CN102941826B - A kind of method and device guaranteeing power engineering vehicle driving safety - Google Patents
A kind of method and device guaranteeing power engineering vehicle driving safety Download PDFInfo
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- CN102941826B CN102941826B CN201210526010.XA CN201210526010A CN102941826B CN 102941826 B CN102941826 B CN 102941826B CN 201210526010 A CN201210526010 A CN 201210526010A CN 102941826 B CN102941826 B CN 102941826B
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Abstract
Guarantee method and the device of power engineering vehicle driving safety, belong to power engineering working truck field.It arranges a side-looking camera on the right outside side view mirror housing of vehicle, and side-looking camera video output signal is corresponding with original backup camera video output signals and be connected with the video signal input terminal of navigating instrument after connecing; The two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera.When vehicle is in state of rolling backward, the two change-over switch of dibit is placed in primary importance, the image of navigating instrument display taken by backup camera; When vehicle is in non-state of rolling backward, the two change-over switch of dibit is placed in the second place, the image taken by navigating instrument display side-looking camera.It is visual that it achieves to vehicle right side side coil external environment condition on position of driver, eliminates the vision dead zone of chaufeur in vehicle operation, guarantee the safety in the process of moving of power engineering vehicle.
Description
Technical field
The invention belongs to power engineering working truck field, particularly relating to a kind of method for eliminating driver's seat blind spot and device thereof.
Background technology
In real work, various electrical equipment has and is much all mounted in operating environment complexity, without the place of good road conditions or surface condition complexity.
Along with the application and development of mechanized construction, increasing large-scale power engineering truck (comprising electricity emergency car) is used to daily power construction, patrol and examine or field device maintenance, in repairing work, substantially increase the work efficiency of on-the-spot outdoor construction, repairing work.
Meanwhile, along with the complexity variation of working environment, the various travelings that power engineering vehicle occurs/driving class accident also increases thereupon.
In order to ensure the driving safety of vehicle, each car production producer have employed various active safety, passive safety system in a large number, improve the driving safety performance of automobile most possibly, in these safety methods, that knows has safety strap, safety air bag, safety headrest, anti-skid brake system etc.; Be at present apply or on a large scale the technology of operational phase have EBD (Electric Brakeforce Distribution), anti-slip regulation, electronic stabilizing control system, blind spot information system, collision caution system etc.
On some medium and high classes automobiles, is furnished with a kind of blind monitoring system.So-called blind monitoring system, exactly by radar, first-class device of making a video recording, when vehicle travels, the blind area of vehicle both sides is detected, if there are other vehicles to enter blind area, can point out driver at back mirror or other assigned addresses, thus inform that when driver is the preferably opportunity of " doubling ", considerably reduce the accident occurred because of " doubling ".
Such as, the BLIS(BlindSpotInformationSystem of Volvo) blind spot information system, that a camera is respectively installed under two outside rear-view mirrors, 9 meters can be monitored after car, the region that both sides are each wide 3.5 meters, this just vehicle travel in, an invisible visual dead angle from inside rear-view mirror and outside rearview mirror, be referred to as blind area, if there is vehicle to travel in blind area, this car " modified line " is formed dangerous, a red light on vehicle A post (column between vehicle front windshield and driver door) will glimmer, and send buzz alarm, chaufeur is pointed out, now " modified line " is dangerous.
But for the consideration of manufacturing cost, these active and passive safety methods are all be provided on some medium and high classes cars or cross-country car usually, for the Contraction in Site vehicle that power engineering vehicle is such, rarely have configuration.
And, in actual field driver behavior operation process, due to the existence of inside and outside back mirror viewing blind zone, navigating mate normally cannot observe the actual ground situation of vehicle off front wheel front or side coil (i.e. the side coil of right side A post), this brings extreme difficulties and inconvenience to the movement of power engineering vehicle in the place of surface condition complexity and traveling, also has influence on the safety of Contraction in Site and carries out smoothly, fast.
