and D115, this signal with and adaptor union 1,2, the R118 that 3 pin are connected to respectively, R119, the R120 resistance to ground has synthesized right steering control address code, promptly the address code by CN102A output is 011 (a, b, c), this address code is exactly the address code of the right steering backsight supervision passage of this controller, and more than Xu Shu circuit has connected to form right steering and monitored automatic conversioning controling circuit.This design of Controller be that reversing has precedence over a left side, right steering and the manually control of selective channel, so 8 of U106C, conduct is through the anti-phase reversing signal input end of U106B behind the 9 pin short circuits, input end 8 pin and input end 13 pin of U107D of connecting U107C simultaneously, and another input end 9 pin of U107C are as the input end (promptly 4 pin with right steering signal differentiation mouth U107B join) of left direction signal, through U106C, U107C, export the reversing control signal at 10 pin of U106C respectively after the preferential differentiation of U107D, at the 11 pin output right steering control signal of U107D, this output signal connects D110 respectively and controls corresponding telltale work.Connect U106C and close manual selective channel passage.By U108 and the synthetic corresponding address of D111-D115, R118-R120 control code.State when glimmering work simultaneously such as turn to automobile left and right, controller requires should cut out left and right supervision automatic switching circuit under the caution mode of operation.Mouth 1 pin that turn sign is expanded the left mouth U103A of circuit connects 2 pin of U106A and 2 pin of U107A respectively; Mouth 13 pin that turn sign is expanded the right mouth U103B of circuit connect 1 pin of U106A and 12 pin of U107D respectively, after the expansion turn to through U106A with differentiate the back and export by its mouth 3 pin and be connected 1 pin of U107A and 6 pin of U107B respectively, enter the input end (9 pin of U107C and 12 pin of U107D) of the preferential judging circuit of reversing again by the 4 pin output of 3 pin of U107A and U107B, above-mentioned device connected to form the automobile warning interlock circuit.

The composition of identification circuit is expanded and automatically shut down to the left and right turn sign of automobile:

It is respectively to connect 1 pin of R110 and 1 pin of U102A by its 3 pin output, 1 pin by capacitor C 105 by left direction signal after by the U101A shaping that a, automobile left steering expand circuit, 3 pin that connected U102B by 2 pin are again connected 3 pin of U103A by its 4 pin output again by positive pole 2 pin of D101 by its 1 pin, so and this moment through the left direction signal of shaping by 5 pin that the are connected to U103A continuous left direction signal of its 1 pin output again.

B, automobile right steering expand circuit be by the right steering signal by the U101B shaping after by its 4 pin output, connect 1 pin of R112 and 9 pin of U102D respectively through 1 pin of C107,11 pin that connected U102D by 8 pin are again connected 11 pin of U103B again by its 2 pin by positive pole 2 pin of D104 by its 10 pin output, and be connected to 9 pin of U103B when inferior through the right steering signal of shaping, so the continuous right steering signal of its 13 pin output again.

C, automobile left steering automatically shut down identification circuit be by left direction signal by the U101A shaping after by the output of its 3 pin, connect 2 pin of R107 and 5 pin of U102C respectively through 1 pin of C104,4 pin that connected U104A by its 6 pin again are by 11 pin of its 6 pin output by U104B, by the output of its 10 pin, positive pole 2 pin by D103 arrive the left steering that 3 pin of U103A form and automatically shut down identification circuit; Wherein the external electric capacity of U104B and U104A and resistance C109, C108 and R109, R108 have formed delay control circuit.

D, automobile right steering automatically shut down identification circuit be by the right steering signal by the U101B shaping after by the output of its 4 pin, connect 1 pin of R114 and 13 pin of U102F respectively through 1 pin of C106,4 pin that connected U105A by its 12 pin again are by 11 pin of its 6 pin output by U105B, by the output of its 10 pin, positive pole 1 pin by D106 arrives the right steering that 11 pin of U103B form and automatically shuts down identification circuit.Wherein the external electric capacity of U105B and U105A and resistance C111, C110 and R116, R115 have formed delay control circuit.

