JPS62182547A - Backup device in air-conditioning machine - Google Patents

Abstract

PURPOSE:To permit to reproduce a set condition correctly when electric power is supplied again by a method wherein a transmitting means, transmitting backup operating condition control data to a remote controller, is equipped in the title device. CONSTITUTION:An indoor control unit 1 inputs A.C. electric source 11 and D.C. voltage is supplied by a constant voltage circuit 12 while the D.C. voltage is supplied to a remote control unit 4 through an electric source wire 13. The indoor control unit 1 is provided with a micro-computer 14, controlling various operations, and a backup circuit 18, effecting the backup of the micro-computer 14. A modulating circuit 16, inputting the output data of a data input and output deciding micro-computer 15, transmits a modulation output signal to the electric source wire 13 while a demodulation circuit 17, receiving a signal transmitted through the electric source wire 13 as input, supplies demodulating data to the micro-computer 15. Further, the output terminal of the backup circuit 18 is connected to the electric source terminal of the micro-computer 14 and permits to supply a sufficient electric source voltage for holding the necessary data in case an electric supply from the A.C. electric source 11 is stopped.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a backup device for an air conditioner, and more specifically, a remote control device is connected to the main body of the air conditioner via a signal line, The present invention relates to a device for backing up operating state control data of an air conditioner that remotely controls the operating state of the air conditioner main body.

<Conventional technology> For the purpose of improving usability, a remote control device has been connected to the air conditioner body via a signal line, and the operating status of the air-phase line can be checked without approaching the air conditioner body. Those that can control the temperature to a desired state are widely used.

This type of air conditioner has a switch for switching between cooling and heating.
Run/stop switch, ffl! settings switch,
Temperature setting knobs, etc. are attached to the remote control device, and by operating the various switches mentioned above, a signal corresponding to the operating state is transmitted to the air conditioner main unit through the signal line. By holding the signal as a reference value and controlling its own operation based on this reference value, the indoor atmosphere can be maintained in a state that approximates the set condition.

<Problems to be Solved by the Invention> The air conditioner with the above configuration can perform the above operations without any inconvenience if power is continuously supplied, but if the power is cut off midway through, or when a power outage occurs, the reference values set by the various switches, knobs, etc. mentioned above will not be maintained at all, and the operating state will be different when the power supply is resumed. Since it is completely unknown whether the selected item will be selected or not, the necessary setting operations must be performed again, which requires extra operation time and effort.
There is a problem that the previous setting conditions may not be accurately reproduced.

When the power is turned on, the remote control device is energized through the air conditioner itself, and
The size of the casing of a remote control device is predetermined based on ease of use, standards, etc., and there is no room for incorporating a backup power source, and since the operating status is set by the remote control device, a backup power source is not required. Considering that it was naturally thought that the system should be incorporated into a remote control device, it was thought that the above-mentioned problem could not be solved at all.

<Object of the invention> This invention was made in view of the above problems,
The present invention aims to provide a backup device for an air conditioner that can back up operating state control data without incorporating a backup power source into the remote control device.

Means for Solving the Problems> In order to achieve the above object, the backup device of the present invention includes a power source for backing up operating state control data on the air conditioner main body side, and a backup device for backing up the operating state control data when the power is turned on for operation. and transmitting means for transmitting the operating state control data to the remote control device.

The power source for backing up the operating state control data is preferably a supercapacitor.

Further, the part to which the power source for backing up the operating state control data is attached may be an indoor unit of the air conditioner or an outdoor unit of the air conditioner.

Furthermore, the signal line for transmitting and receiving signals between the air conditioner main body and the remote control unit may also serve as a power supply line.

With the backup device configured as described above, the remote The operating state control data set by the control device is stored in the air conditioner main unit, and in the event of a power cutoff, the above operating state control data is backed up by the backup power supply of the air conditioner main unit, and the power is turned on. When the state has recovered, the transmitting means transmits the stored operating state signal to the remote control device, and the previous operating state is displayed on the remote control device.

Even when the backup power source is a supercapacitor, the same effect as described above can be achieved, and the part to which the backup power source is attached is an indoor unit of an air conditioner. Even in the case of an outdoor unit of an air conditioner, the same effect as described above can be performed.

