会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 50. 发明申请
    • SIGNAL PROCESSING CIRCUIT FOR TRIGGER PROBE
    • 信号探测信号处理电路
    • WO1994021983A1
    • 1994-09-29
    • PCT/GB1994000548
    • 1994-03-17
    • RENISHAW PLCZANNIS, JamesWHITTLE, David, Raymond
    • RENISHAW PLC
    • G01B07/00
    • G01B7/002
    • An interface circuit for processing signals from a touch trigger probe is adapted to prevent the generation of false trigger signals during an inspection cycle. The probe incorporates a plurality of strain gauges, the voltage across which rises above a predetermined threshold when a stylus supported by the probe contacts a surface. When the probe is moved away from the surface and the stylus loses contact, the outputs across the gauges drop below the trigger threshold. The interface prevents false triggers when, while the stylus is in contact with a surface, a machine vibration occurs which causes an oscillation in the voltage across the gauges; the voltage dropping below the threshold level (causing the interface to reset), and then immediately passing back up through the threshold, causing the interface to emit a trigger signal. The interface of the present invention prevents such an occurrence by returning to its seated level only if, at a predetermined time interval after the sensor signal has passed below the predetermined threshold, the signal level from the or each sensor has not once again exceeded the predetermined threshold value.
    • 用于处理来自触摸式触发探针的信号的接口电路适于防止在检查周期期间产生假触发信号。 当探头支撑的触针接触表面时,探头包含多个应变计,当它们上方的电压上升到预定阈值以上。 当探头离开表面并且探针失去接触时,测量仪的输出降低到触发阈值以下。 当触针与表面接触时,界面可以防止错误的触发,发生机械振动,导致测量仪两端的电压发生振荡; 电压降至阈值以下(导致接口复位),然后立即通过阈值返回,导致接口发出触发信号。 本发明的接口只有在传感器信号已经超过预定阈值之前的预定时间间隔时才返回其就座电平,来自或每个传感器的信号电平没有再次超过预定的 阈值。