JP2001108284A - Transmission converting method and transmission converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission converting method and a transmission converter which can monitor the monitoring items required in a building control system without fail, by simplifying the function of mediating the transmission signal of a building control system and the transmission signal of a multiroom type air conditioner and materializing it at a low price. SOLUTION: This transmission converter 1 is equipped at least with a first reception means 11 which receives the first transmission signal sent from a building control system 2, a first protocol conversion means 12 which generates the first converted transmission signal in the transmission format which can be data-processed by a multiroom type air conditioner 3 by adding the address section of an indoor unit 3-2 to a single operation command data part extracted from the first transmission signal, and the generated first transmission means 13 which transmits the first converted transmission signal to the indoor unit 3-2 specified by the address data section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission conversion method and a transmission conversion device for data communication connection between a building management system for managing and controlling an entire building, and equipment to be managed such as a multi-room air conditioner. Things.

[0002]

2. Description of the Related Art FIG. 11 is a system configuration diagram showing an example in which a multi-room air conditioner and a building management system are connected by a conventional transmission converter. The multi-room air conditioner 3 shown in FIG.
The outdoor unit 3-1 and a plurality of individually operable indoor units 3-
Are connected in the same refrigerant circuit, and are centrally monitored and controlled by the management system 2. A transmission converter 7 is connected between the multi-room air conditioner 3 and the building management system 2 via an air conditioner-side transmission line 5 and a building management system-side transmission line 4.
The transmission conversion device 7 receives the transmission signal transmitted from the multi-room air conditioner 3, converts the transmission signal into a transmission format that can be processed by the building management system 2, and transmits the data to the building management system 2. The transmission signal transmitted from the multi-room air conditioner 3 is received, converted into a transmission format that can be processed by the multi-room air conditioner 3, and transmitted to the multi-room air conditioner 3.

FIG. 12 shows an example of a transmission format that can be processed by the air conditioner 3 and an example of a transmission format that can be processed by the building management system 2. Is a transmission data format transmitted from the building management system 2 to the transmission conversion device 7, and is a transmission data format transmitted from the transmission conversion device 7 to the indoor unit 3-2 upon reception of. Is a transmission data format transmitted from the indoor unit 3-2 to the transmission conversion device 7, and is a transmission data format transmitted from the transmission conversion device 7 to the building management system 2 upon reception of.

[0004] For example, when a set temperature command is transmitted from the building management system 2, the transmission conversion device 7 operates the indoor unit 3-2.
, It is necessary to add a plurality of data in addition to the set temperature data, such as data 1 (operation / stop command) and data 2 (operation mode command) in the data format. The transmission format is generated by selecting predetermined data from all the indoor unit data stored in the transmission conversion device 7. Thereafter, when another command is received from the building management system 2, the transmission converter 7 stores the data received from the building management system 2 as all indoor unit storage data in preparation for transmission to the indoor unit 3-2. I have. On the other hand, when receiving “・” from the indoor unit 3-2, the received data is decomposed into a plurality of transmission signals corresponding to the received data, and then transmitted to the building management system 2.

[0005]

SUMMARY OF THE INVENTION Conventional transmission converter 7
Are configured as described above, so that all the indoor units 3-2, 3-2,... Are prepared for reception from the building management system 2.
・ ・ A huge amount of memory was required because the current state in the system had to be stored. Also,
Complicated data processing such as adding or decomposing internal storage data to data at the time of transmission conversion is required. Also, from the received data from the building management system 2 or the received data from the indoor unit 3-2, all the indoor units 3-2
.. Must be stored, for example, when there is unmanaged data in the building management system 2 or when there is no reception from the indoor unit 3-2. Have a problem that the storage data of all the indoor units 3-2, 3-2,... Cannot be generated, and the function as the transmission conversion device 7 cannot be realized. In addition, when the signal amount of the building management system-side transmission line 4 or the air conditioner-side transmission line 5 is large and the transmission occupancy is high, there is also a problem that transmission conversion processing cannot be performed in time and accurate transmission conversion cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has a simplified function of retaining a transmission signal of a building management system and a transmission signal of a multi-room air conditioner, thereby realizing the same at low cost. In addition, it is an object of the present invention to provide a transmission conversion method and a transmission conversion device capable of reliably monitoring monitoring items required by a building management system.

