Intelligent and safe electric heating blanket and heating method thereof

Abstract

The invention relates to an intelligent and safe electric heating blanket which comprises a blanket body, a heating element composed of a nickel alloy low-voltage heating wire is arranged inside the blanket body, and a high-precision temperature sensor is set inside the heating element. The intelligent and safe electric heating blanket also comprises a control device with a MCU operation control unit, the regulation of the temperature range of 15 DEG C to 50 DEG C is achieved by controlling a MOS switch. The intelligent and safe electric heating blanket also comprises an isolation transformerDC power supply which outputs low-voltage direct current with the voltage lower than 24V. According to the invention, the hidden danger of the electric shock of a human body is fundamentally solved, the electromagnetic interference is completely eliminated, and the realization of the acquisition precision of +/-0.2 DEG C through an internal software algorithm is facilitated. The MCU operation control unit achieves the regulation of the temperature range of 15 DEG C to 50 DEG C by controlling the MOS switch, the control structure is simple, the loss is small, the response speed is fast. Vref can realize the instantaneous voltage rise to a safe voltage range, the heating power can be quickly increased, the reduction of a startup warm-up time is facilitated, and the acarus killing function isrealized.

Description

technical field [0001] The invention relates to the technical field of electric heating, in particular to an intelligent safety electric blanket and a heating method that can not only ensure the absolute safety of users, but also realize temperature control on the basis of meeting the temperature requirements of different regions of the human body. Background technique [0002] The common electric blanket is a kind of contact electric heating appliance. It weaves or sews the special soft cable electric heating element whose insulation performance reaches a certain safety standard into the blanket in the shape of a snake. When it is energized, it can generate appropriate heat. Some of the heat is balanced and constant, and some can be controlled and adjusted. [0003] Different electric blankets have their own outstanding features, for example, they are innovative in terms of power consumption, temperature regulation, ease of use, range of use, and durability. [0004] In vi...

AI Technical Summary

Problems solved by technology

[0008] The factors that lead to unsafe electric blankets mainly include: most electric blankets are charged with 220V city electricity and directly contact the human body, so there is a hidden danger of electric shock; at the same time, because the alternating current of the electric blanket device is easy to generate an alternating magnetic field, long-term use will be harmful to the human body. harmful to health;

[0009] On the basis of not having high safety performance, the factors that lead to the inability of the electric blanket to meet the needs of the human body include: due to the simple mechanical temperature control method, it cannot meet the needs of different user groups, the different needs of the human body for temperature throughout the night, and different use environments. At the same time, if the temperature control method of some existing low-voltage electric blanket products uses linear switches and other components, the loss will be large, and there are shortcomings such as slow response speed, low control precision, and poor human-computer interaction.

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