KR20220045135A - Smart Monitoring System - Google Patents

Abstract

Facilities requiring monitoring (operation, monitoring, control) of a motor through the tele-metering/tele-control (TM/TC), for instance, water treatment facilities (water supply, sewer, etc.) are very important in industries and our daily lives. On such sites, on-site facilities such as motor pumps are used for generating water flow and controlling it. The on-site facilities are in general operated by an unmanned system. Accordingly, the precise operation of the on-site facilities and rapid handling for a problem that occurs cannot help being an important issue. The present invention relates to, in a water treatment process of water supply and sewer treatment facilities, a system related to a site monitoring control panel which is required for operating such on-site facilities and also called TM/TC. According to the present invention, the remote monitoring and control system comprises: a smartphone, a wireless communication network, and a site monitoring control panel.

Description

Remote monitoring and control system through smart phone remote control {Smart Monitoring System}

The present invention relates to a remote monitoring and control system through a smart phone remote control. Specifically, field equipment such as a motor pump is usually operated as an unmanned system. At this time, the precise operation of the field facility and prompt handling in case of a problem cannot but be an important concern. The present invention relates to a system related to TM/TC (Tele-Metering/Tele-Control), that is, a field monitoring control panel, required to operate field equipment requiring a motor.

The on-site monitoring control panel includes an MCC panel; PLC (Programmable Logic Controller); communication equipment; These are combined to operate, monitor and control the motor of the motor pump. The on-site monitoring and control panel (TM/TC) centered on the MCC (Motor Control Center) panel is used for monitoring and control facilities.

In 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 for the purpose of overload protection protection. For example, if the leakage current flowing in the event of a leakage exceeds the 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 power supply of the contactor operation coil. 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.

The communication facility serves to remotely monitor and control the field facility through wired/wireless communication in a remote control room at a distance. In connection with such remote monitoring and control, HMI (Human Machine Interface) and the like are provided. Therefore, the manager can routinely monitor and control various local on-site facilities remotely from the remote control room, and visit the pumping station directly to receive information on the operation status of the on-site facilities due to regular inspections of on-site facilities or emergency situations due to breakdowns, etc. It is possible to acquire and take necessary actions.

On the other hand, facilities to which a motor is applied, for example, a pump station, etc., cannot be managed by a professional electrician, so general managers without specialized knowledge are managing and operating in many fields. When the general manager takes an on-site visit, the current voltage and current value in the on-site control panel of the on-site monitoring control panel; 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 virtually 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 If the scale of the water treatment plant pumping site is large, diagnosis and actions can be taken by a professional electrician using the HMI system. It is not practically easy due to the lack of space and the high installation cost burden. Therefore, there is a need for a realistic, simple and clear on-site facility monitoring and control system that can be easily used by general managers at low cost suitable for small-scale pumping site sites.

According to the present invention, by providing information processed in the field, even a general manager can easily grasp the operating status, and the field monitoring control is possible at low cost, so it is useful for a small site requiring field monitoring control of motor equipment. By selectively utilizing a local area network compared to the remote HMI system, it is possible to directly and easily check the status of the on-site facility with a smart terminal at the motor pump site. Compared to the possible and expensive 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 particular, regardless of a specific location such as a remote control room, there is no time constraint, and appropriate monitoring and control are always possible, thereby providing a highly reliable on-site monitoring and control system.

1 is a system configuration diagram schematically showing the configuration of the entire system.
2 is a partial block diagram of the system;

The remote monitoring and control system through the smart phone remote control of the present invention comprises a smart terminal 300 , a wireless communication network 200 , and a field monitoring control panel 100 .

The smart terminal 300 is a mobile phone such as a smart phone, a personal digital assistant (PDA), a portable computer (Netbook, Tablet PC), etc., as a portable and wireless communication terminal, and gives SMS text text. As a terminal capable of receiving and connecting to the Internet, an application capable of monitoring and controlling the state of a field facility motor by wireless communication with the field monitoring control panel 100, that is, a monitoring control application is installed.

The wireless communication network 200 is a smart phone based on a fast wireless transmission speed while providing services such as Wideband Code Division Multiple Access (WCDMA) and CDMA2000, 4G (4th Generation), which have evolved from Code Division Multiple Access (CDMA). Mobile communication terminals (Terminals) having multiple functions such as (Smartphone) are rapidly developing.

Find out the local area wireless communication network (200). As an example, Bluetooth (Bluetooth) technology is known, but there is a limit to sharing a large amount of information, so it is mainly used for wireless transmission of a small capacity, for example, simple text message sharing (transmission). Broadly speaking, Wi-Fi (Wi-Fi, WirelessFidelity), a series of technologies that support 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. Depending on the type of device or mode of use, the Wi-Fi has a plurality of terminals (PC, Smartphone, etc.) and data 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 and an ad hoc mode in which data is exchanged between terminals in a P2P format without an AP. In addition, there is a service called Wi-Fi Direct for direct communication between terminals without using an Internet line. Compared to 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 the wireless communication of a smartphone. Communication is performed by selectively taking an efficient method according to the surrounding situation with a wireless method of two technologies, such as 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 on-site monitoring control panel 100, MC, MCCB, MCC panel 110 including a motor diagnostic device; 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 monitor and control (power supply, diagnostic monitoring, monitoring, motor protection, etc.) the motor of the motor pump at the pump station. In particular, the MCC panel is connected to the field equipment motors and is responsible for controlling them. Usually, through the MCCB/NFB, PLC circuit, etc. 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 transmitting the 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 diagnosis 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 transmission, the processor performs data processing (storage, calculation, integration, etc.) to process the data in the form of information that enables the administrator to monitor the motor pump. For example, a method of storing the current state value (data such as current voltage, current, and operating time) of the field facility motor 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 the user 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. .

