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CN-122027096-A - HPLC (high Performance liquid chromatography) and Lora dual-mode fusion communication repeater and communication method

CN122027096ACN 122027096 ACN122027096 ACN 122027096ACN-122027096-A

Abstract

The invention discloses an HPLC (high performance liquid chromatography) and Lora dual-mode fusion communication repeater and a communication method, relates to the technical field of power line carrier communication, and solves the technical problems that communication island nodes are easy to exist in the ammeter data acquisition process, and the data acquisition success rate and efficiency are affected. The device comprises an HPLC main control module, a Lora main control module and a communication module, wherein the HPLC main control module is used for carrying out HPLC communication and judging and switching a master node relay and a slave node relay, the Lora main control module is used for analyzing a Lora protocol to carry out Lora communication, a Lora data relay link is built between the master node relay and the slave node relay, and the communication module is used for communication connection between the slave node relay and an island node ammeter. According to the invention, the HPLC power line communication and the Lora wireless communication are integrated, so that the island node ammeter can be effectively covered, and the meter reading success rate and efficiency are improved.

Inventors

  • YANG WENQIN
  • XIE YUANZHI
  • JIANG TAIZHONG

Assignees

  • 深圳友讯达科技股份有限公司
  • 武汉友讯达科技有限公司

Dates

Publication Date
20260512
Application Date
20260121

Claims (10)

  1. 1. The dual-mode converged communication repeater is characterized by comprising a master node repeater and a slave node repeater, wherein the two working modes are used for carrying out dual-mode converged communication of HPLC and Lora, the repeaters comprise an HPLC main control module, a Lora main control module and a communication module, the HPLC main control module is connected with a power line, the Lora main control module and the communication module, the HPLC main control module is used for analyzing an HPLC protocol to carry out HPLC communication, identifying and processing a smart meter communication protocol, and carrying out judgment and switching of the master node repeater and the slave node repeater through correlation confirmation frame detection of a central coordinator CCO, the Lora main control module is used for analyzing the Lora protocol to carry out Lora communication, a Lora data relay link is built between the master node repeater and the slave node repeater, and the communication module is used for carrying out communication connection between the slave node repeater and an island node meter.
  2. 2. The dual-mode fusion communication repeater of HPLC and Lora according to claim 1, wherein the chip model of the HPLC main control module is FC1206, the chip model of the Lora main control module is ASR6601, the HPLC main control module and the Lora main control module communicate through UART protocol, and the communication module communicates with the HPLC main control module through RS-485 protocol.
  3. 3. The dual-mode converged communication repeater of claim 1, wherein the Lora main control module performs communication connection between the slave node repeater and the island node ammeter by encapsulating meter reading frames transmitted by the HPLC main control module into Lora physical layer frames.
  4. 4. The dual-mode converged communication repeater of claim 1, wherein the Lora main control module operates in the 433MHz band, and performs the Lora communication with a fixed transmission rate of 10kbps through the Lroa antenna.
  5. 5. The dual-mode converged communication repeater of claim 1, wherein the communication protocol of the smart meter identified and processed by the HPLC master control module is DL/T645 or DL/T698, and the central coordinator CCO and the communication module can identify and process the communication protocol of the smart meter DL/T645 or DL/T698.
  6. 6. A method of dual mode fusion communication of HPLC and Lora, operated by a dual mode fusion communication repeater of HPLC and Lora according to any one of claims 1 to 5, comprising the steps of: S100, powering up the relay, and carrying out self-adaptive judgment of the master node relay and the slave node relay; S200, the master node relay stores the ammeter address returned by the slave node relay, and sends an ammeter address inquiring instruction to the slave node relay through the Lora master control module at each set interval, and synchronously updates the stored ammeter address information; s300, a central coordinator CCO sends a meter reading frame to a main node repeater through an HPLC protocol, and an HPLC main control module of the main node repeater extracts a target ammeter address from the meter reading frame and retrieves a stored ammeter address; s400, if the target ammeter address is not matched with the stored ammeter address, the HPLC main control module of the main node repeater forwards the received meter reading frame in the local network through an HPLC protocol, otherwise, the HPLC main control module of the main node repeater transparently transmits the meter reading frame to the Lora main control module, and the Lora main control module sends the meter reading frame to the slave node repeater after receiving the meter reading frame; s500, after receiving the meter reading frame from the Lora main control module of the node repeater, the meter reading frame is transmitted to the HPLC main control module of the node repeater in a transparent mode, and then the meter reading frame is transmitted to a target ammeter through a communication module; and S600, the target ammeter transmits back a response frame containing electricity consumption data through the communication module, and the HPLC master control module of the slave node repeater transmits the response frame to the central coordinator CCO.
  7. 7. The method for dual-mode fusion communication between HPLC and Lora according to claim 6, wherein in step S100, the adaptive decision process of the master node repeater and the slave node repeater is: s110, starting a relay by default in a slave node relay mode after the relay is powered on, initializing a Lora master control module and a communication module by an HPLC master control module, and monitoring a beacon frame of a central coordinator CCO by analyzing an HPLC protocol; S120, the relay searches the ammeter address which is connected with the relay by itself through the communication module, and periodically sends an ammeter address connecting instruction which is connected with the relay from the node through the Lora main control module; s130, the repeater searches the ammeter address or acquires ammeter addresses connected with other repeaters through the Lora main control module, performs network access address configuration, and performs association request network access; And S140, if the repeater receives the association confirmation frame issued by the central coordinator CCO through an HPLC protocol, the repeater enters the network, the HPLC main control module judges that the repeater is in a master node repeater mode, and if the repeater does not receive the association confirmation frame issued by the central coordinator CCO, the repeater maintains the slave node repeater mode.
  8. 8. The method according to claim 6, wherein in step S200, the master node repeater stores the list of ammeter addresses returned from the slave node repeater in the RAM, and sends an instruction to the slave node repeater to inquire about the ammeter address from the slave node repeater through the Lora master control module every one hour, and synchronously updates the ammeter address information by adding or removing ammeter addresses.
  9. 9. The method of claim 6, wherein in step S400, if the Lora master control module sends the meter reading frame to the slave node repeater without receiving the slave node repeater response within 5 seconds, the HPLC master control module of the master node repeater resends the meter reading frame, and the total number of retries is 3, and if the total number of retries still fails, the communication is overtime and is not read.
  10. 10. The method for dual-mode fusion communication between HPLC and Lora according to claim 6, wherein in the step S600, the slave node HPLC master control module transmits the response frame to the central coordinator, specifically, the slave node HPLC master control module transmits the response frame to the Lora master control module, the Lora master control module transparently transmits the response frame to the master node repeater, and the master node repeater' S HPLC master control module receives the response frame and then uploads the response frame to the central coordinator CCO through the HPLC protocol.

