KR102288535B1 - A Smart TM/TC System - Google Patents

Abstract

The present invention relates to an on-site monitoring control panel for operating a motor pump of a water and sewage facility.
More specifically, in the water treatment process of a water and sewage treatment facility, there is a system related to a field monitoring control panel, also called TM/TC (Tele-Metering/Tele-Control), which is required to operate field facilities, and the present invention relates to the TM It is related to monitoring and controlling the motor of the motor pump, which is a field facility, by connecting the /TC and the smart terminal through wireless communication.

Description

Field monitoring and control system for water treatment facilities using smart terminals {A Smart TM/TC System}

Water treatment facilities such as water supply and sewage are very important facilities in industries and daily life that require water treatment. On-site equipment such as a motor pump is used to generate and control the flow of running water at the site of the pumping station of the water treatment facility. The field facility is usually operated as an unmanned system. Therefore, the correct operation of the on-site equipment and prompt handling when a problem occurs are inevitably an important concern.

The present invention relates to a system related to an on-site monitoring control panel, also called TM/TC (Tele-Metering/Tele-Control), required to operate on-site facilities in a water treatment process of a water and sewage treatment facility.

The known prior art in connection with the system of the present invention is reviewed.

The water treatment plant's pumping station is equipped with on-site equipment such as a motor pump. A monitoring and control facility to operate, monitor and control the motor of the motor pump is required, and a field monitoring and control panel (TM/TC) centered on an MCC (Motor Control Center) panel is used. (See the example in Fig. 1)

The on-site monitoring control panel,

In the external enclosure, such as a common cabinet shape for protecting the internal components from the harsh external environment in the field (Local), MCC panel; PLC (Programmable Logic Controller); communication equipment; and so on are combined.

The MCC panel, MCCB (Molded Case Circuit Breaker) / NFB (No Fuse Breaker); MC (Magnet Contactor); Motor Protectiom Relay (MPR): Over Current Relay (OCR); The light is placed as a component to protect and control the motor in the field.

In addition, in order to protect the motor by monitoring and diagnosing the state of the motor, a motor diagnosis device such as CT (Current Transformer): Current measuring device (A-meter): Voltage measuring device (V-meter): may be added.

In the field, selecting whether the signal applied to the motor is sent from the Local Panel or from the Distributed Control System (DCS) to operate the pump or to detect the water level is the Select Switch. will be in charge

The MCCB/NFB is intended to protect against overload, and if, for example, a leakage current flowing in the event of a leakage exceeds its rated current, the MCCB/NFB is in an OFF state. The overload occurs due to excessive operation of a device such as an electric motor, an overcurrent caused by a short circuit or a short circuit.

The MC is a device that turns on/off the load current by an external signal. In this regard, there is an MS (Magnetic Switch), which is a state in which an overload relay is combined, and a signal generated from the overload relay controls the contactor operation coil power supply.

Here, the adoption, arrangement position, and operation method of each component of the on-site monitoring control panel are not uniformly fixed and may vary depending on the situation, scale, installation cost, etc. of each site.

On the other hand, the communication facility serves to remotely monitor and control the field facility through wired/wireless communication in a remote control room. In connection with such remote monitoring and control, HMI (Human Machine Interface) and the like are provided.

Accordingly, the manager can routinely monitor and control various local on-site facilities remotely from the remote control room, and directly visit the pumping station due to regular inspection of on-site equipment or emergency situations due to breakdown, etc. You can also obtain information about it and take necessary actions.

However, regarding the manager, since a professional electrician cannot manage all pumping stations, a general manager manages and operates many sites. current voltage and current value in ; operating state; fault condition; Water level; Although it is possible to check the information of the field condition through each instrument and lamp, etc., it is practically easy to diagnose the exact condition with only the above field condition information, find the cause, and take action from the point of view of a general manager, not an electrician. don't

On the other hand, in the case of a large-scale water treatment facility pumping station, diagnosis and action can be taken by a professional electrician using the HMI system, but since there are many small-scale pumping stations in the field, the HMI system is installed in these small-scale pumping stations. It is not practically easy because of the lack of installation space and the large burden of installation cost.

