JPH02272601A - Operation control device - Google Patents

Abstract

PURPOSE:To attain proper operation control corresponding to the using states of respective apparatuses by providing an operation control device with a means for reading out respective history data such as the operating states or maintenance control states of respective apparatuses stored in an apparatus history storing means and judging the operating order or the like of respective apparatuses. CONSTITUTION:Respective pumps 3-1 to 3-n of pump equipment are connected to a controller 10 through an I/O device 2 and a pump history storage device 11 is also connected to the controller 10 to form the history data, i.e. an operation time file 12, an operation frequency file 13, a failure history file 14, and a maintenance history file 15, of respective pumps 3-1 to 3-n. The controller 10 has an operation judging function for reading out data from respective files 12 to 15 and judging the operation order or the like of respective pumps 3-1 to 3-n. Consequently, proper operation control corresponding to the using states of respective apparatuses can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to an operation control device that controls the operation of, for example, a plurality of pumps.

(Prior Art) Such pump operation control devices include those applied to water purification plants and sewage treatment plants, among which pumps used in water purification plants include water intake pumps,
There are water transmission and distribution pumps, and there are many pumps used in sewage treatment plants, such as sewage pumps and rainwater pumps.

A plurality of these pumps are efficiently operated/stopped by a controller.

FIG. 3 is a configuration diagram of such a pump operation control device,
One pump 3-1 to 3-n is connected to the controller 1 via an input/output device 2.

Then, the controller 1 stores the operating time of each pump 3-1 to 3-n. A storage device 4 storing calculation data (hereinafter abbreviated as operation time data) is connected, and the input/output device 2 includes a matrix bin board for setting the operating order of each pump 3-1 to 3n. 5 is connected. Here, as a method of controlling the operation and stop of each pump 3-1 to 3-n, there is a method of making the operating time of each pump 3-1 to 3-n almost the same, that is, smoothing, and a method of controlling the operation time of each pump 3-1 to 3-n, and a method of controlling the operation time of each pump 3-1 to 3-n, and a method of controlling the operation time of each pump 3-1 to 3-n. There are two ways to start/stop the system. Among these methods, the method of smoothing the operating time is to store the operating time data of each pump 3-1 to 3-n in the storage device 4, and
When starting a pump, the pump with the shortest operating time up to now is determined from the operating time data, and a starting command is issued to this pump. When stopping a pump using this method, the pump with the longest operating time is determined from the operating time data and a stop command is issued to this pump.

In addition, the method of operating/stopping the pumps according to a preset order is such that the operator can select each pump 3-1 to 3-3 from the pin board 5.
The operating order of pumps 3-1 to 3-n is manually set and the pumps 3-1 to 3-n are operated/stopped according to this operating order. Note that the pinboard 5 may have a mechanical configuration or a configuration in which electronic switches are arranged on the screen of a CRT display.

However, each of the above methods has the following problems. First, in the method of smoothing the operating time, each pump 3-
Although the operating time of pumps 1 to 3-n up to now is known, the number of times each pump 3-1 to 3-n has been operated/stopped is not known. Therefore, for example, even if the pump is operated for a short time, the pump may be operated/stopped many times. In this case, the operating time is selected as being short, or the selected pump is operated/stopped 1. If the number of times of , is extremely high, the fatigue level of this pump will be high and a pump with a high probability of failure will be started.

Furthermore, the method of starting and stopping the pumps according to a preset order does not allow smooth operation of the pumps 3-1 to 3-n at all.

(Problems to be Solved by the Invention) As described above, with operation control based on operation time data, it is not possible to start/stop each pump depending on the usage condition such as the degree of fatigue of each pump. It may be activated. Furthermore, if the operating order is set in advance, smoothing of each pump cannot be achieved at all.

Therefore, an object of the present invention is to provide an operation control device that can perform appropriate operation control according to the usage status of each device.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides an equipment history storage that stores historical data such as the operating status and maintenance management status of each equipment in an operation control device that controls the operation of a number of stages of equipment. The present invention is an operation control device that attempts to achieve the above object by comprising: means for determining the operating order of each device by reading each history data stored in the device history storage means and determining the operating order of each device.

