Intelligent instrument data transmission method based on LoRa technology

A data transmission method and technology of smart meters, applied in the field of data transmission of smart meters based on LoRa technology, can solve the problems of high cost, poor data transmission stability, short transmission distance, etc., to achieve convenient construction and later maintenance, and improve safety. and correctness, the effect of reliable transmission

Inactive Publication Date: 2018-01-09
石化盈科信息技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the transmission distance of these two transmission methods is short, and multiple wireless relays need to be placed on site for data storage and forwarding
If it is used in a large-scale factory area, the cost of this solution is high and the stability of data transmission is poor

Method used

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  • Intelligent instrument data transmission method based on LoRa technology
  • Intelligent instrument data transmission method based on LoRa technology
  • Intelligent instrument data transmission method based on LoRa technology

Examples

Experimental program
Comparison scheme
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no. 1 example

[0033] figure 1 It is a schematic diagram of the long-distance wireless data transmission system according to the first embodiment of the present invention. Such as figure 1 As shown, it may include multiple smart meters 101 , a gateway 102 and an enterprise server 103 . Wherein, each smart meter 101 is equipped with a data acquisition module, a control module and a LoRa module. The data acquisition module is used to collect field data. The LoRa module has a built-in antenna that can transmit radio wave signals. It has the characteristics of low power consumption, long transmission distance and strong anti-interference ability. Each smart meter 101 can transmit a long-distance radio wave signal to the gateway 102 through its configured LoRa module, where the long-distance can be greater than 5Km. The control module is used to analyze and process the data collected by the data acquisition module and drive the LoRa module to emit radio wave signals. The gateway 102 is confi...

no. 2 example

[0052] image 3 It is a flow chart of the LoRa technology-based smart meter data transmission method according to the second embodiment of the present invention. Such as image 3 As shown, steps S61, S63 and S65 are added on the basis of the first embodiment.

[0053] In step S61, the gateway 102 performs a CRC check on the decrypted target data packet to determine whether there is a transmission error. When the result of the CRC check is a transmission error, go to step S63. When the CRC check result is correct, go to step S65.

[0054] In step S63, the retransmission data signal is fed back to the smart meter 101, and the process goes to step S50. Preferably, the upper limit of the number of times to feed back the resend signal to the smart meter 101 is 5 times.

[0055] Optionally, in the target data sending step S50, after the smart meter 101 sends the encrypted target data packet to the gateway 102 on the corresponding channel through the LoRa module, it stays on the...

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Abstract

The invention discloses an intelligent instrument data transmission method based on the LoRa technology. The method comprises the following steps: an intelligent instrument generates a target data packet by using collected field data, and encrypts the target data packet by using a corresponding encryption operator, wherein each intelligent instrument has the respective corresponding encryption operator; the intelligent instrument sends a handshake signal to a gateway on a corresponding channel via an LoRa module, wherein each intelligent instrument has the respective corresponding channel; when the gateway monitors the handshake signal on the channel, the gateway feeds back a handshake success signal to the intelligent instrument on the channel; the LoRa module sends the encrypted target data packet to the gateway on the channel after receiving the handshake success signal; the gateway decrypts the encrypted target data packet by adopting a decryption operator corresponding to the encryption operator after receiving the encrypted target data packet; and the gateway forwards the decrypted target data packet to an enterprise server. By adoption of the intelligent instrument data transmission method disclosed by the invention, the objective of reliable multipoint-to-single-point remote wireless data transmission can be achieved.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a LoRa technology-based smart meter data transmission method. Background technique [0002] A large number of instruments and meters are used in petroleum refining and chemical enterprises. Due to the relatively large area of ​​the plant area and the scattered installation of instruments and meters, the way of data transmission and control through wired (network cable, RS485 bus, RS232 bus) will greatly affect the construction and later stages of the enterprise. Maintenance brings many difficulties. [0003] With the continuous development of industrial Internet of Things technology, in the industrial field, various instruments and meters have begun to use wireless data transmission methods to gradually replace wired (network cable, RS485 bus, RS232 bus) data transmission methods. Instrumentation transmits data through wireless, which makes the equipment easy to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L9/08H04L29/06G08C17/02
Inventor 张少宁张九华李彪
Owner 石化盈科信息技术有限责任公司
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