摘要
在智慧家居的传感器数据采集系统中,从电子系统抗干扰性能考虑,传感器的输出信号与采集系统是不能共地的,这就需要设计隔离放大器,将传感器的输出信号尽量不失真地传输给采集系统。为此,使用高线性度模拟光电耦合器HCNR200设计了一种隔离放大器,能对单极性电压和双极性电压进行隔离传输。介绍了根据不同的输入电压计算电路参数的方法,给出了相应的电路原理图,并通过MULTISM17.0仿真软件验证了所设计电路的正确性和可行性。
In sensor information collecting system of smart home, considering ability of anti-interference of system, output signal of the sensor and collection system do not share the ground. So it requires a isolation amplifier to transmit output signal of sensor to collection system without distortion. Therefor, one isolation amplifier was designed with high-linearity analog optocouplers HCNR200, the bipolar voltage respectively could be isolated. Methods of calculating circuit parameters according to different input voltage were explained in detail, the corresponding circuit diagram was given, and the correctness and feasibility of designed circuit was verified by simulation with MULTISM17.0.
作者
王毅
包西平
刘海斌
李帅
WANG Yi;BAO Xiping;LIU Haibin;LI Shuai(Xuzhou Vocational College of Industrial Technology,Xuzhou,Jiangsu 221005,China)
出处
《机电工程技术》
2020年第5期89-91,236,共4页
Mechanical & Electrical Engineering Technology
基金
2018年徐州工业职业技术学院科学技术类项目(编号:XGY2018A007)
2019年江苏省大学生创新训练计划项目(编号:201913107017Y)。
