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Method for time synchronization of wireless sensor

A wireless sensor and time synchronization technology, applied in the field of wireless sensor networks, can solve the problems of wireless sensor time consistency, wireless sensor energy consumption, time easy to lose synchronization, etc., to reduce the possibility, reduce power consumption, and avoid data The effect of conflict

Inactive Publication Date: 2017-03-01
QINGDAO ZKMIOT TECH CO LTD
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Problems solved by technology

Of course, in some data processing processes, we do not need to make the time accurate to milliseconds without errors. Within the allowable range of error, the system time of each wireless sensor will be difficult to keep consistent due to changes in the operating environment. , causing the time of each node to be easily out of synchronization. At the same time, in the process of time synchronization, the wireless sensor has the defect of consuming a lot of energy, especially when the wireless sensor communicates with the wireless gateway.

Method used

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  • Method for time synchronization of wireless sensor
  • Method for time synchronization of wireless sensor
  • Method for time synchronization of wireless sensor

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Embodiment Construction

[0020] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0021] see figure 1 , 2 , in this embodiment, the time synchronization method includes a wireless gateway 2 and at least one wireless sensor 1 . The wireless sensor 1 establishes a wireless channel connection with the wireless gateway 2 .

[0022] Specifically, the time synchronization method for the wireless sensor 1 is performed when the wireless gateway 2 can communicate wire...

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Abstract

The present invention discloses a method for time synchronization of a wireless sensor, comprising a wireless gateway and at least one wireless sensor. The wireless sensor establishing a wireless channel connection with a wireless gateway, the wireless gateway sends instructions to the wireless sensor in a time calibration period including a WOR wake-up cycle and a duty cycle, and the wireless sensor calibrates the time of its own by receiving a calibration time packet of the wireless gateway.

Description

technical field [0001] The present application relates to the technical field of wireless sensor networks, in particular to a method for time synchronization of wireless sensors. Background technique [0002] The wireless sensor network is composed of a large number of wireless sensor nodes deployed in the monitoring area. It forms an ad hoc network through wireless communication. Time synchronization is the most basic requirement in wireless sensor networks. Most of the protocols used in wireless sensor networks and All applications need time synchronization, such as ranging and positioning, data transmission, cooperative transmission and processing, etc., all need to achieve time synchronization. [0003] At present, the wireless sensor network is a distributed system, and the local time of each node is independent of each other, which causes the system time of each node to be different from each other. However, in network applications, all nodes need to work together, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W56/00
CPCH04W52/0274H04W56/0015Y02D30/70
Inventor 林克坚窦强蔡旭东
Owner QINGDAO ZKMIOT TECH CO LTD
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