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Surveys

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Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.

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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

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Published on: September 8, 2023

An Integrated Energy-Efficient Wireless Sensor Node for the Microtremor Survey Method.

Ruyun Tian^1,2, Longxu Wang^3,4, Xiaohua Zhou^5,6

¹College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China. tianry18@mails.jlu.edu.cn.

Sensors (Basel, Switzerland)

|January 31, 2019

Summary

A new wireless sensor node enhances microtremor survey methods (MSM) by improving data accuracy and efficiency. This energy-efficient system overcomes limitations of existing equipment for better geological structure identification.

Keywords:

4G wireless monitoring system ambient-noise measurement energy-efficient microtremor survey method strata velocity structure

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Published on: August 27, 2021

Area of Science:

Geophysics
Earth Science
Sensor Technology

Background:

Microtremor survey method (MSM) is crucial for geophysical exploration of strata velocity and buried faults.
Existing equipment for MSM faces challenges like low data accuracy, extended measurement times, and inefficient acquisition.

Purpose of the Study:

To develop an integrated, energy-efficient wireless sensor node for microtremor exploration.
To address the limitations of current microtremor exploration equipment.

Main Methods:

Integration of a 2 Hz moving coil geophone with advanced acquisition systems.
Implementation of a low-noise design using a high-precision AD chip and noise matching technology.
Development of an energy-efficient mode with dynamic frequency selection (DFS) and dynamic power management (DPM).
Incorporation of a 4G wireless monitoring system for real-time data quality control.

Main Results:

The developed sensor node achieved a noise level of 0.7 μV@500 Hz with 0 dB attenuation.
The system demonstrated low power consumption (220 mW) in autonomous data acquisition mode.
Field measurements confirmed the system's convenience and effectiveness for MSM.

Conclusions:

The new integrated energy-efficient wireless sensor node significantly improves data acquisition for microtremor exploration.
The system provides substantial support for long-duration measurements, enhancing geological structure identification.
The developed technology offers a convenient and effective solution for the limitations of current MSM equipment.