JP2003153349A - Central control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a central control system without decreasing performance of communication included in a central control means and a communication terminal means even when an electric apparatus has low communication performance. SOLUTION: The central control system includes a central control unit 10 for controlling an electric apparatus like an air conditioner 11 through a communication network using an electric wire 1 for electric lighting, and a communication terminal unit 2a for storing an operation state of the air conditioner 11 as apparatus information and connecting the air conditioner 11 to the communication network. When the communication terminal unit 2a receives a telegraphic message of affirmation of the operation state of the air conditioner 11 through the communication network, the stored apparatus information is transmitted to the central control unit 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centralized management system for remotely operating and managing a plurality of electric devices via a communication network.

[0002]

2. Description of the Related Art Conventionally, a centralized management system for remotely operating and managing a plurality of electric devices via a communication network has been used even in ordinary homes. The following description will be made with reference to the example disclosed in JP-A No. 11-346392.

FIG. 9 is a block diagram showing an example of the configuration of a conventional centralized management system. In FIG. 9, 100 is a centralized management device for managing a plurality of devices, 200a, 200b,
A terminal device 200c has an ID code for identifying each terminal device. Terminal devices 200a, 200b, 20
0c is connected to the air conditioner 301, the television 302, and the lighting 303, respectively, and is wirelessly communicated with the central control device 100.

The air conditioner 301, the television 302,
The illumination 303 is connected to the terminal devices 200a, 200b,
For example, by inserting and connecting the device 200c, the central control device 100 can be connected to the terminal devices 200a, 200b, 2
It is possible to control various functions of the air conditioner 301, the television 302, and the lighting 303 via the 00c.

For example, when the air conditioner 301 is turned on by the centralized control unit 100, the centralized control unit 100 sets I to the terminal device 200a connected to the air conditioner 301.
The control signal with the D code is transmitted. Terminal device 2
When 00a confirms from the ID code of the received signal that the signal is addressed to itself, 00a transmits a device control signal for controlling the connected device to the air conditioner 301 in response to this control signal. The air conditioner 301 receives the device control signal received from the terminal device 200a, turns on the operation, and starts the operation corresponding to the device control signal.

Also, the terminal device 200a detects the state of the connected air conditioner 301 and notifies the centralized management device 100 of the information, either spontaneously or in response to a request from the centralized management device 100.

Thus, the air conditioner 301 and the television 30
2 and the illumination 303 are terminal devices 200a and 200, respectively.
Since the centralized management can be performed by the centralized management device 100 only by adding a function capable of transmitting and receiving data to and from b and 200c, it is possible to suppress an increase in manufacturing man-hours and costs due to system compatibility.

Further, the centralized control device 100 of the conventional example is
There is a batch power off button, which is set in advance for devices that will be turned off in the event of a disaster such as a disaster.In the event of a disaster, pressing this batch power off button can cause heat or fire in the event of a disaster. It is possible to turn off all devices that have In addition, a vibration sensor or the like is provided, and when the vibration level detected by the vibration sensor is equal to or higher than a predetermined value, the content is notified to the central control device 100 from the terminal device provided in the vibration sensor. Central management device 10
When 0 is received from the vibration sensor, 0 automatically turns off the preset device.

In this way, the device can be reliably turned off when an abnormality such as a disaster occurs, and a secondary disaster due to heat generation or ignition of the device can be reliably avoided.

[0010]

However, in the conventional centralized management system as described above, when the electric equipment to be controlled and managed is a home electric appliance, the electric equipment is restricted due to the restriction of the microcomputer mounted in the electric equipment. May not be able to perform sufficiently high-speed communication between the terminal and the terminal device.

In this case, even if high-speed communication can be performed from the centralized management device 100 to each terminal device, low-speed communication is performed from the terminal device to the electric equipment, and the communication response of the electric equipment to the control command from the centralized management device 100 is transmitted. There is a problem that it takes time and the communication performance of the centralized management device 100 and the terminal device cannot be fully utilized.

