Do you know the difference between laser displacement sensor and laser profile sensor? Today, Li Yi Xiaobian will share with you.

The laser displacement sensor uses the principle of laser triangle reflection to measure the light spot is a point, commonly known as a point laser. Laser contour scanner, in essence, the measurement principle is also triangular reflection, but the CCD imaging is a group, the measurement of light spot is a line, so commonly known as line laser. The measurement accuracy of the point laser is high, but if you want to measure all the forms of the object to be measured in a large range, because you need to measure one point at a time, the efficiency will be low. On the other hand, line lasers can be used for surface scanning to quickly form three-dimensional contours, but with reduced accuracy. Which one to choose depends on the requirements of the actual measurement task.

Laser displacement sensor and laser profile sensor are sensors based on the principle of laser triangulation. The point laser emitted by the laser displacement sensor measures the one-dimensional displacement, and the line laser emitted by the laser profile sensor measures the two-dimensional contour shape. Therefore, there are obvious differences and ranges of adaptation between them.

As the foundation of the Internet of Things, sensors are the key devices that support the operation of the Internet of Things. At present, a large number of applications of iot technology on shared bicycles will also focus on the input of virtual parking space sensors. The data collected by the sensors will be provided to regulatory authorities and bike-sharing companies. The data can not only be used to manage shared bikes, but also reflect real-time traffic conditions in the area. As electronic fences spread across the country, a national networked "shared sensor" industry will be born.

At present, many foreign institutions have begun to establish traffic portal open data, with the rapid development of urban traffic in China, real-time data will provide the relevant departments to solve the traffic safety situation with great convenience, but at the same time, these data are also related to national security, and most sensor network applications are facing serious security problems. Therefore, the first thing to do is to improve the positioning of the sensor and reduce security risks.