Furthermore, if the signal line also serves as a power line, the number of lines between the air conditioner main body and the remote control device can be reduced.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

FIG. 3 is a schematic diagram showing the system configuration of the air conditioner, which includes an indoor control unit [11F2+, an outdoor control unit (3), and a remote control unit [41,!]. :
The indoor control unit (2), the outdoor control unit (3), and the remote control unit (4) each exchange data with the indoor control unit (1).

Therefore, by transmitting the operating state control data from the remote control unit (4) to the indoor control unit (1), the indoor control unit (1) controls the indoor unit (not shown) and at the same time transmits the necessary data. The information is transmitted to the external control unit (3) to control the outdoor unit (not shown) so as to ensure the set operating state, and further,
The necessary data is also transmitted to the indoor control unit (2),
The indoor unit (not shown) is controlled to ensure the same operating state as the indoor control unit (1). The operating state control data transmitted from the remote control unit (4) is then transmitted from the indoor control unit (1) to the remote control unit (4).

Data exchanged between the indoor control unit (1) and the remote control unit (4) will be explained below.

The data transmitted from the remote control unit (4) to the indoor control unit (1) includes address data, operation/stop instruction data, temperature setting data, and III suspension data.

Conversely, the data transmitted from the indoor control unit (1) to the remote control unit (4) includes address data, abnormal/normal identification data, running/stop status data, set temperature data, set air volume data, and abnormal status display code. etc., and has the same data length as the above data.

After the start of operation, the above data are transmitted from the indoor control unit (1) to the remote control unit (4), and then from the remote control unit (4) to the indoor control unit (1). I'm trying to get it done. That is, indoor control unit (1)
is the main station.

FIG. 1 is an electrical circuit diagram showing the relationship between an indoor control unit (1) and a remote control unit (4).

The indoor control unit (1) is supplied with a predetermined DC voltage by a constant voltage circuit (12) whose input source is an AC power supply (11), and the DC voltage output from this constant voltage circuit (12) is Voltage is also supplied to the remote control unit (4) through the power supply 1 (13).

The indoor splinter unit (1) has a microcomputer (14) for controlling various operations, and a microcomputer (15) for data input/output control.
), a modulation circuit (16), and a demodulation circuit (17), and further includes a backup circuit (18) for backing up the microcomputer (14).

To explain in more detail, the microcomputer (
14) and the microcomputer (15), data is exchanged in units of several bits.

Then, a modulation circuit (16) which receives the output data from the microcomputer (15) sends a modulated output signal to the power supply line (13), and conversely receives the signal transmitted through the power supply 1 (13). Demodulation circuit (17) for input
However, the #i tone data is sent to the above microcomputer (15).
We are trying to supply it to

Further, the output terminal of the backup circuit (18) is connected to the power supply terminal of the microcomputer (14), and the power supply type is sufficient to retain necessary data when the power supply from the AC power supply (11) is stopped. This makes it possible to supply pressure.

The remote control unit (4) includes a microcomputer (41L modulation circuit (43),
and a demodulation circuit (44).

To explain in more detail, the microcomputer (
41) identifies the type of input data by inputting signals corresponding to various switch operations (not shown);
A signal corresponding to the input data is supplied to the display (42) to display the set operating state, and the signal is also supplied to the modulation circuit (43) to send the modulated output signal to the power supply line (13). ).

Further, the microcomputer (41) converts the signal transmitted through the power line (13) into a demodulation circuit (
44) in a demodulated state, and a signal corresponding to this captured signal is supplied to the display device (42) to display the transmitted operating state. However, this transmitted operating state is the operating state initially set by the remote control unit (4).

The operation of the air conditioner having the above configuration is as follows.

fll To perform normal operation In this case,
When the desired operating state is set by operating various switches on the remote control unit (4), the microcomputer (41) identifies the type of input data and displays a signal corresponding to the input data on the display (42). The signal is supplied to the modulation circuit (43) to display the set operating state, and the signal is also supplied to the modulation circuit (43) to send a modulated output signal to the power supply line (13).

