| 摘要 |
A detector comprises a pyroelectric detector, a temperature control mechanism including a thermoelectric heating/cooling element for keeping the temperature of the pyroelectric detector constant, a temperature sensor, and a temperature controller responsive to the detection signal from the temperature sensor for controlling power supply to the thermoelectric heating/cooling element, and control unit provided within the temperature controller for starting and shutting off the power supply to the thermoelectric heating/cooling element only except for collecting data from the pyroelectric detector.
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