Meter reading module based on Lora wireless sensor network

Abstract

The invention discloses a meter reading module based on a Lora wireless sensor network, the meter reading module includes a PC, a plurality of ammeters and gateway nodes which are connected with the PC through serial ports, the ammeters are connected with Lora modules as routing nodes through the serial port, the ammeters supply power to the Lora modules, each Lora module includes a mcu and a radio frequency ( rf ) chip, the radio frequency ( rf ) chip and the mcu are connected, the Lora modules are networked by the radio frequency ( rf ) chips, the Lora modules and the gateway nodes are networked by the radio frequency ( rf ) chips, the Lora modules are networked mutually, a superior connection point of the Lora modules also can be Lora modules, the meter reading problem is solved, at the same time, end-to-end low-transmission time-delay communication can be guaranteed, at the same time, the meter reading module has high reliable communication ability in large-scale and high density node layout scenarios, and has the advantages of a high network coverage rate, a flexible structure, high reliability, strong versatility, simple construction and laying and convenient maintenance.

Description

Technical field [0001] The invention belongs to the field of wireless communication control equipment, and specifically relates to a meter reading module based on a lora wireless sensor network. Background technique [0002] Many meters are used in modern life, such as electricity meters, water meters, gas meters, etc. The meter reading methods include manual meter reading and automatic meter reading. The automatic meter reading methods include RS485 bus mode, low-voltage power line carrier technology mode, GSM / GPRS / CDMA communication methods, wireless meter reading, etc., these methods have more or less shortcomings. For example, RS485 bus method of meter reading has the problem of heavy construction and wiring work, difficult to maintain, and not suitable for large-scale meter reading. Low-voltage power lines Carrier technology means meter reading. Carrier signals are susceptible to interference. GSM / GPRS / CDMA communication means higher hardware cost for meter reading and requ...

AI Technical Summary

Problems solved by technology

[0002] Many meters are used in modern life, such as electricity meters, water meters, gas meters, etc. The meter reading methods include manual meter reading and automatic meter reading. The automatic meter reading methods include RS485 bus method, low-voltage power line carrier technology method, GSM / GPRS / CDMA communication methods, wireless meter reading, etc., these methods have more or less shortcomings, such as RS485 bus meter reading has the problem of heavy construction and wiring work, difficult maintenance, and is not suitable for large-scale meter reading. Low-voltage power lines Carrier technology method for meter reading Carrier signal is susceptible to interference, GSM / GPRS / CDMA communication method has high hardware cost for meter reading, and needs to pay operator fees, ordinary wireless meter reading usually has a single channel, and the meter nodes between each station area They are easy to interfere with each other, and the uploaded data is unstable. In the smart meter reading industry, the current wireless meter reading has taken a very important position. However, the existing wireless meter reading schemes all use fsk modulation technology, which has a short communication distance and cannot be completed on complex sites. Communication relay, susceptible to interference problems

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