CN109895630A - Automobile automatic speed control system and method before a kind of signal lamp - Google Patents
Automobile automatic speed control system and method before a kind of signal lamp Download PDFInfo
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- CN109895630A CN109895630A CN201910145159.5A CN201910145159A CN109895630A CN 109895630 A CN109895630 A CN 109895630A CN 201910145159 A CN201910145159 A CN 201910145159A CN 109895630 A CN109895630 A CN 109895630A
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Abstract
The invention discloses automobile automatic speed control system and methods before a kind of signal lamp, obtain precise time using the first time service module in signal generation apparatus and are sent to the first control module；First control module sends current time information to electrooptic conversion module, and current time information emits free space optical communication signal by light emitting antenna after electrooptic conversion module is handled；Free space optical communication signal is sent to computing module after light receiver aerial and photoelectric conversion module are received and handled, and the sending instant of signal generation apparatus is calculated by computing module；Second time service module gains freedom time of reception of space optical communication signal, and is sent to computing module；Computing module calculates automobile at a distance from signal lamp by the time difference, this distance is sent to the second control module being mounted on automobile by communication module, and then determines to control present speed to how many.The present invention passes through free space optical communication technology precise measurement automobile at a distance from traffic lights, and then realizes the cruise control of automobile.
Description
Technical field
The invention belongs to traffic control and automatic Pilot technical fields, and in particular to automobile cruise control before a kind of signal lamp
System and method, it is specifically a kind of that pinpoint vapour is carried out by free space optical communication technology before traffic lights
Vehicle automatic speed control system and method.
Background technique
With the growth year by year of domestic automobile ownership, the enormous amount of annual traffic accident, and occur in traffic signals
Traffic accident before lamp in total quantity in occupation of significant proportion, trace it to its cause mainly be exactly speed it is too fast, not by traffic signals
Lamp traveling etc..Motor vehicle, should be according to traffic lights, traffic sign, traffic marking or traffic-police by intersection
Commander pass through；When the intersection commanded by no traffic lights, traffic sign, traffic marking or traffic-police,
Should slow down, and make the automobile of pedestrian and priority pass leading.Therefore, when passing through traffic lights, automobile should be by
Decrescence even Stop and give way for speed.
Free space optical communication refers to using light wave as carrier, and the communication technology of information is transmitted in vacuum or atmosphere.Freely
Space optical communication has frequency spectrum unrestricted, and transmission rate is high, and antenna aperture is small, and terminal is low in energy consumption, small in size, light-weight, and
With good anti-interference and anti-intercepting and capturing performance.
Therefore, how can be automatically controlled based on free space optical communication technology realization automobile when passing through traffic lights
Speed prevents having extraordinary application prospect since artificial factor leads to automobile quickly through signal lamp or makes a dash across the red light.
Summary of the invention
In order to realize that automobile can automatically control speed when passing through traffic lights, prevent from causing due to artificial factor
Automobile is quickly through signal lamp or makes a dash across the red light, and the invention proposes automobile automatic speed control system and methods before a kind of signal lamp, leads to
Free space optical communication technology precise measurement automobile is crossed at a distance from traffic lights, and then realizes the side of automobile cruise control
Method.
It realizes above-mentioned technical purpose, reaches above-mentioned technical effect, the invention is realized by the following technical scheme:
In a first aspect, the present invention provides automobile automatic speed control systems before a kind of signal lamp, comprising:
Signal generation apparatus, the signal generation apparatus include the first time service module, the first control module, electro-optic conversion mould
Block and light emitting antenna；
Automatic speed control device, the automatic speed control device include the second time service module, computing module, communication module, second
Control module, light receiver aerial and photoelectric conversion module；
First time service module obtains precise time and is sent to the first control module；First control module receives
To after vernier time signal, current time information is sent to electrooptic conversion module with the fixed cycle, at electrooptic conversion module
Free space optical communication signal is launched outward by light emitting antenna after reason；
The free space optical communication signal is sent to meter after light receiver aerial and photoelectric conversion module are received and handled
Module is calculated, the sending instant of signal generation apparatus is calculated by computing module；Second time service module gains freedom spatial light
The time of reception of signal of communication, and it is sent to the computing module；Computing module according to the sending instant of signal generation apparatus with
The difference of the time of reception of automatic speed control device calculates the delivery time of free space optical communication signal, so calculate automobile with
The distance of signal lamp will be sent at a distance from calculated automobile and signal lamp finally by communication module and be mounted on automobile
Second control module, the second control module control speed to corresponding speed according to this distance.
