CN208401842U - A kind of 230MHz LoRa built-in module meeting southern network mark standard - Google Patents

A kind of 230MHz LoRa built-in module meeting southern network mark standard Download PDF

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Publication number
CN208401842U
CN208401842U CN201821315823.3U CN201821315823U CN208401842U CN 208401842 U CN208401842 U CN 208401842U CN 201821315823 U CN201821315823 U CN 201821315823U CN 208401842 U CN208401842 U CN 208401842U
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China
Prior art keywords
module
radio
built
frequency
lora
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Expired - Fee Related
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CN201821315823.3U
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Chinese (zh)
Inventor
孙伟仁
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Hangzhou Rowan Mdt Infotech Ltd
Dingxin Information Technology Co Ltd
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Hangzhou Rowan Mdt Infotech Ltd
Dingxin Information Technology Co Ltd
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Priority to CN201821315823.3U priority Critical patent/CN208401842U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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Abstract

A kind of 230MHz LoRa built-in module meeting southern network mark standard, the LoRa built-in module is mounted on inside electric energy meter, including main control module, clock module, radio-frequency module, power module, indicator light, double 12 needle is in serial ports, capacitor, the radio-frequency module connects main control module by SPI, the main control module obtains data according to electric power pact from ammeter end by the serial ports of double 12 needle, and data are pressed into 230MHz LoRa agreement framing, radio-frequency module is sent to by SPI, and the radio-frequency module sends the data to gateway.Simultaneously when having a power failure, after the capacitance module electric discharge, master control borad will receive instruction and report power failure warning information.The utility model provides a kind of wireless built-in module of the LoRa being mounted in electric energy meter, using the LoRa wireless communication technique of 230MHz frequency range, the characteristics of realizing low-power consumption, long transmission distance.

