KR102252047B1 - System for providing an air pollution information using a dcu - Google Patents

Abstract

The present invention relates to a system for providing air pollution information using a DCU facility, by providing an air pollution detection sensor at the bottom of the DCU equipment, and allowing information to be exchanged between the sensor and the DCU processor through serial communication through UART, By region, more air pollution detection sensors can be easily installed and air pollution information by region can be collected, and detailed regional air pollution information can be more easily provided to customers residing in the customer based on the customer information. Its purpose is to provide a system for providing air pollution information using DCU facilities.

Description

Air pollution information providing system using DCU facilities {SYSTEM FOR PROVIDING AN AIR POLLUTION INFORMATION USING A DCU}

The present invention relates to a system for providing air pollution information using a DCU facility. In more detail, an air pollution detection sensor is provided at the bottom of the DCU equipment, and information can be exchanged between the sensor and the DCU processor through serial communication through UART. , It relates to a system for providing air pollution information using a DCU facility that makes it possible to easily install more air pollution detection sensors for each detailed region.

As is well known, the data concentration unit (DCU) collects and stores meter reading information from the smart watt hour meter on the customer side and transmits it to the power supplier, and improves the efficiency of energy generation and use through a two-way demand response with the power consumer. Height is the core equipment of Smart Grid Advances Metering Infrastructure (AMI).

1 shows a remote meter reading system through a DCU, and is also known through Korean Patent Publication No. 10-2017-100947.

The DCU disclosed in the corresponding Patent Publication No. 10-2017-100947, as well as the conventional data concentration unit (DCU), collects load power applied to the customer and the meter reading power amount data of the customer and transmits it to a remote server. Is performing.

In fact, even within a region, there is a difference that air pollution information cannot be ignored according to the detailed regional scope.

For example, the amount of air pollution is whether it is an area where fog can be combined with air pollutants in the vicinity, or whether it is an area more affected by wind due to the spread of buildings or mountains, or an area where only a small area of local showers fell in a short time. Air pollution information in a specific area can be changed by various influences such as.

In particular, in recent years, customers' attention has been focused on not only fine dust but also information on ultra-fine dust, and there is very little room for improvement in the degree of air pollution due to national and regional characteristics, so it is more urgent to provide more detailed regional information. It is a necessary situation.

However, the current air pollution information monitoring system has a problem that it is not possible to obtain air pollution information because it is installed for each detailed region.

The reason that the conventional air pollution information monitoring system could not be installed for each specific region is not because the cost of individual sensors is high, but rather than the absence of space for installing sensors, and even if the installation site is secured, the sensor is placed at a certain height or higher from the ground. In order to provide air pollution information secured by a remote server, a separate support is required because it must be installed on the site, and a communication cable or a wireless communication system must be added in order to provide air pollution information secured by a remote server. Only pollution information is being provided.

In addition, even if the existing infrastructure is to be used as it is, most of the detection systems are independently developed and constructed because communication systems and systems are different for each infrastructure.

Currently, when looking at the communication method of the DCU, it is roughly classified into a wired method and a wireless method, and when looking at the wired method, there is a PLC method.

PLC (Power Line Communication) refers to a communication method that transmits data using a power line. The PLC method is the type of DCU network that occupies the highest percentage. The PLC modem built into the DCU is called PMU (PLC Master Modem Unit), and the modem installed on the consumer side is called PSM (PLC Slave Modem).

It is mainly connected to the consumer through a power line in the form of an overhead line, and can store meter reading data of at least 200 smart watt-hour meters per DCU. The PLC modem (PSM) installed in the customer is divided into an internal type and an external type depending on whether or not it can be installed inside the smart watt hour meter.

Except for the standard type, E-type, G-type, and Advanced E-Type can be connected simultaneously up to 30 units in parallel through the RS485 interface. The power line service distance connecting the DCU and PSM can support at least 100m, and the PMM and PSM transmit and receive frames using the CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) media access control method.

As for the wireless method, the wireless method uses a wireless communication method such as Zigbee and WiSUN between the DCU and the smart power meter. If the power line is buried in the ground, the ground acts as a capacitive reactance, causing attenuation in the signal component of high-speed PLC communication using a high frequency band (2~24MHz), which makes communication difficult.

WiSUN (Wireless Smart Utility Network) is a wireless communication technology that uses the 917~923Mhz band based on the IEEE 802.15.4 standard, and is a standard that enables mutual communication up to a distance of about 1km at a speed of 200kbps. Since the 900MHz band, which is an unlicensed band, is used, the diffraction and attenuation characteristics of radio waves are superior compared to the 2.4GHz ISM band.

