WO2020001038A1

WO2020001038A1 - Multi-network integration-based smart urban illumination management system and positioning method

Info

Publication number: WO2020001038A1
Application number: PCT/CN2019/075197
Authority: WO
Inventors: 蒋伟楷
Original assignee: 广州市浩洋电子股份有限公司
Priority date: 2018-06-29
Filing date: 2019-02-15
Publication date: 2020-01-02
Also published as: CN108834279B; CN108834279A

Abstract

Disclosed in the present invention are a multi-network integration-based smart urban illumination management system and a positioning method, said system comprising a remote cloud server, lamps, and smart lamp covers which are mounted on the lamps respectively for monitoring the operation of the lamps; each smart lamp cover is internally provided with an NB_IOT terminal, or a PLC cable anti-theft terminal, or a LORA terminal, or the NB_IOT terminal and the PLC cable anti-theft terminal, or the LORA terminal and the PLC cable anti-theft terminal; the NB_IOT terminal or the LORA terminal is connected to the internal line of the lamp and is used for monitoring the state of the lamp; and the PLC cable anti-theft terminal is connected to a cable where the lamp is located and is used for monitoring the state of the cable where the lamp is located. The remote cloud server implements network communication with the NB_IOT terminal by means of an NB_IOT wide area network, or implements network communication with the PLC cable anti-theft terminal by means of the NB_IOT wide area network and a power line carrier to NB_IOT gateway, or implements network communication with the LORA terminal by means of the NB_IOT wide area network and an LORA to NB_IOT gateway, thereby realizing remote monitoring of the lamps.

Description

Title of invention: Intelligent management system and positioning method for urban lighting based on multi-network integration

[0001] The present invention relates to the field of smart city lighting and the Internet of Things, and more particularly, to an intelligent management system and positioning method for urban lighting based on multi-network fusion.

Background technique

[0002] As the country gradually promotes the construction of smart cities, traditional urban lighting management is increasingly unable to keep up with the development of the times. They generally have the following problems:

[0003] A) Most urban lighting fixtures do not have intelligent management, which can not achieve single-point control, and maintenance is very cumbersome, requires a large number of personnel to constantly inspect, and is very labor-intensive.

[0004] B) A small part of the city lighting is semi-intelligent, showing that it can only be controlled in groups, but it is not possible to remotely know the position of the abnormal lamp, which is also not easy to maintain.

[0005] C) In addition, a small number of urban lighting fixtures are intelligent. But its lamp-to-lamp communication is based on short-range LAN technology. For example: zigbee technology. The fatal disadvantage is that only luminaires that meet specific requirements can be connected to their system. For example: The luminaire requires a specific electrical interface, the antenna needs to be installed at the height of the light pole, etc. For the intelligent upgrade of common traditional urban lighting products, it has a very large technical risk and a very high cost of renovation. In short, there is no universality for large-scale promotion.

technical problem

[0006] In order to overcome the existing technical shortcomings, the present invention provides an intelligent management system and positioning method for urban lighting based on multi-network fusion, which can intelligently manage lamps quickly, and has high versatility and low cost.

Problem solution

Technical solutions

[0007] In order to achieve the object of the present invention, the following technical solutions are adopted to achieve it:

[0008] An intelligent management system for urban lighting based on multi-network integration includes a remote cloud server, a luminaire, and a smart lamp cover respectively installed on the luminaire and used to monitor the operation of the luminaire. A NB_IOT terminal is installed in the smart lamp cover, or A PLC cable anti-theft terminal, or a LORA terminal, or a NB_IOT terminal and a PLC cable anti-theft terminal, or a LORA terminal and a PLC cable anti-theft terminal, said NB_IOT The terminal or LORA terminal is connected to the internal circuit of the lamp to monitor the state of the lamp, and the PLC cable anti-theft terminal is connected to the cable where the lamp is located to monitor the state of the cable where the lamp is located; the remote cloud server is implemented through the NB_IOT WAN and NB_IOT terminal Network communication, or network communication through NB_IOT WAN and power carrier to NB_IOT gateway and PLC cable anti-theft terminal, or network communication with LORA terminal through NB_IOT WAN and LORA to NB_IOT gateway, remote collection and management of lamps, and providing geographic information of lamps .

[0009] In the present invention, the remote cloud server is mainly used to remotely collect and manage lamps and provide geographic information of the lamps. The remote cloud server is preferably an intelligent management server of urban lamps based on GIS geographic information, which can be conveniently collected and managed remotely. Fixtures, and provide accurate geographic information of abnormal fixtures.

[0010] The intelligent lamp cover is installed on the lamp and is mainly used to monitor the operation of the lamp. The present invention directly installs the intelligent lamp cover on the lamp, compared with the technical solution of replacing the traditional lamp with a smart lamp pole in the prior art. It is more convenient and greatly saves costs, and it is more practical.

[0011] An NB_IOT terminal, or a PLC cable anti-theft terminal, or a LORA terminal, or an NB_IO T terminal and a PLC cable anti-theft terminal, or a LORA terminal and a PLC cable anti-theft terminal are installed in the smart lamp cover, and are connected to the fire line and neutral line of the lamp Therefore, the NB_IOT terminal or the LORA terminal can be used to monitor the lamps and lanterns, to realize the remote switch, status query and anti-theft functions of the lamps and lanterns, and to monitor the cables through the PLC cable anti-theft terminal to prevent the cables from being stolen or damaged. Installing various network terminals in the intelligent light cover can optimize the combination of their respective advantages. Compared with a single network, the reliability and cost-effectiveness of a mixed network of different networks is higher.

