【摘要】 以传统的基于单脉冲超声测距系统存在的缺陷为改进对象,研制了一种适用于各种复杂环境的,具有高抗干扰性的超声波测距系统。该超声波测距系统基于伪随机序列的良好特性,以嵌入式数字信号处理器(DSP)为核心器件,并在接收电路中添加了高速化绝对值电路模块,改进了超声波传感器的综合性能,实验结果表明:所设计的超声测距系统在同等条件下具有实时性好、抗干扰能力强和测量距离远等优点,能够适用于各种领域。更多还原

【Abstract】 A new type of ultrasonic ranging system with high anti-interfere performance was designed.The principle and performance of pseudo-random sequence was used during the research process of the new type ultrasonic ranging system.The hardware of the system included DSP TMS320VC5509A,transmitting circuit,receiving circuit and data acquisition circuit.High speed Absolute value circuit was added to the data acquisition circuit.The experimental results show that this system has good real-time performance,perfect anti-interference ability and large detecting range.更多还原