CN105128781A - Automobile reversal monitoring system - Google Patents
Automobile reversal monitoring system Download PDFInfo
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- CN105128781A CN105128781A CN201510452924.XA CN201510452924A CN105128781A CN 105128781 A CN105128781 A CN 105128781A CN 201510452924 A CN201510452924 A CN 201510452924A CN 105128781 A CN105128781 A CN 105128781A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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Abstract
The invention discloses an automobile reversal monitoring system comprising four cameras respectively arranged on the left, right, front and back sides of an automobile, a display screen, a video control module, a triggering module, a first power supplying module, a second power supplying module and a control module. A signal output end of the triggering module is connected with a signal input end of the control module; a first power supply control signal output end of the control module is connected with a controlled end of the first power supplying module; a second power supply control signal output end of the control module is connected with a controlled end of the second power supplying module; an interface control signal output end of the control module is connected with a controlled end of the display screen; a power supply output end of the first power supplying module is connected with a power supply end of the video control module; a power output end of the second power supplying module is connected with a power supply ends of the four cameras; video output ends of the four cameras are connected with an input end of the video control module; and the output end of the video control module is connected with an input end of the display screen.
Description
Technical field
The present invention relates to automobile surveillance technology field, particularly relate to a kind of reversing automobile supervisory system.
Background technology
In the market in auto monitoring system, obtained the scene information of peripheral vehicle by pick up camera, and the video information got is fed back in read-out, move backward to facilitate driver.But in existing auto monitoring system, after pick up camera start, no matter whether use, be all in power-up state, thus consume more electric energy.
Summary of the invention
Main purpose of the present invention is: provide a kind of reversing automobile supervisory system that can realize Intelligent energy-saving.
To achieve these goals, the invention provides a kind of reversing automobile supervisory system, this reversing automobile supervisory system comprises: four pick up cameras being located at the front, rear, left and right of automobile respectively, read-out, and the video information for being obtained by described pick up camera exports the video control module that described read-out carries out showing to.Reversing automobile supervisory system also comprises:
Trigger module, for identifying tune after automobile, front tune, left tune and right tune, and tonal signal, front tonal signal, left tonal signal or right tonal signal after corresponding output;
First supply module, powers on or power-off for controlling described video control module;
Second supply module, for controlling powering on or power-off of pick up camera described in four;
Control module, exports the first power control signal to described first supply module for tonal signal before exporting according to described trigger module or rear tonal signal, starts out-put supply to control described first supply module and powers for described video control module; The signal output interface control signal that described control module exports according to described trigger module divides viewing area to control described read-out; When described first supply module be described video control module power time, described control module exports second source according to the signal that described trigger module exports and controls signal to described second supply module, starts out-put supply to control described second supply module and powers for described pick up camera; Wherein,
The signal output part of described trigger module is connected with the signal input part of described control module; First power control signal mouth of described control module is connected with the controlled end of described first supply module, the second source control signal mouth of described control module is connected with the controlled end of described second supply module, and the interface control signals mouth of described control module is connected with the controlled end of described read-out; The power output end of described first supply module is connected with the power end of described video control module; The power output end of described second supply module is connected with the power end of pick up camera described in four; The video output terminals of pick up camera described in four is connected with the input end of described video control module; The mouth of described video control module is connected with the input end of described read-out.
Preferably, described trigger module comprises the first triggering line, second and triggers line, the 3rd triggering line and the 4th triggering line, the startup of reverse described in described first triggering line identification, and tonal signal extremely described control module after exporting; The lamp that turns left described in described second triggering line identification starts, and exports left tonal signal to described control module; Lamp of turning right described in described 3rd triggering line identification starts, and exports right tonal signal to described control module; The startup of described 4th triggering line identification automobile neutral, and tonal signal extremely described control module before exporting.
Preferably, described second supply module is power supply chip, described power supply chip comprises an input end and a mouth, the input end of described power supply chip is connected with the second source control signal mouth of described control module, and the mouth of described power supply chip is all connected with the power end of pick up camera described in four.