[0012] The remote cloud server and the NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway implement network communication through the NB_IOT wide area network. The NB_IOT wide area network is also known as the narrowband Internet of Things. It is an important branch of the Internet of Everything. The NB_IOT wide area network is built on The cellular network can efficiently connect the network, and has the beneficial effects of wide coverage, multiple connections, fast speed, low deployment cost, low power consumption, and excellent architecture.

[0013] A gateway, also known as an inter-network connector and a protocol converter, is used to connect a terminal and a remote cloud server to achieve stable network operation and normal communication between networks. Power carrier is a communication method unique to the power system. Power carrier communication refers to the technology that uses existing power lines to transmit analog or digital signals at high speed through the carrier method. It has no need to re-establish the network and can transmit data as long as there are wires. Beneficial Effect.

[0014] Further, the remote cloud server includes a general server and at least one urban area controller, the general server realizes mutual signal transmission with the urban area controller through Ethernet, and the urban area controller communicates with the location through the NB_IOT wide area network The NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway or base station in the area realizes mutual signal transmission, or the base station and the NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway in the area realizes mutual signal transmission, The power carrier to the NB_IOT gateway and the PLC cable anti-theft terminal realize the mutual transmission of signals, or the LORA to the NB_IOT gateway and the LORA terminal realize the mutual transmission of signals, thereby monitoring the operation of the lamps and cables.

[0015] The general server is used to send signals to the urban area controller or receive signals transmitted by the urban area controller, and the urban area controller is used to process the signals transmitted by the general server to the NB_IOT terminal or PLC in its area after processing. The cable anti-theft terminal or LORA terminal; or the signal transmitted by the NB_I OT terminal or PLC cable anti-theft terminal or LORA terminal in its area is processed and transmitted to the general server, so as to monitor the operation of the lamp.

[0016] Further, the urban area controller includes an MCU control module, a wireless transceiver module, a flash data storage module circuit, and a network data conversion module circuit, and the MCU control module and the wireless transceiver module, the flash data storage module circuit, and The network data conversion module circuit is used to handle network data processing and circuit control. The wireless transceiver module is mainly responsible for wirelessly receiving or sending network data of the MCU control module. The network data conversion module circuit is mainly responsible for Ethernet Receiving and sending data, and transmitting the Ethernet data to the MCU control module or sending the data of the MCU control module through the Ethernet; the Flash data storage module circuit is mainly responsible for storing the related information of the lamps and the related information queryed by the urban area controller. Maintain logs.

[0017] Further, the urban area controller further includes an AC switching power supply, a filter circuit, a voltage conversion module, an input isolation transformer, and an output isolation transformer, and the AC switching power supply, the filter circuit, and the voltage conversion module are sequentially connected, and The voltage conversion module is respectively connected to the wireless transceiver module, the MCU control module, and the Flash data storage module circuit. The AC switching power supply is connected to an external circuit and is used to convert 100 ~ 2 40V high voltage to 5V low voltage. Level power supply sources are used by filter circuits and voltage conversion modules, respectively. The voltage conversion modules convert 5V voltage to 3.3V voltage. As the second level power supply source of the urban area controller, they are provided to the wireless transceiver module and MCU control module to And Flash data storage module circuit; the input isolation transformer and output isolation transformer are respectively connected to the network data conversion module circuit, and are mainly responsible for electrically isolating the Ethernet communication.

[0018] Further, an antenna is installed around the inner edge of the smart lamp cover, the antenna and the NB_IOT terminal in the smart lamp cover, or a PLC cable anti-theft terminal, or a LORA terminal, or a NB_IOT terminal and a PLC cable anti-theft terminal, or The signal communication between the LORA terminal and the PLC cable anti-theft terminal is used to enhance the sending and receiving signals of the terminal in the smart lamp cover, and the inner edge of the smart lamp cover is provided with a wire slot for installing an antenna.

[0019] In the present invention, the smart lamp cover adopts an integrated design of the antenna and the lamp cover, and the antenna is integrated into the edge of the smart lamp cover. This wireless antenna installation method has the beneficial effects of being simple, convenient, and easy to install. Further, a signal amplifier is designed on the signal source circuit in the intelligent lamp cover, which is beneficial to further enhance the signal gain effect. Further, in the selection of the signal frequency band, it is preferable to select a low-frequency signal with strong diffraction ability, which is beneficial to achieve the signal gain effect. For example, selecting a low-frequency signal with a frequency of less than 1GHz, rather than the common 2.4G outside, is beneficial to Signal gain. Further, a flexible antenna is used in the antenna design, and the flexible antenna can be flexibly bent, which can facilitate winding the antenna to the edge of the lamp cover and enhance the signal receiving area. Further, in terms of the structural design of the lamp cover, the wire groove for placing the antenna is made of a non-metallic material that facilitates signal penetration or a dark hole is provided at the wire groove, which can avoid the blocking of the signal by the shield as much as possible, compared to traditional wireless The signal can effectively improve the penetration of the signal.

[0020] Further, the smart lamp cover is provided with an NB_IOT terminal, or a PLC cable anti-theft terminal, or a LORA terminal, or an NB_IOT terminal and a PLC cable anti-theft terminal, or an LO RA terminal and a PLC cable anti-theft. A receiving slot for the terminal.

[0021] Further, the power supply circuit of the smart lamp cover includes mains power and a backup battery, an electronic switch module is provided in the smart lamp cover, and the electronic switch module is connected to a low power consumption circuit in the smart lamp cover, In addition, the electronic switch module is selectively connected to the mains and the backup battery, and is powered by the mains or the backup battery for the low power consumption circuit in the smart lamp cover. A switching power supply is provided between the electronic switch module and the mains connection. The on-off of the mains is realized by opening and closing the switching power supply; the low-power consumption circuit is connected to the antenna in the smart lamp cover and other lines, and powers the antenna and other lines in the smart lamp cover, respectively.

