Equipment item management system, control method thereof, and equipment item management apparatus

• US 8,600,557 B2
• Filed: 06/01/2006
• Issued: 12/03/2013
• Est. Priority Date: 06/01/2006
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Masui, Hirotaka, Hayakawa, Hidesuke
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): LAUGHLIN, NATHAN L
• Application Number:
  US12/298,639
• Publication Number:
  US 20090099698A1
• Time in Patent Office: 2,742 Days
• Field of Search: 700276-278
• US Class Current: 700/276
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/54 using one central controller connected to several sub-controllers
• CPC Class Codes: F24F 11/56 Remote control

Abstract

A first communication section in an optical communication interface communicates with outdoor units and indoor units using a first communication method. A central management controller communicates with the optical communication interface using the first communication method and manages the outdoor units and the indoor units according to the first communication method. A second method communication section in a second communication method indoor unit of a different manufacturer communicates with a second method communication section in a second communication method outdoor unit using a second communication method. The optical communication interface and the second communication method indoor unit exchange information by optical communication with each other using respective optical communication sections.

Claims

1. An equipment item management system comprising:

one or more first air conditioners that operate according to a first communication method;

one or more second air conditioners that operate according to a second communication method different from the first communication method and include light reception means for receiving information according to an optical communication method and means for converting the information according to the optical communication method by the light reception means into information according to the second communication method;

management means that is connected to the first air conditioner and operates according to the first communication method to manage the first air conditioner;

an interface having a first communication means configured to receive information from the management means, control means for converting the information received from the management means by the first communication means from the first communication method into the optical communication method, and light transmission means for transmitting the information converted by the control means to the second air conditioner;

wherein the management means;

identifies a manufacturer of the second air conditioner;

is connected to the second air conditioner via the interface that is connected to the management means which communicates by the first communication method; and

manages the second air conditioner by transmitting a command corresponding to the manufacturer of the second air conditioner, also, that operates according to the different communication method.

2. The equipment item management system according to claim 1, wherein the management means transmits a temperature setting command to the second air conditioner via the interface.

3. The equipment item management system according to claim 2, wherein the management means transmits the temperature setting command to the first air conditioner and the second air conditioner in a case where an energy-saving control is performed.

4. The equipment item management system according to claim 1, wherein the interface includes light reception means for

receiving an optical signal from a wireless remote controller, converting the received optical signal into an electric signal, and

transmitting the signal to the management means.

5. The equipment item management system according to claim 1, wherein the second air conditioner includes an output terminal for outputting an operation or stop state signal, and the interface includes an input terminal that is electrically connected to the output terminal.

6. The equipment item management system according to claim 2, wherein the second air conditioner is a ceiling-mounted type air conditioner, the light transmission means is electrically connected to the control means and installed on an under surface of the air conditioner to face the optical communication means, and the control means is installed on a backside of the ceiling.

7. The equipment item management system according to claim 2, wherein the interface includes light reception means for receiving an optical signal from a wireless remote controller, converting the received optical signal into an electric signal, and transmitting the signal to the management means.

8. The equipment item management system according to claim 3, wherein the interface includes light reception means for receiving an optical signal from a wireless remote controller, converting the received optical signal into an electric signal, and transmitting the signal to the management means.

9. The equipment item management system according to claim 2, wherein the second air conditioner includes an output terminal for outputting an operation or stop state signal, and the interface includes an input terminal that is electrically connected to the output terminal.

10. The equipment item management system according claim 3, wherein the second air conditioner includes an output terminal for outputting an operation or stop state signal, and the interface includes an input terminal that is electrically connected to the output terminal.

11. The equipment item management system according to claim 4, wherein the second air conditioner includes an output terminal for outputting an operation or stop state signal, and the interface includes an input terminal that is electrically connected to the output terminal.

12. The equipment item management system according to claim 3, wherein the second air conditioner is a ceiling-mounted type air conditioner, the light transmission means is electrically connected to the control means and installed on an under surface of the air conditioner to face optical communication means, and the control means is installed on a backside of the ceiling.

13. The equipment item management system according to claim 4, wherein the second air conditioner is a ceiling-mounted type air conditioner, the light transmission means is electrically connected to the control means and installed on an under surface of the air conditioner to face optical communication means, and the control means is installed on a backside of the ceiling.

14. The equipment item management system according to claim 5, wherein the second air conditioner is a ceiling-mounted type air conditioner, the light transmission means is electrically connected to the control means and installed on an under surface of the air conditioner to face optical communication means, and the control means is installed on a backside of the ceiling.

15. The equipment item management system according to claim 1, wherein:

the interface includes a memory that stores, for different types of air conditioners, one or more commands of the first communication method, as stored command sets; and

the interface selects one of the stored command sets from the memory for communication via the light transmission means.

16. The equipment item management system according to claim 15, wherein:

the memory includes a command conversion table storing the command sets such that one of the command sets is selected in advance via hardware or a memory setting.

