Sensor network for environmental monitoring and data transmission method

Abstract

The invention provides a sensor network for environmental monitoring. The sensor network comprises one or more sensing nodes, a plurality of routing nodes and a center node, wherein the sensing node is used for acquiring sensing data and transmitting a sensing data packet to the plurality of routing nodes; the routing node is used for receiving the sensing data packet, setting delayed forwarding time for the received sensing data packet, and forwarding the sensing data packet to a parent node of the routing node at the delayed forwarding time under the condition that the sensing data packet is not forwarded by another routing node at a current moment; the parent node is the center node or another routing node; the delayed forwarding time is randomly selected; and the center node is used for summarizing the sensing data packets. The invention also provides a corresponding data transmission method. By the sensor network and the method, the problem of over-high 'hotspot' energy consumption speed in the network is effectively solved, thereby prolonging the service life of the network. The outdegree of each sensing node is far more than 1, so data loss can be completely avoided.

Description

technical field [0001] The present invention relates to the technical field of the Internet of Things and the technical field of target monitoring, in particular, the present invention relates to a sensor network and a data transmission method for environmental monitoring. Background technique [0002] With the rapid development of microelectronics technology, computing technology, sensing technology and wireless communication technology, wireless sensor network has received more and more attention, and has shown great application value in both civilian and military fields. The wireless sensor network is composed of a large number of cheap micro-sensor nodes deployed in the monitoring area, and forms a multi-hop self-organizing network system through wireless communication. information and send it to observers. Wireless sensor networks have the characteristics of convenient deployment, self-organizing network, low cost, close application integration, reliability and scalabi...

AI Technical Summary

Problems solved by technology

The first type uses GSM or GPRS wireless communication modules to collect data wirelessly within one hop, and finally transmits the data to the central server through the GSM or GPRS network with the help of the base station. This type of collection equipment is expensive and requires wired infrastructure. Support; the second type of data collection and transmission equipment adopts wired methods, such as collecting data through USB interface, serial port or dedicated industry standard interface, and transmitting data to the central server through wired LAN or wireless LAN. Such equipment is expensive and expensive. Inconvenient to deploy, difficult to deploy and maintain, and high cost

Images