CN111342831A - Laser reflection type trigger device - Google Patents
Laser reflection type trigger device Download PDFInfo
- Publication number
- CN111342831A CN111342831A CN202010269634.2A CN202010269634A CN111342831A CN 111342831 A CN111342831 A CN 111342831A CN 202010269634 A CN202010269634 A CN 202010269634A CN 111342831 A CN111342831 A CN 111342831A
- Authority
- CN
- China
- Prior art keywords
- laser
- receiving device
- transmitting
- receiving
- wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000011514 reflex Effects 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241000256626 Pterygota <winged insects> Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
- H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention relates to a laser reflection type trigger device. The laser reflection type trigger device comprises a first laser transmitting and receiving device, a first laser receiving device and a second laser transmitting and receiving device, wherein the first laser transmitting device is used for transmitting a first light wave with a first wavelength, and the first laser receiving device is used for receiving a reflected wave of the first light wave; the second laser transmitting and receiving device comprises a second laser transmitting device and a second laser receiving device, the second laser transmitting device is used for transmitting a second light wave with a second wavelength, and the second laser receiving device is used for receiving a reflected wave of the second light wave; reflecting means for reflecting the first and second light waves; the first laser transmitting and receiving device and the second laser transmitting and receiving device are arranged at intervals, and the first wavelength is not equal to the second wavelength. The invention provides a laser reflection type trigger device which can improve the triggering stability of a photoelectric switch.
Description
Technical Field
The invention relates to the technical field of large-span reflective high-precision photoelectric switches, in particular to a non-contact laser reflective triggering device suitable for automobile collision tests.
Background
In the traditional automobile test, the test triggering of the photoelectric switch for collision includes three types, namely a physical strip switch trigger spring (tape sensor) and a laser correlation type and a laser reflection type.
In the physical strip switch trigger spring mode, the strip switch trigger strip becomes a disposable consumable and requires rewiring for each test. The service life, the cost and the particularity of the installation position all make the mode have many inconvenient places in use; the conventional correlation photoelectric switch action triggering method. Calibration is required for each test and the parallelism of the two mounting planes is often not easily aligned. The focus is not as desired, thereby affecting the actual received optical energy of the receiver. Directly causing the product to be inoperative or not triggered; although the traditional laser reflection type test triggering mode solves the problem of correlation calibration, due to the introduction of a reflecting surface, the triggering is unstable due to the false operation triggering of a photoelectric switch caused by sunlight, birds and vibration.
Therefore, a stable photoelectric switch triggering device which is convenient to install and calibrate, and can ensure stability and avoid interference caused by factors such as birds, winged insects, sunlight and the like is needed in an automobile real vehicle collision test.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a laser reflection type triggering device, in which two laser emitting and receiving devices with different wavelengths are arranged to respectively complete emitting and receiving, so as to obtain a stable triggering effect of a photoelectric switch.
In particular, the invention provides a laser reflection type trigger device, which comprises,
the first laser transmitting and receiving device comprises a first laser transmitting device and a first laser receiving device, wherein the first laser transmitting device is used for transmitting a first light wave with a first wavelength, and the first laser receiving device is used for receiving a reflected wave of the first light wave;
the second laser transmitting and receiving device comprises a second laser transmitting device and a second laser receiving device, the second laser transmitting device is used for transmitting a second light wave with a second wavelength, and the second laser receiving device is used for receiving a reflected wave of the second light wave;
reflecting means for reflecting said first and second light waves;
the first laser transmitting and receiving device and the second laser transmitting and receiving device are arranged at intervals, and the first wavelength is not equal to the second wavelength.
According to an embodiment of the invention, the first and second light waves are selected to be red light.
According to one embodiment of the invention, the first wavelength and the second wavelength range from 640 to 780 nm.
According to one embodiment of the present invention, the first laser emitting device and the second laser emitting device employ low-power laser emitters as emission sources.
According to an embodiment of the invention, the first and second light waves are parallel to each other.
