CN105807290A - Retro-reflection body based laser detection collision warning method - Google Patents
Retro-reflection body based laser detection collision warning method Download PDFInfo
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- CN105807290A CN105807290A CN201610380057.8A CN201610380057A CN105807290A CN 105807290 A CN105807290 A CN 105807290A CN 201610380057 A CN201610380057 A CN 201610380057A CN 105807290 A CN105807290 A CN 105807290A
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- retro reflectors
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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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides a retro-reflection body based laser detection collision warning method.The retro-reflection body based laser detection collision warning method includes the steps of acquiring minimum and maximum power values of laser echo signals reflected by retro-reflection bodies under a natural condition; acquiring gain parameters and a dynamic range required by signal amplification; designing a signal amplification module for receiving the laser echo signals according to the gain parameters and the dynamic range, and using the signal amplification module for processing the laser echo signals reflected into a laser detector by the retro-reflection bodies within a view field so as to obtain distance, speed and azimuth information of the retro-reflection bodies in the view field and complete collision warning for road boundaries, barriers, vehicles and people.The a retro-reflection body based laser detection collision warning method has the advantage that requirements on detector sensitivity, amplification circuit design and signal processing are lowered under the condition that an acting distance is kept unchanged, so that acting distance is extended substantially.
Description
Technical field
The present invention relates to driving safety technical field, particularly a kind of retro reflectors laser acquisition anti-collision warning method.
Background technology
Collision warning systems are the important component parts that unmanned and advanced auxiliary is driven.Wherein, laser acquisition anti-collision warning technology, compared with visually-perceptible anti-collision warning technology, has prominent advantage in precision and stability.But, due to shortcomings such as price are higher, operating distance is short, seriously limit the extensive use of laser acquisition anti-collision warning technology.
Traffic mark, car plate, road administration dress ornament are the distinctive markss of road boundary, barrier, vehicle, road administration staff, it is possible to as the target of anti-collision warning.It is true that traffic mark, car plate, road administration dress ornament all have employed reflecting material, it is typical retro reflectors, provides advantage for laser far-distance detection.Retro-reflective properties can be expressed as: reflection light is propagated along the direction of light source, and is maintained in a less solid angle.In theory, retro reflectors reflectance in special angle is up to several thousand to several ten thousand times of common objects.If with retro reflectors for target, laser acquisition collision warning systems to detector sensitivity, Design of Amplification Circuit, signal processing requirement will be greatly reduced, thus reduce simultaneously cost and improve operating distance purpose.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of retro reflectors laser acquisition anti-collision warning method, it comprises the following steps:
In the distance sphere of action of laser acquisition anti-collision warning, under acquisition natural conditions, it is reflected into minimum power and the maximum power value of the laser echo signal of laser detector through various retro reflectors；
Utilize minimum power and the maximum power value of described laser echo signal, in conjunction with detector sensitivity, opto-electronic conversion parameter, obtain signal and amplify required gain parameter and dynamic range；
Described signal is utilized to amplify required gain parameter and the signal amplification module of dynamic range design return laser beam reception, process retro reflectors in field range by described signal amplification module and be reflected into the laser echo signal of laser detector, it is thus achieved that the distance of retro reflectors, speed, azimuth information in visual field；
By the distance of described retro reflectors, speed, azimuth information, complete to road boundary, barrier, vehicle, personnel anti-collision warning.
It is preferred that described retro reflectors include adopt reflecting material make traffic mark, car plate, dress ornament.
The method have the advantages that
Retro reflectors laser acquisition anti-collision warning method provided by the invention both can reduce when operating distance is constant to detector sensitivity, Design of Amplification Circuit, signal processing requirement, thus realizing low complex degree and low cost；When collision warning systems the Nomenclature Composition and Structure of Complexes is basically unchanged, operating distance can also be greatly improved；The indexs such as complexity, cost, performance can also be considered simultaneously and carry out module selection and design.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, technical scheme is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiments providing a kind of retro reflectors laser acquisition anti-collision warning method, it comprises the following steps:
In the distance sphere of action of laser acquisition anti-collision warning, under acquisition natural conditions, it is reflected into minimum power and the maximum power value of the laser echo signal of laser detector through various retro reflectors；Wherein minimum power is after opto-electronic conversion Parameter Modulation, it is necessary to the amplification carrying out certain multiple can be only achieved detector sensitivity, and this amplification is required gain parameter；In like manner, utilizing peak power to obtain another gain parameter, the interval of two gain parameter compositions is exactly required dynamic range；
Utilize minimum power and the maximum power value of described laser echo signal, in conjunction with detector sensitivity, opto-electronic conversion parameter, obtain signal and amplify required gain parameter and dynamic range；
Described signal is utilized to amplify required gain parameter and the signal amplification module of dynamic range design return laser beam reception, process retro reflectors in field range by described signal amplification module and be reflected into the laser echo signal of laser detector, it is thus achieved that the distance of retro reflectors, speed, azimuth information in visual field；
By the distance of described retro reflectors, speed, azimuth information, complete to road boundary, barrier, vehicle, personnel anti-collision warning.
