Abstract
Power well cover monitoring system (PWC-MS) based on the embedded microprocessor ARM Cortex-M3 with FreeRTOS is proposed in this paper. The software functions of the terminal are divided into four tasks, namely, watchdog refresh and flag monitoring task, system status light task, non-debug sensor mode task, and debug sensor mode task. The priority levels of tasks depend on real-time requirement. The temperature and humidity sensor RS-WS-N01-2-2 and the dual-axis tilt sensor ADXL345 are adopted in the terminal and the sampling data is sent to the IoT (Internet of Things) platform via the NB-IoT communication module BC35-G. The software of application layer in the IoT platform is developed based on the Spring Cloud and database technology with Java language. User can get the real-time data through the Web page. Experiments show that the PWC-MS works well and the real-time alarm can be realized immediately.
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