A Wide Range and High Accuracy Sensor Interface with Switching Regulator for Coin-Cell Powered Tiny Wireless Sensor Node

Tatehora, Kohei; Shiiki, Yohsuke; Nakagawa, Shuya; Tanaka, T.; Uchida, Ken; Ishikuro, Hiroki

doi:10.1109/iscas45731.2020.9180618

Cited by 2 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although low power consumption design by the SMPS is a circuit technology that is already developed and employed to supply power to the bridge, (21) it is the first time to employ it in the control circuit for the thermal wind sensor, which needs the dynamic output of a DC/DC converter to control the dynamic supply voltage of the bridge under different balanced conditions for a constant overtemperature. This is meaningful and useful to other low-power-consumption research studies on the closed-loop circuit with the bridge for dynamic control under balanced conditions.…”

Section: Introductionmentioning

confidence: 99%

Low-power-consumption Circuit for MEMS Thermal Wind Sensors Operated in Constant-temperature-difference Mode

Luo¹,

Qin²,

Huang³

2023

Sensors and Materials

View full text Add to dashboard Cite

In this paper, the traditional control circuit of the constant-temperature-difference (CTD) mode for a MEMS thermal wind sensor is introduced and analyzed. Then, it is demonstrated that the transistor in this closed-loop control circuit has high power consumption owing to its use as a modulator with low conversion efficiency to supply a high current for the Wheatstone bridge. To reduce unnecessary power consumption, the use of a DC/DC converter with high conversion efficiency in the switching mode power supply is proposed to replace the transistor in a new lowpower-consumption control circuit of the CTD mode. Then the loop stability and the performance of the new control circuit in reducing the power consumption are verified by simulation. Finally, power-consumption experiments are performed on the traditional and new control circuits in a laminar flow wind tunnel. The experimental results show the capability of the new low-powerconsumption control circuit to reduce the total power consumption of the control circuit by 20 to 40% at wind speeds from 0 to 30 m/s by replacing the transistor with the DC/DC converter.

show abstract

Section: Introductionmentioning

confidence: 99%