Preferably, the coverage area of the light emitting antenna for under signal lamp stop line to the institute the line that reduces speed now
There is lane, so that all automobiles within this range can receive the free space optical communication letter of signal generation apparatus sending
Number.
Preferably, the light emitting antenna is optical lens, for emitting optical signal.
Preferably, the light receiver aerial is optical lens, for receiving optical signal.
Preferably, first time service module includes the first GPS signal antenna being sequentially connected and the first GPS module, or
Person includes the first BDS signal antenna being sequentially connected and the first BDS module.
Preferably, second time service module includes the second GPS signal antenna being sequentially connected and the second GPS module, or
Person includes the 2nd BDS signal antenna being sequentially connected and the 2nd BDS module.
Second aspect, the present invention provides a kind of automobile cruise control methods before signal lamp, comprising the following steps:
Precise time is obtained using the first time service module in signal generation apparatus and is sent to the first control module；It is described
After first control module receives vernier time signal, current time information is sent to electrooptic conversion module with the fixed cycle,
Free space optical communication signal is launched outward by light emitting antenna after electrooptic conversion module is handled；
It is sent to using light receiver aerial and photoelectric conversion module reception and after handling the free space optical communication signal
Computing module is calculated the sending instant of signal generation apparatus by computing module；
The time of reception of automatic speed control device is obtained using the second time service module in automatic speed control device, and is sent to institute
State computing module；
Computing module is calculated according to the difference of the sending instant of signal generation apparatus and the time of reception of automatic speed control device
The delivery time of free space optical communication signal, and then automobile is calculated at a distance from signal lamp, it will finally by communication module
The second control module being mounted on automobile is sent at a distance from calculated automobile and signal lamp, the second control module is according to this
Distance controls speed to corresponding speed.
Preferably, the coverage area of the light emitting antenna for under signal lamp stop line to the institute the line that reduces speed now
There is lane, so that all automobiles within this range can receive the free space optical communication letter of signal generation apparatus sending
Number.
Preferably, the light emitting antenna and light receiver aerial are optical lens, are respectively used to emit and receive light letter
Number.
Preferably, first time service module includes the first GPS signal antenna being sequentially connected and the first GPS module, or
Person includes the first BDS signal antenna being sequentially connected and the first BDS module；Second time service module includes be sequentially connected
Two GPS signal antennas and the second GPS module, or including the 2nd BDS signal antenna being sequentially connected and the 2nd BDS module.
Compared with prior art, beneficial effects of the present invention:
(1) signal generation apparatus being mounted in the present invention on Traffic signal post is fexible unit, need to only be sent out in fixed time
Fix information is sent, it is unrelated with infield, environmental characteristics.
(2) present invention in free space optical communication be linear transmission, without consider reflection, refraction etc. influence times because
Element；According to wireless communication, reflection, refraction will lead to the inaccuracy of ranging localization.
(3) if computing module and the second control module are merged on car running computer in the present invention, communication mould can be saved
Block, that is to say, that existing automobile need to only increase part of module and cruise control function of the present invention can be realized in function, convenient
It promotes.
