Research on Multi-Parameter Measure and Control Technology Based on Wireless Communication in Combined Environment Testing

2010 ◽  
Vol 139-141 ◽  
pp. 2207-2211 ◽  
Author(s):  
Yuan Lai Zhou ◽  
Wen He ◽  
Run Jie Shen ◽  
Min Liu
Keyword(s):  
Control System ◽  
Wireless Communication ◽  
Communication Technology ◽  
Dynamic Balance ◽  
Wireless Transmission ◽  
Pressure System ◽  
Computer Communication ◽  
Balance System ◽  
Measure And Control System ◽  
And Control

Considering the requirement of the multi-parameter-combined environment testing device, a kind of multi-parameter measure and control system based on wireless communication technology was studied in this paper. First, the overall structure of the multi-parameter measure and control system based on wireless communication in combined environment device was put forward, which was made up of six control subsystems: a host computer, the centrifuge and dynamic balance system, the vibration and rectification system, the temperature system, the air pressure system and the sound pressure system. Then, the communication protocol and hardware structure of the multi-computer communication system based on wireless transmission were mainly studied. And software design technology of multi-parameter measure and control system was studied in succession. Finally, the five-parameter-combined environment testing was carried out. The experimental results show that the measure and control tasks of the combined environment testing can be well finished by the multi-parameter measure and control system.

scholarly journals An Adaptive Differential Protection and Fast Auto-Closing System for 10 kV Distribution Networks Based on 4G LTE Wireless Communication

2019 ◽  
Vol 12 (1) ◽  
pp. 2 ◽  
Author(s):  
Wen An ◽  
Jun Jie Ma ◽  
Hong Yang Zhou ◽  
Hong Shan Chen ◽  
Xu Jun ◽  
...  
Keyword(s):  
Control System ◽  
Wireless Communication ◽  
Power System ◽  
Power Supply ◽  
Distribution Networks ◽  
Fault Isolation ◽  
Differential Protection ◽  
Current Differential Protection ◽  
Protection And Control ◽  
And Control

With the development of wireless communication technology and computer technology, more and more smart technologies have been applied in electricity distribution networks. This paper presents an adaptive current differential protection and fast auto-closing system for application in 10 kV distribution networks in China Southern Power Grid. The current differential protection can adaptively change its settings according to the topology change of the primary distribution networks, thus the system effectively reduces the operation and maintenance cost of the power distribution network. In order to restore the power supply for the healthy part of the 10 kV networks quickly after a power system fault is cleared, the protection and control system provides wide area control function for automatic fault isolation and automatic switching. The traditional overcurrent protection and control system have no fault location function, it may take several minutes or even hours to manually locate a fault and then restore the power supply. Compared with the protection and control system of the traditional 10 kV distribution networks, the system developed can locate and isolate faults within 900 ms (assuming that the operating time of the load switch is 700 ms), and can quickly restore power supply in less than one second after a power system fault is cleared.

Design of Measure and Control System of the Ring Block Casing Wear Tester

2013 ◽  
Vol 423-426 ◽  
pp. 2414-2418
Author(s):  
Xiang Tong Yang ◽  
Xiao Zeng Wang ◽  
Yin Ping Cao ◽  
Yi Hua Dou
Keyword(s):  
Control System ◽  
Calibration Method ◽  
Contact Forces ◽  
Wear Depth ◽  
Friction Forces ◽  
Deep Wells ◽  
Geological Conditions ◽  
Casing Wear ◽  
Measure And Control System ◽  
And Control

In deep wells and ultra-deep wells the complex geological conditions often result in serious casing wear. In order to obtain the wear efficiency which is used to compute the wear depth of downhole casing, the ring block drillpipe casing wear tester is developed. The measure and control system which include the measure circuits of contact forces between casing and drillpipe samples, the measure circuits of the friction forces are main component of wear tester. It is very important to design the measure and control system of tester. The paper also develops the calibration method of the loads sensors used to measure the contact and friction force. The wear tester can accurately measure the wear efficiency and the friction coefficient needed by casing wear prediction.

