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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

771
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
771
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

454
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
454

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相关实验视频

Updated: May 5, 2026

An Instrumented Pull Test to Characterize Postural Responses
12:18

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分布式IMU传感器用于阿尔卑斯山滑雪上的现场动态测量.

Leopold G Beuken1, Joshua L Priest1, Travis Hainsworth2

  • 1Paul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309, USA.

Sensors (Basel, Switzerland)
|March 28, 2024
PubMed
概括

这项研究引入了一种新的模块化滑雪传感器系统,使用分布式惯性测量单元 (IMU) 来收集准确的性能数据. 这项创新旨在通过提供客观,高速率的数据来改善滑雪设计和消费者选择.

关键词:
卡尔曼过器可以过.分布式传感器的分布式传感器.惯性测量单位是惯性测量单位.在户外测试中进行测试.滑雪的设计和评估和评价.

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相关实验视频

Last Updated: May 5, 2026

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12:18

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Published on: April 6, 2019

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科学领域:

  • 运动工程 运动工程
  • 生物力学 生物力学
  • 材料科学 材料科学 材料科学

背景情况:

  • 滑雪设计依赖于耗时,代的反循环,涉及设计,制造和定性现场评估.
  • 消费者滑雪的选择往往是不一致的和昂贵的,因为依赖主观的定性评估和滑雪者的风格的变化.

研究的目的:

  • 提出一种新的方法,以客观的现场数据来补充滑雪设计和评估过程.
  • 引入滑雪的模块化传感器阵列,以捕获性能特征.

主要方法:

  • 开发了一套用于滑雪的分布式惯性测量单位 (IMU) 套件.
  • 在滑雪的上面实施空间分布的IMU.
  • 在冬季条件下进行验证实验和户外实地测试.

主要成果:

  • 开发的IMU系统提供准确,高频率 (>700Hz) 的数据.
  • 该系统可以测量结构和刚性滑雪特征.
  • 传感器套件在重复的户外冬季测试中表现出了稳健性.

结论:

  • 拟议的IMU系统为客观地测量滑雪表现提供了一个可行的解决方案.
  • 这项技术可以增强滑雪设计和评估过程.
  • 它有可能改善消费者选择滑雪的体验.