基于加速度传感器的低功耗居家用水行为检测装置

Low Power Domestic Water Detection Device Based on Aacceleration Sensor

设计了一种可以检测居家用水行为的低功耗装置。系统由ADXL362加速度传感器单元、MSP430FR6989低功耗微控制器单元、CC2530 ZigBee自组网单元等组成。可以通过采集水管的震动信号判断水管中是否有水流流过,并通过ZigBee将水流状态上传到后台。提出了一种三级休眠机制,大大降低了系统的功耗。同时采用阈值自适应设定的方法,增强了检测装置的适应性。测试结果表明,该装置可以有效检测居家用水行为。

A low power device is designed to detect domestic water consumption behavior.The system is composed of ADXL362 acceleration sensor unit,MSP430FR6989 low power microcontroller unit,CC2530 ZigBee Ad-Hoc network unit and so on.The vibration signal from the pipe can be used to detect whether there is water flowing through the pipe and the flowing condition can be uploaded to background through ZigBee.A three-level sleeping mechanism is applied to dramatically decrease the power consumption of the system.Adaptive threshold setting method is adopted to add the adaptation of the detector.Results of the tests show that domestic water behavior can be detected effectively.