Cylinder Micro Leakage Testing System

2013 ◽  
Vol 694-697 ◽  
pp. 1291-1295
Author(s):  
Jia Yu Dai ◽  
Ke Li Xing ◽  
Bing Hui Xu
Keyword(s):  
Control System ◽  
Testing System ◽  
Software System ◽  
Analysis Method ◽  
Hardware System ◽  
Measure And Control System ◽  
And Control ◽  
Testing Efficiency

In order to improve the testing efficiency of the cylinder leakage, a measure and control system based on LabVIEW is put forwards into application. This paper introduces a method of cylinder leakage calculation and proposes a cylinder leakage standard curves analysis method, and designs the hardware system mainly using the Mitsubishi PLC and the Art USB5935 acquisition card and the software system based on LabVIEW.

Monitoring System of Greenhouse Based on GPRS Wireless Communication Technology

2013 ◽  
Vol 364 ◽  
pp. 424-428
Author(s):  
Min Jing Liu ◽  
Xue Ren Dong ◽  
Yu Zhen Ma
Keyword(s):  
Wireless Communication ◽  
Monitoring System ◽  
Communication Technology ◽  
Agricultural Production ◽  
Agricultural Development ◽  
Environment Monitoring ◽  
Working Process ◽  
Control Terminal ◽  
And Control ◽  
Data Terminal

With the development of wireless communication technology and mechanical technology, the combination application of the two technologies to agricultural production has become the inevitable trend of agricultural development. Using Nx5883 wireless remote control terminal, a greenhouse environment monitoring system based on GPRS has been designed. It introduces the composition of hardware and working process of the system. The system can monitor the change of temperature and humidity in environment and soil, soil’s PH, and illumination timely. It transmits the signals and dates to the data terminal though wireless network, then the terminal can make the corresponding feedback. This system can real-time monitor and control the greenhouse environment.

Quality Measure and Control System for the Whole Process of Arc Welding

2008 ◽  
Vol 575-578 ◽  
pp. 722-727
Author(s):  
Zhi Yong Li ◽  
Bao Wang ◽  
Jing Bin Ding
Keyword(s):  
Quality Control ◽  
Control System ◽  
Welding Process ◽  
Quality Measure ◽  
Welding Quality ◽  
Welding Material ◽  
Whole Process ◽  
Metallurgical Structure ◽  
Measure And Control System ◽  
And Control

Welding quality control is critical for welding manufacturing. However, the factors that affect welding quality exist in the whole welding process. Whole process welding quality control is a technology control process that can control the welding quality from choice of the welding material, stability of the welding process and quality assurance after welding. In this paper, a quality measure and control system is developed. The system is consisted of three modules: Technology property evaluation and welding material choice module is based on Analysator Hannover. This module can evaluate three type of welding material: electrode, solid welding wire and flux-cored wire. The welding process stability evaluation module can collect electrical and light spectral signal for disturbance factors diagnosis during the welding. The metallurgical structure and property forecasting module call the CCT diagram data base for predicting he metallurgical structure and mechanical property of the weld affected zone and weld metal. For stainless steel, a predicting method based on Schaeffer is also provided in this module.

Application of Wireless Communication in Multi-Channel Temperature Control System

2013 ◽  
Vol 397-400 ◽  
pp. 1918-1922
Author(s):  
Li Mei Wen
Keyword(s):  
Wireless Communication ◽  
Communication Technology ◽  
Temperature Sensor ◽  
Low Cost ◽  
Wireless Transmission ◽  
Temperature Control System ◽  
Communications Technology ◽  
Channel Temperature ◽  
Wireless Module ◽  
Wired Communication

In the technology of temperature measurement, the sensor is an important part of system. But with the increase of the number of sensors, it will undoubtedly bring with a lot of data cable. Compared with wired communication technology, wireless communications technology has the advantages of low cost, simple structures, low impact of environment. So the wireless communication technology meeting with the requirements of data communications has become a more practical, fast and efficient way. This paper describes a multi-channel temperature monitoring system using nRF905 wireless transmission module, STC89C52RC MCU and DS18B20 temperature sensor as core. Functions such as sampling, analysis, display, alarm and others can be done automatically by the system, dates transmitted by wireless module, and the system can realize the function of real-time monitoring of temperature.

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