According to an embodiment of the invention, the first and second light waves are located at the same horizontal position.
According to one embodiment of the invention, the first laser emission receiving device and the second laser emission receiving device are at the same distance from the reflecting device.
According to an embodiment of the invention, the laser transmitter further comprises a movable support, and the first laser transmitter receiver and the second laser transmitter receiver are arranged on the movable support.
According to an embodiment of the present invention, the laser processing system further includes a controller, the controller is electrically connected to the first laser transmitter-receiver and the second laser transmitter-receiver, and the controller starts the triggering operation according to the output signals of the first laser transmitter-receiver and the second laser transmitter-receiver.
According to an embodiment of the invention, the output information comprises an occlusion time slot, the occlusion time slot being longer than 2.3ms, a triggering action is initiated.
The invention provides a laser reflection type trigger device, which provides two groups of laser transmitting and receiving devices with different wavelengths for respectively completing transmitting and receiving, improves the triggering stability of a photoelectric switch, is easy to calibrate and is convenient to use.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention.
In the drawings:
fig. 1 shows a schematic structural diagram of a laser reflection type triggering device according to an embodiment of the invention.
Fig. 2 is a diagram showing a state of use of a laser reflex trigger mechanism according to another embodiment of the present invention.
FIG. 3 shows a simplified schematic diagram of a laser reflex trigger assembly of one embodiment of the present invention.
Wherein the figures include the following reference numerals:
first laser emitting and receiving device 101 of laser reflection type triggering device 100
The first light wave 103 of the second laser transmitting and receiving device 102
The second lightwave 104 emits waves 105, 107
Reflecting means 109 for reflecting the waves 106, 108
The movable bracket 110 collides against the buffering wall 111
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
Fig. 1 shows a schematic structural diagram of a laser reflection type triggering device according to an embodiment of the invention. As shown, a laser reflection type triggering device 100 includes a first laser emitting and receiving device 101, a second laser emitting and receiving device 102, and a reflection device 109.
The first laser emitting and receiving device 101 includes a first laser emitting device and a first laser receiving device. The first laser emitting device is used for emitting a first light wave 103 with a first wavelength to form an emitting wave 105. The first laser receiving means is arranged to receive a reflected wave 106 of the first optical wave 103. As will be readily appreciated, the first laser transceiver 101 is configured to transmit a transmitted wave 105 of the first light wave 103 and receive a reflected wave 106 of the first light wave 103.
Similarly, the second laser transmitter-receiver 102 includes a second laser transmitter and a second laser receiver. The second laser emitting device is used for emitting a second light wave 104 with a second wavelength to form an emitting wave 106. The second laser receiving device is used for receiving the reflected wave 108 of the second optical wave 104. The second laser transmitter-receiver 102 is used for transmitting the transmitted wave 106 of the second optical wave 104 and receiving the reflected wave 108 of the second optical wave 104.
The reflection device 109 is used for reflecting the first light wave 103 and the second light wave 104, so that the first laser receiving device and the second laser receiving device can receive the reflected wave 106 of the first light wave 103 and the reflected wave 108 of the second light wave 104 respectively.
Further, the first laser emitting and receiving device 101 and the second laser emitting and receiving device 102 are disposed at an interval, and the first wavelength is not equal to the second wavelength.
