096基于单片机的热释电红外报警电路-无忧助学网 关键词：射频；发射电路；接收电路 [gap=612]Key word: The radio frequency； Shoot electric circuit； Receive electric circuit
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The system used AT89S52 as microcontroller,designed ultrasonic transmitter circuit,ultrasonic receiver circuit and data acquisition module,using the "software threshold" to measure the time of echo and introduced the temperature compensation circuit to improve its accuracy.
该系统采用AT89S52单片机作为控制核心,设计了超声波发射电路、接收电路以及数据采集模块,利用"软件阈值法"确定回波前沿,并引入温度补偿电路,提高系统测量精度。
参考来源 - 基于LTC1609的高精度超声测距系统设计·2,447,543篇论文数据，部分数据来源于NoteExpress
声信号发射电路的硬件设计。
实验结果表明，该发射电路具有良好的工作线性度和稳定性。
The experimental results demonstrate that this optoelectrical emission circuit is of good linearity and high stability.
监测电路包括555红外发射电路，放大电路以及频率译码电路。
The observation circuit consists of 555 infrared emitting circuit, amplifying circuit and frequency decoding circuit.
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