Method and device for regulating and controlling dynamic comfortable wind of fan in sleep state based on heart rate

Abstract

The invention discloses a method and device for regulating and controlling dynamic comfortable wind of a fan in a sleep state based on heart rate. The device mainly comprises the fan, an environmentalparameter acquisition module, a heart rate acquisition module, a metabolic rate calculation module, a processing module, a control module, a wind speed regulation module and a single chip microcomputer. The method mainly comprises the following steps that (1) the environmental parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan; (2) the metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of a user; (3) a standard effective temperature signal is calculated; (4) the control module generates a sine wave function signal based on a preset wind speed fluctuation period T, a reference wind speed V0, an upper wind speed limit Vmax and a lower wind speed limit Vmin and feeds the sine wave function signal back to the wind speed regulation module; and (5) the wind speed regulation module regulates the wind speed of the fan based on sine wave function, a maximum wind speed regulation signal or a minimum wind speed regulation signal. According to the method and device, the condition that sleeping quality is influenced due to the fact that an user wakesup under constant airflow caused by cold or hot is prevented.

Description

technical field [0001] The invention relates to the field of fan regulation, in particular to a method and device for dynamically controlling a fan's comfortable wind in a sleep state based on heart rate. Background technique [0002] The summer in the Yangtze River Basin in my country is hot and long, and air conditioners are widely used as the main equipment to improve the indoor environment. However, long-term use of air conditioners not only increases the energy consumption of building air conditioners in our country, but also puts huge pressure on my country's energy consumption demand. At the same time, a large number of facts show that the human body's thermal adaptability will be weakened when living in an air-conditioned environment for a long time. It leads to the decline of human body temperature regulation function and the decline of disease resistance, and "sick building syndrome" appears. [0003] Sleep occupies one-third of a person's life, and the quality of ...

AI Technical Summary

Problems solved by technology

[0005] There are mainly the following problems in the use of fans during sleep: first, when people use fans during sleep, they usually turn on the fan at a suitable gear before going to bed, but as the sleep deepens, the heat produced by the human body decreases, which affects the wind speed. Second, as the outdoor temperature decreases at night, the temperature in the room also decreases, but after the sun rises in the morning, as the outdoor temperature rises, the indoor temperature also decreases. From this point of view, there is a V-shaped change in the indoor temperature during sleep, but if the wind speed remains constant, it cannot meet the thermal comfort needs of the human body; third, many fans on the market have sleep wind mode, but the existing sleep wind mode is a deformation of the natural wind mode, and the fan speed cannot be changed according to the physiological parameters of the human body and the indoor temperature during sleep.

However, affected by individual differences, the preset sleep duration and calculated metabolic rate changes cannot accurately reflect the user's needs during sleep

It is inevitable that the wind speed will be too high or too low, which will affect sleep

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