[0022] In the present invention, other lines include lines of the NB_IOT terminal or the PLC cable anti-theft terminal or LORA terminal installed on the smart lamp cover, so that the low-power circuit can supply power to the NB_IOT terminal or the PLC cable anti-theft terminal or LORA terminal to ensure that NB_IOT terminal or PLC cable anti-theft terminal or LORA terminal works normally [0023] Further, a door magnetic sensor switch for implementing a door magnetic alarm function in communication with a remote control terminal is further provided in the smart lamp cover, and the door magnetic sensor switch is connected to a low power consumption circuit, and The power consumption circuit realizes power supply.

[0024] The door magnetic sensor switch is mainly used for anti-theft, in order to prevent the smart lamp cover from being illegally opened by others when it is installed on the lamp, a door magnetic sensor switch is provided on the smart lamp cover, the door magnetic sensor switch Signal transmission through NB_IOT WAN and remote cloud server. When the smart light cover is opened illegally, the door sensor switch will immediately transmit the alarm information to the remote cloud server, and then notify the staff to realize the anti-theft function.

[0025] Further, the PLC cable anti-theft terminal includes a PLC transmitter and a PLC receiver, the PLC receiver communicates with a remote service terminal network, and the PLC transmitter periodically transmits a data packet to the PLC receiver through a cable. The PLC receiver selects whether to transmit the signal to the remote service terminal to realize the cable anti-theft monitoring according to whether the data packet of the PLC transmitter is received.

[0026] Further, the circuit module of the PLC transmitter includes: a power supply battery, an MCU control circuit, and a power carrier transmission module. The MCU control circuit of the PLC transmitter is connected to a power carrier transmission module and realizes mutual signal transmission, and the power supply battery supplies power to the MCU control circuit and the power carrier transmission module.

[0027] Further, the circuit module of the PLC receiver includes: a power supply battery, an MCU control circuit, a power carrier receiving module, and an NB_IOT wireless transceiver module. The power carrier receiving module communicates with the PLC transmitter power carrier transmitting module through a cable, and realizes signal transmission and signal reception through the cable. The NB_IOT wireless transceiver module and the remote cloud server implement network communication through the NB_IOT wide area network.

[0028] Further, the data packet is a heartbeat signal packet, and the PLC transmitter periodically transmits the heartbeat signal packet to the PLC receiver through a cable, and if the PLC receiver receives the heartbeat signal packet within a set time, it indicates a cable The line is normal. If the PLC receiver does not receive the heartbeat signal packet within the set time, it indicates that the cable line is abnormal, and the alarm signal is transmitted to the remote cloud server through the NB_IOT wireless transceiver module.

[0029] A positioning method suitable for the above-mentioned multi-network integration-based urban lighting intelligent management system, the system includes a remote cloud server, a lamp, and a smart lamp cover respectively installed on the lamp and used to monitor the operation of the lamp; The LORA terminal in the smart lamp cover, the LORA to NB_IOT gateway used to convert the LORA network to the NB_IOT network for network communication, and the luminaire positioning method includes the following positioning steps: [0030] SI: use the lamps to be positioned as the positioning center, select the LORA to NB_IOT gateways around the 3 positioning centers, and obtain the latitude and longitude information of the selected 3 LORA to NB_IOT gateways;

[0031] S2: Calculate the distances between the positioning center and the three LORA to NB_IOT gateways respectively;

[0032] S3: Calculate the latitude and longitude of the positioning center according to the latitude and longitude information of the three LORA to NB_IOT gateways and the three distance information calculated in step S2 to determine the position of the required positioning lamp;

[0033] In step S1, the method for obtaining the latitude and longitude information of the LORA to NB_IOT gateway is:

[0034] Sl-1: LORA to NB_IOT gateway sends request signals to nearby base stations multiple times, respectively.

The NB_IOT gateway selects three of the base stations according to the received base station response signal, obtains the latitude and longitude information of the selected base station, and the time at which each base station sends a response signal to the LORA to NB_IOT gateway; [0035] S1-2: Calculate the LORA transfer The distance between the NB_IOT gateway and 3 base stations;

[0036] S1-3: Calculate the latitude and longitude of the LORA to NB_IOT gateway according to the distance from the LORA to NB_IOT gateway and the latitude and longitude information of the three base stations calculated in step S1-2.

[0037] Further, in step S1-1, the LORA to NB_IOT gateway sends multiple request signals to nearby base stations respectively through the NB_IOT wide area network, and the LORA to NB_IOT gateway selects three of the base stations according to the received base station response signal, among which The three base stations are base station 1, base station 2, and base station 3. The latitude and longitude of base station 1 is (XI, Y1); the latitude and longitude of base station 2 is (X2, Y2); the latitude and longitude of base station 3 is (X3, Y3)

; LORA turn

The average time T1, T2 and T3 for the NB_IOT gateway to receive the response signals from the base station 1, base station 2 and base station 3.

[0038] Further, in step S1-2, the distance R1 between the LOR A to NB_IOT gateway and the base station 1 and the distance between the LORA to NB_IOT gateway and the base station 2 are respectively calculated according to the distance and time calculation formula R = TxC. Distance R2, and the distance R3 between the LORA to NB_IOT gateway and base station 3; where C represents the electromagnetic wave transmission speed, which is a known constant, and T represents the average time for the LORA to NB_IOT gateway to receive the response signals from base station 1, base station 2, and base station 3. Tl, T2, and T3 are calculated by step S1-1.