Traffic mark that the described retro reflectors that the embodiment of the present invention provides includes adopting reflecting material to make, car plate, dress ornament etc..The article that concrete retro reflectors is not made by the present invention specifically limit, and the present invention only illustrates and illustrates.
Retro reflectors laser acquisition anti-collision warning method provided by the invention both can reduce when operating distance is constant to detector sensitivity, Design of Amplification Circuit, signal processing requirement, thus realizing low complex degree and low cost；When collision warning systems the Nomenclature Composition and Structure of Complexes is basically unchanged, operating distance can also be greatly improved；The indexs such as complexity, cost, performance can also be considered simultaneously and carry out module selection and design.
Present invention disclosed above preferred embodiment is only intended to help to set forth the present invention.Preferred embodiment does not have all of details of detailed descriptionthe, is not intended to the detailed description of the invention that this invention is only described yet.Obviously, the content according to this specification, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to explain principles of the invention and practical application better, so that skilled artisan can be best understood by and utilize the present invention.The present invention is limited only by the restriction of claims and four corner thereof and equivalent.
Claims (2)
1. a retro reflectors laser acquisition anti-collision warning method, it is characterised in that comprise the following steps:
In the distance sphere of action of laser acquisition anti-collision warning, under acquisition natural conditions, it is reflected into minimum power and the maximum power value of the laser echo signal of laser detector through various retro reflectors；
Utilize minimum power and the maximum power value of described laser echo signal, in conjunction with detector sensitivity, opto-electronic conversion parameter, obtain signal and amplify required gain parameter and dynamic range；
Described signal is utilized to amplify required gain parameter and the signal amplification module of dynamic range design return laser beam reception, process retro reflectors in field range by described signal amplification module and be reflected into the laser echo signal of laser detector, it is thus achieved that the distance of retro reflectors, speed, azimuth information in visual field；
By the distance of described retro reflectors, speed, azimuth information, complete to road boundary, barrier, vehicle, personnel anti-collision warning.
2. retro reflectors laser acquisition anti-collision warning method as claimed in claim 1, it is characterised in that traffic mark that described retro reflectors includes adopting reflecting material to make, car plate, dress ornament.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610380057.8A CN105807290A (en) | 2016-06-01 | 2016-06-01 | Retro-reflection body based laser detection collision warning method |
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| CN201610380057.8A CN105807290A (en) | 2016-06-01 | 2016-06-01 | Retro-reflection body based laser detection collision warning method |
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| CN201610380057.8A Pending CN105807290A (en) | 2016-06-01 | 2016-06-01 | Retro-reflection body based laser detection collision warning method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244319A (en) * | 2019-05-31 | 2019-09-17 | 中国人民解放军国防科技大学 | Imaging method for detecting reverse reflector |
| CN110261928A (en) * | 2019-05-07 | 2019-09-20 | 中国人民解放军国防科技大学 | Non-uniform light retroreflection detection method |
| CN111684305A (en) * | 2019-01-10 | 2020-09-18 | 深圳市大疆创新科技有限公司 | Ranging system and mobile platform |
| US11417111B2 (en) | 2017-12-22 | 2022-08-16 | Terra Scientia, Llc | Method, system and material for detecting objects of high interest with laser scanning systems |
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| CN2045376U (en) * | 1988-12-07 | 1989-10-04 | 空军第七研究所 | Laser bump preventing device |
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| CN2045376U (en) * | 1988-12-07 | 1989-10-04 | 空军第七研究所 | Laser bump preventing device |
Non-Patent Citations (4)
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| 张素青: ""干线公路低造价交通安全设施与效果评估方法研究"", 《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技II辑》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11417111B2 (en) | 2017-12-22 | 2022-08-16 | Terra Scientia, Llc | Method, system and material for detecting objects of high interest with laser scanning systems |
| CN111684305A (en) * | 2019-01-10 | 2020-09-18 | 深圳市大疆创新科技有限公司 | Ranging system and mobile platform |
| CN110261928A (en) * | 2019-05-07 | 2019-09-20 | 中国人民解放军国防科技大学 | Non-uniform light retroreflection detection method |
| CN110261928B (en) * | 2019-05-07 | 2020-11-06 | 中国人民解放军国防科技大学 | Non-uniform light retroreflection detection method |
| CN110244319A (en) * | 2019-05-31 | 2019-09-17 | 中国人民解放军国防科技大学 | Imaging method for detecting reverse reflector |
| CN110244319B (en) * | 2019-05-31 | 2021-04-09 | 中国人民解放军国防科技大学 | Imaging method for detecting reverse reflector |
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Effective date of registration: 20180316 Address after: 314000 Building 5, Gaoqiao Avenue, Tongxiang City, Jiaxing, Zhejiang Applicant after: Jiaxing one Yang Photoelectric Technology Co., Ltd. Address before: No. 1156, Gaoqiao Avenue, 5, Zhejiang, Jiaxing, Zhejiang Applicant before: Yang Xing Applicant before: Lv Donglei |
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