Preferably, it is the pick up camera power supply unit that corresponding pick up camera is powered that described second supply module comprises four second source control signals exported according to described control module, described in four, pick up camera power supply unit comprises controlled end and power output end, the controlled end of pick up camera power supply unit described in four is connected with the second source control signal mouth of described control module, the power output end of pick up camera power supply unit described in four is connected with the power end of pick up camera described in four respectively, described pick up camera power supply unit controls corresponding pick up camera according to the second source control signal that described control module exports and powers on or power-off.
Preferably, described pick up camera power supply unit comprises the first field effect transistor, the first aerotron, the first resistance, the second resistance, the 3rd resistance and the 4th resistance; The source electrode of described first field effect transistor is connected with external dc power; The grid of described first field effect transistor is connected through the collecting electrode of the first resistance with described first aerotron; The drain electrode of described first field effect transistor is connected with the power end of described pick up camera as the power end of described pick up camera power supply unit; The source electrode of described first field effect transistor is connected with the first end of described second resistance, and the grid of described first field effect transistor is connected with the second end of described second resistance; The grounded emitter of described first aerotron; The base stage of described first aerotron is connected with the second source control signal mouth of described control module through the 3rd resistance; The first end of described 4th resistance is connected with the emitter of described first aerotron, and the second end of described 4th resistance is connected with the base stage of described first aerotron.
Preferably, described first supply module comprises: the second field effect transistor, second aerotron, Voltage stabilizing module, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, first electric capacity, second electric capacity and the 3rd electric capacity, the source electrode of described second field effect transistor is connected with external dc power through the 5th resistance, the grid of described second field effect transistor is connected through the collecting electrode of the 6th resistance with described second aerotron, the source electrode of described second field effect transistor is connected with the first end of the 7th resistance, the grid of described second field effect transistor is connected with the second end of described 7th resistance, the drain electrode of described field effect transistor is connected with the input end of described Voltage stabilizing module, the base stage of described second aerotron is connected with the first power control signal mouth of described control module through described 8th resistance, the base stage of described second aerotron also through described 9th resistance eutral grounding, the grounded emitter of described second aerotron, the mouth of described Voltage stabilizing module is connected with the power end of described video control module as the power output end of described first supply module, the input end of described Voltage stabilizing module through the first capacity earth, the mouth of described Voltage stabilizing module through the second capacity earth, described second electric capacity and the 3rd Capacitance parallel connection.
Preferably, reversing automobile supervisory system also comprises and powering on or the 3rd supply module of power-off for controlling described read-out, the described controlled end of the 3rd supply module is connected with the interface signals mouth of described control module, and the power output end of described 3rd supply module is connected with the power end of described read-out.
Preferably, described 3rd supply module comprises: the 3rd field effect transistor, 3rd aerotron, tenth resistance, 11 resistance, 12 resistance, 13 resistance and the 14 resistance, the base stage of described 3rd aerotron is connected with the interface signals mouth of described control module through the tenth resistance, the grounded emitter of described 3rd aerotron, the emitter of described 3rd aerotron is connected with the first end of described 11 resistance, the base stage of described 3rd aerotron is connected with the second end of described 11 resistance, the collecting electrode of described 3rd aerotron is connected through the grid of the 12 resistance with described 3rd field effect transistor, the source electrode of described 3rd field effect transistor is connected with external dc power through described 13 resistance, the source electrode of described 3rd field effect transistor is connected with the first end of described 14 resistance, the grid of described 3rd field effect transistor is connected with the second end of described 14 resistance, the drain electrode of described 3rd field effect transistor is connected with the power end of described read-out as the power output end of described second supply module.
Preferably, reversing automobile supervisory system also comprise mode of operation for pick up camera described in Non-follow control and video control module and response priority level higher than the manual triggers module of trigger module; Wherein, the level signal mouth of described manual triggers module is connected with the input end of described control module; Described manual triggers module exports high level signal or the low level signal input end to described control module; Described control module controls described pick up camera according to the level signal received and video control module starts or stops work.