[0039] Further, the operation steps of step S1-3 include: using the latitude and longitude of 3 base stations as the center of the circle, and using the distance between the LO RA to NB_IOT gateway and the 3 base stations as the radius to make 3 circles, so that The intersection point of the three circles is the location of the LORA to NB_IOT gateway; according to the calculation formula of the three base stations and the LORA to NB_IOT gateway, R1 = V ((X1-X) ^A 2+ (Y1-Y) ^A 2), R2 = V ((X2-X) ^A 2+ (Y2-Y) ^a 2) _^ R3 = V ((X3-X) ^A 2+ (Y3-Y) ^A 2), calculate the latitude and longitude of the LORA to NB_IOT gateway ( X, Y) [0040] Further, in step S2, the positioning center turns to three LORAs, respectively.

The NB_I0T gateway sends out the L0RATM data packet, calculates the transmission time T of the L0RATM data packet, and calculates the relationship between the transmission time T of the LO RATM data packet and the distance R by the formula R = TxC, and calculates the distance between the positioning center and the three LORA to NB_IOT gateways. The distance, where C is the electromagnetic wave transmission speed, is a known constant.

[0041] Further, in step S2, the transmission time T of the LORATM data packet is equal to the sum of the preamble time and the effective load time, where the preamble time Tpreamble passes the relationship formula Tpreamble = (Npreamble + 4.25) xTs

Calculate that the payload time Tpayload is equal to the symbol period Ts times the number of payload symbols payloadSymN b. Among them, Npreamble

Represents the preamble length that has been set. Its value comes from the RegPreambleMsb and RegPreamble Lsb bits on the register. Ts represents the symbol period. It is calculated based on the relationship between the symbol rate Rs and the symbol period Ts Ts = 1 / Rs. Among them, the symbol rate Rs is calculated by the relationship with the signal bandwidth BW = Rsx (l + a). Among them, a represents the roll-off coefficient of the low-pass filter, and BW represents the signal bandwidth, both of which are known constants. The number of payload symbols payloadSymNb is calculated by calculating the formula payloadSymNb = 8 + max [cell ((8PL-4SF + 28 + 16-20H) / (4x (SF-2DE))) x (CR + 4), 0]. Among them, PL represents the number of bytes of the payload, when the header is used, H = 0; when there is no header, H = 1; when the LowDataRateOptimize bit is set to 1, DE = 1; otherwise, DE = 0; CR represents the encoding rate, which is The value range is 1-4; SF represents the spreading factor, CR represents the coding rate, and both are known constants.

[0042] Further, in step S3, the center of latitude and longitude of the 3 NB_IOT gateways are used as the center of the circle, respectively, and the positioning center and the 3 LORAs are turned.

The distance between the NB_IOT gateways is a circle with a radius to obtain 3 circles, and the intersection of the 3 circles is the position of the positioning center;

Location relationship between NB_IOT gateways Ri = V ((xi-x) ^A 2+ (yi-y) ^A 2) Rj = V ((xj-x) ^A 2+ (yj-y) ^A 2)

Calculate the latitude and longitude (x, y) of the fixtures to be positioned, where (xi, yi) (xj, yj) (xk, yk) is the latitude and longitude information of the three LORA to NB_IOT gateways, respectively Ri, Rj, and Rk The distance between the positioning center and the three LORA to NB_IOT gateways. [0043] 5 In the prior art, the position of the lamp is located through the GPRS technology, but it needs to install a GP on each lamp.

The S positioning module has a very high cost and is easily limited by the strength of the signal. In a place where the network signal is weak, the position of the lamp cannot be located using the GPRS positioning technology. The positioning algorithm provided by the present invention does not need to install a GPS positioning module, which greatly saves costs. It first obtains the latitude and longitude information of the LORA to NB_IOT gateway through a base station based on the NB_IOT cellular network, and then uses the relative position of the LORA to NB_IOT gateway according to the relevant algorithm. Calculate the latitude and longitude of the lamp to be positioned. This method is not easily limited by the strength of the signal, and it is also applicable to the place where the signal is poor.

[0044] For a luminaire provided with a NB_IOT terminal or a PLC cable anti-theft terminal, the positioning method can be selected from the above positioning methods, or the NB_IOT terminal or PLC cable anti-theft terminal can be located directly from the base station in one step, thereby locating the required lamp position. . Preferably, since the network signal where the NB_IOT terminal or the PLC cable anti-theft terminal is located is strong, the positioning method of the NB_IOT terminal or the PLC cable anti-theft terminal where the lamp is located can be selected directly from the base station in one step.

The beneficial effects of the invention

Beneficial effect

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] (1) Quick and intelligent upgrades of common outdoor lamps can be performed without special requirements on the lamps, such as no specific interface. The intelligent lamp cover of the present invention can be installed in a low position, and the signal will not be affected. High sex.

[0047] (2) The present invention uses a smart lamp cover instead of a traditional smart lamp, and the smart lamp cover is directly mounted on the lamp.

There is no need to replace lamps, which greatly saves installation costs.

[0048] (3) The present invention uses a method for determining

The NB_IOT cellular network base station positioning method for NB_IOT gateway location and the LORA wireless positioning method for determining the position of lamps and lanterns determine the position of lamps and lanterns through hierarchical positioning. Compared with the traditional GPRS positioning method, the present invention effectively solves the problem of poor signals in remote locations. Can not determine the position of the lamp through GPRS

[0049] (4) The intelligent management system and method for urban lighting provided by the present invention can effectively upgrade the lamps intelligently. The intelligently upgraded lamps include but are not limited to the following functions: remote lamp switch control, remote lamp status query, anti-theft Monitoring, graphic interface management of lamps, multiple lamp control modes and street light rings Environmental information collection.

