The Study of Wireless Measurement System for Neuro-Motor Reaction Time

2012 ◽  
Vol 472-475 ◽  
pp. 2850-2853
Author(s):  
Shu Gang Li ◽  
Zhi Wu Zhu ◽  
Fei Shen
Keyword(s):  
Reaction Time ◽  
Measurement System ◽  
Data Transmission ◽  
Wireless Data ◽  
Measurement Device ◽  
The Core ◽  
Front End ◽  
Wireless Data Transmission ◽  
Reaction Time Measurement ◽  
Wireless Measurement

The purpose of this study was to introduce the design and realization about a measurement system, which is based by accelerometer ADXLl05 and wireless data-transmission module for starting line of athlete’s reaction time. This system plotted curves of players’ reaction time using 89C205l as the core of the front-end of the system reaction time measurement device, the measurement device take real-time captures players' reaction time, and then sent over the wireless data-transmission module player reaction time to the PC machine to display, and to record the reaction time.

Research and Design of Online Measuring Temperature Device for Switch Contacts of Switch Cabinet

2014 ◽  
Vol 536-537 ◽  
pp. 1514-1517 ◽  
Author(s):  
Qing Ye ◽  
De Gui Ji ◽  
Ting Wu Yan ◽  
Jin Ning Shan ◽  
Yu Peng Wang
Keyword(s):  
High Voltage ◽  
Data Transmission ◽  
Burn Injury ◽  
Wireless Data ◽  
Field Coupling ◽  
Wireless Data Transmission ◽  
Wireless Measurement ◽  
Switch Temperature ◽  
Magnetic Field Coupling ◽  
Research And Design

In order to detect switch contact temperature of high voltage switch cabinet in the operation of the cabinet, this paper puts forward a wireless measurement way to solve the measuring temperature problem of high voltage switch of the switch contact using magnetic field coupling idea. The temperature danger can be achieved in time to reduce switch burn injury. The device is mainly composed of temperature acquisition part and temperature display part. The two parts are connected by wireless data transmission. By test determination, the method is accurate and convenient to measure the temperature of the switch contact and then completely eliminate major accidents caused by switch temperature rise.

Improvement and Experiment for Online Measurement of Droplet Mass Deposit

2021 ◽  
Vol 64 (4) ◽  
pp. 1345-1354
Author(s):  
Chengda Sun ◽  
Weimin Ding ◽  
Changding Liu ◽  
Weifeng Yao ◽  
Lilian Shi
Keyword(s):  
Relative Error ◽  
Data Transmission ◽  
Online Measurement ◽  
Tracer Method ◽  
Wireless Data ◽  
Measurement Device ◽  
Wireless Data Transmission ◽  
Data Transmission System ◽  
Measurement Devices ◽  
Original Device

HighlightsA measurement device for droplet mass deposit was improved to enhance its performance.A wireless data transmission system was used to achieve convenient data sharing.A user interface was designed for display and analysis of the measurement results.A positioning mechanism was designed for arranging measurement devices promptly.Abstract. Measurement of droplet mass deposit is important in spray research and spray performance evaluation. In this article, an online measurement device for droplet mass deposit was improved based on the original design. The measurement resolution, precision, and data stability were improved by optimization of the structure and components and by data filtering. The resolution reached 0.00067 mg cm-2. Comparison tests showed that the relative error between the original device and an analytical balance was 6.68% to 8.48%, and the relative error between the improved device and the analytical balance was 5.24% to 6.15%. Compared with the original device, the relative error decreased and the precision improved. The relative error between the improved device and a tracer method was 5.11% to 6.99%, and the precision of the improved device was close to that of the tracer method. A positioning mechanism was designed to arrange measurement devices promptly in the test area, and a wireless data transmission system was used to achieve convenient data sharing. A user interface was designed to display the results in the form of tables and contour maps. Tests were conducted to measure the droplet mass deposit distribution of one nozzle, the droplet mass deposit distribution in a tree canopy, and the uniformity of the droplet mass deposit distribution in a small horizontal area. The results showed that the improved measurement device could provide data promptly and conveniently for spray research and spray performance evaluation. Keywords: Device improvement, Mass distribution, Wireless communication.

The Design for Remote Wireless LED Display Based on ARM

2013 ◽  
Vol 785-786 ◽  
pp. 1564-1567
Author(s):  
Fei Qiao Xiong ◽  
Bang Qian Ao
Keyword(s):  
Data Transmission ◽  
Dynamic Features ◽  
Wireless Data ◽  
Real Time Operating System ◽  
The Core ◽  
Full Color ◽  
Wireless Control ◽  
Wireless Data Transmission ◽  
Arm Microprocessor ◽  
Data Refresh

In this paper, we design a full color LED display remote wireless control system, which based on the ARM microprocessor for embedded real-time operating system technology, and combine with the wireless WiFi broadband for wireless data transmission. The system uses the ARM microprocessor as the core and the device of FPGA. It can transport and update wireless data、refresh dynamic features、scan the display with cyclic and so on. It can achieves remote wireless control of LED display.

Research on the Character of a Synchronous Control System with Wireless Data Communication

2010 ◽  
Vol 455 ◽  
pp. 206-210
Author(s):  
Jun Li Liu ◽  
Yan Yan Yan ◽  
G.Q. He
Keyword(s):  
Control System ◽  
Time Delay ◽  
Data Transmission ◽  
Data Communication ◽  
Control Model ◽  
Data Loss ◽  
Wireless Data ◽  
Synchronous Control ◽  
Wireless Data Transmission ◽  
Set Up

It discusses the reasons of the data transmission time delay and packets loss based on the theory of net data transmission. Aimed to the question of the time delay of data transmission and packets loss, the control system models are set up to analyze their influence to the performance of the control system. Based on the synchronous control model analysis with wireless data transmission, a method to control the system is reached with the state prediction when the communication error or data loss appears. It can control constantly when communication errors appear, and also it can get the most error period by numerical analysis.

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