Detailed description of the invention
Fig. 1 is free space optical communication connection schematic diagram in the automatic speed control system of an embodiment of the present invention；
Fig. 2 is the signal generation apparatus structural schematic diagram of an embodiment of the present invention；
Fig. 3 is the automatic speed control device structural schematic diagram of an embodiment of the present invention；
The automatic speed control system and positioning and Computational Method of Velocity Measurement schematic diagram in method that Fig. 4 is an embodiment of the present invention；
Wherein:
1- traffic signals lamp stand；2- signal generation apparatus；21- the first GPS signal antenna；The first GPS module of 22-；23-
One control module；24- electrooptic conversion module；25- light emitting antenna；3- automatic speed control device；31- the second GPS signal antenna；
The second GPS module of 32-；33- computing module；34- communication module；35- photoelectric conversion module；36- light receiver aerial；37- second
Control module；4- deceleration line；5- automobile；6- stop line.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
Embodiment 1
The embodiment of the invention provides automobile automatic speed control systems before a kind of signal lamp to specifically include as shown in Figs 1-4:
Signal generation apparatus 2 and automatic speed control device 3；
The signal generation apparatus 2 is for being mounted on traffic signals lamp stand 1, as shown in Figure 2 comprising be sequentially connected
First time service module, the first control module 23, electrooptic conversion module 24 and light emitting antenna 25；
First time service module obtains precise time, and the precise time is sent to first control module
23, in the preferred embodiment of the embodiment of the present invention, first time service module includes the first GPS signal day being sequentially connected
Line 21 and the first GPS module 22, or including the first BDS signal antenna being sequentially connected and the first BDS module；First control
Molding block 23 sends current time information to electrooptic conversion module 24 after receiving vernier time signal, with fixed cycle T,
The content of i.e. first control apparatus module 23 is sending instant t1、t2、t3……；The electrooptic conversion module 24 is worked as what is received
Preceding time information is sent to the light emitting antenna 25 after being converted into optical signal, launches outward freedom by the light emitting antenna 25
Space optical communication signal, it is preferable that the coverage area of the light emitting antenna 25 be under signal lamp stop line 6 to reducing speed now
All lanes between line 4, so that all automobiles 5 within this range can receive the freedom of the sending of signal generation apparatus 2
Space optical communication signal；
As shown in figure 3, the automatic speed control device 3 includes the second time service module being sequentially connected, computing module 33, communication
Module 34, the second control unit 37, further include the photoelectric conversion module 35 and light receiver aerial 36 being sequentially connected, and the photoelectricity turns
The output end of mold changing block 35 is connected with the input terminal of the computing module 33；In the preferred embodiment of the embodiment of the present invention, institute
Stating the second time service module includes the second GPS signal antenna 31 being sequentially connected and the second GPS module 32, or including being sequentially connected
The 2nd BDS signal antenna and the 2nd BDS module；
The light receiver aerial 36 receives the free space optical communication signal issued by light emitting antenna 25, and is sent to institute
Photoelectric conversion module 35 is stated, the free space optical communication signal received is converted into telecommunications via the photoelectric conversion module 35
The computing module 33 is sent to after number, the computing module calculates signal generation apparatus 2 based on the electric signal received
Sending instant；Second time service module gains freedom time of reception of space optical communication signal, i.e. the second time service module receives
The content arrived is time of reception tr1、tr2、tr3..., and it is sent to the computing module 33；Computing module 33 occurs according to signal
The difference of the time of reception of the sending instant and automatic speed control device of device calculates free space optical communication signal in the biography in space
The time is sent, and then calculates automobile and signal lamp distance s1、s2、s3..., it is calculated finally by communication module 34 by described
Automobile and signal lamp at a distance from be sent in the second control module 37 on automobile, carry out corresponding speed control, realize reduction of speed
Pass through the purpose stopped before signal lamp or signal lamp；Further, if by the function of the second control module 37 and computing module 33
It is all integrated on car running computer, then can save communication module 34.
