JPH035654A - Method for controlling air conditioner - Google Patents

Abstract

PURPOSE:To stabilize the control of indoor environment by computing the mean of the indoor temperature data consisting of indoor temperatures detected over N times combining N-1 times for preceding data and the current detection and by handling the thus obtained mean data as the temperature data obtained from the current detection. CONSTITUTION:Every time a control 5 reads a temperature data detected by an indoor temperature sensor 1, the preceding data in memory detected over N times are shifted; the mean of the temperature data comprising the preceding N-1 pieces of data and the currently detected data is handled as data for controlling the indoor temperature. Therefore, even if a currently detected temperature is an irregularly deviating value, such as one representing an instantaneous rise or fall, the data which controls a refrigeration cycle or a fan motor 4 is the mean of data obtained over N times, so that the control can be stabilized without causing erroneous performances, such as erroneous starting or stropping of the compressor 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method of controlling an air conditioner to create a comfortable indoor environment. The present invention relates to a method for controlling an air conditioner.

[Conventional example] Conventionally, in order to maintain a comfortable indoor environment, this type of air conditioner detects the indoor temperature, compares the detected temperature with a set temperature, and adjusts the compression based on the comparison result. We are trying to change the operating frequency of machines, etc.

In addition, microcomputers (CPUs) have come to be used as control units for controlling the compressors, etc., such as A
In the case of a microcomputer equipped with a /D conversion input port, the detection signal from the indoor temperature sensor is directly input. Therefore, the number of times the indoor temperature can be detected can be increased, making it possible to detect subtle changes in indoor temperature.

[Problems to be Solved by the Invention] By the way, in the above method for controlling an air conditioner, indoor air is fluid, and changes in the indoor environment and conditions,
For example, opening and closing doors and windows can cause the indoor temperature to rise or fall rapidly. In such a case, for example, as shown at points A and B in FIG. 4, the indoor temperature sensor may detect an instantaneous rise or fall in temperature.

Then, the microcomputer performs operations based on the temperature data that has increased or decreased, such as starting or stopping a compressor even though the temperature is not the normal temperature. There was a problem with the movement.

This invention was made in view of the above problems.

The purpose is to provide a control method for an air conditioner that prevents malfunctions caused by the instantaneous rise or fall in room temperature and enables stable control.

[Means for Solving the Problem] In order to achieve the above object, the present invention compares the temperature detected by the indoor temperature sensor and the set temperature when controlling the indoor temperature, and controls the compressor etc. based on the comparison result. In the above method for controlling an air conditioner to maintain a predetermined temperature in a room,
N pieces of data of the detected temperature are stored, and when the indoor temperature is detected by the indoor temperature sensor, the stored N pieces of data are stored.
At the same time, the current detected temperature data and N-1 data resulting from the shift are made N times of data, and the N times of data are averaged to obtain the above detected temperature. The summary is that

[Function] Since the above method is used, when controlling the indoor temperature,
N pieces of data consisting of data of the current detected temperature by the indoor temperature sensor and N-1 pieces of data detected up to the previous time are averaged, and this average value is regarded as the currently detected temperature.

Therefore, for example, even if the current detected temperature becomes an extremely high or low value due to indoor conditions, etc., the data based on that high or low value will not be treated as the data for the temperature control described above, and the control data will be the average value described above. [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings.

In FIG. 1, this air conditioner includes sensors such as an indoor temperature sensor 1 for detecting indoor temperature and a humidity sensor (not shown) for detecting indoor humidity, and a refrigeration cycle for obtaining cold air or warm air. The constituent compressor 2, four-way valve 3, etc.
a fan motor 4 that sends the cold air or warm air into the room;
A control unit (microcomputer: CPU) 5 is provided which compares the indoor temperature set by the remote control with the temperature detected by the indoor temperature sensor 1 and controls the refrigeration cycle, fan motor 4, etc. in a predetermined manner. There is.

The control unit 5 also has an A/D conversion input port and an A/D conversion input port.
A memory is provided for storing the detected temperature input via the D conversion input port as digital data, and for storing the data N (integer) times.

Furthermore, as shown in FIG. 2, in the control section 5.

It has a function of shifting the data for N times, deleting the oldest data, and adding new room temperature data to make the data for N times.

Next, a control method applied to the air conditioner having the above configuration will be explained based on the flowchart shown in FIG.

First, the air conditioner is operated normally, and the indoor temperature sensor 1
Assuming that the indoor temperature has been detected by When the data of the second
As shown in the figure, when detecting the indoor temperature, the N times of data in the memory are shifted one data at a time (step 5T2), that is, one of the oldest data is deleted from the memory. Data for N-1 times will be stored in the memory. Next, the data of the temperature detected by the indoor temperature sensor is read (step 5T3), and the current data and the shifted N-1 pieces of data up to the previous time are used as data for N times (step 5T3). 5T4). The average value of the N times of data is calculated (step 5T5), and the data of this average value is used as detected temperature data, and the refrigeration cycle and fan motor 4 are controlled. Further, the current data and N-1 pieces of data up to the previous time are stored in the memory.

In this way, every time the temperature data detected by the indoor temperature sensor 1 is read by the control unit 5, the data from N times before, . The average value of this data and the current data is used as indoor temperature control data. Therefore, even if the current detected temperature is read as a value that changes irregularly, for example, a value that rises or falls instantaneously, the data used to control the refrigeration cycle and fan motor 4 are averaged over N times. Therefore, erroneous operations such as starting operation of the compressor 2 or stopping the compressor 2, for example, are not performed, and stable control is performed.

Note that until N pieces of data are stored in the memory,
For example, the detected temperature data may be used as data for temperature control, or the detected temperature data and the data obtained up to that point may be averaged, and this average value may be used as data for temperature control.

[Effects of the Invention] As explained above, according to the air conditioner control method of the present invention, when the indoor temperature is detected and the refrigeration cycle is controlled based on the detected temperature and the set temperature, the detected temperature The average value of N times of data is calculated from the data N-1 times and the temperature data of the current detection, and this average value data is regarded as the temperature data of the current detection, so the indoor temperature instantly rises. Or, when the indoor temperature drops, that is, when the indoor temperature changes irregularly, the refrigeration cycle etc. can be stably controlled without operating or stopping the compressor of the refrigeration cycle, and the indoor temperature changes irregularly. Control is performed stably, and performance can also be improved.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, and shows a schematic block diagram of an air conditioner to which the air conditioner control method is applied;
The figure is a diagram for explaining the contents of the memory used in the air conditioner, and FIG. 3 is a flow chart diagram for explaining the operation control method. FIG. 4 is a graph showing changes in indoor temperature. In the figure, 1 is an indoor temperature sensor, 2 is a compressor, 3 is a four-way valve,
4 is a fan motor, and 5 is a control unit (microcomputer: CPU). ■ Figure 1

Claims (1)

[Claims] (1) In an air conditioner control method for controlling indoor temperature, the temperature detected by the indoor temperature sensor is compared with a set temperature, and a compressor, etc. is controlled based on the comparison result, and the indoor temperature is set at a predetermined temperature. N detected temperature data are stored, and when the indoor temperature is detected by the indoor temperature sensor, the stored N data are stored.
At the same time, the current detected temperature data and N-1 data resulting from the shift are made N times of data, and the N times of data are averaged to obtain the detected temperature. A method for controlling an air conditioner, characterized in that: