THE PRECEDING SUBSIDENCE MEASUREMENT SYSTEM AHEAD OF TUNNEL FACE USING A WIRELESS AUTOMATIC SYSTEM

摘要

A preceding settlement measurement device for a blind front of a tunnel using a wireless automation system is provided to transmit data wirelessly using a multiplexer. A preceding settlement measurement device for a blind front of a tunnel using a wireless automation system comprises a guide casing(120), a measure unit(150), a multiplexer(200), an RF relay(250), and a master data logger(300). An RF data storage unit(160) and the measure unit are formed at the guide casing into one body. The multiplexer transmits a measurement signal which requests the measure unit for the information about preceding settlement for the blind front of the tunnel. An RF module is built in the multiplexer. The multiplexer has the RF relay. The RF module receives the information about the preceding settlement for the blind front of the tunnel and outputs. The RF relay relays the information. The master data logger is installed outside the tunnel.