JPS61202037A - Control device of air conditioner - Google Patents

Abstract

PURPOSE:To prevent the main body of the air conditioner from keeping on its operation despite that a transmission output is stopped from a remote control unit upon instantaneous interruption of service or the like by transmitting an operation stop signal from the remote control unit to the main body of the air conditioner for a predetermined period of time at a power source rise-up time such as the time a power source is connected or the time of instantaneous interruption of service. CONSTITUTION:At the power source rise-up time such as the time the power source is connected or the time of instantaneous interruption of service, simultaneously when a microcomputer 14 within a remote control unit is reset, a timer 20 counts for a certain period of time. During this time, until a drive switch (a push switch) is turned ON, an OFF signal is forcibly transmitted and output, and the drive of the main air conditioner body 1 is stopped. Hence, at the instantaneous interruption of service, even when only the microcomputer 14 within the remote control unit 2 is reset, an OFF signal is transmitted and output to the main air conditioner body 1 at the power source is restored. Therefore, despite that the microcomputer 14 within the remote control unit 2 is reset and the transmission output is stopped at the waiting state, it can be prevented that the microcomputer of the main air conditioner body is not reset but the drive condition is held.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for an air conditioner that transmits and controls an operation control signal to an air conditioner main body from a distance using a remote control unit.

Conventional technology In recent years, air conditioners have become more sophisticated and systematized, and the control device in the air conditioner itself is equipped with a microcomputer as a remote control unit, and control signals are transmitted from the remote control unit to the air conditioner itself. The number of air conditioner control devices that perform operation control is increasing. Hereinafter, an example of the above-mentioned air conditioner control device will be described with reference to the drawings. Figures 3 and 4 show the circuit configuration and operation flowchart of a conventional air conditioner control device. In Figure 3, 1 is the air conditioner main body, and 2 is the air conditioner main body. 1 is a remote control unit for controlling the unit from a distance, and the configuration of each unit is as follows. The air conditioner body 1 consists of the control circuit and load shown below. 03 is a power supply circuit, and 4 is a microcomputer that controls the power supply. A predetermined voltage is supplied from the power supply circuit 3 to the terminal v'cc. The microcomputer 4 includes a RAM 5 that stores input information data, and a ROMe that stores a procedure program for controlling the air conditioner body 1. 7 is a reset circuit that resets the microcomputer 4 when the power is turned on.
By inputting a reset signal to the 0 input terminal 1'1, the procedure program stored in the ROM 6 is reset and the contents of the RAM 5 are cleared. 8 is a receiving circuit which receives, amplifies and demodulates the control signal transmitted from the remote control unit 2 and inputs it to the input terminal Ia of the microcomputer 4.0 The input control signal is stored in the RAM 5 in the microcomputer 4; According to the procedure program stored in ROMe, a load drive signal is output from the output terminals %, o4, o4, and the compressor 1o, four-way valve 11. The indoor fan 12 is driven.

Next, the configuration of the remote control unit 2 is as follows01
A power supply circuit 3 obtains a predetermined voltage from the voltage supplied from the power supply circuit 3 in the air conditioner body 1 and supplies the voltage to the power supply terminal vCC of the microcomputer 14. The microcomputer 14 includes a RAM 15 and a ROM 16 as described above.
◇ 17 is a reset circuit which inputs a reset signal to the input terminal of the microcomputer 14. 018 is an operation switch consisting of an operation switch and a cooling/heating changeover switch and is an input terminal I of the microcomputer 18. Input the operation signal to. Note that the operation switch here is a button type switch, not a latch type switch. This is because, in the case of a latch type, when starting and stopping operation using a timer other than the operation switch, a problem arises in that the display state differs from that of the operation switch. The input operation signal data is stored in the RAM 1s, and a control signal is output from the output terminal 0° according to a procedure program stored in the ROM 16 and transmitted to the air conditioner body 1 via the transmission circuit 19.

The operation of the air conditioner control device configured as described above will be explained below based on the operation flowchart of the remote control unit related to the claims shown in FIG. 4.

First, when the power is turned on, the microcomputer 14
A reset signal is input from the reset circuit 17, the procedure program is started, the contents of the RAM 15 are cleared, and operation switch inputs are accepted and turned on. Below, only the operation switch signals related to the claims will be explained. First, it is a push switch that determines whether the operation switch is ON or OFF, so when it is pressed while stopped, it is ON, and when it is pressed while running, it is OFF.)
, if ON, an ON signal is transmitted and output to the air conditioner main body 1 via the transmission circuit 19. If it is OFF, it is determined whether it has been turned ON once from the initial. If it is not ON, the transmission output remains stopped, and if it is ON, the transmission output is turned ON.
The FF signal is transmitted and output, and the operation of the air conditioner main body 1 is stopped.

Note that the reason for stopping the transmission output here is to save power.

As mentioned above, determine whether the operation switch is ON or OFF.
The flow of transmitting and outputting an N or OFF signal, and if it has never been turned on from the initial stage, the transmission output remains stopped to save power, is repeated.◎ Problems that the invention attempts to solveHowever, In the above configuration, the air conditioner body 1
If the wiring between the remote control unit 2 and the remote control unit 2 is long, the voltage supplied to the remote control unit 2 will drop due to line loss, and there will be no margin for the operating voltage of the circuit, resulting in a momentary power outage during operation. If this occurs, depending on the degree of the instantaneous power outage, the microcomputer 4 in the air conditioner body 1 will not be reset because the drop in power supply voltage is small and will continue to operate in the same state, but the microcomputer in the remote control unit 2, The computer 14 is reset, the procedure program stored in the ROM 1e is reset to the initial stage, and the
The contents of the message disappear and the operation switch (button switch) is not turned on, so the transmission output stops. Therefore, even though the microcomputer 14 in the remote control unit 2 is in a standby state and transmission of multiple control signals has stopped,
Since the microcomputer 4 in the air conditioner body 1 is not reset, there is a problem in that the operating state is maintained.

