scholarly journals Research on Measurement and Control System of Common Parameters of Agricultural Equipment Based on Wireless Transmission

2021 ◽  
Vol 12 (2) ◽  
pp. 73-86
Author(s):  
Fan Wu ◽  
Aiqin Li ◽  
Saihua He ◽  
Mohammad Ikbal ◽  
Mohamed A. Sharaf Eldean
Keyword(s):  
Control System ◽  
Virtual Instrument ◽  
Wireless Transmission ◽  
Channel Measurements ◽  
Measurement And Control System ◽  
Agricultural Equipment ◽  
Agricultural Use ◽  
And Control ◽  
Measurement And Control

To resolve the limited transmission and complicated layout, the common parameter measurement and control system of agricultural equipment use virtual instrument technology and embedded technology. The research results show that the wireless transmission data of the system is accurate and reliable. The linearity errors of acquisition divestiture (AD) and frequency counting (FI) channel measurements are only 0.38% and 0.006%, respectively, and the resolution is 0.01V and 1 Hz. This performance evaluation fully meets equipment detection in agricultural use. The system is integrated with various wireless transmission platforms, intelligent agricultural equipment, and computer wireless reception and processing. These parameters can significantly improve the automation level and quality of agricultural equipment.

Software System Development of Measurement and Control System for a Nonlinear Absorber by Virtual Instrument

2011 ◽  
Vol 188 ◽  
pp. 236-240
Author(s):  
Cong Ling Zhu ◽  
Wei Zhu Jin ◽  
D.R. Ci ◽  
Zhi Gang Ding ◽  
S.T. Wu
Keyword(s):  
Control System ◽  
Virtual Instrument ◽  
System Development ◽  
System Structure ◽  
Software System ◽  
Measurement And Control System ◽  
Nonlinear Absorber ◽  
New Development ◽  
And Control ◽  
Measurement And Control

Measurement and control system is the key equipment for testing and analyzing of the dynamic characteristics for a nonlinear absorber.It is the necessary means of accomplishing to design the rationalization of the nonlinear absorber. This article has conducted the detailed research in the new development of absorber test equipment to the desing of system structure, The constituent of software system, and The process design, and The development of the computer program based on virtual techniques. Debugging and running this software system have shown that the precision and reliability of it have been proved.

Design of Measurement and Control System for the Rail Fastening Spring Clip Type A and B

2011 ◽  
Vol 299-300 ◽  
pp. 1194-1197
Author(s):  
Yu Peng Yao ◽  
Ying Shi ◽  
Yong Ping Song
Keyword(s):  
Control System ◽  
Geometric Parameter ◽  
Type A ◽  
Geometric Parameters ◽  
Measuring Instrument ◽  
Measurement And Control System ◽  
And Control ◽  
Measurement And Control

The measurement and control system is designed to control the measuring instrument which measures the geometric parameters of rail fastening spring clips. The structure and work principle of the measurement and control system are presented. Nine geometric parameters of a rail fastening spring clip which is installed only one time can be measured atomically. The limited errors of measured parameters are largely smaller than one tenth of the geometric parameter tolerance. It only spends 40 seconds to measure a rail fastening spring clip. It improves the quality of the rail fastening spring clip production and ensures that it is safe and reliably used in railway.

An Implementation of Petri Net Based on Graphical Programming Language

2011 ◽  
Vol 464 ◽  
pp. 327-331 ◽  
Author(s):  
Tian Yan Du ◽  
De An Zhao ◽  
Li Huang
Keyword(s):  
Control System ◽  
Petri Nets ◽  
Programming Language ◽  
Petri Net ◽  
Virtual Instrument ◽  
Measurement And Control System ◽  
Graphical Programming ◽  
And Control ◽  
Measurement And Control ◽  
Graphical Programming Language

This paper deals with an implementation method of component-based Petri nets system based on a graphical programming language (LabVIEW). LabVIEW is not only a graphical programming language, but also a virtual instrument platform which is widely used in virtual measurement and control system. The Places (token number) of Petri nets are represented by Numeric Controls of LabVIEW. The Transitions of Petri nets are represented by subVIs of LabVIEW. Transition subVI will change the tokens of Places by the Numeric Controls' Reference when it is fired. This method will make it ease to implement a Petri net by simply combining Place and Transition components (subVI). The example implementing a special Petri net shows that the Front Panel of the controller reflects the system operating state directly; the Block Diagram is similar to the topology of original Petri net. The combination of two graphic languages makes the modeling, analysis and formal verification of measurement and control system based on Petri nets easier.

Measurement and Control System for Analysis of the Operation of the Stepper Motor

2017 ◽  
Vol 260 ◽  
pp. 113-126 ◽  
Author(s):  
Roland Pawliczek ◽  
Piotr Soppa
Keyword(s):  
Control System ◽  
Measurement System ◽  
Virtual Instrument ◽  
Stepper Motor ◽  
Measurement And Control System ◽  
Extended Analysis ◽  
Motor Operation ◽  
And Control ◽  
Measurement And Control ◽  
Step Control

The paper describes a control and measurement system for controlling and analysing operation of a stepper motor. The system design is based on the concept of virtual instrument, where data acquisition and transmission use standard solutions, whereas software serves both as a generator and a measurement system – an oscilloscope. The generator allows efficient control of motor operation in the following control modes: wave, full-step and half-step control. There were no winding powering sequence errors observed. The measurement system allows presenting and analysing voltage waveforms in individual windings with possibility to detect couplings and overvoltages. It was also shown that it is possible to detect locking of rotor rotation.The proposed virtual instruments have open structure, which enables extended analysis based on available measurements or expand range of measurements as long as measurement and control system instrumentation allows that.

Design and Simulation of Measurement and Control System for Silage Cylindrical Baler Based on LabVIEW

2013 ◽  
Vol 385-386 ◽  
pp. 478-483
Author(s):  
Li Hua Zhang ◽  
Guang Hui Li ◽  
Jiang Wei Zhao ◽  
Bin Li
Keyword(s):  
Control System ◽  
Power Consumption ◽  
Virtual Instrument ◽  
Frequency Converter ◽  
Asynchronous Motor ◽  
Motor Speed ◽  
Compression Pressure ◽  
Measurement And Control System ◽  
And Control ◽  
Measurement And Control

In order to study grasss rotary compression characteristics during round bundle process, measurement and control system for silage cylindrical baler was developed in this paper based on virtual instrument technology. The system was constituted of KM520-B silage cylindrical baler, three-phase asynchronous motor, frequency converter, sensors, data acquisition card, the LabVIEW software platform, and so on. This system can be used to acquire information such as forming chambers rotary compression pressure, motors input torque and motors power consumption. By controlling the motors input rotate speed, this paper studied the motor speed, the grass moisture content and the grass bale densitys influence on compression power consumption, grass bale forming quality and forming chambers rotary compression pressure. At the same time, this paper established simulation equipment using MAX of NI Corporation to check the built measurement and control system. The results proved that the system can well complete the set of functions.

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