CN105704450A - A vehicle-mounted wireless camera control method and an apparatus thereof - Google Patents
A vehicle-mounted wireless camera control method and an apparatus thereof Download PDFInfo
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- CN105704450A CN105704450A CN201610061635.1A CN201610061635A CN105704450A CN 105704450 A CN105704450 A CN 105704450A CN 201610061635 A CN201610061635 A CN 201610061635A CN 105704450 A CN105704450 A CN 105704450A
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- 238000001514 detection method Methods 0.000 claims description 21
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention provides a vehicle-mounted wireless camera control method and an apparatus thereof. The method comprises the following steps: S10, the distance between a vehicle-mounted system and a hand-held terminal is monitored, and when the distance is less than a preset threshold value Dt, vehicle-mounted system turn-on signals are generated; S20, the vehicle-mounted system receives the turn-on signals to be turned on and keeps turn-off of a display screen; S40, the vehicle-mounted system controls a wireless rear view camera module to be powered on to complete pairing connection; and S50, when the vehicle-mounted system detects ACC signals, the display screen is turned on; when the vehicle-mounted system detects car-backing signals, a video input channel of the display screen is switched to the wireless rear view camera to display car-backing images. The method and apparatus realize extremely short time-delay of the wireless vehicle-mounted car-backing image system during car backing, thereby greatly improving user experience.
Description
Technical field
The present invention relates to automobile ancillary technique field, particularly relate to a kind of onboard wireless camera control method and device。
Background technology
Automobile has become the extensively universal vehicles, and vehicle safety is also increasingly paid attention to by people。Current vehicle entertainment system (hereinafter referred to as car machine) has become the standard configuration of major part automobile, and reverse image function has also become the function that most of car car facility are standby, it realizes principle is obtain the image of rear view of vehicle when reversing by being arranged on the photographic head of vehicle tail, car machine displays, prevent from meeting pedestrian or barrier when reversing, it is ensured that the safety of reversing。Current reverse image system is the mode adopting wire signal to connect mostly, namely the image of photographic head requires over video line and is input to car machine system, wiring comparatively bothers, video line is arranged into headstock from the tailstock, generally requiring professional uses the instrument of specialty just can complete, wire rod cost and installation cost are higher, and installation process is complicated。Along with the development of wireless technology, wireless vehicle mounted reverse image system is more and more universal, enormously simplify installation steps, improves Consumer's Experience。But, current wireless vehicle mounted reverse image system adopts Wi-Fi module to be connected with the pairing of car machine mostly, starts to from Wi-Fi and is connected with the pairing foundation of car machine, consuming time longer much than traditional wired reverse image system, usually reaches intolerable degree。If but allowing Wi-Fi module and car machine be always maintained at pairing connection status, then Wi-Fi module power consumption is higher, is also easily caused the element quick aging of Wi-Fi module, decreases service life。Therefore, existing wireless vehicle mounted reverse image systems technology haves much room for improvement。
Summary of the invention
The present invention provides a kind of onboard wireless camera control method and device, it is intended to solve defect of the prior art, it is achieved the time delay that wireless vehicle mounted reverse image system is extremely low when reversing, and Consumer's Experience is greatly improved。
For reaching above-mentioned purpose, the technical solution used in the present invention is:
One aspect of the present invention provides a kind of onboard wireless camera control method, including:
S10. the distance between monitoring and handheld terminal, when described distance is less than predetermined threshold value DtTime, produce onboard system starting-up signal；
S20. onboard system accepts described starting-up signal, boots up, and keeps display screen to close；
S40. onboard system control radio car backing camera module powers on, and completes pairing connection；
S50. when onboard system detects ACC signal, open display screen, when astern signal being detected, the video input passage of display screen is switched to radio car backing photographic head, display reversing image。
Further, also include after described step S20:
S30., after onboard system detects driving car door opening signal, next step is entered；
Further, also include after described step S50:
S60. onboard system is not detected by astern signal, and speed is more than predetermined threshold value VdtTime, close the power supply of the connection with radio car backing camera module of the described onboard system and described radio car backing camera module；
S70. onboard system detects that speed is in preset time TrInterior speed is lower than threshold value VrtAnd continue to reduce, the absolute value of deceleration acceleration is more than predetermined threshold value Ar, then step S40 is returned。
Specifically, described Dt=1～20m；
Specifically, described Vdt=50km/h；
Specifically, described Tr=3s, Vrt=20～50km/h, Ar=3～5m/s2。
Another aspect of the present invention provides a kind of onboard wireless shooting head controlling device, including onboard system, radio car backing camera module, handheld terminal module；
Described onboard system includes starting module, ACC detection module, astern signal detection module, status control module, display power module, channel switching module, display module, the second wireless module, enters judge module in advance；
Described starting module, is used for accepting starting-up signal, makes onboard system start shooting；
