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Measurement system

  • US 10,139,431 B2
  • Filed: 05/08/2013
  • Issued: 11/27/2018
  • Est. Priority Date: 05/18/2012
  • Status: Active Grant
First Claim
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1. A measurement system comprising:

  • a sensor amplifier connected to a sensor configured to output an analog signal corresponding to a measured physical quantity and a main terminal paired with the sensor amplifier, the sensor amplifier comprising;

    a first sensor-amplifier wireless transceiver;

    a second sensor-amplifier wireless transceiver having a power consumption less than that of the first sensor-amplifier wireless transceiver;

    a state-control processor configured to;

    shift the first sensor-amplifier wireless transceiver from an operating state to a suspended state and to maintain the operating state of the second sensor-amplifier wireless transceiver upon receiving an instruction from the main terminal to shift to a low-power-consumption mode, wherein the low-power consumption mode includes a first low-power consumption mode and a second low-power consumption mode with a power consumption less than that of the first low-power consumption mode; and

    shift the first sensor-amplifier wireless transceiver from the suspended state to the operating state upon receiving an instruction from the main terminal to shift to a normal power mode;

    a sensor-amplifier processor configured to control a measurement state of the sensor and the state-control processor has a power consumption less than that of the sensor-amplifier processor; and

    the main terminal comprising;

    a first main-terminal wireless transceiver paired with the first sensor-amplifier wireless transceiver to communicate therewith;

    a second main-terminal wireless transceiver having a power consumption less than that of the first main terminal wireless transceiver and paired with the second sensor-amplifier wireless transceiver to communicate therewith; and

    a main-terminal processor configured to;

    transmit an instruction to shift to the low-power-consumption mode to the sensor amplifier via the first main-terminal wireless transceiver or the second main-terminal wireless transceiver;

    transmit an instruction to shift from the low-power consumption mode to the normal power mode to the sensor amplifier via the second main-terminal wireless transceiver;

    transmit an instruction to shift to the first low-power consumption mode to the sensor amplifier via the first main terminal wireless transceiver or the second main terminal wireless transceiver;

    transmit an instruction to shift to the second low-power consumption mode to the sensor amplifier via the first main terminal wireless transceiver or the second main terminal wireless transceiver;

    shift the first sensor-amplifier wireless transceiver from an operating state to a suspended state upon receiving an instruction from the main terminal to shift to the first low-power-consumption mode; and

    shift the sensor-amplifier processor and the first sensor-amplifier wireless transceiver from the operating state to the suspended state upon receiving an instruction from the main terminal to shift to the second low-power consumption mode.

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