Water heater and control method thereof

Abstract

The invention discloses a water heater which comprises a controller, an interface and a WIFI (Wireless Fidelity) module, wherein the controller at least comprises a sending pin, a receiving pin, an enabling pin, a power supply pin and a grounding pin; the WIFI module comprises a power supply end, a grounding end, a data sending end and a data receiving end; the data sending end is connected with the receiving pin by a first end of the interface; the data receiving end is connected with the sending pin by a second end of the interface; the grounding end is grounded by a third end of the interface; the power supply end is connected with the enabling pin by a fourth end of the interface; the WIFI module sends heartbeat data packets to the controller at intervals of preset time; the controller judges whether the heartbeat data packets are received and outputs a control signal to control the WIFI module to be reset by the enabling pin if the heartbeat data packets are not received. According to the invention, power supply of the WIFI module is controlled by the enabling pin of the controller, so that under the condition that the WIFI module is crashed, the WIFI module can be controlled to be reset. The invention also discloses a control method of the water heater.

Description

technical field [0001] The invention relates to the technical field of kitchen and bathroom appliances, in particular to a water heater and a control method thereof. Background technique [0002] At present, generally, the interface connection mode between the main control chip of the water heater and the WIFI module is a 4-core connection, which are respectively power supply, ground, sending data line, and receiving data line. like figure 1 As shown, among them, TXD is the sending data line, RXD is the receiving data line, and 5V is the power supply. That is to say, the power supply of the WIFI module is synchronized with that of the main control chip. If the main control chip has power, the WIFI module has power. [0003] Generally speaking, the WIFI module board uses an ARM chip and a wireless transmission module, and a small operating system usually runs inside the ARM chip. The disadvantage of the existing connection method is: once the WIFI module fails in the norma...

AI Technical Summary

Problems solved by technology

The disadvantage of the existing connection method is: once the WIFI module fails in the normal operation of the wireless transmission module or the software bug occurs in the operating system, it will cause the WIFI module to operate abnormally, but this situation cannot be self-recovered, which also leads to The entire module cannot continue to be used

However, if the above interface method is used, the WIFI module cannot be restarted

In other words, once there is a problem with the WIFI module, the entire link will be broken, and the user will have no way to use the WIFI function of the water heater.

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