Embodiment 2
Based on inventive concept same as Example 1, automobile is automatic before a kind of signal lamp is provided in the embodiment of the present invention
Speed control method, as shown in figures 1-4, specifically includes the following steps:
Precise time is obtained using the first time service module in signal generation apparatus 2 and is sent to the first control module 23；
After first control module 23 receives vernier time signal, when sending current to electrooptic conversion module 24 with the fixed cycle
Information is carved, i.e. the transmission content of the first control module 23 is sending instant t1、t2、t3..., after the processing of electrooptic conversion module 24
Free space optical communication signal is launched outward by light emitting antenna 25；Preferably, the coverage area of the light emitting antenna 25
For stop line 6 is to all lanes the line 4 that reduces speed now under signal lamp, so that the equal energy of all automobiles 5 within this range
Receive the free space optical communication signal of signal generation apparatus sending；The light emitting antenna 25 is optical lens, for sending out
Penetrate optical signal；First time service module includes the first GPS signal antenna 21 being sequentially connected and the first GPS module 22, or
Including the first BDS signal antenna being sequentially connected and the first BDS module；
Using the light receiver aerial 36 and the reception of photoelectric conversion module 35 in automatic speed control device 3 and handle described freely empty
Between be sent to computing module 33 after optic communication signal, the sending instant of signal generation apparatus is calculated by computing module 33；It is preferred that
Ground, the light receiver aerial 36 is optical lens, for receiving optical signal；
The time of reception of automatic speed control device, the i.e. content that the second time service module receives are obtained using the second time service module
For time of reception tr1、tr2、tr3..., and it is sent to the computing module 33；In a kind of specific embodiment party of the embodiment of the present invention
In formula, second time service module includes the second GPS signal antenna 31 being sequentially connected and the second GPS module 32, in the present invention
In another specific embodiment of embodiment, second time service module include the 2nd BDS signal antenna that is sequentially connected and
2nd BDS module；
Computing module 33 is calculated according to the sending instant of signal generation apparatus and the difference of the time of reception of automatic speed control device
The delivery time of free space optical communication signal out, and then calculate automobile and signal lamp distance s1、s2、s3..., finally lead to
The second control module 37 being mounted on automobile will be sent to by crossing communication module 34 at a distance from calculated automobile and signal lamp, the
Two control modules control speed to corresponding speed according to this distance.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. automobile automatic speed control system before a kind of signal lamp characterized by comprising
Signal generation apparatus, the signal generation apparatus include the first time service module, the first control module, electrooptic conversion module and
Light emitting antenna；
Automatic speed control device, the automatic speed control device include the second time service module, computing module, communication module, the second control
Module, light receiver aerial and photoelectric conversion module；
First time service module obtains precise time and is sent to the first control module；First control module receives essence
After true time signal, current time information is sent to electrooptic conversion module with the fixed cycle, after electrooptic conversion module is handled
Free space optical communication signal is launched outward by light emitting antenna；
The free space optical communication signal is sent to calculating mould after light receiver aerial and photoelectric conversion module are received and handled
Block is calculated the sending instant of signal generation apparatus by computing module；Second time service module gains freedom space optical communication
The time of reception of signal, and it is sent to the computing module；Computing module is according to the sending instant of signal generation apparatus and automatic
The difference of the time of reception of speed-controlling device calculates the delivery time of free space optical communication signal, and then calculates automobile and signal
The distance of lamp will be sent to second be mounted on automobile at a distance from calculated automobile and signal lamp finally by communication module
Control module, the second control module control speed to corresponding speed according to this distance.
2. automobile automatic speed control system before a kind of signal lamp according to claim 1, it is characterised in that: the light emitting day
The coverage area of line be under signal lamp stop line to all lanes the line that reduces speed now so that within this range own
Automobile can receive the free space optical communication signal of signal generation apparatus sending.
3. automobile automatic speed control system before a kind of signal lamp according to claim 1, it is characterised in that: the light emitting day
Line is optical lens, for emitting optical signal.
4. automobile automatic speed control system before a kind of signal lamp according to claim 1, it is characterised in that: the light-receiving day
Line is optical lens, for receiving optical signal.
5. automobile automatic speed control system before a kind of signal lamp according to claim 1, it is characterised in that: first time service
Module includes the first GPS signal antenna being sequentially connected and the first GPS module, or the first BDS signal including being sequentially connected
Antenna and the first BDS module.
6. automobile automatic speed control system before a kind of signal lamp according to claim 1, it is characterised in that: second time service
Module includes the second GPS signal antenna being sequentially connected and the second GPS module, or the 2nd BDS signal including being sequentially connected
Antenna and the 2nd BDS module.
