JPS60253748A - Centralized supervisory device for air conditioner - Google Patents

Abstract

PURPOSE:To enable a device to be effectively used, by a method wherein a battery is provided as a reserve power source, and when power failure such as a stoppage of a commercial power source is detected, a power source for a memory circuit is automatically switched from a stabilized power source to the battery. CONSTITUTION:When the supply of the commercial power source is stopped due to power failure or the like and the voltage of the stabilized power source 45 falls below the voltage of the battery 47, the power source for the memory circuit 43 is automatically switched to the battery 47 by a switching circuit 48 to hold the stored contents. Thereafter, when the voltage of the power source 45 is raised above the voltage of the battery 47 by resetting, the power source for the circuit 43 is switched back to the power source 45. When the battery 47 is consumed due to repeated power failure or the like, it is impossible to compensate for power failure by the battery 47. To avoid such a problem, the voltage of the battery 47 is constantly monitored through a comparing circuit 46, and when the voltage is lowered to a predetermined value, e.g., 3.0V, it is judged that the useful life of the battery 47 has expired, and an indication is made to inform the administrative operator of this condition.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a centralized monitoring device for air conditioners, and in particular, to a device for centrally monitoring air conditioners, and in particular for installing air conditioners equipped with terminal control devices in each of a plurality of rooms, and controlling each of these terminals. A central monitoring device for air conditioners in which the device is centrally controlled by a central control device, which compensates for power supply to a memory circuit provided in the central control device in the event of a commercial power outage, etc. This is related to.

[Traditional technique]

In conventional air conditioner centralized monitoring devices of this type, are the initial conditions and operating conditions set for each air conditioner, terminal control device, etc. stored in the central control device? In the event of a commercial power outage, etc., there is a risk that the memory contents held in this memory circuit will be lost, and these conditions, etc., must be newly set each time they are lost. .

[Summary of the invention]

In view of these conventional drawbacks, this invention provides a battery as a power source to compensate for power outages, in addition to a stabilized power source using a commercial power source, and stores memory when a power interruption such as a power outage of the commercial power source is detected. The power supply to the circuit can be automatically switched from a stabilized power source to a battery.

[Embodiments of the invention]

Hereinafter, one embodiment of the central monitoring device for air conditioners according to the present invention will be described in detail with reference to FIGS. 1 to 14.

In this example device, in order to facilitate understanding of the content of the invention, one example of an air conditioner equipped with this type of terminal control device will be described.
An overall air conditioning system in which one or more terminal control devices are installed in each of a plurality of rooms and each of these terminal control devices is centrally controlled by a central control device will be described.

FIG. 1 is a system diagram showing the overall configuration of the apparatus of this embodiment. In FIG. 1, 1 is a central control unit that controls the entire system (hereinafter referred to as the master unit), 1a is a sub-central control unit (hereinafter referred to as the sub-master unit) that has exactly the same functions as the main unit 1, and 2 4 is a terminal control device (hereinafter referred to as a slave unit) that operates an air conditioning fi (hereinafter referred to as an air conditioner) 3 under the control of the master unit 1 or the sub-master unit 1a; It is a communication line such as a coaxial cable that transmits signals between the sub-base unit 1a and the slave unit 2. In addition, in the figure, A-F is a room in which the air conditioner Ia3 is installed, and the air conditioner 3 has its air conditioning capacity,
Depending on the volume and size of the room, only one unit may be installed, or multiple units may be installed.

FIG. 2 is an external view showing the operation section (front) of the base unit 1, which is used to perform all operations such as starting and stopping the air conditioner 3 installed in each room. It consists of each operation switch, 1 indicator lamp, etc.

That is, reference numeral 5 denotes an illuminated power switch, and when the power supply is normal, when this switch 5 is turned on, the push button portions of the other switches are illuminated. Reference numeral 13 denotes an operation switch, and the operation of this switch 13 controls the operation and stopping of the air conditioner 3 in each room. Reference numeral 15 denotes an operation command lamp, which is turned on and off by operating the operation switch 13. When it is lit, it instructs the air conditioner 3 to operate, and when it is off, it instructs the air conditioner 3 to stop. Show that you are giving instructions.

