System and method for intelligently and automatically correcting temperature line of temperature control electric blanket

Abstract

The invention relates to a system and a method for intelligently and automatically correcting the temperature line of a temperature control electric blanket. The temperature line correction process of the system is automatically controlled and finished by MCU software and does not need manual regulation any more. The method comprises the following steps of: skillfully selecting a temperature reference point by adopting an accurate thermistor; acquiring the temperature signal of the accurate thermistor and the temperature signal of the temperature line; comparing the temperature signal of the accurate thermistor with the temperature signal of the temperature line to obtain a difference value; storing the difference value as a compensation signal in an E2PROM; automatically reading the compensation signal when the temperature line is used every time; and superimposing the compensation signal on the actual temperature of the temperature line so as to finish the automatic correction of the temperature line and fulfill the aim of ensuring the temperature control precision and the consistency of mass-produced products. The method breaks through the bottleneck of manual correction of electric blankets during the mass production, obviously improves the temperature control precision of the mass-produced products and greatly improves the production rate and daily output at the same time, and has the characteristics of intelligence, precision, convenience, and time and labor saving.

Description

technical field [0001] The invention relates to the technical field of electric heating blankets, in particular to an intelligent automatic correction system and method for temperature-sensing lines of a temperature-controlling electric heating blanket. Background technique [0002] In the temperature-controlled electric blanket, the temperature-sensing line plays an extremely important role. The feedback signal it provides serves as an important basis for whether to continue power output, such as figure 1 As shown, the temperature feedback signal provided by the temperature sensing line is compared with the temperature setting value. If the temperature setting value is not reached, the electric blanket controller will output power to drive the heating wire of the electric blanket to heat; if it has reached or exceeded The temperature setting value, the electric blanket controller stops driving the heating wire of the electric blanket for heating, and enters the heat preserv...

AI Technical Summary

Problems solved by technology

[0003] When the temperature-sensitive line as a sensor is produced in large quantities, due to the influence of manufacturing deviation and ambient temperature, there is an error of tens of degrees when the sensor leaves the factory

If such a large error is not adjusted, the control accuracy and consistency of the system will be empty talk. Previous products mostly use the method of manually adjusting the variable resistor to calibrate the temperature sensing line. This method is time-consuming and laborious, and greatly reduces production efficiency. , and it is difficult to guarantee the accuracy of the correction

Therefore, the temperature-sensing line calibration operation when the product leaves the factory is a huge bottleneck for the large-scale promotion of intelligent, safe and environmentally friendly temperature-controlled electric blankets, which seriously hinders the popularization of such products.

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