JPS60253753A - Centralized monitoring device for air conditioner - Google Patents

Abstract

PURPOSE:To contrive elimination of mistakes in manual operation according to a time program, by a method wherein operations and stopping of individual terminal controllers and air conditioners are controlled by an external microcomputer system or the like in accordance with a predetermined program. CONSTITUTION:In a centralized supervisory device for air conditioners, one or a plurality of air conditioners 3 having the terminal controller 2 in common are provided in each of a plurality of rooms, and each of the terminal controllers is centralizedly controlled by a central controller 1, 1a. In the device, the central controller 1, 1a is provided with a standard interface circuit capable of being connected to an external microcomputer system or the like, and the operations and stopping of the terminal controllers 2 and the air conditioners 3 are controlled through a central controlling circuit by controlling signals inputted from the external microcomputer system or the like through the interface circuit. Accordingly, the operation and stopping of the air conditioner in each of the rooms can be automatically controlled by the external microcomputer system in accordance with the program, and it is possible to eliminate mistakes such as forgetting to turn OFF the power source.

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 equipment is centrally controlled by a central control device, and an external microcomputer system etc. controls the operation and stopping of the air conditioner through the central control device and terminal control device. This relates to a device that allows the user to perform the following operations.

[Traditional technique]

Generally, in an air conditioner centralized monitoring device, in a specific case where the device is applied to a centralized air conditioning system such as each classroom of a school, the control pattern thereof is often made constant. Conventionally, in order to create this type of centralized air conditioning system for schools, etc., the administrator had to perform manual/off operations such as predetermined operation switches according to the operation schedule based on this electrified control pattern. However, operations based on such a predetermined time program may require a certain degree of familiarity on the part of the administrator, which may lead to mistakes in the operations, which is undesirable.

[Summary of the invention]

In view of these conventional drawbacks, the present invention provides a centralized monitoring device for air conditioners, in which control of each terminal control device, operation, stop, etc. of the air conditioner is controlled by an external microcomputer system, etc. It is designed to be executed according to a predetermined program.

[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 is under the control of the main unit 1 or the secondary mirror 511a,
A terminal control device (hereinafter referred to as slave unit) that operates an air conditioner (hereinafter referred to as air conditioner) 3, 4 is a parent unit 1. This is a communication line such as a coaxial cable that transmits signals between the sub-master device 1a and the child Ia2. In addition, in the figure, A-F is a room in which the air conditioner 3 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.

Figure 2 is an external view showing the operation unit (front) of the parent #&1, which is used to perform all operations such as starting and stopping the room side 1 installed in each room. It consists of various operation switches, 9 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 air conditioner 3 to operate, and when it is off, it instructs the air conditioner 3 to stop. Show that you are giving instructions.

Further, 14 is an external control lamp, and the operation switch 13 is controlled by the EIA-R5232C compliant tank weight interface.
Lights up when an external computer system is performing a function such as 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., and the number displayed on this car 117 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 set to the operation state by the operation switch 13 can be operated at the same time, and at this time, the display lamp 18 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 8, all inputs made by operating the operation switch 13 are ignored, and the indicator lamp 18 lights up to indicate the operation.

Further, 8 is a dregs leakage IF [lamp, which lights up when a dregs leakage alarm 30, which will be described later and is connected to the slave device 2, detects dregs leakage. 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 is turned on when an operation request switch 29, which will be described later and is connected to the slave device 2, is turned on. 8 is a speaker, and the gas leak alarm lamp 8. Operation alarm lamp 109 Communication alarm lamp 11. When any one of the driving request lamps 12 is lit up, this is notified by an alarm sound.

FIG. 3 is an external view showing the rear side of the parent M11. 2
0 is a changeover switch for setting the system status,
21 is a connector for connecting the EIA-RS232C compliant standard interface, 22 is a setting switch for setting the communication method of the same standard interface, 23 is a volume for adjusting the volume of the alarm sound, and 24 is a connector for connecting the signal line 4. , 25 is a ground terminal for grounding, 2B is a 20 type outlet provided to conveniently 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 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
Reference numeral 5 designates an identification number setting switch for setting a slave unit identification number, and 36 designates a mounting terminal for connecting the operation request switch 28.

FIG. 6 is a circuit block diagram of the main unit 1 and the secondary mirror @la, with a microcomputer 40 as the center, a storage circuit 43 for storing programs of the microcomputer 40, and connections with an EIA-R5232C 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. Switch input circuit 41. It is comprised of 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 one voltage of the battery 47 to determine its degree of consumption; This is a switching circuit for supplying power to the circuit 43 from the stabilized power supply 45 and switching 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 the other circuits is Power is supplied from the stabilized power supply 47, and the comparison circuit 4B
The output of is connected to the microcomputer 40.