Brief description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a general block diagram of a system of the present invention.

2 is a structural diagram of a remote cloud server according to the present invention.

[0052] FIG. 3 is a functional block diagram of an urban area controller of the present application.

4 is a perspective view of a smart lamp cover of the present application.

5 is a top view of a smart lamp cover of the present application.

[0055] FIG. 6 is a schematic diagram of a connection between a smart lamp cover and a lamp of the present application.

7 is a schematic structural diagram of a power supply circuit of a smart lamp cover of the present application.

8 is a schematic block diagram of a PLC cable anti-theft terminal circuit of the present application.

9 is a flowchart of a positioning algorithm of the present application.

[0059] FIG. 10 is a schematic diagram of positioning a LORA to NB_IOT gateway in this application.

11 is a schematic diagram of three-point positioning of the present application.

12 is a schematic diagram of a positioning lamp of the present application.

The best embodiment for carrying out the invention

Best Mode of the Invention

[0062] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Invention Examples

Examples

[0063] As shown in FIG. 1, an intelligent management system for urban lighting based on multi-network integration includes a remote cloud server, a lamp, and a smart lamp cover installed on the lamp and used to monitor the operation of the lamp. The smart lamp cover is installed in the smart lamp cover. Have NB_IOT terminal, or install PLC cable anti-theft terminal, or install LORA terminal, or install NB_IOT terminal and PLC cable anti-theft terminal, or install LORA terminal and PLC cable anti-theft terminal, according to the actual situation of the project site, flexible use of different The terminals are combined to achieve cost and performance optimization. The NB_IOT terminal or LORA terminal is connected to the internal circuit of the lamp for monitoring the lamp The status of the PLC cable anti-theft terminal is connected to the cable where the lamp is located, and is used to monitor the status of the cable where the lamp is located; the remote cloud server implements network communication with the NB_IOT terminal through the NB_IOT wide area network, or transfers to the NB_IOT gateway through the NB_IOT wide area network and power carrier Realize network communication with PLC cable anti-theft terminal or network communication with LORA terminal through NB_IOT WAN and LORA to NB_IOT gateway, remotely collect and manage lamps, and provide geographic information of lamps.

[0064] As shown in FIG. 2, the remote cloud server includes a general server and at least one urban area controller, the general server implements mutual signal transmission with the urban area controller through Ethernet, and the urban area controller uses NB_IOT The WAN and the NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway or base station in the area where it is located implement signal transmission, or the base station and the NB_IO OT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway in the area where the signal is located Mutual transmission, or the mutual transmission of signals by power carrier to NB_IOT gateway and PLC cable anti-theft terminal, or the mutual transmission of signals by LORA to NB_I OT gateway and LORA terminal, so as to monitor the operation of lamps and cables.

[0065] As shown in FIG. 3, the urban area controller includes an MCU control module, a wireless transceiver module, a Flash data storage module circuit, and a network data conversion module circuit. The MCU control module is separately connected to the wireless transceiver module and the Flash data storage. The module circuit is connected to the circuit of the network data conversion module and is used to handle network data processing and circuit control. The wireless transceiver module is mainly responsible for wirelessly receiving or sending network data of the MCU control module. The network data conversion module circuit is mainly responsible for Receiving and sending Ethernet data, and transmitting the Ethernet data to the MCU control module or sending the data of the MCU control module through the Ethernet; the Flash data storage module circuit is mainly responsible for storing the lamps related to the query by the urban area controller Information and related maintenance logs.

[0066] The urban area controller further includes an AC switching power supply, a filter circuit, a voltage conversion module, an input isolation transformer, and an output isolation transformer, the AC switching power supply, the filter circuit, and the voltage conversion module are sequentially connected, and the voltage conversion module The wireless transceiver module, the MCU control module and the Flash data storage module circuit are respectively connected, and the AC switching power supply is connected to an external circuit for converting a high voltage of 100 to 240V into a low voltage of 5V, as a first-level power supply source for an urban area controller. It is used by filter circuits and voltage conversion modules, which convert 5V voltage to 3.3V voltage. As a second-level power supply source for urban area controllers, they are provided to wireless transceiver modules, MCU control modules, and Flash data storage modules. Circuit use; the input isolation transformer and output isolation transformer are separately from network data Conversion module circuit connection is mainly responsible for the electrical isolation of Ethernet communication.

[0067] As shown in FIGS. 4 to 5, an antenna 1 is installed around the inner edge of the smart lamp cover, and the antenna and the NB_IOT terminal in the smart lamp cover, or a PLC cable anti-theft terminal, or a LORA terminal, or an NB_IOT terminal and The PLC cable anti-theft terminal, or the signal connection between the LORA terminal and the PLC cable anti-theft terminal is used to enhance the sending and receiving signals of the terminal in the smart lamp cover, and the inner edge of the smart lamp cover is provided with a wire slot for installing an antenna. The smart lamp cover includes a receiving slot for installing a NB_IOT terminal, or a PLC cable anti-theft terminal, or a LORA terminal, or a NB_IOT terminal and a PLC cable anti-theft terminal, or a LORA terminal and a PLC cable anti-theft terminal. 2

[0068] In this embodiment, the smart lamp cover adopts the integrated design of the antenna and the lamp cover, and the antenna 1 is integrated into the edge of the smart lamp cover. This wireless antenna installation method has the beneficial effects of simple, convenient and easy installation. . A signal amplifier is designed on the signal source circuit in the intelligent lamp cover, which is beneficial to further enhance the signal gain effect. With regard to the selection of signal frequency bands, the selection of medium and low-frequency signals with strong diffraction capability is less than 1GHz, which is beneficial to achieve the signal gain effect. The flexible antenna is used in the antenna design. The flexible antenna can be flexibly bent, which can facilitate the antenna Go around the edge of the lamp cover to enhance the signal receiving area. In terms of the structural design of the lamp cover, the wire groove for placing the antenna is made of a non-metal material that facilitates signal penetration or a dark hole is provided in the wire groove, which can avoid the blocking of the signal by the obstruction as much as possible, which is more effective than traditional wireless signals. Improve signal penetration.