Reference numeral 14 is an external control lamp, which allows the operation switch 1 to be
Are functions such as 3 performed on an external computer system? ) lights up when Reference numeral 16 denotes a monitoring lamp, which lights up when the air conditioner 3 is in operation. Reference numeral 17 is a family name card that can be freely replaced and displayed, and includes the name of the room controlled by the operation switch 13, etc. The number displayed on this card 17 corresponds to each of the 32 operation switches in this embodiment. Identify 13.

Furthermore, 7 is a simultaneous operation switch, and by operating this switch 7, only the air conditioners 3 set to the operation state by the operation switch 13 can be operated at the same time, and at this time, the display lamp 19 indicates that they are in the operation state. Light up and display. Reference numeral 6 denotes a key lock switch, and by operating this switch 6, all inputs made by operating the operation switch 13 are ignored, and the indicator lamp 18 lights up to indicate the operation.

Reference numeral 9 denotes a gas leak alarm lamp, which lights up when a gas leak alarm 30, which will be described later and is connected to the handset 2, detects a gas leak. Reference numeral 10 denotes an operation alarm lamp, which lights up when the air conditioner 3 performs an operation different from the command from the main unit 1. Reference numeral 11 denotes a communication alarm lamp, which lights up when communication is not performed normally due to disconnection or short circuit of the communication line 4. Reference numeral 12 denotes an operation request lamp, which lights up when an operation request switch 28, which will be described later, is connected to the slave device 2. 8 is a speaker, and the gas leak alarm lamp 8. Operation alarm lamp io, communication alarm lamp 11. When any one of the driving request lamps 12 is lit, this is notified by an alarm sound.

FIG. 3 is an external view showing the rear side of the base unit 1. As shown in FIG. 20
is a changeover switch for setting the system status, 2
1 is a connector for connecting the standard interface compliant with ETA-R5232C, 22 is a setting switch for setting the communication method of the standard interface, 23 is a volume for adjusting the volume of the alarm sound, and 24 is a connection for connecting the signal line 4. 25 is a grounding terminal for grounding, 26 is a 2nd plug provided for convenient use of other electrical equipment at the same time.
0 type outlet, 27 is a power plug for receiving commercial power supply.

FIG. 4 is a block diagram of the configuration of the terminal side. External output terminal material gas leak alarm 30
．． Operation request switch 29. An external thermostat 28 whose contacts are turned on/off depending on the set temperature is connected to each.

FIGS. 5(a) and 5(b) are external views of the handset 2. FIG.

31 is a connector for connecting the air conditioner 3, 32 is a connector for connecting the gas leak alarm 30, 33 is a connector for connecting the external thermostat 28, 34 is a connector for connecting the signal line 4, 3
5 is an identification number setting switch for setting a slave device identification number, and 36 is a mounting terminal to which the operation request switch 28 is connected.

FIG. 6 is a circuit block diagram of the master unit 1 and the sub-master unit 1a, with a microcomputer 40 as the center, a storage circuit 43 for storing programs of the microcomputer 40, and connections with an EIA-R3232C compliant standard interface. Standard interface circuit 37 for
, a modem circuit 38 that performs FSX modulation and demodulation for communicating with the handset 2, a display circuit 39 that flashes display lamps such as the external control lamp 14 and the operation command lamp 15, and inputs to switches such as the operation switch 13. It is comprised of a switch input circuit 41, an alarm sound generation circuit 44 that generates the alarm sound, etc., and a power supply circuit 42 that supplies power to each circuit.

FIG. 7 is a block diagram showing details of the power supply circuit 42. As shown in FIG. 45 is a stabilized power supply; 47 is a power failure compensation battery for the memory circuit 43; 46 is a comparison circuit that measures the voltage of the battery 47 to determine its degree of wear; and 48 is the memory circuit when energized. 43 is supplied with power from the stabilized power supply 45, and switches it to the battery 47 in the event of a power outage.In this way, the power for the memory circuit 43 is supplied by the output of the switching circuit 48, and the power for other circuits is is supplied from a stabilized power supply 47, and the output of the comparison circuit 48 is connected to the microcomputer 40.

