CN105572675B - A kind of vehicle anti-collision early warning method - Google Patents
A kind of vehicle anti-collision early warning method Download PDFInfo
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- CN105572675B CN105572675B CN201610125283.1A CN201610125283A CN105572675B CN 105572675 B CN105572675 B CN 105572675B CN 201610125283 A CN201610125283 A CN 201610125283A CN 105572675 B CN105572675 B CN 105572675B
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- radar sensor
- radar
- barrier
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- alarm
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Classifications
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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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- 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
-
- 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Traffic Control Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A kind of vehicle anti-collision early warning method, realized using anti-collision prewarning apparatus for vehicle, control the first to the 5th radar sensor of control to respectively obtain radar sensor to the distance of barrier by central processing unit, calculating is modeled by trigonometric function, obtains the tailstock to the vertical range of barrier, when vertical range is more than or equal to threshold value, alarm is then sent, large-range monitoring, alarm accuracy height can be realized, cost is low, and effectively eliminates measurement error.
Description
Technical field
The present invention relates to field of automobile safety, and in particular to a kind of vehicle anti-collision early warning method.
Background technology
Public transport is the public's very concern safely, and driving safety is a weight for motor vehicle operators
The problem of big.In many traffic accidents, collision is recurrent accident form, and the ratio that the collision of side, rear accounts for is very
It is high.The collision of side, rear generally occurs in intersection, deflecting, overtaken other vehicles, under the environment such as move backward, and the infringement for vehicle is also very
Greatly, maintenance cost is higher.How effectively, driver is accurately reminded, so as to which preventing vehicle collision is asked into very popular
Topic.
At present, the mode of existing vehicle anticollision is mainly to install bumper additional in the front and back of automobile, installs substitute
The mode of capsule and safety belt protects driver and passenger, in addition also by setting radar on the vehicle body around automobile, from
And driver is reminded close to barrier or the object that may be collided in automobile, prevention collides.But set at present
The mode of radar reminds the mode accuracy rate of the early warning of driver's realization that the probability of false alarm is very high, is made to driver than relatively low
Into many inconvenience, radar of the prior art is often scanned for a certain angular range in addition, is not matched somebody with somebody therewith
The monitoring of conjunction, calibration, the radar system for confirming judgement.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can realize large-range monitoring, and alarm is just
True rate is high, and cost is low, and effectively eliminates the vehicle anti-collision early warning method of measurement error.
The invention provides a kind of vehicle anti-collision early warning method, is realized using anti-collision prewarning apparatus for vehicle, wherein automobile
Anti-collision prewarning apparatus includes the radar sensing device and alarm that be connecteds respectively with central processing unit, radar sensing device including according to
Secondary be located along the same line 5 radar sensors for being arranged on automobile tail, the first radar sensor and the 5th radar sensing
Device is located at the both ends of automobile tail respectively, and distance is L, and the 3rd radar sensor is located at respectively away from the first radar sensor and the 5th
At radar sensor L/2, the second radar sensor is located to be located away from the first radar sensor a, and the 4th radar sensor is positioned at away from the
At five radar sensor b, wherein a and b are both less than L/2, and a+b=L/2；
Comprise the following steps successively：
(1) control the 3rd radar sensor to launch radar signal R3 progress barriers with angle [alpha] by central processing unit to sweep
Retouch, wherein α is transmitting radar signal R3 directions and the angle of the straight line；
(2) the echo-signal E3 returned from barrier is received, obtains the distance A of the 3rd radar sensor and barrier, is led to
Cross formula d1=A sin α and barrier is calculated to the vertical range d1 of the tailstock；
(3) control first and second radar sensor respectively by central processing unit while launch radar signal R1, R2 and swept
Retouch, wherein transmitting radar signal R1, R2 converges at same point, and it is d1 and parallel parallel that the point, which is located at apart from the straight line,
On line；
(4) the echo-signal E1 and E2 returned from barrier is received respectively, respectively obtains first and second radar sensor and barrier
Hinder the distance B1 and B2 of thing, calculateWherein β is transmitting radar signal R1 directions and the straight line
Angle, β value is obtained by antitrigonometric function formula；
(5) the vertical range d2 of barrier and the tailstock is calculated by formula d2=B1sin β；
(6) control fourth, fifth radar sensor respectively by central processing unit while launch radar signal R4, R5 and swept
Retouch, wherein transmitting radar signal R4, R5 converges at same point, and it is d2 and parallel parallel that the point, which is located at apart from the straight line,
On line；
(7) the echo-signal E4 and E5 returned from barrier is received respectively, respectively obtains fourth, fifth radar sensor and barrier
Hinder the distance C2 and C1 of thing, calculateWherein θ is transmitting radar signal R4 directions and the straight line
Angle, θ values are obtained by antitrigonometric function formula；
(8) the vertical range d3 of barrier and the tailstock is calculated by formula d3=C2sin θ；
(9) according to weight calculationIf d is less than threshold value, repeat step (1)-(8),
If greater than equal to threshold value, then alarm is controlled to send alarm by central processing unit.
