摘要
为测取轧制力矩,将电阻应变式扭矩传感器附加在传动轴上,随轴旋转,将传动轴上与轧制力矩成比例的应变信号转换为电信号——传感器输出信号。为实现传感器信号的智能调理,进而实现系统的即装即用,利用C1/R3、C2/R4及C3组成的抗射频干扰滤波器结合放大器AD623抑制、滤除电磁干扰信号;利用数字电位器X93156、AD623及CIP-51内核的混合信号处理器SOC,对传感器信号进行放大、实时修正、A/D变换、信号校准、生成串行的调制信号、调制载波、并最终转换为用于驱动红外LED的已调波信号。为将传动轴上的信号传送到地面,使一组红外LED沿传动轴圆周均布,均布角小于红外LED的散射角,从而使地面的信号接收处理系统可连续接收到与已调波对应的红外脉动光。信号接收处理系统,将接收到的脉动光解调/还原,从而实现了轧制力矩信息的红外遥测。
In order to measure the moment of the rolling torque, the design put the torque sensor of resistance strain chip on the transmitting shaft, circumgyrating by the shaft, transferred the strain signal from the drive shaft, which was proportional to the torque, into electrical signals, output signal of the sensor. For the realization of the sensor signal＇s smart modulation, proceeding to realize that the system was implemented install and play, it used anti-RF interference filter contained by C1/R3,2/R4 and C3 with amplifiers AD623 to inhibit, filter the electromagnetic interference signal; used digital potentiometer X93156, AD623 and mixedsignal processor and with core of CIP-51, made the signal of sensor amplification, real-time correction, A/D conversion, generate serial modulation signals, carrier modulation, eventually converted to infrared LED driver for the strength of the signal wave. Infrared UEDs were equally distributed on the circumference of rotating shaft, and the equally distributing angle was less than the scattering angle of infrared LEDs. So that the ground signal reception system could receive and transfer the corresponding wave infrared pulse of light. Signal-receiving system receives the pulse of light to demodulation and reduction, thereby realizes the rolling moment information infrared telemetry.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第5期139-142,共4页
Instrument Technique and Sensor
关键词
SOC
扭矩测量
红外遥测
信号调理
系统校准
SOC
torque measurement
infrared telemetry
signal condition
system calibration
