JPS60253752A - Centralized supervisory device for air conditioner - Google Patents

Abstract

PURPOSE:To enable the presence or absence of a gas leakage alarm fitted to each terminal controller to be set on a central controller, by a method wherein operating switches corresponding to each terminal controller are utilized after switching the system condition from an operative or stopped state to an initialized state. CONSTITUTION:In a centralized supervisory device for air conditioner, one or a plurality of air conditioners 3 having the terminal controller 2 to be operated concurrently are provided in each of a plurality of rooms, and each of the terminal controllers 3 is centralizedly controlled by the central controller 1, 1a. In the device, each of the terminal controllers 2 is fitted with the gas leakage alarm, which the central controller 1, 1a is provided with respective operating switches 13 for commanding the operation or stoppage of the corresponding air conditioners 3 through the terminal controllers 2, and changeover switches for changing over the system to the operative, stopped or initialized state. The presence or absence of the gas leakage alarm fitted to each of the terminal controllers can be set on the central controller 1, 1a by operating the corresponding operating switch 13 in the condition wherein the changeover switch is changed over from the operating or stopping side to the initialized side. Accordingly, a setting operation is easy to perform, and possibility of danger in operations can be eliminated.

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. In a central monitoring device for air conditioners in which the device is centrally controlled by a central control device, a device for setting the central control device to determine whether or not a gas leak alarm is installed on each terminal control device. This is related to.

[Traditional technique]

In conventional air conditioner centralized monitoring equipment of this type, when setting whether or not to install a scum leakage alarm on each terminal control unit for the central control unit, it is necessary to set the case cover of the central control unit. This is done by operating the initial setting switch of the built-in control circuit after removing it. However, inside the case of the central control unit, the charged parts that are energized by the commercial power supply are exposed, so opening the case cover like this is in itself a hassle. Not only are they dangerous, but they also have the disadvantage of causing uncontrollable equipment or malfunctions due to touching non-essential switches during operation, as well as complicating operations. Met.

[Summary of the invention]

In view of these conventional drawbacks, the present invention uses a changeover switch to switch the system state from the running/stop position to the initial setting side, and then utilizes a running switch provided corresponding to each terminal control device to switch the system status to the initial setting side. At the time of initial setting, it is possible to set whether or not a gas leak alarm is attached to each terminal control device in the central control device.

[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 conditioner m (hereinafter referred to as an air conditioner) 3 under the control of the master unit 1 or the secondary mirror a1a, and 4 is a master unit 1. 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 to F are the rooms in which the air conditioner 3 is installed, and the air conditioner 3 may be installed with only one unit or with multiple units depending on its air conditioning capacity and the volume and size of the room. There are cases where it is 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 various operation switches, 2 indicator lamps, 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 operation to the room side 1, and when it is off, it instructs the air conditioner Ia3 to stop. Indicates that the

Reference numeral 14 is an external control lamp, which allows the operation switch 1 to be
Lights up when a function such as 3 is being performed on an external computer system. 18 is a monitoring lamp, air conditioner 3
Lights up when the car is being driven. 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., and the number displayed on this cart 17 corresponds to each of the 32 operation switches 13 in this embodiment. identify.

Furthermore, 7 is a simultaneous operation switch, and by operating this switch 7, only the air conditioners 3 that have been set to the operation state S by the operation switch 13 can be operated at the same time, and an indicator lamp 18 indicates that they are in operation state. The light will be displayed. 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 8 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 warning 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 9. Operation alarm lamp 10. Communication alarm lamp 11. When any 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 selector switch for selecting the system status,
21 is a connector for connecting the EIA-R3232C compliant standard interface, 22 is a setting switch for setting the communication method of the standard interface, etc., 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 ground terminal for grounding, 26 is a 2-day type outlet provided to make it convenient to use other electrical equipment at the same time, and 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 28. 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 2B, 34 is a connector for connecting the signal line 4, 3
Reference numeral 5 designates an identification number setting switch for setting a slave device identification number, and 36 designates a mounting terminal to which an operation request switch 28 is connected.

6th r! ! J is a circuit block diagram of the master unit 1 and the sub-master unit 1a, with a microcomputer 40 as the center, a memory circuit 43 for storing programs of the microcomputer 40, and a standard interface compliant with EIA-R5232C for connection. standard interface circuit 37, a modulation/demodulation circuit 38 that performs FSK modulation/demodulation for communicating with the child@2, and a display circuit 39 that flashes display lamps such as the external control lamp 14 and the operation command lamp 15.
, a switch input circuit 41 for inputting switches such as the operation switch 13, an alarm sound generation circuit 44 for generating the alarm sound, and a power supply circuit 42 for supplying 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 46 is connected to the microcomputer 40.