The laser reflection type triggering device 100 provided by the invention actually judges the triggering condition through two laser transmitting and receiving loops. Specifically, the laser reflection triggering device 100 further includes a controller for executing triggering control according to whether the two laser emitting and receiving circuits are interrupted. A short occlusion time slot is formed when any object enters the path of the transmitted waves 105, 107 and the reflected waves 106, 108 of the first and second lightwaves 103, 104, i.e., any one of the two lightwave circuits is instantaneously occluded. The first optical wave 103 emitted by the first laser emitting device of the first laser emitting and receiving device 101 is reflected by the reflecting device 109 to reach the first laser receiving device, and then immediately outputs a signal, which may be a switching value or a TTL signal, to indicate the blocking time slot. The second lightwave 104 emitted by the second laser transmitter of the second laser transmitter-receiver 102 is reflected by the reflection device 109 to reach the second laser receiver, and then outputs a signal, which may be a switching value or a TTL signal, to indicate an occlusion timeslot. The delay time generated between the switching values or TTL generated by the first laser transmitter receiver 101 and the second laser transmitter receiver 102 does not exceed 10us (microseconds). The controller may receive and respond to signals from the first laser transceiver 101 and/or the second laser transceiver 102 to initiate a triggering action. To avoid the ground from generating a small vibration, the controller may set the trigger action not to be activated if the shielding time slot is shorter than or equal to 2.3 ms. Similarly, the setting of the threshold value for the blocking time slot is also useful for avoiding a malfunction of the flying insect or the flying bird. By way of example and not limitation, the occlusion time slots may be adjusted in duration to accommodate different test environments. It will be readily appreciated that the controller may implement the specific operational control steps described above in conventional hardware or software form.
Preferably, the first light wave 103 and the second light wave 104 are red light. Because the recognition degree of ruddiness is higher, the staff at vehicle collision test field conveniently discerns, and ruddiness has the warning effect.
Preferably, the first wavelength and the second wavelength are in the range of 640-780 nm.
Preferably, the first laser emitting device and the second laser emitting device adopt low-power laser emitters as emitting sources. The low-power laser emitter has the advantages that the damage to eyesight caused by the fact that the laser beam is directly viewed by human eyes accidentally during use can be avoided, and the safety performance of testing is further improved.
Fig. 2 shows a state diagram of a laser reflex trigger apparatus 100 according to another embodiment of the present invention. Preferably, the first optical wave 103 and the second optical wave 104 are parallel to each other. Preferably, the first optical wave 103 and the second optical wave 104 are located at the same horizontal position. As shown in FIG. 2, the first laser transmitter receiver 101 and the second laser transmitter receiver 102 form the first lightwave 103 and the second lightwave 104 with the reflection device 109. The first and second lightwaves 103, 104 comprise respective transmit and reflected wave paths. The first light wave 103 and the second light wave 104 are parallel to each other and located at the same horizontal position, which facilitates the adjustment and focusing of the reflection device 109. The collision buffer wall 111 is arranged at the end point of the traveling route of the test collision vehicle, and the traveling route of the test vehicle is perpendicular to the directions of the first light wave 103 and the second light wave 104, so that accurate test results of vehicle collision can be obtained.
Preferably, the first laser transceiver 101 and the second laser transceiver 102 are located at the same distance from the reflection device 109, so as to ensure that the traveling path lengths of the emitted light wave and the reflected light wave of the first light wave 103 and the second light wave 104 are completely consistent, thereby ensuring that the time of photoelectric triggering is consistent.
Preferably, the reflection device 109 includes a first reflection portion and a second reflection portion. The first reflective portion is for reflecting the first light wave 103 and the second reflective portion is for reflecting the second light wave 104. Here, for example only, the reflection device 109 can be split into two parts to reflect the first light wave 103 and the second light wave 104, respectively, so as to facilitate the respective focusing of the first laser transmitter-receiver device 101 and the second laser transmitter-receiver device 102.
FIG. 3 shows a simplified schematic diagram of a laser reflex trigger assembly 100 in accordance with one embodiment of the present invention. As shown, the laser reflex trigger apparatus 100 further includes a movable support 110. The first laser emitting and receiving device 101 and the second laser emitting and receiving device 102 are disposed on the movable support 110 for convenient arrangement or putting in place. Similarly, the reflection device 109 may be disposed on another movable bracket 110, which facilitates the overall arrangement of the laser reflection trigger device 100.
Preferably, the reflecting device 109 is a mirror.
