CN103983983A - Vehicle-mounted ranging laser radar system - Google Patents
Vehicle-mounted ranging laser radar system Download PDFInfo
- Publication number
- CN103983983A CN103983983A CN201410235212.8A CN201410235212A CN103983983A CN 103983983 A CN103983983 A CN 103983983A CN 201410235212 A CN201410235212 A CN 201410235212A CN 103983983 A CN103983983 A CN 103983983A
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- radar system
- vehicle
- mux
- laser radar
- range laser
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- 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)
Abstract
The invention discloses a vehicle-mounted ranging laser radar system. The vehicle-mounted ranging laser radar system is characterized in that the radar system is divided into a transmitting part and a receiving part; a single-chip microcomputer of the transmitting part sends pulses to a transmitting circuit, the transmitting circuit sends high-power narrow pulses to an emitting diode, the emitting diode emits a laser, the laser is split into three beams of light waves after passing through a diffraction grating, and front areas in three orientations are covered with the three beams of light waves; when the light waves encounter a target object in one area, part of the reflected laser is transmitted to a PIN transistor set through a receiving lens of the receiving part and then transmitted to a multiplexer after passing through a signal processing circuit, a certain channel is opened up by the multiplexer every certain time and allows echo signals in a certain orientation to pass through, and the signals which have passed through the channel are further transmitted to a timing chip. Because the structure is adopted, an existing scanning mirror system is replaced with the multiplexer, and the cost of the system is substantially reduced; the whole system is small in size and convenient to install.
Description
Technical field
The present invention relates to trailer-mounted radar field, particularly a kind of vehicle-mounted range laser radar system.
Background technology
On automobile, the wider laser distance measuring system of application can be divided into nonimaging formula laser radar and imaging formula laser radar at present.Nonimaging formula laser radar is determined distance according to the laser beam travel-time.Its principle of work is: after the light beam that the laser pulse sending from high power narrow pulse laser is focused into definite shape through transmitting objective lens, with the scanning of scanning mirror left and right, to spatial emission, be radiated in front vehicles or other targets, its reflected light is through scanning mirror, receiving objective and feed back optical fiber, be directed to photodiode in signal processing apparatus, utilize the mistiming between the received pulse of rolling counters forward laser diode starting impulse and photodiode, can try to achieve target range.The angle of utilizing position sensor in mirror system to measure catoptron can be measured the orientation of target.But due to the high cost of mirror system, restricted the universal of vehicle-mounted range laser radar.
For the problems referred to above, a kind of novel vehicle-mounted range laser radar system is provided, at utmost reduce production costs.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of vehicle-mounted range laser radar system, to reach the object at utmost reducing production costs.
For achieving the above object, technical scheme of the present invention is that a kind of vehicle-mounted range laser radar system, is characterized in that: described radar system is divided into radiating portion and receiving unit; The single-chip microcomputer transmitted of radiating portion is to radiating circuit, and radiating circuit sends high power burst pulse to emitting diode, and emitting diode Emission Lasers, after diffraction grating, is divided into three beams light wave, covers the region in San Ge orientation, the place ahead; In region, run into after object, the laser that part is reflected back sends PIN pipe group to through the reception camera lens of receiving unit, pass through again signal processing circuit, give MUX, MUX is opened a certain passage at regular intervals, allow the echoed signal in a certain orientation wherein pass through, the signal passing through sends timing chip again to.
Described timing chip relatively pulse initial transmissions constantly t1 and the time of reception t2, the mistiming (t2-t1) of calculating both, then calculate distance s=(the t2-t1)/2*c of object, c is the light velocity.
It is whole system power supply that described radar system is provided with power module.
Described PIN pipe component is three groups, receiving camera lens receives after echo-pulse, be sent to respectively three groups of PIN pipes and be sent to MUX simultaneously after signal processing circuit is processed, MUX can be opened a wherein passage at set intervals, signal is sent to timing chip again, and timing chip is according to x time and calculate the distance of object the time of reception.
The echo that the LEFT of described MUX, MID, RIGHT tri-road signals receive from three groups of PIN pipes respectively, the passage output that STOP signal is MUX, is sent to timing chip.
The model of described MUX control chip is ADG659.