17. The equipment item management system according to claim 1, wherein:

the interface is disposed between the first and second air conditioners such that the interface provides bi-directional conversion of communications between the first and second communication methods.

18. An equipment item management apparatus comprising:

a central controller having control means configured to;

control temperature of a first air conditioner and a second air conditioner; and

identify a manufacturer of the second air conditioner; and

communication means for outputting an electric signal to a network to which the air conditioners are connected based on;

a temperature set by the control means; and

an interface having reception means that is connected to the network and receives the electric signal transmitted to the network, and light output means that protocol-converts the electric signal received by the reception means and outputs the converted signal in a form of a wireless optical signal as a temperature setting command,

wherein the first air conditioner is connected to the network and operates according to a first communication method,

the second air conditioner operates according to the wireless optical signal output by the interface corresponding to the manufacturer of the second air conditioner and different from the first communication method, and

the central controller is connected to the first air conditioner via the network, and is also connected to the second air conditioner via the interface that is connected to the central controller.

19. A control method for an equipment item management system comprising:

a first air conditioner that operates according to a first communication method;

management means, which is connected to the first air conditioner, for;

communicating with the first air conditioner according to the first communication method; and

managing the first air conditioner;

an interface, which is connected to the management means, for converting and transmitting the signal sent from the management means; and

a second air conditioner, which is connected to the management means via the interface, including communication means for communicating according to a second communication method different from the first communication method and light reception means for receiving information according to an optical communication method,

wherein the management means;

identifies a manufacturer of the second air conditioner; and

transmits a temperature setting command for specifying a set temperature of the second air conditioner using the first communication method using an electric signal,

the interface converts the temperature setting command from the first communication method into the optical communication method and transmits the converted command corresponding to the manufacturer of the second air conditioner to the second air conditioner, and

the second air conditioner receives the temperature setting command according to the optical communication method and controls a compressor based on the received temperature setting command.

20. The control method for the equipment item management system according to claim 19, wherein the interface converts a temperature setting command according to the optical communication method received from a wireless remote controller for the second air conditioner from the optical communication method into the first communication method, and transmits the converted temperature setting command to the management means;

and

the management means stores a changed set temperature of the second air conditioner based on the received temperature setting command according to the first communication method.

21. The control method for the equipment item management system according to claim 20, wherein the management means includes storage means that stores a table in which priority information indicating whether to prioritize a set temperature set by the management means or prioritize the temperature setting command received from the wireless remote controller is included, determines whether to validate a received temperature setting command based on the table at the time when the management means receives the temperature setting command from the interface, and transmits the temperature setting command to the interface in a case where the management means determines to validate the temperature setting command from the interface, and

when the interface receives the temperature setting command from the management means, the interface converts the received temperature setting command according to the first communication method into the optical communication method, and transmits the converted command to the second air conditioner.

22. The control method for the equipment item management system according to claim 21, wherein the interface includes a buzzer that emits an alarm sound,

the management means transmits a message indicating that information of the wireless remote controller is invalidated to the interface in a case where the management means determines to invalidate the information, and

the interface instructs the buzzer to output a sound indicating that the information from the wireless remote controller is invalidated.

23. The control method for the equipment item management system according to claim 19, wherein the management means sequentially transmits commands according to a plurality of optical communication methods corresponding to a plurality of types of air conditioners to the second air conditioner, receives a signal indicating an operation state of the second air conditioner from the second air conditioner, and specifies a command according to an optical communication method for controlling the second air conditioner based on the signal.

24. The control method for the equipment item management system according to claim 20, wherein the management means sequentially transmits commands according to a plurality of optical communication methods corresponding to a plurality of types of air conditioners to the second air conditioner, receives a signal indicating an operation state of the second air conditioner from the second air conditioner, and specifies a command according to an optical communication method for controlling the second air conditioner based on the signal.

25. The control method for the equipment item management system according to claim 21, wherein the management means sequentially transmits commands according to a plurality of optical communication methods corresponding to a plurality of types of air conditioners to the second air conditioner, receives a signal indicating an operation state of the second air conditioner from the second air conditioner, and specifies a command according to an optical communication method for controlling the second air conditioner based on the signal.

26. The control method for the equipment item management system according to claim 22, wherein the management means sequentially transmits commands according to a plurality of optical communication methods corresponding to a plurality of types of air conditioners to the second air conditioner, receives a signal indicating an operation state of the second air conditioner from the second air conditioner, and specifies a command according to an optical communication method for controlling the second air conditioner based on the signal.

27. The equipment item management system according to claim 23, wherein:

the management means and the second air conditioner bidirectionally communicate via light communication means such that the management means receives the signal indicating the operation state of the second air conditioner from the second air conditioner and, in response to reception of the signal indicating the operation state of the second air conditioner, the second air conditioner receives, via the light communication means from the management means, the command for controlling the second air conditioner.