7. a kind of automobile cruise control method before signal lamp, which comprises the following steps:
Precise time is obtained using the first time service module in signal generation apparatus and is sent to the first control module；Described first
After control module receives vernier time signal, current time information is sent to electrooptic conversion module with the fixed cycle, through electricity
Free space optical communication signal is launched outward by light emitting antenna after light module processing；
Calculating is sent to using light receiver aerial and photoelectric conversion module reception and after handling the free space optical communication signal
Module is calculated the sending instant of signal generation apparatus by computing module；
The time of reception of automatic speed control device is obtained using the second time service module in automatic speed control device, and is sent to the meter
Calculate module；
Computing module calculates freedom according to the difference of the sending instant of signal generation apparatus and the time of reception of automatic speed control device
The delivery time of space optical communication signal, and then automobile is calculated at a distance from signal lamp, it will be calculated finally by communication module
The second control module being mounted on automobile is sent at a distance from automobile out and signal lamp, the second control module is according to this distance
Speed is controlled to corresponding speed.
8. automobile cruise control method before a kind of signal lamp according to claim 7, it is characterised in that: the light emitting day
The coverage area of line be under signal lamp stop line to all lanes the line that reduces speed now so that within this range own
Automobile can receive the free space optical communication signal of signal generation apparatus sending.
9. automobile cruise control method before a kind of signal lamp according to claim 7, it is characterised in that: the light emitting day
Line and light receiver aerial are optical lens, are respectively used to emit and receive optical signal.
10. automobile cruise control method before a kind of signal lamp according to claim 7, it is characterised in that: described first awards
When module include the first GPS signal antenna being sequentially connected and the first GPS module, or the letter of the first BDS including being sequentially connected
Number antenna and the first BDS module；Second time service module includes the second GPS signal antenna and the 2nd GPS mould being sequentially connected
Block, or including the 2nd BDS signal antenna being sequentially connected and the 2nd BDS module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145159.5A CN109895630A (en) | 2019-02-27 | 2019-02-27 | Automobile automatic speed control system and method before a kind of signal lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145159.5A CN109895630A (en) | 2019-02-27 | 2019-02-27 | Automobile automatic speed control system and method before a kind of signal lamp |
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| CN109895630A true CN109895630A (en) | 2019-06-18 |
Family
ID=66945575
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| CN201910145159.5A Pending CN109895630A (en) | 2019-02-27 | 2019-02-27 | Automobile automatic speed control system and method before a kind of signal lamp |
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| CN106683463A (en) * | 2016-12-29 | 2017-05-17 | 中国电子科技集团公司第二十七研究所 | Green light passage device based on satellite navigation system and application method thereof |
| KR20180065142A (en) * | 2016-12-07 | 2018-06-18 | 서울과학기술대학교 산학협력단 | The apparatus and method of indoor positioning with indoor posioning moudule |
| CN208044059U (en) * | 2017-12-26 | 2018-11-02 | 河南科技大学 | A kind of laser ranging system based on temporal information coding |
| KR20190018958A (en) * | 2017-08-16 | 2019-02-26 | 주식회사 케이티 | System for transmitting and receiving traffic signal information and an operation method thereof |
-
2019
- 2019-02-27 CN CN201910145159.5A patent/CN109895630A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103546214A (en) * | 2013-10-19 | 2014-01-29 | 西安邮电大学 | Image communication system based on visible light |
| CN205665530U (en) * | 2016-06-03 | 2016-10-26 | 北京万集科技股份有限公司 | Bus or train route is driver assistance system in coordination based on laser detects and communication |
| KR20180065142A (en) * | 2016-12-07 | 2018-06-18 | 서울과학기술대학교 산학협력단 | The apparatus and method of indoor positioning with indoor posioning moudule |
| CN106683463A (en) * | 2016-12-29 | 2017-05-17 | 中国电子科技集团公司第二十七研究所 | Green light passage device based on satellite navigation system and application method thereof |
| KR20190018958A (en) * | 2017-08-16 | 2019-02-26 | 주식회사 케이티 | System for transmitting and receiving traffic signal information and an operation method thereof |
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Application publication date: 20190618 |
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