Research Of Engineering Measurement System Based On Radio Frequency Sensor

With the development of the national economy,the construction of underground engineering is an important part of urbanization,and its safety issues are receiving more and more attention.In order to ensure the safety of personnel at the construction site and reduce the impact on surrounding buildings,it is necessary to monitor the important engineering physical quantities of the construction site,and the manual monitoring methods are often time-consuming and labor-intensive,and the early warning is slow.The application of wireless sensing technology in engineering monitoring Received attention.Therefore,this paper designs and develops an engineering measurement system based on RF sensing technology.The foundation pit displacement measurement is used as the application scenario to build the hardware framework,complete the software programming,propose the measurement method,and design the experimental verification system accuracy.The overall architecture of the system is mainly composed of a dip angle acquisition module,a data processing module,an RFID tag,an RFID reader,and a host computer.The tilt sensor module collects the angle signal in real time,and the analog-to-digital conversion module of the microcontroller converts and processes the acquired signal,and transmits the processed angle data to the tag chip through the IIC bus;the wireless communication module uses the tag chip as a transponder,and utilizes The handheld reader or desktop reader wirelessly collects data;at the same time,because the original reader PC software function is not complete enough,according to the system requirements,the host computer software development,realizes the communication between the PC and the reader,and optimizes Data display interface,increased database connection and write function,and improved human-computer interaction.Finally,the system carried out PCB drawing,made the actual product,designed the verification experiment according to the measurement method,and determined the accuracy of the engineering measurement system.