[0007]

To achieve the above object, a transmission conversion method according to the present invention is directed to a multi-room including an outdoor unit and a plurality of individually operable indoor units connected in the same refrigerant circuit. Signals transmitted and received between a multi-room air conditioner and a building management system deployed to centrally monitor and control the operation of the multi-room air conditioner Is transmitted to the building management system by converting the data into a transmission format that can be processed by the building management system, and a transmission format in which the multi-room air conditioner can receive the transmission signal transmitted from the building management system and process the data. In the transmission conversion method of converting to a multi-room air conditioner and transmitting it to the multi-room air conditioner, an operation finger transmitted from the building management system and sent to each indoor unit of the multi-room air conditioner A first transmission signal having a transmission format including a data portion and an address data portion specifying a position of the indoor unit in the multi-room air conditioner is received, and a single operation command data is received from the received first transmission signal. A portion is extracted, and an address data portion relating to the indoor unit is added to the extracted single operation command data portion to generate a first conversion transmission signal in a transmission format that can be processed by the multi-room air conditioner, and the generation is performed. The first converted transmission signal is transmitted to the indoor unit specified by the address data portion.

Further, a transmission converter according to the present invention includes a multi-room air conditioner in which an outdoor unit and a plurality of individually operable indoor units are connected in the same refrigerant circuit, and a multi-room air conditioner. Transmission signal transmitted from the multi-room air conditioner, connected to the building management system deployed for centralized monitoring and operation control via a transmission line on the air conditioner side and a transmission line on the building management system side Is transmitted to the building management system by converting the data into a transmission format that can be processed by the building management system, and a transmission format in which the multi-room air conditioner can receive the transmission signal transmitted from the building management system and process the data. In a transmission conversion device for converting to a multi-room air conditioner and transmitting it to the multi-room air conditioner, at least an operation command sent from the building management system and sent to each indoor unit of the multi-room air conditioner A first transmission unit configured to receive a first transmission signal configured in a transmission format including a data portion and an address data portion specifying a position of the indoor unit in the multi-room air conditioner; First
A first operation format of a transmission format in which a multi-room air conditioner can process data by extracting a single operation command data portion from a transmission signal and adding an address data portion of an indoor unit to the extracted single operation command data portion A first protocol converter for generating a converted transmission signal; and a first transmitter for transmitting the first converted transmission signal generated by the first protocol converter to an indoor unit specified by the address data portion. It is.

In the configuration of the apparatus, a signal relating to an operation command data portion is transmitted from the building management system, such as an operation / stop operation command, an operation mode operation command such as cooling / heating, a target temperature setting, or a room temperature setting. The signal is one of the air volume settings of the blower or a combination thereof.

Further, the transmission converter according to claim 2 or 3 is connected to a building management system side transmission line or an air conditioner side transmission line in parallel with another transmission conversion device. An address switch for externally setting the self-address of the transmission converter, and connecting to the same building management system-side transmission line or air conditioner-side transmission line other than the transmission converter to which the self-address is set from the address switch. Transmission conversion device detecting means for detecting the address of the other transmission conversion device, and the address of the other transmission conversion device detected by the transmission conversion device detection device and the own address of the transmission conversion device set by the address switch. And a management address determining means for determining a management target address of the indoor unit from the control unit.

In the configuration of the apparatus, the management address determining means may include a management target indoor unit for receiving a management target address setting command signal transmitted from outside via a building management system side transmission line or an air conditioner side transmission line. An address setting signal receiving means, and a managed indoor unit address determining means for determining a managed address of the indoor unit based on the content of the managed address setting command signal received by the managed indoor unit address setting signal receiving means. Things.