Reversing automobile supervisory system provided by the invention, this reversing automobile supervisory system detects the current reversing adjustment state of automobile in real time by trigger module.When tune before automobile enters or rear tune state, trigger module then exports energizing signal to control module.It is that video control module is powered that control module then controls the first supply module according to front tune or rear tonal signal, thus wakes video control module work up.Then, control module is that pick up camera is powered, to start camera operation according to signal control second supply module received.Otherwise, when automobile is in normal motoring condition or completes dead ship condition, trigger module does not export energizing signal, control module then controls the first supply module, the second supply module quits work, thus make video control module be in dormant state, pick up camera is in off-position, to play the effect of Intelligent energy-saving.
Accompanying drawing explanation
Fig. 1 is the module diagram of reversing automobile supervisory system one embodiment of the present invention;
Fig. 2 is the module diagram of another embodiment of reversing automobile supervisory system of the present invention;
Fig. 3 is the module diagram of the another embodiment of reversing automobile supervisory system of the present invention;
Fig. 4 is the circuit diagram of the first supply module in reversing automobile supervisory system of the present invention;
Fig. 5 is the circuit diagram of pick up camera power supply unit in reversing automobile supervisory system of the present invention;
Fig. 6 is the circuit diagram of the 3rd supply module in reversing automobile supervisory system of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of reversing automobile supervisory system.
With reference to the module diagram that figure 1 ~ 6, Fig. 1 is reversing automobile supervisory system one embodiment of the present invention; Fig. 2 is the module diagram of another embodiment of reversing automobile supervisory system of the present invention; Fig. 3 is the module diagram of the another embodiment of reversing automobile supervisory system of the present invention; Fig. 4 is the circuit diagram of the first supply module in reversing automobile supervisory system of the present invention; Fig. 5 is the circuit diagram of pick up camera power supply unit in reversing automobile supervisory system of the present invention; Fig. 6 is the circuit diagram of the 3rd supply module in reversing automobile supervisory system of the present invention.A kind of reversing automobile supervisory system that the present embodiment provides, this reversing automobile supervisory system comprises four pick up cameras 1, read-out 2, video control module 3, trigger module 4, control module 5, first supply module 6 and the second supply module 7.The signal output part of trigger module 4 is connected with the signal input part of control module 5.First power control signal mouth of control module 5 is connected with the controlled end of the first supply module 6, the second source control signal mouth of control module 5 is connected with the controlled end of the second supply module 7, and the interface control signals mouth of control module 5 is connected with the controlled end of read-out 2.The power output end of the first supply module 6 is connected with the power end of video control module 3.The power output end of the second supply module 7 is connected with the power end of four pick up cameras 1.The video output terminals of four pick up cameras 1 is connected with the input end of video control module 3.The mouth of video control module 3 is connected with the input end of read-out 2.
Four pick up cameras 1 are located at the left side of automobile, right side, front and rear respectively.When after left side camera 1 electrifying startup, left side camera 1 obtains the video information of automobile left side, and export this video information to video control module 3, be sent to read-out 2 by video control module 3 again to show, to make the scene information of the passenger's Real-time Obtaining automobile left side in car, thus driver is facilitated accurately to move backward.The function and effect of the pick up camera 1 in other orientation is identical with left side camera 1, does not repeat them here.
Trigger module 4 for identifying the signal of reversing automobile, and exports energizing signal to control module 5 according to the signal recognized.It should be noted that reversing automobile comprises: advance, retreat, turn left and turn right.In order to obtain the adjustment in direction situation of automobile more all sidedly.In the present embodiment, trigger module 4 comprises the first triggering line, the second triggering line, the 3rd triggers line and the 4th triggering line.First triggers line for identifying the startup of reverse, and after exporting, tonal signal, to control module 5, to inform that control module 5 automobile is moveed backward, is noted starting rear pick up camera.Second triggers line identification left-hand rotation lamp starts, and exports left tonal signal to control module 5, to inform control module 5 automobile left tune, notes starting left side camera.3rd triggers line identification right-hand rotation lamp starts, and exports right tonal signal to control module 5, to inform control module 5 automobile right tune, notes starting right camera.The startup of the 4th triggering line identification automobile neutral, and before exporting, tonal signal is to control module 5, adjust before control module 5 automobile is to inform, attention starts right camera.The setting of above-mentioned four triggering lines, can identify reversing automobile in time, and control module 5 is informed in the adjustment orientation of automobile, notes starting corresponding pick up camera 1 to remind control module 5.
