Experimental method for acquiring pulse duty cycle of electric heating pad pulsed power-up

Abstract

The invention relates to an experimental method for acquiring a pulse duty cycle of electric heating pad pulsed power-up. The experimental method belongs to the technical field of electric heating control, and comprises the steps of: 1) deactivating or dismantling functions of measuring real-time temperature and performing fuse power-off of an existing electric blanket; 2) carrying out pulsed power-up on the existing electric blanket by means of pulse signal control with a plurality of different duty cycles; 3) measuring a plurality of temperature values reached after the existing electric blanket undergoes pulsed power-up; 4) finding out the highest temperature value among the plurality of temperature values, and determining and screening a safe highest temperature value according to experience; 5) finding out a pulse signal corresponding to the safe highest temperature value, and acquiring a duty cycle of the pulse signal. By adopting the experimental method, the duty cycles of the pulse signals corresponding to the highest temperatures which are relatively safe can be selected, and the pulse signals with the duty cycles are used for controlling pulsed power-up of the electric heating pad, thereby providing effective guarantee for the safety of the electric heating pad adopting pulsed power-up.

Description

Technical field [0001] The invention relates to an experimental method for obtaining the duty ratio of a pulse signal corresponding to an electric blanket or an electric heating pad when the pulse power-on reaches a safe maximum temperature, and belongs to the technical field of electric heating control. Background technique [0002] Pads or blankets for electric heating or physical therapy have been commonly used in people's daily life. This kind of electric heating sleeping pad is generally of constant temperature control type, and the control constant temperature value is set between 25 ℃ and 50 ℃. In this temperature range, the temperature sensor installed in the mat or blanket is used to sample the heating temperature in real time, and the sampled value is compared with the set temperature value to realize automatic temperature adjustment to achieve the purpose of constant temperature. This kind of temperature control is a commonly used method at present. Generally, a point...

AI Technical Summary

Problems solved by technology

However, a one-time thermal fuse can only collect the temperature of one point and cannot reflect the temperature of the entire mat, so the reliability is greatly reduced. If many disposable thermal fuses are installed in the mat, the reliability will of course be improved, but the production cost The height and the internal wiring become complicated, and it is difficult to realize in the process

Heating pads or blankets are bound to cause fires when NTC temperature sensors and / or fuses fail or are not set