KR20210025823A - Abnormality check system of equipment and facilities - Google Patents

Abstract

The present invention provides a system for checking the presence or absence of abnormalities of equipment and facilities, which can be supplemented by checking the presence or absence of abnormalities in time series data. The system of the present invention includes: a plurality of node units for receiving time series data from at least one of equipment and sensors; a gateway unit connected to the plurality of node units to receive the time series data from the plurality of node units and integrating the time series data based on time; and a situation room server unit for receiving the time series data from the gateway unit and determining whether an error or a defect exists in the time series data.

Description

Abnormality check system of equipment and facilities}

The present invention relates to a system and method for checking the presence of abnormalities in equipment and facilities that can be supplemented by checking whether there is an abnormality in time series data.

In general, a water treatment system can be classified into a water treatment system, a wastewater treatment system, and a water resource management system according to the raw water to be treated, and the conditions are varied depending on the water treatment place and the amount of treatment, so they are configured, installed, operated, and managed in various ways.

In addition, the water treatment system is controlled by a programmed water treatment control system, an abnormal state is determined and notified to an administrator, or remote monitoring is configured to ensure stable operation.

Such a water treatment system must be continuously and stably operated in any case due to widespread damage when the water treatment system is stopped. To this end, various monitoring technologies have been developed to detect abnormal conditions early.

The present invention relates to an abnormality checking system of equipment and facilities capable of checking and supplementing the abnormality of time series data. This does not limit the scope of the present invention.

An aspect of the present invention is a plurality of node units for receiving time series data from at least one of an equipment and a sensor, and a plurality of node units connected to the plurality of node units to receive the time series data from the plurality of node units based on time. It provides a system for checking equipment and facilities abnormality, including a gateway unit for integrating the time series data, and a control room server unit for receiving the time series data from the gateway unit and determining whether errors or defects exist in the time series data.

The control room server unit may determine whether the time series data is continuous, and if it is not continuous but discontinuous, it may determine that there is a defect in the time series data.

The control room processor compares the time series data corresponding to a specific time before/after, and when the measurement value corresponding to a specific time shows a large difference from the measurement values before/after, it can be determined that there is an error in the data. have.

When an error or defect exists in the time series data, the control room server unit may instruct the gateway unit to retransmit the error or missing time series data.

The gateway unit may transmit the time series data to the control room server unit when storing the error or missing time series data, and may command the node unit to transmit the time series data to the control room server unit when not storing the time series data.

When the control room server unit fails to receive a logical data type Boolean signal output from the device, it may determine that the device is faulty.

When the control room server unit repeatedly receives the same received time series data, it may be determined as an abnormality in the node unit.

The gateway unit may include a master gateway, a slave gateway, and a virtual gateway.

Other aspects, features, and advantages other than those described above will become apparent from the detailed contents, claims, and drawings for carrying out the following invention.

The system for checking for abnormalities in equipment and facilities according to an embodiment of the present invention can improve reliability by determining errors and defects in time series data and supplementing the data.

The system for checking equipment and equipment abnormalities according to an embodiment of the present invention can easily detect and supplement equipment and equipment abnormalities through an HMI.

The system for checking equipment and facilities for abnormality according to an exemplary embodiment of the present invention may check equipment and equipment for abnormalities in various ways.

Of course, the scope of the present invention is not limited by these effects.

1 is a block diagram schematically showing a system for checking for abnormalities in equipment and facilities according to an embodiment of the present invention.
2 is a table schematically showing time series data of a system for checking equipment and facilities for abnormality according to an embodiment of the present invention.
3 is a table schematically showing integrated time series data of a system for checking equipment and facilities for abnormality according to an embodiment of the present invention.
4 is a flowchart schematically illustrating a method of determining and supplementing time series data errors/defects of the system for checking for abnormalities in equipment and facilities according to an embodiment of the present invention.

Hereinafter, various embodiments of the present disclosure will be described in connection with the accompanying drawings. Various embodiments of the present disclosure may have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and related detailed descriptions are described. However, this is not intended to limit the various embodiments of the present disclosure to specific embodiments, and it should be understood that all changes and/or equivalents or substitutes included in the spirit and scope of the various embodiments of the present disclosure are included. In connection with the description of the drawings, similar reference numerals have been used for similar elements.

