Low-power-consumption remote wireless transmission system

Abstract

The invention discloses a low-power-consumption remote wireless transmission system, comprising a main MCU, a plurality of branch MCUs and radio frequency chips corresponding to the MCUs. The main MCUand the corresponding radio frequency chip form a wireless transmission center node. The plurality of branch MCUs are connected with the corresponding radio frequency chips to form wireless transmission subnodes. The radio frequency chips correspondingly connected with the MCUs are wireless radio frequency transceiver chips based on a LoRa technology. A star network topology structure is employedbetween the center node and the subnodes. The center node and the subnodes are networked through adoption of a TDMA medium access layer protocol. The subnodes finish collecting data and send the datato the center node in corresponding time slots. The center node gathers the data and is connected with a host. The data is displayed by the host. The subnodes ensure the low power consumption of networking in an RTC clock automatic wakeup mode, and moreover, through matching of a frequency hopping communication technology, the same frequency interference problem of the wireless transmission system is reduced. According to the system, a demand of an Internet of things application for power consumption and distance is satisfied, and the system can be widely applied to smart city projects such as smart parking and intelligent meter reading.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a low-power long-distance wireless transmission system. Background technique [0002] The Internet of Things is considered to be the third wave of the information revolution after computers and the Internet. So far, the Internet of Things has received great attention all over the world, and many countries and companies have proposed their own development strategies for the Internet of Things. Chinese government departments have shown positive support for the development of the Internet of Things industry, and have issued a series of policy documents to promote the development of the Internet of Things industry. On December 27, 2016, the "Thirteenth Five-Year" National Informatization Specification issued by the State Council contained 20 references to the "Internet of Things", and clearly proposed 10 special action plans for the development of the Internet of Things to im...

AI Technical Summary

Problems solved by technology

Existing mature wireless communication technologies cannot meet the requirements of Internet of Things applications for transmission distance and power consumption

At this stage, there is no low-cost, long-distance and low-power wireless transmission solution that solves the above problems in the market

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