Abstract: This paper studies the design and application of OTA (Over the Air Technology) in intelligent refrigerator with networking function. When the software development is completed, uploading the firmware version to the cloud server and regularly check and automatically upgrade the firmware version of the refrigerator through the electronic control board and Wi-Fi module, so as to make the running firmware version of the refrigerator remotely controlled. In the production process, refrigerators of different models can automatically download the corresponding electronic control software through the local server and the related module and then complete the upgrade and detection, because of this we can get high universality of the electronic control board at the manufacturing end and greatly improve the production efficiency. Meanwhile, based on OTA, the push of new technology on the sold machine can be realized, so that the new control technology of refrigerator can be continuously iterated on the stock machine, which improves the user stickiness of smart refrigerator and can create profits sustainably.

Key words: Intelligent refrigerator, Wi-Fi, OTA, Manufacturing universality, New function pushes