Whether effective described ACC detection module, be used for detecting automobile ACC signal；
Whether effective described astern signal detection module, be used for detecting astern signal；
Described status control module, is connected with the pairing of wireless camera for controlling onboard system；
Described display power module, for powering to display screen；
Described channel switching module, for switching the output video channel to display screen；
Described display module, is used for showing reversing image；
Described second wireless module, for being connected with wireless camera pairing；
Described pre-entrance judge module includes the first short-distance wireless module, distance calculation module, described first short-distance wireless module, is connected for setting up with handheld terminal；Described distance calculation module, for calculating the distance with handheld terminal；
Described radio car backing camera module includes the first wireless module, image collection module, photographic head power module；
Described first wireless module, for being connected with onboard system pairing；
Described image collection module, for obtaining the reversing image of rear view of vehicle；
Described photographic head power module, for powering to described wireless camera；
Described handheld terminal module includes the second short-distance wireless module, described second short-distance wireless module, is connected for setting up with onboard system。
Further, described onboard system also includes car door signal detection module。
Further, described onboard system also includes velocity measuring module。
The beneficial effects of the present invention is: after the present invention is stopped working by parking of automobile, if be detected that near vehicle, and in running process, if be detected that be about to stop, then complete backup camera to be connected with the wireless pairing of onboard system, achieve the time delay that wireless vehicle mounted reverse image system is extremely low when reversing, Consumer's Experience is greatly improved。
Accompanying drawing explanation
Fig. 1 is the structural representation of the onboard wireless photographic head control of the present invention；
Fig. 2 is another structural representation of the onboard wireless photographic head control of the present invention；
Fig. 3 is another structural representation of the onboard wireless photographic head control of the present invention。
Detailed description of the invention
Specifically illustrate embodiments of the present invention below in conjunction with accompanying drawing, accompanying drawing is only for reference and illustrates to use, and does not constitute the restriction to scope of patent protection of the present invention。
Embodiments of the invention provide a kind of onboard wireless camera control method on the one hand, including:
S10. the distance between monitoring and handheld terminal, when described distance is less than predetermined threshold value DtTime, produce onboard system starting-up signal；
In the specific implementation, described handheld terminal is referred to intelligent vehicle key design principle, determines the distance between onboard system by the mode of short-distance wireless communication, for instance, the function of integrated intelligent car key in smart mobile phone, when entrained handheld terminal is near vehicle certain distance scope DtAfter, handheld terminal sends starting-up signal automatically to onboard system so that it is start。
Described DtIt is 1～20m, it is preferred to 10m。
S20. onboard system accepts described starting-up signal, boots up, and keeps display screen to close；
In the specific implementation, described starting-up signal can obtain from the bus network (such as CAN, LIN etc.) of automobile, it is also possible to arranges short range, wireless signals detecting module in onboard system, when onboard system detects that handheld terminal is at preset range DtStarting-up signal is sent to the controller of onboard system time interior。Although the distance between handheld terminal and onboard system is in preset range, but car owner is likely to not have the intention driven, and therefore onboard system is after powering, for avoiding causing puzzlement to car owner, also for avoiding consuming vehicle-loaded battery electricity quantity, now the display screen of onboard system still remains off。
S40. onboard system control radio car backing camera module powers on, and completes pairing connection；
After onboard system completes to start, send control signal and make radio car backing camera module power on initializations, and complete with onboard system to match and be connected。Described connected mode is Wi-Fi。
S50. when onboard system detects ACC signal, open display screen, when astern signal being detected, the video input passage of display screen is switched to radio car backing photographic head, display reversing image。
When onboard system detects ACC signal, illustrating that vehicle starts, onboard system should open display screen for car owner's operation；And when astern signal being detected, the video input passage of display screen is switched to radio car backing photographic head by the controller of onboard system, the picture of the rear view of vehicle shot by described photographic head shows on a display screen。It is connected owing to onboard system has pre-build with wireless camera head module, therefore when vehicle backing, it is possible to quickly being displayed by reversing picture, time delay is minimum, substantially increases Consumer's Experience。
In one embodiment of the invention, also include after described step S20:
S30., after onboard system detects driving car door opening signal, next step is entered；
After driving car door opening being detected, illustrating that car owner is about to enter driving cabin, the probability carrying out driving is bigger, it should complete the preparation of display reversing image。By increasing this step, further increasing the accuracy of driving intention detection, thus improve Consumer's Experience, reducing energy consumption。
In one embodiment of the invention, also include after described step S50:
