KR102209463B1 - Wireless communication apparatus for transmitting status information of facilities and wireless communication method thereof - Google Patents

Abstract

The present specification relates to a wireless communication device and method for transmitting facility status information. This specification includes a sensing information receiving unit that receives status information of a plurality of facilities from a plurality of sensor modules, a first wireless communication unit that transmits status information of the plurality of facilities to a server, and security of the status of the plurality of facilities. When the second wireless communication unit transmitting to the communication device and the first wireless communication unit fail to transmit the state information of the plurality of facilities to the server, controlling the transmission of the state information of the plurality of facilities to a communication device such as street security It provides a wireless communication device including a processor.

Description

Wireless communication device and communication method for transmitting facility status information {WIRELESS COMMUNICATION APPARATUS FOR TRANSMITTING STATUS INFORMATION OF FACILITIES AND WIRELESS COMMUNICATION METHOD THEREOF}

The present invention relates to a wireless communication device for transmitting facility status information, and more particularly, to a wireless communication device for efficiently transmitting facility status information and a plurality of facility status information in an area where wireless communication is difficult.

AMI (Advanced Metering Infrastructure) provides information on use of water supply, etc. to suppliers (for example, Korea Water Resources Corporation) and consumers in real time, thereby enhancing the efficiency of water supply and inducing voluntary use reduction. It is an intelligent metering infrastructure.

To build an AMI system, a meter reader, an RF chip or RF module connected to the meter reader, a data concentration unit (DCU), and a higher level AMI server system are required.

In the case of an assembly building in the conventional AMI system, a number of water supply meters of 10 to 20 units are concentrated in one place, and RF and/or RF modules must be installed for transmitting each meter information to the data concentrator for each meter. There is an inefficient aspect in terms of cost and space utilization.

Meanwhile. Manholes are installed to make it easier for people to enter or work for inspection or cleaning of underground facilities and for connecting or joining pipes. Manholes are mainly used for junction points of water and sewage, management of meters, communication lines, and electric lines. When a meter or the like is installed inside the manhole, it is difficult to install a communication cable for communicating with the facility inside the manhole, and there is an inconvenience that communication with the outside is impossible because the manhole enclosure is made of iron.

Accordingly, in the present technical field, there is a demand for a wireless communication device capable of efficiently transmitting a plurality of meter reading information, such as information on a state of an underground facility, which is difficult to communicate, and an aggregate building.

An object of the present invention is to provide a wireless communication device for transmitting a plurality of facility status information capable of efficiently transmitting status information of a plurality of facilities and a plurality of meter reading information.

According to an aspect of the present invention, a wireless communication device for transmitting facility status information is provided. The wireless communication device includes a sensing information receiving unit that receives status information of a plurality of facilities from a plurality of sensor modules, a first wireless communication unit that transmits status information of the plurality of facilities to a server, and horizontally secures status information of the plurality of facilities. Control to transmit the status information of the plurality of facilities to the communication device, such as street security, when the second wireless communication unit and the first wireless communication unit that transmits to the communication device cannot transmit the status information of the plurality of facilities to the server. It is implemented including a processor.

According to another aspect of the present invention, the wireless communication device is implemented further comprising a power supply for supplying power required for driving.

According to another aspect of the present invention, the sensing information receiving unit is implemented to receive state information of the plurality of facilities by wire.

According to another aspect of the present invention, the first wireless communication unit is implemented to transmit status information of the plurality of facilities to the server by using LPWAN (Low-Power Wide-Area Network) communication.

According to another aspect of the present invention, the second wireless communication unit is implemented to transmit state information of the plurality of facilities to the communication device such as street security using WPAN (Wireless Personal Area Network) communication.

According to another aspect of the present invention, the plurality of facilities exist underground, and the first wireless communication unit and the second wireless communication unit are implemented to be accommodated in a groove formed by being exposed to the ground of the manhole frame.

According to another aspect of the present invention, a wireless communication method for transmitting facility status information is provided. The wireless communication method includes receiving status information of a plurality of facilities from a plurality of sensor modules, requesting a response signal from a server, and when receiving a response signal from the server, status information of the plurality of facilities is transmitted to the server. And transmitting the status information of the plurality of facilities to a communication device such as a street security when the response signal is not received from the server.

According to another aspect of the present invention, the receiving of the state information of the plurality of facilities is implemented to receive the state information of the plurality of facilities by wire.

