JP3366274B2 - Monitoring control device and monitoring control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control device and a supervisory control method for receiving a data collection request from a host device, receiving the data corresponding to the request from the subordinate device, and transmitting the data to the host device. It is about.

[0002]

2. Description of the Related Art Conventionally, as this type of supervisory control device,
There is a monitoring control device 1 as shown in FIG. The supervisory control device 1 includes upper devices 2a to 2c and lower devices 3a to 3f.
Each of which is electrically connected to the upper device 2a to
2c, for example one or more of the upper devices 2a, 2b to one of the lower devices 3a to 3f, for example the lower device 3a.
When the data collection request of the data is received, the data collection request is transmitted to the lower device 3a, the data corresponding to the request is received from the lower device 3a, and the upper devices 2a, 2
It has a function of transmitting the data to b.

[0003]

By the way, in the conventional supervisory control device 1, when data collection requests are received from two or more of the upper devices 2a to 2c, this data is one of the lower devices 3a to 3f. For example, when the data is contained in the lower-level device 3a, the data is collected from the lower-level device 3a and responded to two or more of the higher-level devices 2a to 2c.
In this method, when a plurality of upper devices 2a to 2c make a data collection request to the same lower device 2a, the lower device 2a performs data collection for each data collection request signal of each of the upper devices 2a to 2c. Since it was necessary,
There is a problem that the line load between the slave stations and the response to the higher-level devices 2a to 2c take time, and the efficiency of data collection is low.

The present invention has been made in view of the above circumstances, and it is possible to shorten the time required for data collection, and as a result, it is possible to perform data collection at a higher speed and An object of the present invention is to provide a supervisory control device and a supervisory control method that can improve efficiency.

[0005]

In order to solve the above problems, the present invention provides the following monitoring control device and monitoring control method. That is, the supervisory control device according to claim 1,
When electrically connected to each of the plurality of upper devices and the plurality of lower devices and receiving a data collection request of one of the plurality of lower devices from one or more of the plurality of upper devices, sends a data acquisition request to the lower-level device with the data, the lower with the data
In a supervisory control device for receiving data for a request from a device and transmitting the data to a higher-level device requesting the collection of the data, at least two of the plurality of higher-level devices substantially simultaneously, the plurality of lower-level devices. When a data collection request of one of the data is received, the data collection request is transmitted only once to the lower device having the data, and the data for the request is received from the lower device having the data, It is characterized by comprising processing means for transmitting the data to each of the higher-level devices that have been requested to collect the data.

According to a second aspect of the present invention, there is provided a supervisory control method, wherein one or more of a plurality of upper devices to one of a plurality of lower devices.
One is when receiving the acquisition request for the data having the de
Sends a data acquisition request to the lower-level device having a chromatography data, the data receiving data to the request from the lower device having a supervisory control to transmit the data to the host device requesting the collection of the data In the method, a step of identifying that at least two of the plurality of higher-level devices request to collect data of one of the plurality of lower-level devices at substantially the same time, and once for the lower-level device having the data. And a step of transmitting a data collection request only , and when receiving data corresponding to the request from a lower-level device having the data , transmitting the data to each higher-level device that has been requested to collect the data. It is characterized by that.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a supervisory control device and a supervisory control method of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a supervisory control device according to an embodiment of the present invention. A supervisory control device 11 according to the present embodiment is similar to the conventional supervisory control device 1 except that at least two host devices 2a to 2c are provided.
When, for example, one of the plurality of lower-order devices 3a to 3f, for example, a lower-order device 3a receives a data collection request from one of the plurality of lower-order devices 3a to 3f at the same time from the higher-order devices 2a and 2b, 1 is sent to the lower-order device 3a having the data. A processing unit (processing means) 12 is provided which transmits a data collection request only once, receives data corresponding to the request from the lower-level device 3a, and transmits the data to each of the higher-level devices 2a and 2b for which the data collection request is made. It is a thing.