If install above-mentioned blind spot information system additional for existing power engineering vehicle, one be repacking cost higher, and can only in vehicle both sides, rear to blind area warn, cannot solve vehicle right side front the visual field observe a difficult problem; Two is changes that this repacking often needs to relate to the original control path part of automobile, and the repacking to vehicle, also be subject to the restriction of the various regulation of vehicle management department of public security organ, vehicle management functional department is provided with very high threshold to remoulded car, how making the restriction repacking of vehicle being met to the various regulation of vehicle management department, is also a difficult point in actual vehicle facility management.
Under the condition of the various auxiliary driving devices (such as Reverse Sensor, inside/outside back mirror etc.) how be equipped with at existing vehicle, the cost of least cost, chaufeur is helped to observe the actual ground situation of vehicle off front wheel front or side coil, making it grasp the field ground situation of outside vehicle (particularly before vehicle off front wheel, side coil) as far as possible all sidedly, is problem in the urgent need to address in actual field work.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method guaranteeing power engineering vehicle driving safety, it is on the basis of existing auxiliary driving device, make navigating mate can observe the actual ground situation of vehicle off front wheel front or side coil easily, for the driver behavior in arrow path meeting, pulling over observing or complicated ground situation provides visual help, to on-the-spot power construction and maintenance/upkeep operation, bring great convenience, also contribute to improving field activity efficiency and shortening the driving operation time.
Present invention also offers a kind of device guaranteeing power engineering vehicle driving safety, it is under the prerequisite of not changing former car control path, in the scope that relevant laws and regulations allow, by minimum change cost and work capacity, utilize the original video vehicle back radar navigator system of vehicle, achieve the visualization function of vehicle right side side coil environment, contribute to improving power engineering vehicle and be expert at and sail or safety in moving process.
Technical scheme of the present invention is: provide a kind of method guaranteeing power engineering vehicle driving safety, comprise the original navigating instrument with backup camera of vehicle, the image of the backup camera shooting vehicle rear surrounding environment described in it, is transferred in the navigating instrument be arranged in operator's compartment; It is characterized in that: a side-looking camera is set on the housing of the right outside side view mirror of vehicle, for taking the ground/environmental images in front, vehicle right side A post side; By the video output signals of described side-looking camera, corresponding with the video output signals of original backup camera and after connecing, be connected with the video signal input terminal of navigating instrument; The two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera; When vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, and vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera; When vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera; Under the prerequisite of not changing former car control path, utilize the two change-over switch of the original navigating instrument with video vehicle back radar of vehicle, the side-looking camera set up and dibit, realize visual to vehicle right side side coil external environment condition on position of driver, eliminate the vision dead zone of chaufeur in vehicle operation, guarantee the safety in the process of moving of power engineering vehicle.
On the gauge panel that the two change-over switch of dibit described in it is arranged on vehicular drive indoor or operating console.
Described side-looking camera is arranged on below the back housing of vehicle right side outside rear-view mirror, and downward 30 ~ 45 degree of side-looking camera is obliquely installed.
Concrete, first terminals of the two change-over switch of described dibit trigger line end with navigating instrument reverse image and are connected, second terminals are connected with vehicle-mounted+12V power end, 3rd terminals are with the 4th terminals and be connected with the power positive end of side-looking camera after connecing, and the 5th terminals are connected with the power positive end of backup camera; When the two change-over switch of dibit is in primary importance, backup camera work, vehicle-mounted+12V power supply is sent to the first terminals, for the display of trigger navigation instrument from the 5th terminals; When the two change-over switch of dibit is in the second place, vehicle-mounted+12V power supply is from the second terminals to the 4th terminals, power supply is provided to side-looking camera, because the 4th terminals and the 3rd terminals are direct coupled, vehicle-mounted+12V power supply delivers to the first terminals, for the display of trigger navigation instrument from the 3rd terminals.
