JPH0937363A - Central supervisory controller - Google Patents

Abstract

(57) Abstract: The present invention performs efficient data transmission according to the number of processing points of a terminal. A plurality of terminal devices 12-1 to 12-3 are connected to a center device 10 via a transmission line 11, and data transmission is performed between the center device 10 and the terminal devices 12-1 to 12-3. When performing, the transmission interface processing means 14 of each of the terminal devices 12-1 to 12-3 selects the field device 13- out of the plurality of transmission interface processing units 18-1 to 18-4.
The number of transmission interface processing units 18-1 to 18-4 that operates according to the increase or decrease in the number of data items 1 to 13-3 is changed and set. Then, even if the number of processing points of the field devices 13-1 to 13-3 is increased or decreased, data transmission can be performed with the center device 10 with the increased or decreased number of processing points.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a plurality of terminal devices to a center device via a transmission line, and outputs to the center device process signals such as state, measurement, control output, and setting input to these terminal devices. It relates to a central supervisory control device for transmission.

[0002]

2. Description of the Related Art For example, in a building, process signals such as the state, measurement, control output, and setting on each floor are collected to monitor and control the building.
FIG. 5 is a block diagram of such a central supervisory control device.

A plurality of terminal devices, for example, terminal devices 3-1 to 3-n are connected to the center device 1 via a transmission line 2. These terminal devices 3-1 to 3-n are arranged on each floor of the building, and operation control is performed on each field device 4-1 to 4-n on the corresponding floor,
Moreover, each process signal from each field device 4-1 to 4-n is input.

By the way, each of the terminal devices 3-1 to 3-n of such a central supervisory control device has a center device 1 respectively.
Each transmission interface for coupling with the above is provided. These transmission interfaces are used for the field device 4 of each terminal.
Since the type of process signal, that is, the number of processing points is different depending on -1 to 4-n, the number of transmission data, the data storage address to be used, and the number of memories are different according to the number of processing points, and it is necessary to make many design changes for each product. is there.

Therefore, each transmission interface of each terminal device 3-1 to 3-n fixes the interface by fixing the upper limit of the number of processing points in one terminal, that is, the number of transmission data for each terminal and the data storage to be used. Addresses and memory numbers are fixed.

For example, the upper limit of the number of processing points in each transmission interface of each terminal device 3-1 to 3-n is, for example, 10
Design with dots. Therefore, the number of processing points of the field device 4-1 is 1
If there are 0 points, the transmission interface of the terminal device 3-1 performs data transmission with 10 processing points. If the number of processing points of the field device 4-2 is 3, the transmission interface of the terminal device 3-2 performs data transmission at 3 points out of the processing points of 10 points, and further, the transmission interface of the field device 4-n. If the number of processing points is 20, the transmission interface of the terminal device 3-n will perform data transmission as a processing point of 20 points using two transmission interfaces or two terminal devices.

On the other hand, the center device 1 recognizes that the terminal device 3-1 has 10 processing points, the terminal device 3-2 has 3 processing points, and the terminal device 3-n has 20 processing points. Make a transmission.

However, in such a central supervisory control device, if the upper limit of the number of processing points in one terminal of each of the terminal devices 3-1 to 3-n is matched with a terminal having a large number of processing points such as an electric room and a machine room, for example. In other terminals with a small number of processing points, the number of unused points, that is, the memory increases, resulting in inefficiency. For example, in the terminal device 3-2, when the number of processing points is 10, the number of processing points is 3, so the remaining 7 points are unused processing points.

Further, if the upper limit of the number of processing points of each terminal device 3-1 to 3-n is suppressed, if the number of processing points is large, a large number of terminal devices must be installed, and the mounting density increases and Manufacturing costs are high.

[0010]

As described above, if the upper limit of the number of processing points of each of the terminal devices 3-1 to 3-n is matched with the terminal having a large number of processing points, the number of unused processing points increases, resulting in inefficiency. If the upper limit of the number of processing points is suppressed, a large number of terminal devices must be installed if the number of processing points is large.
Therefore, an object of the present invention is to provide a central supervisory control device capable of efficient data transmission according to the number of processing points of a terminal.

