智能按键开关参数测量仪

Design of Measuring Instrument for Button Switches Parameters

设计了一种按键开关参数测量仪,可应用于生产线上检测按键开关的良品和不良品。由机械按键动作装置、压力传感器、A/D数据采集、按键电路、液晶显示屏、多路继电开关、串口通信、PC机和单片机组成。外部触发后开始采集压力数据,测量和计算出OF、OD和CK值,然后与设定值比较,根据结果控制相应的继电器开关闭合,同时通过串口往PC机上发送相关的字符串,并在液晶显示模块上同屏显示。实验表明,该测量仪性能稳定,工作可靠。

This kind of admeasuring apparatus,designed with a key switch as the parameter,can be applied to the production line to separate good products from defective ones.It consists of a mechanical push-button device,a pressure transducer,A/D data acquisition,push-button circuit,LCD,a multiple relay switch,serial communication,PC and SCM.After the action of the outside trigger,it collects pressure data,showing the level of OF,OD and CK to be compared with the data set up in advance.In line with the comparison result,it closes certain relay switches accordingly and,in the meantime,sends character strings to the PC through serial ports.The character strings will be simultaneously visible on the LCD.Experiments show that this admeasuring apparatus has a stable and reliable performance with high precision and desirable indicating value.