According to another aspect of the present invention, the transmitting of the status information to the server is implemented to transmit the status information of the plurality of facilities to the server using LPWAN (Low-Power Wide-Area Network) communication. .

According to another aspect of the present invention, the transmitting of the status information to the street security light communication device includes the status information of the plurality of facilities by using WPAN (Wireless Personal Area Network) communication. Is implemented to transmit to.

According to the present invention, there is provided a wireless communication device for transmitting a plurality of facility status information capable of efficiently transmitting status information of a plurality of facilities and a plurality of meter reading information.

1 shows a wireless communication system according to an embodiment of the present invention.
2 shows a wireless communication system according to another embodiment of the present invention.
3 shows a wireless communication system according to another embodiment of the present invention.
4 shows a wireless communication system according to another embodiment of the present invention.
5 shows an example in which a part of the wireless communication device according to the present invention is accommodated in a manhole frame formed around a manhole cover.
6 is a cross-sectional view illustrating an example of a manhole frame antenna structure that can be used in the embodiment of FIG. 5.
7 shows another example of a manhole frame antenna structure that can be used in the embodiment of FIG. 5.
8 shows an example of a wireless communication system to which the wireless communication device according to the present invention is applied.
9 shows another example of a wireless communication system to which the wireless communication device of the present invention is applied.
10 shows a wireless communication device for transmitting metering information according to an embodiment of the present invention.
11 is a flowchart illustrating a wireless communication method of a wireless communication device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments disclosed below. In addition, parts irrelevant to the present invention are omitted in the drawings in order to clearly disclose the present invention, and the same or similar reference numerals denote the same or similar components in the drawings.

Objects and effects of the present invention may be naturally understood or more apparent by the following description, and the objects and effects of the present invention are not limited only by the following description.

Objects, features and advantages of the present invention will become more apparent through the following detailed description. In addition, in describing the present invention, when it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a wireless communication system 100 according to an embodiment of the present invention.

Referring to FIG. 1, a wireless communication system 100 according to the present invention includes a water supply meter reading device 110, a wired/wireless gateway 130, a wireless communication network server 150, and a water supply meter reading company server 170.

The water supply meter reading device 110 reads water supply through a sensor and transmits the meter reading information to the wired/wireless gateway 130 by wire or wirelessly.

The water supply meter reading device 110 includes a meter reading sensor node 111, a processor 113, and a wired/wireless communication module 115. The meter reading sensor node 111 is connected to the processor 113 and measures water supply meter reading information through a sensor built therein. The processor 113 controls the meter reading sensor node 111 and the wired/wireless communication module 115 to transmit the information measured through the meter reading sensor node 111 to the wired/wireless gateway 130 through the wired/wireless communication module 115. . The wired/wireless communication module 115 is connected to the processor 113 and transmits and/or receives a wired/wireless signal.

The wired/wireless gateway 130 receives water supply meter reading information from a plurality of water supply meter reading devices 110 and transmits it to the wireless communication network server 150. The wired/wireless gateway 130 may communicate with the water supply meter reading device 110 through wired or wireless communication. Meanwhile, the wired/wireless gateway 130 may include an LPWAN module capable of low-power wide-area network (LPWAN) communication, and communicate with the wireless communication network server 150 through this. The wired/wireless gateway 130 may further include a WPAN module to perform communication with a wireless communication network server 150 as well as a communication device such as street security. A more detailed structure and function of the wired/wireless gateway 130 will be described in more detail through other drawings of the present specification and detailed description thereof. Meanwhile, the wired/wireless gateway 130 may transmit the meter reading information to the wireless communication network server 150 through a WPAN module.

Hereinafter, LPWAN communication will be described in more detail.

LPWAN (Low-Power Wide-Area Network) communication is a wide area wireless communication with a service range (coverage) of 10 km or more, and a wireless wide area with low power consumption that provides a communication speed of up to several hundred kilobits per second (kbps) or less. As a communication network, a low-power wide area network (LPWAN) is used as an Internet of Things (IoT) dedicated network by providing a communication speed of hundreds of bps to hundreds of Kbps per base station over a distance of about 10 kilometers (km). For example, the Internet of Things is scattered over a wide area for water gas, electricity meter reading, bicycle theft prevention, asset management, etc., the amount of data generated is very low, and the frequency of exchange is low, so the Internet of Things must operate for several years or more with a single battery. It is very suitable for devices and applications. Technologies for realizing LPWAN include LoRaWAN and SIGFOX, which use ISM license-free bands, and LTE-MTC (LTE Machine-Type Communications), which use mobile communication bands, and narrow-band things. Internet (NB-IoT) technology.