[0011]

According to a first aspect of the present invention, a terminal device is connected to a center device via a transmission line, and data transmission is performed between the center device and the terminal device to connect to the terminal device. In the central supervisory control device for performing supervisory control of the device, the terminal device is coupled with the center device via the transmission path, and the transmission interface processing means for changing and setting the number of processing points according to the number of data of the device, It is a central supervisory control device equipped with.

According to claim 1 which takes such means, when the terminal device is connected to the center device through the transmission line and data transmission is performed between the center device and the terminal device, The transmission interface processing means changes and sets the number of processing points according to the number of pieces of device data. By doing so, even if the number of processing points of the terminal increases or decreases, data transmission is performed with the center device with the increased or decreased number of processing points.

According to a second aspect of the present invention, the transmission interface processing means includes a plurality of transmission interface processing units having the number of processing points set therein, and central monitoring for changing and setting the transmission interface processing units operating according to the number of data of the equipment. It is a control device.

According to a second aspect of the present invention, when the terminal device is connected to the center device through the transmission line and data is transmitted between the center device and the terminal device, The transmission interface processing unit changes and sets the number of transmission interface processing units that operate according to an increase or decrease in the number of data of devices among the plurality of transmission interface processing units. By doing so, even if the number of processing points of the terminal increases or decreases, data transmission is performed with the center device with the increased or decreased number of processing points.

According to a third aspect of the present invention, the transmission interface processing means comprises a plurality of transmission interface processing sections with the number of processing points set, and these transmission interface processing sections add the address of the terminal device and the address of the transmission interface processing section. The central supervisory control device has a function of transmitting the data, reading the address of the terminal device and the address of the transmission interface processing unit added to the data from the sensor device, and receiving the data.

According to the third aspect of the present invention, when the terminal device is connected to the center device through the transmission line and data transmission is performed between the center device and the terminal device, The transmission interface processing means adds the address of the terminal device and the address of the transmission interface processing unit to transmit data, and reads the address of the terminal device and the address of the transmission interface processing unit added to the data from the sensor device. Receive data.

According to the present invention, the center device transmits the data by adding the address of the terminal device and the address of the transmission interface processing unit, and the address and transmission of the terminal device added to the data from the terminal device. It is a central supervisory control device having a function of reading an address of an interface processing unit and receiving data.

According to a fourth aspect of the present invention, when the terminal device is connected to the center device through the transmission line and data is transmitted between the center device and the terminal device, the center device is , The address of the terminal device and the address of the transmission interface processing unit are added for data transmission, and the address of the terminal device and the address of the transmission interface processing unit added to the data from the terminal device are read to receive the data.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a central supervisory control device applied to a building. Center device 1
0, a plurality of terminal devices, for example 3
Terminal units 12-1 to 12-3 are connected.

Of these terminal devices 12-1 to 12-3, the terminal device 12-1 is for the first floor (1F),
-1 is arranged for the second floor (2F), and the terminal device 12-3 is arranged for electricity and a power room.

As a result, the terminal device 12-1 sends a control signal to the field device 13-1 on the first floor, and process signals (state, measurement,
Signals for control, output, setting, etc.) will be input.

Similarly, the terminal device 12-1 sends the control signal to the field device 13-2 on the second floor and inputs the process signal from the field device 13-2, and the terminal device 12-3. Is the field equipment in the electric power room 13-
3 sends a control signal to the on-site equipment 13
The process signal from -3 is input.

These terminal devices 12-1 to 12-3 have a hard address (station number) on the transmission as viewed from the center device 10, that is, S to the terminal device 12-1.
T. NO. 1, ST. NO.
2, ST. NO. 3 is attached.

These terminal devices 12-1 to 12-3 have the same configuration, and the configuration will be described. Each of these terminal devices 12-1 has a transmission interface means 1
4, each function of the control processing unit 15 and the input / output processing unit 16 is provided.

