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Low-power-consumption wireless sensor ad hoc network and communication method

A wireless sensor and communication method technology, applied in wireless communication, network topology, energy consumption reduction, etc., can solve the problems of difficult change of affiliation relationship, cumbersome configuration process, poor networking efficiency, etc., and achieve the effect of increasing the success rate of registration

Pending Publication Date: 2022-05-27
四川菁能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing sensors use the RS485 communication protocol, and a few sensors use wireless communication. It needs to be configured in advance by the management system at the installation site and sent to the sensors to communicate normally; the configuration process is cumbersome and completely depends on the experience of the configuration personnel. Assign the affiliation relationship between nodes and aggregation nodes, and once the distribution is made, it is difficult to change the affiliation relationship; if it needs to be changed, manual adjustment is still required, and the networking efficiency is poor; During use, it is impossible to reorganize the network; the wireless signal has factors such as multipath effect and electromagnetic interference, and has a strong correlation with the installation and use environment. The management relationship needs to be dynamically adjusted to meet the requirements of highly reliable wireless communication

Method used

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  • Low-power-consumption wireless sensor ad hoc network and communication method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] like figure 1 As shown, a communication method based on a low-power wireless sensor ad hoc network, the low-power wireless sensor ad hoc network includes a communication link, and the communication link is composed of a gateway, a sink node and at least one sensor , including the following steps:

[0039] S1: The access node and the aggregation node use the same physical channel to communicate in the north direction, and the aggregation node and the terminal use another physical channel to communicate in the south direction; the carrier communication frequency, bandwidth, spreading factor, and transmit power of the physical channel are configured through wireless communication. The access node is divided into a main node and a sub-node, the main node is a gateway, the sub-node is an aggregation node, and the terminal is a sensor, and the sensor can be a plurality of different types of sensors;

[0040] S2: The communication cycle is divided into several frames, and eac...

Embodiment 2

[0057] On the basis of Embodiment 1, after the sensor is networked, the sink node controls whether the sensor needs to be re-networked according to the received information quality of the sensor;

[0058] The sink node reports the registration information of the sensor immediately, and determines whether the sensor needs to be re-networked according to the situation of the sensors under the jurisdiction of each sink node of the gateway and the signal quality between the sink node and the sensor. When the re-registration command of the sink node is executed, the re-sweep registration is automatically initiated, which simplifies the process of re-networking when the communication signal between the sensor and the sink node is poor.

[0059] Specifically, in the communication cycle, when the sensor fails to communicate in the current frame, the sensor performs a competitive reporting in the idle period of the communication cycle.

[0060] Specifically, when the broadcast frame si...

Embodiment 3

[0064] On the basis of Embodiment 2, each sink node reserves network configuration management time. Specifically, during this time period, the sink node can wake up the sensor to perform parameter configuration, time calibration, and data supplementary copying.

[0065] Among them, the specific steps of data supplementary copying are as follows:

[0066] S1: The broadcast frame issued by the sink node wakes up the sensor;

[0067] S2: After the sensor is woken up, it sends a wake-up response to the sink node;

[0068] S3; the sink node sends a meter reading command to the sensor;

[0069] S4: The sensor feeds back the collected data information to the sink node;

[0070] S5: After receiving the data information, the sink node sends an end communication instruction to the sensor.

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Abstract

The invention discloses a communication method based on a low-power-consumption wireless sensor ad hoc network, and relates to the technical field of wireless sensor ad hoc networks, the low-power-consumption wireless sensor ad hoc network comprises a communication link, the communication link is composed of a gateway, a sink node and at least one sensor, and the working time sequence of the sensor, the sink node and the gateway is orderly carried out. Wireless silence is carried out during a gateway downlink frame working period through aggregation node coordination, and communication with a sensor is started after gateway transmission is finished, so that wireless signals are ensured not to interfere with each other; registration information of the sensors is reported instantly by the sink nodes, whether the sensors need to be networked again is determined according to the conditions of the sensors under the jurisdiction of the sink nodes of the gateway and the quality of signals between the sink nodes and the sensors, and when the sensors receive re-registration commands of the sink nodes, the sensors automatically start frequency sweeping registration again. According to the mode, the re-networking process is simplified under the condition that communication signals between the sensors and the aggregation nodes are poor.

Description

technical field [0001] The present invention relates to the technical field of wireless sensor ad hoc networks, and more particularly to a communication method of a low-power wireless sensor ad hoc network. Background technique [0002] Wireless sensor ad hoc network refers to a wireless network composed of a large number of stationary or moving sensors in an ad hoc manner. In information systems that monitor and control objects and the environment. [0003] Most of the existing sensors use the RS485 communication protocol, and a few sensors use wireless communication, which needs to be pre-configured by the management system at the installation site and sent to the sensor to communicate normally; the configuration process is cumbersome and depends entirely on the experience of the configuration personnel. Assign the affiliation between nodes and aggregation nodes, and once assigned, its affiliation is difficult to change; if it needs to be changed, it still needs to be adj...

Claims

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Application Information

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IPC IPC(8): H04W84/18H04W4/38H04W60/00H04W24/04
CPCH04W84/18H04W4/38H04W60/00H04W24/04Y02D30/70
Inventor 刘新权税少洪吴红刘云波
Owner 四川菁能科技有限公司
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