多通道电缆检测装置的设计与实现

Design and Implementation of Multichannel Detector for Multicore Cable

为方便地对高密度多芯电缆进行检测,解决高密度多芯电缆的原位测试问题,设计了一种多通道电缆检测装置。检测电路采用ADG706对检测通道进行了扩展,各个通道采用分时复用方式完成数据通信和采样,计算了通道建立时间和最大采样速率,给出了相应硬件实例、软件设计框图和通讯接口设计。应用表明该装置可方便地用于各型高密度多芯电缆在原位进行完好性测试,避免漏检漏测,提高了检测的准确性。

In order to test high density muhicore cable more conveniently and overcome a difficulty on insitu testing of high density muhieore cable, a muhichannel detector was designed. Detecting electric circuit extended muhichannel with ADG706, each channel accomplished data communication and sampling with time division multiplexing. The channel settling time and the max sampling rate were calculated. The hardware and software designing illustration were given and communication interface were discussed. The applications showed that this detector could be applied to high density muhieore cable for undamaged and unmoved test. Test omission could be avoided and test accuracy could be improved with the detector.