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Data acquisition method of signal synchronous acquisition system based on wifi wireless and GPS timing

A signal synchronization and acquisition system technology, applied in the direction of signal transmission system, wireless communication, time division multiplexing system, etc., can solve problems such as unclear technical solutions and inability to realize technical solutions, so as to increase the scope and improve the validity of data , the effect of reducing costs

Active Publication Date: 2021-02-05
YMC PIEZOTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Application publication number CN105487448A, application publication date 2016.04.13, invention titled as a Chinese patent for a sensor data acquisition device based on GPS synchronous timing, although the application mentioned GPS synchronous timing, wireless data transmission, etc., but its specific technology The solution is not clear, and those skilled in the art cannot realize the technical solution at all

Method used

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  • Data acquisition method of signal synchronous acquisition system based on wifi wireless and GPS timing
  • Data acquisition method of signal synchronous acquisition system based on wifi wireless and GPS timing
  • Data acquisition method of signal synchronous acquisition system based on wifi wireless and GPS timing

Examples

Experimental program
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Effect test

Embodiment 1

[0085] A data acquisition method based on WiFi wireless and GPS timing signal synchronous acquisition system, comprising the following steps:

[0086] a. Distribute a plurality of sensor nodes 1 in different places of the scene according to the actual scene, and configure a WiFi module 2, a power management module 3, a data acquisition module 4 and a GPS module 6 connected with satellite 5 electric signals for each sensor node, and more The sensor nodes 1 form a wireless sensor network through a star network topology;

[0087] b. One of the sensor nodes of multiple sensor nodes 1 is used as a gateway node, and its WiFi mode is set to AP+station mode; other sensor nodes are ordinary sensor nodes, and its WiFi module is set to station mode;

[0088] c. Initialize the I2C communication bus of each sensor node 1;

[0089] d. The general controller MCU unit 7 of the data acquisition module 4 of the sensor node 1 starts to obtain the power information of the power management module...

Embodiment 2

[0106] A data acquisition method based on WiFi wireless and GPS timing signal synchronous acquisition system, comprising the following steps:

[0107] a. Distribute a plurality of sensor nodes 1 in different places of the scene according to the actual scene, and configure a WiFi module 2, a power management module 3, a data acquisition module 4 and a GPS module 6 connected with satellite 5 electric signals for each sensor node, and more The sensor nodes 1 form a wireless sensor network through a star network topology;

[0108] b. One of the sensor nodes of multiple sensor nodes 1 is used as a gateway node, and its WiFi mode is set to AP+station mode; other sensor nodes are ordinary sensor nodes, and its WiFi module is set to station mode;

[0109] c. Initialize the I2C communication bus of each sensor node 1;

[0110] d. The general controller MCU unit 7 of the data acquisition module 4 of the sensor node 1 starts to obtain the power information of the power management module...

Embodiment 3

[0134] In this embodiment, on the basis of Embodiment 2, the wire width of the connecting wire between the RFIO pin of the USR-C216 wireless module and the antenna RF is designed to be 20mil, which is designed according to impedance matching. In this embodiment, through the impedance matching design, all high-frequency microwave signals can be transmitted to the load point, and no signal will be reflected back to the source point, thereby improving energy efficiency.

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Abstract

The invention discloses a data acquisition method of a signal synchronous acquisition system based on WiFi wireless and GPS timing, and belongs to the technical field of structural health monitoring. The problems of low efficiency, out-of-synchronization of data and inability to reliably combine wireless transmission mode with GPS synchronization in the existing data collection method are solved. It mainly includes a method for multiple sensor nodes to collect data synchronously at the same time, and a method for multiple sensor nodes to transmit synchronous data to a terminal through a wireless transmission network through WiFi. The acquisition method of the invention has simple steps, easy implementation and strong stability, and has very important significance in the technical field of structural health monitoring.

Description

technical field [0001] The invention belongs to the technical field of structural health monitoring, and specifically relates to a real data synchronization, low layout cost, simple acquisition method steps, stable and reliable acquisition method, modularized and simplified node circuit design, and high stable performance The data acquisition method of the signal synchronous acquisition system based on WiFi wireless and GPS timing. Background technique [0002] At present, in the data acquisition part of the structural health monitoring of large buildings, the distributed signal acquisition method is mostly based on wired sensor nodes, and basically uses the system clock to maintain the synchronization of data acquisition. Compared with this acquisition method based on wired equipment, it is very Obviously, the traditional collection method has the following disadvantages: wired sensor nodes limit the scope of data collection, and the manpower consumption is serious and inef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/38H04W84/18G08C17/02H04J3/06
CPCG08C17/02H04J3/0638H04W84/18H04W4/38
Inventor 谭荣龙许飞云陈启山江煜
Owner YMC PIEZOTRONICS
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