| Title |
Design of Inner Section Displacement Measurement System Using Multiple Node Networks |
| Authors |
Suhk-Hoon Suh ; Kwang-Joon Woo |
| Abstract |
In this paper, we design tunnel inner section displacement measurement system which is composed of potentiometer-type displacement sensors, microcontroller-based intelligent sensing head, and host computer for the management system and acquisition data. Multiple node communication bus connects the intelligent sensing heads with the host computer. For safe and reliable network operation, we use daisy-chain configuration, termination resistor, fail-safe biasing circuit. For the enhancement of system utilization, we use modbus protocol. The acquisition data are transmitted to host computer and managed by database. Several data request conditions and sorting conditions are provided by management software. The utilization of designed system is confirmed by experiment. |