The wireless communication network server 150 receives water supply meter reading information from the wired/wireless gateway 130 and transmits it to the water supply meter reading company server 170. The wireless communication network server 150 includes an LPWAN base station 151, a wired communication network 153, and a water supply network server 155. The LPWAN base station 151 receives water supply meter reading information from the wired/wireless gateway 130 using LPWAN wireless communication. The wired communication network 153 receives water supply meter reading information from the LPWAN base station 151 using a wired backhaul network and transmits it to the water supply network server 155. The water supply network server 155 collects the meter reading information received from the wired communication network 153 and transmits it to the water supply meter reading company server 170.

The water supply meter reading company server 170 receives water supply meter reading information from the wireless communication network server 150, collects the information, and generates water bill information for each water supply meter reading node. The water supply meter reading company server 170 includes a water supply meter reading control server 171 and a water supply meter reading client 173. The water supply meter reading control server 171 receives water supply meter reading information from the wireless communication network server 150, collects the information, and generates data such as water bill information for each water supply meter reading node, and the water supply meter reading client 173 Transmit the required data by request. The water supply meter reading client 173 receives the data generated by the water supply meter reading control server 171.

2 shows a wireless communication system 200 according to another embodiment of the present invention.

Referring to FIG. 2, the wireless communication system 200 according to the present invention includes a water supply meter reading device 210, a wired/wireless gateway 230, a street security light communication network 250, and a water supply meter reading company server 270.

The water supply meter reading device 210 reads water supply through a sensor and transmits the meter reading information to the wired/wireless gateway 230 by wire or wirelessly.

The water supply meter reading device 210 includes a meter reading sensor node 211, a processor 213, and a wired/wireless communication module 215. The meter reading sensor node 211 is connected to the processor 213 and measures water supply meter reading information through a sensor built therein. The processor 213 controls the meter reading sensor node 211 and the wired/wireless communication module 215, and transmits information measured through the meter reading sensor node 211 to the wired/wireless gateway 230 through the wired/wireless communication module 215. . The wired/wireless communication module 215 is connected to the processor 213 and transmits and/or receives a wired/wireless signal.

The wired/wireless gateway 230 receives water supply meter reading information from a plurality of water supply meter reading devices 210 and transmits it to the street security light communication server 250. The wired/wireless gateway 230 may communicate with the water supply meter reading device 110 through wired or wireless communication. Meanwhile, the wired/wireless gateway 230 includes a WPAN module capable of wireless personal area network (WPAN) communication, and communicates with a communication server 250 such as street security through the wired/wireless gateway 230. By further including an LPWAN module, it is possible to communicate with a wireless communication network server as well as a communication server 250 such as street security. For a more detailed structure and function of the wired/wireless gateway 130, other drawings in the present specification and It will be described in more detail through the detailed description.

Hereinafter, WPAN (Wireless Personal Area Network) communication will be described in more detail.

WPAN communication is a wireless personal communication network to provide wireless service within 10m distance, and UWB, ZigBee, Bluetooth technology, etc. are used. ISM-BAND RF communication (10mW or less) bands such as 400MHz, 900MHz, and 2.4GHz (ZIGBEE/Bluetooth) may be used for WPAN communication.

The street security light communication network 250 receives water supply meter reading information from the wired/wireless gateway 230 and transmits it to the water supply meter reading company server 270. The street security light communication network 250 includes a street security light WPAN module 251, a street security light data repeater 253, a wired communication network 255, and a road lighting network server 257.

The street security light WPAN module 251 receives water supply meter reading information from the wired/wireless gateway 230 using WPAN wireless communication. The street security light data repeater 253 receives water supply meter reading information from the WPAN module 251 using wireless communication such as CDMA, LTE, and LAN, and transmits it to the wired communication network 255. The wired communication network 255 receives water supply meter reading information from the data repeater 253 such as street security using a wired backhaul network, and transmits it to the road lighting network server 257. The road lighting network server 257 collects the meter reading information received from the wired communication network 255 and transmits it to the waterworks meter reading company server 270.