Accordingly, there is a need for a system related to monitoring and control of on-site equipment that is realistic and simple and can be easily used by general managers at low cost suitable for a small-scale pumping site site, and the present invention is to provide this.

In order to achieve the above object, the on-site monitoring control system of the present invention,

Including a smart terminal, a wireless communication network, and a smart on-site monitoring control panel,

The smart terminal is

A monitoring control application is installed that can communicate wirelessly while carrying, send and receive SMS text messages, connect to the Internet, and wirelessly communicate with the smart field monitoring control panel to monitor and control the state of field equipment motors.

The wireless communication network includes a long-distance wireless communication means and a short-distance wireless communication means, wherein the Internet or SMS text message method is used in a long-distance area, and a wireless LAN method such as Wi-Fi is used in the short-distance area.

The smart field monitoring control panel,

MCC panel composed of MC, MCCB, motor diagnostic device, etc.; a controller including a PLC and a processor; and a wireless communication facility.

The MCC panel and the controller are combined together to supply power to a field facility motor, diagnose and apply monitoring and control, and perform a monitoring and control role such as protecting the motor.

In particular, the processor,

The motor monitoring control command is transmitted to the MCC panel, the signal transmitted from the MCC panel and the signal of the monitoring result transmitted from the motor diagnosis device are received and transmitted to the wireless communication facility, and the monitoring result is stored in the memory.

The wireless communication facility,

It operates to transmit data information from the processor to the outside using the wireless communication network or to receive a signal from the outside to perform wireless communication with the smart terminal. In order to perform these functions, a repeater such as a router is required.

According to the system of the present invention,

On-site monitoring and control are possible at relatively low cost, so it is useful for small-scale pumping stations.

It provides information processed in the field so that it is easy to understand the status, so that general managers can use it easily.

In other words, it is possible to directly and easily check the status of on-site equipment directly and easily with a smart terminal at the motor pump site by selectively utilizing a local area network compared to the remote HMI system. While controllable,

Compared to the high-cost HMI system, it is economically more realistic and the overall configuration is simpler, so it is possible to build a system with great utility.

In addition, in the on-site monitoring and control of field facilities, the reliability of the on-site monitoring and control system can be high because it is independent of a specific location such as a remote control room, there is no time constraint, and appropriate monitoring and control are always possible.

1 is a configuration diagram showing one example of a system configuration in the prior art.
Hereinafter, as a city showing an example according to the present invention,
2 is a system configuration diagram schematically illustrating the configuration of the entire system.
3 is an exemplary view showing the elements necessary for the system configuration in a photograph.
4 is a block diagram illustrating an example of a smart field monitoring control panel.
5 is an exemplary view showing an implementation of the monitoring control application displayed on the smart terminal.

Hereinafter, it will be described in detail with respect to the system of the present invention in conjunction with the accompanying drawings.

The on-site monitoring control system of the present invention comprises a smart terminal 300 , a wireless communication network 200 , and a smart on-site monitoring and control panel 100 .

The smart terminal 300,

A mobile phone such as a smartphone, a personal digital assistant (PDA), a portable computer (Netbook, TabletPC), etc. are portable and wireless communication terminals that can send and receive SMS text messages and access the Internet As a possible terminal, an application capable of monitoring and controlling the state of a field facility motor by wireless communication with the smart field monitoring control panel 100, that is, a monitoring control application is installed. 5 is an example of an image displayed through the monitoring control application.

In the case of the wireless communication network 200,

LTE (Long Term) introduced to distribute data overload of 3G (3rd Generation, 3rd generation mobile communication) services or 3G WCDMA phones largely classified into WCDMA (Wideband Code Division Multiple Access) and CDMA2000, which evolved from CDMA (Code Division Multiple Access). Evolution)'s 4G (4th Generation, 4th generation mobile communication) service is being implemented, the popularization of a mobile communication terminal with a multi-function called a smartphone is rapidly progressing based on a fast wireless transmission speed. .

