KR20000020754A - Method for detecting temperature of air conditioner - Google Patents

Abstract

PURPOSE: A method for detecting the temperature of an air conditioner is provided to detect the temperature according to the characteristic of the detecting part of temperature by preventing the over-load generated from the uniform detection of temperature. CONSTITUTION: A detecting method of temperature comprises of steps of: judging if the generating the number of times of interrupt(C) generated from a counter is under a first established the number of times(Ci); selecting a first port when the generating the number of times of interrupt(C) is under the first established the number of times(Ci); accumulating data of temperature detected in a first port for a first number of times(i); judging if the generating the number of times of interrupt(C) is a second established the number of times(Ci+j) when the generating the number of times of interrupt(C) is over the first established the number of times(Ci); converting from the first port to a second port when the generating the number of times of interrupt(C) is over the first established the number of times(Ci) under the second established the number of times(Ci+j); and accumulating the data of temperature detected in the second port for the second number of times(j).

Description

Temperature sensing method of air conditioner

The present invention relates to an air conditioner, and more particularly, to a temperature sensing method of an air conditioner.

In general, the air conditioner detects the room temperature periodically because the room temperature is always changed by the load operation or external influence of the compressor regardless of the remote control signal.

The air conditioner according to the prior art is a desired operation mode is input through the user's key operation. The air conditioner is operated according to an operation command of an operation mode selected by a user.

The air conditioner in the cooling mode lowers the temperature of the indoor air to the desired temperature set by the desired temperature setting command of the remote controller input by the user after the operation operation.

The air conditioner performs an operation to lower the indoor air temperature to a cold atmosphere according to the desired temperature set by the desired temperature setting command of the remote controller in the cooling mode.

Hereinafter, with reference to the accompanying drawings as follows.

1 is a block diagram schematically showing an air conditioner according to the prior art, Figure 2 is a flow chart showing a temperature sensing method of the air conditioner according to the prior art.

As shown in FIG. 1, a conventional air conditioner includes a remote controller signal receiver 20 for receiving a remote controller 10 signal, an indoor temperature detector 30 for sensing an indoor temperature, and the remote controller signal receiver 20. The microcomputer 40 for receiving the signal received from the temperature and the temperature data detected by the indoor temperature sensing unit 30 and outputs a control signal according to the, and the indoor fan motor 50 driven in accordance with the control signal of the microcomputer 40 ), An outdoor fan motor 60, and a compressor 70.

The indoor temperature detecting unit 30 includes an indoor suction temperature detecting unit 31 for detecting an indoor suction temperature, an indoor discharge temperature detecting unit 32 for detecting an indoor discharge temperature, and an indoor piping temperature for detecting an indoor piping temperature. It consists of a sensing unit 33.

In addition, the indoor pipe temperature sensor 33 is a first port, the indoor discharge temperature sensor 32 is a second port, the indoor suction temperature sensor 33 is applied to the microcomputer 40 through a third port. will be.

The remote control signal receiver 20 switches the infrared signal output from the remote controller 10 into an electrical signal, and the microcomputer 40 performs an operation corresponding to the output signal of the remote controller signal receiver 21. Control the air conditioner.

The indoor temperature sensing unit 30 generates an interrupt at a predetermined period T at a timer (not shown), and according to an interrupt occurrence count C generated at a predetermined period T at the timer (not shown). Performs the temperature sensing of the different portions through the first to third ports.

Such a temperature sensing method of the air conditioner is as shown in FIG.

First, the timer generates an interrupt at a predetermined period T (S1), and increases the number of interrupt occurrences C generated at the first port (S2).

It is determined whether the number of interrupt occurrences C is 1 in the first port (S3). If the number of interrupt occurrences C is 1 according to the determination result, the first port is converted from the first port to the second port (S4).

If the interrupt occurrence number C is not 1 according to the determination result, it is determined whether the interrupt has occurred twice (S5). If the interrupt occurs twice according to the determination result, it is switched from the second port to the third port. (S6).

If the interrupt is not generated twice according to the determination result, the interrupt generation count is initialized (S7), and the third port is switched from the first port (S8).

