田径比赛电子计时器可自动复位方法研究  

Research on automatic reset method of electronic timer in track and field competition

作　　者：万肖 WAN Xiao(Shanxi Institute of Technology,Xi'an 710300,China)

机构地区：[1]陕西国防工业职业技术学院,西安710300

出　　处：《自动化与仪器仪表》2021年第1期47-50,54,共5页Automation & Instrumentation

基　　金：陕西省体育局常规课题:“丝绸之路”陕西段体育旅游产业竞争力研究(No.2020115)。

摘　　要：传统方法复位计时数据时,高低电平转换次数较少,导致复位信号响应不够充分,电子计时器消耗功率较大。为此,对田径比赛电子计时器可自动复位方法进行研究。在传统复位电路基础上,增加RC滤波电路,分频复位请求的脉冲信号。计算启动源电压及延迟时间,对复位信号进行输出。控制电子计时器复位信号端,检测复位信号,并分配给电子计时器各部件,实现自动复位。此次方法与两种传统方法进行对比实验,调节输入电压,并从中选取稳定电压,引入干扰周期信号,在正常和干扰环境中,测试复位时消耗功率,结果表明,此次方法降低了消耗功率,实现低功耗电子计时器。When the traditional method is used to reset the timing data,the number of high and low level conversion is less,which leads to insufficient response of reset signal and high power consumption of electronic timer.Therefore,the automatic reset method of track and field timer is studied.On the basis of traditional reset circuit,RC filter circuit is added to divide frequency reset request pulse signal.The starting source voltage and delay time are calculated to output reset signal.Controlling reset signal terminal of electronic timer,to detect reset signal,and it is distributed to each part of electronic timer to realize automatic reset.Compared with the two traditional methods,adjusting the input voltage,the stable voltage is selected and the interference periodic signal is introduced.In the normal and interference environment,power consnmption is test during reset.The results show that this method reduces the power consumption and realizes the low power consumption electronic timer.

关 键 词：田径比赛 电子计时器 自动复位 复位电路 复位信号 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]