Discrete wireless sensing private network, system and data transmission mode thereof

Abstract

The invention discloses a discrete wireless sensing private network, a system and a data transmission mode thereof. The discrete wireless sensing private network comprises a coordination node and a plurality of channels, each channel corresponds to a discrete sub-network, the coordination node is arranged in a discrete sub-network, and the coordination node is arranged in the discrete sub-network. Each discrete subnet comprises an edge router, a plurality of routing nodes and a plurality of terminal nodes, and the plurality of discrete subnets are distributed in different areas or at different positions of the same area; and the routing node, the terminal node and the edge router are in communication connection. According to the invention, a cross-regional discrete wireless sensing private network containing a plurality of discrete sub-networks is established, and each discrete sub-network covers different physical regions, so that different-place coverage in different cities and different provinces can be realized under the condition that the low power consumption, low bandwidth and inter-node transmission distance of the sensing network are not changed; therefore, the problem that a traditional sensor network covers a limited physical area in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a discrete wireless sensor network, a system and a data transmission method thereof. Background technique [0002] Internet of things (Internet of things) and related wireless sensor network (Wireless Sensor Network) technology is one of the active information technologies at home and abroad in recent years. The application of the Internet of Things in industrial monitoring, environmental protection, public safety and other fields is becoming more and more extensive. Wireless sensor network technology has been deeply involved in various industrial instruments and monitoring devices, and plays an important role in the construction of metering instruments, safety monitoring, gas detection, environmental monitoring, pollution source monitoring and other systems. [0003] as attached figure 1 As shown, a wireless sensor network (Wireless Sensor Network) is an ad hoc network (...

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Problems solved by technology

[0005] However, in actual application, we found that conventional sensor network technology has major limitations:

[0006] 1. The physical area covered by a traditional sensor network is very limited. The current sensor network protocols such as Zigbee and Wireless Hart, etc., because there are many obstacles in the industrial site, including metal obstacles, a sensor network usually can only cover 1- an area of ​​2 square kilometers;

[0007] 2. The scalability of the sensor network is limited

In the wireless sensor network, it is inevitable to find the path, maintain the relationship between the routes, and broadcast the control message frequently.

The broadcast technology in the mesh network is one of the main reasons for consuming a large amount of bandwidth. However, the bandwidth of the sensor network is extremely limited. When the broadcast occurs, the bandwidth required by the control plane increases, which greatly limits the data transmission capacity of the sensor network.

Due to the expansion of terminal nodes, the number of routers will inevitably be increased, and the bandwidth occupied by broadcast messages will increase geometrically, which will further reduce the effectiveness and availability of bandwidth, and even cause the entire sensor network to be blocked and paralyzed.

[0008] 3. The existing sensor network technology cannot realize the integration of terminal devices in different regions into the same sensor network, which has low efficiency and high management costs

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