Zigbee is a short-range wireless communication technology using the 2.4GHz band based on the IEEE 802.15.4 standard, and has features of low power, low cost, and low speed data transmission. The Zigbee type DCU uses the Zigbee Pro method with enhanced MAC addressing function, routing and security in the existing Zigbee. Since it utilizes the 2.4Ghz ISM Band, it is possible to construct a network without a separate frequency usage fee, and it can be usefully operated in a relatively narrow range (about 50m) of customers. The disadvantage of the Zigbee method is that there may be mutual interference with communication devices such as Wi-Fi and Bluetooth that use the same band.

The wireless method also includes the LTE communication method, and the LTE method is a method in which the LTE modem connected to the smart power meter collects meter reading data at regular intervals and transmits it through the LTE commercial network. The transmitted data passes through the network of the mobile telecommunication company and then is transferred to the DCU server in the form of a server around the meter reading server of the electric power company.

Since the LTE communication method uses a commercially available network, it shows a relatively stable meter reading success rate compared to other communication methods, and has the advantage of not having to install a separate DCU in the sidewall. As a disadvantage, LTE modems are more expensive than PLC modems, and there is a problem that LTE network usage fees must be continuously paid to mobile carriers.

In addition, even if detailed regional information on air pollution was obtained, there was a problem that it was difficult to quickly provide the information to residents of the relevant region due to the leakage or use of personal information.

The background technology of the present invention is disclosed in Korean Patent Application Publication No. 10-2017-0100947 (published on September 5, 2017, a remote meter reading system and a method of operating a remote meter reading server using wireless and power line communication).

The present invention was made in consideration of the circumstances of the prior art described above, by providing an air pollution detection sensor at the bottom of the DCU equipment, and allowing information to be exchanged between the sensor and the DCU processor through serial communication through UART, DCU, which makes it possible to easily install more air pollution detection sensors, collect regional air pollution information, and provide detailed regional air pollution information more easily to customers residing in the customer based on the customer information. Its purpose is to provide a system for providing air pollution information using facilities.

In order to achieve the above object, according to a preferred embodiment of the present invention, it is installed at a predetermined part of the side pole, and is electrically connected to the loads of a plurality of customers to collect a plurality of power meter reading data from the loads of the plurality of customers, A DCU (2) that transmits the transformer load monitoring information to the remote meter reading server (14), and is provided with an air pollution detection sensor (10) for detecting air pollution by each detailed region therein; And a meteorological control server 18 that receives air pollution detection data for each sub-region from the DCU (2) and transmits a corresponding air pollution warning signal to customers residing in the sub-region when air pollution exceeds a certain value. A system for providing air pollution information using DCU facilities is provided.

Preferably, the DCU 2 is provided with an air pollution information providing system using a DCU facility, characterized in that the data is transmitted and received through direct UART communication between its internal processor and the air pollution detection sensor 10.

Preferably, the meteorological control server 18 is air pollution using a DCU facility, characterized in that it can receive the customer's terminal number information for the air pollution corresponding detailed area as a request to the customer business information management server 16 An information provision system is provided.

Preferably, the meteorological control server 18 is configured to automatically delete the corresponding customer terminal information after transmitting the air pollution warning signal to the customer's terminal for the air pollution corresponding detailed area. A pollution information providing system is provided.

The air pollution information providing system using the DCU facility according to the present invention not only alerts more quickly of air pollution, but also enables more detailed air pollution alarms for each detailed region to be alerted to customers of customers in the respective regions. Since the air pollution detection sensor can be easily applied by using the existing DCU infrastructure, there is an advantage of great economic advantage.

1 is a diagram showing a conventional DCU-based remote meter reading system;
2 is a block diagram showing the configuration of a system for providing air pollution information using a DCU facility according to an embodiment of the present invention;
3 is a view showing the configuration of a DCU equipped with an air pollution detection sensor according to an embodiment of the present invention;
4 is a diagram showing a serial communication structure in which an air pollution information providing system using a DCU facility according to an embodiment of the present invention is implemented;
5 is a diagram showing a UART signal transmission/reception state implemented in a system for providing air pollution information using a DCU facility according to an embodiment of the present invention;
6 is a flow chart showing a signal flow of a system for providing air pollution information using a DCU facility according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 is a block diagram showing the configuration of a system for providing air pollution information using a DCU facility according to an embodiment of the present invention, and FIG. 3 is a block diagram showing the configuration of a DCU in which an air pollution detection sensor is installed according to an embodiment of the present invention. One drawing, FIG. 4 is a diagram showing a serial communication structure in which an air pollution information providing system using a DCU facility according to an embodiment of the present invention is implemented, and FIG. 5 is a view showing an atmosphere using a DCU facility according to an embodiment of the present invention. A diagram showing a UART signal transmission/reception state implemented in a pollution information providing system.