FIG. 8 is a circuit diagram showing the connection between the handset 2 and the air conditioner 3, where the air conditioner 3 is a gas heater as an example. 49
5 is a power plug for supplying commercial power; 51 is an automatic/manual switch for switching between operating the air conditioner 3 under centralized control or independently and manually; 5;
0 is the main switch that turns on/off the power of the air conditioner 3 during manual operation, 53 is a self-holding switch to prevent the air conditioner 3 from restarting even if no action is taken when the power is reenergized after a power outage, and 54 is the main switch for turning the air conditioner 3 on and off during manual operation. 52 is a self-holding relay that is closed when the control circuit 54 is energized by the operation of the self-holding switch 53; 57 is a self-holding relay that performs functions such as communication with the base unit 1; The child device control circuits 55 and 5B are relay contacts A and B that are remotely controlled by the parent device 1, and thus the child device 2 and the air conditioner 3 are connected by six electric wires.

FIG. 9 is a circuit block diagram of the handset control circuit 57. 58 is the gas leak alarm 30. Operation request switch 2
8 and an external input circuit for connecting the external thermostat 28, 59
is a microcomputer, 60 is an air conditioner connection circuit for connecting the air conditioner 3, 61 is a modulation/demodulation circuit for communicating with the base unit 1, and 62 is an identification number setting circuit for identifying the slave unit 2.

Next, the operation of the air conditioner centralized monitoring system according to the configuration of the above embodiment will be described.

First, initial settings of operating conditions are performed.

As shown in Fig. 1, the base unit 1. Submaster unit Ia,
The slave units 2 are connected to each other by a signal line 4, and each slave unit 2 is connected to an air conditioner 3 one by one. In addition, for each handset 2, an identification number is set for each handset 2 using the identification number setting switch 35, such that, for example, the handset in room A is number 1, and one of the handsets in room B is number 2. At this time, these identification numbers No. 1 and No. 2 correspond to the identification numbers of the operation switch 13 of the base unit 1, respectively. If two air conditioners 3 are installed in one room, as in Department BIH, one
By setting the second machine to No. 2 and the second machine to No. 34, both machines can be controlled by the No. 2 operation switch 13 of the main unit 1. In other words, if the slave unit 2 of the first air conditioner 3 installed in room B is set to number n (0≦n≦31), 2
The slave unit 2 of the second air conditioner 3 is number n+32.

In addition, as shown in FIG. 1, when a sub-base unit 1a is installed in the same system, an identification number is set for this sub-base unit 1a in the same way as for the slave unit 2, and at this time, Submaster unit 1
The identification number set in a cannot be used for the handset 2. The identification number of the sub-base unit 1a can be set to any number from 0 to 32, and it does not matter how many units there are as long as the sub-base unit 1a is 32 or less in this case. However, in this embodiment, there is one sub-base unit 1a, and its identification number is 0. That is, by setting in this way, the identification number setting switch 35 similar to that of the handset 2 in the sub-base unit 1a can be omitted. Note that if this sub-base unit 1a is not installed, the previous number 0 can be used as the identification number of the slave unit 2. Furthermore, after setting the identification number of slave unit 2 in this way, the room temperature card 1 of base unit 1
Write the family name in the corresponding number 7 to make it easier to operate.

Next, in order to enable the base unit 1 to discover a malfunction in the handset 2, it is necessary to inform the base unit 1 of how the handset 2 is installed in the system. switch 20 provided on the slave unit 2.
The initial setting is changed to M (not shown), and the presence or absence of the slave device 2 is set by operating the operation switch 13.

Namely.

Specifically, for example, when trying to set the room with identification number 0, there is only one handset 2 (air conditioner [3)] (the number by m is 0).
When the operation switch 13 is pressed once, the operation command lamp 15 lights up, indicating that there is only one slave unit 2 in room number 0. )
If there are two units, press the operation switch 13 again.
This time, both the operation command lamp 15 and the external control lamp 14 light up, indicating that there are two slave units 2 in room No. 0, and to check for any incorrect settings, etc.
If you press the operation switch 13 one more time, the operation command lamp 1 will turn on.
5 and the external control lamp 14 go out and return to the initial state, it can be confirmed that the settings have been made correctly. In this way, the identification numbers 0 to 31
Perform all settings up to the point. At this time, the operation switches 13 whose identification numbers have no handset 2 installed are left in their initial state.

