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基于STM32的超市冷鏈監控報警系統設計
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東華大學(xué) 機械工程學(xué)院,東華大學(xué) 機械工程學(xué)院

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Design of Supermarket's Cold Chain Monitoring Alarm System Based on STM32
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College of Mechanical Engineering,Donghua University,College of Mechanical Engineering,Donghua University

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    摘要:

    為遠程查看超市冷鏈的多路壓力和電能表數據,并在冷鏈系統出現異常時(shí)能及時(shí)采取措施,設計了一種基于STM32的超市冷鏈監控報警系統。該系統通過(guò)壓力采集電路將壓力信號轉變?yōu)殡妷盒盘?利用STM32單片機的ADC采集電壓信號;通過(guò)RS485總線(xiàn)實(shí)現4路電能表數據的采集;通過(guò)繼電器對現場(chǎng)設備的開(kāi)關(guān)進(jìn)行控制。STM32通過(guò)相關(guān)算法對采集到的數據進(jìn)行處理,將結果顯示在現場(chǎng)的TFTLCD顯示器,方便現場(chǎng)工作人員的觀(guān)察。GPRS模塊將采集到的數據傳送給上位機,使用戶(hù)能夠遠程查看現場(chǎng)數據。數據異常時(shí),用戶(hù)可以收到報警短信,并通過(guò)回復短信對現場(chǎng)設備進(jìn)行控制。實(shí)驗表明,該系統測量準確,反應迅速,具有較強的實(shí)時(shí)性,且成本較低,有效減少了抄表人員的工作量,確保超市冷鏈系統的安全運行。

    Abstract:

    In order to view the multi-channel pressure and Watt-hour meter's data of a supermarket's cold chain remotely and take measures in time when the cold chain system is abnormal, a monitoring alarm system for supermarket's cold chain based on STM32 was designed. The system converted the pressure signal into voltage signal through the pressure acquisition circuit, and the voltage signal was collected by the ADC of the STM32 microcontroller; and the data of the 4 Watt-hour meter's data was collected by the RS485 bus.,besides the system controlled the switch of field equipment by relay. STM32 microcontroller dealt with the collected data through the relevant algorithm and the results would be shown on the TFTLCD monitor at the scene, which was convenient to observe for field staff. The GPRS module transmitted the collected data to the host computer, which enabled users to view field data remotely. When the data was abnormal, the user would receive alarm messages and could control the field device by replying to the messages. Experiments showed that the system measured accurately and responded quickly and had better real-time performance, besides the system had advantage of low cost and reduced the workload of meter readers effectively, which ensured the safe operation of supermarket's cold chain system.

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高 奎,李慧敏.基于STM32的超市冷鏈監控報警系統設計計算機測量與控制[J].,2018,26(5):93-96.

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  • 收稿日期:2017-08-22
  • 最后修改日期:2017-09-27
  • 錄用日期:2017-09-28
  • 在線(xiàn)發(fā)布日期: 2018-05-22
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