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Wireless communication method based on common flue environment

A public flue and wireless communication technology, applied in wireless communication, sustainable communication technology, message/mailbox/notification, etc., can solve the problems of long communication distance, wireless signal attenuation, long length, etc., to avoid mutual interference, transmission Effect of increased distance, extended distance

Active Publication Date: 2017-12-01
HANGZHOU ROBAM APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The public flue is a long and narrow structure, not only small in diameter, but also long in length. In addition, reinforced concrete structures are commonly used in current buildings, which leads to severe attenuation of wireless signals during internal communication.
In order to ensure the stable and reliable communication between the ventilation equipment on the roof and the check valves on each floor, it is usually necessary to increase the transmission power of the wireless signal, but the transmission power of the radio is limited by the country, so a new type of transmission with small transmission power and long communication distance is developed. Long wireless communication method looms

Method used

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  • Wireless communication method based on common flue environment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: In this wireless communication method based on the public flue environment, when wireless communication is performed in the public flue environment, the master and the slave adopt a wireless jump transmission method, and each floor is equipped with a slave; In the downlink communication link, the message sent by any slave x contains all the information sent by the master to slave x-1 to slave 1. In the uplink communication, the message sent by any slave x includes slave 1 to slave x. -1 All information sent to the master, where x is the number of the slave and corresponds to the number of floors where it is located, ranging from 1-n, and n is the maximum number of floors. By adopting the method described in this embodiment, long-distance transmission is realized by way of skipping transmission of wireless signals under a relatively small transmission power.

Embodiment 2

[0039] Embodiment 2: In this wireless communication method based on a public flue environment, the wireless communication process in the method is cyclically performed as follows:

[0040] 1. Downlink communication link: the master sends information to each slave

[0041] (1) The host sends a message, and the message includes the downlink identifier, host identifier, Hn, Hn-1,..., H2, H1;

[0042] (2) The slave n receives the message, performs data processing and waits for a short time;

[0043] (3) The slave machine n sends a message, the message contains the downlink identifier, the slave machine n identifier, Hn-1,..., H2, H1;

[0044] (4) The slave n-1 receives the message, performs data processing and waits for a short time;

[0045] (5) The slave n-1 sends a message, and the message contains the downlink identifier, the slave n-1 identifier, Hn-2,..., H2, H1;

[0046] (6) Repeat steps (4) and (5) until the slave 2 receives the message, performs data processing and waits for a short ...

Embodiment 3

[0055] Embodiment 3: On the basis of embodiment 2, a communication cycle includes 2n transmissions in total. At any time, there is only one message transmission at most, which avoids mutual interference of wireless signals. The signals are sent sequentially through two adjacent nodes. It not only avoids the omission of node signals, but also extends the distance of signal transmission.

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Abstract

The present invention discloses a wireless communication method based on a common flue environment. When wireless communication is performed in a common flue environment, a wireless jump pass mode is employed between a host and slaves, and one slave is arranged at each floor; at a downlink communication link, message sent by any one slave x includes all the information sent by the host from a slave (x-1) to the slave 1; and at an uplink communication link, the message sent by any one slave x includes all the information sent to the host from the slave 1 to the salve (x-1). The wireless communication method based on the common flue environment allow the wireless signals to realize long-term transmission in a low emission power through a jump pass mode. The emission power of the wireless signals can accord with the requirements of the country for the radio emission power limitation.

Description

Technical field [0001] The invention relates to the field of wireless communication, and is mainly a wireless communication method based on a public flue environment. Background technique [0002] The distance of wireless signal transmission is affected and restricted by the transmission power. The larger the transmission power, the longer the transmission distance, and the smaller the transmission power, the shorter the transmission distance. In the case of wireless signal attenuation verification in the public flue, the wireless communication distance is greatly reduced. If spread spectrum, hop transmission and other technologies are used to increase the transmission distance, spread spectrum technology such as LoRa, the transmission distance is increased compared with ordinary technology, but in the harsh environment inside the public flue, the country has Under the limited conditions of the transmission power, the demand is still not met, and the technology is relatively comp...

Claims

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Application Information

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IPC IPC(8): H04B1/713H04W4/12H04W40/20H04W84/20
CPCH04B1/713H04W4/12H04W40/20H04W84/20Y02D30/70
Inventor 任富佳何峰
Owner HANGZHOU ROBAM APPLIANCES CO LTD
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