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It is very difficult to ensure that the shield machine excavates along a predetermined trajectory during its operation. Its control system integrates optical, mechanical, electrical, hydraulic, sensing, and information technology, and has functions such as excavating and cutting soil, transporting soil debris, measuring and guiding correction. The inclination sensor developed by Huilian Technology can not only measure the inclination angle of the shield machine body, but also measure the inclination angle of the excavation chamber. Through a series of complex calculations, it can calculate the distance of excavation deviation and other data, which plays a very important role in correcting guidance. The control system composed of inclination sensors, other sensors, and motors makes the shield machine more automated, labor-saving, and faster in construction speed.

The tilt angle sensor developed by Huilian Technology has broken through the technical key of high-precision tilt angle sensors abroad, and is at the forefront of the country in measurement accuracy, response frequency, reliability, and other aspects. The inclination sensor used on shield tunneling machines first requires strict anti vibration capabilities. After testing, the long-term stability of the product reaches 0.05 °, and it needs to have high resolution and waterproof level, which can be used in underground humid environments. Huilian Technology relies on a strong technical team and sincere service attitude to provide perfect solutions for shield machine customers, which will enable the tilt angle sensor to be increasingly applied. In 2017, Huilian Company participated in the cooperation project between Shanghai Metro Shield Equipment Engineering Co., Ltd. and Suzhou Rail Transit Construction, and received good feedback, which also laid a solid foundation for the future development of Huilian Technology.