The signal that control module 5 exports for receiving trigger module 4, and output control signals to the first supply module 6 according to receiving signal at its first power control signal mouth, output control signals to the second supply module 7 at its second source control signal mouth, control signal to read-out 2 at its interface control signals mouth output interface.Set forth below by way of two embodiments, it should be noted that the scope that the present invention protects is not limited in cited embodiment.
First embodiment: control module 5 comprises four input ends, the 3rd mouth and second mouth.Second supply module 7 is power supply chip.Wherein, four input ends are connected with trigger module 4, to receive the signal that trigger module 4 exports.Particularly, four input ends of control module 5 are connected with four mouths triggering line respectively.First power control signal mouth of control module 5 is connected with the controlled end of power supply chip.The power output end of power supply chip is all connected with the power end of four pick up cameras 1.
When automobile enters reversing adjustment state, trigger module 4 triggers line identification automobile starting reverse by first, and tonal signal after exporting to control module 5.Or trigger module 4 triggers line identification automobile suspension neutral by the 4th, and tonal signal before exporting to control module 5.If control module 5 receives front tonal signal or rear tonal signal, then give tacit consent to automobile and enter reversing adjustment state, and output control signals to the first supply module 6 at its first power control signal mouth, power for video control module 3 to control the first supply module 6, thus wake video control module 3 up and work.On the other hand, second source control signal mouth outputs control signals to the second supply module 7, is that four pick up cameras 1 are powered to control the second supply module 7.It should be noted that the error starting for avoiding reversing automobile supervisory system, control module 5 only when tonal signal or rear tonal signal, just can control the first supply module 6 and power for video control module 3 before receiving.That is, left tonal signal and right tonal signal all can not make video control module 3 start, thus avoid error starting reversing automobile supervisory system when auto monitoring system turns left or turns right in automobile normal running process.Moreover control module 5, only after video control module 3 to be triggered by front tonal signal or rear tonal signal and starts, just can export second source and control signal to the second supply module 7 and start pick up camera 1 and work on power.In the present embodiment, 4 pick up cameras 1 are electrifying startup work simultaneously, and the video information got is sent to video control module 3, then by video control module 3, video information are sent to read-out 2 and show.It should be noted that control module 5 exports control signal and controls read-out 2 in 4 display interfaces, to be shown in same read-out 2 by the video information of 4 pick up cameras 1.
When reversing automobile has adjusted, trigger line or the 4th by first and triggered line transmission low level control signal to control module 5.Control module 5 outputs control signals to power supply chip according to the low level signal received, and stops powering for video control module 3, enter dormant state to make video control module 3 with the power end controlling power supply chip.Meanwhile, control module 5 also outputs control signals to the second supply module 7, makes the power-off of four pick up cameras 1, to save electric energy.Now, control module 5, by its interface control signals mouth output interface control signal, makes read-out 2 show DVD or navigation interface.
Second embodiment: control module 5 comprises four input ends, four the 3rd mouths and second mouth.Second supply module 7 comprises four pick up camera power supply units 71.It should be noted that four pick up camera power supply units 71 are that corresponding pick up camera 1 is powered according to the control signal that control module 5 exports.Particularly, four input ends of control module 5 are connected with four mouths triggering line respectively.Four second source control signal mouths of control module 5 are connected with the controlled end of four pick up camera power supply units 71 respectively.Control module 5 exports control signal by each second source control signal mouth, exports or not out-put supply, thus reaches the starting state controlling pick up camera 1 one by one, thus reach better energy-saving effect to control corresponding pick up camera power supply unit 71.
