Notes

Laser Rangefinder Applications
Laser rangefinder is a type of equipment to measure the distance of the target, through the detection of the return signal of the emitted laser to attain the decision of the target range information. The series items have fully grown technology and steady performance, and can test a variety of static and dynamic targets, and can be applied on a variety of platforms.

Particular application examples.
1. Hunting and placing
Laser ranging technology can rapidly and accurately measure the range to the target, and is commonly used in reconnaissance measurement and weapons fire control systems.

2. Accuracy strike
Frequently used includes semi-active laser assistance, active laser assistance, driving beam guidance, near bomb fuze number and so on at that time, has the advantages of high assistance accuracy, strong anti-interference capability, easy structure, low cost and so on.

countermeasures
Optical countermeasures are a branch of modern-day electronic warfare and inhabit an essential position in future warfare. Using optoelectronic devices or devices through the action of light waves, obstruct, recognize the opponent optoelectronic radiation source details, compromise and even ruin the effectiveness of its optoelectronic equipment technical procedures.

4.Anti-terrorism and riot control
The use of brand-new laser and varying technology used in the field of anti-riot, laser stunning non-blinding, to accomplish the result of riot control

5. Topographic mapping
LIDAR technology is utilized for battlefield reconnaissance to get battlefield terrain information, which can produce very high resolution geometric images, range images, speed images, and so on 6. Vehicle Collision Detector
In general, the majority of the existing cars and truck collision avoidance system laser range sensor utilizes laser beam to identify the distance in between the target automobile in front or in the back situation in a non-contact way, when the automobile distance is less than the established security range, the vehicle crash prevention system to the car for emergency braking, or the driver to send out an alarm, or thorough target car speed, distance, car braking range, reaction time etc to make immediate judgment and reaction to cars and truck driving, which can decrease a great deal of driving accidents. The benefits are a lot more obvious when utilized on highways.

7. Traffic flow monitoring and automobile profile drawing
By doing this of use is usually fixed to the gantry of the highway or important intersection, laser emission and reception vertical ground down, aligned with the middle of a lane, when there is car traffic, the laser distance measurement sensing unit can output the measured range worth change in real time, and then illustrate the summary of the determined cars and truck. Laser Rangefinder utilizes a small laser beam dispersion angle, the series of measurement is normally less than 30 meters, and needs a relatively high laser varying rate, normally requires a couple of hundred hertz can be. This can accomplish excellent results for tracking in essential roadway areas, can differentiate various car designs, the sampling rate of the body scan can reach 10 cm a point, and the traffic limitation height, limitation length, etc can be real-time output results.

sensing unit measures a range continuous, which is the range from the rangefinder to the ground. When an automobile passes under the rangefinder, the distance value modifications, and when the distance worth returns to the consistent again it is thought about that a vehicle has passed, according to this way we can keep track of the traffic circulation through some roadway sections. Nowadays, the commonly utilized method is the analytical averaging of the traffic flow over an amount of time, with a large evaluation part, and the technique of video data still has many difficulties of sensible application, therefore, the laser ranging data technique provides a possible option for the traffic circulation data.

8. Car Pedestrian Offense Monitoring
Given that the laser variety sensing unit beam is not a significant barrier, it does not hinder the typical operation of traffic when utilizing laser variety sensing unit to keep track of the roadway surface. Therefore, in some roadway areas where parking is restricted or pedestrian automobile traffic is prohibited, a laser beam is used to parallel the roadway at a certain height for repaired emission or at a certain angle for scanning, and when a car is illegally parked and runs a traffic signal or a pedestrian illegally crosses a guardrail, and so on, the laser distance measurement distance value changes and an alarm or warning can be provided. This application beam is not essential too broad, however generally requires a far away measurement to ensure a certain road length of protection range. The smart traffic offense tracking system composed in this way will be greatly used in the traffic Internet of Things.

9. Laser speed sensor
Laser distance measurement sensor is one of the earliest forms of laser range measurement innovation in the field of traffic management, and it is gradually gaining popularity in useful applications because of its excellent performance. Laser variety sensing unit is utilizing the principle of laser distance measurement, is the measured item two times with a particular time period of laser range measurement, acquire the distance modification of the determined things during this time period, so regarding get the movement speed of the determined object. Laser speed meter is divided into fixed and mobile two, repaired normally repaired in the roadside or gantry, to a fairly little angle to meet the incoming traffic, normally through the license plate reflection for measurement, measurement precision is fairly high, can reach ± 1 km/ h, speed variety up to 250 km/ h, distance variety in this application do not need to be too long, generally 80 to 100 meters can be. Mobile laser speed meter has higher operational requirements, the general beam divergence angle need to be greater than 3 mrad, in view of the principle of laser speed measurement, the laser beam must be intended perpendicular to the plane of the laser beam reflection point, and because the lorry is in a mobile state, the car airplane is not large, and speed measurement takes a specific amount of time, can just be utilized as a short-term speed measurement, forensic applications. Laser range sensing unit since the beam divergence angle is little, easy to speed forensics, unlike the radar Doppler speedometer, in the multi-lane measurement can not be sure of the specific speeding automobiles, and due to the fact that the laser speed sensor is given off near-infrared light waves, can not be radar detectors, electronic pet dogs, and so on probe side, and not quickly disturbed by city radar mess. In view of the above benefits of laser range measurement sensor, the application in intelligent transport will end up being more and more popular.As displayed in Figure 2.

10. Determining the width of packages on the conveyor belt
Two dispersive transmission time laser distance sensing units are used, installed face-to-face on both sides of the conveyor. This details is sent to the PLC, which subtracts L1 and L2 from the total range between the two laser sensing units to determine the width of package W.

11. Use on port terminals
Laser distance sensors are utilized to determine the range from ship to deliver and the relative speed from ship to ship. It is used to detect the relative distance and speed from a ship to a dock or to another ship while a ship is moving. The ship changes the speed and course of the ship's travel according to the digital signal output from the laser variety sensor.If you utilize the head, you can measure the range of the object in a certain angle variety, and you can know the distance and relative speed of the item in that angle.

12. Usage at train stations
Utilizing a laser distance sensor, the range from the train to the platform and the relative speed from train to train to the platform can be determined.

13. Usage on oil well
Using the laser distance sensor, you can determine the range and relative speed from the rover to the top of the tower, to prevent the incident of "up to hit the bottom" mishaps.


14. Protection of hydroforming passes away
The robot puts a pre-formed tube into the lower die of the hydraulic forming maker, and the operator needs to ensure that it is put in the right position each time. Prior to the upper die is dropped, a dispersion sensor determines the distance to the crucial area of television, which guarantees that the die is in the proper position prior to it closes.

15 、 Two-axis crane positioning
2 reflector-type sensors are used to face the reflector install, which is installed on two moving systems of the overhead crane. One system returns and forth and the other relocations left and right. As the crane drives the plate carrier rollers, the two sensors keep track of the range from each to the reflector, allowing constant tracking of the precise position of the crane through the PLC.
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