In the local area wireless communication network 200,

Bluetooth (Bluetooth) technology is known, but there is a limit to sharing of large-capacity information, so it is mainly used for small-capacity wireless transmission, for example, simple text message sharing (transmission). Broadly speaking, Wi-Fi (Wi-Fi, WirelessFidelity), a series of technologies that supports large-capacity wireless LAN (Wireless Local Area Network) connection through a router (Router, etc.), device-to-device connection (P2P), or even PAN/LAN/WAN configuration. Alliance) is provided. On the other hand, depending on the type or mode of use of the device, the Wi-Fi is a plurality of terminals (PC, Smartphone, etc.) within a certain radius around an AP (Access Point, LTE Router, etc.) that transmits a wireless signal. It can be divided into an infrastructure mode in which data is exchanged with an AP, and an ad hoc mode in which data is exchanged P2P between terminals without an AP. Currently, a service called Wi-Fi Direct is provided for direct communication between terminals without using an Internet line.

Compared to 3G mobile communication or satellite communication, the Wi-Fi is popularized due to the ease of installation of the AP and the economical efficiency of installation cost as well as a fast data transmission speed.

In general, in wireless communication such as a mobile phone. Communication is performed by selectively taking an efficient method according to the surrounding situation with the wireless method of two technologies, such as the 4G in the long-distance and the Wi-Fi in the short-distance, or by designating a preferred method in advance.

Necessary matters regarding the wireless communication network 200 and the like may be cited with reference to known ones.

The smart field monitoring control panel 100,

MCC panel 110 including MC, MCCB, motor diagnostic device and the like; a controller 120 including a PLC, a processor 121, and the like; and a wireless communication facility 130 including a repeater, a wireless transmitter, and the like.

The MCC panel and the controller 120 are combined together to perform a role of monitoring and controlling (power supply, diagnostic monitoring, monitoring, motor protection, etc.) of the motor of the pump station field motor pump. In particular, the MCC panel is connected to the field equipment motors and is responsible for controlling them. Usually, based on the administrator's setting value or the measured voltage/current, water level of the motor, etc., the MCC panel is connected through the MCCB/NFB or PLC circuit. Protects or controls the motor of the motor pump.

Matters necessary in relation to the MCC panel, the PLC, and the motor diagnosis device may be cited with reference to the known as well as the above-described background technology.

The processor may be interlocked with the MCC panel, a programmable logic controller (PLC), etc., and the MCC panel drives a motor according to a control command transmitted from the processor and a monitoring result of detecting the state of the motor may perform a procedure of transferring to the processor. That is, it is possible to transmit a motor monitoring control command to the MCC panel, receive a signal transmitted from the MCC panel and a signal of a monitoring result transmitted from the motor diagnosis device, and transmit it to the wireless communication facility 130 . In this case, an authentication unit for storing the monitoring result through a memory and performing an authentication procedure of an administrator may be included, and in relation to the memory and the authentication procedure, a known reference may be cited.

The flow of data signals related to the state of the motor pump, such as detected and measured voltage, current, water level and operating time from the motor diagnostic device, is analog data through the A/D input terminal, and an input coil is used. Thus, digital data is input to the system, and the input data is transmitted to the processor, processed through information, and transmitted through wireless communication. In this case, before the transmission, the processor performs data processing (storage, calculation, integration, etc.) to process the data in the form of information that allows the manager to monitor the motor pump. For example, a method of storing the current state value (data such as current voltage, current, operating time, etc.) of field equipment motors in memory, and integrating and calculating the accumulated value of the day and the accumulated value of the previous day for the operating state of the motor pump It is possible to perform the procedure of converting data into text or images that users can check by performing data processing.