When automobile enters reversing adjustment state, as as described in above-described embodiment, for avoiding the error starting of reversing automobile supervisory system, only have rear tonal signal and front tonal signal trigger control module 5 can to start the first supply module 6 and power for video control module 3, other left tonal signal and right tonal signal all can not trigger and start video control module 3 and work.When first triggers line and recognize automobile reverse gear, and to export after high level tonal signal to control module 5 at its mouth.Control module 5 receives the rear tonal signal that the first triggering line exports, and exports high level signal, to control the first supply module 6 out-put supply and to power for video control module 3 at its corresponding first power control signal.Namely terminate dormant state after video control module 3 powers on, and enter the state of normal work.In addition, control module 5 outputs control signals to corresponding pick up camera power supply unit 71 at its second source control signal mouth, powers for rear side pick up camera 1 to control pick up camera power supply unit 71, thus completes the work of rear side pick up camera 1 electrifying startup.It should be noted that the pick up camera 1 in other orientation is still in the out-of-run state of power-off when not being subject to triggering, thus serve better energy-saving effect.When the second triggering line recognizes the flicker of automobile left-hand rotation lamp, second triggers line exports high level as left tonal signal to control module 5 at its mouth.Control module 5 outputs control signals to corresponding pick up camera power supply unit 71 according to left tonal signal at its second source control signal mouth, powers for left side camera 1 to control pick up camera power supply unit 71, thus completes the work of left side camera 1 electrifying startup.Read-out 2 display aspect, when reversing automobile supervisory system is triggered for the first time, read-out 2 is adjusted to forward sight or backsight interface by DVD or navigation display interface.Be triggered if second triggers line, then control module 5 controls read-out 2 and is adjusted to left visual interface at once.After left visual interface display 5s, read-out 2 is point viewing areas such as left and right, thus realizes the video display simultaneously showing two orientation.If when three orientation are triggered, then read-out 2 is divided into three viewing areas.If when four orientation are all triggered, read-out 2 is divided into four viewing areas.In the present embodiment, when reversing automobile has adjusted, its working process and principle identical with the first embodiment, do not repeat them here.
It should be noted that when automobile starting, reversing automobile supervisory system can carry out self-test operations.Particularly, trigger startup first supply module 6 and power for video control module 3, thus wake video control module 3 up and work.Second supply module 7 is that four pick up cameras 1 are powered, thus makes the pick up camera 1 in four orientation all can monitor the specific environment in automobile four orientation in real time, and the vision signal got is shown in read-out 2.After self-inspection terminates, control module 5 controls the first supply module 6 and stops powering for video control module 3, thus makes video control module 3 be in dormant state, to wait for next reversing energizing signal.Control module 5 also controls the second supply module 7 and stops being that four pick up cameras 1 are powered, and makes four pick up cameras 1 be in off-position, thus saves electric energy.
Reversing automobile supervisory system provided by the invention, this reversing automobile supervisory system detects the current reversing adjustment state of automobile in real time by trigger module 4.When tune before automobile enters or rear tune state, trigger module 4 exports energizing signal to control module 5.Control module 5 controls the first supply module 6 according to front tune or rear tonal signal and powers for video control module 3, thus wakes video control module 3 up and work.Then, control module 5 is powered for pick up camera 1 according to signal control second supply module 7 received, and works to start pick up camera 1.Otherwise, when automobile is in normal motoring condition or completes dead ship condition, trigger module 4 does not export energizing signal, control module 5 controls the first supply module 6, second supply module 7 and quits work, thus make video control module 3 be in dormant state, pick up camera 1 is in off-position, to play the effect of Intelligent energy-saving.