Present invention also offers a kind of said method that adopts to guarantee the device of power engineering vehicle driving safety, comprise the original navigating instrument with backup camera of vehicle, it is characterized in that: arrange a side-looking camera, described side-looking camera is arranged on the housing of the right outside side view mirror of vehicle; By the video output signals of described side-looking camera, corresponding with the video output signals of original backup camera and after connecing, be connected with the video signal input terminal of navigating instrument; The two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera; When vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, and vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera; When vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera.
After the video output signals line of side-looking camera described in it and the video output signals line parallel of backup camera, be connected with the AV-IN port of navigating instrument.
Wired or wireless mode can be adopted to be connected between the VT of side-looking camera described in it and the AV-IN port of navigating instrument.
The two change-over switch of dibit described in it is Double-position push button formula switch or duplex ship type/rocker switch, and described side-looking camera is embedded clamping camera.
First terminals of the two change-over switch of dibit described in it trigger line end with navigating instrument reverse image and are connected, second terminals are connected with vehicle-mounted+12V power end, 3rd terminals are with the 4th terminals and be connected with the power positive end of side-looking camera after connecing, and the 5th terminals are connected with the power positive end of backup camera; When the two change-over switch of described dibit is placed in primary importance, its first terminals and the 5th terminals are connected, and the second terminals and the 6th terminals are connected; When the two change-over switch of described dibit is placed in the second place, its first terminals and the 3rd terminals are connected, and the second terminals and the 4th terminals are connected.
Compared with the prior art, advantage of the present invention is:
1. utilize the original navigating instrument with backup camera of vehicle, under the prerequisite of not changing former car control path, by minimum change cost and work capacity, allow navigating mate can observe the actual ground situation of vehicle off front wheel front or side coil easily, contribute to guaranteeing the safety in the process of moving of power engineering vehicle;
2. achieve many visuals field observing effect of power engineering vehicle, for the driver behavior in arrow path meeting, pulling over observing or complicated ground situation provides visual help, to on-the-spot power construction and maintenance/upkeep operation, bring great convenience;
3. the circuit changed and increase does not relate to the original control path part of automobile, meets the restriction of the various regulation of vehicle management department, can not affect the security and stability of the original control system of vehicle.
Accompanying drawing explanation
Fig. 1 is the block diagram of the inventive method;
Fig. 2 is the terminal connecting line road figure of the two change-over switch of dibit of the present invention;
Fig. 3 is the shooting area longitudinal extent schematic diagram of side-looking camera;
Fig. 4 is the shooting area lateral extent schematic diagram of side-looking camera;
Fig. 5 is the schematic diagram of side-looking camera installation site on right outside back mirror of the present invention.
In figure, 1 is the housing of the right outside side view mirror of vehicle, and 2 is right side outside rear-view mirror eyeglass, and 3 is side-looking camera, 4 is operator's compartment, and 5 is vehicle right side A post, and 6 is vehicle off front wheel, 7 is the shooting area lateral extent of side-looking camera, 8 is the shooting area longitudinal extent of side-looking camera, and 11 is the first terminals, and 12 is the second terminals, 13 is the 3rd terminals, 14 is the 4th terminals, and 15 is the 5th terminals, and 16 is the 6th terminals.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
In Fig. 1, the invention provides a kind of method guaranteeing power engineering vehicle driving safety, comprise the original navigating instrument with backup camera of vehicle, the image of the backup camera shooting vehicle rear surrounding environment described in it, is transferred in the navigating instrument be arranged in operator's compartment; Method described in it comprises the following steps:
A, a side-looking camera is set on the housing of the right outside side view mirror of vehicle, for taking the ground/environmental images in front, vehicle right side A post side;
B, by the video output signals of described side-looking camera, corresponding with the video output signals of original backup camera and after connecing, be connected with the video signal input terminal of navigating instrument;
C, the two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera;
D, when vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera;
E, when vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera;
F, under the prerequisite of not changing former car control path, utilize the two change-over switch of the original navigating instrument with video vehicle back radar of vehicle, the side-looking camera set up and dibit, realize visual to vehicle right side side coil external environment condition on position of driver, eliminate the vision dead zone of chaufeur in vehicle operation, guarantee the safety in the process of moving of power engineering vehicle.
