Wheelset is an important part of the bogies of rolling stock. In actual use, the deviation of wheelrail shape and wheelset geometry will lead to the intensification of the wear of wheel tread and rim, which will affect the normal operation of rolling stock.

Laser displacement sensors can measure precision geometric measurements such as displacement, thickness, vibration, distance, and diameter. The laser displacement sensor has good straightness, and the accuracy of the laser displacement sensor is higher than that of the ultrasonic sensor we know. However, the laser generator is relatively complex and large, so higher requirements are put forward for the application range of laser displacement sensors.

In recent years, with the rapid development of precision manufacturing industry, the measurement accuracy has also put forward higher requirements, an industrial upgrading with "intelligent manufacturing" as the core is having a profound impact on the social economy. Optical inspection has gradually become the eye of high-end manufacturing and precision measurement, and its importance is self-evident.

On March 17, 2021, the much-anticipated Munich Shanghai Optical Fair (hereinafter referred to as "Optical Fair") was grandly opened at Shanghai New International Expo Center. As an Asian event in the laser, optics and optoelectronics industry, the exhibition area of this exhibition exceeds 60,000 square meters, and more than 1,200 exhibitors, covering laser and optoelectronics, optics and optical manufacturing, laser production and processing technology, imaging and machine vision, detection and quality control of the five plates, aiming to focus on the cutting-edge trend of the photon industry and promote the coordinated development of upstream and downstream resources in the industry.

At the Munich Shanghai Light Fair, Liyi Technology will bring spectral confocal displacement sensor series, wafer and flatness detection platform, automatic detection platform and other products and solutions to show W4.4711, more professional technical personnel to answer questions, welcome the vast number of industry partners to visit LIyi Technology Company booth!

When installed in multi-story buildings, the new sensors directly measure interstory drift, helping to determine whether the structure is safe after an earthquake.