Expressions such as "include" or "may include" that may be used in various embodiments of the present disclosure indicate the existence of a corresponding function, operation, or component that is disclosed, and an additional one or more functions, operations, or It does not limit the components, etc. In addition, in various embodiments of the present disclosure, terms such as "include" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, It is to be understood that it does not preclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

In various embodiments of the present disclosure, expressions such as "or" include any and all combinations of words listed together. For example, "A or B" may include A, may include B, or may include both A and B.

Expressions such as "first", "second", "first", or "second" used in various embodiments of the present disclosure may modify various elements of various embodiments, but do not limit the corresponding elements. Does not. For example, the expressions do not limit the order and/or importance of corresponding elements. The above expressions may be used to distinguish one component from another component. For example, a first user device and a second user device are both user devices and represent different user devices. For example, without departing from the scope of the rights of various embodiments of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" or "connected" to another component, the component is directly connected to or may be connected to the other component, but the component and It should be understood that new other components may exist between the other components. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it will be understood that no new other component exists between the component and the other component. Should be able to.

The terms used in various embodiments of the present disclosure are only used to describe a specific embodiment, and are not intended to limit the various embodiments of the present disclosure. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Unless otherwise defined, all terms including technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present disclosure belong.

Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in various embodiments of the present disclosure, ideal or excessively formal It is not interpreted in meaning.

Hereinafter, the system may be at least one of, some of, or all of a computer program for executing a configuration of devices, a method of operating these devices, a computer program for executing a method of operating the devices, and a medium in which a computer program is recorded.

1 is a block diagram schematically showing a system for checking for abnormalities in equipment and facilities according to an embodiment of the present invention. The system for checking for abnormalities in equipment and facilities according to the present embodiment may include a node unit, a gateway unit, and a field server unit. In addition, the system for checking equipment and facilities for abnormality may further include a headquarters server unit. Here, the node unit, the gateway, and the field server unit may be facilities.

The node unit receives time series data from at least one of an equipment and a sensor. The node unit refers to a connection point and is programmed to recognize, process, or forward data transmission. In addition, the node unit refers to an activated electronic device that attaches to a network to create information to be transmitted and exchanges it over a communication channel. Of course, the node portion is not limited thereto.

Here, the equipment may be a water valve, a pump, an air compressor, a heat exchanger, or the like. In addition, the equipment may be a water supply facility installed in a water purification plant and a sewage treatment plant. Of course, the equipment is not limited thereto, and the equipment may be a facility that is installed in a plant or the like and consumes energy.

In addition, the sensor may be a pressure gauge, a thermometer, a flow meter, or the like. Of course, the sensor is not limited thereto. Sensors are attached to equipment or pipes and measure pressure, temperature, and flow rate of equipment or pipes.

These devices and sensors generate time series data.

Hereinafter, time series data generated by equipment and sensors will be described with reference to FIG. 2. The illustrated time series data is a row version, and is not limited thereto because it is exemplary. The time series data may be a column version differently from that shown.

Equipment generates time series data that measures information such as energy consumption for each equipment in a specific time unit. The device generates Device ID, Timestamp, and measured value (value01.value 02...) as time series data. In this case, a serial number may be assigned as a separate numbering in chronological order.

Here, Device ID is assigned a unique ID for each device. For example, among the equipment installed in a water treatment plant, the first pump is assigned a Device ID of 1001, the second pump is assigned a Device ID of 1002, and the third pump is assigned a unique ID of 1003.

The sensor generates time series data that measures pressure, temperature, flow rate, etc. in a specific time unit. The sensor generates a device ID, a measurement time (Timestamp), and a measurement value as time series data. In this case, a serial number may be assigned as a separate numbering in chronological order.

Here, the device ID is assigned a unique ID for each sensor. For example, the first pressure sensor is 2001, the second pressure sensor is 2002, and the third pressure sensor is 2003. Unique IDs are assigned. In addition, the first temperature sensor 3001, the second temperature sensor 3002, etc., a unique ID is given.

At this time, the Device ID is composed of an integer, so that data can be more simplified.

These devices and sensors can communicate in analog or digital. Alternatively, the device may communicate through analog and digital to transmit the generated time series data to the node unit. At this time, if the device cannot communicate on its own, time series data may be transmitted to the node unit through a PLC (PROGRAMMERBLE LOGIC CONTROLLER).

Timestamp is the measurement time, and the measurement value (value01...) is the measurement value measured at Timestamp. For example, in the case of a pump, the measured value may be an energy consumption amount, and in the case of a pressure sensor, it may be a pressure value.