(Function) By providing such a means, when starting/stopping each device, each history data of the device history storage means that stores each history data such as the operation status and maintenance management status of each device is used for operation judgment. The information is read by means and the operating order of each device is determined.

(Example) Hereinafter, a case where an example of the present invention is applied to operation control of a pump will be described with reference to the drawings.

Note that the same parts as in FIG. 3 are given the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 1 is a configuration diagram of a pump operation control device.

Con! - Each pump 3-1 to 3-n of the pump equipment is connected to the roller 10 via the input/output device 2. Further, a pump history storage device 11 is connected to the controller 10. This pump history storage device 11 stores each pump 3-
Files storing historical data 1 to 3-n are formed, that is, an operating time file 12, an operating frequency file 13, a failure history file 14, and a maintenance history file 15. In the operation time file 12, each pump 31~
The operating time data of pump 3-n is stored, and this operating time data is obtained by counting up the operating signals sent to each pump 3-1 to 3-0 in minutes. Further, the operation number file 13 stores operation number data of each pump 3-1 to 3-n, and this operation number data detects the operation start state of each pump 3-1 to 3-n. It can be obtained by counting the The failure history file 14 contains minor failure data for each pump 3-1 to 3-n.

Three ranks (moderate and severe) are stored, and each failure data is formed from the date of occurrence, number of failures, impact on equipment, etc.This failure data can be automatically or by the operator. is input by the operation of .Furthermore,
The maintenance history file 15 stores data regarding the maintenance of the equipment, such as the actual condition of the equipment, the implementation status of overhauls, and the repair status when a failure occurs. In addition, when inspection and maintenance of pump equipment is carried out, depending on the contents of this inspection and maintenance, initialization of operation time data and operation count data, deletion of failure history data of the pump that has been inspected and maintained, etc. are performed. .

The controller 10 issues each command according to the program of the operation control flowchart shown in FIG. The driving judgment function that judges driving order etc. is H.

Next, the operation of the apparatus constructed as described above will be explained with reference to the operation control flowchart shown in FIG.

First, when performing operational control, we need operating time data.

Priority is given to operation frequency data and failure history data. For example, if the pump equipment is new or just after all equipment has been inspected and maintained, set the operating time as the top priority.
When the pump equipment has aged to a certain extent and the operating time of each pump has smoothed out, the number of operations data is given top priority. When the age of the pump equipment increases or when reliable operation is urgently required, failure history data is given top priority.

Hereinafter, a case will be described in which the failure history data is given the highest priority, followed by the operating time data, and then the operating frequency data. When the pump start timing occurs, the controller 10 starts each pump 3-3 in step s1.
Among pumps 1 to 3-n, select an operable pump that is not already in operation or undergoing one-time maintenance due to failure. Next, in step S2, the controller 10 stores the operating time data, operating frequency data, and failure history data of each operable pump in an operating time file 12. Read from the operation count file 13 and failure history file 14.

After reading each data in this way, the controller 10 determines the priority order of the operating time data, the number of operations data, and the failure history data in step s3. In this case, since the failure history data has the highest priority, the process moves to step s4. Investigate or search failure history data to select a pump with no history of failures.

Then, if the number of pumps selected in step S5 is one, the controller 10 starts the selected pump in step s6. However, as a result of the determination in step s5, if there are multiple pumps selected, that is, multiple pumps with the same failure record, the controller 10 moves to step s7 and prioritizes the operating time data and the number of operating data. In this case, since the second priority is the driving time data, the process moves to step s8. In this step s8, the controller 10 investigates the operating time data of each pump having the same failure record, and selects the pump with the shortest operating time from among these pumps. Then, in step s9, if there is one pump with the shortest operating time among the selected pumps, the controller 10 moves to step s6 and starts the selected pump. However, if it is determined in step s9 that there are multiple pumps with the same operating time data, the controller 10 moves to step slO, investigates the operating frequency data of each pump selected in step s8, and selects one of these pumps. Select the pump that has been operated the least number of times. Then, when the pump that has been operated the least number of times is selected, the controller 10 moves to step sB and starts the selected pump.

