Deng Xintao, Sun Jinwei, Yang Fuyuan, Ouyang Minggao
School of Vehicle and Mobility, State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China.
Sensors (Basel). 2024 Feb 19;24(4):1332. doi: 10.3390/s24041332.
A compact wireless near-field hydrogen gas sensor is proposed, which detects leaking hydrogen near its source to achieve fast responses and high reliability. A semiconductor-type sensing element is implemented in the sensor, which can provide a significant response in 100 ms when stimulated by pure hydrogen. The overall response time is shortened by orders of magnitude compared to conventional sensors according to simulation results, which will be within 200 ms, compared with over 25 s for spatial concentration sensors under the worst conditions. Over 1 year maintenance intervals are enabled by wireless design based on the Bluetooth low energy protocol. The average energy consumption during a single alarm process is 153 μJ/s. The whole sensor is integrated on a 20 × 26 mm circuit board for compact use.
本文提出了一种紧凑型无线近场氢气传感器，该传感器可在氢气源附近检测泄漏的氢气，以实现快速响应和高可靠性。传感器中采用了半导体型传感元件，当受到纯氢气刺激时，该元件可在100毫秒内产生显著响应。根据模拟结果，与传统传感器相比，整体响应时间缩短了几个数量级，最坏情况下整体响应时间将在200毫秒以内，而空间浓度传感器在最坏情况下的响应时间超过25秒。基于低功耗蓝牙协议的无线设计使维护间隔超过1年。单次报警过程中的平均能耗为153微焦/秒。整个传感器集成在一块20×26毫米的电路板上，以实现紧凑使用。