The wireless communication facility 130 operates to transmit data information from the processor to the outside to access the Internet or directly perform wireless communication with the smart terminal 300 . Through this, the smart terminal 300 can send a control command to the field facility motor using wireless communication, inquire the diagnosis of the motor state, and display and display the result of the inquiry of the diagnosed state on the screen. .

Looking in more detail with respect to the wireless communication facility 130,

As described above, in the current wireless communication technology, in order to exchange data at high speed by wirelessly connecting to the Internet, 4G service in which LTE is introduced is generalized to 3G service.

In the on-site monitoring control system of the present invention, by using the short-distance wireless communication facility 130 to connect to the controller 120 of the smart on-site monitoring control panel 100 with a smart terminal 300, or in the case of a remote location from the field, the Internet Through connection with the processor/PLC, etc., it is possible to transmit a monitoring control command to the field facility motor and receive the result. ) and the same wireless communication technology.

To this end, a router such as an LTE router to perform 4G wireless communication may be provided. After the router receives the data on the monitoring control command through the Internet, it transmits the data to the processor, and transmits the result of the monitoring control command transmitted from the processor to the smart terminal 300 through the Internet. At this time, the data information is converted into a data format of the 4G wireless communication method and transmitted.

However, the processor may take action to transmit the status of the field periodically or arbitrarily when the measured value of the field motor pump deviates from the set value regardless of the monitoring control command.

On the other hand, when there is a problem in a communication method such as the Internet or in a very urgent situation, an emergency text message such as a relay pump failure, for example, may be transmitted in the SMS text text method through a CDMA modem or the like.

If the manager is located in the field, the smart field monitoring control panel 100 and the smart terminal 300 can directly exchange information through the Wi-Fi communication method without the Internet, and the smart field monitoring control panel 100 is the repeater Wi-Fi communication can be performed by using the AP (Access Point) as a base of a hotspot. It is possible to implement the above-described various functions by directly connecting to the processor through the AP. At this time, the acquired and processed data information is converted into a data format of the Wi-Fi wireless communication method and transmitted. Of course, it is also possible to adopt the Bluetooth communication method as a local area network.

Monitoring can be performed by selecting a more efficient or preferred wireless communication method according to the manager's location, field situation, or communication cost.

The flow of the processing procedure in the on-site monitoring and control system of the present invention will be described.

inputting a monitoring control command to the smart terminal 300;

Transmitting by adopting the Internet, SMS or Wi-Fi communication method;

receiving the monitoring control command transmitted from a repeater;

The controller 120 processes and outputs the received monitoring control command as a signal system for operating the MCC panel;

Performing a monitoring control function according to the monitoring control command in the MCC panel

After reading the data of the monitoring control result (diagnosis result, control result, etc.) acquired according to the monitoring control of the MCC panel from the controller 120, the data is processed into necessary information and converted into a selected communication format, sending to the communication facility 130;

transmitting the information converted by the wireless communication facility 130 to the outside;

Receiving the transmitted information in the smart terminal (300);

displaying the information received in the smart terminal 300;

carry out

However, there are cases where motors of field equipment motor pumps often deviate from normal operation due to age, defects, neglect, etc. many.

Motors of these field facilities require special attention by setting the management standards more strictly. Therefore, it is necessary to classify the motor as a specific management motor and prevent problems from occurring in advance.

In general, a method of diagnosing a motor of a motor pump includes, as well as the above-described method, a method of measuring a load current of the motor; A method of measuring the load current by sending a specific current value to the motor; A method of measuring the torque of the motor by generating an operating current with the motor; Diagnosing whether there is an abnormality in the motor, etc.

Here, a motor designated as a specific management motor may be set to be recognized as a problem in an emergency situation at a value smaller than the deviation of the normal motor load current measurement value, for example.

Alternatively, it is set in advance so that the monitoring control can be performed more frequently, or the monitoring control is performed first before the monitoring control of other motors. It can be set to be displayed preferentially on the smart terminal 300 .

