CN109050526A - A kind of anti-auto-safety mechanism and its control method to knock into the back and flexibility is braked based on optical communication - Google Patents
A kind of anti-auto-safety mechanism and its control method to knock into the back and flexibility is braked based on optical communication Download PDFInfo
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- CN109050526A CN109050526A CN201811123432.6A CN201811123432A CN109050526A CN 109050526 A CN109050526 A CN 109050526A CN 201811123432 A CN201811123432 A CN 201811123432A CN 109050526 A CN109050526 A CN 109050526A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 108
- 238000004891 communication Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000033001 locomotion Effects 0.000 claims abstract description 32
- 230000001133 acceleration Effects 0.000 claims description 17
- 238000001228 spectrum Methods 0.000 claims description 11
- 230000035484 reaction time Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 206010039203 Road traffic accident Diseases 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 241000736199 Paeonia Species 0.000 description 1
- 235000006484 Paeonia officinalis Nutrition 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/801—Lateral distance
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
Abstract
The present invention discloses a kind of anti-auto-safety mechanism and its control method to knock into the back and flexibility is braked based on optical communication, device includes pilot controller and the brake lamp with optical signal generator connecting with pilot controller, optical signal receiver and distance measuring sensor, brake lamp with optical signal generator is set to automobile tail and uses as brake lamp, optical signal receiver and distance measuring sensor are respectively arranged on the headstock front end of automobile, motion state of automobile information when optical signal generator is for by braking automobile is converted jump frequency signal and is sent out by brake lamp, optical signal receiver is used to receive the motion state of automobile information of front truck sending, distance measuring sensor is for measuring and the relative spacing of front vehicle, pilot controller carries out brake intervention to the manipulation state of automobile according to the vehicle condition information and relative spacing of front truck.The present invention is actively effectively prevented from the generation of rear-end collision；The comfort level of rear car rider is promoted using flexible brake technique.
Description
Technical field
The present invention relates to communication remote sensing and automobile intelligent to be based on light with the technical field combined safely, more particularly to one kind
The anti-auto-safety mechanism and its control method to knock into the back and flexibility is braked of communication.
Background technique
As the living standard of modern is continuously improved, automobile also increasingly becomes a kind of traffic common in numerous families
Tool.The car ownership in one city had been continuously increased in recent years, and urban road becomes more crowded, and road conditions also become more
Complexity, therefore the probability that traffic accident occurs also is improved indirectly.Once traffic accident occurs, it, will especially in business district
The traffic efficiency of road can be seriously affected.And in these traffic accidents, rear-ended car accident is most common most frequent accident
One of type.Therefore, if rear-end collision can be efficiently reduced, the generation number of urban traffic accident will be greatly reduced
Amount makes major contribution for passing unimpeded for city.
Following several sets of plan are mainly used in the prior art:
1) movement state information of front and back vehicle is obtained by binocular camera, during this method is implemented, two cameras can be with
One fixed spacing is installed in parallel on automobile, by taking the difference of image come the distance for the objects in images that converts.However, the party
The shortcomings that case is also clearly: a. can not be suitable for night and rain and fog weather；B. the two automobiles slightly remote for spacing, this method
The accuracy of ranging is not high；C. computing cost is big, and camera frame per second requires height, and hardware cost is high；D. in order to guarantee real-time,
It needs camera and calculates equipment to be always on work, influence service life.
2) acquisition of front truck movement state information and spacing is realized by ultrasonic distance measurement.However ultrasonic wave face it is maximum
Problem is co-channel interference, and measurement spacing is short.
3) acquisition of the relative velocity and spacing between the vehicle of front and back is realized by radar wave ranging.In contrast, this is mesh
It is preceding using a kind of relatively broad mode, but higher cost.
Summary of the invention
The purpose of the present invention is to provide a kind of based on optical communication it is anti-knock into the back and the auto-safety mechanism of flexible brake and
Its control method.