The water supply meter reading company server 270 receives water supply meter reading information from the communication network 250 such as street security, collects the information, and generates water supply fee information for each water supply meter reading node. The water supply meter reading company server 270 includes a water supply meter reading control server 271 and a water supply meter reading client 273. The water supply meter reading control server 271 receives water supply meter reading information from the street security light communication network 250, collects the information, and generates data such as water bill information for each water supply meter reading node, and the water supply meter reading client 273 Transmit the necessary data at the request of The water supply meter reading client 273 receives the data generated by the water supply meter reading control server 271.

3 shows a wireless communication system 300 according to another embodiment of the present invention. Referring to FIG. 3, a wireless communication system 300 according to the present invention includes a water and sewage communication gateway 310, a wireless communication device 330 for street security, and a water supply control server 350.

The water supply and sewage communication gateway 310 receives the status of a plurality of facilities from a plurality of sensor modules existing underground and transmits the received state to the water supply control server 350. The water and sewage communication gateway 310 includes a first water and sewage communication module 311, a second water and sewage communication module 313, a wired communication module 315, and a control and power supply device 317.

The first water supply and sewage communication module 311 transmits the information received from the wired communication module 315 to the water supply control server 350. The first water supply and sewage communication module 311 includes an LPWAN dedicated wireless communication antenna capable of communicating with a Low-Power Wide-Area Network (LPWAN), and the received information to the water supply control server 350 using LPWAN communication. Transmit. The first water supply and sewage communication module 311 includes a LoRaWAN or LTE Machine-Type Communications (LTE-MTC) module, and uses a LoRa or LTE-MTC communication to control a water supply system. Communication with 350 can be performed. Meanwhile, the first water supply and sewage communication module 311 may include a wireless communication antenna dedicated to WPAN capable of wireless personal area network (WPAN) communication, and may transmit the received information to the water supply control server 350 using WPAN communication.

The second water supply and sewage communication module 313 receives information from the wired communication module 315 when the first water supply and sewage communication module 311 is in a sound area or cannot communicate normally due to defects, etc. 330). The second water and sewage communication module 313 includes a wireless communication antenna for exclusive use of WPAN capable of wireless personal area network (WPAN) communication, and transmits the received information to the wireless communication device 330 such as street security by using WPAN communication. The second water and sewage communication module 313 may include a BLE or ZigBee module and communicate with a wireless communication device 330 such as street security using BLE or ZigBee communication.

The wired communication module 313 receives states of a plurality of facilities from a plurality of sensor modules existing underground. The plurality of facilities may include a water supply meter reading device, a flow rate measurement device, a flow rate measurement device, and the like. The wired communication module 313 may be an RS-232 or RS-485 module.

The control and power supply device 317 controls the wired communication module 315 to receive the status of a plurality of facilities from a plurality of sensor modules existing underground, and the first water and sewage communication module 311 or the second water and sewage communication module It is transmitted to the water supply control server 350 using 313. The control and power supply device 317 basically performs wireless communication with the water supply control server 350 through a wireless communication network of a mobile communication company or a local government's own base station using an LPWAN module built into the first water supply and sewage communication module 311 Is configured to However, when the LPWAN of the first water supply and sewage communication module 311 is in a wireless shaded area, or when communication is impossible due to a problem, etc., the server using the WPAN wireless communication module of the second water supply and sewage communication module 313 It transmits the data to be transmitted to the wireless communication device 330, such as street security. The street security light wireless communication device 330 is a communication device using WPAN wireless communication, and basically, a WPAN wireless communication module is provided to wirelessly control the lighting of the street security light, but by expanding its function, the present invention Status information of a plurality of facilities is received from the second water and sewage communication module 313 and transmitted to the server.

Meanwhile, the control and power supply device 317 supplies power required for driving the water supply and sewage communication gateway 310. The control and power supply device 317 may supply power required for driving the water supply and sewage communication gateway 310 using power charged by sunlight, including a solar cell.

The street security light wireless communication device 330 controls the lighting of the street security light, and transmits the information received from the water and sewage communication gateway 310 to the water supply control server 350. The street security light wireless communication device 330 includes a first street security light communication module 331, a second street security light communication module 333, a heterogeneous protocol control unit 335, and a lighting control module 337.