The pump of interest is

Designating a field facility pump likely to cause problems as a pump of interest to the processor or smart terminal 300 and inputting it;

setting the diagnostic criteria of the pump of interest more strictly than other pumps;

is set to

When a monitoring control command is input to the smart terminal 300, the diagnosis is made in accordance with the strict diagnostic criteria, and the processing result is preferentially displayed.

Alternatively, regardless of the monitoring control command, the processor issues a monitoring control command on its own to perform diagnosis, and if an abnormality occurs in accordance with the strict diagnostic criteria, it is transmitted to the smart terminal 300 immediately and set so that the administrator can check it. there is.

Regarding the method of setting a specific value itself, a known general information processing procedure will be followed.

On the other hand, from the point of view of the manager, the

In most cases, small-scale motor pump field facilities are managed by general managers, but there is a limit to the extent to which the general manager who manages them can take emergency measures for field facilities. There is a need to contact At these times,

When the abnormal state data acquired from the motor diagnosis device is transmitted to the processor,

analyzing the data and determining whether to send the abnormal state to a general manager or an electrician related to electricity according to a preset standard;

converting to necessary information according to the determination;

In this case, in the step of converting the necessary information, it can be converted into a more professional electricity-related information form familiar to the electrician. For example, it can be expressed in more professional symbols, figures, and graphs. And,

transmitting the converted information to the wireless communication facility 130 and transmitting it to the smart terminal 300 of the electric manager designated in advance;

carry out At this time, the step of transmitting to the electricity manager first and transmitting to the general manager may be added, or the step of transmitting to the general manager and the electricity manager at the same time may be switched.

On the other hand, the general manager has a high probability of being on site of the field facility and the electrical manager has a high probability of being at a remote location. The data format of Wi-Fi wireless communication transmitted to the processor can be processed sequentially or simultaneously.

100: smart field monitoring control panel
200: wireless communication network
300: smart terminal

Claims (1)

In the on-site monitoring and control system of a water treatment facility using a smart terminal,
Including a smart terminal, a wireless communication network, and a smart on-site monitoring control panel,
The smart terminal is
A monitoring control application that is portable, enables SMS text messages and Internet access through wireless communication, and wirelessly communicates with the smart field monitoring control panel to monitor and control the motor is installed,
The wireless communication network is
including long-distance wireless communication and short-range wireless communication means;
The smart field monitoring control panel,
including a controller and wireless communication equipment;
The controller is
Including MCC panel, PLC and processor, it supplies power to the motor and performs a monitoring and control role to diagnose, control, and protect the motor,
The wireless communication facility,
Transmitting data information from the processor to the outside using the wireless communication network or receiving a signal from the outside to perform wireless communication with the smart terminal,
The processor is
Transmits a motor monitoring control command to the MCC panel, receives the signal transmitted from the MCC panel and the signal of the monitoring result transmitted from the motor diagnosis device, and transmits it to the wireless communication facility, and stores the monitoring result in a memory;
The wireless communication network is operated by a communication method through a repeater in the long distance, and is operated in a Wi-Fi communication method in the short distance by using the repeater as an AP,
The motor of the field facility pump that requires special management is designated as a specific management motor in the processor or the smart terminal, and is usually recognized as a problem in an emergency situation at a value smaller than the deviation of the motor's load current measurement. being set,
When a monitoring control command is input to the smart terminal, the specific management motor is prioritized for monitoring and control prior to monitoring and control of other motors, and the diagnosis is made in accordance with the strict diagnostic criteria, and the processing result is preferentially determined by the smart terminal. displayed on the terminal,
When the abnormal state data acquired from the motor diagnosis device is transmitted to the processor,
determining whether to send the abnormal state to a general manager or an electrician according to a preset standard by analyzing the data;
converting the data into symbols, numbers, and graph information;
Including; sending the converted information to a wireless communication facility to a designated smart terminal;
At this time, the communication method is a data format transmitted to a remote electric manager and a data format transmitted to a local general manager, the on-site monitoring control system of a water treatment facility using a smart terminal, characterized in that the processor sequentially processes it.

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