With the increasing popularity of smart home devices, many water purifier control panels have network connection functions to achieve remote control and intelligent operation. However, network failures occur from time to time, and it is particularly important to ensure local control functions.
First, the hardware design of the water purifier control panel should be independent and stable. Even when the network module fails, its core microcontroller and the circuits connected to the key components inside the water purifier should continue to work normally. For example, an independent power management chip is used to ensure that when the network chip power supply is abnormal, it can still provide stable power support for the circuits required for local control. At the same time, the communication line between the water purifier control panel and the water purifier host should be designed with redundancy or backup mechanisms, such as interfaces with both wired and wireless connections (such as Bluetooth). When the network connection failure causes the wireless communication to fail, it can automatically switch to a wired connection to ensure the transmission of basic control instructions and realize local operations of basic functions such as water purifier power on and off and filter flushing.
Secondly, the software system of the water purifier control panel should be optimized. When writing a program, the local control function module should be effectively isolated from the network control function module so that it can run independently. When a network failure is detected, the software can quickly switch to the local control mode and give priority to responding to local key operation instructions. For example, set up a network monitoring thread to check the network connection status in real time. Once the network is interrupted, immediately lock the network-related function module and activate the local control interface, so that users can operate common functions such as water temperature adjustment and water volume selection without obstacles, and there will be no jamming or errors due to network problems during operation.
Furthermore, in the user interface design, it is necessary to clearly distinguish between network control and local control status. When the network is normal, the complete intelligent control interface is displayed, including remote appointment, water quality data analysis and other functions; when the network fails, it automatically switches to a simplified local control interface, highlighting key function buttons such as water production, water production stop, and water extraction, so that users can operate quickly. At the same time, the user can be informed that the local control state is currently in the state through the indicator light or screen prompt information to avoid confusion or misoperation of the user due to interface changes. For example, the words "local control" are displayed in a striking yellow icon at the top of the screen, and the corresponding local control buttons are increased in size or changed in color to improve recognition.
Finally, the security of the local control function must also be guaranteed. In the event of a network failure, although the remote control function is limited, illegal local operations must still be prevented. Password protection or physical key lock functions can be set, and local control can only be performed after the user enters the correct password or performs a specific unlocking operation. This can not only ensure that users can use the local control function normally when the network fails, but also prevent others from maliciously operating the water purifier, ensuring the safety of household water use.