S60. onboard system is not detected by astern signal, and speed is more than predetermined threshold value VdtTime, close the power supply of the connection with radio car backing camera module of the described onboard system and described radio car backing camera module；
When onboard system is not detected by astern signal, and speed is more than predetermined threshold value VdtTime (such as 50km/h), illustrate that vehicle has been in normal transport condition, close the power supply of the onboard system connection with radio car backing camera module and described radio car backing camera module, it is possible to reduce energy consumption。
S70. onboard system detects that speed is in preset time TrInterior speed is lower than threshold value VrtAnd continue to reduce, the absolute value of deceleration acceleration is more than predetermined threshold value Ar, then step S40 is returned。
Specifically, described Tr=3s, Vrt=20～50km/h, Ar=3～5m/s2。
Onboard system can in preset time Tr(such as 3s) interior continuous detecting speed, works as preset time TrInterior speed is lower than all threshold value Vrt(20～50km/h, it is preferred to 30km/h) and continue to reduce；By calculating the absolute value of deceleration acceleration more than predetermined threshold value Ar(3～5m/s2, it is preferred to 4m/s2), it was shown that vehicle is about to stop, and next very likely carries out the action moveed backward, therefore, now onboard system control radio car backing camera module powers on, and completes pairing connection, quickly video channel can be switched to reversing image after user moves backward, further increase Consumer's Experience。
As it is shown in figure 1, another aspect of the present invention provides a kind of onboard wireless shooting head controlling device, including onboard system, radio car backing camera module, handheld terminal module；
Described onboard system includes starting module, ACC detection module, astern signal detection module, status control module, display power module, channel switching module, display module, the second wireless module, enters judge module in advance；
Described starting module, is used for accepting starting-up signal, makes onboard system start shooting；
Whether effective described ACC detection module, be used for detecting automobile ACC signal；
Whether effective described astern signal detection module, be used for detecting astern signal；
Described status control module, is connected with the pairing of wireless camera for controlling onboard system；
Described display power module, for powering to display screen；
Described channel switching module, for switching the output video channel to display screen；
Described display module, is used for showing reversing image；
Described second wireless module, for being connected with wireless camera pairing；
Described pre-entrance judge module includes the first short-distance wireless module, distance calculation module, described first short-distance wireless module, is connected for setting up with handheld terminal；Described distance calculation module, for calculating the distance with handheld terminal；
Described radio car backing camera module includes the first wireless module, image collection module, photographic head power module；
Described first wireless module, for being connected with onboard system pairing；
Described image collection module, for obtaining the reversing image of rear view of vehicle；
Described photographic head power module, for powering to described wireless camera；
Described handheld terminal module includes the second short-distance wireless module, described second short-distance wireless module, is connected for setting up with onboard system。
The work process of the onboard wireless shooting head controlling device of the present invention is:
Second short-distance wireless module of pre-the first short-distance wireless module and handheld terminal entering judge module is set up and is connected, and distance calculation module calculates and monitor the distance between onboard system, when described distance is less than predetermined threshold value DtTime, produce onboard system starting-up signal；
The starting module of onboard system accepts described starting-up signal, boot up, although the distance between handheld terminal and onboard system is in preset range, but car owner is likely to not have the intention driven, therefore onboard system is after powering, for avoiding causing puzzlement to car owner, also for avoiding consuming vehicle-loaded battery electricity quantity, starting module controls display power module and is closed, to keep display screen to close；
The state controlling module controls photographic head power module of onboard system is powered to radio car backing camera module, and the first wireless module of the second wireless module and wireless camera controlling onboard system completes pairing and is connected；
When the ACC detection module of onboard system detects ACC signal effectively (being generally high level), control display power module and power to display screen, open display screen；When astern signal detection module detects astern signal, the video input passage of display screen is switched to radio car backing photographic head by channel switching module, shows reversing image on display module。
As in figure 2 it is shown, in one embodiment of the invention, described onboard system also includes car door signal detection module。After car door signal detection module detects driving car door opening, illustrating that car owner is about to enter driving cabin, the probability carrying out driving is relatively big, then complete the preparation of display reversing image。By increasing this module, further increasing the accuracy of driving intention detection, thus improve Consumer's Experience, reducing energy consumption。