Further, each of the slave units 2 includes a gas leak alarm 30.
Although the operation request switch 29 and the external thermostat 28 can be connected, it is necessary to inform the base unit 1 that the operation request switch 28 is connected. In this case, in the same way as when setting the installation state of the slave unit 2 described above, switch the selector switch 2o to the gas leak initial setting or external thermostat initial setting (both not shown), and operate the operation switch 13. Let's do it. However, in this case, unlike the initial settings of the slave unit 2, for example, when setting up room number 0, this gas leak alarm 30 etc. is installed only in the slave unit 2 in room number 32. Since it is conceivable that the device may be connected, when the operation switch 13 is pressed three times from the initial state, it is set only to the slave device 2 in room No. 32, and only the external control lamp 14 is lit. In other words, every time the operation switch 13 is pressed, only the slave unit 2 numbered 0 is connected (only the operation command lamp 15 is lit) → slave units 2 numbered O and 32 are connected.
Connected to (operation command lamp 15 and external control lamp 14 are lit) → Connected only to No. 32 slave unit 2 (external control lamp 14
Settings from No. 0 to No. 31 are changed as follows: (Only 15.14 lights up) → If both slave units No. 0 and No. 32 are not connected, both operation command and external control lamps 15 and 14 do not come on). This is what we do.

All initial settings are made in this way, but with the changeover switch 2o returned to its original operating position, each air conditioner 3 will not operate automatically against the user's will. To make it so.

In this embodiment, the simultaneous operation switch 7 is always kept in the OFF state.

That is, FIG. 10 shows a flowchart for realizing the contents of the initial settings. The example shown in FIG. 10 is for the initial settings of the handset, but other initial settings are the same.

In the flowchart of FIG. 10, first, the set state of the changeover switch 20 is determined, and the slave unit is selected.

If it is not the initial setting position, the process moves to the next step, and if it is the child unit initial setting position, the simultaneous operation switch 7 is turned OFF, and then it is determined whether the operation switch 13 has been pressed.

If the operation switch 13 is not pressed,
Once again, the set state of the changeover switch 20 is determined, and if the operation switch 13 is pressed, the counter 0n (n indicates the number of the operation switch 13 that was pressed) inside the microcomputer is slightly incremented by 1. and then On
If the value is 1, the operation command lamp 15 is lit and the G
If the value of n is 2, the external control lamp 14 is also turned on in conjunction with the lighting of this driving command lamp 15, and if the value of Cn is neither 1 nor 2, this value is set to O and the driving command lamp 15 is turned on. ．． Both external control lamps 14 are turned off. After this processing, the value of Cn is transferred to the storage circuit 43, and the initial set state of the changeover switch 20 is determined.

Note that the same operation is performed when changing the initial settings.

Subsequently, after completing the initial settings as described above, nine individual control operations are performed.

First, the changeover switch 20 is set to the operating position (not shown), and the procedure for operating the air conditioners 3 No. 0 and No. 32 in this state will be described.

In this state, as mentioned above, the operation switch No. 0
Each time you press 3, only the operation command lamp 15 turns on, only the external control lamp 14 turns on, and all 9 pumps turn off, so operate the No. 0 operation switch 13 to turn on only the operation command lamp 15. do. Then, by pressing the simultaneous operation switch 7 once, the display lamp 19
lights up, and the modulation/demodulation circuit 61 of the base unit 1 gives a signal to each slave unit 2 numbered 0 and 32 via the signal line 4 to start operation. This procedure is shown in the flowchart of FIG.

That is, first, the state of the n-th driving command lamp 15 is determined. If the operation command lamp 15 is lit, it is determined whether the -simultaneous operation switch 7 is in the ON state, and if it is in the ON state, it is further determined whether the n-th air conditioner 3 is already in the operating state. If it is in operation, the process ends; if it is not in operation, relay contact A55 is connected to slave unit 2.
．． After giving a signal to turn on both relay contacts B5B, only relay contact B58 is turned off, and the process ends. Further, when the operation command lamp 15 is not lit or when the simultaneous operation switch 7 is not ON, relay contact A55. Both relay contacts 85B are turned off to complete the process.

In this way, the operation of the air conditioner 3 can be remotely controlled, and the operation of the air conditioner 3 by the opening and closing operations of the relay contacts A55 and 85B of the slave unit 2 in this case will be described later. In the case of this embodiment, a gas heater is used as an example, but relay contact B5B can be omitted if other types of air conditioners can be operated and stopped by only relay contact A55. It becomes even easier. Further, as is clear from this flowchart, it is also possible to start and stop the operation by first turning on the simultaneous operation switch 7 and then operating the operation switch 15. Furthermore, since the simultaneous operation switch 7 is related to all handsets 2, the simultaneous operation switch 7 is turned on and off.
By operation, all the air conditioners 3 can be operated or stopped at the same time.

