| 摘要 |
PURPOSE: A wireless light emitting position control type level staff apparatus for measuring an underground space is provided to reduce measurement setting time by enabling a worker to power LEDs on a desired scale mark without an assistant. CONSTITUTION: A wireless light emitting position control type level staff apparatus for measuring an underground space comprises a Zigbee remote controller(100) for measurement and a wireless light emitting position control type level staff(200). The Zigbee remote controller is connected to the level staff installed in one side of an underground space through Zigbee communication and sends a signal for powering LEDs on a desired scale mark. The height of the level staff can be adjusted. The level staff powers the LEDs on the desired scale mark and sets a reference level of a measurement device.
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