Hari Arief Dharmawan
This paper explains a design of spatial temperature measurement using some sensors that were connected using a small network. The sensors were intended to be placed on the ground and few meters below the ground level. The sensor placement in this way can be applied to perform ground temperature measurement at various depths. The network contained some DS18S20s as digital temperature sensors, 1-wire buses, a Controller Area Network (CAN) bus, and some controllers implementing AT90CAN128s. Each sensor was placed in a pipe made of steel with two 1-wire connectors placed in it. The measurements located at some points on the ground and below the ground level were firstly done by reading the sensors through the 1-wire buses and then forwarding the data to a central controller using the CAN bus. This central controller was connected to a computer containing monitoring software using a serial communication link. Some experiments were done by reading temperatures in a laboratory and a field using the designed network. Results of these experiments showed that the network of temperature measurement could work as expected. The use of the 1-wire and CAN buses provided easiness during the installation of cables, sensors and devices in the network. In addition, the use of the cables could be minimized as only 3 wires were needed for sensor connections and two wires for controller connections. © 2016 IEEE.
Department of Physics, Brawijaya University, Malang, Indonesia