Next, a case will be described in which the air conditioner 3 is controlled by giving commands to the base unit 1 from the outside using the EIA-R3232C standard interface.

First, connect the EIA-R5232C to the connector 21 of the EIA-RS232C building semi-interface of the main unit I.
A computer system with a standard interface is connected, and the communication method (for example, baud rate, presence or absence of parity, etc.) is set using the setting switch 22.

In this state, commands from the external device are input to the standard interface circuit 37 and processed by the microcomputer 40. A flowchart for executing the commands by the microcomputer 40 is shown in FIG.

That is, the command 2 input to this standard interface circuit 37, for example, the command to operate slave unit 2 numbered 0, is "Sn" (n is any number from θ to 31).
This input command is decoded by the microcomputer 40. Then, when this decoded command is to operate the n-th slave unit 2 and the n-th external control lamp 14 is lit (this can be set using the operation switch 13), the n-th It processes the slave unit 2 to operate, and at the same time lights up the n-th operation command lamp 15. Therefore, at this time, the operation command lamp 1
5 and external control lamp 14 are both turned on. Furthermore, if the decoded command is to stop the n-th slave unit 2 and the n-th external control lamp 14 is lit, processing is performed to stop the n-th slave unit 2. At the same time, the nth operation command 7:7'15 is turned off.

Using the EIA-R3232C standard interface from the outside, it is possible to control the operation and stop of the handset 2, but even if it is controlled from the outside, by operating the operation switch 13, the external control lamp 14, it is also possible to remove this external control and switch to control by the base unit 1.

Next, power failure compensation for the memory circuit 43 in the base unit 1 will be described.

In the base unit 1, the initial settings and operation command status are stored in the RAM of the storage circuit 43. Therefore, if the power supply is stopped due to a power outage, the data stored in this RAM will be lost. When you turn on the power again, you will have to start over from the initial settings again. Therefore, in order to solve this problem, the battery 47 compensates and protects the contents stored in the memory circuit 43.

As you can see, 5V is normally used as the power supply for the memory circuit 43, and this is supplied from the stabilized power supply 45.
The voltage of the battery 47 is about 3.5V, which is lower than the voltage of the stabilized power supply 45, so that the stored contents can be retained. Now, if the commercial power supply is stopped due to a power outage or the like and the voltage of the stabilized power supply 45 drops below the voltage of the battery 47, the power supply to the memory circuit 43 is automatically switched to the battery 47 by the switching circuit 48. The stabilized power supply 45 continues to retain the memory contents and is reenergized.
When the voltage of the battery 47 becomes higher than that of the battery 47, the power supply from the stabilized power supply 45 is restored again.

Furthermore, if the battery 47 is exhausted due to repeated power outages, the battery 47 will no longer be able to compensate for the power outage, so the voltage of the battery 47 is constantly monitored by the comparator circuit 46, and the voltage of the battery 47 is maintained at a constant voltage value 9, for example, 3. When it drops to Ov, it is determined that the battery 47 has reached the end of its lifespan, and this is notified to the administrator. That is, specifically, the comparison circuit 48
The output is inputted to the microcomputer 4°, and the output causes the light emitting part of the illuminated power switch 5 to flash and display.

Next, the function of the key lock switch 6 will be described.

This key lock switch 8 is provided to prevent the operation switch 13 from being operated by mistake, and is turned on after the operation switch 13 is set to operate or stop the air conditioner 3. Therefore, even if a person other than the administrator accidentally touches the operation switch 13 afterwards, the microcomputer 40 can simply ignore that input if the keylock switch 6 is ON, and the input will be ignored by the microcomputer 40. This makes it possible to prevent the air conditioner 3 in the room from operating.

However, in this case, only the key inputs from the operation switch 13 are ignored, and the key inputs from other switches are valid. This means that if a key other than the operation switch 13 is pressed, all air conditioners 3 will stop even if it is operated by mistake, and since this can be detected reliably, it will be easier for administrators to use it if they do not ignore it. It is from. Note that when this key lock switch 6 is turned on, the display lamp 1
8 is turned on, and it can be canceled by pressing the key lock switch 6 again.

The above is the operation method for the base unit 1.

