CN205562800U - A laser rangefinder for automobile anti -collision system - Google Patents
A laser rangefinder for automobile anti -collision system Download PDFInfo
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- CN205562800U CN205562800U CN201620066131.4U CN201620066131U CN205562800U CN 205562800 U CN205562800 U CN 205562800U CN 201620066131 U CN201620066131 U CN 201620066131U CN 205562800 U CN205562800 U CN 205562800U
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- laser
- camera lens
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- circuit board
- transmitting
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- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The utility model discloses a laser rangefinder for automobile anti -collision system, it includes shell, camera lens, baffle, laser transmission system and laser receiving system, the camera lens is including transmission camera lens and receipt camera lens, transmission camera lens and receipt camera lens integrated into one piece, the laser that laser transmission system launched passes through the transmission camera lens focuses on the outside transmission in back, the laser receiving system passes through receive the laser beam that camera lens receive reflection returns, laser transmission system includes the LD laser instrument. The utility model discloses an it adopts efficient LD laser instrument a laser rangefinder for automobile anti -collision system, can realize that the accurate of distance between car and the car detects through laser rangefinder's principle, and its is small moreover, repetition frequency is high. Make laser rangefinder's efficiency bring up to about 10%, moreover the difficult problem that other pump lasers need periodic replacement laser lamp -house has also been solved to the laser of LD laser instrument pipe longe -lived, attenuates the shock of a rotor and enhances the reliability of a system.
Description
Technical field
This utility model relates to a kind of laser ranging system, specifically refers to a kind of swashing for anti-collision system for automobile
Optical range finding apparatus.
Background technology
Along with increasing rapidly of vehicle, vehicle accident grows in intensity.Such as: vehicle in car of running at high speed,
When barrier or front vehicles emergency brake occurs suddenly in front, when needing certain reaction due to driver
Between carry out skidding, easily brake occurs not in time, causes the generation of collision accident.
Along with the active safety of automobile is increasingly paid close attention to by people, anti-collision system for automobile arises at the historic moment.Typically
Anti-collision system for automobile in, owing to laser has good concordance, it is widely used in automobile collision preventing system
The sensor of system.
But in prior art, the distance between car and car is owing to using the metering system of non-laser, precision comparison
Difference.In order to accurately measure for the distance between car and car, it is to avoid automobile and front vehicles or barrier collision
Generation accident, needs a kind of laser ranging system for anti-collision system for automobile.
Utility model content
This utility model purpose there is provided a kind of laser ranging system for anti-collision system for automobile, and it uses
Efficient LD laser instrument, can realize the high-acruracy survey of distance between car and car.
This utility model solves technical problem and adopts the following technical scheme that a kind of swashing for anti-collision system for automobile
Optical range finding apparatus, it includes shell, camera lens, baffle plate, laser transmitting system and laser receiver system；
Described shell is cuboid, and it has been internally formed accommodation space；
Described laser transmitting system is arranged in the accommodation space of described shell；And it is fixed on the wall of described shell
On；
Described laser receiver system is arranged in the accommodation space of described shell；And it is fixed on the wall of described shell
On；
Being provided with baffle plate between described laser transmitting system and laser receiver system, described baffle plate is fixed on described
On the wall of shell；
Described camera lens is fixed on the left end of described shell, and is fixed on the wall of described shell；Described camera lens bag
Including transmitting camera lens and receive camera lens, described transmitting camera lens and reception camera lens are one-body molded；One end of described baffle plate
Contact with the junction of described transmitting camera lens and reception camera lens；
The laser that described laser transmitting system is launched is focused backward emission by described transmitting camera lens；
Described laser receiver system receives the laser beam reflected by described reception camera lens；
Described laser transmitting system includes LD laser instrument.
Optionally, described laser transmitting system also includes Laser emission drive circuit board；Described LD laser instrument is solid
On described Laser emission drive circuit board, it is positioned at the middle of described Laser emission drive circuit board.
Optionally, described Laser emission drive circuit board includes that high voltage power supply, Laser emission drive module and arteries and veins
Rush width control system module；Described high voltage power supply drives modular circuit to be connected with Laser emission, described pulse width
Control module drives module by signal to be connected with described Laser emission；Described Laser emission drives module and described LD
Laser instrument connects.
Optionally, described pulse width control module is single-chip microcomputer.
Optionally, described laser receiver system includes laser pick-off circuit board and pick-up probe；Described reception
Detector is fixed on described laser pick-off circuit board；Described laser pick-off circuit board includes message processing module
With time modular converter；Described LD laser instrument is connected with described time modular converter；Described pick-up probe with
Described time modular converter connects；Described time modular converter and described message processing module.
This utility model has the advantages that the Laser Measuring for anti-collision system for automobile of the present utility model
Away from device, it uses efficient LD laser instrument, can realize the distance between car and car by the principle of laser ranging
Accurate detection, and its volume is little, and repetition rate is high, decreases power supply pressure.Make described anti-for automobile
The efficiency of the laser ranging system hitting system brings up to about 10%, and the laser tube of described LD laser instrument
Life-span is long, and also solving other pump lasers needs to regularly replace a difficult problem for LASER Light Source；Improve system
Reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the laser ranging system for anti-collision system for automobile of the present utility model；
Fig. 2 is the structural representation of the laser ranging system for anti-collision system for automobile of the present utility model；
Fig. 3 is the attachment structure schematic diagram of Laser emission drive circuit board of the present utility model and other elements；
In figure, labelling is illustrated as: 1-shell；2-upper cover plate；3-lower cover；4-camera lens.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is further elaborated.
Embodiment 1
Present embodiments provide a kind of laser ranging system for anti-collision system for automobile, including shell 1, on
Cover plate 2, lower cover 3, camera lens 4, laser transmitting system and laser receiver system；
Described shell is cuboid, and it has been internally formed accommodation space；Open in the lower wall of described shell
Being provided with the first opening, described laser transmitting system is arranged in described shell by described first opening；Described
Lower cover covers described first opening, and is fixed on described shell.
Offering the second opening on the upper side wall of described shell, described laser receiver system is opened by described second
Mouth is arranged in described shell；Described upper cover plate covers described second opening, and is fixed on described shell.
It is provided with baffle plate, so that the cavity in described shell is divided into upper appearance between described upper cover plate and lower cover
With lower accommodation space between being empty.
Described camera lens is fixed on the left end of described shell, it is possible to be fixed on the sidewall of described shell；This reality
Executing in example, described camera lens includes launching camera lens and receiving camera lens, and described transmitting camera lens becomes with receiving camera lens one
Type, when on the sidewall being installed on described shell, one end of described baffle plate and described transmitting camera lens and reception mirror
The junction of head is in sealing contact；The laser that described laser transmitting system is launched is focused by described camera lens
Backward emission.
In the present embodiment, described laser transmitting system includes Laser emission drive circuit board and LD laser instrument；
Described Laser emission drive circuit board is fixed in described shell, and it includes high voltage power supply, Laser emission
Drive module and pulse width control module；Described high voltage power supply drives modular circuit to be connected with Laser emission,
Described pulse width control module drives module by signal to be connected, with by described pulse width with described Laser emission
Degree control module controls the pulse width of the laser launched；Described Laser emission drives module and described LD
Laser instrument connects, to drive LD laser instrument described in module drive to launch laser by described Laser emission；This reality
Executing in example, described pulse width control module can be single-chip microcomputer, i.e. by swashing described in described Single-chip Controlling
Light emission drive circuit realizes above-mentioned functions.
In the present embodiment, for realizing the regulation of the parameter to described pulse width control module, described for vapour
The laser ranging system of car CAS also includes communication interface；Described communication interface and described pulse width control
Molding block signal connects, to receive, by described communication interface, the pulse control signal that host computer sends, thus
Control the pulse width of described laser.In the present embodiment, it is preferred that described host computer is computer；Described
Communication interface is RS232 communication interface.
In the present embodiment, the described laser ranging system for anti-collision system for automobile also includes second source, institute
Stating second source and provide accessory power supply for Laser emission drive circuit board, the most described second source can be to pulse
Width control system module for power supply.
In the present embodiment, described LD laser instrument is positioned at described shell；As it is shown in figure 1, its laser launched
Direction to the left；When laser launched by described LD laser instrument, the left side wall of described shell offers the 3rd and opens
Mouthful, the laser that described LD laser instrument is launched can be passed described 3rd opening, is irradiated in by described camera lens
Housing exterior.
In the present embodiment, described LD laser instrument can be fixed on described Laser emission drive circuit board, is positioned at
The middle of described Laser emission drive circuit board, such that it is able to drive by described Laser emission drive circuit board
Laser launched by dynamic described LD laser instrument.
In the present embodiment, described Laser emission drive circuit board is square, offers respectively in its four angles
Hole, location, and be installed in described shell by hole, these four location, described lower accommodation space i.e. constitutes institute
State the laser instrument electronics structure chamber of the laser ranging system for anti-collision system for automobile；Thus when swashing described
After light emission system is fixed on described laser instrument electronics structure chamber, described LD laser instrument can be according to accordingly
Pulsed drive is luminous.
Described pulse width control unit function is to receive host computer to send pulse control signal, the most described upper
Machine is sent to the pulse control signal of pulse width control unit by communication interface, and according to above-mentioned pulse control
Signal processed controls the glow frequency of LD laser instrument.
In the present embodiment, described Laser emission drive circuit board also includes signal processing module, at described signal
Reason module is connected with described pulse width control module and described host computer signal respectively, is used for producing triggering letter
Number to pulse width control unit, and communicate with host computer.
Described laser receiver system includes laser pick-off circuit board and pick-up probe；Described pick-up probe is solid
On described laser pick-off circuit board, for detection by the return laser beam after described camera lens；Described sharp
Optical receiving circuit plate includes message processing module and time modular converter；Described LD laser instrument turned with the described time
Die change block is connected；For commencing signal being transferred to described time modular converter；Described pick-up probe and institute
Stating time modular converter to connect, for end signal being transferred to described time modular converter, thus passing through institute
The time modular converter of stating obtains starting and the time difference of end signal；Described time modular converter and described information
Processing module, and described time difference is transferred to described message processing module；Described message processing module is to institute
State time difference signal to process, thus calculate the distance between car and car.