The temperature data detected by the first to third ports are accumulated for 256 times (S9), and the average value is calculated by dividing the accumulated value of the first to third ports by 256 and stored in the first to third memories, respectively. After the initialization (S10).

As described above, in the method for detecting a temperature of an air conditioner according to the related art, as the count value is increased by 1 by increasing the interrupt occurrence frequency C, as shown in FIG. While converting to a port, the temperature detection value applied to each port is accumulated and stored 256 times. At this time, by dividing the accumulated temperature detection value for each of the first to third ports by 256 to extract the average value to control the temperature according to the average value.

The temperature sensing method of the air conditioner according to the prior art has the following problems.

First, there is a fear that overload occurs because the temperature is sensed uniformly regardless of the temperature sensing characteristics.

Second, when an overload occurs in a specific part of the air conditioner, the overload meter (OLP) is operated to stop the operation of the air conditioner.

The present invention has been made to solve the above problems, and an object thereof is to provide a temperature control method of an air conditioner that can sense the temperature according to the characteristics of the temperature sensing site.

1 is a block diagram schematically showing a general air conditioner

2 is a flow chart showing a temperature sensing method of an air conditioner according to the prior art

3 is a view showing a temperature sensing process for each port according to the prior art

4 is a flow chart illustrating a temperature sensing method of an air conditioner according to the present invention.

5 is a view showing a temperature sensing process for each port according to the present invention

According to an exemplary embodiment of the present invention, a temperature sensing method of an air conditioner having a counter, first to third ports, and a memory may determine whether an interrupt occurrence number C generated by the counter is less than a first set number C _i . In the first step, and if the interrupt occurrence frequency (C) in the first step is less than the first set frequency (C _i ), the first port is selected, and the temperature data detected by the first port is first retrieved (i). and a second step of accumulation during the third step which is interrupted recovery (C) in the first step determines whether or not less than a first predetermined number of times not less than (C _i) the second predetermined number (C _{i + j)} In the third step, if the interrupt occurrence frequency (C) is greater than or equal to the first set frequency (C _i ) and less than the second set number (C _{i + j} ), the first port to the second port is converted and the second port In a fourth step of accumulating the sensed temperature data for a second number of times, and in the third step. And a fifth step of determining whether or not the interrupt is generated number (C) a second set number (C _{i + j)} above is interrupted number (C) is less than the third predetermined number _{(C i + j + k)} , wherein In the fifth step, if the interrupt occurrence frequency (C) is less than the third set frequency (C _{i + j + k} ), the second port is converted from the second port to the third port, and the temperature data detected at the third port is recovered a third time (k). The sixth step of accumulating is).

Hereinafter, the temperature sensing method of the air conditioner according to the present invention will be described with reference to FIG.

First, the present invention determines whether the number of occurrences C of the interrupt generated in the counter is less than the first set number of times C _i (S21).

If the occurrence number C of the interrupt generated by the counter is less than or equal to the first set frequency C _i according to the determination result, the occurrence frequency C of the interrupt generated by the counter is equal to the first set frequency C _i . Comparative determination is made (S23).

When the number of occurrences C of the interrupt generated by the counter is less than or equal to the first set number C _i , the temperature data value detected by the first port is accumulated and stored for the first number i (S24).

When the number of occurrences C of the interrupt generated by the counter exceeds the first set number C _i , the detection portion of the interrupt is moved to the second port (S25).

The number of occurrences of the interrupts generated by the counter (C) is a first predetermined number (C _i) or more and first determines whether or not the second set number (C _{i + j)} or less (S26).

According to the determination result, if the occurrence frequency C of the interrupt generated in the counter is equal to or greater than the first set frequency C _i and less than or equal to the second set frequency C _{i + j} , the occurrence frequency of the interrupt generated in the counter ( C) is compared with the second predetermined number of times (C _{i + j} ) and determined (S27).

If the number of occurrences (C) of the interrupts generated by the counter coincides with the second set number (C _{i + j} ), the interrupt is detected at the third port (S28), and if it does not match, the temperature data value detected at the second port And accumulate and store by the second number of times j (S29).