Preferably, radar sensor is ultrasonic radar sensor and/or laser radar sensor.
Preferably, alarm is Wire alarming device and/or wireless alarm.
The vehicle anti-collision early warning method of the present invention, it is possible to achieve：
1) it can realize that large area scanning monitors, early warning range is big, the setting sensor and its location parameter of optimization, effectively
Various interference when eliminating measurement caused by error, accuracy rate improves.
2) combination Jing Guo a variety of calculations, obtained data are relatively reliable, and alarm accuracy is high, and cost is low.
Brief description of the drawings
Fig. 1 anti-collision prewarning apparatus for vehicle structural representations
Fig. 2 radar sensing device setting structure schematic diagrames
Fig. 3 radars sensing device sets operation principle schematic diagram
Embodiment
The following detailed description of the specific implementation of the present invention, it is necessary to it is pointed out here that, implement to be only intended to this hair below
Bright further explanation, it is impossible to be interpreted as limiting the scope of the invention, art skilled person is according to above-mentioned
Some nonessential modifications and adaptations that the content of the invention is made to the present invention, still fall within protection scope of the present invention.
The invention provides a kind of vehicle anti-collision early warning method, as shown in Figure 1, using anti-collision prewarning apparatus for vehicle come real
Existing, wherein anti-collision prewarning apparatus for vehicle includes the radar sensing device and alarm being connected respectively with central processing unit, such as accompanying drawing 2
Shown, radar sensing device includes be located along the same line 5 radar sensors 1 for being successively set on automobile tail, such as attached
Shown in Fig. 3, the first radar sensor and the 5th radar sensor are located at the both ends of automobile tail respectively, and distance is L, the 3rd radar
Sensor is at respectively away from the first radar sensor and the 5th radar sensor L/2；Second radar sensor is located at away from first
At radar sensor a, the 4th radar sensor is located at away from the 5th radar sensor b, and wherein a and b are both less than L/2, and a+b=
L/2.Specifically, vehicle anti-collision early warning method in turn includes the following steps：
(1) control the 3rd radar sensor to launch radar signal R3 progress barriers with angle [alpha] by central processing unit to sweep
Retouch, wherein α is transmitting radar signal R3 directions and the angle of the straight line；
(2) the echo-signal E3 returned from barrier is received, obtains the distance A of the 3rd radar sensor and barrier, is led to
Cross formula d1=A sin α and barrier is calculated to the vertical range d1 of the tailstock；
(3) control first and second radar sensor respectively by central processing unit while launch radar signal R1, R2 and swept
Retouch, wherein transmitting radar signal R1, R2 converges at same point, and it is d1 and parallel parallel that the point, which is located at apart from the straight line,
On line；
(4) the echo-signal E1 and E2 returned from barrier is received respectively, respectively obtains first and second radar sensor and barrier
Hinder the distance B1 and B2 of thing, calculateWherein β is transmitting radar signal R1 directions and the straight line
Angle, β value is obtained by antitrigonometric function formula；
(5) the vertical range d2 of barrier and the tailstock is calculated by formula d2=B1sin β；
(6) control fourth, fifth radar sensor respectively by central processing unit while launch radar signal R4, R5 and swept
Retouch, wherein transmitting radar signal R4, R5 converges at same point, and it is d2 and parallel parallel that the point, which is located at apart from the straight line,
On line；
(7) the echo-signal E4 and E5 returned from barrier is received respectively, respectively obtains fourth, fifth radar sensor and barrier
Hinder the distance C2 and C1 of thing, calculateWherein θ is transmitting radar signal R4 directions and the straight line
Angle, θ values are obtained by antitrigonometric function formula；
(8) the vertical range d3 of barrier and the tailstock is calculated by formula d3=C2sin θ；
(9) according to weight calculationIf d is less than threshold value, repeat step (1)-(8),
If greater than equal to threshold value, then alarm is controlled to send alarm by central processing unit.
It should be noted that the problem of value is positive and negative is being likely to occur during calculating, for those skilled in the art
For can be adjusted according to the positive and negative of the result of calculation of reality, take on the occasion of, negative value or on the occasion of combination with negative value, for
Being unsatisfactory for the extreme case of design conditions should reject.
Although for illustrative purposes, it has been described that illustrative embodiments of the invention, those skilled in the art
Member it will be understood that, can be in form and details in the case of the scope and spirit for not departing from invention disclosed in appended claims
The upper change for carrying out various modifications, addition and replacement etc., and all these changes should all belong to appended claims of the present invention
Protection domain, and each step in each department of claimed product and method, can be in any combination
Form is combined.Therefore, to disclosed in this invention embodiment description be not intended to limit the scope of the present invention,
But for describing the present invention.Correspondingly, the scope of the present invention is not limited by embodiment of above, but by claim or
Its equivalent is defined.
Claims (3)
1. a kind of vehicle anti-collision early warning method, realized using anti-collision prewarning apparatus for vehicle, wherein anti-collision prewarning apparatus for vehicle bag
The radar sensing device and alarm being connected respectively with central processing unit are included, radar sensing device includes being successively set on car tail
Be located along the same line 5 radar sensors in portion, the first radar sensor and the 5th radar sensor are located at automobile respectively
The both ends of afterbody, distance are L, and the 3rd radar sensor is located at respectively away from the first radar sensor and the 5th radar sensor L/2
Place, the second radar sensor are located at away from the first radar sensor a, and the 4th radar sensor is located at away from the 5th radar sensor b
Place, wherein a and b are both less than L/2, and a+b=L/2；
Characterized in that, comprise the following steps successively：
(1) control the 3rd radar sensor to launch radar signal R3 with angle [alpha] by central processing unit and carry out barrier scanning, its
Middle α is transmitting radar signal R3 directions and the angle of the straight line；
(2) the echo-signal E3 returned from barrier is received, the distance A of the 3rd radar sensor and barrier is obtained, passes through public affairs
Barrier is calculated to the vertical range d1 of the tailstock in formula d1=Asin α；
(3) control first and second radar sensor respectively by central processing unit while launch radar signal R1, R2 and be scanned,
Wherein transmitting radar signal R1, R2 converges at same point, and it is d1 and parallel to described straight that the point, which is located at apart from the straight line,
On the parallel lines of line；
(4) the echo-signal E1 and E2 returned from barrier is received respectively, respectively obtains first and second radar sensor and barrier
Distance B1 and B2, calculateWherein β is transmitting radar signal R1 directions and the folder of the straight line
Angle, β value is obtained by antitrigonometric function formula；
(5) the vertical range d2 of barrier and the tailstock is calculated by formula d2=B1sin β；
(6) control fourth, fifth radar sensor respectively by central processing unit while launch radar signal R4, R5 and be scanned,
Wherein transmitting radar signal R4, R5 converges at same point, and it is d2 and parallel to described straight that the point, which is located at apart from the straight line,
On the parallel lines of line；
(7) the echo-signal E4 and E5 returned from barrier is received respectively, respectively obtains fourth, fifth radar sensor and barrier
Distance C2 and C1, calculateWherein θ is transmitting radar signal R4 directions and the folder of the straight line
Angle, θ values are obtained by antitrigonometric function formula；
(8) the vertical range d3 of barrier and the tailstock is calculated by formula d3=C2sin θ；
(9) according to weight calculationIf d is less than threshold value, repeat step (1)-(8), if
More than or equal to threshold value, then alarm is controlled to send alarm by central processing unit.
2. the method as described in claim 1, it is characterised in that：Radar sensor is ultrasonic radar sensor and/or laser
Radar sensor.
3. method as claimed in claim 1 or 2, it is characterised in that：Alarm is Wire alarming device and/or wireless alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610125283.1A CN105572675B (en) | 2016-03-04 | 2016-03-04 | A kind of vehicle anti-collision early warning method |
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| CN201610125283.1A CN105572675B (en) | 2016-03-04 | 2016-03-04 | A kind of vehicle anti-collision early warning method |
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| CN105572675A CN105572675A (en) | 2016-05-11 |
| CN105572675B true CN105572675B (en) | 2017-12-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671978A (en) * | 2016-12-30 | 2017-05-17 | 西安交通大学青岛研究院 | Automobile anti-collision path correcting method |
| CN109581391A (en) * | 2018-12-28 | 2019-04-05 | 广州小鹏汽车科技有限公司 | A kind of the determination method and parking stall position determining means of parking position |
| CN113561947B (en) * | 2021-07-02 | 2022-09-20 | 北京中科慧眼科技有限公司 | Automatic braking method, device and system for passenger car |
| CN113500983B (en) * | 2021-07-02 | 2022-06-21 | 北京中科慧眼科技有限公司 | Automatic braking method, device and system for commercial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004062496A1 (en) * | 2004-12-24 | 2006-07-06 | Daimlerchrysler Ag | A method of operating a collision avoidance or collision sequence mitigation system of a vehicle and collision avoidance or collision mitigation system |
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2016
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| CN101052892A (en) * | 2004-10-29 | 2007-10-10 | 罗伯特·博世有限公司 | Sensor system for ascertaining target distance by triangular measuring with angle-resolved mode of automatic with fmcw radar sensor |
| CN101782645A (en) * | 2010-02-12 | 2010-07-21 | 深圳市元征软件开发有限公司 | Method and device for detecting backing distance |
| CN102156284A (en) * | 2011-03-24 | 2011-08-17 | 中国汽车技术研究中心 | Anti-collision early-warning device and method for passenger car |
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