FIG. 8 is a circuit diagram showing the connection between the handset 2 and the air conditioner R3, and the air conditioner 3 is a gas heater as an example. 48
51 is a power plug for supplying commercial power; 51 is an automatic/manual switch for switching between operating the air conditioner 3 under central control or independently and manually;
50 is a main switch for turning 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 being restarted even if no action is taken due to re-energization after a power outage; 54
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 communication circuit with the parent R1; 55 and 56 are relay contacts A and B that are remotely controlled by the base unit 1, and the slave unit 2 and the air conditioner 3 are connected by six electric wires. Ru.

FIG. 9 is a circuit block diagram of the handset control circuit 57. 58 is the gas leak alarm 30. Operation request switch 2
9 and an external input circuit for connecting the external thermostat 28, 59
60 is an air conditioner connection circuit for connecting the room side 1, 61 is a modulation/demodulation circuit for communicating with the main 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 Figure 1, the base unit 1. Submaster unit la,
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. And like in room B, there are two 4I air conditioners in one room! 3 is installed,
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 main unit I. In other words, if you set the slave unit 2 of the first air conditioner 3 installed in room B to number n (0≦n≦31),
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 numbers of the secondary mirror 111a are from 0 to 3.
You can set it to any number as long as it has nails up to number 2, and the submaster unit 1
In this case, a can be any number of units as long as it is 32 or less, but in this example, the number of sub-master units 1a is one,
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. Note that if this secondary mirror fila is not installed, the number 0 on the front can be used as the identification number of the handset 2. After setting the identification number of the handset 2 in this rough 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 base unit 1 of how the handset 2 is installed in the system. Switch the changeover switch 20 provided on machine 1 to slave machine 2.
is switched to the initial setting position (not shown), and the presence or absence of the handset 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 slave unit 2 (air conditioner 3) (the identification number is 0).
When the operation switch 13 is pressed once, the operation command lamp 15 lights up and the child Ia2 in the room number 0 is turned on.
indicates that there is only one unit, and if there are two child Ia2 (air conditioners 3), pressing the operation switch 13 again will cause both the operation command lamp 15 and the external control lamp 14 to light up. This indicates that there are two slave units 2 in the room No. 0, and if you press the operation switch 13 once more to check for setting errors, the operation command lamp 15 and external control lamp 14 will be turned on. You can confirm that the settings are correct by turning off both lights and returning to the initial state. In this way, all settings for identification numbers 0 to 31 are made. At this time, the operation switch 13 with the identification number on which the handset 2 is not installed is left in its initial state of 1.

Further, each of the slave units 2 includes a gas leak alarm 30.
Although the operation request switch 23 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 20 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 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 child @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 you press the operation switch 13, the number 0 child #! Connect only to 2 (
Only the operation command lamp 15 is lit) → Connected to slave units 2 No. 0 and 32 (M rotation command lamp 15 and external control lamp 14
lights up) → Connected only to slave unit 2 at number 32 (only external control lamp 14 lights up) → Both slave units 2 at numbers 0 and 32 are not connected, and operation command and external control lamps 15 and 14 are both lit. (No), and settings from 0 to 31 are made.

All the initial settings are made in this way, but with the changeover switch 20 returned to its 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, it moves to the next process, and when it is at the initial setting position of the slave unit, the simultaneous operation switch 7 is set to OIF, Next, it is determined whether the operation switch 13 has been pressed.

If the operation switch 13 is not pressed here,
Once again, the set state of the changeover switch 20 is determined, and if the operation switch 13 is pressed, 1 is added to the value of the counter Cn (n indicates the number of the operation switch 13 that was pressed) inside the microcomputer. , then Cn
If the value is 1, the operation command lamp 15 is lit and turned on.
If the value of Cn is 2, the external control lamp 14 is also lit in conjunction with the lighting of the 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. Both external control lamps 14 are turned off. After this processing, the value of Cn is transferred to the storage circuit 43, and the first reset 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 18
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 this operation command lamp 15 is lit, it is determined whether or not the simultaneous operation switch 7 is in the ON state, and when 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 A is connected to child I12.
55. After giving a signal to turn on both relay contacts B58, only relay contact B56t is turned off, and the process ends. Also, when the operation command lamp 15 is not lit or when the simultaneous operation switch 7 is not turned on,
Relay contact A55. Both relay contacts B5B are turned OFF to complete the process.

In this way, the operation of the room side 1 can be remotely controlled, and the operation of the air conditioner 3 in this case by the opening and closing operations of the relay contacts A55 and 85B of child #&2 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 the relay contact A55, the relay contact 85B can be omitted, making it even simpler. become. Also, as is clear from this flowchart, - simultaneous operation switch 7
It is also possible to start and stop the operation by turning on the operation switch 15 first and then operating the operation switch 15. Furthermore-
Since the simultaneous operation switch 7 is related to all numbered slave units 2, it is possible to operate and stop all the air conditioners 3 at the same time by turning on and off the simultaneous operation switch 7. .

