CN210488775U - LoRa gateway and meter reading system - Google Patents
LoRa gateway and meter reading system Download PDFInfo
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- CN210488775U CN210488775U CN201921998307.XU CN201921998307U CN210488775U CN 210488775 U CN210488775 U CN 210488775U CN 201921998307 U CN201921998307 U CN 201921998307U CN 210488775 U CN210488775 U CN 210488775U
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Abstract
The application provides a loRa gateway and system of checking meter, this loRa gateway includes: first host system and second host system, first host system include first control unit, general meter reading module and remote communication module, and second host system includes second control unit and first loRa communication module, and first control unit is connected with general meter reading module, remote communication module and second control unit respectively, and the second control unit is connected with first loRa communication module. The loRa gateway in this application can copy and read the meter through loRa communication module and general meter reading module to by remote communication module data transmission who will copy and read to the server, be applicable to water, electricity, gas, hot many meters collection and copy, when gathering the blind area, only need increase the intermediate node that supports loRa, the loRa gateway can acquire the data of gathering the blind area interior meter through loRa communication module.
Description
Technical Field
The application relates to the technical field of meter reading, in particular to a LoRa gateway and a meter reading system.
Background
The existing LoRa gateway usually adopts LoRa communication technology and LoRaWan transmission protocol to combine, and adopts special gateway chip SX 1301. A star network topology is adopted between the gateway and the terminal, the gateway forwards LoRaWAN protocol data between the network server and the terminal, and the LoRaWAN data are respectively borne on LoRa radio frequency transmission and TCP/IP.
In water, electricity, gas, heat energy measurement trade, often need gather multiple table meter data simultaneously, and the table meter distribution condition is uncertain, can distribute very dispersedly occasionally, the applied environment is also very abominable, the blind spot of gathering can appear often, and the LoRaWAN agreement only supports star network structure, do not support nimble ad hoc network, when appearing gathering the blind area, only increase the LoRa gateway of SX1301 chip scheme, because the gateway of SX1301 chip scheme is the gateway solution that the SEMTECH company specially proposed to the thing networking, the scheme cost can greatly improve.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the present application is to provide an LoRa gateway and a meter reading system, so as to improve the above technical problem.
In a first aspect, an embodiment of the present application provides an LoRa gateway, including: first host system and second host system, first host system includes first the control unit, general meter reading module and remote communication module, second host system includes second the control unit and first loRa communication module, first the control unit respectively with general meter reading module remote communication module with the second the control unit is connected, the second the control unit with first loRa communication module is connected, wherein, the second the control unit is used for receiving the first data of checking meter that first loRa communication module acquireed, and will first data of checking meter send to first the control unit, first the control unit be used for with first data of checking meter with the second data of checking meter that general meter reading module acquireed passes through remote communication module sends to the server.
In the above scheme, the loRa gateway can acquire the loRa meter or other meter reading data that support the intermediate node upload of loRa communication mode through loRa communication module to and copy and read conventional meter through general meter reading module, make this loRa gateway can cover the reading of each meter in the system of checking meter, simultaneously, when gathering the blind area, only need increase the intermediate node that supports loRa, the loRa gateway can acquire the data of gathering the interior meter of blind area through loRa communication module, be applicable to water, electricity, gas, hot many meters collection and copy.
Optionally, the first LoRa communication module includes an LoRa chip, a radio frequency switch and a radio frequency antenna, a radio frequency signal transmitting pin of the LoRa chip is connected to a first logic control pin of the radio frequency switch, a radio frequency signal receiving pin of the LoRa chip is connected to a second logic control pin of the radio frequency switch, and an antenna pin of the radio frequency switch is connected to the radio frequency antenna; an antenna pin of the radio frequency switch can be switched to be conducted with the first logic control pin or the second logic control pin.
Optionally, the LoRa chip is an SX1278 chip. The SX1278 chip has the advantage of low cost, and can greatly reduce the production cost of the LoRa communication module.
Optionally, the first control unit is connected to the second control unit through an interface module, and the interface module is configured to perform level conversion, so that levels of the first control unit and the second control unit are matched.
Optionally, the interface module further includes an electrical connection socket, and the first main control module and the second main control module are connected in a pluggable manner through the electrical connection socket. According to actual needs, the second main control module can be pulled out of the electric connection seat, only the normal operation of the first main control module is kept, and the power consumption of the gateway can be further reduced.
Optionally, the LoRa gateway further includes a first power module and a second power module, wherein the first power module is respectively connected with the first control unit, the general meter reading module and the second power module, the second power module is connected with the second control unit, and the second power module is used for converting the power voltage output by the first power module into a voltage matched with the working voltage of the second control unit.
Optionally, the LoRa gateway further includes a display module, the display module with the first control unit is connected, the display module includes display screen and/or pilot lamp, the pilot lamp is used for instructing the running state of LoRa gateway, the pilot lamp includes at least one in warning pilot lamp, running pilot lamp, the communication pilot lamp of going upward and the communication pilot lamp of down.
Optionally, the LoRa gateway further includes a key module, and the key module is connected to the first control unit.
Optionally, the universal meter reading module includes at least one communication interface of a power line carrier interface, an RS485 interface, an MBUS interface, and an infrared communication interface.
In a second aspect, an embodiment of the present application provides a meter reading system, where the meter reading system includes: the system comprises at least one meter, at least one intermediate node, at least one LoRa gateway and a server, wherein the intermediate node comprises a third control unit, a second LoRa communication module and a power supply module, and the second LoRa communication module and the power supply module are connected with the third control unit; the intermediate node obtains meter reading data sent by a meter or other intermediate nodes through a second LoRa communication module, and forwards the meter reading data to the LoRa gateway, and the LoRa gateway sends the meter reading data to the server through a remote communication module.
In the meter reading system, the LoRa gateway, the meter and the intermediate node can form network structures such as star type, tree type and mesh type, and the formed network topology structure has better expansibility compared with a star network structure of a traditional data gateway, and can be more suitable for reading water, electricity, gas and heat meters under a complex application environment. And moreover, a special data gateway does not need to be configured in the acquisition blind area, and only an intermediate node with lower cost needs to be added.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an LoRa gateway provided in an embodiment of the present application;
fig. 2 is a schematic meter reading diagram of an LoRa gateway provided in the embodiment of the present application;
fig. 3 is another schematic structural diagram of an LoRa gateway according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an LoRa communication module according to an embodiment of the present disclosure;
fig. 5 is a specific circuit diagram of an LoRa communication module according to an embodiment of the present disclosure;
fig. 6 is a specific circuit diagram of a second control unit according to an embodiment of the present application;
fig. 7 is a specific circuit diagram of a second power module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a meter reading system provided in an embodiment of the present application;
fig. 9 is a network topology diagram of a meter reading system provided in the embodiment of the present application.
Icon: 10-a first master control module; 20-a second master control module; 101-a first control unit; 102-a telecommunications module; 103-a universal meter reading module; 201-a second control unit; 202-LoRa communication module; 203-an interface module; 104-local upgrade module; 105-a display module; 106-key module; 107-a first power supply module; 204-conventional functional module; 205-a second power supply module; 300-meter; 301-intermediate nodes; 302-LoRa gateway; 303-server.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In order to solve the problem that the existing LoRa gateway cannot flexibly and automatically establish a network and cannot adapt to multi-meter centralized meter reading in the water, electricity, gas and heat energy metering industry, the embodiment of the application provides the LoRa gateway. Referring to fig. 1 and 2, the LoRa gateway includes: first master control module 10 and second master control module 20, first master control module 10 includes first control unit 101, general meter reading module 103 and remote communication module 102, and second master control module 20 includes second control unit 201 and loRa communication module 202, and first control unit 101 is connected with general meter reading module 103, remote communication module 102 and second control unit 201 respectively, and second control unit 201 is connected with loRa communication module 202.
In this embodiment, the first control unit 101 and the second control unit 201 are electrically connected through a UART serial port. The first control unit 101 can issue a data acquisition starting instruction to the second control unit 201 through the UART serial port, the second control unit 201 controls the LoRa communication module 202 to realize remote data acquisition on each water meter, electricity meter, gas meter and heat meter based on the instruction, and after the meter reading data of the meter is acquired, the meter reading data is forwarded to the first control unit 101 through protocol conversion; the first control unit 101 receives meter reading data sent by the second control unit 201 through a UART serial port, and meanwhile, the first control unit 101 reads a meter by using the universal meter reading module 103, records and sorts the meter reading data obtained by the LoRa communication module 202 and the universal meter reading module 103, and uploads the data to the server through the remote communication module 102. The general meter reading module reads the meters through the conventional communication modes of the water meters, the electricity meters, the gas meters and the heat meters.