The transmission interface means 14 is the transmission line 1.
1 is connected to the center device 10 and each floor,
It has a function capable of changing and setting the number of processing points according to the data type of the field devices 13-1 to 13-n in the electric and power rooms.

The concrete structure of the transmission interface processing means 14 is, as shown in FIG. 2, an interface switching processing circuit 17 and four transmission interface processing units 18-1.
18-4 and a memory 19.

The interface switching processing circuit 17 has a function of switching the connection between the center device 10 and each of the transmission interface processing units 18-1 to 18-4 via the transmission line 11.

Transmission interface processing units 18-1 to 18-18
-4 has an interface function with respect to a process signal having a preset number of processing points, for example, 10 processing points.

Further, these transmission interface processing units 18
-1 to 18-4 have a function of receiving an ON signal (ON signal) from the setting switch 20 and operating. That is, the setting switch 20 includes a switch for selectively setting the operating transmission interface processing units 18-1 to 18-4, and the selected transmission interface processing unit 18-
An ON signal is output to 1 to 18-4, and an OFF signal (OFF signal) is output to other transmission interface processing units.

Further, each of these transmission interface processing units 18-1 to 18-4 is provided with an internal transmission interface address (minimum configuration transmission interface processing number).

For example, the transmission interface processing section 18-
NO. 1. Transmission interface processing unit 18-
NO. 2. Transmission interface processing unit 18-
NO. 3, transmission interface processing unit 18-
NO. 3 is attached.

These transmission interface processing units 18-1
18-4 are transmission data Qa by adding the hard address of the terminal device 12-1, its own transmission interface address, and the data type (digital input, analog input, pulse integrated value, set value, operation data, etc.). Has the function of creating and transmitting data.

Further, these transmission interface processing units 18
-1 to 18-4 are transmission data Qb from the sensor device 1.
In response to this, the hard address of each terminal device added to this transmission data Qb and its own transmission interface address are read, and the data type (digital input, analog input, pulse integrated value, set value, calculation data, etc.) is read. Correspondingly, the respective memory areas 19-1 to 19-1 of the corresponding memory 19
19-4 has a function of expanding data.

Each memory area 19-1 of the memory 19
19-4 are the transmission interface processing units 18-1 to 18-4.
18-4 corresponds to each transmission interface address. The control processing unit 15 arithmetically processes the data received from the transmission interface processing unit 14 to form a process signal, writes the process signal in each of the memory areas 16-1 to 16-4 of the memory 16 corresponding to the transmission interface address, and The transmission interface processing means 14 reads out the process signals stored in the memory areas 16-1 to 16-4 of 16 to perform arithmetic processing and as data necessary for transmission.
The memory 19 has a function of writing in each of the memory areas 19-1 to 19-4 corresponding to the transmission interface address.

On the other hand, the center device 10 comprises a transmission interface processing section 30, a monitoring control processing section 31, a data storage memory 32, an operating section 33, a display section 34, a keyboard 35, and a CRT display 36.

The transmission interface processing section 30 is provided with a virtual address correspondence setting table 37 as shown in FIG. In this virtual address correspondence setting table 37, the hard address and the transmission interface address of each terminal device with respect to the soft address (virtual data address) on the data storage memory 32 are set.

The transmission interface processing unit 30 inputs the transmission data Qa from each of the terminal devices 12-1 to 12-3, and from the hard address and the transmission interface address added to the transmission data Qa, the data storage memory. It has a function of expanding data to 32 virtual data addresses.

Further, the transmission interface processing unit 30 reads out the data stored in the data storage memory 32 from the virtual address correspondence setting table 37, the hard address and the transmission interface address corresponding to the virtual data address, and these hard addresses are read. And the transmission interface address are added to the data, and the transmission data Qb
Has the function of transmitting data.

The monitoring control processing section 31 controls the terminal devices 12-1 to 12-3 based on the respective data of the terminal devices 12-1 to 12-3 stored in the data storage memory 32. Is output and each terminal device 12-1 to 12-1
Each unit has a function of displaying and outputting each of 2-3 data on the CRT display 36 through the display unit 34, inputting an operation command keyed from the keyboard 35 through the operation unit 33, and executing monitoring control according to the input. There is.

