基于近场通讯的低功耗运输状态监测仪设计

The Design of a Low-power Transportation Status Monitor Based on Near Field Communication

摘要:

使用微控制器、MEMS传感器和近场通讯模块等部件设计了一款监测仪，用于监测和记录货物在运输过程中的加速度、温湿度等状态信息。其中加速度测量范围可达±16g，温湿度量程分别为-40～85 ℃和0～100% RH，同时在硬件型号选择和软件算法编写过程中，对系统功耗进行了充分优化，使得监测仪的待机时间超过60天。设备使用近场通讯方式与移动端进行无线数据交互，移动端通过配套的应用程序能够实现对监测仪的控制和对记录数据的操作。试验结果表明，监测仪能够准确、完整的对货物运输过程中出现的“超限事件”进行记录，可广泛应用于物流、运输等行业。

Abstract:

Designed a monitor which is composed of microcontroller, MEMS sensors and Near Field Communication (NFC) module to supervise and record the transportation status parameters, such as acceleration, temperature and humidity. The measurement range of acceleration could reach ±16g, and the range of temperature and humidity are -40～85 ℃ and 0～100% RH, respectively. Meanwhile, the system power consumption has been fully optimized during the hardware model selection and software algorithm program, which makes the device’s standby time beyond 60 days. This monitor exchanges data with mobile terminal via NFC, suggesting mobile terminal can control the monitor and manipulate the data recording by means of the corresponding application program. Test results verify that the monitor records the “over-limit events” precisely and completely during the transportation, which could be widely used in logistics and transportation industries.