Because the LoRa has the long-distance transmission characteristic, the distance of transmission is longer than that of other wireless modes under the same power consumption condition, so that the LoRa gateway can read the LoRa meter in a larger range, and simultaneously the LoRa gateway can also support wireless LoRa relay, and relay forwarding is carried out on the meter reading data in a blind area by an intermediate node with a LoRa communication module, thereby greatly reducing the acquisition blind area; furthermore, in the whole meter reading system, a great part of the meters currently used by a user is not the LoRa meters, and the wireless meter reading of the LoRa is not supported.
Further, the first control unit 101 may also issue a remote control instruction to the second control unit 201 through a UART serial port.
Referring to fig. 3, the first control unit 101 and the second control unit 201 are connected through an interface module 203, the interface module 203 may be configured to implement level conversion between the control units, so that levels of the first control unit and the second control unit are matched, and the interface module may be disposed in the first main control module or the second main control module. Optionally, the interface module 203 further includes an electrical connection socket, and the first main control module 10 and the second main control module 20 are connected in a pluggable manner through the electrical connection socket. After the second main control module is inserted into the electrical connection socket, the first main control module 10 and the second main control module 20 in the LoRa gateway will work simultaneously, and the first main control module 10 has independent working capability, and after the second main control module 20 is pulled out from the electrical connection socket, namely, disconnected from the first main control module 10, the gateway can still realize general meter reading and data uploading through the general meter reading module 103 and the remote communication module 102 in the first main control module 10, so that the normal work of the gateway is not affected. In practical application, whether the second main control module is inserted or pulled out can be determined according to the actual needs of a meter reading area, and when the second main control module is not needed to be used, the power consumption of the gateway can be reduced by pulling out the second main control module.
In fig. 3, the first main control module 10 further includes a local upgrade module 104, a display module 105, a key module 106, and a first power module 107, where the local upgrade module 104, the display module 105, the key module 106, and the first power module 107 are all connected to the first control unit 101. In the first main control module 10, the remote communication module 102 is a communication interface between the LoRa gateway and the server, and the remote communication module 102 may adopt any one of an ethernet module, a GSM module, a GPRS module, a 4G communication module, or a 5G communication module; the universal meter reading module 103 comprises communication interfaces of common water, electricity, gas and heat meters, including but not limited to at least one of a power line carrier interface, an RS485 interface, an MBUS interface and an infrared communication interface; the local upgrade module 104 is provided with an upgrade interface, the upgrade interface is electrically connected with the first control unit 101, the upgrade interface includes but is not limited to a USB interface, an RS485 interface and an RS232 interface, and the upgrade interface can modify and upgrade a program preset in the LoRa gateway; the first power module 107 is respectively connected with the first control unit 101 and the universal meter reading module 103, the first power module 107 is used for converting a 220V alternating current power supply into a direct current power supply required by each functional module, and the output power supply mainly comprises: 5V, 12V, 24V and 36V.
The display module 105 includes a display screen, which may be an LCD screen, and an indicator light. The pilot lamp is used for showing the running state of loRa gateway in real time, and the pilot lamp contains at least one in warning indicator lamp, operation indicator lamp, upstream communication pilot lamp and the downstream communication pilot lamp. Human-computer interaction can be realized through the display screen and the key module.
In fig. 3, the second main control module 20 further includes a normal function module 204 and a second power module 205, and both the normal function module 204 and the second power module 205 are connected to the second control unit 201. The second power module 205 is connected to the first power module 107, and the second power module 205 is configured to convert 12VDC output by the first power module 107 into 3.3VDC to provide power for the second main control module; conventional functional modules 204 include, but are not limited to: debugging download interface, pilot lamp circuit and memory circuit etc..