FIG. 8 is a circuit diagram showing the connection between the handset 2 and the air conditioner 3, and the air conditioner 3 is taken as an example of a gas heater. 48
5 is a power plug for supplying a commercial battery; 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 that prevents the air conditioner 3 from running stale even if no action is taken when the power is reenergized after a power outage, and 54 is the air conditioner @3. 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 56 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 foreign communication thermometer 28, 58
60 is an air conditioner connection circuit for connecting the air conditioner 3; 61 is a modulation/demodulation circuit for communicating with the parent #j&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 one air machine 3 is connected to each slave unit 2. In addition, for each child ta2, the identification number setting switch 35 allows each child 2 to have one child device of section JfiA, for example.
The identification numbers are set such that one of the slave units in room B is number 2, and at this time, these identification numbers 1 and 2 are the identification number of the operation switch 13 of base unit 1. Each will be supported. When two air conditioners 3 are installed in one room, as in Part NB,
By setting the first device to No. 2 and the second device to No. 34, both devices can be controlled by the No. 2 operation switch 13 of the parent device 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 child 4112 of the second air conditioner a3 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 is the child I! 2 cannot be used. 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 sub-base units 1a there are as long as it is 32 or less. However, in this embodiment, there is one sub-base unit 1a,
Let its identification number be number 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. In addition,
If this secondary mirror Iala is not installed, the previous number 0 can be used as the identification number of the slave device 2. Furthermore, after setting the identification number of the handset 2 in this manner, the family name is written in the corresponding number on the family name card 17 of the base unit 1 to facilitate operation.

Next, in order for the base unit 1 to be able to discover a malfunction in the handset 2, it is necessary to inform the parent unit how the handset 2 is installed in the system. The changeover switch 20 provided in the slave unit 1 is switched to the initial setting position (not shown) of the slave unit 2, and the presence or absence of the slave unit 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 separate number is
0 only), press the operation switch 13 once.
Operation command lamp 15 lights up, and slave unit 2 in room number 0
indicates that there is only one slave unit 2 (room side 1), and if there are two slave units 2 (room side 1), pressing the operation switch 13 again will turn on both the operation command lamp 15 and the external control lamp 14. This shows that there are two slave units 2 in room No. 0, and if you press the operation switch 13 once again to check for setting errors, the operation command lamp 1 will light up.
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. Incidentally, at this time, the operation switches 13 whose identification numbers have no handset 2 installed are left in the initial state.

Each slave unit 2 also includes a waste leakage alarm 30.
Although the operation request switch 28 and the external thermostat 28 can be connected, it is necessary to inform the main device 1 that the operation request switch 28 and the external thermostat 28 are 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 20 to the initial setting for waste leakage or the initial setting for external thermometer (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, even though the settings are made for 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, each time you press the operation switch 2ch 13, it connects only to slave unit 2 numbered 0 (
Only the operation command lamp 15 is lit) → Connected to slave units 2 No. 0 and 32 (The operation command lamp 15 and external control lamp 14 are lit) → Connected only to slave unit 2 No. 32 (External control lamp 1
Only 4 lights up) → both handsets 0 and 32 are not connected, and both operation command and external control lamps 15 and 14 don't light). This is to make the settings.

All initial settings are made in this way, but with the changeover switch 20 returned to the original operating position, each air conditioner 3 will not operate automatically against the user's will. In order to do this, 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 the same applies to other initial settings.

In the flowchart of FIG. 10, first, the set state of the changeover switch 20 is determined, and if it is not at the initial setting position of the slave unit, the process moves to the next process, and if it is at the initial setting position of the slave unit, the simultaneous operation switch is switched? is turned off, and then it is determined whether or not the operation switch 13 has been pressed.

If the operation switch 13 is not pressed while rowing,
Once again, the set state of the changeover switch 20 is determined, and if the operation switch 13 is pressed, the value of the counter 0n (n indicates the number of the operation switch I3 that was pressed) inside the microcomputer is set to 1. plus C
If the value of n is 1, the operation command lamp 15 is lit and C
If the value of t+ 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 0 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 described above, each time the No. 0 operation switch and H 13 are pressed, only the operation command lamp 15 is turned on, only the external control lamp 14 is turned on, and both 9 and 9 pumps are turned off. Operate the switch 13 so that only the operation command lamp 15 lights up. Then, by pressing the simultaneous operation switch 7 once, the display lamp 1
8 lights up and the modulation/demodulation circuit 61 of the base unit 1 connects the signal line 4.
A signal to start operation is given to each slave device 2 No. 0 and No. 32 via. 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 both relay contacts 85B ON, only relay contact B5B 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 B5B are turned OFF to complete the process.