The technical program is provided with the two change-over switch of a dibit on the indoor gauge panel of vehicular drive or operating console, for switching the on/off of side-looking camera and backup camera power supply; Under the control of the two change-over switch of described dibit, the original navigating instrument of vehicle, under vehicle backing state, shows the picture taken by backup camera; Under the non-state of rolling backward of vehicle, picture taken by display side-looking camera, under the prerequisite of not changing former car control path, utilize the reversing display system of former car, achieve the visual function to the outer image of side coil car on position of driver, for the driver behavior in arrow path meeting, pulling over observing or complicated ground situation, provide visual help, improve the safety under steam of power engineering vehicle.
In fig. 2, the two change-over switch of described dibit is dibit double-throw change-over switch; When switch primary importance, the first terminals 11 and the 5th terminals 15 of dibit double-throw change-over switch are connected, and the second terminals 12 and the 6th terminals 16 are connected; When the switch second place, the first terminals 11 and the 3rd terminals 13 of dibit double-throw change-over switch are connected, and the second terminals 12 and the 4th terminals 14 are connected.
First terminals 11 of the two change-over switch of its dibit trigger line end with navigating instrument reverse image and are connected, second terminals 12 are connected with vehicle-mounted+12V power end, 3rd terminals 13 are with the 4th terminals 14 and be connected with the positive power source terminal of side-looking camera after connecing, and the 5th terminals 15 are connected with the positive power source terminal of backup camera.
When vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, and vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera;
When vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera.
In Fig. 3 and Fig. 4, the method guaranteeing power engineering vehicle driving safety provided by the present invention, the housing 1 of the right outside side view mirror of vehicle is provided with a side-looking camera 3, the described video output signals of side-looking camera is connected with the video signal input terminal of navigating instrument; In operator's compartment 4, gauge panel or operating console (not shown) arrange the two change-over switch of a dibit, under the control of the two change-over switch of dibit, described navigating instrument, under vehicle backing state, shows the picture taken by backup camera; Under the non-state of rolling backward of vehicle, the picture taken by display side-looking camera.
The shooting area longitudinal extent 8 of side-looking camera is as shown in V-type mark region in Fig. 3, and the shooting area lateral extent 7 of side-looking camera is as shown in V-type mark region in Fig. 4.
In Fig. 5, downward 30 ~ 45 degree of described side-looking camera 3 is obliquely installed, for taking on the right side of vehicle right side A post 5 and the continuous image of right front, make chaufeur on its driver's seat, just can observe the ground/surface conditions of vehicle off front wheel 6 front or side coil easily.
For the ease of installing and wiring, the optional mini embedded clamping camera of the side-looking camera described in it, the two change-over switch of described dibit is Double-position push button formula switch or duplex ship type/rocker switch.Owing to there being this series products many available on the market, therefore its concrete model and principle of work no longer describe at this.
Further, after the video output signals line of described side-looking camera and the video output signals line parallel of backup camera, be connected with the video signal input terminal of navigating instrument.
Further, the VT of described side-looking camera is connected with the AV-IN port of navigating instrument.
Wired or wireless mode can be adopted to be connected between the VT of side-looking camera described in it and the AV-IN port of navigating instrument.
Have the product of many navigating instruments, backup camera and embedded clamping camera available on the market, between camera and navigating instrument, the concrete mode of connection of vision signal no longer describes at this, can carry out during actual repacking with reference to the content of its product description.
From the operation master mode of this device, due to side-looking camera and backup camera video output signals and connect, and with video signal input terminal (the AV-IN port of navigating instrument, be commonly called as reverse image line) corresponding connection, then when the two change-over switch of dibit is in primary importance (such as, being in non-down state), backup camera work, power supply is sent to the first terminals from the 5th terminals, the display of trigger navigation instrument.
