The Design Of Wireless Communication System Based On Laser Displacement Sensor

Laser displacement sensor has a wide range of applications in the length, distanceand three-dimensional morphology. The laser displacement sensor’s data transmissionand power supply are mostly achieved through the cable in the market. Thistraditional wired transmission is not only cumbersome, but also any movement woulddraw winding difficult problem in the practical measurement process, and in manycircumstances laying cable is Impossible due to the space and conditions ofmeasurement. The data line and the power line have a severe impact on the widely useof sensor, which cause that many measurement methods cannot be implemented. Asno-wiring communication mode, technology of industrial wireless communication isanother hot technology in the industrial control field. Therefore wirelesscommunication system design as the same as cable connecting have a strong practicalvalue.According to the optoNCDT1700LL sensor’s data transmission characteristics,this paper combined with the measurement requirements of industrial field, use shortdistance wireless communication technology, design a variety of wirelesscommunication device, the main contents are as follows：This paper design wireless transmission system of bluetooth, wirelesscommunication system based on FPGA and RF technology, wireless network systembased on ZigBee. The machine measuring head was developed with the single sensor;measuring rod model was established based on double laser displacement sensors, anddeveloped overall system of the measuring rod; the terminal collecting nodes andcoordinator node module is developed for the multi sensors network measurementsystem, and made a further theoretical research of the the centring measurement withthe three sensors network system.This paper Solve the problem of sensor interface circuit, power supply of thesystem, and problem of the acquisition, processing, display, send sensor’s data. Thispaper adopts the method of hardware to build SPI communication interface anddesign a master module of SPI bus, configuration module, control module, serialmodule in Verilog HDL to communicate with nRF24L01RF module successfully. It solves the problem of the severe decline communication rate caused by simulatingSPI clock.This paper designs the circuit and PCB board of the wireless communication byAltium Designer. These wireless devices play an important role in differentmeasurement requirements of application, greatly increasing the efficiency of sensorin the measuring process, making the laser sensor application is more and morewidely, at the same time detection efficiency is greatly improved due to the wirelesstransmission technology. Wireless devices were stable, sustainable, and high real-time.The overall system satisfies the requirements of measurement, and has a strongpractical value.