[0069] As shown in FIG. 6, the intelligent lamp cover is connected to the lamp through the live wire and the neutral wire to implement control of the lamp switch and anti-theft monitoring.

[0070] As shown in FIG. 7, the power supply circuit of the smart lamp cover includes mains power and backup batteries. The smart lamp cover is provided with an electronic switch module, and the electronic switch module is connected to the low-power circuit in the smart lamp cover. And the electronic switch module is selectively connected to the mains and the backup battery, and is powered by the mains or the backup battery for the low power consumption circuit in the smart lamp cover, and a switch is provided between the electronic switch module and the mains connection The low-power circuit is connected to the antenna in the smart lamp cover and other lines, and supplies power to the antenna and other lines in the smart lamp cover, respectively.

[0071] The smart lamp cover is further provided with a door magnetic sensor switch for communicating with a remote control terminal to implement a door magnetic alarm function. The door magnetic sensor switch is connected to a low power circuit and passes through the low power circuit. Achieve power. When the smart light cover is opened illegally, the door sensor switch will immediately transmit the alarm information to the remote cloud service Device, and then notify the staff to achieve the anti-theft function.

[0072] As shown in FIG. 8, the PLC cable anti-theft terminal includes a PLC transmitter and a PLC receiver, the PLC receiver communicates with a remote service terminal network, and the PLC transmitter periodically transmits data to the PLC receiver through a cable. Packet, the PLC receiver selects whether to transmit a signal to a remote service terminal to implement cable anti-theft monitoring according to whether a data packet from the PLC transmitter is received.

[0073] The circuit module of the PLC transmitter includes: a power supply battery, an MCU control circuit, and a power carrier transmission module. The MCU control circuit of the PLC transmitter is connected to a power carrier transmission module and realizes mutual signal transmission, and the power supply battery supplies power to the MCU control circuit and the power carrier transmission module.

[0074] The circuit module of the PLC receiver includes: a power supply battery, an MCU control circuit, a power carrier receiving module, and a NB_IOT wireless transceiver module. The power carrier receiving module communicates with the PLC transmitter power carrier transmitting module through a cable, and implements signal transmission and signal reception through the cable. The NB_IOT wireless transceiver module and the remote cloud server implement network communication through the _NB- IOT wide area network.

[0075] The data packet is a heartbeat signal packet, and the PLC transmitter periodically transmits the heartbeat signal packet to the PLC receiver through a cable. If the PLC receiver receives the heartbeat signal packet within a set time, it indicates that the cable line is normal, If the PLC receiver does not receive a heartbeat signal packet within a set time, it indicates that the cable line is abnormal, and then transmits an alarm signal to a remote cloud server through the NB_IOT wireless transceiver module.

[0076] As shown in FIG. 9, a positioning method applicable to the above-mentioned multi-network integration-based urban lighting intelligent management system, the system includes a remote cloud server, a luminaire, and intelligently installed on the luminaire and used to monitor the operation of the luminaire. The lamp cover, the LORA terminal installed in the smart lamp cover, and the LORA to NB_IOT gateway for converting the LORA network to the NB_IO T network for network communication. The positioning method of the lamp includes the following positioning steps:

[0077] S1: Use the lamps to be positioned as the positioning center, and select LORA switches around 3 positioning centers.

NB_IOT gateway, to obtain the latitude and longitude information of the three selected LORA to NB_IOT gateways;

[0078] S2: Calculate the distances between the positioning center and the three LORA to NB_IOT gateways respectively;

[0079] S3: Calculate the latitude and longitude of the positioning center according to the latitude and longitude information of the three LORA to NB_IOT gateways and the three distance information calculated in step S2, so as to determine the position of the required positioning lamp;

[0080] Wherein, in step S1, the method for obtaining the latitude and longitude information of the LORA to NB_IOT gateway is:

[0081] S1-1: Gateway initialization, LORA to NB_IOT gateway searches for information of nearby base stations by broadcast The LORA to NB_IOT gateway selects whether to continue to send the request signal to the nearby base stations again according to whether the feedback information is received. If the feedback information is received, calculate the time when the feedback information is received, and send the request information to the next base station until the time when the three base station response signals are received;

[0082] S1-2: Calculate the distances between the LORA-to-NB_IOT gateway and the three base stations, respectively;

[0083] S1-3: Calculate the latitude and longitude of the LORA to NB_IOT gateway according to the distance from the LORA to NB_IOT gateway calculated in step S1-2, and the latitude and longitude information of the three base stations, respectively.

[0084] As shown in FIG. 10, in step S1-1, the LORA to NB_IOT gateway sends multiple request signals to nearby base stations respectively through the NB_IOT wide area network, and the LORA to NB_IOT gateway selects _three of the base stations according to the received base station response signal. The three base stations selected are base station 1, base station 2, and base station 3. The latitude and longitude of base station 1 is (XI, Y1); the latitude and longitude of base station 2 is (X2, Y2); the latitude and longitude of base station 3 is (X3, Y3); LORA The average time T1, T2, and T3 of the NB_IOT gateway receiving the response signals from the base station 1, base station 2, and base station 3.