Referring to this, the system for providing air pollution information using a DCU facility according to an embodiment of the present invention includes an air pollution detection sensor at the bottom of the DCU equipment, and exchanges information between the sensor and the DCU processor through serial communication through UART. By enabling more detailed regions, more air pollution detection sensors can be easily installed and regional air pollution information can be collected, and detailed regional air pollution information can be more easily obtained based on the customer information. It is a system that can be provided to.

In more detail, the air pollution information providing system using the DCU facility according to an embodiment of the present invention is installed in a predetermined part of the side pole, and is electrically connected to the loads of a plurality of customers, so that a plurality of power from the loads of the plurality of customers A DCU (2: Data concentration unit) for collecting meter reading data and transmitting the transformer load monitoring information to the remote meter reading server 14 is provided.

In more detail, the DCU (2) is a power supply unit (4) for introducing power into the device, and is electrically connected to the loads of a plurality of customers to receive a plurality of power meter reading data from the power meter (not shown) of the plurality of customers. The collected customer meter reading data collection unit 6, the transformer load monitoring unit 8 that monitors the secondary load of the transformer using voltage and current sensors, and a data transmission unit that transmits data to remotely configured servers ( 12) is provided.

Preferably, the DCU (2) constituting the air pollution information providing system using the DCU facility according to an embodiment of the present invention is provided with an air pollution detection sensor (10) that detects air pollution by each detailed region therein. It is done.

Referring to FIG. 3, the air pollution detection sensor 10 is accommodated in a space formed at the lower end of the DCU 2 to measure the degree of air pollution. Since it is installed at a height, it is possible to measure air pollution with high accuracy while minimizing the effects of temperature and humidity.

Since the DCU (2) is installed in a predetermined part of the side pole distributed in a number of regions, it is possible to easily detect the air pollution value for each detailed region, and additional infrastructure by using the already established DCU (2) system. While minimizing construction, the air pollution detection sensor 10 can be easily installed in a number of areas.

On the other hand, the air pollution information providing system using the DCU facility according to an embodiment of the present invention receives air pollution detection data for each sub-region from the DCU (2), and when air pollution exceeds a certain value, customers residing in the sub-region It is configured to include a weather control server 18 for transmitting the corresponding air pollution warning signal.

In the system for providing air pollution information using a DCU facility according to an embodiment of the present invention, in addition to the meteorological control server 18, a local government server or a National Police Agency server may be included as a server configuration of the air pollution warning system.

More preferably, the DCU 2 transmits and receives data through direct UART communication between its internal processor and the air pollution detection sensor 10.

Serial communication method includes serial communication, UART communication method, 12C method, SPI method, etc. UART method is an acronym of Universal Asynchronous Receiver/Transmitter and means dedicated hardware for asynchronous communication.

If there is no UART, the asynchronous communication protocol must be implemented directly as a program. To transmit data, the processor must use a timer to send parallel data bit by bit to the output pin at a predetermined serial communication rate. Of course, the start bit and stop bit must also be output. UART is a hardware device that automatically performs this serial-to-parallel data conversion task required for asynchronous communication. UART contains at least 4 registers, and the address of each register is defined as the value obtained by adding the offset value to the base address of the UART.

Compared to other communication methods, the UART method is not complicated, the hardware is simple, and it is a method suitable for communication between devices of 5 meters or less.

On the other hand, the meteorological control server 18 included in the air pollution information providing system using the DCU facility according to an embodiment of the present invention transmits the customer's terminal number information for the air pollution corresponding detailed area to the customer sales information management server 16 ) Can be provided by request.

That is, the air pollution information providing system using the DCU facility according to an embodiment of the present invention is basically capable of measuring the air pollution level in a detailed area based on the air pollution detection sensor 10 configured in the DCU 2 F. In the case of the existing air pollution warning through the local government or the Meteorological Agency, the air pollution warning in a large area was limited to the hourly level, but in the present invention, since the DCU (2) itself is scattered by each sub-region, it is possible to accurately measure the pollution level of the sub-region. It became possible.

In addition, the DCU (2) included in the system for providing air pollution information using the DCU facility according to an embodiment of the present invention is basically configured to measure the power of the customer load, and generates an air pollution warning signal for each detailed region. In the case of Sikkim, since customer information based on customer is already established in the customer business information management server 16, it is possible to provide limited air pollution warning signals to customers by detailed region by utilizing this.

At this time, the meteorological control server 18 may be configured to automatically delete the corresponding customer terminal information after transmitting the air pollution warning signal to the customer's terminal for the air pollution corresponding detailed area.

