Information transmission system and method for supervising entrance and exit of migrant population living places

Abstract

The invention discloses an information transmission system and method for supervising entrance and exit of a migrant population living place. The system is composed of a LoRa terminal set, a LoRa gateway, an NB-IoT terminal set, an NB-IoT base station and an information fusion processing platform. The information transmission system adopts a LoRa architecture integrated with NB-IoT, so that the requirements of scattered distribution and entrance and exit supervision of connected centralized living places are met, and TCO of the system is reduced; a LoRa complete system is maintained to design an inner antenna and an outer antenna of a door, the shielding effect of a metal door on LoRa signals is eliminated, and the reliability of the system is improved; an LC filter circuit of LoRa is improved by means of a surface acoustic wave filter, and a Bluetooth module guarantees legal authority of house property owners for door opening / closing authorization; according to entrance and exit data of the lessee living place, the LoRa working mode is set as required, and the low power consumption and real-time performance of the information transmission system are both considered.

Description

technical field [0001] The invention belongs to the information transmission category of the Internet of Things. In particular, it refers to the information transmission system and method that integrates NB-IoT, adopts dual antennas inside / outside the door, sets the LoRa working mode according to the person, and supervises the entry and exit of the floating population. Background technique [0002] With the continuous advancement of my country's urbanization process, a large number of floating population has poured into cities. In 2019, the permanent floating populations of Shanghai, Guangzhou, Shenzhen, Beijing, and Hangzhou were 972.69, 967.33, 818.11, 7.9430, and 4.5044 million, respectively. To explore the countermeasures to the issue of urban floating population supervision, after years of practice, local management departments at all levels have reached a consensus: based on the door locks of residential places to supervise the floating population, the outline is clea...

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Problems solved by technology

[0012] [4] Liu Naian. Implementation method of MAC protocol in wireless sensor network based on LoRa [P]. ZL2016103902162. Proposes that the gateway node divides the terminal nodes into multiple groups according to the distance to different terminal nodes, so as to solve the problem of small network capacity and power failure of the MAC protocol. The problem of high consumption and poor scalability

LoRa is a complete system; no matter it is based on TDMA networking, time stamp exchange technology, or ACB mechanism, terminal node grouping, the LoRa system has been revised. The revision has a price, and the price is the versatility and compatibility of the system. Damaged, and the engineering feasibility needs to be verified

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