The LoRa communication module 202 is electrically connected to the second control unit 201 through the SPI serial bus, so that data interaction with the second control unit 201 is possible. The remote data acquisition and remote control functions can be realized through the LoRa communication module 202, and the second main control module 20 is remotely upgraded. LoRa communication module 202 adopts LoRa spread spectrum modulation communication technique, develop based on the LoRa chip, the LoRa chip can adopt low cost's SX1278 chip, +20 dBm's adjustable power amplifier has been integrateed to this chip, connect radio frequency antenna through matching filter circuit, can obtain the sensitivity of receiving that exceeds-148 dBm, be fit for long distance transmission and require higher application scene to the reliability, the SPI interface has been drawn forth to the SX1278 chip, the second control unit passes through SPI and SX1278 chip communication, initialize the chip, configuration communication parameter, switch mode and send-receive data etc.. Of course, this embodiment is not limited to use of an SX1278 chip, and an SX1301 chip may be used to develop an LoRa communication module in practical applications.
The LoRa communication module 202 includes an LoRa chip, a radio frequency switch, and a radio frequency antenna, and the SX1278 chip is used as an example in this embodiment, and the LoRa communication module has a structure as shown in fig. 4, where a radio frequency signal transmitting pin of the LoRa chip is connected to a first logic control pin of the radio frequency switch, a radio frequency signal receiving pin of the LoRa chip is connected to a second logic control pin of the radio frequency switch, and an antenna pin of the radio frequency switch is connected to the radio frequency antenna. Because the LoRa chip SX1278 in the LoRa communication module is connected with the logic control pin of the radio frequency switch, the antenna pin can be conducted with the transmitting part circuit of the SX1278 in a transmitting state and conducted with the receiving part circuit of the SX1278 in a receiving state by configuring the internal register of the SX1278 in a program. Specifically, the LoRa communication module may be implemented with reference to the circuit diagram shown in fig. 5.
In fig. 5, the RFI _ LF pin is a radio frequency signal receiving pin of the LoRa chip, and is connected to the J3 pin of the radio frequency switch U400 through an input matched filter circuit composed of L400, C401, and C408. The PA _ BOOST pin is a radio frequency signal transmission pin of the LoRa chip, and is connected to a J2 pin of the radio frequency switch U400 through an output matching filter circuit composed of L401, L402, L403, L404, C409, C410, C413, C414, C415, C416 and C417, and a J1 pin of the radio frequency switch U400 is connected to the radio frequency antenna P400, wherein the model of the radio frequency switch U400 can be selected from AS179-92 LF. The level of pins of the radio frequency switch V1 and V2 can be controlled by controlling an internal register of the SX1278, when a radio frequency signal is sent, the radio frequency switch V1 is controlled to be at a low level, the V2 is at a high level, at the moment, J2 and J1 are conducted, the radio frequency switch is switched to a radio frequency transmitting circuit, and the radio frequency signal transmitted by the LoRa chip can be sent through a radio frequency antenna; after the transmission is finished, the radio frequency switch V1 is controlled to be at a high level, the V2 is controlled to be at a low level, at this time, J3 and J1 are conducted, and the radio frequency switch is switched to the radio frequency receiving circuit. And DIO0 and DIO1 interrupt output pins of the LoRa chip are connected to the second control unit, and interrupt generation such as receiving completion, sending completion, CAD detection completion and the like can be realized by controlling an SX1278 internal register. The SPI communication interface SCK, MISO, MOSI, the NSS pin of loRa chip are connected to the second control unit, realize the data transceiver between second control unit and the loRa communication module to the realization is to the data acquisition and the control of loRa meter.
Further, the second control unit 201 is composed of a Microcontroller (MCU) and a peripheral function module, and the second control unit can be specifically implemented with reference to the circuit diagram shown in fig. 6. In fig. 6, the MCU of the second control unit may adopt a main control chip with model number STM32F411RET6U, the crystal oscillator X200 is a 32.768KHZ crystal oscillator, and the peripheral function modules include: the debugging and downloading interface, the indicator light circuit, the storage circuit and the power decoupling circuit. The debugging download interface consists of a J200 six-core interface and pull-up resistors R201, R202 and R203; the indicating lamp circuit consists of R204, R205, R206 and R207, an LED200, an LED201, an LED202 and an LED203, wherein the LED200 and the LED201 are used for indicating the communication data receiving and sending state of the second main control module, the LED202 is used for indicating the wireless network state of the second main control module, and the LED202 is used for indicating whether the second main control module is powered on or not; the storage circuit is composed of a storage chip with the bit number U201 and the model of Huabang W25Q32FVSSIG, and the storage chip U201 is in data communication with the MCU through the SPI interface; the power supply decoupling circuit consists of capacitors C206, C207, C208, C209 and C210, and is placed nearby the MCU chip during PCB layout.