A vehicle-mounted range laser radar system, owing to adopting above-mentioned structure, the present invention utilizes MUX to replace existing mirror system, has significantly reduced system cost; Whole system volume is little, is convenient to install.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is the structured flowchart of a kind of vehicle-mounted range laser radar system of the present invention;
Fig. 2 is the schematic diagram of the three-beam that separates after diffraction grating of a kind of vehicle-mounted range laser radar system transponder pulse of the present invention;
Fig. 3 is the structured flowchart of a kind of vehicle-mounted range laser radar system multi-channel selector switch of the present invention;
Fig. 4 is the circuit diagram of a kind of vehicle-mounted range laser radar system multi-channel selector switch of the present invention;
In Fig. 1-3,1, power module; 2, single-chip microcomputer; 3, radiating circuit; 4, emitting diode; 5, diffraction grating; 6, receive camera lens; 7, PIN pipe group; 8, signal processing circuit; 9, MUX; 10, timing chip; 11, object.
Embodiment
As Figure 1-4, the present invention is for being divided into radiating portion and receiving unit, and radiating portion comprises: power module 1, single-chip microcomputer 2, radiating circuit 3, emitting diode 4, diffraction grating 5.Power module 1 is whole system power supply, and single-chip microcomputer 2 transmitteds are to radiating circuit 3, and radiating circuit 3 sends high power burst pulse to emitting diode 4, emitting diode 4 Emission Lasers, after diffraction grating 5, be divided into three beams light wave, cover the region in San Ge orientation, the place ahead.
Receiving unit comprises: receive camera lens 6, PIN pipe group 7, signal processing circuit 8, MUX 9, timing chip 10.In region, run into after object 11, the laser that part is reflected back sends PIN pipe group 7 to through receiving camera lens 6, pass through again signal processing circuit 8, give MUX 9, MUX 9 is opened a certain passage at regular intervals, allow the echoed signal in a certain orientation wherein pass through, the signal passing through sends timing chip 10 again to, timing chip 10 relatively pulses initial transmissions constantly t1 and the time of reception t2, calculate both mistimings (t2-t1), then distance s=(the t2-t1)/2*c that calculates object, c is the light velocity.
The PIN pipe group 7 of receiving unit is divided into three groups, receiving camera lens 6 receives after echo-pulse, be sent to respectively this three PIN pipes, after processing by signal processing circuit 8, be sent to MUX 9 simultaneously, MUX 9 can be opened a wherein passage (echoed signal that a corresponding road PIN pipe is sent here) at set intervals, signal is sent to timing chip 10 again, and timing chip 10 is according to x time and calculate the distance of object 11 time of reception.
The echo that the LEFT of MUX 9, MID, RIGHT tri-road signals receive from three groups of PIN pipes respectively, STOP signal is the passage output of MUX 9, is sent to timing chip 10.The model of MUX 9 control chips is ADG659.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted technical solution of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (6)
1. a vehicle-mounted range laser radar system, is characterized in that: described radar system is divided into radiating portion and receiving unit; The single-chip microcomputer of radiating portion (2) transmitted is to radiating circuit (3), radiating circuit (3) sends high power burst pulse to emitting diode (4), emitting diode (4) Emission Lasers, after diffraction grating (5), be divided into three beams light wave, cover the region in San Ge orientation, the place ahead; In region, run into after object (11), the laser that part is reflected back sends PIN pipe group (7) to through the reception camera lens (6) of receiving unit, pass through again signal processing circuit (8), give MUX (9), MUX (9) is opened a certain passage at regular intervals, allow the echoed signal in a certain orientation wherein pass through, the signal passing through sends timing chip (10) again to.
2. a kind of vehicle-mounted range laser radar system according to claim 1, it is characterized in that: described timing chip (10) relatively pulse initial transmissions constantly t1 and the time of reception t2, calculate both mistimings (t2-t1), then distance s=(the t2-t1)/2*c that calculates object, c is the light velocity.
3. a kind of vehicle-mounted range laser radar system according to claim 1, is characterized in that: described radar system is provided with power module (1) for whole system power supply.
4. a kind of vehicle-mounted range laser radar system according to claim 1, it is characterized in that: described PIN pipe group (7) is divided into three groups, receiving camera lens (6) receives after echo-pulse, be sent to respectively three groups of PIN pipes and be sent to MUX (9) simultaneously after signal processing circuit (8) is processed, MUX (9) can be opened a wherein passage at set intervals, signal is sent to timing chip (10) again, and timing chip (10) is according to x time and calculate the distance of object (11) time of reception.
