中文摘要：

针对基于混沌随机信号相关法的电缆故障检测方法存在的成本高、易引起误判的问题,提出了一种面向电缆故障检测的布尔混沌时域反射法。该方法将布尔电路产生的混沌信号分为2路：一路作为参考信号,另一路作为探测信号注入被测电缆;通过对参考信号和电缆故障点处的反射信号进行采样和相关运算,即可从相关峰的时间延迟和幅值信息中推断出故障点的位置和故障类型。电缆故障测试结果表明,布尔混沌时域反射法可以对电缆的短路、断路和阻抗失配等故障进行检测,且测量范围和空间分辨率分别可达到900m和0.1m。

英文摘要：

For problems that fault detection method of cable based on chaos random signals correlation method has high cost and easily leads to miscarriage of justice,a kind of Boolean-chaos time domain reflectometry for fault detection of cable was proposed.The chaotic signal generated by Boolean chaotic circuit is divided into two parts：one serves as a reference signal,and the other serves as a probe signal which is sent down to the wire.The fault is detected by correlating the reference signal with the probe signal back-reflected from the fault,namely the location and type of fault point can be inferred from the time delay and amplitude information of the correlation peak.The experimental results show that Booleanchaos time domain reflectometry can be used to detect faults such as open circuits,short circuits and impedance discontinuities.Furthermore,a spatial resolution of 0.1mand a maximum range of about 900 m can be achieved.