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-R3232C to the connector 21 of the EIA-R8232C 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 parity, etc.) is set using the setting switch 22.

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

That is, the command 5 that is input to this standard interface circuit 37, for example, the command to operate slave unit 2 with number 0, is input as 11SnII (n is any number from θ to 31). Therefore, 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 by the operation switch 2 13), the n-th The operation command lamp 15 of the number n is turned on at the same time as the slave unit 2 of the number n is turned on. Therefore, at this time, both the operation command lamp 15 and the external control lamp 14 are 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 n-th operation command lamp 15 is turned off.

As described above, it is possible to control the operation and stop of the slave unit 2 from the outside using the EIA-R5232C standard interface, but even if it is controlled from the outside, the external control lamp can be controlled by operating the operation switch 13. 14 is turned off, this external control is removed and the parent i
It is also possible to switch to control using a1.

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 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.

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. Stable dead weight @ 45 by continuing to retain memory contents and reenergizing
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 battery 47 cannot compensate for the power outage, so the comparator circuit 46 determines whether the battery 4? The voltage of the battery 47 is constantly monitored, and when it drops to a certain voltage value 9, for example 3 Ov, it is determined that the battery 47 has reached the end of its life and this is notified to the administrator. That is, specifically, the comparison circuit 46
The output is inputted to the microcomputer 40, and the output causes the light emitting section 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 6 is 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,
When the key lock fee 2 is ON, the microcomputer 40 can ignore the input, thereby preventing unnecessary operation of the air conditioner 3 in the room.

However, in this case, #! , only key inputs from the operation switch 13 are viewed, and 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. In addition,
When the key lock switch 6 is turned on, the display lamp 18 is turned on, and the display lamp 18 can be released by pressing the key lock switch 6 again.

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

Next, the operations of child@2 and air conditioner 4!13 will be described.

As mentioned 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 main unit 1 (hereinafter referred to as automatic operation). An automatic/manual changeover switch 51 is provided. Namely.

In FIG. 8, the contact 8gg side of this automatic/manual changeover switch 51 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, 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, a commercial power supply of 100 V is applied between a and c 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.
Even if the relay contact B5B is subsequently turned off, the self-holding by the self-holding relay 52 continues to energize the control circuit 54, allowing the air conditioner 3 to operate automatically, and at the same time, the slave unit control A commercial power supply of 100 V is applied between a and d of the circuit 57, and the child @2 is informed that this self-holding is applied. Similarly, if an abnormality such as a misfire occurs during operation, the control circuit 54 turns off this self-holding relay 52 to cut off the power supply to itself.

That is, in child@2, by monitoring the voltage between a and C of the child unit control circuit 57,
It can be determined whether the air conditioner is in automatic operation or manual operation, and similarly, by monitoring the voltage between a and d, it can be determined whether 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 indoor side 1 must be set to automatic operation, and the signal from the external thermostat 28 attached to child R2 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 n-th slave unit 2 (in this system, n is 0 to 63) in the parent ml, the external thermostat 28 is input to the n-th slave unit 2 in the initial settings thermo 2
8 is installed, and if the installation of this external thermostat 28 is instructed, then
>31, it is determined whether the operation command lamp 15 of n-32) is lit, and this operation command lamp 1 is
When 5 is lit, the -simultaneous operation switch 7 is also set to O.
Determine whether it is N. And - Qi operation switch 7
If is ON, the external thermostat 28 is turned ON and the air conditioning @3 is turned on.
If it is OFF, it will be stopped, and if it does not correspond to any of these initial settings, N rotation command, - simultaneous operation, no processing will be performed. Do it like this.

In addition, a method for monitoring the operation and stopping of the air conditioner 3 will be described here.

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 60 of the slave unit 2, and this is determined by the microcomputer of the slave unit 2. At the same time, the modulation/demodulation circuit 81 transmits the information to the base unit 1 via the communication line 4. Then, in the parent IA1, this signal is received by the modulation/demodulation circuit 38, and the microcomputer 40 judges it.
to 31, and 32 to 63 will be described later) is in operation, the n-th monitoring lamp 16 is turned on, and if stopped, it is turned off.

If two air conditioners IA3 are to be installed in the next room i1, the flowchart shown in FIG. 14 is not as simple as described above. That is, if the operation status signal of the room side 1 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
The monitoring lamp 16 of the nth number is turned off only when both slave units 2 of number n+32 are stopped, and the monitoring lamp 16 is turned on if either one is in operation.

Furthermore, based on the information from slave unit 2, 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.