The technical solution adopted by the present invention is that:
A kind of anti-based on optical communication is knocked into the back and the auto-safety mechanism of flexible brake comprising pilot controller and with
The brake lamp with optical signal generator, optical signal receiver and the distance measuring sensor of pilot controller connection, have optical signal
The brake lamp of generator is set to automobile tail and uses as brake lamp, and optical signal receiver and distance measuring sensor are respectively arranged on automobile
Headstock front end, optical signal generator for by braking automobile when motion state of automobile information be converted in red lightwave spectrum
A segment hopping frequency signal and sent out by the light emitting diode in brake lamp, optical signal receiver is for receiving front truck
The motion state of automobile information of sending, distance measuring sensor is for measuring and the relative spacing of front vehicle, pilot controller root
Brake intervention is carried out to the manipulation state of automobile according to the vehicle condition information and relative spacing of front truck.
Further, velocity and acceleration information when motion state of automobile information includes braking automobile.
Further, the brake lamp with optical signal generator includes optical signal generator, light emitting diode and translucent cover,
Motion state of automobile information is obtained by the input terminal of optical signal generator, the output end output of optical signal generator is modulated
Optical signal source to light emitting diode, translucent cover is set to the exit end of luminous tube diode.
Further, translucent cover includes half ball cover being arranged along exit direction, and half ball cover corresponds to outside at outgoing center
It is extended with hollow cylinder, the bottom of hollow cylinder is bonded with half ball cover, and the bottom of hollow cylinder is by the inclined of vertical direction
Tabula rasa is constituted, and half ball cover is made of the polarizer of horizontal direction.
Further, half ball cover and hollow cylinder are formed by translucent material.
Further, optical signal receiver includes signal processor, U-shaped shielding case, Sensor of Optical Information, U-shaped shielding case
Opening towards vehicle front, U-shaped shielding case inside bottom is arranged in Sensor of Optical Information, and Sensor of Optical Information corresponds to entering light face
Upper and lower ends are respectively equipped with an entering light plate, and two entering light plates are set in distance, the light-inletting quantity that two entering light plate light inlets are set.
Further, each entering light plate includes a fixed plate and a deflecting plates, and one end of fixed plate is fixedly installed in light
One end of information sensor, deflecting plates are rotatablely connected by the other end of a shaft and fixed plate.
Further, distance measuring sensor includes laser range sensor, radar range finding sensor, ultrasonic distance-measuring sensor
And infrared distance measuring sensor.
A kind of anti-control method to knock into the back with the auto-safety mechanism of flexible brake based on optical communication comprising step:
Step 1, when front truck brakes, front truck obtains its motion state of automobile information and is converted to by optical signal generator
A segment hopping frequency signal in red lightwave spectrum, the light emitting diode in brake lamp are based on the jump frequency signal and change lamp
Optical flare frequency；
Step 2, rear car receives the high-frequency information in front truck receipts brake lamp light wave by optical signal receiver, while starting survey
Relative spacing away from sensor detection front car and rear car；
Step 3, rear car carries out processing to high-frequency information and obtains the motion state of automobile information of front truck, while obtaining rear car certainly
The motion state of automobile information of body；
Step 4, motion state of automobile information based on front and back vehicle calculate two workshops E seconds minimal reaction time after phase
To interval S (E)；
Step 5, when relative spacing S (E) is SP no more than flexible brake starting spacing, start flexible brake, auxiliary control
The acceleration of device notice automobile processed is exported with smoothed curve；Otherwise, flexible brake is not started.
