基于WiFi网络的成套商用冰箱智能控制器研究

针对目前大型酒店及超市在使用商用冰箱过程中,存在的食品保鲜效果差、存储状况糟、调度管理不便等问题,设计提出了一款面向成套商用冰箱,且带条码录入功能的网络变频冰箱控制器。该系统采用了DsPIC30f5013芯片作为主控制器,通过自动条码扫描模块获取食品相关信息,并利用串口转WiFi模块解决多台冰箱的组网问题。通过对三相端电压进行采样,确定了反电动势过零点,实现了压缩机的准确换相。同时,为提高控制器的性能,软件上还采取了变频模糊控制方法、故障自诊断和提醒功能等设计。研究结果表明该控制系统具备有效性,且具有较大的推广价值。

Complete sets of commercial refrigerators control system based on wireless network WiFi

Aiming at the shortcomings of commercial refrigerators used in large hotels and supermarkets recently, such as poor effect of fresh- keeping, bad food storage condition, dispatching management inconvenience, and so on, a new designed variable-frequency controller with barcode input function was proposed for complete commercial refrigerators. The controller was designed based on the DsPIC30fS013 chip, food information was obtained through an automatic barcode scanning module, a serial port to WiFi module was used for the problem of refrig- erators networking. The terminal voltage waveform was analyzed to confirm the zero-crossing point and the accurate commutations were a- chieved. To improve the controller performance, the frequency conversion method of fuzzy control, fault self-diagnosis and remind function were also presented in the software. The results indicate that the control system is effective and it has a great value of popularization.