The laser sensor is used for fast measurement, and the network kernel of the PC industrial computer and the visual programming software VB and the sensor are used for real-time data transmission and processing. At the same time, a friendly interface PC control software is also designed. Field test data show that the system has good real-time performance and high measurement accuracy, and has certain practical value.

Highway toll stations

Used in highway toll booths for vehicle counting and safety protection. Teras Malaysia has applied hundreds of BEA laser sensors to its manual and automatic toll booth systems. The laser sensor adopts the time-of-flight (TOF) measurement principle, which can form 4 planes in the detection area to detect the vehicle. At the same time, the product also has functions such as anti-collision and vehicle safety protection. Compared with traditional light curtains, laser sensors have the advantages of high sensitivity, high accuracy, convenient installation, high cost performance and strong stability. [5]

Google's second-generation self-driving car: equipped with laser sensors

In addition to the laser sensor on the top of Google's second-generation self-driving car prototype, which is still quite obvious, other sensors are set very concealed.

The front, rear and sides of the vehicle are clearly marked with the Google self-driving car logo. The driving principle of Google's self-driving car is to continuously collect various accurate data of the vehicle itself and its surroundings through many sensors installed around the car, analyze and calculate through the processor in the car, and then control the car to drive according to the calculation results. . Unmanned vehicles will use GPS devices and sensors to accurately locate the vehicle's position and speed, and determine the surrounding pedestrians, vehicles, bicycles, traffic lights, and many other objects.

There is a 360° rotating laser holographic sensor on the roof of this Lexus, which can sense the conditions of the front, side and rear of the car almost simultaneously. The data collected by the sensors is fed to a processor located on the rear right side of the vehicle via the green data line. This laser sensor can also allow the unmanned vehicle to perform precise global positioning. The original L-shaped Lexus logo on the front of the car has also been removed and replaced by a radar sensor; it is used to measure the distance ahead and the speed of the vehicle, so as to determine the situation ahead and control the safe acceleration and deceleration of the vehicle.

There are also position sensors on the tire hub, which are used to detect wheel rotation and help the vehicle to locate. The heart of Google's unmanned vehicle - the processor is located on the right rear side of the vehicle. Data from various sensors will be transmitted here through data wires, and will be analyzed and processed by software to accurately sense and judge the difference in the vicinity of the unmanned vehicle. object. In addition to analyzing and judging the current position of objects around the unmanned vehicle, the unmanned vehicle also needs to be calculated by software to accurately predict the possible next position of each object. Finally, the driverless car will make safe driving decisions based on all the collected data, including controlling the speed and distance of the surrounding vehicles