The laser reflection type triggering device provided by the invention provides two groups of laser transmitting and receiving devices which respectively complete transmitting and receiving and have different wavelengths, so that the triggering stability of the photoelectric switch is improved, and the laser reflection type triggering device is particularly suitable for a vehicle collision test. Compared with the prior art, the material consumption is saved, the focusing is convenient, and the assembly and the operation are convenient.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A laser reflection type trigger device comprises a laser reflection type trigger device,
the first laser transmitting and receiving device comprises a first laser transmitting device and a first laser receiving device, wherein the first laser transmitting device is used for transmitting a first light wave with a first wavelength, and the first laser receiving device is used for receiving a reflected wave of the first light wave;
the second laser transmitting and receiving device comprises a second laser transmitting device and a second laser receiving device, the second laser transmitting device is used for transmitting a second light wave with a second wavelength, and the second laser receiving device is used for receiving a reflected wave of the second light wave;
reflecting means for reflecting said first and second light waves;
the first laser transmitting and receiving device and the second laser transmitting and receiving device are arranged at intervals, and the first wavelength is not equal to the second wavelength.
2. The laser reflex trigger apparatus of claim 1, wherein the first and second light waves are red light.
3. The laser reflex trigger apparatus of claim 2, wherein the first wavelength and the second wavelength are in a range of 640 to 780 nm.
4. The laser reflex trigger apparatus of claim 1, wherein the first laser emitting apparatus and the second laser emitting apparatus employ low power laser emitters as emission sources.
5. The laser reflection triggering device as recited in claim 1 wherein said first and second optical waves are parallel to each other.
6. The laser reflex trigger apparatus of claim 5, wherein the first light wave and the second light wave are located at the same horizontal position.
7. The laser reflex trigger apparatus of claim 6, wherein the first laser emitting and receiving device and the second laser emitting and receiving device are located at the same distance from the reflection device.
8. The laser reflex trigger apparatus of claim 1, further comprising a movable support, wherein the first laser emission receiving means and the second laser emission receiving means are provided on the movable support.
9. The laser reflection type triggering device as claimed in claim 1, further comprising a controller electrically connected to the first laser emitting and receiving device and the second laser emitting and receiving device, wherein the controller starts triggering according to output signals of the first laser emitting and receiving device and the second laser emitting and receiving device.
10. The laser reflex trigger apparatus of claim 9, wherein the output information includes an occlusion time slot, and wherein the occlusion time slot is longer than 2.3ms, and wherein a trigger action is initiated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269634.2A CN111342831A (en) | 2020-04-08 | 2020-04-08 | Laser reflection type trigger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269634.2A CN111342831A (en) | 2020-04-08 | 2020-04-08 | Laser reflection type trigger device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111342831A true CN111342831A (en) | 2020-06-26 |
Family
ID=71183112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010269634.2A Pending CN111342831A (en) | 2020-04-08 | 2020-04-08 | Laser reflection type trigger device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111342831A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07161270A (en) * | 1993-12-10 | 1995-06-23 | Toshiba Corp | Laser trigger type gap switch device |