[0085] In step S1-2, according to the distance and time calculation formula R = TxC, the LORA revolutions are calculated respectively.

Distance between NB_IOT gateway and base station R1, LORA turn

The distance R2 between the NB_IOT gateway and the base station 2 and the distance R3 between the LORA to NB_IOT gateway and the base station 3; where C represents the electromagnetic wave transmission speed, which is a known constant, and T represents the LORA to NB_IOT gateway received the base station 1, base station 2 The average times T1, T2, and T3 of the response signals with the base station 3 are calculated by step S1-1.

[0086] As shown in FIG. 11, the operation steps of step S1-3 include: using the longitude and latitude of 3 base stations as the center of the circle, and using the distance between the L ORA to NB_IOT gateway and the 3 base stations as the radius to make 3 circles. Circle, the intersection of the three circles is the location of the LORA to NB_IOT gateway; according to the calculation formula of the 3 base stations and the LORA to NB_IOT gateway, R1 = V ((X1-X) ^A 2+ (Y1-Y) ^A 2 ), R2 = V ((X2-X) ^A 2+ (Y2-Y) ^a 2) _^

R3 = V ((X3-X) ^A 2+ (Y3-Y) ^A 2), calculate the latitude and longitude (X, Y) of the LORA to NB_IOT gateway

[0087] In step S2, the positioning center sends LORATM data packets to the three LORA to NB_IOT gateways respectively, calculates the transmission time T of the LORATM data packets, and uses the formula R = TxC for the relationship between the transmission time T of the LORATM data packets and the distance R, respectively. Calculate the distance between the positioning center and the 3 LORA to NB_IOT gateways Where, C represents the electromagnetic wave transmission speed, which is a known constant.

[0088] In step S2, the transmission time T of the LORATM data packet is equal to the sum of the preamble time and the payload time, where the preamble time Tpreamble is calculated by a relationship formula Tpreamble = (Npreamble + 4.25) xTs, and the payload time Tpayload is equal to the symbol The period Ts is multiplied by the number of payload symbols payloadSymNb. Among them, Npreamble

Represents the preamble length that has been set. Its value comes from the RegPreambleMsb and RegPreamble Lsb bits on the register. Ts represents the symbol period. It is calculated based on the relationship between the symbol rate Rs and the symbol period Ts Ts = 1 / Rs. Among them, the symbol rate Rs is calculated by the relationship with the signal bandwidth BW = Rsx (l + a). Among them, a represents the roll-off coefficient of the low-pass filter, and BW represents the signal bandwidth, both of which are known constants. The number of payload symbols payloadSymNb is calculated by calculating the formula payloadSymNb = 8 + max [cell ((8PL-4SF + 28 + 16-20H) / (4x (SF-2DE))) x (CR + 4), 0]. Among them, PL indicates the number of bytes of the payload, when the header is used, H = 0; when there is no header, H = 1; when the LowDataRateOptimize bit is set to 1, DE = 1; otherwise, DE = 0; CR indicates the encoding rate, which is The value range is 1-4; SF represents the spreading factor, CR represents the coding rate, and both are known constants.

[0089] As shown in FIG. 12, in step S3, the circles are centered on the latitude and longitude of the three LORA to NB_IOT gateways, and the distances between the positioning center and the three LORA to NB_IOT gateways are used as the radius to make three circles. The intersection of the three circles is the position of the positioning center; the positional relationship between the positioning center and the three LORA to NB_IOT gateways is 111 = (\: ^ 2+ (: ^; ^ 2), Rj = V ( (xj-x) ^ 2 + (yj-y) ^ 2)

, Rk = V ((xk-x) ^A 2+ (yk-y) ^A 2), calculate the latitude and longitude (x, y) of the lamp to be positioned, where (xi, yi), (xj, yj) , (Xk, yk) are the latitude and longitude information of the three LORA to NB_IOT gateways respectively, and Ri, Rj, and Rk are the distances between the positioning center and the three LORA to NB_IOT gateways, respectively.

Claims

Claim

[Claim 1] An intelligent management system for urban lighting based on multi-network integration, comprising a remote cloud server, a luminaire, and a smart lamp cover respectively installed on the luminaire and used to monitor the operation of the luminaire, and the smart lamp cover is installed inside NB_IOT terminal, or PLC cable anti-theft terminal installed, or LORA terminal installed, or NB_IOT terminal and PLC cable anti-theft terminal installed, or LORA terminal and PLC cable anti-theft terminal installed, said NB_IOT terminal or LO RA terminal and lamps An internal circuit connection is used to monitor the status of the lamp, and the PLC cable anti-theft terminal is connected to the cable where the lamp is located to monitor the status of the cable where the lamp is located; the remote cloud server implements network communication with the NB_IOT terminal through the NB_IOT wide area network or through NB_IOT WAN and power carrier to NB_IOT gateway and PLC cable anti-theft terminal for network communication, or NB_IOT WAN and LORA to NB_IOT gateway for network communication with LOR A terminal, remotely collect and manage lamps and provide geographic information of lamps

[Claim 2] The intelligent management system for urban lighting based on multi-network fusion according to claim 1, characterized in that the remote cloud server includes a general server and at least one urban area controller, and the general server is through Ethernet Mutual signal transmission with the urban area controller, which implements mutual signal transmission with the NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway or base station in the area through the NB_IOT wide area network. NB_IOT terminal or power carrier to NB_IOT gateway or LORA to NB_IOT gateway to realize mutual signal transmission, or power carrier to NB_IOT gateway and PLC cable anti-theft terminal to realize mutual signal transmission, or LORA to NB_IOT gateway and LORA terminal to realize mutual signal transmission To monitor the operation of lamps and cables.