Vehicle backing backsight and left and right backsight monitor the principle of work of automatic conversioning controling circuit:

Because the left and right sides turn sign of automobile is the discontinuous signal that is interrupted, so, make it to become the successive control signal for the control signal that it is become this controller and need has added the expansion circuit of left and right turn sign.Close corresponding supervision passage when turn sign disappears, turn to automatic identification to switch off control circuit so added, one turns to light to turn-off behind the delay time and turns to monitoring channel accordingly after stopping turn sign.When preventing under the automobile warning state (about turn to continuous circulation flicker) work, show the confusion that causes to monitoring, so added caution interlocking control circuit, the supervision mix when eliminating caution work.This design of Controller is for reversing override power, so added preferential recognition control circuit.Therefore automotive rear-view monitors, left and right backsight supervisory controller monitors that by Monitor for reverse automatic conversioning controling circuit, left steering automatic conversioning controling circuit, right steering monitor that automatic conversioning controling circuit, the preferential judging circuit of Monitor for reverse, automobile warning interlock circuit and the left and right turn sign of automobile discern breaking circuit etc. automatically and form.Its each principle of work division is as follows:

The principle of work of Monitor for reverse automatic conversioning controling circuit:

When reversing takes place, the automobile switch closure that reverses gear, the automobile power source K switch 1 adaptor union CN103A that flows through that reverses gear that flows through, be added to by U101C behind 1 pin of B, the input end of the shaping buffer circuit that R102 and C101 formed, be 8 of U101C, 9 pin, after its shaping buffering, the high level of this reversing (following usefulness " 1 " expression high level, with " 0 " expression low level) control signal is input to the input end 5 of U106B, 6 pin are by its 4 pin output, enter by U106C, the reversing input end of the preferential judging circuit of reversing that U107C and U107D formed, be 8 of U106C, 9 pin, then after the preferential differentiation of the preferential judging circuit of moveing backward, by the 10 pin output reversing control signal " 1 " of C106C.This signal one tunnel is added to the address code that the buffering of data selector U109A, B has been synthesized the Monitor for reverse control channel through diode D111 and resistance R 118-R120, i.e. the address code O " 010 " (a, b, c) of CN102A output respectively through diode D107 and U106D.Finished backsight and monitor and show and lead up to power supply (if this moment, telltale was closed) that diode D110 is added to the 3 pin automatically opening displays of adaptor union CN2 in addition through the astern signal level"1" of diode D107 this moment.

Left steering monitors the principle of work of automatic conversioning controling circuit:

When the automobile left steering, automobile left steering master cock K2 closure, the signal that left steering is interrupted is by 2 pin of adaptor union CN103A, B, the input end of delivering to the buffering shaping circuit of being made up of U101A, R104 and C102 by damping resistance R103 is U101A1,2 pin, is exported the impulse level of left steering after shaping by 3 pin of U101A.This left steering pulse road delivers to directly that to form the input end that turn sign expands by U103A and peripheral components be 5 pin of U103A, and the positive rise single-shot trigger trigger shaping that another road left steering impulse singla is formed by U102A and peripheral circuit is after the U102B buffering, by D101 the left steering rising edge of a pulse is delivered to the clock trigger end that left direction signal is expanded circuit again, and input end 5 pin of left direction signal expansion this moment circuit are level"1", export a stable level"1" so expand mouth 1 pin of circuit in the left steering pulse, when the left steering pulse disappears, clock triggering input end 3 pin of expanding circuit because of the left steering pulse have not been positive rises, so no matter which kind of level its input end 5 pin are, " 1 " high level that maintains its mouth 1 pin can not disappear yet, when next left steering pulse comes then, as seen from the above description, its mouth 1 pin should so be stable level"1".Thus the left steering impulse singla that is interrupted is expanded the left steering control signal that is converted to stable level"1".

Be that the left steering input end that enters the caution interlock circuit of being made up of U106A, U107A and U107B after the 1 pin output of U103A is 2 pin of U106A when the left steering control signal that converts stable level"1" to is expanded circuit by the left-hand rotation pulse mouth, differentiate the control signal of back by 3 pin output left steering " 1 " high level of U107A through interlocking, this high level delivers to the preferential judging circuit of reversing is made up of U106A, U107C and U107D again, to differentiate afterwards by its left steering mouth be that 10 pin of U107C are exported.This signal one tunnel enables controller 13,5,6 pin through what diode D108 and U106D were added to data selector U109A, B, C respectively, has closed the address code passage of delivery selective channel.And the buffering of another road left steering control signal level"1" by U108C, D is after diode D112, D113 and resistance R 118-R120 have synthesized the address code that left steering monitors control channel, the address code that is CN102A output is " 101 " (a, b, c), be left steering and monitor the channel address sign indicating number, finished the left steering backsight and monitor and show and lead up to power supply (if this moment, telltale was closed) that diode D110 is added to the 3 pin automatically opening displays of adaptor union CN2 in addition through the left steering control signal level"1" of the utmost point pipe D108 this moment.

