JPH0452753A - Load state display system for decentralized monitor control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Summary) Regarding a method of displaying the operating status of a distributed monitoring and control system, the load status of all processing devices at a given point in time is
The aim is to provide a load status display method that can quantitatively display information on display devices at multiple locations to grasp the operating status of the entire system. a response request transmitting unit that transmits a response request to each processing device via a communication line; a response time measuring unit that measures the time until a response; a measurement result editing unit that edits the measurement results; and a measurement result editing unit that edits the results of the measurement. The apparatus is configured to include a display section that compares the numerical value of the response time with a preset reference time to determine the degree of load on each device and displays it in an appropriate manner such as by color.

[Industrial Field of Application] The present invention relates to a method of displaying the operating status of a distributed monitoring and control system.

In supervisory control systems, a method is adopted in which signal processing is distributed among multiple computer devices for the purpose of distributing risks to prevent malfunctions, distributing loads to prevent overloads, and the like. In this distributed processing method, each device performs its assigned processing, and its operation and load differ from device to device. Therefore, in order to confirm the operating status of the entire system and the appropriateness of the division of functions, a load status display device is required that can tell how much load is being placed on each device.

[Conventional technology]

Conventionally, although not shown in the figure, it is possible to extract what kind of messages each device is receiving and transmitting from the communication line connecting each other, and to estimate the degree of load on each device. Record status data when the load increases (logging)
I left it behind and stopped at investigating the history behind it.

(Intelligence B to be Solved by the Invention) With such conventional methods, it is difficult to quantitatively know the load status of all devices in the system at a certain point in time. The object of the present invention is to provide a load status display method that quantitatively displays the load status of all processing units at a certain point on a display device at one location, thereby allowing the operating status of the entire system to be grasped.

[Means for Solving the Problem] This problem is to solve the problem, as shown in the principle diagram of FIG. 1 showing the basic configuration of the present invention. A display operation receiving unit 1a is installed for displaying a display word W1, and a display operation receiving unit 1a for receiving a display instruction for displaying a word W1, and a response request transmitting unit for transmitting a response request to each device 2 and 3 via a communication line 4 department], a response time measurement unit 1c that measures the time until a response, and a measurement result editing unit 1d that edits the measurement results.

The present invention is equipped with a display section 1e that compares the edited numerical value of the response time of each device with a preset reference time to determine the degree of load on each device and displays it in an appropriate manner such as by color. solved by.

[Operation] In the present invention, the display operation receiving section 1a of the display device 1 installed at one suitable location first receives an instruction to display the load status of each processing device 2, 3 and notifies the response request transmitting section 1b. . The response request transmitter 1b transmits a message requesting a response of processing completion to all the processing devices 2 and 3 in the system via one communication line 4 (solid line arrow in the figure). Further, the response request transmitting section 1b instructs the response time measuring section 1c to start time measurement at the same time as transmitting the message. When the response return units 2a and 3a of the processing devices 2 and 3 receive the message from the response request transmitter 1b, they transmit a response message to the display device 1 (dotted line arrows in the figure). The response time measurement unit 1c measures the time taken until the response message is received by the processing device 2. 7. Measure each of the processing devices 3. The results are passed to the measurement result editing section 1d.

The measurement result editing unit 1d edits the measured time and sends it to the display unit 1.The display unit 1e compares the edited response time value of each device with a preset reference time and displays the result of each device. The degree of load is determined and displayed in an appropriate manner such as by color.

[Embodiment] FIG. 2 is a block diagram showing the configuration of a load status display method of a distributed monitoring and control system according to an embodiment of the present invention,
This is an example of application to a building's central monitoring and control system. The display device 1 is a human-machine interface device that has a keyboard as a display operation receiving section 1a, and a display section 1e that is a CRT. The processing device 2 is a communication control device, and the processing device 3 is a data management storage device.

Further, the communication line 4 is an appropriate communication line connecting each device. 18 to 1c, 2a, and 3a are the same processing units as in FIG. Further, 1f is a response return section within the human-machine interface device.

When the operator uses the keyboard 1a to instruct the display of the load status of all devices in the system, the response request transmitter of the human machine interface device 1], +
1 sends a message requesting a response indicating the completion of processing to the response return unit 2a of the communication system jB1 device 2 and the response return unit 3a of the data management storage device 3. It also requests a similar response from the response return unit 1f in the human-machine interface device.

The response time measurement unit 1c is a response return unit 2 of the communication control device 2.
a, the response return unit 3a of the data management and storage device 3, and the response return unit 1 in the human machine interface device.
The response from f is monitored and the time from sending the request to receiving the response is measured for each partner. The response time from the response return unit If represents the load on the human-machine interface device 1 itself.

The CRT of the display section 1e compares the response time measured by the response time measurement section 1c and edited by the measurement result editing section 1d with a preset reference time to determine whether each processing device is under low load, medium load, or heavy load. It determines whether it is a load and displays it separately by assigning green, yellow, or red colors to each. Furthermore, if a response is not returned even after waiting for a certain limit of time, it is assumed that an abnormality has occurred in the device, and a red blinking display is displayed.

In this embodiment, a response request transmitting section 1b, a response time measuring section 1c + a measurement result editing section 1d, a response returning section 1f in the human machine interface device, a response returning section 2a of the communication control device 2, and a data management storage device 3 are used. The response sending unit 3a can also be implemented as software that operates in a multitasking environment for each device. In that case, the priority level of the software I/W of the response request transmitting section 1b, response time measuring section lc, and measurement result editing section 1d should be set high, and the response returning section 1f3 in the human machine interface device should be set to a high priority level.
By setting the priority level of the software of the response return unit 2a of the communication control device 2 and the response return unit 3a of the data management storage device 3 to a low priority level, the load state of each device can be known more accurately.

〔Effect of the invention〕

As explained above, according to the present invention, in a system in which processing is distributed among a plurality of processing devices, it is possible to quantitatively know the load status of each device in the system at any given time. Since the display of the load status can be collectively displayed on one display device, and the display can be visually identified using numerical values and colors, it is possible to obtain the effect that the operating status of the entire system can be easily grasped.

[Brief explanation of the drawing]

FIG. 1 is a principle diagram showing the basic configuration of the load status display method of the distributed supervisory control system of the present invention, and FIG. 2 is a block diagram showing the configuration of the load status display method of the distributed supervisory control system of the embodiment of the present invention. It is a diagram.

Claims (1)

[Claims] In a system where processing is distributed to a plurality of devices (2, 3), a display device (1) installed at one appropriate location is used to display the load status of each device that shares the processing of the entire system. The display device includes a display operation reception unit (1a) that receives display instructions, and a communication line (4) to each device (2, 3).
A response request transmitter (1b) that transmits a response request via a response request transmitter (1b), a response time measurement unit (1c) that measures the time until a response, a measurement result editor (1d) that edits the measurement results, and each edited A distributed type device characterized by being equipped with a display unit (1e) that compares the numerical value of the response time of the device with a preset reference time to determine the degree of load on each device and displays it in an appropriate manner such as by color. Load status display method for supervisory control systems.