| 摘要 |
PURPOSE: A displacement sensor is provided to enable the underground displacement to be accurately measured, to enable the direction of stress to be recognized and to enable storage and installed to be easily made. CONSTITUTION: A displacement sensor comprises a transmission unit, a sensor block(200) and a sensor unit. The transmission unit comprises an A/D converter(113), an amplifier(115) and a MICOM. If the transmission unit is installed on the sensor block, one or more sensor units are projected to one side of the sensor block. If external force is applied, the external force is sensed by one or more sensors(350). The transmission unit is connected through a communications cable(111). The transmission unit is consecutively connected to a socket and a terminal, which are installed on both ends of the communications cable to face each other.
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