Right steering monitors the principle of work of automatic conversioning controling circuit:

Right steering backsight follow-up work principle and left steering backsight follow-up work principle are identical, no longer apply at this and state.

The move backward principle of work of preferential control circuit judge:

The reversing control circuit judge is by U106C, U107C and U107D form, the 4 pin output high level of astern signal mouth U106B when not having the reversing generation, this high level is added to the input end 8 that reversing detects respectively, 9 pin and left steering control signal detect input end 8 pin and steering controling signal detects input end 13 pin, therefore (when 3 pin of U107A or 11 pin of U107D have level"1" output) turning to 9 pin or U107DR 12 pin that detect input end U107C to have corresponding high level input accordingly when taking place when turning to, therefore on the preferential left side of judging circuit, the right steering mouth is that 10 pin of U107C or 11 pin of U107D just have corresponding turn sign level"1" output; When reversing takes place, this moment, 4 pin of U106B were level "0", the preferential astern signal input end of differentiating testing circuit of its reversing is 8 of U106C, 9 pin are level "0", the mouth of the preferential astern signal of differentiating of its reversing is the 10 pin output level"1" reversing control signal of U106C, because of 8 of U106C, 9 pin are level "0", so 13 pin of 8 pin that preferred judging circuit left steering input end is U107C and the input end U107D of right steering circuit also are level "0", because U107C, D is the identification output that turns to about AND circuit hydrogen has blocked, and has promptly finished the preferential realization of differentiating of reversing.

The principle of work of automobile warning interlocking control circuit:

The automobile warning interlock circuit is made up of U106A, U107A and U107B, because of U106A right and wrong door, its input end is respectively the input end of left and right turn sign, its input end connects input end 6 pin of the input end 1 pin U107B of U107A respectively, and their another input end connects corresponding steering controling signal respectively.Its principle of work is such:

A, when not turning to the input end of U106A entirely for level "0", so mouth 3 pin (A point) are level"1", but c point and b point are level "0" in the circuit, so d point and e point also are level "0" in the circuit, so the sliding signal output of interlocking warning circuit.

B, as caution during work (about turn to the work of glimmering simultaneously), the input end of U106A is (1) level entirely in the circuit, so the A point is a level "0" in the circuit, though 2 of B, C are high level in the circuit, but because the A point is that 2 of D, E should so be level "0" in the level "0" hydrogen circuit, therefore also sliding signal output.

C, when the automobile left steering, input end 2 pin of U106A are that level"1", 1 pin are level "0", the A point is a level"1" in the circuit at this moment, the B point is that level"1", C point are level "0" in the circuit again, so the D point is that level"1", E point are level "0" in the circuit, therefore warning interlock circuit has exported left direction signal.

D, when the automobile right steering, its principle of work and left steering are identical, no longer auspicious here stating.

The left and right turn sign of automobile is expanded continuity number and is judged the principle of work of recognition control circuit automatically:

The left and right turn sign of automobile is expanded continuity number and is judged that automatically recognition control circuit comprises automobile left direction signal four parts of expanding that circuit, right steering signal are expanded circuit, left direction signal identification switches off control circuit and right steering identification switches off control circuit.Its principle of work division is as follows:

A, automobile left direction signal are expanded the principle of work of circuit:

It is with U101A that the automobile left direction signal is expanded circuit, U102A, U102B, U103 is that main and peripheral additional device is formed, after its principle of work is the buffering and shaping of impulse singla through U101A and peripheral circuit composition that left steering is interrupted when the automobile left steering, one the tunnel directly is added to 5 pin of U103A, another road is through CU102A and C105, the positive rise singlet trigger circuit that R110 forms detect the positive rise impulse singla of left steering impulse singla, after U102B shaping buffering, pass through D101, the positive rise of left steering impulse singla is delivered to the rising edge clock input end of U103A, so 5 pin of U103A are that mouth 1 pin of level"1" U103A is the level"1" of continous-stable in the time of therefore, have finished the expansion of left direction signal.

B, automobile right steering signal are expanded the principle of work of circuit:

Principle of work and left steering principle of work that automobile right steering signal is expanded circuit duplicate this no longer auspicious stating.