The invention adopts the above technical scheme, when front truck brake lamp lights, by the light of brake lamp in a band frequency
It is converted in section and issues brake information, for rear car in optical information receiver after receiving the brake information of front truck, quick start is fixed
To laser ranging, the spacing of measurement and front truck.The information processing system of rear car vehicle brake information, spacing and this garage before analysis
After sailing information, the movement of corresponding traffic safety is made, such as slows down, remain a constant speed, emergency braking etc..The present invention passes through optical information
Technology, more effectively promotes the realization of car networking, and rear car can timely and effectively get the speed and acceleration when front truck brake
It spends information and is actively effectively prevented from the generation of rear-end collision in conjunction with itself speed and acceleration；Using flexible brake technique, remove
Outside the short distance braking events promptly to happen suddenly, it can guarantee that rear car rider is as few as possible by emergency braking, promote rear car
The comfort level of rider.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of anti-structural representation knocked into the back with the auto-safety mechanism of flexible brake based on optical communication of the present invention
Figure；
Fig. 2 is that a kind of anti-knock into the back based on optical communication of the present invention is sent out with the band optical signal of the auto-safety mechanism of flexible brake
The schematic illustration of the brake lamp of raw device；
Fig. 3 is a kind of anti-translucent cover backlight to knock into the back with the auto-safety mechanism of flexible brake based on optical communication of the present invention
Direction structure schematic diagram；
Fig. 4 is that a kind of anti-knock into the back based on optical communication of the present invention receives with the optical signal of the auto-safety mechanism of flexible brake
Device structural schematic diagram；
Fig. 5 is that a kind of anti-knock into the back based on optical communication of the present invention receives with the optical signal of the auto-safety mechanism of flexible brake
One of status diagram of device；
Fig. 6 is that a kind of anti-knock into the back based on optical communication of the present invention receives with the optical signal of the auto-safety mechanism of flexible brake
The two of the status diagram of device；
Fig. 7 is that a kind of anti-knock into the back based on optical communication of the present invention receives with the optical signal of the auto-safety mechanism of flexible brake
The three of the status diagram of device；
Fig. 8 is a kind of anti-control method to knock into the back with the auto-safety mechanism of flexible brake based on optical communication of the present invention
Two car state schematic diagrames；
Fig. 9 is a kind of anti-control method to knock into the back with the auto-safety mechanism of flexible brake based on optical communication of the present invention
Flexibility brake brief acceleration changes with time figure.
Specific embodiment
As shown in one of Fig. 1-7, the anti-automobile peace to knock into the back and flexibility is braked based on optical communication that the invention discloses a kind of
Full device comprising pilot controller 1 and the brake lamp 2 with optical signal generator being connect with pilot controller 1, light letter
Number receiver 3 and distance measuring sensor 4, as shown in Figure 1, the right side of vehicle is Chinese herbaceous peony cabin in opposite figure, left side is vehicle rear deck, is had
The brake lamp 2 of optical signal generator is set to automobile tail and uses as brake lamp, and optical signal receiver 3 and distance measuring sensor 4 divide
Not She Yu automobile headstock front end, optical signal generator 21 for by braking automobile when motion state of automobile information be converted to it is red
A segment hopping frequency signal in color lightwave spectrum is simultaneously sent out by the light emitting diode 22 in brake lamp, and optical signal receives
Device 3 be used for receive front truck sending motion state of automobile information, distance measuring sensor 4 be used for measure and front vehicle with respect between
Away from pilot controller 1 carries out brake intervention to the manipulation state of automobile according to the vehicle condition information and relative spacing of front truck.It is auxiliary
Help controller 1 for collecting the information of three aspects, the speed, acceleration letter including the front truck 1) got from optical information receiver
Breath；2) spacing between two vehicles got from contactless rangefinder；3) the velocity and acceleration information of this vehicle itself.Auxiliary
After controller 1 is collected into these information, analysis processing, and start flexible brake instruction when necessary, or even very tight
Start emergency braking brake in the case where compeling.The preferential safety for ensureing rider, and fully consider rider's on this basis
Comfort level.
Further, velocity and acceleration information when motion state of automobile information includes braking automobile.
Further, as shown in Fig. 2, the brake lamp 2 with optical signal generator includes optical signal generator 21, luminous two
Pole pipe 22 and translucent cover 23 obtain motion state of automobile information, optical signal generator by the input terminal of optical signal generator 21
21 output end exports modulated optical signal source to light emitting diode 22, and translucent cover 23 is set to the outgoing of luminous tube diode
End.
Specifically, the available radio spectrum of radio wave is compared, the width of optical spectrum can reach the 10000 of radio-wave spectrum
Times, frequency spectrum resource is very wide, and only the frequency range of feux rouges is just 4.3 × 1014Hz~4.8 × 1014Have 0.5 between Hz fully ×
1014The width of Hz, therefore even if the optical signal between vehicle can also be accomplished not interfere with each other on many and diverse road of vehicle.Light
Signal generator 21 is responsible for being converted to the digital signal of motion state of automobile into the letter of the segment hopping frequency in red lightwave spectrum
Number, and sent out by the light emitting diode 22 in brake lamp.