Next, the operations of the handset 2 and the air conditioner 3 will be described.

As described above, the air conditioner 3 has a function for selecting and switching whether to operate the air conditioner 3 independently (hereinafter referred to as manual operation) or remotely controlled by the base unit 1 (hereinafter referred to as automatic operation). An automatic/manual changeover switch 51 is provided. Namely.

In FIG. 8, contacts e and g of this automatic/manual changeover switch 51 are for automatic operation, and contacts f and h are for manual operation.

First, a case where the air conditioner 3 is manually operated will be described.

Select the automatic/manual changeover switch 51 to the manual operation side,
After turning on the main switch 50 for this manual operation, by temporarily turning on the self-holding switch 53,
Even if the control circuit 54 is energized and the self-holding relay 52 is turned on, and the self-holding switch 53 is subsequently turned off, the self-holding by the self-holding relay 52 continues to energize the control circuit 54. With this operation, the air conditioner 3 can be operated manually, and this self-holding can be confirmed by applying a commercial power supply of 100 V between a and d of the slave unit control circuit 57. Notify handset 2.

Furthermore, by turning off the main switch 50, power to the control circuit 54 is cut off, the self-holding relay 52 is also turned off, and the air conditioner 3 is naturally stopped.

For example, if an abnormality such as a misfire occurs while the air conditioner 3 is in operation, the control circuit 54 turns off the self-holding relay 52 to cut off the power supply to itself.

Next, a case will be described in which the air conditioner 3 is automatically operated.

By selecting the automatic/manual changeover switch 51 to the automatic operation side, the application of 100 V of commercial power between a and c of the slave unit control circuit 57 notifies the slave unit 2 that this mode is automatic operation. . In this state, relay contact A55 and relay contact B5B are
If both are turned on at the same time, 1. The control circuit 54 is energized and the self-holding relay 52 is turned on as in the case of manual operation.
Even if the relay contact 858 is turned off after that, the control circuit 54 is maintained by the self-holding by the self-holding relay 52.
The air conditioner 3 can be operated automatically by continuing to be energized, and at the same time, a commercial power supply of 100 V is applied between a and d of the slave unit control circuit 57, indicating that this self-maintenance is applied. Notify handset 2. Similarly, if an abnormality such as a misfire occurs during operation, the control circuit 54 turns off this self-holding relay 52 and cuts off the power supply to itself.

That is, in the handset 2, by monitoring the voltage between a and 0 of the handset control circuit 57, it is possible to determine whether the air conditioner 3 is in automatic operation or manual operation, and similarly. By monitoring the voltage between a and d, it can be determined whether or not the air conditioner is energized regardless of the operation.

Next, the external thermostat 2 for controlling the temperature of the air conditioner 3 is attached to the slave unit 2.
The case where 8 is connected will be described.

At this time, the sky hat 1 must be set to automatic operation, and the signal from the external thermostat 28 attached to the handset 2 is input to the microcomputer 59 via the external input circuit 58, and then sent from the modulation/demodulation circuit 61 via the signal line 4. The base unit 1 receives the signal and sends the signal to the slave unit 2 according to the program shown in the flowchart shown in FIG.

In other words, as is clear from this flowchart,
When the external thermostat 28 signal is input from the nth handset 2 (n is 0 to 83 in this system) to the parent 41j1, the external thermostat 28 is input to the nth handset 2 in the first initial setting. It is determined whether or not the thermostat 28 is installed, and if the installation of this external thermostat 28 is instructed, then the operation command lamp 15 number n (n-32 if n>31) lights up. If the operation command lamp 15 is lit, the simultaneous operation switch 7 is further turned on.
Check whether it is turned on. If the simultaneous operation switch 7 is ON, the external thermostat 28 is turned ON to operate the air conditioner 3, and if it is OFF, the air conditioner 3 is stopped. No processing is performed when it does not correspond to either command or -simultaneous operation.

In addition, we will explain how to monitor the operation and stoppage of Sky Group 1.

First, if one air conditioner 3 is installed in one room, check whether this air conditioner 2 is being operated or not.
The voltage between a and d of the slave unit control circuit 57 (commercial power supply 100V is applied during operation, Ov when stopped) is determined by the air conditioner connection circuit BO of the slave unit 2, and this is determined by the microcomputer of the slave unit 2. 59, and also transmits it to the base unit 1 via the communication line 4 by the modulation/demodulation circuit 61. Then, in the base unit 1, this signal is received by the modulation/demodulation circuit 38, judged by the microcomputer 40, and the n-th slave unit 2 (in this case, n is θ ~
31 (32 to 63 will be described later) is in operation, the n-th monitoring lamp 16 is turned on, and if it is stopped, it is turned off.