[Claim 3] The intelligent management system for urban lighting based on multi-network fusion according to claim 1, characterized in that an antenna is installed around the inner edge of the smart lamp cover, and the antenna and the NB_IOT terminal in the smart lamp cover Or a PLC cable anti-theft terminal, or a LORA terminal, or a NB_IO T terminal and a PLC cable anti-theft terminal, or a LORA terminal and a PLC cable anti-theft terminal for signal communication, used to enhance the sending and receiving signals of the terminal in the smart lamp cover, said intelligent The inner edge of the lamp cover is provided with a wire groove for installing an antenna.

[Claim 4] The intelligent management system for urban lighting based on multi-network fusion according to claim 1, characterized in that the intelligent lamp cover is provided with a terminal for installing NB_IOT, or a terminal for anti-theft of PLC cable, or a LORA Terminal, or install NB_IOT terminal and PLC cable anti-theft terminal, or install LORA terminal and PLC cable anti-theft terminal receiving slot.

[Claim 5] The intelligent management system for urban lighting based on multi-network fusion according to claim 1, characterized in that the power supply circuit of the smart lamp cover includes mains power and backup batteries, and the smart lamp cover is provided with An electronic switch module, which is connected to a low-power circuit in a smart lamp cover, and the electronic switch module is selectively connected to a mains and a backup battery, and the mains or the backup battery is a low-power circuit in the smart lamp cover. Power is provided by a power consumption circuit, and a switching power supply is provided between the electronic switch module and the mains, and the on / off of the mains is realized by opening and closing the switching power supply; the low power consumption circuit and the antenna in the smart lamp cover and Connect other lines, and supply power to the antenna and other lines in the smart lamp cover.

[Claim 6] The intelligent management system for urban lighting based on multi-network fusion according to claim 5, characterized in that the intelligent lamp cover is further provided with a door sensor for communicating with a remote control terminal to realize a door sensor alarm function. A sensor switch, the door magnetic sensor switch is connected to a low power consumption circuit, and realizes power supply through the low power consumption circuit.

[Claim 7] The intelligent management system for urban lighting based on multi-network fusion according to claim 1, characterized in that the PLC cable anti-theft terminal includes a PLC transmitter and a PLC receiver, and the PLC receiver and remote The service terminal communicates with the network, the PLC transmitter periodically transmits data packets to the PLC receiver through a cable, and the PLC receiver selects whether to transmit a signal to a remote service terminal to implement cable anti-theft monitoring according to whether the data packet of the PLC transmitter is received.

[Claim 8] A positioning method applicable to an intelligent management system for urban lighting based on multi-network fusion according to any one of claims 1 to 7, characterized in that the system includes a remote cloud server, lamps, and separately installed A smart lamp cover on a lamp and used to monitor the operation of the lamp, a LORA terminal installed in the smart lamp cover, and a LORA to NB_IOT gateway for converting the LORA network to the NB_IOT network for network communication, the positioning method of the lamp includes the following positioning Steps

S1: Use the fixtures to be positioned as the positioning center, and select the LORs around the 3 positioning centers. A to NB_IOT gateway, to obtain the latitude and longitude information of the three selected LORA to NB_IOT gateways;

S2: Calculate the distance between the positioning center and the three LORA to NB_IOT gateways respectively;

S3: Calculate the latitude and longitude of the positioning center according to the latitude and longitude information of the three LORA to NB_IOT gateways and the three distance information calculated in step S2, so as to determine the position of the required positioning fixture;

In step S1, the method for obtaining the latitude and longitude information of the LORA to NB_IOT gateway is:

Sl-1: LORA turn

The NB_IOT gateway sends multiple request signals to nearby base stations. The LORA to NB_IOT gateway selects three of the base stations according to the received base station response signals, obtains the latitude and longitude information of the selected base stations, and each base station sends a response to the LORA to NB_IOT gateway. Signal time

S1-2: Calculate the distances between the LORA-to-NB_IOT gateway and the three base stations respectively;

S1-3: Calculate the latitude and longitude of the LORA to NB_IOT gateway according to the distances between the LORA to NB_IOT gateway and the 3 base stations and the latitude and longitude information calculated in step S1-2.

[Claim 9] The positioning method for a city lighting intelligent management system based on multi-network fusion according to claim 8, characterized in that, in step S2, the positioning center sends LORATM data packets to three LORA to NB_IOT gateways respectively, and calculates The transmission time T of the LORATM data packet is calculated from the relationship between the transmission time T of the LORATM data packet and the distance R by the formula R = TxC, and the distances between the positioning center and the three LORA to NB_IOT gateways are calculated respectively, where C is the electromagnetic wave transmission speed , Is a known constant.

[Claim 10] The positioning method of an urban lighting intelligent management system based on multi-network fusion according to claim 8, characterized in that, in step S3, the latitude and longitude of the three LORA to NB_IOT gateways are used as the center of the circle, and the positioning center is The distance from the 3 LORA to NB_IOT gateways is a circle with a radius to obtain 3 circles, and the intersection of the 3 circles is the position of the positioning center; Location relationship between NB_IOT gateways Ri = V ((xi-x) ^A 2+ (yi-y) ^A 2)

Calculate the latitude and longitude (x, y) of the fixture to be located. Among them, (xi, yi), (xj, yj), (xk, yk) are the latitude and longitude information of the three LORA to NB_IOT gateways, Ri, Rj, and Rk. The distances between the positioning center and the three LORA to NB_IOT gateways.