The first street security light communication module 331 receives control information for the street security light. The first street security light communication module 331 includes an LPWAN dedicated wireless communication antenna capable of communicating with a Low-Power Wide-Area Network (LPWAN). The first street security light communication module 331 includes a LoRa (LoRaWAN) or LTE-MTC (LTE Machine-Type Communications) module, and uses a LoRa or LTE-MTC communication It is possible to communicate with an external device such as a security control server and/or an external server.

Second street security light communication module 333 When the first water supply and sewage communication module 311 is in a transliteration area, or when normal communication is not possible due to defects, etc., it receives information from the second water and sewage communication module 313 to control the water supply system ( 350). The second street security light communication module 333 includes a wireless communication antenna dedicated to WPAN capable of communicating with a wireless personal area network (WPAN). The second street security light communication module 333 may communicate with the second water and sewage communication module 313 using BLE or ZigBee communication, including a BLE or ZigBee module.

The heterogeneous protocol control unit 335 assigns different unique numbers to the protocol of the first street security light communication module 331 and the protocol of the second street security light communication module 333. Accordingly, the data to be transmitted by the water and sewage communication gateway 310 recognizes a heterogeneous identifier assigned to the front, rear, or middle of the unique number, and the water supply control server 350 without checking the contents of the data transmitted from the water and sewage communication gateway 310 ) As a kind of'delivery to home delivery'. This is a method of checking'heterogeneous protocols' at the level of the client connected to the server and finally delivering it to the server of the relevant department.

The lighting control module 337 performs a lighting control function, which is an original function of a street security lamp. At this time, a signal for lighting control is received from the outside through the first street security light communication module 331, and lighting is controlled according to the received control signal.

The water supply control server 350 receives water supply meter reading information from the water supply and sewage communication gateway 310 or the wireless communication device 330 such as street security, collects the information, and generates water supply fee information for each water supply meter reading node. The water supply control server 350 may communicate with the water and sewage communication gateway 310 or the wireless communication device 330 such as street security in various ways such as LPWAN or WPAN communication.

4 shows a wireless communication system 400 according to another embodiment of the present invention.

Referring to FIG. 4, a wireless communication system 400 according to the present invention includes a wireless communication device 410, a water supply control server 470, and a communication device 490 such as street security.

The wireless communication device 410 includes a sensing information receiving unit 411, a first wireless communication unit 413, a second wireless communication unit 415, a processor 417, and a power supply unit 419.

The sensing information receiving unit 411 receives states of a plurality of facilities from a plurality of sensor modules existing underground. The plurality of facilities may include a water supply meter reading device, a flow rate measurement device, a flow rate measurement device, and the like. The sensing information receiving unit 411 may be an RS-232 or RS-485 module. The sensing information receiving unit 411 may configure serial communication (UART, LIN, SPI, I2C, USB, I2S, CAN, MOST50, etc.) to be connected to the processor 417.

The first wireless communication unit 413 transmits the information received from the sensing information receiving unit 411 to the water supply control server 470. The first wireless communication unit 413 includes an LPWAN dedicated wireless communication antenna capable of communicating with a Low-Power Wide-Area Network (LPWAN). The first wireless communication unit 413 includes a LoRa (LoRaWAN) or LTE-MTC (LTE Machine-Type Communications) module, using a LoRa or LTE-MTC communication to a water supply control server ( 470). On the other hand, the first wireless communication unit 413 includes a WPAN dedicated wireless communication antenna capable of WPAN communication, and transmits the sensing information received from the sensing information receiving unit 411 to the water supply control server 470 through WPAN communication. You can also do it.

The second wireless communication unit 415 receives information from the sensing information receiving unit 411 and transmits the information to a wireless communication device such as street security when the first wireless communication unit 413 is in a shaded area or is unable to communicate normally due to a defect. . The second wireless communication unit 415 includes a wireless communication antenna dedicated to WPAN capable of wireless personal area network (WPAN) communication. The second wireless communication unit 415 may include a BLE or ZigBee module to communicate with a communication device 490 such as street security using BLE or ZigBee communication.