Further, the second power module 205 in the second master control module 20 may be implemented with reference to the circuit diagram shown in fig. 7. The second power supply module plays a role in DC-DC power supply conversion, is realized by a power supply chip with a pU300 model of MP2451, has the characteristics of wide input range, high-frequency switch, high-efficiency high-current output of 0.6A and the like, a feedback circuit is formed by pR302, pR303 and pC305 and used for adjusting output power supply voltage, a BUCK voltage reduction circuit is formed by the high-frequency switch, pD300, pL300, pC301 and pC302 in the pU300, and finally, 3.3V power supply voltage is output to the MCU in the second main control module.
The embodiment of this application provides a meter reading system based on above-mentioned LoRa gateway, as shown in fig. 8, this meter reading system includes: the meter reading system comprises at least one meter 300, at least one intermediate node 301, at least one LoRa gateway 302 and a server 303, wherein the meter 300 can upload meter reading data to the LoRa gateway 302 or upload the meter reading data to the LoRa gateway 302 through the intermediate node 301, the intermediate node 301 can forward the meter reading data uploaded by the meter 300 to the LoRa gateway in a LoRa communication mode after receiving the meter reading data, the LoRa gateway 302 receives the meter reading data forwarded by the intermediate node 301 through a LoRa communication module and sends the meter reading data to a second control unit, the second control unit sends the meter reading data to a first control unit through a UART serial port, and the first control unit uploads the meter reading data read by the LoRa gateway and the meter reading data forwarded by the intermediate node 301 to the server 303 through a remote communication module. The intermediate node 301 includes a third control unit, an LoRa communication module and a power supply module, both the LoRa communication module and the power supply module are connected to the third control unit, and the third control unit and the LoRa communication module in the intermediate node 301 may be specifically implemented with reference to fig. 5 and 6. The intermediate node 301 obtains the meter reading data of the meter 300 through the LoRa communication module, and forwards the meter reading data to the LoRa gateway 302 through the LoRa communication module.
In this embodiment, the intermediate node 301 supports route forwarding, and when an acquisition blind area of the LoRa gateway occurs, an expensive dedicated data gateway does not need to be added, and only low-cost intermediate nodes are added, and the meter in the blind area is copied and read and data forwarded by the intermediate nodes, so that the coverage of the LoRa gateway can be extended, and the system cost is reduced.
The utility model discloses the loRa gateway that introduces can realize wireless nimble ad hoc network based on SX1278 chip design to physical layer (PHY), medium access control layer (MAC), network layer (NWK) and application layer (APP) have been defined. The LoRa gateway can support communication with meters and intermediate nodes, so that the meter reading system can form star-shaped, tree-shaped and mesh-shaped network structures, and the network topology of the LoRa gateway is shown in fig. 9. The intermediate nodes have a routing forwarding function, so that interconnection and intercommunication can be realized, and compared with the star network structure of the traditional data gateway, the formed network topology structure has better expansibility and is more suitable for multi-meter centralized meter reading of water, electricity, gas and heat meters under complex application environments. In addition, an expensive special gateway chip SX1301 is not needed, a special data gateway is not needed to be configured in a blind area, and the cost of the meter reading system is reduced.
To sum up, the utility model discloses at least, following advantage has: (1) by adopting the LoRa spread spectrum communication technology, the data gateway is designed based on an SX1278 chip of Semtech company, an SX1301 expensive special gateway chip is not needed, and the production cost of the LoRa gateway is greatly reduced; (2) by adopting the wireless ad hoc network technology, when a blind area is acquired, a data gateway does not need to be added, only an intermediate node needs to be deployed, the intermediate node can read the meter in the blind area, the read data is forwarded to a second main control module of the LoRa gateway through a LoRa communication module, and then the LoRa gateway uploads the data to a server, so that the flexible ad hoc network with low cost is realized, the wireless ad hoc network has good flexibility and autonomy, and is suitable for application in the water, electricity, gas and heat energy metering industry; (3) the LoRa gateway is provided with a meter reading interface of a common water meter, an electricity meter, a gas meter and a heat meter, such as: power line carrier, MBUS, RS485, infrared etc. still are provided with the wireless remote communication module of loRa for this loRa gateway can realize that remote many meters are collected and are copied, and the mode of checking meter is various, can satisfy the demand of checking meter among the practical application.