Next, when two air conditioners 3 are installed in one room, the process is not as simple as described above, but as shown in the flowchart of FIG. 14. In other words, if the operation status signal of the air conditioner 3 of No. n and No. n+32 is input, and the operation command lamp 15 of No. n+ The monitoring lamp 16 of No. n is turned on only when both handsets 2 of No. 32 are in operation, and is turned off at other times. On the other hand, when the operation command lamp 15 of number n is not lit, this number
n+ n only when both slave units 2 of No. 32 are stopped
The number monitoring lamp 16 is turned off, and if either one is in operation, the monitoring lamp 16 is turned on.

Furthermore, based on the information from the handset 2, the base unit 1 displays the location of the abnormality and the type of abnormality when the following abnormality occurs in the system, and also issues an alarm.
The function to call is given.

Namely.

■, Communication abnormality alarm when communication with handset 2 is not possible.

■ An abnormal operation alarm when the air conditioner 3 does not start even though it was tried to start, or when it did not stop even though it tried to stop it.

@, When the gas leak alarm 30 detects a gas leak abnormality,
and a gas leak alarm when the gas leak alarm 30 is out of order or when the communication line 4 connecting the handset 2 and the gas leak alarm 30 is abnormal.

(2) Although different from an alarm, a driving request call notifies that a driving request has been made by turning on the driving request switch 28 connected to the handset 2.

There are four items.

If any abnormality occurs in any of these four items,
If the abnormality occurs in the handset 2 numbered n or n+32, the monitoring lamp 16 of number n is blinked, and each alarm lamp corresponding to the content of the abnormality is turned on. In other words, the communication alarm lamp 11 is in the case of ■, and the operation alarm lamp 10 is in the case of ■. When ■, the gas leak alarm lamp9. In the case of @, the operation request lamps 12 are respectively turned on, and at the same time, an alarm is issued from the alarm sound generation circuit 44 via the speaker 8 to the administrator.

In the case of this alarm sound, it is also possible to differentiate each abnormal condition by changing the sound range, etc.
Since each abnormal condition is classified by each lamp display, there is no need to use such a method, and if it is necessary to classify the alarm contents again, 2. For example, if there is a gas leak alarm, etc. This can be used to distinguish between when a leak is detected and when a failure occurs.

Furthermore, the display, alarm, and call of the above-mentioned abnormal conditions are of course required when one air conditioner 3 is installed in one room.
Even when two air conditioners 3 are installed in a room, the process can be executed when the operation commands and monitoring results are different depending on the flowchart shown in FIG. 14.

In the above description of the embodiment, a gas heater has been described as an example of the air conditioner 3, but the present invention can be easily applied to centralized monitoring of other air conditioners, electrical equipment, and the like. In addition, in the embodiment, the communication line 4 was used for communication between the base unit 1 and the slave unit 2, but
For example, a power line or the like may be used.

〔Effect of the invention〕

As detailed above, according to the present invention, one or more air conditioners having terminal control devices are installed in each of a plurality of rooms, and each of these terminal control devices is centrally controlled by a central control device. In a centralized monitoring device for air conditioners, the central control device is provided with a memory circuit that stores the initial conditions and operating conditions set for each air conditioner, terminal control device, etc.; In order to supply power, in addition to a stabilized power source using commercial power, batteries are installed as a power source to compensate for power outages,
In addition, we have installed a switching circuit that switches the power supply to the memory circuit from a stabilized power source to the battery when a power interruption such as a power outage is detected, so the memory contents of the memory circuit are retained even when the power is interrupted such as a power outage. By protecting the stored contents, there is no need to set these conditions again even if the power is turned on again, and the device can be used effectively. It's something you get.