The principle of work of c, automobile left steering identification breaking circuit:

Automobile left steering identification breaking circuit is made up of U102C, C104, R107 and U104A, B and its peripheral components, wherein U104A, U104B and peripheral components have been formed pulse delay circuit, delay time, pulse width was by R109 and C109 decision by R108 and C108 decision.C104, R107 and U102C have formed the falling edge binary pair, be used for detecting left steering impulse level signal, if the time of left steering pulse-off is less than the pulse setting-up time, the identification breaking circuit disconnected impulse level signal of not bothering to see me out, if the time that the left steering pulse disappears is greater than the controller setting-up time, the identification breaking circuit is sent the shutoff level of positive rise at 10 pin of U104B, this pulse is delivered to the clear terminal that circuit is expanded in pulse by D103, be 3 pin of U104B, this moment, left steering was closed again, so 5 pin of U104B are level "0",, promptly turn-offed the left steering control signal so 1 pin of U104B has been exported level "0".

The principle of work of d, automobile right steering identification breaking circuit:

Automobile right steering identification breaking circuit is made up of R102D, C107, R112 and U105A, U105B and its peripheral components, and its principle of work and left steering identification breaking circuit principle of work are identical.The Therefore, omited.

Claims (15)

1, reversing automobile backsight and the left and right backsight supervisory controller that turns to is characterized in that it comprises power-supply control unit, manually channel is selected control assembly, monitors the demonstration control assembly and moveed backward automatic conversion and control assembly composition; Wherein:

A, described power-supply control unit are made up of power conversion mu balanced circuit, relay drive circuit and power supply touch-switch control circuit;

B, described manual channel select control assembly to select control circuit to form by channel;

C, described supervision demonstration control assembly are made up of power supply switch circuit and vision signal commutation circuit;

D, the automatic conversion and control assembly of described reversing monitor automatic conversioning controling circuit, right steering supervision automatic conversioning controling circuit, the preferential judging circuit of Monitor for reverse, automobile warning interlock circuit and the left and right turn sign expansion of automobile by Monitor for reverse automatic conversioning controling circuit, left steering and discern breaking circuit automatically and form.

2, by described reversing automobile backsight of claim 1 and the left and right backsight supervisory controller that turns to, it is characterized in that described power conversion mu balanced circuit is that 1 pin by automobile power source 24V/12V connecting connector CN1A is connected with 3 pin, 1 and 3 pin by CN1B are connected to the power conversion modular assembly, export V after inter-process ₀12V and VDD15V two-way power supply, one road V ₀Be the controller circuitry power supply, another road VDD is connected to the 1 pin output of adaptor union CN2A respectively by the open contact JK of relay J C, and three terminal regulator U01LM7812 output VCC12V forms.

3, by described reversing automobile backsight of claim 1 and the left and right backsight supervisory controller that turns to, it is characterized in that described relay drive circuit is by V ₀Connect collecting electrode, grounded emitter that relay coil JC is connected to transistor Q01C1815, base stage is formed by the negative pole end that resistance R 04 is connected to diode D02 and D03.

4, the reversing automobile backsight of stating by claim 1 monitors and the left and right backsight supervisory controller that turns to, and it is characterized in that described power supply touch-switch control circuit is by V ₀Be connected to 1 pin of optocoupler U02 by resistance R 01, connect button switch S01 and capacitor C 06 power connection negative pole respectively by 2 pin, be connected to 3 pin of optocoupler and 10 pin of U03BCD4518 by V02 respectively by resistance R 02,, form by 15 pin that diode D01 is connected U03BCD4518 through the 12-14 pin short circuit of the negative pole of the 4 pin power connections of optocoupler U02 and U03BCD4518 by 15 pin outer meeting resistance R03 and capacitor C 05.

5, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, it is characterized in that it is to lead up to resistance R 302 by VCC to connect 1 pin of optocoupler U301 that described channel is selected control circuit, connect button switch S301 respectively and C302 is connected to power cathode by 2 pin, another road connects 2 pin of U03A and 3 pin of optocoupler U301 respectively by resistance R 301,4 pin power connection negative poles by U301, by 3 of the mouth of U03ACD4518,4 pin connect 11 of data selector U109DCD4066 respectively, 12 pin, be connected respectively and 13 of door U101D by 19 pin of U109D and mouth 5 pin of U03ACD4518,12 pin, 1 pin by 101D connects diode D302, by 7 of U03ACD4518,6 pin also meet diode D301,7 pin of U03ACD4518 connect capacitor C 301 and resistance R 303, are made up of by the 1-3 pin output of adaptor union CN101A respectively the 3-5 pin OPADD signal of U03ACD4518 mouth.

6, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, the power supply switch circuit that it is characterized in that institute's list is the address input end 11 that is connected multi-channel analog change-over swith U207CD4051 by the 1-3 pin of adaptor union CN102B respectively, 10,9 pin, wherein 3 pin of U207 meet VCC by resistance R 204,13 pin are respectively by diode D201, D202 connects voltage stabilizer U201,2 pin of U202, by U201, the 1 pin power input of U202 is received respectively on the VCC power supply, U201, the 3 pin ground connection of U202, U201,4 pin of U202 are received 1 pin of adaptor union CN201 respectively, 14 of U207CD4051,15,12,1,5,2 pin are connected to 2 pin of voltage stabilizer U201-206 respectively, connect on the VCC power supply by 1 pin power input, the voltage output end branch is connected to 1 pin of adaptor union CN201A-CN206A, the 3 pin power connection negative poles of U201-U206, and with 3 pin of the adaptor union CN2C1A-CN206A composition that joins.

7, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, it is characterized in that described video circuit is the address input end 11 that is connected multi-channel analog change-over swith U208CD4051 by the 1-3 pin of adaptor union CN102B respectively, 10,9 pin, 3 pin by U208CD4051 connect 2 pin of data selector U209A and 3 pin of U209B respectively, 13 of U209A and U209B, the indirect not gate U210A of 5 pin inserts U210C by 13 pin of U209A and 1 pin of not gate U210A, U210B and peripheral bonded assembly resistance R 206, R206 and capacitor C 201, by 14 of U208CD4051,15,12,1,5,2 pin are connected to 2 pin of adaptor union CN201A-CN206A respectively and form.

8, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, it is characterized in that described Monitor for reverse automatic conversioning controling circuit is by master cock K by power supply, the K switch of reversing gear 1 is connected to 1 pin of adaptor union CN103A, 1 pin connection damping resistance R101 by CN103B is connected to 8 of U101C again, 9 pin, by 8,10 pin output by U101C after 9 pin outer meeting resistance R102 and capacitor C 101 shapings is connected to 5 of U106B, 6 pin, deliver to U106C by its 4 pin output, U107C, U107D reversing turn to preferential identification input end U106C 8,9 pin, export by 10 pin, this signal is leaded up to diode D107 and is connected in 12 of U106D, 13 pin connect data selector U109A by 11 pin, U109B, the inspection system end 13 of U109C, 5,6 pin are closed the data selector passage; Another road is connected 2 pin that diode D111 is connected to adaptor union CN102A by U108A and U108B two-stage time-delay buffering, by the 1-3 pin of CN102A connect resistance R 118 respectively, R119, R120 form.

9, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, it is characterized in that described left steering backsight monitors that automatic conversioning controling circuit is by master cock K by power supply, left steering K switch 2 is connected to 2 pin of adaptor union CN103A, 2 pin by CN103B connect 1 of U101A by damping resistance 103,2 pin, by 1 of U101A, export by 3 pin of U101A after 2 pin outer meeting resistance R104 and capacitor C 102 shapings, the left rotaring signal of the interruption of output is by U103A, U104B, U104A, U102C, U102A, the U102B left direction signal is expanded the 1 pin output of time-delay by U103A, this signal is input to by U107A, the U106A1 pin of interlocking input end and 2 pin of left direction signal switching controls end U107A are differentiated in U107B and U106A caution, 3 a pin output left side by U106A, the 3 pin output that right caution judgment signal is connected to U107A enters by U106C, U107C, 9 pin of the preferential left steering input end U107C that differentiates of U107D are differentiated the 10 pin output left direction signal of back by U107C, this signal one tunnel connects D108 and is connected to 12 of U106D, 13 pin, connect data selector U109A by the output of 11 pin, U109B, 13 of U109C, 5,6 pin, U108C is passed through on another road, U108D two-stage time-delay buffering back is by diode D112, D113 is connected to 3 of adaptor union CN102A respectively, 1 pin, it is 1 years old, 2,3 pin connect resistance R 118 respectively, R119, R120 forms.