In the configuration of the apparatus, a management target setting switch for setting an air conditioner such as a multi-room air conditioner and a target equipment other than the air conditioner is a management target setting switch. A target equipment recognizing means for recognizing the type of the target equipment from the setting contents of the switch is provided.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. Embodiment 1 of the Invention FIG. 1 is a block diagram showing an entire system including a transmission converter according to Embodiment 1 of the present invention. However, the same components as those of the entire system including the conventional transmission converter shown in FIGS. 11 and 12 are denoted by the same reference numerals, and detailed description thereof may be omitted unless necessary. In the figure, 1 is a transmission converter according to Embodiment 1 of the present invention, 2 is a building management system, 3 is a multi-room air conditioner, and 3-1 is a plurality of outdoor units constituting the multi-room air conditioner 3. , 3-2 is one outdoor unit 3
-1, a plurality of indoor units connected to the building management system 2 and the transmission converter 1 connecting the transmission converter 1 to the building management system 5 and an air conditioner connecting the multi-room air conditioner 3 and the transmission converter 1 to each other. Side transmission line. Here, the transmission conversion device 1
The transmission signal transmitted from the multi-room air conditioner 3 is received, converted into a transmission format that can be processed by the building management system 2 and transmitted to the building management system 2, and the transmission signal transmitted from the building management system 2 is transmitted. Is received, converted into a transmission format that can be processed by the multi-room air conditioner 3, and transmitted to the multi-room air conditioner 3.

That is, the transmission conversion device 1 comprises a first receiving means 11 for receiving a first transmission signal transmitted from the building management system 2, and a first conversion transmission capable of processing data by the multi-room air conditioner 3. The multi-room type includes first protocol conversion means 12 for generating a signal based on the first transmission signal, and first transmission means 13 for transmitting the generated first conversion transmission signal to the indoor unit 3-2. A second receiving means for receiving a second transmission signal transmitted from the air conditioner, and a second protocol conversion for generating a second conversion transmission signal that can be processed by the building management system based on the second transmission signal; And a second transmitting unit for transmitting the generated second converted transmission signal to the building management system.

The data processing by the transmission converter 1 will be described with reference to the flowchart of FIG. Transmission conversion device 1
Receives the transmission signal from the indoor unit 3-2 of the multi-room air conditioner 3, checks the type of the signal, and determines whether or not the signal is a relay target (21). If relaying to the building management system 2 is necessary (Yes in 21), the multi-room air conditioner 3
It is determined whether or not the address is a management target (2
2). If the address is a management target (Y of 22)
In es), the address of the indoor unit 3-2 is added to the received data and transmitted to the building management system 2 (23). On the other hand, if the signal type is not handled by the building management system 2 (No in 21) or a signal from an address not managed by the transmission conversion device 1 (No in 22), the data is discarded ( 24). Here, the determination as to whether or not the transmission conversion apparatus 1 is to be managed is performed because the transmission amount is large and the transmission conversion apparatuses 1, 1, 1
.. Are performed in parallel.

The flow of a transmission signal in the transmission converter 1 is as shown in FIGS. In FIG. 3, when the transmission converter 1 receives a signal from the building management system 2 to turn on the indoor unit 3-2 of the first unit, the transmission converter 1 transmits the signal to the indoor unit 3-2 of the first unit. Transmit the operation ON signal. On the other hand, when receiving a signal indicating that the vehicle is in the stop state from the indoor unit 3-2 of the second unit, the control unit 2 transmits a signal of stopping the second unit to the building management system 2.

Further, as shown in FIG.
For example, the signal of the operation command data portion in the first transmission signal or the conversion transmission signal transmitted from the building management system 2 is, for example, an operation / stop operation instruction, an operation mode operation instruction such as cooling / heating, a target temperature setting, or an indoor temperature. Any signal such as setting of the air volume of the blower or a combination thereof is used. The second transmission signal transmitted from the indoor unit 3-2 to the transmission converter 1 includes, for example, an operation / stop state, an operation mode state such as cooling / heating, a target temperature setting state, an air volume state of the indoor unit blower, Alternatively, a monitor signal or a failure signal including any one of indoor temperature conditions or a combination thereof is included. That is, FIG.
As shown in (B), the operation ON / OFF data is transmitted and converted to the building management system 2 and relayed. In contrast,
For example, since the pipe temperature is not used in the building management system 2, it is discarded without performing transmission conversion and relay.