Meanwhile, preferably, the DCU 2, the remote meter reading server 14, and the meteorological control server 18 may be operated and managed by the same company.

The functions and actions of the air pollution information providing system using a DCU facility according to an embodiment of the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

6 is a flow chart showing a signal flow of a system for providing air pollution information using a DCU facility according to an embodiment of the present invention.

First, in the air pollution information providing system using the DCU facility according to an embodiment of the present invention, the air pollution detection sensor 10 is accommodated in the internal space of the DCU 2, and the air pollution detection sensor is (10) measures the air pollution level and transmits the measured data to the meteorological control server 18.

At this time, the DCU 2 transmits the installed area information, that is, area code information, to the meteorological control server 18 together, and the weather control server 18 receives the DCU 2 because it is distributed in a detailed area. The air pollution data is classified by each sub-region.

Accordingly, the meteorological control server 18 receives air pollution data for each detailed region and compares it with a reference value. When the pollution level exceeds the reference value, the meteorological control server 18 returns to the customer business information management server 16. Requests the customer's terminal number information in the corresponding detailed area.

In addition, the weather control server 18 transmits air pollution information to the customer terminal number of the detailed area, and automatically deletes the corresponding customer terminal number when the transmission is completed.

Therefore, the air pollution information providing system using the DCU facility according to an embodiment of the present invention not only alerts more quickly of air pollution, but also provides more detailed air pollution alarms for each detailed region. The alarm is possible, and the air pollution detection sensor can be easily applied using the existing DCU infrastructure, so the economic advantage is great.

The implementations described herein may be implemented in, for example, a method or process, an apparatus, a software program, a data stream or a signal. Although discussed only in the context of a single form of implementation (eg, only as a method), the implementation of the discussed features may also be implemented in other forms (eg, an apparatus or program). The device may be implemented with appropriate hardware, software and firmware. The method may be implemented in an apparatus such as a processor, which generally refers to a processing device including, for example, a computer, a microprocessor, an integrated circuit or a programmable logic device, or the like. Processors also include communication devices such as computers, cell phones, personal digital assistants (“PDAs”) and other devices that facilitate communication of information between end-users.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand.

Therefore, the true technical protection scope of the present invention should be determined by the following claims.

2: DCU 6: Customer meter reading data collection unit
10: air pollution detection sensor 12: data transmission unit
14: remote meter reading server 16: customer business information management server
18: weather control server

Claims (4)

DCU (2: Data Concentration Unit) installed in Byeondaeju; And a weather control server 18; as a system for providing air pollution information using a DCU facility,
The DCU (2),
A power supply unit 4 for introducing power into the DCU 2,
A customer meter reading data collection unit 6 electrically connected to the loads of a plurality of customers to collect a plurality of power meter reading data from the watt hour meters of the plurality of customers,
A transformer load monitoring unit 8 that monitors the secondary load of the transformer through voltage and current sensors to obtain transformer load monitoring information, and
As an air pollution detection sensor 10 accommodated in a space formed at the bottom of the inside of the DCU 2 and detects the pollution level of the air for each sub-region at regular intervals, the sub-regions are That is, the air pollution detection sensor 10, and
A plurality of power meter reading data collected by the customer meter reading data collecting unit 6 and the transformer load monitoring information acquired by the transformer load monitoring unit 8 are provided with a remote meter reading server configured remotely from the DCU 2 ( 14), and a data transmission unit 12 for transmitting the air pollution detection data detected by the air pollution detection sensor 10 to the weather control server 18 configured remotely from the DCU 2 and,
The meteorological control server 18,
When the air pollution detection data for each sub-region is transmitted from the DCU (2), and the value of the transmitted air pollution detection data exceeds a preset pollution level standard value, the terminal number information of the customer residing in the relevant sub-region , The customer is provided by requesting to the customer sales information management server 16 on which customer information of the customer is established, and an air pollution warning signal is transmitted to the customer's terminal for the specific area of air pollution based on the provided customer's terminal number information. After that, when the transmission of the air pollution warning signal is completed, the terminal number information of the customer is automatically deleted,
As the DCU (2) transmits the area code information of the area where the DCU (2) is installed together with the air pollution detection data detected by the air pollution detection sensor 10 to the meteorological control server 18, The air pollution detection data transmitted by the meteorological control server 18 corresponds to data classified for each detailed region,
The DCU (2), the remote meter reading server (14) and the meteorological control server (18), characterized in that the operation and management by the same company, air pollution information providing system using a DCU facility.
The method of claim 1,
The DCU (2) is an air pollution information providing system using a DCU facility, characterized in that the data is transmitted and received through a direct UART communication between its internal processor and the air pollution detection sensor (10).
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