Description

HPLC (high Performance liquid chromatography) and Lora dual-mode fusion communication repeater and communication method Technical Field The invention relates to the technical field of power line carrier communication, in particular to a dual-mode fusion communication repeater for HPLC and Lora and a communication method. Background The data acquisition of the ammeter is a typical application of the Internet of things, and the core of the data acquisition is to safely, accurately and efficiently collect the scattered intelligent ammeter data to a central platform through a stable and reliable communication network (wired/wireless) according to a standardized protocol, so as to provide a data base stone for the digital and intelligent management of energy. The data acquisition of the ammeter mainly relies on the following communication modes (1) single HPLC communication, namely data transmission is realized through a power line carrier, CCO (Central Coordinator, a central coordinator) and a core control node in the power line carrier communication network are responsible for managing equipment in the network, issuing instructions and converging data, and the data are taken as a master node to form an HPLC network with each ammeter (slave node). The core is that the power line is used as a natural transmission medium, no extra wiring is needed, but the signal is easily affected by power line noise, load change and building shielding, and communication interruption is easily caused in a long-distance or complex environment. (2) HPLC and HRF dual-mode communication, wherein part of devices adopt a mode of combining High-speed Power LINE CARRIER (High-speed Power line carrier communication) with HRF wireless communication (High-speed Radio Frequency, high-speed micropower wireless communication) which utilizes High-frequency radio waves to transmit data, and in a complex environment, the HRF can make up for the deficiency of wired communication, and when the Power line interference is large or a physical blind spot exists, the HRF can be used as an effective supplementary or standby channel), and when an HPLC signal is weak, the HRF is automatically switched to the HRF wireless transmission. The HRF works in a high-frequency band (such as 470-510 MHz), has higher transmission rate and weak penetration capability, and is easy to form 'island nodes' (nodes which cannot receive wired signals and wireless signals, such as ammeter shielded by dense buildings) under dense buildings or obstacle shielding scenes. (3) The traditional power line carrier repeater only supports the amplification and forwarding of the HPLC signal, and prolongs the transmission distance by enhancing the power line signal, but cannot solve the problem of complete interruption of the signal caused by building shielding, and has limited coverage (usually less than or equal to 300 meters). (4) The single Lora repeater only supports Lora (LongRange, long-distance radio, a low-power consumption wide area network communication technology, has the characteristics of long transmission distance, strong anti-interference capability and the like, and the working frequency band comprises 433MHz and the like), requires additional deployment of an independent wireless network, cannot be compatible with the existing HPLC power line network, and requires hardware modification of an ammeter to support the Lora module, and has higher cost. In the existing ammeter data acquisition scheme, communication island nodes are easy to exist, and the success rate and the efficiency of ammeter data acquisition are affected. In the dual-mode communication of HPLC and HRF, the attenuation of HRF wireless signals is serious under the shielding of dense buildings or obstacles, so that more than about 50% of island nodes cannot be covered, the meter reading success rate is low, a single Lora repeater needs to be independently networked, is incompatible with the existing HPLC power line network, and electric meter hardware needs to be modified (Lora modules are increased), thereby increasing the equipment cost and the deployment complexity. In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art: Communication island nodes are easy to exist in the ammeter data acquisition process, the coverage radius is short, and the success rate and the efficiency of ammeter data acquisition are affected. Disclosure of Invention The invention aims to provide an HPLC and Lora dual-mode fusion communication repeater and a communication method, which are used for solving the technical problems that communication island nodes are easy to exist in the ammeter data acquisition process in the prior art, the coverage radius is short, and the success rate and the efficiency of ammeter data acquisition are affected. The preferred technical solutions of the technical solutions provided by the present invention can produce a plu