The modulated output signal is supplied to the demodulation circuit (17) through the power supply II (13), and the demodulated data output from the demodulation circuit (17) is supplied to the microcomputer (14) through the microcomputer (15). Then, the microcomputer (14) identifies the set operating state based on the demodulated data, and transmits a signal corresponding to the demodulated data to the fan drive section, temperature detection section, etc. (not shown) of the indoor control unit (1). to operate in the set operating state. The microcomputer (14) also supplies necessary control signals to the dormitory control unit l-[2+ and the outdoor control unit (3), so that they perform operations corresponding to the operating state (this part is explained below). Although not shown, data transmission is performed in the same manner as the data transmission between the indoor control unit (1) and the remote control unit (41).

After the setting data from the remote control unit (4) is transmitted to the indoor control unit 1) as described above, the indoor control unit (1) then sends the received settings to the remote control unit (4). The data is transmitted as is. therefore,
On the remote control unit (4) side, it is possible to determine whether or not the initial setting data matches the data transmitted from the indoor control unit (1).

fll) If a power outage or power cutoff due to incorrect operation occurs during operation, in this case, all power to the indoor control unit (1) (2+), outdoor control unit (3), and remote control unit (4) will be cut off. With the exception of the indoor control unit (1), the data for performing the driving operation up to that point will not be retained.In the indoor control unit (1), the backup circuit (1) will be shut off.
8) backs up the microcomputer (14), and initially the remote control unit (4)
) will continue to hold the operating state control data set.

After that, if the power outage or power interruption due to erroneous operation is resolved, the backup circuit (18) stops backing up the microcomputer (14) as soon as the indoor control unit (1) is powered back up, and the AC power supply ( 11) is performed. Then, AC power supply (
When the operating state is shifted to January, the operating state control data backed up in the microcomputer (14) is transferred to the microcomputer (41) through the modulation circuit (16), power line (13), and demodulation circuit (44).
), the remote control unit [
41 is capable of recovering the operating state control data in the microcomputer (41), and
The indicator (42) can be activated to restore the display of the set operating state.

The operating state control data backed up in the microcomputer (14) is also transmitted to the indoor control unit (2) and outdoor control unit (3), so the operation is performed based on the original operating state control data. can be set.

As is clear from the above explanation, the remote control unit (4) is not particularly provided with a backup circuit, but when the power is restored, the necessary data is transferred from the indoor control unit (1) that had been backed up. is transmitted and this data is stored in the microcomputer (41) of the remote control unit (4), so that the remote control unit (4) essentially performs the same operation as if it were provided with a backup circuit. be able to.

FIG. 2 is an electrical circuit diagram showing FIG. 1 in more detail,
Portions corresponding to those in FIG. 1 are given the same reference numerals.

Microcomputer (14) of indoor control unit (1)
) has a constant voltage circuit (
12), a predetermined DC voltage is supplied by the constant voltage circuit (12) and the microcomputer (14).
), a backup circuit (
18) is connected. Note that (18c) is a backflow prevention capacitor connected to back up only the microcomputer (14).

Further, the output voltage from the constant voltage circuit (12), that is,
It has a reset IC (19) that selectively outputs low-level and high-level signals in response to the cutoff state and supply state of the AC power source (11). The output signal of the reset IC (19) is supplied as it is to the backup mode terminal of the microcomputer (14), and is also connected to a delay circuit formed by connecting a resistor (20) and a capacitor (21) in series. supplying. The above resistance (2
0) and the capacitor (21) is passed through the resistor (22) to the reset signal generation circuit (23).
), and reset signals of opposite levels output from the reset signal generation port (23) are supplied to the reset terminal of the microcomputer (14) and the non-reset terminal of the microcomputer (15), respectively. There is.

Furthermore, the modulation circuit (16) and the demodulation circuit (17)
and the power line (13) are both connected through one transformer (24).
) and a capacitor (25).

A predetermined DC voltage is supplied to the microcomputer (41) of the remote control unit (41) by a full-wave rectifier circuit (45) and a smoothing circuit (46) connected to the power supply line (13).

