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热词
    • 70. 发明公开
    • Transponder system for the remote communication of a physical condition
    • 转发器系统zurFernübertragungeines physikalischen Zustandes
    • EP0744627A1
    • 1996-11-27
    • EP96303568.8
    • 1996-05-20
    • Palomar Technologies Corporation
    • Lowe, Peter R.
    • G01S13/02
    • G06K19/07764G01S13/758G06K7/0008G06K19/0723G06K19/07749G08C17/02
    • A transponder communicates information on a physical condition to a remote location, without the need for a local power supply or any wire or optical communications with the remote location, by detecting the physical condition and encoding information on the condition into a reprogrammable portion of the transponder memory for transmission in response to an interrogation signal. The encoder is preferably formed from an oscillator that provides an output signal whose frequency is a function of the information provided by the detector, and a counter that accumulates a count which is a function of the oscillator frequency, with the counter programming the memory in accordance with its accumulated count. A variable capacitor, resistor or inductor is preferably used to detect the physical condition and vary the oscillator's output frequency. A bubble wrap-type variable capacitor is particularly useful for monitoring the quantity of air within a tire.
    • 应答器通过检测物理条件并将条件信息编码到应答器的可再编程部分中,将物理状况信息传送到远程位置,而不需要本地电源或与远程位置的任何有线或光通信 用于响应于询问信号的传输的存储器。 编码器优选地由提供输出信号的振荡器形成,该输出信号的频率是由检测器提供的信息的函数,以及计数器,累加作为振荡器频率的函数的计数,计数器根据存储器编程 累计计数。 可变电容器,电阻器或电感器优选地用于检测物理条件并改变振荡器的输出频率。 气泡包装型可变电容器特别适用于监测轮胎内的空气量。