Abstract: Provided is a control method for de-icing blades of a wind power generator, including: Step S101: performing real-time monitoring of temperature of a surface of a blade of the wind power generator, and constructing a first positional temperature sequence at a time interval of v; and Step S102: calculating actual temperature at each position on the surface of the blade of the wind power generator according to the positional temperature sequence, and generating a second positional temperature sequence. In the present disclosure, it can be avoided that a discrepancy between the temperature acquired and the actual temperature of the surface of the wind power generator; and weight differences that may exist among three blades are taken into account, and synchronous de-icing operations are performed after eliminating the weight differences, so that ice treatment can be achieved without shutdown, and the stable operation of the wind power generator can be ensured.

Abstract: This application relates to the field of terminal technologies, and provides a Bluetooth communication method, a wearable device, and a system, to avoid always maintaining an HFP connection, so as to avoid an unnecessary delay or a call error caused when an electronic device processes a voice message. The Bluetooth communications system includes an electronic device and a wearable device, and an HFP connection is established between the electronic device and the wearable device. When the electronic device meets a preset condition, the HFP connection is automatically disconnected. The electronic device sends a first notification to the wearable device after receiving an incoming call, to reestablish the HFP connection. In this case, the electronic device may answer the incoming call by using the wearable device.

Abstract: This application relates to the field of terminal technologies, and provides a Bluetooth communication method, a wearable device, and a system, to avoid always maintaining an HFP connection, so as to avoid an unnecessary delay or a call error caused when an electronic device processes a voice message. The Bluetooth communications system includes an electronic device and a wearable device, and an HFP connection is established between the electronic device and the wearable device. When the electronic device meets a preset condition, the HFP connection is automatically disconnected. The electronic device sends a first notification to the wearable device after receiving an incoming call, to reestablish the HFP connection. In this case, the electronic device may answer the incoming call by using the wearable device.