Next, the operation of the apparatus configured as described above will be described. Each of the terminal devices 12-1 to 12-3 has a transmission interface processing unit 18-1 to 18-1 in accordance with the number of processing points of the current equipment 13-1 and 13-2 on each floor, the electric equipment 13-3 of the power room, respectively. The number of operations of 18-4 is set.

These transmission interface processing units 18-1
18-4 are set by operating the setting switch 20. For example, the terminal device 12-1 is set as one, and the transmission interface address NO. The transmission interface processing unit 18-1 of No. 1 is set to operate.

Further, as the terminal device 12-2, the transmission interface address NO. The operation of the transmission interface processing unit 18-1 of No. 1 is set, and the terminal device 12-3
Transmission interface address NO. 1 to N
O. 3 each transmission interface processing unit 18-1 to 18-
3 is set to operate.

Therefore, each transmission interface processing section 18
Since each of -1 to 18-4 is preset with 10 processing points, the terminal device 12-1 has an interface function for a process signal of 10 processing points, and the terminal device 12-2 also has a processing point of 10 points. The terminal device 12-3 has an interface function for process signals of points, and the terminal device 12-3 has an interface function for process signals of 30 processing points.

The actual equipment 13-1, 13- on each floor
2. If the number of processing points of the electric and power room equipment 13-3 is changed, the number of operations of the transmission interface processing units 18-1 to 18-4 in the terminal devices 12-1 to 12-3 is changed. Is set. In this case, the number of processing points is 0-4
It is changed and set within 0 range.

In such an operation setting state of the transmission interface processing section, for example, in the terminal device 12-1,
The process signal from the field device 13-1 on the floor is input to the terminal device 12-1 and stored in the memory area 16-1 of the memory 16.

The control processing section 15 reads out the process signal stored in the memory area 16-1 of the memory 16 to perform arithmetic processing, and as data necessary for transmission, the memory area 19 of the memory 19 in the transmission interface processing means 14.
Write to -1.

Then, the transmission interface processing unit 1
8-1 is a hard address ST. N
O. 1, its own transmission interface address NO. 1,
Furthermore, the data type (digital input, analog input,
(Pulse integration value, set value, calculation data, etc.)
The transmission data Qa shown in is created, and this transmission data Qa is transmitted to the center device 10 through the transmission line 11.

On the other hand, in the center device 10, the transmission interface processing unit 30 inputs the transmission data Qa from each of the terminal devices 12-1 to 12-3, and the hard address and transmission interface added to this transmission data Qa. Address, eg hard address ST. NO. 1, transmission interface address NO. 1 to the virtual data address ST. NO. Expand the data to 1.

The monitoring control processing section 31 reads out each data of each of the terminal devices 12-1 to 12-3 stored in the data storage memory 32 by the virtual data address, the data type and the data point number, and the display section 34. Through CR
Display output on the T display 36.

Further, the monitor control processing section 31 has the terminal devices 12-1 to 12-3 read out from the data storage memory 32.
The control data is output to each of the terminal devices 12-1 to 12-3 based on each of the above data.

When there is an output request from the monitor control processing unit 31, the transmission interface processing unit 30 causes the data points (virtual data address, data type, point number) to be transmitted.
From hard address and transmission interface address,
For example, the hard address ST. NO. 1, transmission interface address NO. 1 is determined and these hard addresses ST. NO. 1 and transmission interface address NO. 1 is added to the data and the data is transmitted as the transmission data Qb.

When the transmission data Qb is transmitted from the center device 10 in this way, each of the terminal devices 12-1 to 12-3
Respectively input the transmission data Qb to confirm whether or not it is its own hard address, and in the confirmed terminal device, in this case the terminal device 12-1, the transmission interface processing unit 18
-1 receives the transmission data Qb from the sensor device 1 and receives the hard address ST. Of each terminal device added to the transmission data Qb. NO. 1, transmission interface address NO. The memory area 19- of the memory 19 that reads 1 and corresponds to the type of data (digital input, analog input, pulse integrated value, set value, operation data, etc.)
Expand the data to 1.

