LoRa-based wireless meter reading system

Abstract

The invention provides a LoRa-based wireless meter reading system, and belongs to the field of meter reading systems. The LoRa-based wireless meter reading system comprises: a background server; a concentrator connected with the background server; and at least one collector respectively connected with the concentrator and at least one first ammeter. The concentrator used as a gateway, and the at least one collector and a second ammeter which are used as nodes form a LoRa star network, and the communication avoiding mechanism between the concentrator and the at least one collector and between the concentrator and the at least one second ammeter realizes the transmission of collected information and ammeter information through different channels. The LoRa-based wireless meter reading systemhas the following advantages: the LoRa star network is formed by the concentrator used as a gateway and the at least one collector and the second ammeter used as the nodes based on based on a LoRa wireless communication technology, so the system has the advantages of long communication distance, strong anti-interference ability, low power consumption, fastness in networking, completion of node management, and ensuring the system running without errors for a long time; and the reasonable communication avoiding mechanism realizes a reasonable channel collision avoiding mechanism, ensures no conflict of wireless channels and ensures the stability of data transmission.

Description

technical field [0001] The invention relates to the technical field of meter reading systems, in particular to a LoRa-based wireless meter reading system. Background technique [0002] Most of the current wireless meter reading units use 2.4G and 3G / 4G wireless communication technology. Most of the 2.4G communication technology is based on the MESH topology structure, which requires multi-level relays to ensure stable and effective data transmission. At the same time, the MESH topology structure also It is doomed that the current wireless meter reading unit has complex structure and high power consumption. [0003] Existing wireless meter reading units have not yet used LoRa wireless communication technology. In the patented remote wireless meter reading system based on Zigbee and GPRS with the application number of 201510612690.0, zigbee wireless communication is used to complete the data collection of electric meters in the building. Through zigbee wireless technology and...

AI Technical Summary

Problems solved by technology

For the former 2.4G, the transmission distance of this wireless communication method is relatively short, and the anti-interference ability is weak. After being blocked by multi-layer walls, the distance is greatly reduced. Therefore, a multi-level relay method is required in the building to ensure full coverage. Floor coverage, and the mesh structure composed of multi-level relays brings problems such as complex structure and high power consumption. At the same time, multi-level relays directly lead to doubled data transmission time and reduced real-time performance; for the latter 3G / 4G , although this wireless technology can basically cover the ground part of the building, it cannot guarantee the basement well, and its monthly rent will bring huge costs in the long run; in addition, the existing meter reading The system cannot implement a reasonable channel conflict avoidance mechanism and cannot guarantee the stability of data transmission

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