Seamless and efficient communication mechanism between wireless multimedia sensor network nodes

Abstract

The invention discloses a seamless and efficient communication method between wireless multimedia sensor network nodes, and relates to the solution for the communication between two nodes with different functions in a wireless multimedia sensor network. In the method, sensor nodes consist of five main modules, namely a processor module, a wireless multimedia sensor network Zigbee communication module, a sensor module, a memory module and a power supply module, wherein the sensor nodes are disposed in a certain monitoring area; data transmitted from a last node is received and forwarded by using a Zigbee wireless communication module; protocol conversion does not need to be performed between a multimedia sensor node and a common sensor node; and the data is transmitted back to a management centre by using the Internet. The communication mechanism realizes the seamless and efficient communication between the multimedia sensor node and the common sensor node without performing the conversion between a multimedia sensor network communication protocol and a common sensor network communication protocol.

Description

technical field [0001] The invention relates to a communication solution between two nodes with different functions in a wireless multimedia sensor network, and belongs to the intersection field of embedded development and computer network technology. Background technique [0002] With the development of microelectronics technology and the maturity of wireless sensor networks, the monitoring environment is becoming more and more complex and changeable. The simple data obtained by traditional sensor networks cannot meet people's overall needs for environmental monitoring. There is an urgent need to enrich the information The image, audio, video and other media are introduced into the environmental monitoring activities based on the sensor network to achieve fine-grained and accurate information environmental monitoring. The wireless multimedia sensor developed on this basis has gradually entered our world. It is an improvement on traditional wireless sensors, such as adding C...

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Problems solved by technology

[0004] The inventor found in the research process that these three schemes all have different defects: the first scheme, this deployment scheme results in an average of two sensor nodes at the same monitoring site, and the two sensor nodes cannot communicate, To obtain the sensing data of a certain location, the management center needs to send two commands, and the two sensor nodes send the sensing data back to the management center, each of which needs to perform routing and data transmission once. For comprehensive monitoring, the disadvantage is that the resources of the wireless multimedia sensor network are wasted too much, and the cost will be greatly increased

In the second scheme, only one sensor node is needed at the same detection site, which solves the two commands and two routing and data transmissions of the first scheme, saves a certain amount of network resources and reduces the number of nodes, but its disadvantages are Integrating multimedia sensors and ordinary sensors on the same node at the same time increases the cost of a single node, thereby increasing the overall cost of deploying the network and causing a certain waste of network resources

The disadvantage is that due to the large amount of multimedia sensing data, the use of common sensor network protocols to transmit multimedia data will consume energy resources of sensor nodes too quickly, and energy resources are precisely the most precious resources in sensor networks.

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