As it is shown on figure 3, in one embodiment of the invention, described onboard system also includes velocity measuring module。The reversing detection module of onboard system is not detected by astern signal, illustrate that vehicle is without carrying out car backing operation, and the velocity measuring module of onboard system is when speed being detected more than predetermined threshold value, vehicle normally travels, for a comparatively long period of time, will not carrying out car backing operation, status control module closes the power supply of the connection with radio car backing camera module of the described onboard system and described radio car backing camera module, save energy consumption, and extend the service life of wireless module。And, the velocity measuring module of onboard system detects that speed speed in Preset Time lower than threshold value and continues to reduce, more than predetermined threshold value, the absolute value of deceleration acceleration shows that vehicle is about to stop, next the action moveed backward very likely is carried out, therefore, now the state controlling module controls radio car backing camera module of onboard system powers on, and completes pairing connection, quickly video channel can be switched to reversing image after user moves backward, further increase Consumer's Experience。
Above disclosed it is only presently preferred embodiments of the present invention, it is impossible to limit the scope of the present invention with this, the equivalent variations therefore made according to the present patent application the scope of the claims, still belong to the scope that the present invention contains。
Claims (8)
1. an onboard wireless camera control method, it is characterised in that including:
S10. the distance between monitoring and handheld terminal, when described distance is less than predetermined threshold value DtTime, produce onboard system starting-up signal；
S20. onboard system accepts described starting-up signal, boots up, and keeps display screen to close；
S40. onboard system control radio car backing camera module powers on, and completes pairing connection；
S50. when onboard system detects ACC signal, open display screen, when astern signal being detected, the video input passage of display screen is switched to radio car backing photographic head, display reversing image。
2. onboard wireless camera control method according to claim 1, it is characterised in that also include after described step S20:
S30., after onboard system detects driving car door opening signal, next step is entered。
3. onboard wireless camera control method according to claim 1 and 2, it is characterised in that also include after described step S50:
S60. onboard system is not detected by astern signal, and speed is more than predetermined threshold value VdtTime, close the power supply of the connection with radio car backing camera module of the described onboard system and described radio car backing camera module；
S70. onboard system detects that speed is in preset time TrInterior speed is lower than threshold value VrtAnd continue to reduce, the absolute value of deceleration acceleration is more than predetermined threshold value Ar, then step S40 is returned。
4. onboard wireless camera control method according to claim 1, it is characterised in that described Dt=1～20m。
5. onboard wireless camera control method according to claim 3, it is characterised in that described Vdt=50km/h, described Tr=3s, Vrt=20～50km/h, Ar=3～5m/s2。
6. an onboard wireless shooting head controlling device, it is characterised in that including: onboard system, radio car backing camera module, handheld terminal module；
Described onboard system includes starting module, ACC detection module, astern signal detection module, status control module, display power module, channel switching module, display module, the second wireless module, enters judge module in advance；
Described starting module, is used for accepting starting-up signal, makes onboard system start shooting；
Whether effective described ACC detection module, be used for detecting automobile ACC signal；
Whether effective described astern signal detection module, be used for detecting astern signal；
Described status control module, is connected with the pairing of wireless camera for controlling onboard system；
Described display power module, for powering to display screen；
Described channel switching module, for switching the output video channel to display screen；
Described display module, is used for showing reversing image；
Described second wireless module, for being connected with wireless camera pairing；
Described pre-entrance judge module includes the first short-distance wireless module, distance calculation module, described first short-distance wireless module, is connected for setting up with handheld terminal；Described distance calculation module, for calculating the distance with handheld terminal；
Described radio car backing camera module includes the first wireless module, image collection module, photographic head power module；
Described first wireless module, for being connected with onboard system pairing；
Described image collection module, for obtaining the reversing image of rear view of vehicle；
Described photographic head power module, for powering to described wireless camera；
Described handheld terminal module includes the second short-distance wireless module, described second short-distance wireless module, is connected for setting up with onboard system。
7. onboard wireless according to claim 6 shooting head controlling device, it is characterised in that described onboard system also includes car door signal detection module。
8. the onboard wireless shooting head controlling device according to claim 7 or 8, it is characterised in that described onboard system also includes velocity measuring module。
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| CN201610061635.1A CN105704450A (en) | 2016-01-28 | 2016-01-28 | A vehicle-mounted wireless camera control method and an apparatus thereof |
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| CN110620904A (en) * | 2019-08-30 | 2019-12-27 | 上海能塔智能科技有限公司 | Internet of vehicles system and control method and device of vehicle-mounted camera thereof |
| CN111901612A (en) * | 2019-05-05 | 2020-11-06 | 东莞潜星电子科技有限公司 | Non-delay automobile streaming media system and working method thereof |
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| CN114827534A (en) * | 2022-04-02 | 2022-07-29 | 合肥杰发科技有限公司 | Display method of vehicle detection image and vehicle-mounted device |
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Application publication date: 20160622 |