Research on the Non-contact Measurement System for the Level of Blast Furnace’s Material
|School||Xi'an University of Electronic Science and Technology|
|Keywords||Non-contact measurement Laser Ranging FPGA Self-triggering pulsed laser ranging|
Laser ranging technology to proceed in the field of non-contact measurement , analysis of several laser ranging technology ranging method has been widely used in pulsed laser ranging technology focus , detailed discussion of the proposed in recent years self-triggering pulse time-of-flight laser ranging technology , especially the double self- triggering pulsed laser ranging technology . According to its principle , the use of modern electronic design method, the design of the circuit of the basic hardware and software algorithms . First, in the laser emission , the use of advanced laser diode and high - performance driving chip to produce high quality optical pulses as a ranging signal ; Secondly, in the optical signal receiving side , the use of a special wavelength response extremely low noise avalanche diode amplification chip as the receiving device , the use of high-bandwidth signal to amplify the signal , and a combination of high - speed comparator is used to extract the useful signal ; again, the use of a large scale programmable logic device (FPGA) for counting and realize high-precision measurement of the pulse time of flight ; Finally , the choice of high-performance microcontroller complete data processing and related test device design .