Wireless temperature acquisition system

Abstract

The invention discloses a wireless temperature acquisition system, which is characterized in that it includes: wireless temperature sensors placed in rooms on each floor, signal converters placed on the top and bottom floors of buildings to convert wireless signals into wired signals, placed in The data collector in the monitoring room, and the RS-485 communication bus used to realize the data transmission between the data collector and the signal converter. The advantage of the present invention is that: adopting the longitudinal data transmission mode, there are only floor cement board intervals between points, which has nothing to do with the house structure, and the wireless transmission effect is not limited by the house structure; on the basis of the longitudinal wireless data transmission, an RS-485 Communication bus, the longitudinal wireless temperature sensor node forms a ring data network with the RS-485 communication bus through the signal converter, when a wireless temperature sensor node fails, the data link is broken, and the data collector can communicate through RS-485 The bus collects data separately on both sides of the breakpoint, which effectively solves the problem of wireless vertical communication link disconnection.

Description

technical field [0001] The invention relates to a temperature collection system, in particular to a wireless temperature collection system, which belongs to the technical field of wireless sensor networks. Background technique [0002] The temperature data of each room in the building is transmitted by wireless signal. At present, the form of grid network and point-to-point handle is mostly used, that is, each point is a route. [0003] This method involves horizontal wireless communication. Due to the limited penetration of wireless to the wall, this communication is greatly restricted by the structure of the house. That is, as the number of wall layers between points increases or the wall thickness increases, the wireless communication The results are poor and data collection is often unreliable. [0004] In addition, in the horizontal wireless communication, because each point is in the form of routing and cannot sleep, it consumes a lot of power and cannot use batteries...

AI Technical Summary

Problems solved by technology

[0003] This method involves horizontal wireless communication. Due to the limited penetration of wireless to the wall, this communication is greatly restricted by the structure of the house. That is, as the number of wall layers between points increases or the wall thickness increases, the wireless communication Poor performance, often unreliable data collection

[0004] In addition, in the horizontal wireless communication, because each point is in the form of routing, it cannot sleep, so it consumes a lot of power, and it cannot work with batteries for a long time

Images