In addition, the node unit receives time series data from at least one of the device and the sensor. For example, the node unit may receive time series data from the device or may receive time series data from a sensor. Alternatively, the node unit may receive time series data from equipment and sensors. This may depend on the situation in the field.

Also, the node unit may store the transmitted time series data. Since the node unit has a limited capacity, it is possible to mainly store the latest time series data. In this case, a serial number may be assigned as a separate numbering in chronological order.

A plurality of such node units may be formed. The node unit manages equipment for each group, and as the number of equipment increases, the number of node units may increase.

In addition, the node unit transmits the received time series data to a gateway to be described later.

Equipment, sensor PLC, and node units are installed on sites such as water treatment plants.

Referring back to FIG. 1, the gateway unit is connected to the node unit to receive time series data, and receives time series data from the node and integrates it on a time basis. For example, if data from one node and data from another node are received at the same time, the gateway unit arranges the Device IDs in order based on the same time (Timestamp) as shown in FIG. 3, The measured values are arranged in different cells for each device ID. The integrated time series data shown in FIG. 3 is only an example and may be transformed into other forms. In this case, a serial number may be assigned as a separate numbering in chronological order.

This gateway unit is installed between the node unit and the field server unit. For example, it is provided between the site where the node unit is installed and the site control room where the site server unit is installed. Alternatively, the gateway unit may be installed in the on-site control room.

In addition, the control room server unit receives the integrated time series data from the gateway, and determines whether an error or defect exists in the time series data. The situation room server unit includes a control room database, a control room processor that processes various commands and controls by an administrator, and a control room human-machine interface (HMI) capable of monitoring and controlling.

Such a situation room server unit is provided in the field situation room. Of course, the present invention is not limited thereto, and in the case where the on-site control room is integrated with the headquarters control room, the injuries room server unit may be provided in the headquarters control room.

The control room database receives and stores the integrated time series data received from the gateway unit.

The control room HMI is output through the Human Machine Interface (HMI) program so that the user can easily recognize it. More specifically, the control room HMI includes a program that simulates the process graphically to check the status of equipment or sites from the collected time series data, and sorts the collected integrated time series data and error/defect data to the user (manager). Provided by video.

The control room processor sorts the time series data stored in the control room database and determines whether an error or defect exists in the time series data.

Referring to FIG. 4, a method of determining an error/defect by the control room processor will be described in more detail.

The control room processor performs a time series data sorting step of sorting time series data stored in the control room database in chronological order. In this case, the control room processor may sort the time series data at regular intervals. For example, time series data is arranged in order of time.

The control room processor performs a step of determining whether there is an error or a defect in time series data.

More specifically, the control room processor determines whether the time series data is continuous in the sorted time series data, and if it is not continuous but is discontinuous, it determines that there is a data loss. For example, if the number of times (Timestamp) is insufficient or discontinuous, it may be determined that there is a defect in the time series data. Alternatively, if the above-described serial numbers are not consecutive, it may be determined that data is missing.

Alternatively, the control room processor compares time series data corresponding to a specific time before/after, and determines that an error exists in the data when the measured value corresponding to a specific time shows a large difference from the measured values before/after.

If there is no erroneous/defective time series data, the control room server unit (eg, control room processor) sorts the time series data at regular intervals.

When an error or defect exists in the time series data, the control room processor performs a corresponding time series data transmission command step instructing the gateway unit to retransmit the error or missing time series data.

The gateway unit performs a step of determining the presence or absence of the corresponding time series data, which determines whether or not the corresponding time series data corresponding to the error or missing time series data received from the control room processor is present.

Here, if the gateway unit holds the corresponding time series data corresponding to the error or missing time series data, the gateway unit performs a corresponding time series data transmission step of transmitting the corresponding time series data to the control room server unit (control room processor).

However, if the gateway unit does not hold the corresponding time series data corresponding to the erroneous/defected time series data, it sends a command to transmit the time series data to the control room server unit (control room processor) to the node unit, and the node unit sends the time series data to the server unit. Performs the step of transmitting the corresponding time series data of the node that is transmitted to the (control room processor).

The control room server unit (eg, the control room database) performs a corresponding time series data storage step of storing the corresponding time series data transmitted from the gateway unit or the node unit. More specifically, the control room server unit (eg, the control room database) adds the corresponding time series data to the existing time series data. Alternatively, the control room server unit (for example, the control room database) overwrites the corresponding time series data with the error/defect time series data.

