Proposal of a Method to Automatically Identify a Sensor as Energy Conversion or Energy Control

Abstract

There are three output types of sensors, which represent a voltage output type sensor, a current output type sensor, and a resistance change type sensor. If the output type is different, the detection circuit is also different. In the previous study, one unique analog detection circuit that can measure the output of different sensors has been proposed. However, the circuit had a switch and had to be switched manually. Therefore, the user needed to know in advance what type of output the sensor had. In this study, the switch is automatically switched according to the sensor type. We classify sensors into energy conversion type (voltage output type and current output type) and energy control type (resistance change type), and propose a method to automatically identify them. Using three types of sensors, we experimentally investigated whether they could be identified correctly. As a result, it became clear that any sensor can be automatically identified. For this reason, we do not need to know the type of sensor in advance. The switch is automatically switched according to the type of sensor. This makes it possible to operate the sensor correctly simply by connecting the sensor to one circuit.