The processor 417 uses the sensing information receiving unit 411 to receive the states of a plurality of facilities from a plurality of sensor modules existing underground, and the first wireless communication unit 413 or the second wireless communication unit 415 It is transmitted to the water supply control server 470 by using. The processor 417 is basically configured to perform direct wireless communication with a mobile communication company and a local government's own network base station through an LPWAN or WPAN module built into the first wireless communication unit 413. However, when the LPWAN or WPAN module of the first wireless communication unit 413 is in a wireless shaded area or is in a state in which communication is impossible due to a problem, etc., water supply control through the WPAN wireless module of the second wireless communication unit 415 Data to be transmitted to the server 470 is transmitted to the communication device 490 such as street security. The street security light communication device 490 is basically equipped with an LPWAN wireless communication module in order to wirelessly control the lighting of the street security light, but expands its function to further include a WPAN wireless communication module to provide a second wireless communication unit ( It is provided to receive status information of a plurality of underground facilities from 415 and transmit it to the water and sewage control server 470.

Meanwhile, the processor 417 transmits a request signal to the water supply control server 470 using the first wireless communication unit 413 and receives a response signal, through the first wireless communication unit 413 When the state information of the plurality of facilities is transmitted and the response signal from the water supply control server 470 is not received, the plurality of the plurality of facilities are transmitted to the street security light communication device 490 through the second wireless communication unit 417. It is possible to transmit status information of facilities.

The power supply unit 419 supplies power required for driving the wireless communication device 410. Meanwhile, the power supply unit 419 may supply power necessary for driving the wireless communication device 410 using power charged by sunlight, including a solar cell.

5 shows an example in which a part of the wireless communication device according to the present invention is accommodated in a manhole frame formed around a manhole cover. For example, a part of the wireless communication device according to the embodiment of FIG. 4 may be accommodated inside the manhole frame. Referring to FIG. 5, the first wireless communication unit 430, the second wireless communication unit 450, and the power supply unit 490 may be accommodated in a U-shaped groove on the upper surface of the manhole frame. The first wireless communication unit 430 and the second wireless communication unit 450 are not disturbed by the manhole cover, and can smoothly communicate with the water supply control server 500 on the ground or the communication device 600 such as street security. .

In addition, when the power supply unit 490 is configured in a form including a solar cell, it is exposed to the ground and smoothly performs charging by sunlight, and the wireless communication device 400 uses the charged power. Power required for driving can be supplied.

6 is a cross-sectional view illustrating an example of a manhole frame antenna structure 600 that can be used in the embodiment of FIG. 5.

Referring to FIG. 6, the manhole frame antenna structure 600 according to the present invention may include a silicon buffer tube 610 and an insulator 630 and a wireless communication antenna 650. The silicone buffer tube 610 is formed around the wireless communication antenna 650 to protect the wireless communication antenna 650 from vibration and external shocks caused by the movement of the vehicle, and to prevent departure, durability against ultraviolet rays such as sunlight, and the antenna In consideration of the impedance of the silicon molding method, it may be formed in a multi-layered structure, and a U-shaped groove is formed in the manhole frame and inserted into the space to be coupled. The wireless communication antenna 650 may be the first wireless communication unit 430 or the second wireless communication unit 450 of FIG. 4. An empty space may be formed inside the silicon buffer tube 610 in an area formed under the wireless communication antenna 650 in order to more alleviate an impact from the top. In addition, the silicon buffer tube 610 may be formed in a partially open structure to facilitate insertion or removal of the wireless communication antenna 650. Meanwhile, an open portion of the silicon buffer tube 610 may be formed outside the circumference of the manhole frame so that the wireless communication antenna 650 can be conveniently inserted or removed.

The insulator 630 is formed under the silicon buffer tube 610 to cut off communication from the underground to prevent communication noise of the wireless communication antenna 650. Meanwhile, the insulator 630 may be formed to cover all or part of the bottom surface of the U-shaped groove formed in the manhole frame.

* FIG. 7 shows another example of a manhole frame antenna structure 700 that can be used in the embodiment of FIG. 5.

Referring to FIG. 7, the manhole frame antenna structure 700 according to the present invention may include a silicon buffer tube 710 and an insulator 730, and a wireless communication antenna 750. The silicon buffer tube 710 is formed around the wireless communication antenna 750 to protect the wireless communication antenna 750 from vibration and external shock caused by the movement of the vehicle, and to prevent departure, durability against ultraviolet rays such as sunlight, and the antenna In consideration of the impedance of the silicon molding method, it may be formed in a multi-layered structure, and a U-shaped groove is formed in the manhole frame and inserted into the space to be coupled. The wireless communication antenna 750 may be the first wireless communication unit 430 or the second wireless communication unit 450 of FIG. 4. The silicon buffer tube 710 prevents the separation of the wireless communication antenna 750, protects the wireless communication antenna 750 from rain, etc., and has an A-shaped cross section with a gentle upper portion as shown in FIG. 7 to absorb shock. The wireless communication antenna 750 may be accommodated in an A-shaped completely molded space.