Next, a specific example of a data transmission conversion method will be described with reference to FIG. The first transmission signal F1 sent from the building management system 2 to the transmission converter 1 includes a source address (A: address of the building management system 2), a destination address (B: address of the transmission converter 1), and a command (CM1). ) And an indoor unit address (c). Here, A and B are addresses in the building management system side transmission. c is an address in the air conditioner side transmission, which is an address data portion for specifying the position of the indoor unit 3-2. CM1 is data indicating the content of the command, and is the indoor unit 3-2 of the multi-room air conditioner 3.
This is an operation command data portion sent every time.

The transmission converter 1 converts the first transmission signal F1 received from the building management system 2 by the following method. When the first receiving means 11 receives the first transmission signal F1, the first protocol conversion means 12 converts a single operation command data portion (CM) from the received first transmission signal F1.
1), and extracts the extracted single operation command data portion (C
Address data portion (c) related to indoor unit 3-2 in M1)
Is added as a transmission destination address, and a transmission source address (the address b of the transmission conversion device 1 for transmission on the air conditioner side) is further added.
To generate a first converted transmission signal F2 in a transmission format that allows data processing by the multi-room air conditioner 3. Then, the first transmission unit 13 generates the generated first
The converted transmission signal F2 is transmitted to the indoor unit 3-2 specified by the address c. The indoor unit 3-2 at the address c executes the command content of the operation command data portion (CM1) of the transmitted first converted transmission signal F2.

On the other hand, a data conversion method when the transmission conversion device 1 receives data from the indoor unit 3-2 will be described below. Second transmission signal F3 sent from indoor unit 3-2 to transmission conversion device 1
Is the source address (c: the address of the indoor unit 3-2),
It is composed of a destination address (b: address of the transmission conversion device 1) and a command (CM2). here,
c and b are addresses related to the transmission on the building management system side, and CM2 is data indicating the state of the indoor unit 3-2.

The transmission converter 1 converts the second transmission signal F3 received from the indoor unit 3-2 as follows. When the second transmission means 16 receives the second transmission signal F3, the second protocol conversion means 15 uses the command (CM2) as it is as a command to be transmitted to the building management system 2, and includes the source address ( c: Indoor unit 3-
2), which indoor unit 3-
2 is transmitted to the building management system 2. The transmission source address is the address B of the transmission conversion device 1 for building management system transmission, and the destination address is the address A of the building management system 2 to generate the second converted transmission signal F4. The second converted transmission signal F4 generated in this way is transmitted to the building management system 2 by the second receiving means 14.

Here, a case where a plurality of transmission converters 1, 1,... Are installed is illustrated in FIG. In the figure,
The plurality of transmission converters 1, 1, ... are connected in parallel to the building management system-side transmission line 4 or the air conditioner-side transmission line 5. Each of the transmission converters 1 has an address switch 52 for externally setting its own address, and the same building management system side transmission line 4 other than the transmission converter 1 for which its own address has been set from the address switch 52. The transmission converter detection means 54 for detecting the addresses of the other transmission converters 1, 1,... Connected on the transmission line 5 on the air conditioner side and the transmission converter detection means 5
, The management target address of the indoor unit 3-2 is determined from the addresses of the other transmission converters 1, 1,... Detected by the control unit 4 and the own address of the transmission converter 1 set by the address switch 52. Address determining means 55. The transmission converter detecting means 54 and the management address determining means 55 are realized by, for example, the function of a microprocessor (CPU) 57 here. Also, reference numeral 51 in the figure denotes a building management system side transmitting / receiving circuit for taking in a transmission signal from the building management system side transmission line 4 into the microprocessor 57, and 53 denotes a microprocessor 5
Self-address reading means for reading the self-address of the transmission conversion device 1 from the transmission signal received by the microprocessor 7;
7 is an air conditioner side transmission / reception circuit to be taken in.