Further, as shown in figure 3, translucent cover 23 includes half ball cover 24 being arranged along exit direction, half ball cover 24 is right
It should be emitted at center and be outward extended with hollow cylinder 25, the bottom of hollow cylinder 25 is bonded with half ball cover 24, hollow cylinder
The bottom of body 25 is made of the polarizer of vertical direction, and half ball cover 24 is made of the polarizer of horizontal direction.
Further, half ball cover 24 and hollow cylinder 25 are formed by translucent material.
Further, as shown in figure 4, optical signal receiver 3 includes signal processor 31, U-shaped shielding case 32, optical information biography
Sensor 33, for the opening of U-shaped shielding case 32 towards vehicle front, U-shaped 32 inside bottom of shielding case, light is arranged in Sensor of Optical Information 33
The upper and lower ends in the corresponding entering light face of information sensor 33 are respectively equipped with an entering light plate 5, and two entering light plates 5 are set in distance, and two
The light-inletting quantity that 5 light inlet of entering light plate is set.The light that 3 structure of optical signal receiver issues the brake lamp of front truck to
The transmitting of wide-angle below makes the vehicle and pedestrian of both sides of the road that can see the brake signal of the vehicle, and only there was only the vehicle
The optical signal receiver 3 of the automobile in dead astern can receive the brake signal light issued from vertical polarizing plate just.
Therefore, rear car does not have to concern the interference that the brake signal light that the other vehicles in lane two sides issue generates.
Further, the light inlet side sample of the corresponding entering light plate 5 of optical signal receiver 3 is equipped with vertical light optical filter (figure
In do not indicate), only vertical light could effectively by filtering enter optical inductor.
Further, each entering light plate 5 includes a fixed plate 51 and a deflecting plates 52, the fixed peace in one end of fixed plate 51
One end loaded on Sensor of Optical Information 33, deflecting plates 52 are rotatablely connected by the other end of a shaft 53 and fixed plate 51.
Specifically, entering light plate 5 is used to control reception angular region and the direction of entering light, 5 shaft 53 of entering light plate for control into
The rotation of 5 outer panel of tabula rasa, Sensor of Optical Information 33 are used to receive the high-frequency information in brake lamp light wave, and shielding case is for shielding
Other light and electromagnetic wave signal interference, transmission line are used for transmission the data of Sensor of Optical Information 33, and signal processing system is used for
The data processing and analysis of next link.
The deflection that 5 outer panel of entering light plate is controlled by 5 shaft 53 of entering light plate, can efficiently control Sensor of Optical Information 33
Light-receiving angular range and direction.It is respectively the different deflection states of entering light plate 5 as shown in one of Fig. 4-7.Pass through as shown in Figure 5
The homodromic deflection of 5 outer panel of entering light plate, realizes the reception of lateral optical information.As shown in fig. 6,5 outer panel of entering light plate deflects inward,
Realize the light-receiving of small angle range.5 outer panel of entering light plate as shown in Figure 7 is deflected outward, and realizes the light-receiving of polarizers of big angle scope.
Further, distance measuring sensor 4 includes laser range sensor, radar range finding sensor, ultrasonic distance measurement sensing
Device and infrared distance measuring sensor, wherein being preferred in a manner of microwave radar and ultrasonic distance measurement.
As in figs. 8 or 9, the invention also discloses a kind of based on optical communication anti-knocks into the back and the automotive safety of flexible brake
The control method of device comprising step:
Step 1, when front truck brakes, front truck obtains its motion state of automobile information and is converted by optical signal generator 21
For the segment hopping frequency signal in red lightwave spectrum, the light emitting diode 22 in brake lamp is based on the jump frequency signal and changes
Become light flash frequency；
Specifically, when front vehicles step on brake pedal, current speed, acceleration information will do it acquisition,
Processing, conversion, and issued by the brake lamp 2 with optical signal generator.