The wireless communication facility 130 will be described in more detail. As described above, in the current wireless communication technology, a service for exchanging data at high speed by wirelessly connecting to the Internet is common. In the on-site monitoring control system of the present invention, using the short-distance wireless communication facility 130 to connect to the controller 120 of the on-site monitoring control panel 100 with a smart terminal 300, or the Internet in the case of a remote location from the field Through the connection with the processor/PLC, etc., it is possible to transmit a monitoring control command to the field facility motor and receive the result. Possible wireless communication technology is required. To this end, a router such as an LTE router to perform wireless communication may be provided.

The router receives the data regarding the monitoring control command through the Internet, and then 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. In this case, the data information is converted into a data format of a wireless communication method such as 4G 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, it is possible to transmit an emergency text message such as a relay pump failure, for example, in the SMS text text method through a CDMA modem or the like. If the manager is located in the field, the on-site monitoring control panel 100 and the smart terminal 300 can directly exchange information through the Wi-Fi communication method without using the Internet, and the on-site monitoring control panel 100 uses the repeater to access the AP. Wi-Fi communication can be performed as an access point or a hotspot base. It is possible to implement the above-mentioned 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.

Looking at the flow of the processing procedure in the smart field monitoring and control system of the present invention, 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.) obtained 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 in 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; performs.

On the other hand, 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 can 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 may be set in advance so that the monitoring control can be performed more frequently, or the monitoring control may be prioritized prior to monitoring and control of other motors, or it may be determined such that the display can be preferentially displayed on the smart terminal 300 .

The pump of interest, the step of specifying a field facility pump, which is likely to cause a lot of problems, as a pump of interest to the processor or smart terminal 300; Setting the diagnostic criteria of the pump of interest more strictly than other pumps; 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 when 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. can Regarding the method of setting a specific value itself, a known general information processing procedure will be followed.

On the other hand, from the manager's point of view, a small-scale motor pump site facility is mostly managed by a general manager. In the case of a serious situation, it is necessary to immediately contact the electrician. At this time, 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 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.

Then, the converted information is sent to the wireless communication facility 130 and transmitted to the smart terminal 300 of the electric manager designated in advance; is performed.

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

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 wireless communication such as transmitted Wi-Fi can be processed sequentially or simultaneously in the processor.

wireless communication network 200; on-site monitoring control panel 100; MCC panel 110; controller 120; wireless communication facility 130;

Claims (1)

A remote monitoring and control system through a smartphone remote control, including a smartphone, a wireless communication network, and an on-site monitoring and control panel,
The smartphone is equipped with an SMS text message and Internet access, and a monitoring control application provided to monitor and control the motor through wireless communication with the on-site monitoring and control panel is installed,
The wireless communication network includes long-distance and short-range wireless communication means,
The on-site monitoring control panel includes a controller and a wireless communication facility,
The controller, including the MCC panel and the processor, supplies power to the motor, diagnoses, controls, and protects the motor, and performs a monitoring and control role,
The wireless communication facility operates to transmit data information from the processor to the outside or to receive a signal from the outside to perform wireless communication with the smartphone,
The processor transmits a motor monitoring control command to the MCC panel, receives a signal transmitted from the MCC panel and a signal of a monitoring result transmitted from the motor diagnosis device, and transmits it to a wireless communication facility, and stores the monitoring result in a memory do,
The wireless communication network is operated in a communication method through a long-distance repeater,
The motor of the field equipment pump that requires special management is designated as a specific management motor in the processor or the smartphone, and is recognized as an emergency problem at a value smaller than the deviation of the load current measurement value of other motors. being set,
When a monitoring control command is input to the smart phone, 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 phone. displayed on the phone,
determining whether to send the abnormal state to a general manager or an electrician according to a preset standard by analyzing the data when the abnormal state data acquired from the motor diagnosis device is transmitted to the processor; converting the data into information necessary for general managers and electric managers according to the determination; Sending the converted information to a wireless communication facility and transmitting it to a designated smart phone; In this case, the communication method includes a data format for transmitting to a remote electrician, and a data format for transmitting to a local general manager, Processed sequentially by the processor,
In the wireless communication network, the short distance is operated by a communication method using Bluetooth,
When sending the data to the electrician, it is converted into professional numerical and graph information that is familiar to electricians,
In the step of transmitting to the designated smartphone, first transmitting to the electric manager,
A remote monitoring and control system through a smartphone remote control, characterized in that.

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