In view of the above-mentioned problems, the present invention has been devised so that even if a momentary power outage occurs, the microcomputer in the air conditioner body is reset even though the microcomputer in the remote control unit is reset and transmission of control signals is stopped. An object of the present invention is to provide a control device for an air combing machine that eliminates the problem of not being reset and maintaining operation.

Means for Solving the Problems In order to solve the above problems, the air conditioner control device of the present invention has a configuration in which a timer is added to the microcomputer in the remote control unit to count up to a certain time from the time the power is turned on. The present invention has the above-described configuration, so that when the power is turned on or when the power is turned on during a momentary power outage, the microcomputer in the remote control unit is reset and at the same time the timer counts for a certain period of time, during which time the operation is stopped. Since the OFF signal is forcibly transmitted and output until the switch (button switch) is turned ON to stop the operation of the air conditioner, even if only the microcomputer in the remote control unit 2 is reset due to a momentary power outage, the power will not be turned off. Since the OFF signal is always transmitted and output to the air conditioner main unit when returning, the microcomputer in the conventional remote control unit is reset, and even though the transmission output is stopped in the standby state, the air conditioner There is no problem that the microcomputer in the main unit is not reset and remains in an operating state.

EXAMPLE A control device for an air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows a circuit configuration of a control device for an air conditioner according to the present invention. Components in the configuration that are the same as those of the conventional example are given the same numbers, and detailed explanation thereof will be omitted. Therefore, the difference in configuration is that when the power is turned on in the microcomputer 14 in the remote control unit 2, when a reset signal is input from the reset circuit 17, there is a timer 2o that counts up to a certain fixed time.
This is the addition of .

Regarding the air conditioner control device configured as above,
The operation will be explained below using FIGS. 1 and 2. FIG. 2 is an operation flowchart of the remote control unit,
First, the power is turned on, a reset signal is input from the reset circuit 17 to the microcomputer 14, the procedure program starts, and the contents of the RAM 1s are cleared.
0 and below, only the operation switch signal related to the present invention will be explained. First,
It is determined whether the operation switch is ON or OFF, and if it is ON, an ON signal is transmitted and output to the air conditioner body 1 via the transmission circuit 19. If it is OFF, it is determined whether it has been turned ON once from the initial setting, and if it is ON, an OFF signal is transmitted and output to stop the operation of the air conditioner body 1. It is determined whether the count) has elapsed, and if it has not elapsed, an OFF signal is transmitted and output for at least 10 seconds until the operation switch is turned on, and if it has elapsed, the transmission output is stopped. The above flow is repeated.

As described above, according to this embodiment, by providing the microcomputer 14 in the remote control unit 2 with the timer 20 that counts up to a certain time from the power on, when the power is turned on or when the power is turned on, such as during a momentary power outage, At the same time as the microcomputer 14 in the remote control unit 2 is reset, a timer 20 counts for a certain period of time, during which time an OFF signal is forcibly transmitted and output until the operation switch is turned ON. Therefore, in order to stop the operation of the air conditioner body 1, even if only the microcomputer 14 in the remote control unit 2 is set due to a momentary power outage, an OFF signal is always transmitted and output to the air conditioner body 1 when the power is restored. .

Even though the microcomputer 14 in the conventional remote control unit 2 is reset and the transmission output is stopped in the standby state, the microcomputer 4 in the air conditioner body 1 is not reset and remains in the operating state. The inconvenient problem of doing so will be resolved.

Effects of the Invention As described above, the present invention includes a transmitting means for transmitting a control signal into a remote control unit that remotely controls an air conditioner main body, and receives a control signal from the remote control unit into the air conditioner main body. By providing a function for transmitting an operation stop signal from the remote control unit to the air conditioner main body for a certain period of time when the power is turned on or when the power is turned on during a momentary power outage, The remote control unit forcibly transmits and outputs an OFF signal for a certain period of time or until the operation switch is turned on, and stops the operation of the air conditioner. This solves the problem of the air conditioner main body continuing to operate even though the output has stopped.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a control device for an air conditioner according to an embodiment of the present invention, FIG. 2 is an operation flowchart of the remote control unit of FIG. 1, and FIG. 3 is a diagram of a conventional air conditioner control unit. The circuit configuration diagram, FIG. 4, is an operation flowchart of the remote control unit of FIG. 3. 1... Air conditioner body, 2... Remote control unit, 8... Receiving circuit, 19...
・Transmission circuit, 2o...timer. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure

Claims (1)

[Claims] A remote control unit for controlling the air conditioner main body from a distance, a transmitting means for transmitting a control signal to the air conditioner main body in the remote control unit, and a transmitting means for transmitting a control signal from the remote control unit in the air conditioner main body. and receiving means for receiving the air conditioner, and is configured to transmit an operation stop signal for a certain period of time from the remote control unit to the air conditioner main body when the power is turned on or when the power is turned on such as during a momentary power outage. Control device.