In this way, the operation of the air conditioner R3 can be remotely controlled, and the operation of the air conditioner 3 by the opening and closing operations of the relay contacts A55 and B5fi of the slave device 2 in this case will be described later. In the case of this embodiment, a gas heater is used as an example, but if it is another type of air conditioner that can be started and stopped only by relay contact A55, relay contact B5B can be omitted, making it even simpler. become. 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-R5232C standard interface.

First, connect the EIA-R5232C to the connector 21 of the EIA-R3232C standard 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 harness, 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 9 that is input to this standard interface circuit 37, for example, a command to operate slave unit 2 with number 0, is input as ll5nII (n is any number from 0 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 Handset 2
At the same time, the n-th driving command lamp 15 is turned on. Therefore, at this time, both the driving command lamp 15 and the external control lamp 14 are turned on. Further, the decoded command is to stop the n-th slave unit 2, and similarly the n-th external control lamp 1 is to be stopped.
4 is lit, processing is performed to stop this n-th slave device 2, and at the same time, the n-th driving command lamp 15 is turned off.

Using the EIA-R5232C 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 main unit 1, the initial settings and operation command status are stored in the RAM of the memory 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 go through 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.

Here, 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, etc., the power f#A47 will not be able to compensate for the power outage, so the voltage of the battery 47 is constantly monitored by the comparison circuit 48, and the voltage of the battery 47 is kept at a constant voltage value 9, for example. 3. When the voltage drops to OV, it is determined that the battery 47 has reached the end of its lifespan, and the administrator is notified of this. That is, specifically, the output of the comparison circuit 46 is inputted to the microcomputer 4°, and the output is used to cause the light emitting section of the illuminated power switch 5 to flash and display.

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

This key lock switch 6 is used to prevent the operation switch 13 from being operated by mistake, and is used after the operation switch 13 is set to operate or stop the air conditioner 3. Therefore, even if, for example, a person other than the administrator accidentally touches the operation switch 13, the microcomputer 40 can ignore the input if this key lock switch is ON, and there is no need to accidentally touch the operation switch 13. 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 8 is turned on, the indicator lamp 1
8 is turned on, and it can be canceled by pressing the key switch 8 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, the contact etg side of this automatic/manual changeover switch 5I is for automatic operation, and the f and h sides are for manual operation.

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

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 the fact that this self-holding is applied can be confirmed by applying a commercial power supply of 100 V between a and d of the slave unit control circuit 57. Let me know.

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

For example, if an abnormality such as a misfire occurs while the air conditioners m and 3 are 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, a commercial power supply of 100 V is applied between d and 0 of the slave unit control circuit 57, thereby informing the slave unit 2 that this mode is automatic operation. . In this state, relay contact A55 and relay contact 85B are controlled by base unit 1.
When both are turned on at the same time, the control circuit 54 is energized and the self-holding relay 52 is turned on as in the case of manual operation.Afterwards, even if relay contact B5B is turned off, self-holding by this self-holding relay 52 The control circuit 54 continues to be energized and the air conditioner 3 can be operated automatically, 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, and this self-maintenance is applied. Notify handset 2 that the 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 c 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, be sure to set the air conditioner 3 to automatic operation, and send the signal from the external thermostat 28 picked up by the slave unit 2 to the external input circuit 58.
This is taken into the microcomputer 59 from the modulation/demodulation circuit 61 and transmitted to the base unit 1 via the signal line 4.The base unit 1 receives the signal and sends the signal to the child a2 according to the program shown in the flowchart shown in FIG.

In other words, as is clear from this flowchart,
Child number n 41!2 (n is 0 to 63 in this system)
When inputting the signal of the external thermostat 28 from the parent @i, first, in the initial setting, it is determined whether the external thermostat 28 is attached to this n-th slave unit 2, and this external thermostat 28 is If the installation of the thermostat 28 is instructed, then it is determined whether or not the operation command lamp 15 number n (n-32 if n>31) is lit. When the
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, a method for monitoring the operation and stopping of the air conditioner Ia3 will be described here.

First, when one air conditioner Ia3 is installed in one room, whether or not this air conditioner 2 is operating is determined by checking the voltage between a and d of the slave unit control circuit 57 (when in operation, the voltage is When 100V is applied and the air conditioner is stopped, Ov) is determined by the air conditioner connection circuit 60 of the slave unit 2, and this is notified to the microcomputer 59 of the slave unit 2. to communicate. Then, in the base unit 1, this signal is received by the modulation/demodulation circuit 38, judged by the microcomputer 40, and determined by the n-th slave unit 2 (in this case, n is θ).
- 31, and 32 to 63 will be described later) is in operation, lights up the n-th monitoring lamp 16, and stops fE.
If inside, turn off the light.