Description

A kind of 230MHz LoRa built-in module meeting southern network mark standard
Technical field
The utility model belongs to wireless communication field, and in particular to built in a kind of 230MHz LoRa for meeting southern network mark standard Module.
Background technique
Use many gauge tables, such as electric energy meter, water meter, gas meter, flow meter in the modern life, meter reading method have manual metering, from Dynamic meter reading, wherein automatic data logging mode includes RS485 bus mode, low voltage power line carrier technical approach, GSM/GPRS/CDMA Communication mode, radio meter register etc., these modes more or less have shortcoming, for example RS485 bus mode meter reading has construction The problem of installation work amount is big, not convenient for safeguarding, is not suitable for extensive meter reading, low voltage power line carrier technical approach meter reading carrier wave letter Number vulnerable to interference, GSM/GPRS/CDMA communication mode meter reading hardware cost is higher, and needs to pay operator's expense, common nothing Line meter reading is usually then that channel is single, is easy to interfere with each other between the ammeter node between each area, and upload data are unstable, In smart meter reading industry, current radio meter register has accounted for quite heavy status, and existing radio meter register scheme all uses FSK modulation Technology, it is short that there are communication distances, communication relaying can not be completed to complicated scene, vulnerable to interference the problem of.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of wireless built-in moulds of the LoRa being mounted in electric energy meter Block, using the LoRa wireless communication technique of 230MHz frequency range, the characteristics of realizing low-power consumption, long transmission distance.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of 230MHz LoRa built-in module meeting southern network mark standard, the 230MHz LoRa built-in module are mounted on electricity Can be inside table, including main control module, clock module, radio-frequency module and power module, the radio-frequency module are 2, respectively on Row radio-frequency module and downlink radio frequency module, the upstream radio-frequency module pass through SPI with upstream radio-frequency module respectively and connect master control mould Data are pressed 230MHz LoRa agreement framing, send radio-frequency module, the radio-frequency module to by SPI by block, the main control module Send the data to gateway.
Preferably, 2 radio-frequency modules are connected with combiner, realize the function of uplink and downlink radio frequency combining output.
Preferably, the radio-frequency module is connected with radio-frequency antenna, the radio-frequency antenna perpendicular circuit board peace by combiner Dress.
Preferably, the radio-frequency module is SX1262 radio-frequency module.
Preferably, the main control module is also connected with temperature and humidity sensing module and clock module.
Preferably, the main control module is also connected with LED light.
Preferably, the main control module is also connected with 1.5F capacitor.
Preferably, the main control module is also connected with double 12 needle in serial ports.
Preferably, baseline layer and bus plane is separately provided in the circuit board of the 230MHz LoRa built-in module.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model discloses a kind of wireless built-in module being mounted on electric energy meter, and the wireless built-in module is adopted With 230MHz LoRa technology is given, solve at present 433MHz small wireless, WiFi, bluetooth and the ZigBee of mainstream on the market Etc. the problems such as transmission ranges are close, power consumption is big.
2, during built-in module design, in order to realize that maximum transmission range, radio-frequency antenna perpendicular circuit board are installed, Baseline layer and bus plane is separately provided in built-in module circuit board.The design of antenna can reduce antenna to other artificial circuit parts Radiation interference;Noise jamming caused by power and ground can be preferably minimized limit by individually designed bus plane and baseline layer Degree, to guarantee the quality of product.
3, the utility model installs Temperature Humidity Sensor, influence of the implementing monitoring temperature and humidity to electric energy meter.
4, whether the utility model installs 1.5F capacitor, can have a power failure to site environment and accomplish that one is supervised in real time well Control.
Detailed description of the invention
Fig. 1 is electric energy meter 230MHz LoRa built-in module schematic diagram;
Fig. 2 is the communication process schematic diagram of electric energy meter 230MHz LoRa built-in module.
Fig. 3 is the double 12 needle serial port schematic diagram of electric energy meter 230MHz LoRa built-in module.
Specific embodiment
The structure of the utility model and the course of work are described further with reference to the accompanying drawing.
A kind of 230MHz LoRa built-in module meeting southern network mark standard, LoRa built-in module are mounted on inside electric energy meter, packet Include main control module, clock module, radio-frequency module, power module, LED light, double 12 needle serial port and charge and discharge capacitance.It penetrates Frequency module is by SPI connection main control module, and main control module is by the serial ports of double 12 needle from ammeter end according to south net DL/T645 rule Data are about obtained, and data are pressed into 230MHz LoRa agreement framing, radio-frequency module is sent to by SPI, radio-frequency module is by data It is sent to gateway.Simultaneously when having a power failure, after capacitance module discharges, master control borad will receive instruction and report power failure warning information.
Radio-frequency module is 2 pieces of SX1262 radio-frequency modules, receives and dispatches each one piece of SX1262 module, and receiving and transmitting signal uses different frequencies Point realizes the performance of full duplex, and is finally realized an antenna by SMA interface using combiner while being received and dispatched Signal.
Radio-frequency module is connected with the spring radio-frequency antenna of 1.5dBi, radio-frequency antenna total length 35mm, diameter 0.6mm, standing wave Than little Yu 1.5, used by being directly welded at mainboard as built-in antenna.
During board design, noise jamming, the installation of radio-frequency antenna perpendicular circuit board, built-in module electricity are reduced to the greatest extent Baseline floor and bus plane is separately provided in road plate.
Main control module is also connected with temperature and humidity sensing module and clock module.
Main control module is also connected with LED light, and two lamps of total TXD and RXD, TXD lamp is when blinking red lamp, representation module Data are sent to power grid;For RXD lamp when green light flashes, representation module receives data from power grid.
In addition, main control module is further connected with the capacitor element of a 1.5F, when normal work, is in charge saturation state, once Power-off condition is encountered, capacitor starts to discharge, and module can be made to continue working 2 minutes, after discharge off, can give one electricity of main control module Ordinary mail number, main control module will return an outage information alarm by radio-frequency module.
South net multifunctional meter communication protocol DL/T645 is integrated in core processor and realizes acquisition electric energy meter data, is collected Electric energy meter data pass through during LoRaWAN protocols, data uploads onto the server again.
Such as Fig. 3: main control module is also connected with double 12 needle serial port, for being communicated with meter module, wherein 1,2 pins For VCC power interface, when ammeter operates in defined operating voltage range, output voltage range :+12V ± 1V (load current 0~125mA);3,4 pins are VSS power ground interface;5 pins are that RXD communication module gives electric energy meter transmission signal pins, it is desirable that Communication module output is open-drain mode, and normality is high-impedance state.Traffic rate 2400bps, communication module low level current drive energy Power >=2mA;7 pins are SET interface, and module setting is enabled;When low level, communication module can be set.Open-drain mode, normality are High-impedance state;8 pins are TXD interface, and electric energy meter signal of communication output pin, open-drain mode, normality is high-impedance state;9 pins are RST Interface resets output (low level is effective), and open-drain mode, normality is high-impedance state, can be used for resetting communication module, reset signal arteries and veins Width >=0.2s;10 pins are STA interface, and the correct module of address matching exports 0.2s high-impedance state when reception;Communication module is transmitted across Journey exports high-impedance state, and CPU determines quiescing relay when communication is sent in table.It is required that communication module output is open-drain mode, Normality is low level.Communication module low level current driving capability >=2mA;11 pins are EVENTOUT interface, electric energy list event State output, open-drain mode, normality are low level.When there is the generation of active reporting event, high-impedance state is exported, request inquiry is actively Uploaded state word;Low level is exported when active reporting status word is zero.Remaining is reserved pin.
Data transmission procedure such as Fig. 2: LoRa built-in module is as follows:
(1) data downstream process
LoRa built-in module receives the data of gateway, and data are decrypted, will read data carry out agreement judge with And protocol encapsulation, form standard DL 645 message of T, data directly pass through serial ports and send electric energy meter to.
(2) data uplink process
LoRa built-in module is communicated by serial data bus and electric energy meter, after reading the data on serial bus, into Row agreement determines and the data that arrive copy reading are by 230MHz LoRa agreement framing, main control module by the LoRa being ready for sending or Fsk data sends 1262 radio-frequency module of radio-frequency module to by SPI, sends the data to gateway by 1262 radio-frequency modules.
A kind of embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.

