Circuit arrangement for transmitting measurement values on vehicle wheels
    1.
    发明授权
    Circuit arrangement for transmitting measurement values on vehicle wheels 失效
    用于在车轮上传输测量值的电路装置

    公开(公告)号:US4891973A

    公开(公告)日:1990-01-09

    申请号:US221464

    申请日:1988-06-09

    摘要: A circuit arrangement for transmitting variable measurement values, such as pressure and temperature, at vehicle wheels is provided which transmits the measurement values in the form of H-F signals to a stationary evaluating circuit (12) with great accuracy, high reliability and in short time intervals. A repeater coil (b 13), which is connected with the latter, arranged in the vicinity of the wheel so as to be stationary and connected to voltage by a square-wave generator (15), cooperates with a revolving repeated coil (19) which is fastened at the vehicle wheel and connected with a sensor circuit arrangement (20) supplied by it. The sensor circuit arrangement (20) contains a timing element (29) which responds to a voltage peak in the revolving repeater coil (19 l) at the end of a voltage pulse of the square-wave generator (15) and, with a corresponding delay, triggers a timing circuit (30) for transmitting the measurement values, which timing circuit (30) is connected with it on the output side, wherein the delay time of the timing element (29), together with the duty cycle of the timing circuit (30), is shorter than the pause time of the square-wave voltage at the square-wave generator (15).

    摘要翻译: PCT No.PCT / DE86 / 00523 Sec。 371日期:1988年6月9日 102(e)日期1988年6月9日PCT提交1986年12月24日PCT公布。 公开号WO87 / 04123 日本1987年7月16日。提供一种用于在车轮上传输诸如压力和温度的可变测量值的电路装置,其以高精度信号将测量值以HF信号的形式发送到静态评估电路(12) 高可靠性和短时间间隔。 与车轮相邻的中继器线圈(b 13)与方形波发生器(15)一起被固定并连接到电压,与旋转重复线圈(19)配合, 其被紧固在车轮上并且与由其提供的传感器电路装置(20)连接。 传感器电路装置(20)包含响应于方波发生器(15)的电压脉冲结束时的旋转中继器线圈(19l)中的电压峰值的定时元件(29),并且具有相应的 触发用于发送测量值的定时电路(30),该定时电路(30)在输出侧与其连接,其中定时元件(29)的延迟时间与定时的占空比 电路(30)比方波发生器(15)的方波电压的暂停时间短。