10, monitor and a left side by the described reversing automobile backsight of claim 1, right steering backsight supervisory controller, it is characterized in that described right steering backsight monitors that automatic conversioning controling circuit passes through master cock K by power supply, right steering K switch 3 is connected to 3 pin of adaptor union CN103A, 3 pin by CN103B connect 5 of U101B by damping resistance R105,6 pin, by 5 of U101B, export by 4 pin of U101B after 6 pin outer meeting resistance R106 and capacitor C 103 shapings, the interval signal of output is by U103, U105B, U105A, U102D, U102E, U102F right steering signal is expanded the 13 pin output of time-delay by U103B, this signal is input to by U107A, the U106A1 pin of interlocking input end and 5 pin of right steering signal switching controls end U107B are differentiated in U107B and U106A caution, 3 a pin output left side by U106A, right caution judgment signal is connected to 6 pin of U107D, this signal and 5 pin that are added in U107B, the 3 pin output signals of U106A enter by U106C with the 4 pin output of differentiation back by U107B, U107C, 12 pin of the preferential right steering input end U107D that differentiates of U107D are differentiated the 11 pin output right steering signal of back by U107D, this signal one tunnel connects D109 and is connected to 12 of U106D, 13 pin, connect data selector U109A by the output of 11 pin, U109B, 13 of U109C, 5,6 pin, another road connects diode D114 by U108F two-stage time-delay buffering back, D1115 is connected to 2 pin of adaptor union CN102A respectively, 3 pin, it is 1 years old, 2,3 pin connect resistance R 118 respectively, R119, R120 forms.

11, monitor and the left and right backsight supervisory controller that turns to by the described reversing automobile backsight of claim 1, it is characterized in that described caution interlock circuit is to connect 2 pin of U106A and 2 pin of U107A respectively by 1 pin that turn sign is expanded the left mouth U103A of circuit; 13 pin that turn sign is expanded the mouth U103B of circuit connect 1 pin of U106A and 12 pin of U107D respectively, after the expansion turn to through U106A with differentiate the back and be connected 1 pin of U107A and 6 pin of U107B respectively by the output of mouth 3 pin, enter 9 pin of input end U107C of the preferential judging circuit of moveing backward by the 4 pin output of 3 pin of U107A and U107B again and 12 pin of U107D are formed.

12, monitor and the left and right backsight supervisory controller that turns to by the described reversing automobile backsight of claim 1, it is characterized in that it is by being exported by its 3 pin after the U101A shaping by left direction signal that described left direction signal is expanded circuit, 1 pin that connects resistance R 110 and U102A by capacitor C 105 respectively, 3 pin that connect U102B by 2 pin, connect the U103AR3 pin by its 4 pin output by diode D101, be connected to 5 pin of U103A again through the left direction signal of shaping, form by the continuous left direction signal of its 1 pin output.

13, monitor and the left and right backsight supervisory controller that turns to by the described reversing automobile backsight of claim 1, it is characterized in that it is by being exported by its 4 pin after the U101B shaping by the right steering signal that described right steering signal is expanded circuit, 9 pin that connect R112 and U102D by 1 pin of capacitor C 107 respectively, 11 pin that connect U102E by 8 pin of U102D, 11 pin that connect U103B by 10 outputs by diode D104, right steering signal after shaping is connected to 9 pin of U103B again, is made up of the continuous right steering signal of its 13 pin output.

14, monitor and the left and right backsight supervisory controller that turns to by the described reversing automobile backsight of claim 1, it is characterized in that it is by being exported by its 3 pin after the U101A shaping by left direction signal that described left steering automatically shuts down identification circuit, 5 pin that connect resistance R 107 and U102C by capacitor C 104 respectively, 4 pin that connect U104A by its 6 pin, be connected in 11 pin of U104B by the output of 6 pin, by the output of 10 pin, 3 pin that connect U103A by diode D103 are formed.

15, monitor and the left and right backsight supervisory controller that turns to by the described reversing automobile backsight of claim 1, it is characterized in that it is by being exported by its 4 pin after the U101B shaping by the right steering signal that described right steering automatically shuts down identification circuit, 13 pin that connect resistance R 114 and U102F by capacitor C 106 respectively, 4 pin that connect U105A by its 12 pin, export 11 pin that are connected in U105B by 6 pin, form by 11 pin that diode D106 is connected to U103B by its 10 pin output.

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