Therefore, as described above, the transmission converter 1,
The method of determining the address of the air conditioner to be managed when a plurality of units are installed will be described with reference to the flowchart of FIG. For example, the addresses of the plurality of indoor units 3-2, 3-2,... Are set within the range of 1 to 100, and the addresses of the plurality of transmission converters 1, 1,. An example will be described in which the range is set up to. First, the transmission converter 1 searches for another transmission converter 1 existing on the air conditioner-side transmission line 5 (61). Next, it is confirmed whether or not there is a transmission converter 1 other than its own (62). At this time, if there is no transmission conversion device 1 other than its own (No at 62), it is determined that only its own exists, and the connected indoor units 3-2, 3-2,.
Are all managed (65). On the other hand, if there is another transmission converter 1 on the air conditioner side transmission line 5 (Yes at 62), the next largest address after the own address is checked (63), and the address is confirmed. And memorize it. Then, the indoor unit 3-2 specified by the address from the value of the self address -100 to less than the value of the next largest transmission conversion device address -100 is to be managed (64). For example, if the transmission conversion device 1 has its own address of 110 and the other transmission conversion device 1 has the youngest address of 153, its own address is 110.
The addresses of the indoor units 3-2 to be managed by the transmission conversion device 1 are 10 to 52. Further, if there is the transmission converter 1 having the next highest self address of 153 and the self address is 185, the self address becomes 1
The 53 transmission converter 1 is an indoor unit 3 having addresses 53 to 84.
-2 is to be managed, and the transmission conversion device 1 having its own address of 185 is to manage the indoor unit 3-2 having addresses 85 to 100.

Here, the transmission converter 1 in which the type of the equipment to be managed is set from an external switch will be described.
FIG. 8 shows an example of the entire system including the transmission conversion device, and reference numeral 6 in the figure denotes a management target setting switch for setting the type of the management target equipment. Transmission conversion device 1
Is for setting the air conditioner equipment 73 such as the multi-room air conditioner 3 and the target equipment other than the air conditioner equipment 73 (for example, the refrigerator equipment 74 or the lighting equipment 75) to be managed by the user. The management target setting switch 6 includes a target equipment recognizing means 72 for recognizing the type of the target equipment based on the settings of the management target setting switch 6. Therefore, a data processing method by the transmission conversion device 1 will be described with reference to a flowchart of FIG. In this flowchart, the air conditioner equipment 73, the refrigerator equipment 74, and the lighting equipment 75 are taken as examples. When the power is turned on, the transmission converter 1 reads the setting contents of the management target setting switch 6 (71), and the target equipment recognizing means 72 checks the contents. Then, the target equipment recognizing means 72 determines the equipment to be managed based on the confirmed contents, and thereafter, each equipment (73, 74, 7).
The operation of the transmission converter 1 according to 5) is performed.

Embodiment 2 of the Invention In the first embodiment described above, the method of determining the management target address of the air conditioner 3 is derived from the own address of the transmission conversion device 1 and the address of another transmission conversion device 1. For example, the building management system side transmission line 4 or by transmission from the air conditioner side transmission line 5. Similarly, a method of selecting / determining a device to be managed may be a setting method by transmission from the outside.

Embodiment 2 of the present invention will be described with reference to FIG. Here, another example of the management address determining means 55 shown in FIG. 6 will be described. The management address determining means of this embodiment includes a management target address setting command signal transmitted from the management target indoor unit address external setting device 31 via the building management system side transmission line 4 and the building management system side transmission / reception circuit 51, or air conditioning. A managed indoor unit address setting signal receiving means 3 for receiving a managed address setting command signal transmitted from the managed indoor unit address external setting device 32 via the equipment side transmission line 5 and the air conditioner side transmitting / receiving circuit 56
3 and a managed indoor unit address determining means 34 for determining the managed address of the indoor unit 3-2 based on the content of the managed address setting command signal received by the managed indoor unit address setting signal receiving means 33. It is configured.