The supervisory control device 11 is a host device 2a-2c.
The data collection request from the device is executed, and three upper devices (upper devices 2a to 2c) and six lower devices (lower devices 3a to 3f) are independently connected. The number of upper-level devices and lower-level devices connected can be appropriately changed within the range of the number of connectable lines of the monitor control device 11 as needed. The higher-level devices 2a to 2c transmit various data collection requests to the monitoring control device 11. The lower-level devices 3a to 3f collect data and return data in response to a request from the monitor control device 11.

Next, a processing method of the monitoring control apparatus before implementation will be described with reference to FIG. First, in the supervisory control device 11, whether the received data is a request from the higher-level devices 2a to 2c, a response from the lower-level devices 3a to 3f, or the current standby state for the lower-level devices 3a to 3f It is identified whether or not there is a request (step A1). Here, for example, when the data collection request is received from the higher-level device 2a, or when the target lower-level device, for example, the lower-level device 3a is waiting for data collection, whether the lower-level device 3a is collecting data or not. Is identified (step A2).

When the lower device 3a is collecting data, a collection waiting list is created in order to carry out the collection process again after the current collection process is completed (step A3). Further, when the lower-level device 3a is not collecting data, the higher-level device 2a that has issued the data collection request is written in the list as the data destination when the response data is received from the lower-level device 3a, as the response destination data ( Step A4).
Next, the target lower device 3a from the monitor control device 11
A data collection request is transmitted to (step A5).

Then, it is identified whether or not the data collection request to the lower device 3a is requested from the collection waiting list (step A6). When the data collection request to the lower device 3a is a request from the collection waiting list, the processed data is deleted from the collection waiting list (step A).
7). When the data collection response is received from the lower device 3a, it is transmitted to the higher device 3a in the response destination data list (step A8). Finally, the list of response destination data is deleted (step A9).

Next, a processing method after the supervisory control device is implemented will be described with reference to FIG. First, the supervisory control device 11 identifies whether the received data is a request from the upper device 2a to 2c or a response from the lower device 3a to 3f (step B1). Here, for example, when a data collection request is received from the higher-level device 2b, it is identified whether or not the target lower-level device, for example, the lower-level device 3a, is collecting data (step B2).

When the target lower-level device 3a is collecting data, in order to send a response from the lower-level device 3a being collected to the higher-level device 2b, which is the request source, data is added to the response destination data list. Perform (step B3). If the target lower-level device 3a is not collecting data, the higher-level device 2b that has issued the data collection request is set as the response destination.
Create a response destination data list (step B
4). Next, the monitor control device 11 transmits a data collection request to the target lower device 3a (step B5).

When the data collection response is received from the lower device 3a, it is transmitted to the higher device 2b in the response destination data list (step B6). Next, for all of the requesting higher-level devices 2a and 2b in the response destination data list,
It is confirmed whether a response has been sent (step B7). When a response is sent to all of the requesting higher-level devices 2a and 2b,
The response destination data is deleted (step B8). Even when the request source is the higher-level device 2a to 2c, the higher-level device 2a to 2c of the request source in the response destination data list
It is confirmed whether the response is transmitted to all, and when the response is transmitted to all of the requesting higher-order devices 2a to 2c, the data of the response transmission destination is deleted, and the same processing as the above is performed. You can

According to this embodiment, the host devices 2a to 2c
Of at least two of the upper devices 2a and 2b at substantially the same time, when a data collection request of one of the plurality of lower devices 3a to 3f, for example, the lower device 3a is received,
A data collection request is transmitted only once to the lower-level device 3a having the data, the data for the request is received from the lower-level device 3a, and the data is transmitted to each of the higher-level devices 2a and 2b for which the data collection request is made. When the data collection request is received from the higher-level device 2b for the lower-level device 3a during data collection, it is not necessary to perform the data collection for the lower-level device 3a again, and the monitoring control device 11 is provided. -The transmission load between the lower devices 3a can be reduced. Therefore, the response time to the higher-level device 2b that has made a subsequent data collection request can be shortened, data can be collected at a higher speed, and the efficiency of data collection can be improved.