Step 2, rear car receives the high-frequency information in front truck receipts brake lamp light wave by optical signal receiver 3, starts simultaneously
The relative spacing of the detection front car and rear car of distance measuring sensor 4；
Specifically, after the optical signal receiver 3 of front vehicle receives the brake signal of front truck, can immediately starting rangefinder into
Row ranging.In this way, rear car can obtain the pitch information between the speed, acceleration of front truck and two vehicles.In conjunction with the current of itself
Speed and acceleration just can ideally implement the active safety guarantee strategies that knock into the back very much, i.e., flexible brake technique.
Step 3, rear car carries out processing to high-frequency information and obtains the motion state of automobile information of front truck, while obtaining rear car certainly
The motion state of automobile information of body；
Step 4, motion state of automobile information based on front and back vehicle calculate two workshops E seconds minimal reaction time after phase
To interval S (E)；
Step 5, when relative spacing S (E) is SP no more than flexible brake starting spacing, start flexible brake, auxiliary control
Device 1 processed notifies the acceleration of automobile to export with smoothed curve；Otherwise, flexible brake is not started.
Specifically, the driving states in a certain roadnet and its lane are as shown in figure 8, its direction of traffic is from left-hand
The right side, the headlight of each vehicle of D1 in figure, D2 are the brake lamp with optical signal transmitter.Wherein, rear automobile is current
State is (v1, a1), i.e., travel speed is v1, acceleration a1, similar, the current state of front automobile is (v2, a2).Two
Spacing between vehicle is S.In view of time factor t, (v can be respectively labeled as to above-mentioned state variable1(t), a1(t)),(v2
(t), a2, and S (t) (t)).
The minimal reaction time that the minimum spacing allowed between fore-aft vehicle is set as Θ, and is allowed is Ξ seconds.And it sets
Fixed flexible brake starting spacing is SP.T moment, rear car are v with respect to the speed of front truck1(t)-v2(t), acceleration a1(t)-a2
(t), the relative distance between two vehicles after E seconds is S (E).
In flexible brake technique, when guaranteeing relative motion state is 0, the minimum spacing Θ of two vehicles, and allow most
The small reaction time is to implement smooth continuous brake scheme under the premise of E seconds.Flexibility brake strategy are as follows: as S (E) > SPWhen, no
The flexible brake of starting, the driving condition of vehicle can be manipulated arbitrarily at this time；As S (E)≤SPWhen, start flexible brake.I.e. when two vehicles
Between spacing it is enough, and when must carry out certain slowing-down brake, then using flexible brake technique.Flexible brake technique
Under, acceleration when braking automobile changes with time as shown in Figure 9.It can make rider will not be because of speed sharply in this way
Decline and forward lean, farthest guarantees the comfortable experience of rider.
The invention adopts the above technical scheme, when front truck brake lamp lights, by the light of brake lamp in a band frequency
It is converted in section and issues brake information, for rear car in optical information receiver after receiving the brake information of front truck, quick start is fixed
To laser ranging, the spacing of measurement and front truck.The information processing system of rear car vehicle brake information, spacing and this garage before analysis
After sailing information, the movement of corresponding traffic safety is made, such as slows down, remain a constant speed, emergency braking etc..
Claims (9)
1. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication, it is characterised in that: it includes auxiliary control
Device processed and the brake lamp with optical signal generator, optical signal receiver and the distance measuring sensor being connect with pilot controller,
Brake lamp with optical signal generator is set to automobile tail and uses as brake lamp, optical signal receiver and distance measuring sensor point
Not She Yu automobile headstock front end, optical signal generator for by braking automobile when motion state of automobile information be converted to red
A segment hopping frequency signal in lightwave spectrum is simultaneously sent out by the light emitting diode in brake lamp, and optical signal receiver is used
In the motion state of automobile information for receiving front truck sending, distance measuring sensor is used to measure and the relative spacing of front vehicle, auxiliary
Controller is helped to carry out brake intervention to the manipulation state of automobile according to the vehicle condition information and relative spacing of front truck.
2. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 1, special
Sign is: velocity and acceleration information when motion state of automobile information includes braking automobile.
3. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 1, special
Sign is: the brake lamp with optical signal generator includes optical signal generator, light emitting diode and translucent cover, passes through optical signal
The input terminal of generator obtains motion state of automobile information, and the output end of optical signal generator exports modulated optical signal source extremely
Light emitting diode, translucent cover are set to the exit end of luminous tube diode.
4. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 3, special
Sign is: translucent cover include along exit direction be arranged half ball cover, half ball cover correspond to be outward extended at outgoing center it is hollow
Cylindrical body, the bottom of hollow cylinder are bonded with half ball cover, and the bottom of hollow cylinder is made of the polarizer of vertical direction, and half
Ball cover is made of the polarizer of horizontal direction.
5. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 4, special
Sign is: half ball cover and hollow cylinder are formed by translucent material.
6. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 1, special
Sign is: optical signal receiver includes signal processor, U-shaped shielding case, Sensor of Optical Information, the opening direction of U-shaped shielding case
U-shaped shielding case inside bottom is arranged in vehicle front, Sensor of Optical Information, and Sensor of Optical Information corresponds to the upper and lower ends point in entering light face
Not She You an entering light plate, two entering light plates are set in distance, the light-inletting quantity that two entering light plate light inlets are set.
7. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 6, special
Sign is: each entering light plate includes a fixed plate and a deflecting plates, and one end of fixed plate is fixedly installed in Sensor of Optical Information
One end, deflecting plates is rotatablely connected by the other end of a shaft and fixed plate.
8. a kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication according to claim 1, special
Sign is: distance measuring sensor includes that laser range sensor, radar range finding sensor, ultrasonic distance-measuring sensor and infrared ray are surveyed
Away from sensor.
9. a kind of anti-control method to knock into the back with the auto-safety mechanism of flexible brake based on optical communication, uses claim
A kind of anti-auto-safety mechanism to knock into the back and flexibility is braked based on optical communication described in one of 1-8, it is characterised in that: controlling party
Method the following steps are included:
Step 1, when front truck brakes, front truck obtains its motion state of automobile information and is converted to red by optical signal generator
A segment hopping frequency signal in lightwave spectrum, the light emitting diode in brake lamp are based on the jump frequency signal and change light dodging
Bright frequency；
Step 2, rear car receives the high-frequency information in front truck receipts brake lamp light wave by optical signal receiver, while starting ranging biography
The relative spacing of sensor detection front car and rear car；
Step 3, rear car carries out processing to high-frequency information and obtains the motion state of automobile information of front truck, while obtaining rear car itself
Motion state of automobile information；
Step 4, motion state of automobile information based on front and back vehicle calculate two workshops E second minimal reaction time after with respect between
Away from S (E)；
Step 5, when relative spacing S (E) is no more than flexible brake starting spacingWhen, start flexible brake, pilot controller
The acceleration of notice automobile is exported with smoothed curve；Otherwise, flexible brake is not started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123432.6A CN109050526B (en) | 2018-09-26 | 2018-09-26 | Automobile safety device for preventing rear-end collision and flexibly braking based on optical communication and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123432.6A CN109050526B (en) | 2018-09-26 | 2018-09-26 | Automobile safety device for preventing rear-end collision and flexibly braking based on optical communication and control method thereof |
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| CN109050526A true CN109050526A (en) | 2018-12-21 |
| CN109050526B CN109050526B (en) | 2020-04-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109966088A (en) * | 2019-04-11 | 2019-07-05 | 深圳市人民医院 | A kind of Clinical Alert system |
| CN110497846A (en) * | 2019-09-10 | 2019-11-26 | 福建省汽车工业集团云度新能源汽车股份有限公司 | Vehicle signal lamp system, automotive control system and intelligent automobile |
| CN111169475A (en) * | 2020-01-15 | 2020-05-19 | 北京汽车集团有限公司 | Vehicle collision early warning device and method and vehicle |
| CN111591209A (en) * | 2020-06-01 | 2020-08-28 | 西安电子科技大学芜湖研究院 | Automobile lamp communication braking system |
| CN113781798A (en) * | 2021-11-11 | 2021-12-10 | 四川九通智路科技有限公司 | Polarized light-based vehicle management and control method and system |
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| CN113781798A (en) * | 2021-11-11 | 2021-12-10 | 四川九通智路科技有限公司 | Polarized light-based vehicle management and control method and system |
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