Next, a case will be described in which the operating time data is given the highest priority, followed by the operating frequency data, and then the failure history data. In this case, the controller 10 performs step s
Step 3 moves to step s14, where the operating time data is investigated and the pump with the shortest operating time is selected. Then, if there are no plural pumps with the same failure history among the selected pumps in step s14, the controller 10 starts the selected pumps in step s6. However, as a result of the determination in step s14, if there are multiple pumps with the same failure history among the selected pumps, the controller 10 moves to step sl[l and determines the priority order between the operation frequency data and the failure history data. However, in this case, the second priority is the number of operations, so step s1
7, in this step s17, the operation frequency data of each pump having the same operation time is investigated, and from among these pumps, for example, the pump with the least number of operations is selected. Next, in step s18, the controller 10 determines whether there is a plurality of pumps that have been operated the same number of times among the selected pumps, and if there are not a plurality of pumps, the process moves to step s6 and starts the selected pumps. However, if there are a plurality of pumps that have been operated the same number of times among the selected pumps, the controller 10 moves to step s19, investigates failure history data, and selects a pump with no failure history.

Then, the controller 10 moves to step s6 and starts the selected pump.

Next, a case will be briefly described in which the driving frequency data is given the highest priority, followed by the driving time data, and then the failure history data. In this case, the controller 10 executes steps s23 to s31. That is, in step s23, the pump that has been operated the least number of times is selected, and then, if there are a plurality of pumps that have been operated the same number of times among the selected pumps, the pump that has been operated the shortest time is selected in step 52 (i). Furthermore, if there are a plurality of pumps with the same operating time among the pumps selected based on the operating time, the failure history data is investigated in step s28, and a pump with no failure record is selected.

In this way, in the above embodiment, each pump 3-1 to
When controlling pump 3-n to start/stop, each pump 3-1 to
Since the operation order of each pump 3-1 to 3-n is determined by reading the operation time data, operation frequency data, and failure history data of pump 3-n, the past operation of each pump 3-1 to 3-n can be determined. It is possible to start the most suitable pump based on the situation and failure history. This eliminates the need to select pumps that are operated many times even if the operating time is short, and pumps 3-1 to 3-3 that are highly fatigued and have a high probability of failure.
I never choose n. Also, when choosing a pump,
Operating hours depending on the age of the equipment.

Priority is set based on the number of operations and failure history, so the most appropriate pump can be activated depending on the age of the equipment. Therefore, in emergency operation control, a pump with a high probability of failure is not selected and can be turned on later.

Furthermore, when the inspection and maintenance data is stored in the maintenance series file 15, various historical data such as operation time data and operation frequency data of the pump to be inspected and maintained are initialized, so that the condition of the pump equipment is The operation of each pump 3-1 to 3-n can be controlled using each historical data.

Note that the present invention is not limited to the above-mentioned embodiment, and may be modified without departing from the spirit thereof. For example, the present invention is not limited to controlling the operation of a pump, but may be applied to controlling the operation of a blower or a plurality of other devices.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide an operation control device that can perform appropriate operation control according to the usage status of each device.

[Brief explanation of drawings]

1 and 2 are diagrams for explaining one embodiment of the operation control device according to the present invention, in which FIG. 1 is a configuration diagram when applied to pump equipment, and FIG. 2 is a diagram for pump operation control. Flowchart, FIG. 3 is a block diagram of a conventional device. 2... Input/output device, 3-1 to 3-n... Pump, 1
0... Controller, 11... Pump history storage device, 12... Operation time file, 13... Operation count file, 14... Failure history file, 15... Maintenance history file.

Claims (1)

[Claims] In an operation control device that controls the operation of a plurality of devices, there is provided a device history storage means for storing historical data such as the operating status and maintenance management status of each of the devices, and a device history storage device that stores each historical data stored in the device history storage device. An operation control device characterized by comprising an operation determination means for reading and determining the operation order of each of the devices.