The modulation circuit (43) and the demodulation circuit (44)
) and the power supply line (13) are both connected via one transformer (47) and a capacitor (48), as in the case of the indoor control unit (1).

Furthermore, various operation switches (49) connected in a matrix are connected to the microcomputer (41), and a display device (42) is also connected thereto.

The indicator (42) has LEDs corresponding to operation, defrosting, fan strength and weakness, and an LED corresponding to the set temperature, and a microcomputer (42) for driving the LED corresponding to the set temperature. 50).

The operation of the air conditioner having the above configuration will be explained below.

When the AC power supply (11) is energizing, the microcomputers (14), (15), and (41)
) (50), modulation circuits (16) (43), and demodulation circuits (17) (44) are supplied with operating DC voltage, so the various switches (49) of the remote control unit (4) are By operating it, the compressor, fan, etc. (not shown) can be driven in the set operating state. In this state, the supercapacitor (18a) constituting the backup circuit (18) is being charged, and the operating state control data is being stored in both the microcomputers (14) and (41). There is.

If the AC power supply (11) is cut off for some reason, the charge stored in the super capacitor (18a) will cause the microcomputer (14) to
), the operating state control data is held in the stored state. Then, the output signal of the reset IC (19) becomes low level due to the current cutoff by the AC power supply (11), so the microcomputer (14) enters a so-called backup mode with a current consumption of several μA, and the set temperature data, set ffi ! It is possible to hold operating state control data such as data.

In addition, other microcomputers (15) (41) (50
) is not connected to a backup power supply circuit, so the various data stored therein will not be retained at the same time as the operation is stopped.

After that, when the power supply from the AC power supply (11) is restored, the output signal of the reset IC (19) becomes high level, and the timing at which this high level becomes high is due to the reset signal from the reset signal generation circuit (23). Since the timing is earlier than that supplied to the microcomputer (14), the microcomputer (14) cancels its own backup mode and enters the normal operation mode.

At the beginning of returning to this normal operation mode, the microcomputer (14) drives the modulation circuit (16) to remotely control the set temperature data and set air volume data that were backed up through the power line (13). The data is transmitted to the microcomputer (41) in the remote control unit (4) through a capacitor (48), a transformer (47), and a demodulation circuit (44).

Thereafter, unless the various operating switches (49) of the remote control unit (4) are operated to change the operating state control data, operation can be performed based on the original operating state control data.

Note that this invention is not limited to the above embodiments,
For example, it is possible to use a battery instead of the supercapacitor (18a), it is possible to use a dedicated data transmission line instead of sending and receiving various data through the power line (13), and other Various design changes can be made without changing the gist of the invention.

<Effects of the Invention> As described above, the present invention is capable of retaining operating state control data even when a power cutoff state occurs.
Moreover, it has the unique effect that there is no need to increase the size of the remote control unit itself.

[Brief explanation of drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of the remote control device backup device of the present invention, FIG. 2 is a more detailed electric circuit diagram, and FIG. 3 is a schematic diagram showing the system configuration of an air conditioner. (1)... Indoor control unit, (3)... Outdoor control unit, [41... Remote control unit, (13)... Power line, (14) (41)... Microcomputer, (1f
3) (43)... Modulation circuit, (17) (44)...
demodulation circuit, (18)...backup circuit,

Claims (1)

[Claims] 1. Air conditioner body and air conditioner body The operating status can be controlled remotely via signal lines. Consists of a remote control device In air conditioners that are Operation status control data backup on main unit side When turning on the power for the The above operating status system that is backed up control data to a remote control device and a transmission means for transmission. Features of back-up in air conditioners device. 2. Remote control device backup The power supply for the tap is a supercapacitor. Air conditioner according to claim 1 above Backup device for Japanese machines. 3. Remote to the indoor unit of the air conditioner Power supply for control device backup Claim 1 above, which attaches Backup for air conditioners described in device. 4. Remote to the outdoor unit of the air conditioner Power supply for control device backup Claim 1 above, which attaches Backup for air conditioners described in device. 5. The signal line also serves as a power line Air conditioning according to claim 1 Backup device for machines.