The insulator 730 is formed under the silicon buffer tube 710 to disconnect communication from the underground to prevent communication noise of the wireless communication antenna 750. Meanwhile, the insulator 730 may be formed to cover all or part of the bottom surface of the U-shaped groove formed in the manhole frame.

8 shows an example of a wireless communication system 800 to which a wireless communication device according to the present invention is applied. Referring to FIG. 8, a wireless communication system 800 includes a wireless communication device 810, a water and sewage control server 830, and a communication device 850 such as street security. When the wireless communication device 810 is located in a wireless communication area where LPWA communication with the water and sewage control server 830 is not possible, it automatically switches to the WPAN communication mode to communicate with the communication device 850 such as street security, and street security When WPAN communication with the communication device 850 is not possible, it automatically switches back to the LPWA communication mode to perform communication with the water and sewage control server 830. In this way, communication can be performed by switching to communication suitable for real-time conditions.

9 shows another example of a wireless communication system 900 to which the wireless communication device of the present invention is applied. Referring to FIG. 9, the wireless communication device 910 according to the present invention receives the states of a plurality of facilities from a plurality of sensor modules 920 existing underground and transmits them to the water supply control server 930. On the other hand, when the wireless communication device 910 is in a transliteration area where communication with the water supply control server 930 cannot be performed, the state information received from the plurality of sensor modules 920 underground is transmitted to the street security light communication device 940 The communication device 940 transmits the information received from the wireless communication device 910 to the water supply control server 930.

Meanwhile, the street security light communication device 940 is wirelessly connected to the street security light control server 950 to transmit and receive information about lighting control of the street security light. The street security light control server 950 is connected to a repeater 951 through wireless communication, and the repeater 951 is connected to a plurality of security lights 953 through ZigBee or RF communication, so that the ZigBee or RF communication Wireless communication with a plurality of security lights 953 may be performed by using. In addition, the repeater 951 may perform wireless communication with the control server 950 such as street security using a wireless communication network such as WCDMA.

Meanwhile, since the water supply control server 930 is connected to the plurality of meter reading terminals 931 through wireless communication, the meter reading information may be received from the plurality of meter reading terminals 931. In addition, the water supply control server 930 is connected to the client 933 by wire or wirelessly, and generates and transmits necessary data regarding water supply meter reading information at the request of the client 933. The client 933 receives data generated by the water supply control server 930.

10 shows a wireless communication device for transmitting metering information according to an embodiment of the present invention.

Referring to FIG. 10, the wireless communication device according to the present invention may include a plurality of adjacent meters 1010, a meter reading information processing unit 1030, an RF unit 1050, an antenna 1070, and a power supply unit 1090. I can.

Each meter 1010 constituting the plurality of meters 1010 is assigned a unique ID, and the meter reading information processing unit 1030 receives the meter reading value from each meter 1010, generates meter reading information, and It transmits to an external server through the unit 1050 and the antenna 1070. In this case, the transmitted meter reading information may consist of a list of meter reading values corresponding to the unique ID and the unique ID of each meter 1010. For example, when there are four meters, a list of meter reading information as shown in Table 1 may be generated.

ID Meter reading information A a liter B b liters C c liters D d liters

The RF unit 1050 may perform communication with the plurality of meters 1010 using RS-485 communication. Meanwhile, the RF unit 1050 includes two of the main RF unit 1051 and the sub RF unit 1053. It can be composed of two RF chips or RF modules. The meter reading information processing unit 1030 may select one of the main RF unit 1051 and the sub RF unit 1053 to transmit meter reading information. As an example, the meter reading information processing unit 1030 performs communication (transmitting meter reading information and/or receiving control information related to meter reading) using the main RF unit 1051 by default, but the main RF unit 1051 is normally When communication with the meter 1010 of the server or the server cannot be performed (for example, the main RF unit 1051 is broken or communication is difficult due to shadow/noise), communication using the sub RF unit 1053 Can be done.

