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    • 6. 发明授权
    • Communications system for vehicle wheel alignment apparatus
    • 车轮定位装置通信系统
    • US5937365A
    • 1999-08-10
    • US111720
    • 1993-08-25
    • Gerald E. FritonThomas A. Meyer
    • Gerald E. FritonThomas A. Meyer
    • G01B21/26G01B5/255
    • G01B21/26
    • Communication system for vehicle wheel alignment apparatus includes transceivers for each wheel sensor and a plurality of transceivers disposed at a control console or control remote unit. Communication is accomplished with any particular sensor transceiver by switching among the control transceivers as follows: (1) If the sensor transceiver does not respond, switch the transmitter portions of the control transceivers sequentially until the sensor transceiver does respond, and (2) if the signal from the sensor transceiver is garbled, switch the receiver portions of the control transceivers sequentially until the message is ungarbled. The transmitter and receiver portions of the control transceivers are controlled independently, so that for a particular message transmission may use a first control transceiver and reception may use a second control transceiver. The communication between sensor transceivers and the control transceivers is cross-band, with all sensor transceivers using the same transmission frequency and a second, different reception frequency. Each transceiver uses the receiver mixer stage as the final, power amplification stage for the transmitter. Transmission is via an AM modulated FM subcarrier.
    • 用于车辆车轮定位装置的通信系统包括用于每个车轮传感器的收发器和设置在控制台或控制远程单元处的多个收发器。 通过以下方式在控制收发器之间进行切换来实现通信:(1)如果传感器收发器不响应,则依次切换控制收发器的发射机部分,直到传感器收发器响应为止,以及(2)如果 来自传感器收发器的信号发生乱码,顺序切换控制收发器的接收器部分,直到消息未被加载。 控制收发器的发射器和接收器部分被独立地控制,使得对于特定的消息传输可以使用第一控制收发器并且接收可以使用第二控制收发器。 传感器收发器和控制收发器之间的通信是跨频带的,所有传感器收发器使用相同的传输频率和第二个不同的接收频率。 每个收发器使用接收机混频器级作为发射机的最终功率放大级。 传输是通过AM调制的FM副载波。