Then, when the address of the indoor unit to be managed is transmitted from the external address setting unit 31 for the indoor unit to be managed to the transmission converter 1, the transmission converter 1 transmits the transmission signal to the transmission / reception circuit 51 on the building management system side. The management target indoor unit address setting signal receiving means 33 receives the control target indoor unit address setting signal receiving means 33, and the management target indoor unit address determination means 34 determines the management target indoor unit address. For example, when the management target indoor unit addresses are transmitted as 31 to 40, the indoor units 3-2, 3-2,. , And only signals received from the building management system side transmission line 4 and addressed to the indoor units at addresses 31 to 40 are transmitted and converted, and other signals are discarded without conversion. On the other hand, when receiving from the managed indoor unit address setting device 32 connected to the air conditioner side transmission line 5, the managed indoor unit address setting signal receiving unit 33 receives the received data via the air conditioner side transmitting / receiving circuit 26. Similarly, the managed indoor unit address determining means 34 determines the managed indoor unit address.

[0028]

As described above in detail, according to the transmission conversion method and apparatus according to the present invention, the operation command data portion such as the operation / stop command for the indoor unit received from the building management system and the indoor unit address signal Since only a single operation command data portion is extracted as it is from the first transmission signal of the transmission format consisting of and transmitted to the corresponding indoor unit as a first converted transmission signal of a transmission format capable of data processing, This eliminates the need for a large-capacity memory for storing the state of all indoor units for conversion. In addition, complicated processing such as adding or disassembling the internal storage data at the time of generation of the conversion data is not required, and the effect that it can be realized at low cost is obtained. Further, with the above configuration, transmission conversion can be performed even when all data of the air conditioner is not prepared.

Further, since only the data managed by the building management system is converted, unnecessary air conditioning data is not transmitted to the building management system.
Transmission congestion on the building management system side transmission line can be avoided.

Since a plurality of transmission converters are installed, transmission conversion can be reliably performed even when the signal amount of the transmission line is large.

Further, even if the types of the equipment to be managed from the building management system are different, it is possible to easily cope with the situation on site.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an entire system including a transmission conversion device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an internal process of the transmission conversion device.

FIG. 3 is an explanatory diagram showing a flow of a transmission signal for each address of an indoor unit by the transmission conversion device.

4A and 4B are diagrams illustrating a flow mode of each transmission signal data in the transmission conversion device, wherein FIG. 4A is an explanatory diagram illustrating a flow of a transmission signal when received from a building management system, and FIG. FIG. 3 is an explanatory diagram showing a flow of a transmission signal when receiving from a room type air conditioner.

FIG. 5 is an explanatory diagram showing a specific example of a data conversion method by the transmission conversion device.

FIG. 6 is a configuration diagram showing an entire system when a plurality of the transmission conversion devices are installed.

FIG. 7 is a flowchart showing data processing when a plurality of transmission conversion devices are installed.

FIG. 8 is a configuration diagram showing an entire system when a management target setting switch is provided in the transmission converter.

FIG. 9 is a flowchart showing a process of selecting and determining a facility to be managed by the transmission conversion device.

FIG. 10 is a configuration diagram of an entire system including a plurality of transmission conversion devices and an external address setting device according to a second embodiment of the present invention.

FIG. 11 is a configuration diagram of an entire system including a conventional transmission conversion device.

FIG. 12 is an explanatory diagram showing a data conversion method by a conventional transmission conversion device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Transmission conversion device, 2 Building management system, 3 Multi-room air conditioner, 3-1 Outdoor unit, 3-2 Indoor unit, 4 Transmission line on building management system, 5 Transmission line on air conditioner, 6 Management target setting switch , 11 first receiving means, 12 first protocol converting means, 13 first transmitting means, 31 managed indoor unit address external setting device, 32 managed indoor unit address external setting device, 33 managed indoor unit address setting signal receiving means , 34 managed indoor unit address determining means, 52 address switch, 54 transmission conversion device detecting means, 55 managed address determining means, 72 target equipment recognizing means, 73 air conditioner equipment, 74 refrigerator equipment, 75
Lighting equipment, F1 first transmission signal, F2 first conversion transmission signal.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuya Tamura 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 3L060 AA08 EE01 3L061 BA05 BA07 5K034 AA05 AA10 AA11 CC06 HH01 HH02 HH12 HH61 HH63 MM25 TT02 5K048 BA08 BA51 DA02 DA05 DC04 EA12 EA13 EA14 EB01 EB02 EB06 HA05 HA07

Claims (6)

