高炉炉衬厚度的超声波采集器设计与研究

Design and Research of Ultrasonic Collector of Blast Furnace Lining Thickness

采用超声波对高炉炉衬厚度进行测量,设计中用高压对超声波探头进行激励,声波会在金属棒表面和底面产生回波,利用后续的信号接收电路对信号进行放大、滤波、检波和电压比较,再由单片机对信号进行识别,并计算出表面和底面回波信号的间隔时间,进而推出炉衬的厚度;模块会将厚度及设定的声速进行本地显示,模块支持RS485通信接口及Modbus通信协议,可以使用上位机通过485总线向模块发送读取指令使模块将数据传到上位机,并有上位机对数据进行显示、保存、计算等处理。

Ultrasonic detection technology was used for the thickness measurements of blast furnace lining. The ultrasonic probe was excited with high-pressure in the designe, acoustic echo signal generated at the surface and the bottom surface of a metal rod was amplified, filtered, detected and compared in voltage using a subsequent signal receiving circuit, and the signal was identified by a microcontroller and the interval between the surface and the bottom surface of the echo signal was calculated, and then the thickness of the lining was deduced; the module will display the thickness and set sound velocity in local; the module supports RS485 communication interface and Modbus communication protocols, you can send reading instruction to the module using the PC via the 485 bus so that the module will send data to the PC for data display,storage, computing and other treatment.