Claims (9)

1. a kind of 230MHz LoRa built-in module for meeting southern network mark standard, which is characterized in that the 230MHz LoRa built-in mould Block is mounted on inside electric energy meter, including main control module, clock module, radio-frequency module and power module, the radio-frequency module are 2 A, respectively upstream radio-frequency module and downlink radio frequency module, the upstream radio-frequency module and upstream radio-frequency module pass through SPI respectively Main control module is connected, data are pressed 230MHz LoRa agreement framing, send radio-frequency module to by SPI, institute by the main control module It states radio-frequency module and sends the data to gateway.
2. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that described 2 Radio-frequency module is connected with combiner, realizes the function of uplink and downlink radio frequency combining output.
3. the 230MHz LoRa built-in module according to claim 1 or 2 for meeting southern network mark standard, which is characterized in that described Radio-frequency module is connected with radio-frequency antenna, the radio-frequency antenna perpendicular circuit board installation by combiner.
4. the 230MHz LoRa built-in module according to claim 1 or 2 for meeting southern network mark standard, which is characterized in that described Radio-frequency module is SX1262 radio-frequency module.
5. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that the master Control module is also connected with temperature and humidity sensing module and clock module.
6. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that the master Control module is also connected with LED light.
7. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that the master Control module is also connected with 1.5F capacitor.
8. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that the master Control module is also connected with double 12 needle in serial ports.
9. the 230MHz LoRa built-in module according to claim 1 for meeting southern network mark standard, which is characterized in that described Baseline layer and bus plane is separately provided in the circuit board of 230MHz LoRa built-in module.
CN201821315823.3U 2018-08-15 2018-08-15 A kind of 230MHz LoRa built-in module meeting southern network mark standard Expired - Fee Related CN208401842U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110610603A (en) * 2019-10-21 2019-12-24 贵州电网有限责任公司 Electric energy meter concentrator communication module based on LoRa technique
CN111599149A (en) * 2020-04-30 2020-08-28 广东电网有限责任公司 230MHZ LoRa type built-in communication module and system thereof
CN111654430A (en) * 2020-04-30 2020-09-11 广东电网有限责任公司 230MHz LoRa type communication gateway and system thereof
CN112485750A (en) * 2020-11-09 2021-03-12 杭州西力智能科技股份有限公司 Communication module interface testing method and system for intelligent electric meter
CN115190445A (en) * 2022-09-09 2022-10-14 国网湖北省电力有限公司 Method and system for monitoring real-time information of power gateway

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110610603A (en) * 2019-10-21 2019-12-24 贵州电网有限责任公司 Electric energy meter concentrator communication module based on LoRa technique
CN111599149A (en) * 2020-04-30 2020-08-28 广东电网有限责任公司 230MHZ LoRa type built-in communication module and system thereof
CN111654430A (en) * 2020-04-30 2020-09-11 广东电网有限责任公司 230MHz LoRa type communication gateway and system thereof
CN112485750A (en) * 2020-11-09 2021-03-12 杭州西力智能科技股份有限公司 Communication module interface testing method and system for intelligent electric meter
CN115190445A (en) * 2022-09-09 2022-10-14 国网湖北省电力有限公司 Method and system for monitoring real-time information of power gateway

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