In the present embodiment, described message processing module can be single-chip microcomputer.
Laser ranging system for anti-collision system for automobile of the present utility model, it uses efficient LD laser
Device, volume is little, and repetition rate is high, decreases power supply pressure.Make the described Laser Measuring for anti-collision system for automobile
Efficiency away from device brings up to about 10%, and the life-span of the laser tube of described LD laser instrument is long, also solves
Other pump lasers need to regularly replace a difficult problem for LASER Light Source；Improve the reliability of system.
Employing wavelength of the present utility model be the LD laser instrument of 905nm as light source, at described LD laser instrument
While launching laser, transmitting pulse is input to the start port (start of time modular converter (TDC)
Signal), trigger time difference measurement, and launch by launching camera lens；Described transmitting camera lens can be to described LD
The laser that laser instrument is sent expands, and launches high-quality narrow-pulse laser light beam, and then meets
Range finding requirement to target.Described pick-up probe receives the transmitting pulse returned from object emission, and exports
To one stop signal of time modular converter；Poor now by start signal and stop signal deadline
Measure；The time modular converter record time difference between start to stop pulse.Described message processing module
Carrying out register configuration for time modular converter and measure of time controls, measure of time result is returned to letter
Number processing module, carries out accurately calculating and processing of distance by algorithm.
The sequencing of above example only for ease of describing, does not represent the quality of embodiment.
Last it is noted that above example is only in order to illustrate the technical solution of the utility model, rather than right
It limits；Although this utility model being described in detail with reference to previous embodiment, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it,
Or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of this utility model each embodiment technical scheme.
Claims (5)
1. the laser ranging system for anti-collision system for automobile, it is characterised in that include shell, camera lens,
Baffle plate, laser transmitting system and laser receiver system；
Described shell is cuboid, and it has been internally formed accommodation space；
Described laser transmitting system is arranged in the accommodation space of described shell；And it is fixed on the wall of described shell
On；
Described laser receiver system is arranged in the accommodation space of described shell；And it is fixed on the wall of described shell
On；
Being provided with baffle plate between described laser transmitting system and laser receiver system, described baffle plate is fixed on described
On the wall of shell；
Described camera lens is fixed on the left end of described shell, and is fixed on the wall of described shell；Described camera lens bag
Including transmitting camera lens and receive camera lens, described transmitting camera lens and reception camera lens are one-body molded；One end of described baffle plate
Contact with the junction of described transmitting camera lens and reception camera lens；
The laser that described laser transmitting system is launched is focused backward emission by described transmitting camera lens；
Described laser receiver system receives the laser beam reflected by described reception camera lens；
Described laser transmitting system includes LD laser instrument.
Laser ranging system for anti-collision system for automobile the most according to claim 1, it is characterised in that
Described laser transmitting system also includes Laser emission drive circuit board；Described LD laser instrument is fixed on described laser
Launch on drive circuit board, be positioned at the middle of described Laser emission drive circuit board.
Laser ranging system for anti-collision system for automobile the most according to claim 2, it is characterised in that
Described Laser emission drive circuit board includes that high voltage power supply, Laser emission drive module and pulse width control mould
Block；Described high voltage power supply drives modular circuit to be connected with Laser emission, described pulse width control module and institute
Stating Laser emission drives module by signal to connect；Described Laser emission drives module to be connected with described LD laser instrument.
Laser ranging system for anti-collision system for automobile the most according to claim 3, it is characterised in that
Described pulse width control module is single-chip microcomputer.
Laser ranging system for anti-collision system for automobile the most according to claim 4, it is characterised in that
Described laser receiver system includes laser pick-off circuit board and pick-up probe；Described pick-up probe is fixed on
On described laser pick-off circuit board；Described laser pick-off circuit board includes message processing module and time modulus of conversion
Block；Described LD laser instrument is connected with described time modular converter；Described pick-up probe was changed with the described time
Module connects；Described time modular converter and described message processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620066131.4U CN205562800U (en) | 2016-01-22 | 2016-01-22 | A laser rangefinder for automobile anti -collision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620066131.4U CN205562800U (en) | 2016-01-22 | 2016-01-22 | A laser rangefinder for automobile anti -collision system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205562800U true CN205562800U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620066131.4U Expired - Fee Related CN205562800U (en) | 2016-01-22 | 2016-01-22 | A laser rangefinder for automobile anti -collision system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205562800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108163721A (en) * | 2017-12-29 | 2018-06-15 | 江苏中科大港激光科技有限公司 | A kind of container front crane reversing active safety prior-warning device |
-
2016
- 2016-01-22 CN CN201620066131.4U patent/CN205562800U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108163721A (en) * | 2017-12-29 | 2018-06-15 | 江苏中科大港激光科技有限公司 | A kind of container front crane reversing active safety prior-warning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 |