It should be noted that the above-mentioned specific embodiments and circuit structures of the present embodiment are only examples and are not intended to limit the scope of the present application, so that those skilled in the art can quickly understand the present technical solution, and for those skilled in the art, the present application may have various modifications and changes, and any changes made in the hardware structure, device type, and network form of the LoRa gateway in the above-mentioned technical solution to achieve the same or similar technical effects of the present invention should be included in the scope of the present application. Similarly, any other connection modes or integrated design modes for achieving the same function at the connection point in the technical solution are also included in the protection scope of the present application.
Claims (10)
1. An LoRa gateway, comprising: first host system and second host system, first host system includes first the control unit, general meter reading module and remote communication module, second host system includes second the control unit and first loRa communication module, first the control unit respectively with general meter reading module remote communication module with the second the control unit is connected, the second the control unit with first loRa communication module is connected, wherein, the second the control unit is used for receiving the first data of checking meter that first loRa communication module acquireed, and will first data of checking meter send to first the control unit, first the control unit be used for with first data of checking meter with the second data of checking meter that general meter reading module acquireed passes through remote communication module sends to the server.
2. The LoRa gateway of claim 1, wherein the first LoRa communication module comprises a LoRa chip, a radio frequency switch, and a radio frequency antenna, wherein a radio frequency signal transmission pin of the LoRa chip is connected to a first logic control pin of the radio frequency switch, a radio frequency signal reception pin of the LoRa chip is connected to a second logic control pin of the radio frequency switch, and an antenna pin of the radio frequency switch is connected to the radio frequency antenna; an antenna pin of the radio frequency switch can be switched to be conducted with the first logic control pin or the second logic control pin.
3. The LoRa gateway of claim 2, wherein the LoRa chip is an SX1278 chip.
4. The LoRa gateway of claim 1, wherein the first control unit is connected to the second control unit through an interface module, and the interface module is configured to perform level conversion to match levels of the first control unit and the second control unit.
5. The LoRa gateway of claim 4, wherein the interface module further comprises an electrical connection socket through which the first master control module and the second master control module are pluggable.
6. The loRa gateway of claim 1, further comprising a first power module and a second power module, wherein the first power module is connected to the first control unit, the universal meter reading module and the second power module, the second power module is connected to the second control unit, and the second power module is configured to convert a power voltage output by the first power module into a voltage matched with a working voltage of the second control unit.
7. The LoRa gateway of claim 1, further comprising a display module, wherein the display module is connected to the first control unit, the display module includes a display screen and/or an indicator light, the indicator light is used to indicate an operation status of the LoRa gateway, and the indicator light includes at least one of an alarm indicator light, an operation indicator light, an uplink communication indicator light, and a downlink communication indicator light.
8. The LoRa gateway of claim 1, further comprising a key module, the key module being connected to the first control unit.
9. The LoRa gateway of claim 1, wherein the universal meter reading module comprises at least one communication interface selected from the group consisting of a power line carrier interface, an RS485 interface, an MBUS interface, and an infrared communication interface.
10. A meter reading system, comprising: at least one meter, at least one intermediate node, at least one LoRa gateway according to any one of claims 1 to 9, and a server, wherein the intermediate node comprises a third control unit, a second LoRa communication module, and a power module, and the second LoRa communication module and the power module are both connected to the third control unit; the intermediate node obtains meter reading data sent by a meter or other intermediate nodes through a second LoRa communication module, and forwards the meter reading data to the LoRa gateway, and the LoRa gateway sends the meter reading data to the server through a remote communication module.
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| CN201921998307.XU CN210488775U (en) | 2019-11-18 | 2019-11-18 | LoRa gateway and meter reading system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111615018A (en) * | 2020-05-12 | 2020-09-01 | 国网江苏省电力有限公司电力科学研究院 | Communication system and method based on ultra/extra-high voltage power transmission and transformation project |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111615018A (en) * | 2020-05-12 | 2020-09-01 | 国网江苏省电力有限公司电力科学研究院 | Communication system and method based on ultra/extra-high voltage power transmission and transformation project |
| CN111615018B (en) * | 2020-05-12 | 2023-02-28 | 国网江苏省电力有限公司电力科学研究院 | Communication system and method based on ultra/extra-high voltage power transmission and transformation project |
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