Based on above-described embodiment, for reaching better energy-saving effect, in the present embodiment, reversing automobile supervisory system also comprises control signal that the 3rd supply module the 8, three supply module 8 exports according to control module 5 and controls read-out 2 and power on or power-off.The controlled end of the 3rd supply module 8 is connected with the second mouth of control module 5.The power output end of the 3rd supply module 8 is connected with the power end of read-out 2.When the display interface of read-out 2 is independent, control module 5 exports high level from its second mouth, read-out 2 unlatching.If control module 5 is by its second mouth output low level, read-out 2 shutdown.When the display interface of read-out 2 is public time (as DVD screen), control module 5 exports high level, to trigger the display format that public screen switches to reversing automobile supervisory system by its second mouth.When control module 5 is by its second mouth output low level, read-out 2 is back to normal display format by public screen.
Based on above-described embodiment, for the consequence that the system avoiding trigger module 4 to cause when not having accurately and timely to recognize reversing automobile adjustment signal cannot start, in the present embodiment, reversing automobile supervisory system also comprises the manual triggers module 9 of the mode of operation for Non-follow control pick up camera 1 and video control module 3.Wherein, the level signal mouth of manual triggers module 9 is connected with the input end of control module 5.Manual triggers module 9 exports high level signal or the low level signal input end to control module 5; Control module 5 controls pick up camera 1 according to the level signal received and video control module 3 starts or stops work.Che Nei driver manually can send energizing signal to control module 5, powers on or power-off to make corresponding pick up camera 1.It should be noted that manual triggers module 9 exports to start and X button.The priority level of X button is the highest.
Particularly, the first supply module 6 comprises: the second field effect transistor QT2, the second aerotron Q2, Voltage stabilizing module D, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3.The source electrode of the second field effect transistor QT2 is connected with external dc power VDD through the 5th resistance R5.The grid of the second field effect transistor QT2 is connected with the collecting electrode of the second aerotron Q2 through the 6th resistance R6.The source electrode of the second field effect transistor QT2 is connected with the first end of the 7th resistance R7, and the grid of the second field effect transistor QT2 is connected with second end of the 7th resistance R7.The drain electrode of the second field effect transistor QT2 is connected with the input end of Voltage stabilizing module D.The base stage of the second aerotron Q2 is connected with the first power control signal mouth of control module 5 through the 8th resistance R8.The base stage of the second aerotron Q2 is also through the 9th resistance R9 ground connection.The grounded emitter of the second aerotron Q2.The mouth of Voltage stabilizing module D is connected with the power end of video control module 3 as the power output end of the first supply module 6.The input end of Voltage stabilizing module D is through the first electric capacity C1 ground connection.The mouth of Voltage stabilizing module D is through the second electric capacity C2 ground connection.Second electric capacity C2 is in parallel with the 3rd electric capacity C3.It should be noted that in the present embodiment, external dc power VDD is the direct supply of 5V.
Particularly, the pick up camera power supply unit 71 in the second supply module 7 comprises the first field effect transistor QT1, the first aerotron Q1, the first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4.The source electrode of the first field effect transistor QT1 is connected with external dc power VDD.The grid of the first field effect transistor QT1 is connected with the collecting electrode of the first aerotron Q1 through the first resistance R1.The source electrode of the first field effect transistor QT1 is connected with the first end of the second resistance R2, and the grid of the first field effect transistor QT1 is connected with second end of the second resistance R2.The drain electrode of the first field effect transistor QT1 is connected with the power end of pick up camera 1 as the power output end of pick up camera power supply unit 71.The grounded emitter of the first aerotron Q1.The base stage of the first aerotron Q1 is connected with the second source control signal mouth of control module 5 through the 3rd resistance R3.The first end of the 4th resistance R4 is connected with the emitter of the first aerotron Q1, and second end of the 4th resistance R4 is connected with the base stage of the first aerotron Q1.It should be noted that in the present embodiment, external dc power VDD is 12V direct supply.