5. a kind of vehicle-mounted range laser radar system according to claim 1, it is characterized in that: the echo that LEFT, the MID of described MUX (9), RIGHT tri-road signals receive from three groups of PIN pipes respectively, STOP signal is the passage output of MUX (9), is sent to timing chip (10).
6. a kind of vehicle-mounted range laser radar system according to claim 5, is characterized in that: the model of described MUX (9) control chip is ADG659.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235212.8A CN103983983A (en) | 2014-05-29 | 2014-05-29 | Vehicle-mounted ranging laser radar system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235212.8A CN103983983A (en) | 2014-05-29 | 2014-05-29 | Vehicle-mounted ranging laser radar system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103983983A true CN103983983A (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410235212.8A Pending CN103983983A (en) | 2014-05-29 | 2014-05-29 | Vehicle-mounted ranging laser radar system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297760A (en) * | 2014-10-09 | 2015-01-21 | 中国科学院合肥物质科学研究院 | Vehicle-mounted impulse type laser radar system |
| CN106353766A (en) * | 2016-09-08 | 2017-01-25 | 上海理鑫光学科技有限公司 | Laser radar multipoint distance measurement system on basis of diffraction optical components |
| CN108181621A (en) * | 2016-12-08 | 2018-06-19 | 北京万集科技股份有限公司 | A kind of bidifly light drive circuit and scanning type laser radar ranging equipment and method |
| CN108196265A (en) * | 2016-12-08 | 2018-06-22 | 北京万集科技股份有限公司 | A kind of multi-path laser flight time parallel acquisition system and method |
| CN109283541A (en) * | 2017-07-21 | 2019-01-29 | 比亚迪股份有限公司 | Mobile lidar range unit, method and automobile |
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| EP1045258A2 (en) * | 1999-04-15 | 2000-10-18 | Honda Giken Kogyo Kabushiki Kaisha | Multi-channel radar apparatus |
| CN102540195A (en) * | 2011-12-29 | 2012-07-04 | 东风汽车有限公司 | Vehicle five-path laser radar and control method thereof |
| CN102749626A (en) * | 2012-07-17 | 2012-10-24 | 奇瑞汽车股份有限公司 | Radar sensor, automobile and target direction identification method |
| CN203275648U (en) * | 2013-05-28 | 2013-11-06 | 奇瑞汽车股份有限公司 | Multipath laser receiving circuit |
-
2014
- 2014-05-29 CN CN201410235212.8A patent/CN103983983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1045258A2 (en) * | 1999-04-15 | 2000-10-18 | Honda Giken Kogyo Kabushiki Kaisha | Multi-channel radar apparatus |
| CN102540195A (en) * | 2011-12-29 | 2012-07-04 | 东风汽车有限公司 | Vehicle five-path laser radar and control method thereof |
| CN102749626A (en) * | 2012-07-17 | 2012-10-24 | 奇瑞汽车股份有限公司 | Radar sensor, automobile and target direction identification method |
| CN203275648U (en) * | 2013-05-28 | 2013-11-06 | 奇瑞汽车股份有限公司 | Multipath laser receiving circuit |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297760A (en) * | 2014-10-09 | 2015-01-21 | 中国科学院合肥物质科学研究院 | Vehicle-mounted impulse type laser radar system |
| CN106353766A (en) * | 2016-09-08 | 2017-01-25 | 上海理鑫光学科技有限公司 | Laser radar multipoint distance measurement system on basis of diffraction optical components |
| CN106353766B (en) * | 2016-09-08 | 2019-10-11 | 上海理鑫光学科技有限公司 | Laser radar multiple point distance measurement system based on diffraction optical element |
| CN108181621A (en) * | 2016-12-08 | 2018-06-19 | 北京万集科技股份有限公司 | A kind of bidifly light drive circuit and scanning type laser radar ranging equipment and method |
| CN108196265A (en) * | 2016-12-08 | 2018-06-22 | 北京万集科技股份有限公司 | A kind of multi-path laser flight time parallel acquisition system and method |
| CN108196265B (en) * | 2016-12-08 | 2024-05-10 | 武汉万集光电技术有限公司 | Multi-path laser flight time parallel acquisition system and method |
| CN109283541A (en) * | 2017-07-21 | 2019-01-29 | 比亚迪股份有限公司 | Mobile lidar range unit, method and automobile |
| CN109283541B (en) * | 2017-07-21 | 2023-10-13 | 比亚迪股份有限公司 | Vehicle-mounted laser radar ranging device and method and automobile |
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Application publication date: 20140813 |
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