(6) 8g! Although it is different from a notification, a driving request call is made to notify that a driving request has been made by turning on the driving request switch 29 connected to the slave device 2.

There are four items.

If any abnormality occurs in any of these four items,
If the abnormality occurs in the handset 2 of number 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, in the case of ■, the communication alarm lamp 11, in the case of @, the operation alarm lamp 1o, (in the case of ψ, the gas leak alarm lamp 8), and in the case of ■, the operation request lamp 12 are lit, and at the same time, the administrator An alarm is issued from the alarm sound generation circuit 44 via the speaker 8.

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 again9, for example, a custom alarm such as a gas leak alarm. 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 equipped with terminal control devices are installed in each room, and each of these terminal control devices is centrally controlled by the central control device. In the central monitoring system for air conditioners, the central control unit is equipped with a standard interface circuit, so an external microcomputer system connected to this standard interface circuit can control the central control unit and, by extension, each terminal. The equipment and the air conditioner can be centrally controlled from the outside as appropriate. For example, an operation schedule for one week can be programmed into this external microcomputer system, and this program can be used to control the operation of the air conditioner in each room. , stop control, etc. can be performed automatically as scheduled without the need for administrator operations.Furthermore, it is possible to start operations before the start of work, and even before the end of work. This feature eliminates the need to forget to turn off the power afterwards, improves comfort and economy, and streamlines the administrator's work.

[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 handset as above, Figure 6 is a circuit block diagram of the master unit and sub-master unit as above, Figure 7 is a block configuration diagram showing details of the power supply circuit as above, and Figure 8 is 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, Figure 1.1 is a circuit diagram showing the connection between the slave unit and the air conditioner. A flowchart showing the procedure for starting operation from the above parent unit to each child unit, and Figure 12 shows the procedure for giving commands to the parent unit from the outside using the EIA-R9232C standard interface as above to control the operation and stop of the air conditioner. Flowchart showing,
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 slave unit as above, and Figure 14 is the same as above.Two air conditioners are installed in one room. 3 is a flowchart showing a procedure for controlling the case. l... Parent II (central control unit that controls the entire system), 1a... Secondary mirror Ia (sub central control unit), 2.
...Slave unit (terminal control device), 3...Air conditioner (air conditioner), 4...Communication line, 5...Power switch, 8...Key lock switch, 7... - Simultaneous operation switch, 8... Alarm sound speaker, 9...
Gas leak alarm lamp, 10...Operation alarm lamp, I
f...Communication alarm lamp, 12...Driving request lamp, 13...Driving switch, 14...External control lamp, 15...Driving command lamp, 16...Monitoring Lamp, 2o... Changeover switch, 21...
Connector for standard interface, 22...
Setting switch, 28... External thermostat, 28...
Operation request switch, 3o...Gas leak alarm, 35
...Identification number setting switch, 38.81...Modulation/demodulation circuit, 33...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, 4
6...Comparison circuit, 47...Battery for power outage compensation,
48...Switching circuit, 5o...Main switch 7,
51...Auto/manual changeover switch, 52...
Self-holding relay, 53...Self-holding switch, 54
...Control circuit, 57...Slave device control circuit, 58.
...External input circuit, 60...Air conditioner connection circuit, 6
2...Identification number setting circuit. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masuo Oiwa Fig. 4 Fig. 5 Fig. 7 Fig. 8 --------+ -J Fig. 9 Fig. 10Fa Fig. 13 5P114 Mr. Commissioner of the Japan Patent Office Ne1, Incident Indication of Japanese Patent Application No. 59-1114832, Title of Invention: Centralized Monitoring Device for Air Conditioners 3, Person making the amendment: September 25, 1982 (Date of dispatch)]\6 Drawings to be amended 7 Contents of the amendment Figure 5 is corrected as shown in red on the attached sheet. 8 Catalog of attached documents Corrected drawings in red 1 Written amendment through formalities (spontaneous) 60 3 26 1926 Name of the invention Centralized monitoring device for air conditioners 3 Relationship with the case of the person making the amendment Patent applicant address 2-3 Marunouchi Sara-chome, Chiyoda-ku, Tokyo Name
(601) Mitsubishi Electric Co., Ltd. Representative Hitoshi Katayama Hachibu 4 Agent address 2-3-5 Marunouchi Sara-chome, Chiyoda-ku, Tokyo Column 6 for detailed explanation of the invention in the specification to be amended, Details of the contents of the amendment Correct "other switches" on page 5, lines 6-7 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, the central control unit is provided with a standard interface circuit that can be connected to an external microcomputer system, etc., and a control signal input from the external microcomputer system etc. via the standard interface circuit causes the central control unit to Operation of each terminal control device and air conditioner. A central monitoring device for an air conditioner, characterized in that it is capable of performing stop control. (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.