公开(公告)号：US4064482A

公开(公告)日：1977-12-20

申请号：US732788

申请日：1976-10-15

申请人： Wolfgang Maisch ,  Rainer Burkel ,  Jean Pierre Leroy ,  Andre Bonin

发明人： Wolfgang Maisch ,  Rainer Burkel ,  Jean Pierre Leroy ,  Andre Bonin

IPC分类号： B60C23/04 ,  B60C23/02

CPC分类号： B60C23/0408

摘要： The wheels at opposite ends of an axle - and which may be twin or tandem wheels -- each have a pressure switch and a tank circuit associated therewith, rotating with the wheel. The tank circuits includes a normally closed pressure-sensitive switch which, when the pressure in the respective tire drops below a certain value, opens the tank circuit. The coil of the tank circuit is coupled with a transducer coil connected to a blocking oscillator which, upon passage of the tank circuit, provides an output pulse. The frequency or recurrence rate of the output pulses from opposite ends of the wheels at an axle are compared in an integrating comparator and, if the frequencies differ after a predetermined integration time, provide an alarm signal. The integrator or a digital counter which should have a number of count stages, only the last one providing an alarm signal to allow for variation in frequency with normal tire pressure when the vehicle rounds a curve. Tandem or multiple wheels at one end of the axle each can be provided with a tank circuit, offset 90.degree. with respect to each other, however. Use of tandem wheels increases the absolute frequency and does not change the comparison system.

摘要翻译： 在车轴的相对端处的车轮 - 可以是双列或双列车轮 - 每个车轮都具有压力开关和与其相关联的油箱回路，与车轮一起旋转。 油箱回路包括一个常闭压力开关，当各轮胎的压力下降到一定值以下时，打开油箱回路。 油箱回路的线圈与连接到阻塞振荡器的换能器线圈耦合，该阻塞振荡器在储能电路通过时提供输出脉冲。 在积分比较器中比较来自车轴相对端的输出脉冲的频率或再现速率，如果频率在预定积分时间之后不同，则提供报警信号。 积分器或数字计数器应该具有多个计数级，只有最后一个提供报警信号，以允许当车辆绕曲线时具有正常轮胎压力的频率变化。 然而，在轴的一端的串联或多个轮子可以设置有相对于彼此偏移90°的油箱回路。 串联轮的使用增加了绝对频率，不会改变比较系统。