Then, the control room server unit (eg, the control room processor) performs a time series data sorting step of sorting the time series data of the control room database again. That is, the above-described steps are performed again.

On the other hand, the above-described headquarters server unit collects data from water treatment facility sites across the country and controls the operation of equipment and processes. This headquarters server unit may include a headquarters processor, a headquarters database, and a headquarters HMI.

On the other hand, the system for checking equipment and facilities for abnormalities according to another embodiment of the present invention may check for equipment problems. More specifically, the device outputs a logical data type Boolean signal at regular time intervals determined by the user. Here, the predetermined time interval may be several seconds or several microseconds.

The logical data type Boolean signal is transmitted to the control room server through the node unit and the gateway unit.

If the control room server unit fails to receive the logical data type Boolean signal output from the equipment, it may determine that it is an equipment error and notify the manager through the control room HMI.

Alternatively, the range of the measured values of the time series data must be within a certain range (e.g. 0 to 10), and if the measurement value (e.g., 100) exceeding this certain range is continuously stored in the operation room database, the operation room server determines that the equipment is abnormal And, you can notify the manager through the control room HMI.

On the other hand, the system for checking equipment and facility abnormalities according to another embodiment of the present invention may check equipment and communication abnormalities. More specifically, the equipment outputs the check data in the form of True/False at regular time intervals whether or not there is an abnormality about its status. Here, the predetermined time interval may be several seconds or several microseconds.

The check data in the form of True/False is transmitted to the control room server through the node unit and the gateway unit.

If the control room server does not receive the check data in the form of True/False output from the equipment, it determines that it is a communication error and can notify the manager through the control room HMI.

Alternatively, if the control room server unit receives false check data output from the equipment, it may determine that it is an equipment error and notify the manager through the control room HMI.

On the other hand, the system for checking the presence of abnormalities in equipment and facilities according to another embodiment of the present invention may check whether there is an abnormality in the node unit. More specifically, when the control room server unit repeatedly receives the same time series data to be received, it is determined as an abnormality in the node unit.

For example, the time (Timestamp) of time series data is not overlapped for each device or sensor. However, if the same time value is repeatedly received from one device, it can be considered that there is an error in the node that is in charge of the time.

Therefore, when the control room server unit repeatedly receives time series data having the same time value, it may determine that it is an abnormality in the node unit and notify the manager through the control room HMI.

Meanwhile, referring again to FIG. 1, the gateway unit of the system for checking equipment and facilities according to another embodiment of the present invention includes a master gateway and a slave gateway. Through the redundancy of the gateway, it can be operated stably.

The node unit normally transmits time series data to the slave gateway in preparation for a failure state of the master gateway.

In addition, the gateway unit may further include a virtual gateway to configure the gateway in triplicate. Here, the virtual gateway may be a cloud gateway.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom . Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (8)

A plurality of node units for receiving time series data from at least one of equipment and sensors;
A gateway unit connected to the plurality of node units, receiving the time series data from the plurality of node units, and integrating the time series data based on time; And
A control room server unit that receives the time series data from the gateway unit and determines whether an error or defect exists in the time series data;
Containing, equipment and facility abnormality check system. The method of claim 1,
The control room server unit determines whether the time series data is continuous, and if it is not continuous but is discontinuous, it determines that there is a defect in the time series data. The method of claim 1,
The control room processor compares the time series data corresponding to a specific time before/after, and determines that an error exists in the data when the measurement value corresponding to a specific time shows a large difference from the measurement values before/after, Equipment and facility abnormality check system. The method according to claim 2 or 3,
The control room server unit instructs the gateway unit to retransmit the error or missing time series data when there is an error or defect in the time series data. The method of claim 4,
If the gateway unit stores error or missing time series data, it transmits the time series data to the control room server unit, and if not, instructs the node unit to transmit the time series data to the control room server unit. Check system. The method of claim 1,
The control room server unit determines whether there is an abnormality in equipment and equipment when it fails to receive a logical data type Boolean signal output from the equipment. The method of claim 1,
When the control room server unit repeatedly receives the same received time series data, it is determined that the node unit is abnormal. The method of claim 1,
The gateway unit includes a master gateway, a slave gateway, and a virtual gateway, a system for checking equipment and facilities for abnormalities.

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