That is, the sub RF unit 1053 receives data from the meter 1010 and receives data from the main RF unit 1010 when the main RF unit 1051 is disconnected from communication with the meter 1010 and can normally perform communication functions with the server. It can be transmitted to the RF unit 1051.

The power supply unit 1090 supplies power required for driving the RF unit 1050. The power supply unit 1090 may be installed as a solar panel, and may supply power required for driving the RF unit 1050 using power charged by sunlight. In addition, the power supply unit 1090 may supply power through an external power source or may supply power through a pre-charged rechargeable battery. Meanwhile, the power supply unit 1090 may be connected to not only the RF unit 1050 but also the plurality of meters 1010 to supply power required for driving the meter 1010.

11 is a flowchart illustrating a wireless communication method of a wireless communication device according to an embodiment of the present invention.

Referring to FIG. 11, the wireless communication device receives state information of a plurality of facilities (S1110). The state information of the plurality of facilities may receive the states of the plurality of facilities through wired or wireless communication from a plurality of sensor modules existing underground. The plurality of facilities may include a water supply meter reading device, a flow rate measurement device, a flow rate measurement device, and the like. The wired communication may be communication using an RS-232 or RS-485 module.

Next, the wireless communication device requests a response signal from the water supply control server to transmit the received information to the water supply control server (S1130), and determines whether or not the response signal has been received (S1150). Determination of whether the response signal has been received may be determined by whether or not the response signal is received within a limited time, and when the response signal is not received, the request signal for the response signal may be transmitted a predetermined number of times. .

When a response signal is received from the water supply control server, status information of a plurality of facilities is transmitted to the water supply control server (S1170). Communication with the water supply control server may preferably use LPWAN (Low-Power Wide-Area Network) communication, but is not limited thereto, and various communication methods such as WPAN may be used.

Meanwhile, as a result of determining whether a response signal has been received in step S1150, the wireless communication device transmits status information of a plurality of facilities to a communication device such as street security when the response signal is not received from the water supply control server (S1190). . The wireless communication device transmits status information of a plurality of facilities to a wireless communication device such as a street security when it is in a shadow area where communication with a water supply control server is impossible, or when normal communication is not possible due to a defect or the like. Communication with wireless communication devices such as street security can use WPAN (Wireless Personal Area Network) communication.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments of the present invention described above may be implemented separately or in combination with each other.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (10)

In the apparatus for transmitting facility status information,
A first communication module configured to receive control information for lighting;
A second communication module configured to transmit and receive state information on a plurality of facilities;
A heterogeneous protocol control unit configured to check a first protocol of the first communication module and a second protocol of the second communication module; And
Lighting control module configured to control lighting according to the control information
Containing, device. The method of claim 1,
The first protocol and the second protocol, characterized in that a heterogeneous identifier is assigned to the device. The method of claim 1,
The heterogeneous protocol control unit,
When the identifier assigned to the second protocol is recognized from the input data, the input data is transmitted to an external device using the second communication module. The method of claim 1,
The device is provided in a street security or the like, and the status information includes water supply meter reading information. The method of claim 1,
The first communication module receives the control information using a first antenna for low-power wide-area network (LPWAN) communication, and the second communication module is a second communication module for wireless personal area network (WPAN) communication. The device, characterized in that receiving the status information using an antenna. In the operating method of the apparatus for transmitting facility status information,
Receiving data through at least one of a first communication module and a second communication module provided in the device;
Checking an identifier of the data based on a first protocol of the first communication module and a second protocol of the second communication module; And
When the identifier assigned to the second protocol is recognized from the data, transferring the data to an external device using the second communication module
Containing, method. The method of claim 6,
The device is provided in a street security light,
The data received through the first communication module includes control information for lighting,
The method, characterized in that the data received through the second communication module includes status information on a plurality of facilities. The method of claim 7,
The state information, characterized in that it comprises water supply meter reading information. The method of claim 7,
After the step of checking,
When the identifier assigned to the first protocol is recognized from the data, the method further comprises controlling lighting of the street light based on the data. The method of claim 7,
The first communication module receives the control information using a first antenna for low-power wide-area network (LPWAN) communication, and the second communication module is a second communication module for wireless personal area network (WPAN) communication. A method, characterized in that receiving the status information using an antenna.

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