According to the supervisory control method of this embodiment, it is identified that at least two of the upper devices 2a to 2c have made a request for collecting data possessed by one of the lower devices 3a to 3f at substantially the same time, and the data is collected. Since the data collection request is transmitted only once to the lower device 3a, the data corresponding to the request is received from the lower device 3a, and the data is transmitted to each of the upper devices 2a and 2b for which the data collection request is made. 1 for lower-level device 3a having data
It is only necessary to transmit the data collection request only once, and the transmission load between the monitoring control device 11 and the lower-level device 3a can be reduced.

Although one embodiment of the supervisory control device and the supervisory control method of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment, and deviates from the gist of the present invention. It is possible to change the design within the range not to do. For example, even when there is a request from the plurality of upper devices 2a to 2c to collect the data of the plurality of lower devices 3a to 3f, the same effect can be obtained.

In addition, three host devices (host devices 2a-2
c) and six lower devices (lower devices 3a to 3f) are directly connected to the monitoring control device 11, but the upper device 2
Other devices may be interposed between the a to 2c and the supervisory control device 11, or between the subordinate devices 3a to 3f and the supervisory control device 11.

[0019]

As described above, according to the supervisory control device of the present invention, when a data collection request is received from at least one of a plurality of higher-level devices for a lower-level device during data collection, the lower-level device is restarted. However, it is not necessary to collect data, and it is possible to reduce the transmission load between the supervisory control device and the lower device. Therefore, it is possible to shorten the response time to the higher-level device that has made a subsequent data collection request, can perform data collection at a higher speed, and can improve the efficiency of data collection.

According to the monitoring control method of the present invention, over a plurality
From at least two of the position devices at substantially the same time, below the plurality of
Identifies that collection request data is made one having a position device, transmits a data acquisition request only once to the lower device having the data, lower instrumentation with the data
When receiving the data for the request from the location,該De
Since the data is transmitted to each of the upper devices that have been requested to collect data, it is sufficient to transmit the data collection request only once to the lower device having the data. The transmission load between the devices can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a monitoring controller according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing method before implementation of the supervisory control device of one embodiment of the present invention.

FIG. 3 is a flowchart showing a processing method after implementation of the supervisory control device of one embodiment of the present invention.

FIG. 4 is a schematic configuration diagram showing a conventional monitoring control device.

[Explanation of symbols]

11 Monitoring and control equipment 12 Processing unit (processing means) A1-A9 steps B1-B8 steps

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiharu Ito 1-403, Kosugi-cho, Nakahara-ku, Kawasaki-shi, Kanagawa NEC Telecom Systems Stock Company In-house (72) Inventor Yasuyuki Oe 1-chome, Kosugi-cho, Nakahara-ku, Kawasaki, Kanagawa 403 Japan Electric Telecom System Stock Company In-house (56) Reference JP-A-2-94941 (JP, A) JP-A-5-2111686 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) H04Q 9/00

Claims (2)

(57) [Claims] 1. A plurality of upper devices and a plurality of lower devices are electrically connected to each other, and one or more of the plurality of upper devices requests collection of data possessed by one of the plurality of lower devices. when receiving and transmitting data collection request to the lower device having the data, said data
In a supervisory control device for receiving data for a request from a lower-level device having a data and transmitting the data to a higher-level device requesting to collect the data, at least two of the plurality of higher-level devices at substantially the same time,
When a data collection request of one of the plurality of lower devices is received, the data collection request is transmitted only once to the lower device having the data, and the data is included.
When data for the request is received from the lower device
In addition, the supervisory control device is provided with a processing means for transmitting the data to each of the higher-level devices that have been requested to collect the data. When 2. A which has received the acquisition request for the data and one having of a plurality of lower-level device from one or more of the plurality of host systems, transmits the data collection request to the lower-level device with the data and receives data to the request from the lower apparatus <br/> with the data, the monitoring control method for transmitting the data to the host device requesting the collection of the data, at least of said plurality of host systems From two at about the same time,
Identifying that a data collection request of one of the plurality of lower-level devices has been made, transmitting a data collection request only once to the lower-level device having the data, and a lower-level device having the data When the data corresponding to the request is received from the device, the monitoring control method comprises the step of transmitting the data to each higher-level device for which the data collection request is made.