When the two change-over switch of dibit is in the second place (such as, be in down state) time power supply from the second terminals to the 4th terminals, power supply is provided to side-looking camera, because the 4th terminals and the 3rd terminals are direct coupled, power supply delivers to the first terminals from the 3rd terminals, the display of trigger navigation instrument, and then the visualization function realizing vehicle right side side coil.
Due to side-looking camera and backup camera video output signals and connect, and be provided with the two change-over switch of dibit and carry out electrical source exchange, just carry out the vision signal of complexity, Power convert without components and parts such as relays.
From display effect, in time open side coil visual function, extension reverse gear operates, original back-up video display system can be made to automatically switch to backsight state, realize reversing visual function, and in non-reverse gear situation, open side coil visual function, the then actual ground situation of original back-up video display system display vehicle off front wheel front or side coil, for the driver behavior in the arrow path meeting of navigating mate, pulling over observing or complicated ground situation provides visual help.
Technical solution of the present invention is under the prerequisite of not changing former car control path, utilize original back-up video display system, by minimum change cost and work capacity, achieve the visualization function of the side coil of vehicle right front position, do not affect the safety operation control performance of former car, contribute to improving power engineering vehicle to be expert at and to sail or safety in moving process, to on-the-spot power construction and maintenance/upkeep operation, bring great convenience.
The present invention can be widely used in the repacking of various power engineering vehicle or the facility management field of vehicle.
Claims (5)
1. guarantee a method for power engineering vehicle driving safety, comprise the original navigating instrument with backup camera of vehicle, the image of the backup camera shooting vehicle rear surrounding environment described in it, is transferred in the navigating instrument be arranged in operator's compartment; The housing of vehicle outside visor arranges a side-looking camera, for taking the ground/environmental images in front, vehicle A post side; It is characterized in that:
By the video output signals of described side-looking camera, corresponding with the video output signals of original backup camera and after connecing, be connected with the video signal input terminal of navigating instrument;
The two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera;
When vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, and vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera;
When vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera;
The described method guaranteeing an electric engineering car driving safety, achieve many visuals field observing effect of power engineering vehicle, for the driver behavior in arrow path meeting, pulling over observing or complicated ground situation provides visual help, to on-the-spot power construction and maintenance/upkeep operation, bring great convenience;
The described method guaranteeing an electric engineering car driving safety, under the prerequisite of not changing former car control path, utilize the two change-over switch of the original navigating instrument with video vehicle back radar of vehicle, the side-looking camera set up and dibit, realize visual to vehicle right side side coil external environment condition on position of driver, eliminate the vision dead zone of chaufeur in vehicle operation, guarantee the safety in the process of moving of power engineering vehicle;
Its circuit changed and increase, does not relate to the original control path part of automobile, meets the restriction of the various regulation of vehicle management department, can not affect the security and stability of the original control system of vehicle;
On the gauge panel that the two change-over switch of dibit described in it is arranged on vehicular drive indoor or operating console;
Side-looking camera described in it is arranged on below the back housing of vehicle right side outside rear-view mirror, and downward 30 ~ 45 degree of side-looking camera is obliquely installed.
2. according to the method guaranteeing power engineering vehicle driving safety according to claim 1, it is characterized in that the first terminals of the two change-over switch of described dibit trigger line end with navigating instrument reverse image and are connected, second terminals are connected with vehicle-mounted+12V power end, 3rd terminals are with the 4th terminals and be connected with the power positive end of side-looking camera after connecing, and the 5th terminals are connected with the power positive end of backup camera;
When the two change-over switch of dibit is in primary importance, backup camera work, vehicle-mounted+12V power supply is sent to the first terminals, for the display of trigger navigation instrument from the 5th terminals;
When the two change-over switch of dibit is in the second place, vehicle-mounted+12V power supply is from the second terminals to the 4th terminals, power supply is provided to side-looking camera, because the 4th terminals and the 3rd terminals are direct coupled, vehicle-mounted+12V power supply delivers to the first terminals, for the display of trigger navigation instrument from the 3rd terminals.