Next, when two air conditioners Ia3 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. The monitoring lamp 16 of number n is turned on only when children 41!2 of number n+32 are both driving,
At other times, turn off the lights. On the contrary, when the operation command lamp 15 of number n is not lit, it is only when the slave units 2 of number n and number n+32 are both stopped and in use.
The number monitoring lamp 18 is turned off, and if either one is in operation, the monitoring lamp 1B 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 the gas leak alarm 30 is malfunctioning, or the handset 2 and the gas leak alarm 30. Gas leak alarm when there is an abnormality in the communication line 4 connecting the

(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 29 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 this method.9 For example, when it is necessary to classify the alarm contents again, 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 W machine 3 is installed in one room.
Even when two indoor units 1 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 the central control device. In a central monitoring device for air conditioning equipment that is controlled, the system status is operated using a changeover switch.

Switch from the stop 1 position side to the initial setting side, and in this state, operate the corresponding air conditioner via each terminal control device.
By using the operation switch for instructing to stop, the central control unit can be set to determine whether or not to install a gas leak alarm on each terminal control unit during this initial setting. When making this setting, there is no need to open the central control unit's casing force/height one by one.
Therefore, the setting operation is simplified, the danger of the work can be eliminated, and the causes of failures and the like associated with the work can be eliminated.

[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-R8232C 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 adapter, and Figure 14 is the same as above. Two air conditioners are installed in one room. 3 is a flowchart showing a procedure for control when 1... Main Ia (central control device that controls the entire system), 1a... Sub-main device (sub-central control device), 2...
... slave unit (terminal control device), 3 ... air conditioner (air conditioning 1, 4 ... communication line, 5 ... power switch,
6...Key lock switch, 7...-simultaneous operation switch, 8...Alarm speaker, 9...Gas leak alarm lamp, 10...Operation alarm lamp, 11...
...Communication alarm lamp, 12...Operation request lamp,
13... Operation switch, 14... External control lamp, 15... Operation command lamp, 18... Monitoring.
Lamp, 20... Changeover switch, 21... Connection connector for standard interface, 22... Setting switch, 28... External thermostat, 28... Operation request switch, 30... ...Gas leak alarm, 35.
...Identification number setting switch, 38.81...Modulation/demodulation circuit, 39...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, 4B
... Comparison circuit, 47 ... Battery for power failure compensation, 4
8...Switching circuit, 50...Main switch, 51
...Auto/manual changeover switch, 52...Self-holding relay, 53...Self-holding switch, 54...
...Control circuit, 57...Slave 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 Figure 7 Figure 8 Figure 9 Figure 121 ¥1 Figure 13 Procedural amendment (method) % formula % 1. Indication of case Patent application 1114822/1982, Name of invention Air conditioner Centralized monitoring device 3. Person making the amendment: September 25, 1980 (shipment date) 6. Drawing subject to amendment 7. Details of the amendment Figure 5 of the drawing will be corrected as shown in red on the attached sheet. 8 Catalog of attached documents Corrected red drawings 1 copy Figure 5 (4) Procedural amendment (voluntary) 1. Indication of case Japanese Patent Application No. 59-111482 3. Relationship with the case of the person making the amendment Patent applicant address Tokyo 2-3 Marunouchi Sara-chome, Chiyoda-ku, Miyako Name (6
01) Mitsubishi Electric Co., Ltd. Representative Hitoshi Katayama Department 4, Agent address 2-3-5 Marunouchi Sara-chome, Chiyoda-ku, Tokyo Column a for detailed explanation of the invention in the specification to be amended Details of the contents of the amendment On page 5, lines 12-13, "other switches" is corrected to "this switch 5."

Claims (3)

[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, a gas leak alarm is attached to each terminal control device, and the central control device includes respective operation switches for instructing the corresponding air conditioners to operate or stop via each terminal control device. and,
' A changeover switch is provided for switching the system to a run, stop, or initial setting state, and when the switch is switched from the run/stop control side to the initial setting side, the central control unit is activated by operating each of the operation switches. A central monitoring device for an air conditioner, characterized in that it is possible to set whether or not a gas leak alarm is attached to a corresponding terminal control device. (2) For communication between the central control device and each terminal control device,
The centralized monitoring device for air conditioners according to claim 1, characterized in that a dedicated communication line is used. (3) For communication between the central control device and each terminal control device,
The centralized monitoring device for air conditioners according to claim 1, characterized in that a power line is used to supply power to each device.