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This paper presents the detailed design, working principle and testing of a thermally independent irradiation solar sensor. The sensor is based on a photoelectric cell, and incorporates a sensor circuit which assures proper short circuit conditions and accomplishes temperature compensation as well. Our sensor sensitivity is 3 mV/W/m2 and resolution is 0.5 W/m2. Mean error of the compensated output...
We present a dual axis accelerometer made with a frontside bulk micromachining on a 0.35 μm CMOS. The accelerometer is based on thermal convection where a central heater creates a hot gas bubble. Acceleration applied to the body will change the temperature distribution on the device, the latter being measured by four detectors containing six serially connected thermocouples. The paper will present...
The purpose of this paper is to propose two types of airflow velocity measurement modules, double-chip and single-chip, of MEMS-based flow sensors that consisting of heating resistors and sensing resistors on alumina films. In this study, MEMS techniques are used to deposit a platinum layer on the substrate to form resistors which is to regard as heater and sensing elements. As air flows through the...
We evaluate an availability of a method for detecting chickens infected with the highly pathogenic avian influenza (HPAI) viruses at the early stage in poultry farms using a wireless sensor node with temperature sensor and accelerometer. Chicken infection experiments by using the developed prototype wireless sensor node showed that weakness and fever of the infected chickens would be the early signal...
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