3. the device adopting method described in claim 1 to guarantee power engineering vehicle driving safety, comprise the original navigating instrument with backup camera of vehicle, arrange a side-looking camera, described side-looking camera is arranged on the housing of the right outside side view mirror of vehicle; It is characterized in that:
By the video output signals of described side-looking camera, corresponding with the video output signals of original backup camera and after connecing, be connected with the video signal input terminal of navigating instrument;
The two change-over switch of a dibit is set, for switching power supply and the navigating instrument display energizing signal of side-looking camera and original backup camera;
When vehicle is in state of rolling backward, two for described dibit change-over switch is placed in first switch position, original backup camera normally works, and vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image of navigating instrument display taken by backup camera;
When vehicle is in non-state of rolling backward, two for described dibit change-over switch is placed in second switch position, power supply is provided to described side-looking camera, side-looking camera works, vehicle-mounted+12V power supply exports energizing signal by the two change-over switch of dibit to navigating instrument, the described image taken by navigating instrument display side-looking camera;
The described device guaranteeing an electric engineering car driving safety, achieve many visuals field observing effect of power engineering vehicle, for the driver behavior in arrow path meeting, pulling over observing or complicated ground situation provides visual help, to on-the-spot power construction and maintenance/upkeep operation, bring great convenience;
The described device guaranteeing an electric engineering car driving safety, its circuit changed and increase, does not relate to the original control path part of automobile, meets the restriction of the various regulation of vehicle management department, can not affect the security and stability of the original control system of vehicle;
After the video output signals line of side-looking camera described in it and the video output signals line parallel of backup camera, be connected with the AV-IN port of navigating instrument;
The two change-over switch of dibit described in it is Double-position push button formula switch or duplex ship type/rocker switch, and described side-looking camera is embedded clamping camera.
4., according to the device guaranteeing power engineering vehicle driving safety according to claim 3, it is characterized in that wired or wireless mode can being adopted to be connected between the VT of described side-looking camera and the AV-IN port of navigating instrument.
5. according to the device guaranteeing power engineering vehicle driving safety according to claim 3, it is characterized in that the first terminals of the two change-over switch of described dibit trigger line end with navigating instrument reverse image and are connected, second terminals are connected with vehicle-mounted+12V power end, 3rd terminals are with the 4th terminals and be connected with the power positive end of side-looking camera after connecing, and the 5th terminals are connected with the power positive end of backup camera;
When the two change-over switch of described dibit is placed in primary importance, its first terminals and the 5th terminals are connected, and the second terminals and the 6th terminals are connected;
When the two change-over switch of described dibit is placed in the second place, its first terminals and the 3rd terminals are connected, and the second terminals and the 4th terminals are connected.
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| CN201210526010.XA CN102941826B (en) | 2012-12-07 | 2012-12-07 | A kind of method and device guaranteeing power engineering vehicle driving safety |
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| CN201210526010.XA CN102941826B (en) | 2012-12-07 | 2012-12-07 | A kind of method and device guaranteeing power engineering vehicle driving safety |
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| CN103442197B (en) * | 2013-08-30 | 2017-08-01 | 深圳市华宝电子科技有限公司 | A kind of device and method for recording road test of driver-training car |
| CN105516677A (en) * | 2015-12-30 | 2016-04-20 | 中国煤炭科工集团太原研究院有限公司 | Mining safe driving and accident analysis video recording system |
| CN109318820B (en) * | 2018-11-29 | 2023-10-24 | 湖南大学 | Multi-functional quick change engineering car of urban and rural road |
| CN109572610B (en) * | 2018-12-26 | 2024-07-26 | 广东好帮手丰诺电子科技有限公司 | Automobile right rearview mirror with double cameras, driving auxiliary system and control method thereof |
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| CN201366993Y (en) * | 2009-02-17 | 2009-12-23 | 林波 | Video unit for eliminating automobile A-column blind area |
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| CN102941826A (en) | 2013-02-27 |
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