The occurrence frequency C of the interrupt generated by the counter is determined by comparing with the third set frequency C _{i + j + k} (S30), and according to the determination result, the third set frequency C _{i + j + k} . If it matches, the first port detects an interrupt again (S31).

If the occurrence frequency C of the interrupt generated by the counter does not match the third set frequency C _{i + j + k} , the temperature data value detected by the third port is accumulated and stored for a third number k. S32).

It is determined whether the number of occurrences C of the interrupt generated by the counter has been generated by a predetermined cumulative number n, and the temperature data sensed by each port is accumulated by the cumulative number n of the cumulative number of times (n). The average value is calculated by dividing by n) (S33).

When the occurrence frequency C of the interrupt generated by the counter is smaller than the first set frequency C _i , the temperature data value detected by the first port is accumulated.

If the interrupt occurrence number (C) generated by the counter is less than the first predetermined number (C _i) a first predetermined number of times large the second set than (C _i) number (C _{i + j)} is at the second port Accumulate the sensed temperature data.

Temperature data detected by the third port when the occurrence frequency C of the interrupt generated by the counter is greater than the second set frequency C _{i + j} and smaller than the third set frequency C _{i + j + k} . Accumulate the values.

When the occurrence frequency C of the interrupt generated by the counter becomes the third set frequency C _{i + j + k} , the temperature data value detected by the first port is accumulated again.

The first port is a port for detecting the temperature of the indoor piping, so the change rate is rapid because the change temperature of the refrigerant is sensed, thereby shortening the cycle for control.

The second port is a port for sensing the temperature discharged from the air conditioner and has a medium period, and the third port is a port for sensing the indoor temperature, so that the temperature change rate is gentle, thereby lengthening the temperature sensing cycle.

By the above-described method, the temperature can be controlled according to the sensing region by the average value calculated repeatedly for the cumulative number of times n.

As shown in FIG. 5, the temperature detection method in the first to third ports may have a difference in time for obtaining a final cumulative value according to i, j, and k values for each of the first to third ports. At this time, the difference in the control operation according to the change in the temperature data detected by each port by the time difference can be made. I, j, and k satisfy i> j> k.

The temperature sensing method of the air conditioner according to the present invention has the following effects.

First, load control can be efficiently performed by adjusting the temperature sensing period according to the characteristics of the temperature sensing region.

Second, it is possible to prevent the occurrence of overload in advance by quickly detecting and processing the pipe temperature even in the overload state generated during heating operation.

Claims (3)

In an air conditioner with a timer, first to third ports, memory, A first step of determining whether an interrupt occurrence number C generated by the timer is less than a first set number C _i ; A second step of accumulating the temperature data sensed at the first port for a first number of times (i) when the interrupt occurrence frequency (C) is less than the first set number (C _i ) in the second step; A third step of determining whether the interrupt generation frequency (C) is less than the second setting frequency (C _{i + j} ) when the interrupt generation frequency (C) is greater than or equal to the first setting frequency (C _i ) in the second step; In the fourth step, if the interrupt occurrence frequency (C) is greater than or equal to the first setting frequency (C _i ) and less than the second setting frequency (C _{i + j} ), the first port is converted from the second port to the second port, and the second port is detected. A fourth step of accumulating accumulated temperature data for a second number of times j; Determining whether the interrupt generation number C is less than the third setting number C _{i + j + k} when the interrupt generation frequency C is greater than or equal to the second set frequency C _{i + j} in the fourth step. 5 steps; In the fifth step, if the interrupt occurrence frequency (C) is less than the third set frequency (C _{i + j + k} ), the second port is converted from the second port to the third port, and the temperature data detected at the third port is recovered a third time ( k) a temperature sensing method of the air conditioner, comprising a sixth step of accumulating. The method of claim 1, Wherein said first to sixth steps are repeated for a predetermined cumulative number of times (n). The method of claim 1, I, j, k is a temperature sensing method of the air conditioner, characterized in that i> j> k conditions.