Further, when an abnormality occurs, preset devices can be automatically turned off at once from the central control device 100, but the abnormality is canceled due to the restriction of the microcomputer mounted on the electric equipment. Even when the electric device cannot be turned on by itself and remains in the off state, in order to return all the turned off devices to the state before the occurrence of the abnormality, the central control device 100 issues a command again to each device. It had a problem that it had to be sent.

The present invention solves the above-mentioned conventional problems. Even if the communication target electric equipment has low communication performance,
High control responsiveness can be obtained without deteriorating the communication performance of the centralized management unit and the terminal unit, and when the abnormality is cleared after the equipment is turned off when an abnormality occurs, the error immediately Provide a centralized management system that can return to the operating state.

[0014]

In order to solve the above-mentioned problems, a centralized management system of the present invention is a centralized management means for managing one or a plurality of electric devices via a communication network, and at least the electric devices. An operation state of the electric device from the centralized management means, the device including a device information storage unit that stores an operation state as device information, and a communication terminal unit that connects the electric device to the communication network. When the electronic message for confirming is received, the device information stored in the device information storage means is transmitted to the centralized management means.

As described above, even an electric device having a low communication performance can be managed without impairing the high speed communication inherent in the communication network.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A centralized management system according to claim 1 of the present invention is a centralized management means for managing one or a plurality of electric devices via a communication network, and at least an operating state of the electric devices. And a communication terminal unit for connecting the electric device to the communication network, the device managing unit stores the information as information, and confirms the operating state of the electric device from the centralized management unit. When a message is received, the device information stored in the device information storage means is transmitted to the centralized management means.

According to this structure, even an electric device having low communication performance can be managed without impairing the high-speed communication inherent in the communication network. The centralized management system according to claim 2 has the communication terminal means according to claim 1 with time interval measuring means for measuring a predetermined time interval, and at the predetermined time interval measured by the time interval measuring means. A telegram for confirming the operation state is transmitted to the electric device, and the device information based on the operation state transmitted from the electric device is stored in the device information storage means.

According to this structure, the operating state of the electric device is periodically confirmed and stored as the device information.
Make sure to save the device information. A centralized management system according to claim 3 further comprises a device operation detecting means for detecting that the communication terminal means according to claim 1 has been operated by an apparatus other than the communication terminal means, and the device operation detecting means. When a change in the operating state of the electrical device due to the operation on the electrical device is detected by the means, a message confirming the operating state is transmitted to the electrical device, and the operating state transmitted from the electrical device is displayed. The device information storage means is configured to store the device information based on the information.

According to this structure, the operating state of the electric device is confirmed and stored as the device information at the necessary and minimum frequency, so that the device information is surely saved. The centralized management system according to claim 4 is an existing system in which the communication terminal means according to claim 2 or 3 is stored in advance in new device information and device information storage means newly received from an electric device. When the new device information and the existing device information are different as a result of the comparison by the device information comparing unit, the device information comparing unit compares the device information with the device information. Therefore, a part different from the existing device information is stored in the device information storage means and transmitted to the centralized management means.

According to this structure, the operating state of the electric device is reliably notified to the central control device at a necessary and minimum frequency. A centralized management system according to claim 5 has the communication terminal means according to any one of claims 1 to 4 as control voltage detection means for detecting a control voltage value of an electric device, and the control voltage detection means. When the control voltage value detected by the means is zero, a message is not transmitted to the electric device.

According to this structure, when the electric power is not supplied to the electric device, the electronic message is not transmitted to the electric device. According to a sixth aspect of the present invention, there is provided a centralized management system in which the communication terminal means according to any one of the first to fourth aspects includes a control voltage detecting means for detecting a control voltage value of an electric device and the control voltage detecting means. An abnormality detection unit that detects an abnormality in the electric device based on the detected control voltage value, detects an abnormality in the electric device by the abnormality detection unit, and eliminates the abnormality. In this case, the device information stored in the device information storage means is transmitted to the electric device.

According to this structure, when an abnormality occurs in the electric equipment and then the equipment is restored, the operating state before the abnormality is generated can be promptly and surely restored. Hereinafter, a centralized management system showing an embodiment of the present invention will be specifically described with reference to the drawings. In all the drawings, the same reference numerals indicate the same or equivalent components or parts. (Embodiment 1) A centralized management system according to Embodiment 1 of the present invention will be described.

FIG. 1 is a block diagram showing the overall configuration of the centralized management system of the first embodiment. In FIG. 1, 1
Is a power line which is a communication medium, 11 is an air conditioner, 12 is a television, and 13 is an illumination, which are communication terminal devices 2a and 2 respectively.
It is connected to the electric power line 1 via b and 2c. The communication terminal devices 2a, 2b, 2c each have an identification number (ID) for identifying a destination on the power line 1.

Reference numeral 10 denotes a centralized management device for centrally managing control and status confirmation of electric devices via the electric power line 1. The electric devices such as the air conditioner 11, the television 12 and the lighting 13 communicate with each other. Terminal devices 2a, 2b, 2
managed via c.

Next, the communication terminal device in the centralized management system of the first embodiment will be described in detail. FIG. 2 is a block diagram showing the configuration of the communication terminal device 2a in the centralized management system (FIG. 1) of the first embodiment. In FIG. 2, a terminal communication processing unit 20 performs communication processing with other electric devices such as the centralized management device 10 via the power line 1. Specifically, it includes receiving a message from the central management device 10 to the communication terminal device 2a, transmitting a message from the communication terminal device 2a to the central management device 10, and the like. Incidentally, the communication speed using the electric power line 1 in recent years is very high from several kbps to several Mbps.

Reference numeral 21 denotes a device communication processing unit, which performs communication processing with an electric device, here, the air conditioner 11. Specifically, the operation command is transmitted to the air conditioner 11, the status notification information is received from the air conditioner 11, and the like. here,
In many cases, a microcomputer installed in a home electric appliance such as the air conditioner 11 has a minimum specification required for controlling the main body of the device due to cost reasons. Therefore, this microcomputer does not have enough room for high-speed communication of several Mbps, and only low-speed communication of several hundred bps to several kbps is possible.

Reference numeral 22 is a message processing unit, which analyzes the message received by the terminal communication processing unit 20 or the device communication processing unit 21 and creates a corresponding message if a new message needs to be transmitted. In addition, it has a function of storing the content of the received electronic message as device information in the device information storage unit 23, or reading necessary information from the device information stored in the device information storage unit 23.

Further, the electronic message processing section 22 voluntarily confirms the operating state of the air conditioner 11. By this operation, the operation state of the air conditioner 11 is read in advance in the device information storage unit 23 as device information. Regarding this, as shown in FIG. 3, the communication terminal device 2a measures a predetermined time interval for the timing of confirming the operating state of the air conditioner 11, and a time interval measuring unit for generating the time interval. 24 may be further provided.

In FIG. 3, the time interval measuring unit 24 starts the time measurement, and thereafter, when the measurement time reaches a predetermined value, transmits a measurement completion signal to the message processing unit 22 and measures the time. Reset the value. Message processing unit 22
When the measurement completion signal is received from the time interval measuring unit 24, the operation state is confirmed with respect to the air conditioner 11. Since this operation is performed at every predetermined time measured by the time interval measuring unit 24, the device information of the air conditioner 11 is stored in the communication terminal device 2
It can be reliably stored in the device information storage unit 23 in a.

The operation of the centralized control system configured as described above will be described below. Air conditioner 1
1 is in the cooling mode and is in the ON state. At this time, the centralized management device 10 transmits a message confirming the operation mode information of the air conditioner 11 via the power line 1 to the communication terminal device 2a. The terminal communication processing unit 20 of the communication terminal device 2a
Confirms that this message is addressed to itself, it will receive the message. The received electronic message is analyzed by the electronic message processing unit 22 as an electronic message for confirming the operation mode information of the air conditioner 11.

At this time, the electronic message processing unit 22 reads the operation mode information (in this case, the cooling mode) from the device information storage unit 23, and creates an electronic message for transmitting the contents to the central control unit 10. To do. The created telegram is transmitted from the terminal communication processing unit 20 to the centralized control unit 10 via the power line 1, and the centralized control unit 10 acquires that the operation mode of the air conditioner 11 is the cooling mode. .

In this case, since the device information of the air conditioner 11 is stored in the device information storage unit 23 in advance, the communication terminal device 2a receives the confirmation message of the device information from the centralized management device 10 even if the air conditioner 11 receives the confirmation message. Confirmation telegram for is not sent.

As described above, according to the centralized management system of the first embodiment, it is possible to obtain the device information corresponding to the air conditioner 11 without performing the low speed communication between the communication terminal device 2a and the air conditioner 11. Therefore, even if the communication performance of the electric device is low, it is possible to acquire the device information due to the high communication performance of the centralized management device 10 and the communication terminal device 2a.

As a result, it is possible to provide a centralized management system which suppresses the cost increase of the electric equipment, is easy to introduce, and has good responsiveness. (Second Embodiment) A centralized management system according to a second embodiment of the present invention will be described.

FIG. 4 is a block diagram showing the configuration of the communication terminal device 2a in the centralized management system of the second embodiment. In FIG. 4, reference numeral 25 denotes a device operation detection unit that detects that the air conditioner 11 has been operated independently, not from the central control device 10. This may be, for example, a remote control infrared signal detection device 25a that detects an infrared signal transmitted by a remote controller that operates the air conditioner 11. Further, it may be the operation sound detection device 25b that detects an operation sound generated when the air conditioner 11 is operated.

The operation of the centralized management system configured as described above will be described below. In FIG.
When the device operation detection unit 25 detects that the air conditioner 11 is operated by a remote controller, the device operation detection unit 25 transmits a device operation detection signal to the message processing unit 22. Message processing unit 22
Upon receipt of the device operation detection signal from the device operation detection unit 25, determines that the operating state of the air conditioner 11 has changed, and creates a telegram requesting the air conditioner 11 to notify the operating state. The created electronic message is transmitted from the device communication processing unit 21 to the air conditioner 11, and the air conditioner 11 receives the electronic message and determines the operating state of the air conditioner 11 via the device communication processing unit 21 in the communication terminal device 2a. And transmits it to the electronic message processing unit 22. The message processing unit 22 uses the received operating state of the air conditioner 11 as device information in the device information storage unit 23.
Save to.

Since this operation is performed only when the device operation detection unit 25 detects that the air conditioner 11 has been operated, the device information of the air conditioner 11 is stored in the device information storage unit 23 of the communication terminal device 2a. It can be surely saved at the necessary and minimum timing. As a result, when the communication terminal device 2a receives a telegram for operating the air conditioner 11 from the centralized management device 10, the device communication processing unit 21 confirms the operating state, so the transmission of the operation telegram is temporarily suspended and concentrated. Delay in response to the operation of the management device 10 can be reduced.

When the central control device 10 operates the air conditioner 11, the device operation detecting section 25 does not transmit the device operation detection signal. In this case, the communication terminal device 2a confirms that the device communication processing unit 21 has normally transmitted the operation message to the air conditioner 11, and then the message processing unit 22 determines the operation message based on the operation content of this operation message. The stored device information is stored in the device information storage unit 23. Thereby, the device information of the air conditioner 11 can be always stored in the device information storage unit 23.

The operation of confirming the device status from the central control device 10 to the air conditioner 11 can be performed in the same manner as in the first embodiment. As described above, according to the centralized management system of the second embodiment, in addition to the features of the first embodiment, the low-speed communication between the communication terminal device 2a and the air conditioner 11 is omitted, so that the device information is acquired. Since it can be performed reliably and with a minimum frequency, the central control device 10
It is possible to reduce the suspension of the operation message from.

As a result, it is possible to suppress the cost increase of the centrally managed electric equipment, to introduce it easily, and to improve the responsiveness.
Further, it is possible to provide a centralized management system with a small communication load on electric equipment. (Third Embodiment) A centralized management system according to a third embodiment of the present invention will be described.

FIG. 5 is a block diagram showing the configuration of the communication terminal device 2a in the centralized management system of the third embodiment. In FIG. 5, reference numeral 26 is a device information comparison unit that compares the new device information newly received by the device communication processing unit 21 from the air conditioner 11 with the existing device information stored in advance in the device information storage unit 23.

The operation of the centralized management system configured as described above will be described below. In FIG.
When the centralized management device 10 confirms the operating state of the air conditioner 11, the centralized management device 10 transmits a telegram confirming the operating state to the communication terminal device 2a. Communication terminal device 2
When receiving the electronic message for confirming this operation state, a reads the device information of the air conditioner 11 stored in the device information storage unit 23, and transmits the contents to the centralized management device 10.

When the air conditioner 11 is operated by a remote controller or the like, the operation state of the air conditioner 11 changes, so that the communication terminal device 2a needs to confirm the operation information.
This is because the communication terminal device 2a acquires an operating state from the air conditioner 11 at a predetermined time interval or when it is detected that the air conditioner 11 has been operated, as shown in the second embodiment.

That is, the air conditioner 11 transmits the operating state in response to the reception of a message confirming the operating state from the communication terminal device 2a. In the communication terminal device 2 a, the device information comparison unit 26 provided inside the electronic message processing unit 22 compares the received new device information of the air conditioner 11 with the existing device information stored in the device information storage unit 23. I do.

If the comparison result shows that there is a difference between the new device information and the existing device information, the message processing unit 22 updates the corresponding device information in the device information storage unit 23, and
A telegram for transmitting the device information of the air conditioner 11 to the centralized management device 10 is created. This message is transmitted from the terminal communication processing unit 20 to the centralized management device 10, and the centralized management device 10 can confirm the device information of the changed air conditioner 11. As the device information transmitted here, only the operation information changed in the air conditioner 11 is transmitted.

As described above, according to the centralized management system of the third embodiment, in addition to the features of the first embodiment, the operation of the air conditioner 11 from the communication terminal device 2a to the centralized management device 10 is performed at the minimum required frequency. Since the information is notified, the time for occupying the power line 1 for checking the operation information can be suppressed.

As a result, it is possible to provide a centralized management system having good responsiveness and a small communication load on the communication terminal device while suppressing an increase in the cost of the centrally managed electric equipment. (Fourth Embodiment) A centralized management system according to a fourth embodiment of the present invention will be described.

FIG. 6 is a block diagram showing the overall configuration of the centralized management system of the fourth embodiment. In FIG. 6, 3
Is a power line, which is a separate system from the power line 1. For example, the power line 1 is a single-phase 100 V line, and the power line 3 is a single-phase 20 V line.
It may be a 0V line. That is, the communication terminal device 2a,
2b and 2c are cases where communication is performed and power is supplied via the single-phase 100V line of the power line 1, and the air conditioner 11 is supplied with power from the single-phase 200V line of the power line 3.

FIG. 7 is a block diagram showing the configuration of the communication terminal device 2a in the centralized management system of the fourth embodiment. In FIG. 7, reference numeral 27 is a control voltage detection unit that detects the control voltage value of the air conditioner, 28 is a control voltage value that the control voltage detection unit 27 detects, and an instantaneous power failure occurs in the air conditioner 11. It is an instantaneous power failure detection unit that detects that.

The operation of the centralized management system configured as described above will be described below. In FIG.
When the communication terminal device 2a receives the electronic message via the terminal communication processing unit 20, the communication terminal device 2a analyzes the electronic message and creates a corresponding transmission electronic message when transmission to the air conditioner 11 is required. At this time, when the control voltage value of the air conditioner 11 detected by the control voltage detecting unit 27 is OFF (0V), this means that the power supply to the air conditioner 11 is not performed, and naturally the communication process is also performed. I can't.
At this time, the device communication processing unit 21 stops the transmission of the electronic message created by the electronic message processing unit 22 to the air conditioner 11. As a result, unnecessary communication processing can be omitted, and the load on the communication terminal device 2a can be reduced.

Further, when an instantaneous blackout occurs in the single-phase 200V line of the power line 3, the control voltage value detected by the control voltage detection unit 27 decreases for a very short period of time. The instantaneous power failure detection unit 28 temporally measures the control voltage value detected by the control voltage detection unit 27, but as shown in FIG. 8, the detected control voltage value Vcc decreases and αVcc (0 ≦ α ≦ If the time of 1) is within the predetermined interval t, it is determined that the instantaneous power failure has occurred in the air conditioner 11.

When an instantaneous power failure occurs in this way, even if the air conditioner 11 is operating in the ON state, the operation state after the power supply is restored remains in the OFF state, and it is necessary to return to the original operation state. , Remote control or centralized management device 10
It is necessary to perform the operation so that it is turned on again.

In the centralized management system of this embodiment, the air conditioner 11 is stored in the device information storage unit 23 of the communication terminal device 2a.
The operation information before the momentary power failure occurs is stored in.
Therefore, when the communication terminal device 2a detects the instantaneous power failure that has occurred in the air conditioner 11 by the instantaneous power failure detection unit 28, after the power failure is restored, the message processing unit 22 causes the device information storage unit 2 to operate.
In accordance with the operation information of the air conditioner 11 stored / saved in 3, an electronic message for operating the air conditioner 11 to return to the original operation condition is created, and the device communication processing unit 21 transmits the message to the air conditioner 11. As a result, the air conditioner 11 can be returned to the operating state before the momentary power failure.

As described above, according to the centralized management system of the fourth embodiment, in addition to the features of the first embodiment, even when an abnormality such as a momentary power failure occurs in the air conditioner 11, the communication terminal device 2a can operate. Since the operating state is stored, the operating state of the air conditioner 11 can always be restored.

As a result, it is possible to provide a centralized management system which is easy to introduce, has a good responsiveness, is resistant to disturbance, and is highly reliable, while suppressing the cost increase of the centrally managed electric equipment.

In the first to fourth embodiments, a power line is used as a communication network, but the effect of the present invention is not limited to this, and a communication network such as wireless, infrared ray or twisted pair line may be used. , A similar effect can be obtained.

[0057]

As described above, according to the first aspect of the present invention, it is possible to manage electric equipment having low communication performance without impairing the high speed communication inherent in the communication network. As a result, it is possible to realize a centralized management system which is easy to introduce and has good responsiveness while suppressing an increase in the cost of electric equipment.

According to the second aspect of the invention, the operating state of the electric device is periodically checked and stored as the device information, so that the device information can be reliably saved.
As a result, it is possible to realize a centralized management system having high responsiveness and high reliability.

According to the third aspect of the invention, the operating state of the electric device is confirmed and stored as the device information at the necessary and minimum frequency, so that the device information can be reliably saved. As a result, it is possible to suppress the communication load on the communication terminal device and the electric equipment, and to realize a centralized management system having high responsiveness and high reliability.

Further, according to the fourth aspect of the invention, it is possible to reliably notify the central management device of the operating state of the electric equipment at a necessary and minimum frequency. As a result, it is possible to realize a centralized management system with good responsiveness without occupying the communication network more than necessary.

Further, according to the fifth invention, it is possible to prevent the transmission of a telegram to the electric device when the electric power is not supplied to the electric device. As a result, it is possible to realize a centralized management system that eliminates unnecessary communication and further reduces the communication load on the communication terminal device.

According to the sixth aspect of the invention, when an abnormality occurs in the electric equipment and then the equipment recovers, it is possible to quickly and surely return to the operating state before the occurrence of the abnormality. As a result, it is possible to realize a centralized management system that is highly resistant to disturbance and highly reliable.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a centralized management system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a communication terminal device in the centralized management system according to the first embodiment.

FIG. 3 is a block diagram showing a configuration of another communication terminal device in the centralized management system according to the first embodiment.

FIG. 4 is a block diagram showing a configuration of a communication terminal device in the centralized management system according to the second embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a communication terminal device in the centralized management system according to the third embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a centralized management system according to a fourth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a communication terminal device in the centralized management system according to the fourth embodiment.

FIG. 8 is a characteristic diagram showing an example of a voltage value detected by a control voltage detection unit of the communication terminal device in the centralized management system according to the fourth embodiment.

FIG. 9 is a block diagram showing a configuration example of a conventional centralized management system.

[Explanation of symbols]

1, 3 power lines 2a, 2b, 2c communication terminal device 10 Central management device 11 air conditioners 12 TV 13 Lighting 20 terminal communication processing unit 21 Equipment communication processing unit 22 Message processing unit 23 Device information storage section 24-hour interval measurement unit 25 Equipment operation detector 26 Equipment information comparison section 27 Control voltage detector 28 Instantaneous power failure detector

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Taketo Chinomi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshihiro Hattori             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5K048 AA06 BA03 BA07 BA08 BA12                       DA02 DB01 DB04 DC01 DC04                       DC06 EB02 EB10 GB06 HA01                       HA02

Claims (6)

[Claims] 1. A central management unit for managing one or a plurality of electric devices via a communication network, and a device information storage unit for storing at least an operating state of the electric devices as device information. Communication terminal means connected to the communication network, and when the communication terminal means receives a telegram for confirming the operation state of the electric equipment from the centralized management means, stores it in the equipment information storage means. A centralized management system characterized by being configured to transmit the device information that is present to the centralized management means. 2. The communication terminal means has a time interval measuring means for measuring a predetermined time interval, and confirms an operating state of the electric device at the predetermined time interval measured by the time interval measuring means. The centralized management system according to claim 1, wherein the centralized management system is configured to transmit a telegram and store device information based on an operation state transmitted from the electric device by a device information storage means. 3. The communication terminal means includes equipment operation detecting means for detecting that the electric equipment is operated by a device other than the communication terminal means, and the electric equipment is detected by the operation for the electric equipment by the equipment operation detecting means. When a change in the operating state is detected, a message confirming the operating state is transmitted to the electric device, and the device information based on the operating state transmitted from the electric device is stored in the device information storage means. The centralized management system according to claim 1, wherein the centralized management system is configured. 4. The communication terminal means includes equipment information comparison means for comparing new equipment information newly received from an electric equipment with existing equipment information stored in advance in the equipment information storage means, and the equipment. As a result of the comparison by the information comparing means, when the new device information and the existing device information are different, the device information storage means stores a portion of the new device information different from the existing device information. The centralized management system according to claim 2 or 3, wherein the centralized management system is configured to be stored in the central management unit and transmitted to a centralized management unit. 5. The communication terminal means has a control voltage detecting means for detecting a control voltage value of the electric equipment, and when the control voltage value detected by the control voltage detecting means is zero, the electric voltage is sent to the electric equipment. The centralized management system according to any one of claims 1 to 4, wherein the centralized management system is configured not to transmit a message. 6. The communication terminal means includes a control voltage detecting means for detecting a control voltage value of an electric device, and an abnormality is present in the electric device based on the control voltage value detected by the control voltage detecting means. An abnormality detecting means for detecting that the abnormality of the electric equipment is detected by the abnormality detecting means, and when the abnormality is resolved, the equipment information stored in the equipment information storage means is stored in the electric equipment. 5. The device according to claim 1, wherein the device is configured to transmit to the user.
Centralized management system described in any of.