Accurate Measurement Method of Ambient Temperature Based on Twice Voting Filter Algorithm

Abstract

The invention discloses a method for accurately measuring an ambient temperature based on twice voting filtering algorithm. An infrared window, an air conditioner control device and a processor are adopted in the method, wherein the infrared window is arranged on an air conditioner enclosure; the air conditioner control device and the processor are arranged inside an air conditioner; an optical lens is arranged behind the infrared window; and a thermal imaging sensor connected to the processor is arranged behind the optical lens. The method for accurately measuring the ambient temperature is adopted in the processor and comprises the following steps of: step (1). using the processor to read data f(x, y) output by the thermal imaging sensor; step (2). setting 10 ballot boxes, namely Box(i),wherein the corresponding temperature range is (i*5 DEG C, (i+1)*5 DEG C]; step (3). traversing all data of f(x, y), and voting for Box(i); step (4). searching for the maximum value of the ballot boxBox (i), wherein the corresponding serial number is imax; step (5). resetting 5 ballot boxes, namely Box 2 (j), wherein the corresponding temperature range is (imax*5+j) DEG C; step (6). traversing all the data of f(x, y), and voting for Box2(j); and step (7). searching for the maximum value of Box2(j), wherein the serial number is jmax, and obtaining the ambient temperature t being (imax*5+jmax)DEG C.

Description

technical field [0001] The invention relates to a method for accurately measuring ambient temperature based on a twice-voting filtering algorithm, and belongs to the technical field of home appliance control. Background technique [0002] Air conditioners are used to adjust the temperature in the room to provide a comfortable living environment. It has been more than 100 years since the air conditioner was produced. The development of refrigeration technology is very mature. From fixed frequency to variable frequency, the refrigeration efficiency has been improved a lot, but the measurement method of ambient temperature has not changed. Ambient temperature is an important parameter for the air conditioner. At present, the temperature measurement is to measure the temperature signal at the return air of the evaporator, and then compare it with the set temperature to automatically control the start and stop of the compressor to adjust the room temperature. This detection meth...

AI Technical Summary

Problems solved by technology

[0003] The temperature measurement method of the air conditioner can use the mature thermal imaging temperature measurement method, but the data output by the thermal imaging sensor is relatively large, which is the temperature distribution image of the environment, and it will be mixed with data from heat sources such as pets, human bodies, and incandescent lamps. How to obtain real ambient temperature data has become a topic

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