多通道实时远距离人工计时信号采集

采用光电偶合器、A/D转换器和并行接口芯片等设计数字信号采集系统实现人工计时信号采集,提高人工计时的效率和准确性。计时裁判员独立操作计时器开关产生的开关量信号用屏蔽电缆通过自带电源式插转箱连接到光电偶合器进行光电隔离,再由A/D转换器进行开关量信号的模数转换,最后由并行接口芯片接收,并通过数据总线发送到计算机。用软件控制人工计时信号的采集、计算、处理、存储和输出,从而实现人工记时信号的采集。

Signal collection of multi-channel real-time long distance hand-timing

A collection of digital signal through devices such as the photoelectric coupler is developed to collect signals of hand-timing so as to improve its efficiency and accuracy.Each individual hand-timing operator handles his/her own switch and the signals thus obtained will be connected through shielded cable to the auto-powered transmission case,and then to the photoelectric coupler to be separated photoelectrically.Next,the switch signals are converted by the A/D converter and eventually received by the parallel interface chip and output to the computer via the data bus.The software operated switch signal collection,calculation,processing,input and output has made the hand-timing signal collection possible and reliable.