[Claims] 1. A multi-room air conditioner in which an outdoor unit and a plurality of individually operable indoor units are connected in the same refrigerant circuit, and for centrally monitoring and controlling operation of the multi-room air conditioner. Upon transmitting / receiving a transmission signal to / from a deployed building management system, the building management system receives the transmission signal transmitted from the multi-room air conditioner, converts the transmission signal into a transmission format that can be processed by the building management system, and Along with transmitting to the management system, the multi-room air conditioner receives the transmission signal transmitted from the building management system, converts the transmission signal into a transmission format that can be processed by the multi-room air conditioner, and transmits the data to the multi-room air conditioner. In the transmission conversion method described above, the operation command data portion transmitted from the building management system and sent for each indoor unit of the multi-room air conditioner and the multi-room air conditioner of the indoor unit Receiving a first transmission signal configured in a transmission format including an address data portion specifying a position in the air conditioner; extracting a single operation command data portion from the received first transmission signal; The multi-room air conditioner generates a first converted transmission signal in a transmission format that can be processed by the multi-room air conditioner by adding an address data portion relating to the indoor unit to the single operation command data portion thus generated. A transmission conversion method comprising transmitting a converted transmission signal to an indoor unit specified by the address data portion. 2. A multi-room air conditioner comprising an outdoor unit and a plurality of individually operable indoor units connected in the same refrigerant circuit, and a multi-room air conditioner for centrally monitoring and controlling operation of the multi-room air conditioner. The building management system is connected to a deployed building management system via an air conditioner-side transmission line and a building management system-side transmission line, and receives a transmission signal transmitted from the multi-room air conditioner. Is converted to a data processing transmission format and transmitted to the building management system.The transmission signal transmitted from the building management system is received and the multi-room air conditioner converts the data to a transmission format capable of data processing. In the transmission conversion device for transmitting to the multi-room air conditioner, at least an operation finger transmitted from the building management system and transmitted to each indoor unit of the multi-room air conditioner A first reception unit configured to receive a first transmission signal configured in a transmission format including a data part and an address data part specifying a position of the indoor unit in the multi-room air conditioner; and the first reception unit. The multi-room air conditioner extracts a single operation command data portion from the received first transmission signal and adds an address data portion of the indoor unit to the extracted single operation command data portion. First generating a first converted transmission signal in a transmission format capable of data processing;
Transmission conversion means comprising: protocol conversion means; and first transmission means for transmitting a first conversion transmission signal generated by the first protocol conversion means to an indoor unit specified by the address data portion. apparatus. 3. A signal relating to an operation command data portion is transmitted from a building management system, such as an operation / stop operation command, an operation mode operation command such as cooling / heating, a target temperature setting, or an air volume setting of an indoor unit blower. 3. The transmission conversion device according to claim 2, wherein the transmission conversion device is a signal obtained by combining any one of them. 4. The transmission converter according to claim 2 or 3, wherein the transmission converter is connected to a building management system side transmission line or an air conditioner side transmission line in parallel with another transmission conversion device. An address switch for setting the self-address of the transmission conversion device from the outside, and the same address on the same building management system-side transmission line or air conditioner-side transmission line other than the transmission conversion device in which the self-address is set from the address switch. Transmission conversion device detection means for detecting the address of the other transmission conversion device connected thereto, and the transmission conversion device set by the address switch and the address of the other transmission conversion device detected by the transmission conversion device detection means. A transmission conversion device comprising a management address determining means for determining a management target address of an indoor unit from a self address of the device. 5. A management target indoor unit address setting signal receiving means for receiving a management target address setting command signal transmitted from outside via a building management system side transmission line or an air conditioner side transmission line. And a managed indoor unit address determining means for determining a managed address of an indoor unit based on the content of the managed address setting command signal received by the managed indoor unit address setting signal receiving means. The transmission converter according to claim 4, wherein 6. A management target setting switch for setting an air conditioner such as a multi-room air conditioner and a target equipment other than the air conditioner to be managed, and setting contents of the management target setting switch. 6. The transmission conversion apparatus according to claim 2, further comprising: a target equipment recognizing means for recognizing a type of the target equipment from a user.