| JP2002168966A (en) * | 2000-11-29 | 2002-06-14 | Kyushu Hitachi Maxell Ltd | Object detection method by optical sensor |
| JP2008039686A (en) * | 2006-08-09 | 2008-02-21 | Denso Corp | Collision testing device |
| JP2009244218A (en) * | 2008-03-31 | 2009-10-22 | Yamatake Corp | Reflector type photoelectric switch and method for detecting body |
| CN203242170U (en) * | 2013-04-19 | 2013-10-16 | 滕州市飞天激光自动化技术有限公司 | Laser ultrahigh detector |
| CN106971629A (en) * | 2017-03-23 | 2017-07-21 | 中山市聚云软件科技有限公司 | Bridge-collision-avoidance early warning system |
| CN108254748A (en) * | 2018-01-15 | 2018-07-06 | 武汉理工大学 | Inland navigation craft superelevation alarm system and method based on laser ranging and radar image |
| CN209198091U (en) * | 2018-11-16 | 2019-08-02 | 大陆泰密克汽车系统（上海）有限公司 | Signal trigger device for vehicle impact test |
| CN211481253U (en) * | 2020-04-08 | 2020-09-11 | 上海机动车检测认证技术研究中心有限公司 | Laser reflection type trigger device |
-
2020
- 2020-04-08 CN CN202010269634.2A patent/CN111342831A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07161270A (en) * | 1993-12-10 | 1995-06-23 | Toshiba Corp | Laser trigger type gap switch device |
| JP2002168966A (en) * | 2000-11-29 | 2002-06-14 | Kyushu Hitachi Maxell Ltd | Object detection method by optical sensor |
| JP2008039686A (en) * | 2006-08-09 | 2008-02-21 | Denso Corp | Collision testing device |
| JP2009244218A (en) * | 2008-03-31 | 2009-10-22 | Yamatake Corp | Reflector type photoelectric switch and method for detecting body |
| CN203242170U (en) * | 2013-04-19 | 2013-10-16 | 滕州市飞天激光自动化技术有限公司 | Laser ultrahigh detector |
| CN106971629A (en) * | 2017-03-23 | 2017-07-21 | 中山市聚云软件科技有限公司 | Bridge-collision-avoidance early warning system |
| CN108254748A (en) * | 2018-01-15 | 2018-07-06 | 武汉理工大学 | Inland navigation craft superelevation alarm system and method based on laser ranging and radar image |
| CN209198091U (en) * | 2018-11-16 | 2019-08-02 | 大陆泰密克汽车系统（上海）有限公司 | Signal trigger device for vehicle impact test |
| CN211481253U (en) * | 2020-04-08 | 2020-09-11 | 上海机动车检测认证技术研究中心有限公司 | Laser reflection type trigger device |
Non-Patent Citations (1)
| Title |
|---|
| 无: "飞天激光入侵探测器应对误报警的解决方案", pages 2, Retrieved from the Internet <URL:https://www.sohu.com/a/274690100_100302230> * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10591602B2 (en) | Object detector and sensor | |
| US10031212B2 (en) | Object detection device and remote sensing apparatus | |
| US10634813B2 (en) | Multi-layered safety system | |
| KR102134178B1 (en) | Friend or foe identification system and method | |
| CN110174678B (en) | Object detection device | |
| US20210333370A1 (en) | Light emission method, device, and scanning system | |
| CN116710801A (en) | LiDAR system with emitted light power monitor | |
| CN109923437B (en) | Laser radar system | |
| KR102233064B1 (en) | How to detect the operating conditions of a laser-based particle detector | |
| CN112034486B (en) | Laser radar and control method of laser radar | |
| KR100559421B1 (en) | System for preventing rear-ending for vehicle | |
| CN211481253U (en) | Laser reflection type trigger device | |
| CN111342831A (en) | Laser reflection type trigger device | |
| CN211826520U (en) | Laser light path system and laser distance measuring device | |
| CN209198091U (en) | Signal trigger device for vehicle impact test | |
| US20230028749A1 (en) | Lidar with multi-range channels | |
| JPS6120877A (en) | Optical radar equipment for vehicle | |
| CN110865386A (en) | Laser light path system and laser distance measuring device | |
| CN219456503U (en) | Laser radar based on adjustable attenuator | |
| CN112688166B (en) | Chaotic laser and laser radar | |
| US20240201388A1 (en) | Lidar Sensor for a Vehicle, Having a Receiving Element for Focusing in a Focal Point Region, Vehicle Comprising a Lidar Sensor, and Method for Operating a Lidar Sensor | |
| CN212275965U (en) | Shading assembly | |
| WO2021199646A1 (en) | Sensor device | |
| US20230168353A1 (en) | Virtual windows for lidar safety systems and methods | |
| JPS61259185A (en) | Optical range finder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |