JPH09181732A - Data transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save space of the data transmitter of a monitor controller of a base station side and to reduce the cost when plural monitor controllers are managed centralizingly by the monitor controller of the base station side in the monitor controller used for a control panel for a receiving and distribution installation and an air-conditioner installation. SOLUTION: The transmitter CCU0 is made up of a management loop L provided with a base station port P0 and terminal ports P1-Pn, and a system controller CTL connects each of the terminal ports P1-Pn to the base station port P0 in the management loop L in time sharing manner sequentially. Furthermore, a specific bit of data to the ports P0-Pn is monitored and when fault information or information requiring urgency such as a drive stop instruction is discriminated from the bit above, a corresponding terminal port connects to the base station port P0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for a supervisory control system constructed to centrally manage a plurality of supervisory control devices installed at remote locations such as a power receiving and distribution control panel of a building and an air conditioning control panel. The present invention relates to a data transmission device used for.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a schematic configuration of a typical prior art supervisory control system. In a building or the like, monitoring control devices a0, a1, ..., An are provided to centrally monitor and control power reception and distribution, air conditioning, and the like. In each of the plurality of monitoring control devices a0 to an, the remaining plurality of monitoring control devices a1 to an arranged at a remote place are monitored by the monitoring control device a0 in order to improve efficiency of maintenance and management work and reduce personnel. The supervisory control system is constructed so as to centrally manage.

Therefore, a structure for transmitting and receiving data is required between the supervisory control device a0 to be managed and the supervisory control devices a1 to an to be managed. Therefore, in each of the monitoring control devices a1 to an, the system control devices scu1 to scun connected to the control targets such as loads and the management loops r1 to rn to which a large number of input units such as sensors are connected are transmission devices. ccu1
It is connected to each ccun. Correspondingly,
On the supervisory control device a0 side, in the management loop r0 to which the system control device scu0 is connected, the transmission devices ccu are connected.
1 to ccun individually corresponding transmission devices ccua1 to
ccuan is connected. Corresponding transmission device cc
u1 to ccuun and ccua1 to ccuan are connected at a ratio of 1: 1 via dedicated telephone lines k1 to kn, respectively.

[0004]

In the above-mentioned prior art supervisory control system, each supervisory controller a1-an via the telephone lines k1-kn is dedicated to the management loop r0 on the supervisory controller a0 side. Transmission devices ccua1 to ccua
It can only be connected via n.

Therefore, the number of supervisory control devices to be managed n
Is increased, the transmission device ccua is transmitted on the monitor control device a0 side.
There is a problem that 1 to ccuan increases, a large space is required in the monitor control panel, and the cost increases.

It is an object of the present invention to provide a data transmission device which can save space and reduce cost.

[0007]

A data transmission device according to the present invention is a data transmission device interposed between a centralized supervisory control device and a plurality of managed supervisory control devices managed by the centralized supervisory control device. In the above, a terminal port to which each of the managed monitoring and control devices is individually connected, a base station port to which the centralized monitoring and control device is connected, and each of the terminal ports are connected to the base station port at predetermined intervals. Switching control means for enabling data transmission between each managed monitoring control device and the centralized monitoring control device, and data from at least one of the centralized monitoring control device and each managed monitoring control device. Specific data monitoring means for connecting the managed monitoring control device corresponding to the data and the centralized monitoring control device to the switching control means when the predetermined data is monitored. Characterized in that it contains.

According to the above configuration, the data transmission device is
A network is composed of base station ports and terminal ports, and a plurality of managed monitoring control devices and centralized monitoring control devices can be connected using the common data transmission device.

Further, at this time, predetermined data regarding a specific supervisory control device or all the supervisory control devices, for example, failure data from the managed supervisory control device side and operation stop data from the centralized supervisory control device side responding thereto, etc. When the predetermined data is detected, the managed monitoring control device corresponding to the data and the centralized monitoring control device are preferentially connected to each other, and the predetermined data can be transmitted.

In this way, even if the number of monitored and controlled devices to be managed increases, the data transmission device can be shared, and space saving and cost reduction can be achieved.
In such sharing, a large delay does not occur in the transmission of urgent data such as the failure.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Regarding one embodiment of the present invention,
The following is a description based on FIG. 1 and FIG.

FIG. 1 shows a transmission device C according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of CU0, and FIG. 2 is a diagram for explaining a supervisory control system in which the transmission device CCU0 is used. Referring to FIG. 2, this monitoring control system includes monitoring control devices A0, A1 to An such as power reception and distribution control panels and air conditioning control panels provided in buildings and the like, and a plurality of remotely arranged monitoring control devices A1 to A1. An is configured to be centrally managed by the common supervisory control device A0.

Two system control units SCU01 and SCU02, one for steady operation and one for backup, are connected to the general control loop R0 of the supervisory control unit A0 on the management side which is a base station, and the control loop R01 in the own building is connected. , R02
A loop connecting device T01 for connecting the
, And the transmission device CCU0 are connected.
In the management loops R01 and R02 to which the loop connecting devices T01 and T02 are respectively connected, the terminal connecting device T01
, T012, ...; T021, T022 ,. A control target such as a switch and a detection target such as a voltmeter are connected to each of the terminal connection devices T11, T12, ....

The system control unit SCU01 comprises a microcomputer and its associated memory and interface device, and the like. The external memory M01 and the display device CRT0 are connected via a bus line B01.
1 and the printer PRT01 and the like. The system control unit SCU02 has the same configuration and is connected to the external memory M02, the display device CRT02, the printing device PRT02, and the like via the bus line B02.

On the other hand, in the supervisory control devices A1 to An on the managed side which are terminal stations, the small-scale supervisory control device A1 is
A transmission unit CCU1 connected to the transmission unit CCU0 via a dedicated telephone line K1, and a system control unit SCU
1 and the system control device S via the bus line B1.
External memory M1 connected to CU1, display device CRT1
And a printer PRT1 and the like.

The medium-to-large-scale supervisory control unit A2 is provided with a transmission unit CCU2 connected to the transmission unit CCU0 via a telephone line K2, a system control unit SCU2, a local management loop R2, and the like. It is configured. An external memory M2, a display device CRT2, a printing device PRT2, etc. are connected to the system control device SCU2 via a bus line B2.

Further, the system control unit SCU2 and the transmission unit CCU2 are connected to the management loop R2, and the loop connecting units T21, T22, ... Are connected. A large number of terminal connection devices T211,
T212, ... are connected, and similarly, the loop connection device T22
The management loop R22 configured by the terminal connection device T22
1, T222, ... Are connected. Each terminal connection device T
211, T212, ...; T221, T222, ...
A control target such as the switch and a detection target such as a voltmeter are respectively connected.

The remaining supervisory control devices A3 to An are also constructed in the same manner as or similar to the supervisory control device A1 or A2.

Referring to FIG. 1, the transmission unit CCU0 has telephone lines K1 to Kn from the respective supervisory control units A1 to An.
Is individually configured to correspond to the terminal ports P1 to Pn, a base station port P0 corresponding to the general control loop R0 of the own station, and a system controller CTL.

Port P in system controller CTL
The processing relating to 0 to Pn is multitasked, and the system control device CTL uses the transmission devices CCU1 and CCU.
2, and so on, and the base station port P0 has a predetermined cycle for each of the terminal ports P1 to Pn, for example, when n = 2, 2 seconds is set as a unit cycle, and 1 is set within the unit cycle. Connections are made sequentially for each second, enabling bidirectional data communication.

The system controller CTL monitors a specific bit of data input to each of the ports P0 to Pn, and from the flag set in the specific bit, for example, the monitor controller A1 on the terminal side. When data indicating that a failure has occurred in .about.An is input, the monitor control device, for example, the terminal port P2 of A2, is connected to the monitor control device to be originally connected, for example, the terminal port P3 of A3.
Instead of this, it is preferentially connected to the base station port P0 of the monitoring control apparatus A0. In addition, a specific bit is also monitored in the data from the monitoring control device A0 side, and when a flag corresponding to an operation stop command is determined, for example, a terminal for the monitoring control device corresponding to the operation stop command, for example, A2. The port P2 is preferentially connected to the base station port P0.

In this way, the supervisory control devices A0-An are
By constructing a network with the ports P0 to Pn for each terminal, and sequentially connecting the supervisory controllers A1 to An on each terminal side to the supervisory controller A0 on the base station side by time division multiplexing. ~ An is required to be shared with the base station side transmission device CCU0, specific data that is urgent is constantly monitored, and when the specific data is detected, a monitoring control device corresponding to the specific data is detected. , A2 is connected to the monitoring controller A0. Thus, space saving and cost reduction can be achieved without causing a large response delay.

[0023]

As described above, in the data transmission apparatus according to the present invention, the terminal port to which each managed monitoring and control apparatus is individually connected is connected to the base station port to which the centralized monitoring and control apparatus is connected. When a predetermined data such as failure data or operation stop data is detected by enabling data transmission and monitoring data from at least one of the monitoring control devices, a managed monitoring control device corresponding to the data is provided. The central supervisory control device is connected preferentially.

Therefore, it is possible to connect a plurality of managed monitoring control devices and a centralized monitoring control device by using the common data transmission device, and even if the number of managed monitoring control devices increases. , Can share the data transmission device,
Space saving and cost reduction can be achieved. Further, when the predetermined data is detected, the managed monitoring control device corresponding to the data and the centralized monitoring control device are preferentially connected to enable the transmission of the predetermined data. In order to realize this, a large delay will not occur in the transmission of urgent data such as the above failure.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a transmission device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a supervisory control system in which the transmission device is used.

FIG. 3 is a block diagram showing a schematic configuration of a typical prior art supervisory control system.

[Explanation of symbols]

A0 supervisory control device (centralized supervisory control device) A1 to An supervisory control device (managed supervisory control device) CCU0 transmission device CCU1 to CCUn transmission device CTL system control device (switch control means, specific data monitoring means) P0 port (base station Port) P1 to Pn Port (terminal port) SCU01, SCU02 System control device SCU1, SCU2 System control device T01, T02 Loop connection device T21, T22 Loop connection device T011, T012; T021, T022 Terminal connection device T211, T212; T221, T222 terminal connection device

Claims (1)

[Claims] 1. A data transmission device interposed between a centralized monitoring control device and a plurality of managed monitoring control devices managed by the centralized monitoring control device, wherein each managed monitoring control device is individually A terminal port to be connected, a base station port to which the centralized monitoring control device is connected, and each terminal port is connected to a base station port at a predetermined cycle, and each managed monitoring control device and centralized monitoring control device are connected. A switching control unit that enables data transmission between the central monitoring control device and at least one of the managed monitoring control devices, and when predetermined data is detected, A data transmission device, wherein the switching control means includes specific data monitoring means for connecting a managed monitoring control device corresponding to the data and a centralized monitoring control device.