Division of Engineering, New York University Abu Dhabi, Abu Dhabi 129188, United Arab Emirates.
System LSI Business, Samsung Electronics Co., Ltd., Hwaseong-si 18448, Korea.
Sensors (Basel). 2022 May 24;22(11):3965. doi: 10.3390/s22113965.
This paper presents a wireless kitchen fire prevention system that can detect and notify the fire risk caused by gas stoves. The proposed system consists of two modules. The sensor module detects the concentration of carbon dioxide (CO2) near the gas stove and transmits the monitoring results wirelessly. The alarm module, which is placed in other places, receives the data and reminds the user of the stove status. The sensor module uses a cost-efficient electrochemical CO2 sensor and embeds an in situ algorithm that determines the status of the gas stove based on the measured CO2 concentration. For the wireless communication between the modules, on-off keying (OOK) is employed, thereby achieving a longer battery lifetime of the alarm module, low cost, and simple implementation. To increase the lifetime further, a wake-up function based on passive infrared (PIR) sensing is employed in the alarm module. Our system can successfully detect the on state of the stove within 40 s and the off state within 200 s. Thanks to the low-power implementation, in situ algorithm, and wake-up function, the alarm module's expected battery lifetime is extended to about two months.
本文提出了一种能够检测和通知煤气灶引发火灾风险的无线厨房防火系统。该系统由两个模块组成。传感器模块检测煤气灶附近的二氧化碳（CO2）浓度，并无线传输监测结果。报警模块放置在其他地方，接收数据并提醒用户煤气灶的状态。传感器模块使用经济高效的电化学 CO2 传感器，并嵌入了一种基于测量的 CO2 浓度来确定煤气灶状态的原位算法。为了实现模块之间的无线通信，采用了开关键控（OOK），从而实现了报警模块更长的电池寿命、低成本和简单的实现。为了进一步延长寿命，在报警模块中采用了基于被动红外（PIR）感应的唤醒功能。我们的系统能够成功在 40 秒内检测到炉灶的开启状态，在 200 秒内检测到关闭状态。由于采用了低功耗实现、原位算法和唤醒功能，报警模块的预期电池寿命延长到了大约两个月。