The control processing unit 15 arithmetically processes the data stored in the memory area 19-1 of the transmission interface processing means 14 into a process signal, and each memory area 1 of the memory 16 corresponding to the transmission interface address.
Write in 6-1 to 16-4.

As a result, the control data is sent to the field device 13-1 on the first floor, and the field device 1 is sent according to this control data.
3-1 operates. The above is the transmission operation in the transmission interface processing unit 18-1 of the terminal device 12-1,
Data transmission is performed in the other transmission interface processing units 18-2 to 18-4 by the similar transmission action.

As described above, in one embodiment,
The transmission interface processing units 18-1 to 18-4 having a set number of processing points, for example, 10 points are provided, and the operation numbers of the transmission interface processing units 18-1 to 18-4 are set to the field devices 13-1 to 13-3. Since there is a degree of freedom in the number of processing points in one terminal because the number of processing points is changed according to the number of data points, in this case, if the number of processing points per transmission interface processing section is 10, then four transmission interface processing sections will be used. By changing and setting the number of operations of 18-1 to 18-4, process signals can be processed in the range of processing points 0 to 40, and transmission processing is performed according to the number of processing points of the terminal without changing the transmission interface design for each product. Can be efficient.

Therefore, even if the number of processing points on each floor, electricity or power room is changed, the design is changed or each terminal device 12-1 to 12-
It can be easily dealt with without replacing 3. Besides,
Even if the number of processing points is large, it is not necessary to install a large number of terminal devices, so that the mounting density can be reduced and the manufacturing cost can be reduced.

The present invention is not limited to the above embodiment, but may be modified as follows. For example, the present invention is not limited to being applied to the central supervisory control device of a building, but may be applied to the central supervisory control device of various buildings such as factories.

[0058]

As described above, according to the first to fourth aspects of the present invention, it is possible to provide the central supervisory control device capable of efficient data transmission according to the number of processing points of the terminal.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a central supervisory control device according to the present invention.

FIG. 2 is a configuration diagram of a transmission interface processing unit in the device.

FIG. 3 is a schematic diagram showing a function of a transmission interface processing unit in the device.

FIG. 4 is a schematic diagram showing a frame format of transmission data.

FIG. 5 is a configuration diagram of a conventional device.

[Explanation of symbols]

10 ... Center device, 11 ... Transmission path, 12-1 to 12-3
... Terminal devices, 13-1 to 13-3 ... Field equipment, 14 ... Transmission interface means, 15 ... Control processing unit, 16 ... Input / output processing unit, 17 ... Interface switching processing circuit, 18-
1 to 18-4 ... Transmission interface processing unit, 19 ... Memory, 20 ... Setting switch, 30 ... Transmission interface processing unit, 31 ... Monitoring control processing unit, 32 ... Data storage memory.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04L 12/24 9466-5K H04L 11/08 12/26

Claims (4)

[Claims] 1. A central supervisory control for connecting a terminal device to a center device through a transmission line, performing data transmission between the center device and the terminal device, and performing supervisory control of equipment connected to the terminal device. In the device, the terminal device includes a transmission interface processing unit that couples with the center device via the transmission path and changes and sets the number of processing points according to the number of data of the device. Central monitoring and control device. 2. The transmission interface processing means comprises a plurality of transmission interface processing units having a set number of processing points, and changes and sets the transmission interface processing unit operating according to the number of data of the device. The central supervisory control device according to claim 1. 3. The transmission interface processing means comprises a plurality of transmission interface processing units having processing points set, and these transmission interface processing units add the address of the terminal device and the address of the transmission interface processing unit. 2. The central monitoring system according to claim 1, further comprising a function of transmitting data, reading the address of the terminal device and the address of the transmission interface processing unit added to the data from the sensor device, and receiving the data. Control device. 4. The center device adds the address of the terminal device and the address of the transmission interface processing unit to transmit data, and the address of the terminal device and the transmission added to the data from the terminal device. The central supervisory control device according to claim 1, having a function of reading an address of the interface processing unit and receiving data.