Particularly, the 3rd supply module 8 comprises the 3rd field effect transistor QT3, the 3rd aerotron Q3, the tenth resistance R10, the 11 resistance R11, the 12 resistance R12, the 13 resistance R13 and the 14 resistance R14.The base stage of the 3rd aerotron Q3 is connected with the interface control signals mouth of control module 5 through the tenth resistance R10.The grounded emitter of the 3rd aerotron Q3.The emitter of the 3rd aerotron Q3 is connected with the first end of the 11 resistance R11.The base stage of the 3rd aerotron Q3 is connected with second end of the 11 resistance R11.The collecting electrode of the 3rd aerotron Q3 is connected with the grid of the 3rd field effect transistor QT3 through the 12 resistance R12.The source electrode of the 3rd field effect transistor QT3 is connected with external dc power VDD through the 13 resistance R13.The source electrode of the 3rd field effect transistor QT3 is connected with the first end of the 14 resistance R14.The grid of the 3rd field effect transistor QT3 is connected with second end of the 14 resistance R14.The drain electrode of the 3rd field effect transistor QT3 is connected with the power end of read-out 2 as the power output end of the 3rd supply module 8.It should be noted that in the present embodiment, external dc power VDD is the direct supply of 12V.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a reversing automobile supervisory system, comprise: four pick up cameras being located at the front, rear, left and right of automobile respectively, read-out, and the video information for being obtained by described pick up camera exports the video control module that described read-out carries out showing to, it is characterized in that, also comprise:
Trigger module, for identifying tune after automobile, front tune, left tune and right tune, and tonal signal, front tonal signal, left tonal signal or right tonal signal after corresponding output;
First supply module, powers on or power-off for controlling described video control module;
Second supply module, for controlling powering on or power-off of pick up camera described in four;
Control module, exports the first power control signal to described first supply module for tonal signal before exporting according to described trigger module or rear tonal signal, starts out-put supply to control described first supply module and powers for described video control module; The signal output interface control signal that described control module exports according to described trigger module divides viewing area to control described read-out; When described first supply module be described video control module power time, described control module exports second source according to the signal that described trigger module exports and controls signal to described second supply module, starts out-put supply to control described second supply module and powers for described pick up camera; Wherein,
The signal output part of described trigger module is connected with the signal input part of described control module; First power control signal mouth of described control module is connected with the controlled end of described first supply module, the second source control signal mouth of described control module is connected with the controlled end of described second supply module, and the interface control signals mouth of described control module is connected with the controlled end of described read-out; The power output end of described first supply module is connected with the power end of described video control module; The power output end of described second supply module is connected with the power end of pick up camera described in four; The video output terminals of pick up camera described in four is connected with the input end of described video control module; The mouth of described video control module is connected with the input end of described read-out.
2. reversing automobile supervisory system as claimed in claim 1, it is characterized in that, described trigger module comprises the first triggering line, second and triggers line, the 3rd triggering line and the 4th triggering line, the startup of reverse described in described first triggering line identification, and tonal signal extremely described control module after exporting; The lamp that turns left described in described second triggering line identification starts, and exports left tonal signal to described control module; Lamp of turning right described in described 3rd triggering line identification starts, and exports right tonal signal to described control module; The startup of described 4th triggering line identification automobile neutral, and tonal signal extremely described control module before exporting.
3. reversing automobile supervisory system as claimed in claim 1, it is characterized in that, described second supply module is power supply chip, described power supply chip comprises an input end and a mouth, the input end of described power supply chip is connected with the second source control signal mouth of described control module, and the mouth of described power supply chip is all connected with the power end of pick up camera described in four.
4. reversing automobile supervisory system as claimed in claim 1, it is characterized in that, it is the pick up camera power supply unit that corresponding pick up camera is powered that described second supply module comprises four second source control signals exported according to described control module, described in four, pick up camera power supply unit comprises controlled end and power output end, the controlled end of pick up camera power supply unit described in four is connected with the second source control signal mouth of described control module, the power output end of pick up camera power supply unit described in four is connected with the power end of pick up camera described in four respectively, described pick up camera power supply unit controls corresponding pick up camera according to the second source control signal that described control module exports and powers on or power-off.