[Brief explanation of drawings]

Fig. 1 is a system configuration diagram showing an embodiment of the air conditioner centralized monitoring device according to the present invention, and Figs. 2 and 3 are external views showing the operating section (front) and rear side of the same main unit, respectively. , Figure 4 is a block diagram of the configuration of the same terminal side, and Figure 5 (
a) and (b) are external views of the above handset, Fig. 6 is a circuit block diagram of the above main unit and sub-main unit, Fig. 7 is a block configuration diagram showing details of the above power supply circuit, and Fig. 8 is the same as above. A circuit diagram showing the connection between the slave unit and the air conditioner, Figure 9 is a circuit block diagram of the slave unit control circuit as above, Figure 10 is a flowchart for realizing the contents of the initial settings as above, and Figure 11 is the same as the parent unit as above. FIG. 12 is a flowchart showing the procedure for starting operation from the unit to each child unit, and FIG. 12 is a flowchart showing the procedure for controlling the air conditioner to start and stop by giving commands to the parent unit from the outside using the same EIA-RS232C standard interface. , Figure 13 is a flowchart showing the control procedure when an external thermostat for controlling the temperature of an air conditioner is connected to the same child unit as above, and Figure 14 is the same as above.Two air conditioners are installed in one room. 2 is a flowchart showing a procedure for control when l...Main unit (central control unit that controls the entire system), 1a...sub-base unit (sub-central control unit), 2...
・Slave unit (terminal control device), 3...Air conditioner (air conditioner), 4...Communication line, 5...Power switch, 6
...Key lock switch? --- Simultaneous operation switch, 8... Alarm speaker, 8... Gas leak alarm lamp, 10... Operation alarm lamp, 11...
...Communication alarm lamp, 12...Operation request lamp, 1
3...operation switch, 14...external control lamp, 15...operation command lamp, 16...monitoring lamp, 20...changeover switch, 21...for standard interface Connector, 22...setting switch, 28...external thermostat, 28°...operation request switch, 30...gas leak alarm, 35...
・Identification number setting switch, 38.61...Modulation/demodulation circuit, 38...Display circuit, 40.59...Microcomputer, 41...Switch input circuit, 42
...Power supply circuit, 43...Memory circuit, 44...
・Alarm sound generation circuit, 45... Stabilized power supply, 46...
・・Comparison circuit, 47・・Battery for power failure compensation, 48・
...Switching circuit, 5o...Main switch, 51...
...Auto/manual changeover switch, 52...Self-holding relay, 53...Self-holding switch, 54...
Control circuit, 57... Child unit control circuit, 58... External input circuit, 60... Air conditioner connection circuit, 62...
・Identification number setting circuit. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masuo Oiwa Fig. 7 Fig. 8 L-J Fig. 12 Procedural amendment (method) ■ Phase 5 October 19, 2, Name of invention Central monitoring device for air conditioners 3 Make amendments To Representative Hitoshi Katayama Part 5 Date of amendment order September 25, 1980 (shipment date) 6 Drawing subject to amendment 7 Contents of amendment Figure 5 of the drawing will be corrected as shown in red on the attached sheet. 8 List of attached documents Corrected drawings in red 1 copy (Torra procedure amendment (voluntary) 2. Name of the invention Central monitoring device for air conditioners 3. Name of the person making the amendment Name (601) Jinhachi Katayama, Representative of Mitsubishi Electric Corporation Section 4, Agent 5, Detailed explanation of the invention column 6 of the specification subject to amendment Correct "other switches" in lines 2-3 on page 5 of the specification to be amended to "this switch 5".

Claims (2)

[Claims] (1) Concentration of air conditioners in which one or more air conditioners with terminal control devices are installed in each of multiple rooms, and each of these terminal control devices is centrally controlled by a central control device. In the monitoring device, the central control device includes a storage circuit that stores initial conditions, operating conditions, etc. set for each air conditioner, terminal control device, etc.;
At least a stabilized power source using a commercial power source for supplying power to the memory circuit, a battery as a power source for compensating for power outages, and means for detecting power outages of the commercial power source. and a power supply circuit consisting of a switching circuit that switches the power supply to the memory circuit from the stabilized power supply to the battery based on this detection, and in the event of a power outage of the commercial power supply, the power supply is compensated by the battery, and the memory circuit A central monitoring device for an air conditioner, characterized in that the memory contents of the air conditioner can be protected at all times. (2) Make the voltage of the stabilized power source higher than the voltage of the battery,
2. The centralized monitoring device for air conditioners according to claim 1, wherein a comparison circuit that compares and outputs each of these voltages is used as a means for detecting a power outage of the commercial power supply.