5. reversing automobile supervisory system as claimed in claim 4, it is characterized in that, described pick up camera power supply unit comprises the first field effect transistor, the first aerotron, the first resistance, the second resistance, the 3rd resistance and the 4th resistance; The source electrode of described first field effect transistor is connected with external dc power; The grid of described first field effect transistor is connected through the collecting electrode of the first resistance with described first aerotron; The drain electrode of described first field effect transistor is connected with the power end of described pick up camera as the power end of described pick up camera power supply unit; The source electrode of described first field effect transistor is connected with the first end of described second resistance, and the grid of described first field effect transistor is connected with the second end of described second resistance; The grounded emitter of described first aerotron; The base stage of described first aerotron is connected with the second source control signal mouth of described control module through the 3rd resistance; The first end of described 4th resistance is connected with the emitter of described first aerotron, and the second end of described 4th resistance is connected with the base stage of described first aerotron.
6. reversing automobile supervisory system as claimed in claim 1, it is characterized in that, described first supply module comprises: the second field effect transistor, second aerotron, Voltage stabilizing module, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, first electric capacity, second electric capacity and the 3rd electric capacity, the source electrode of described second field effect transistor is connected with external dc power through the 5th resistance, the grid of described second field effect transistor is connected through the collecting electrode of the 6th resistance with described second aerotron, the source electrode of described second field effect transistor is connected with the first end of the 7th resistance, the grid of described second field effect transistor is connected with the second end of described 7th resistance, the drain electrode of described field effect transistor is connected with the input end of described Voltage stabilizing module, the base stage of described second aerotron is connected with the first power control signal mouth of described control module through described 8th resistance, the base stage of described second aerotron also through described 9th resistance eutral grounding, the grounded emitter of described second aerotron, the mouth of described Voltage stabilizing module is connected with the power end of described video control module as the power output end of described first supply module, the input end of described Voltage stabilizing module through the first capacity earth, the mouth of described Voltage stabilizing module through the second capacity earth, described second electric capacity and the 3rd Capacitance parallel connection.
7. the reversing automobile supervisory system as described in any one of claim 1 ~ 6, it is characterized in that, also comprise and powering on or the 3rd supply module of power-off for controlling described read-out, the described controlled end of the 3rd supply module is connected with the interface signals mouth of described control module, and the power output end of described 3rd supply module is connected with the power end of described read-out.
8. reversing automobile supervisory system as claimed in claim 7, it is characterized in that, described 3rd supply module comprises: the 3rd field effect transistor, 3rd aerotron, tenth resistance, 11 resistance, 12 resistance, 13 resistance and the 14 resistance, the base stage of described 3rd aerotron is connected with the interface signals mouth of described control module through the tenth resistance, the grounded emitter of described 3rd aerotron, the emitter of described 3rd aerotron is connected with the first end of described 11 resistance, the base stage of described 3rd aerotron is connected with the second end of described 11 resistance, the collecting electrode of described 3rd aerotron is connected through the grid of the 12 resistance with described 3rd field effect transistor, the source electrode of described 3rd field effect transistor is connected with external dc power through described 13 resistance, the source electrode of described 3rd field effect transistor is connected with the first end of described 14 resistance, the grid of described 3rd field effect transistor is connected with the second end of described 14 resistance, the drain electrode of described 3rd field effect transistor is connected with the power end of described read-out as the power output end of described second supply module.
9. reversing automobile supervisory system as claimed in claim 1, is characterized in that, also comprise mode of operation for pick up camera described in Non-follow control and video control module and response priority level higher than the manual triggers module of trigger module; Wherein, the level signal mouth of described manual triggers module is connected with the input end of described control module; Described manual triggers module exports high level signal or the low level signal input end to described control module; Described control module controls described pick up camera according to the level signal received and video control module starts or stops work.
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| CN201510452924.XA CN105128781B (en) | 2015-07-29 | 2015-07-29 | Auto monitoring system |
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| CN201510452924.XA CN105128781B (en) | 2015-07-29 | 2015-07-29 | Auto monitoring system |
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