Monitoring System Performance

2011 ◽  
pp. 113-145
Author(s):  
Sam R. Alapati ◽  
Darl Kuhn ◽  
Bill Padfield
Keyword(s):  
Monitoring System ◽  
System Performance

scholarly journals Continuous IEQ monitoring system: Performance specifications and thermal comfort classification

2019 ◽  
Vol 149 ◽  
pp. 241-252 ◽  
Author(s):  
Thomas Parkinson ◽  
Alex Parkinson ◽  
Richard de Dear
Keyword(s):  
Thermal Comfort ◽  
Monitoring System ◽  
System Performance ◽  
Performance Specifications

Online Monitoring System for Stand-Alone Photovoltaic Applications—Analysis of System Performance From Monitored Data

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
M. Torres ◽  
F. J. Muñoz ◽  
J. V. Muñoz ◽  
C. Rus
Keyword(s):  
Performance Analysis ◽  
Real Time ◽  
Monitoring System ◽  
Virtual Instrument ◽  
System Performance ◽  
Online Monitoring ◽  
Research Centre ◽  
Photovoltaic Systems ◽  
System Monitoring ◽  
Online Monitoring System

The Guidelines for the Assessment of Photovoltaic Plants provided by the Joint Research Centre (JRC) and the International Standard IEC 61724 recommend procedures for the analysis of monitored data to asses the overall performance of photovoltaic (PV) systems. However, the latter do not provide a well adapted method for the analysis of stand-alone photovoltaic systems (SAPV) with charge regulators without maximum power point tracker (MPPT). In this way, the IDEA Research Group has developed a new method that improves the analysis performance of these kinds of systems. Moreover, it has been validated an expression that compromises simplicity and accuracy when estimating the array potential in this kind of systems. SAPV system monitoring and performance analysis from monitored data are of great interest to engineers both for detecting a system malfunction and for optimizing the design of future SAPV system. In this way, this paper introduces an online monitoring system in real time for SAPV applications where the monitored data are processed in order to provide an analysis of system performance. The latter, together with the monitored data, are displayed on a graphical user interface using a virtual instrument (VI) developed in LABVIEW®. Furthermore, the collected and monitored data can be shown in a website where an external user can see the daily evolution of all monitored and derived parameters. At present, three different SAPV systems, installed in the Polytechnic School of University of Jaén, are being monitorized and the collected data are being published online in real time. Moreover, a performance analysis of these stand-alone photovoltaic systems considering both IEC 61724 and the IDEA Method is also offered. These three systems use the charge regulators more widespread in the market. Systems #1 and #2 use pulse width modulation (PWM) charge regulators, (a series and a shunt regulator, respectively), meanwhile System #3 has a charge regulator with MPPT. This website provides a tool that can be used not only for educational purposes in order to illustrate the operation of this kind of systems but it can also show the scientific and engineering community the main features of the system performance analysis methods mentioned above. Furthermore, it allows an external user to download the monitored and analysis data to make its own offline analysis. These files comply with the format proposed in the standard IEC 61724. The SAPV system monitoring website is now available for public viewing on the University of Jaén. (http://voltio.ujaen.es/sfa/index.html).

scholarly journals Design and Analysis of Trash Monitoring System Prototype Based On Internet of Things (IoT) Using MQTT Protocol

2018 ◽  
Vol 10 (3) ◽  
pp. 113
Author(s):  
Achmad Auliyaa Zulfikri ◽  
Doan Perdana ◽  
Gustommy Bisono
Keyword(s):  
Internet Of Things ◽  
Monitoring System ◽  
System Performance ◽  
Performance Test ◽  
Advanced Technology ◽  
Android Application ◽  
Packet Delivery ◽  
End To End Delay ◽  
System Prototype ◽  
Maximum Limit

On this research,Internet of Things (IoT) as an advanced technology is used to monitor the height of trash from a trash can in order to give notification whether the height of trash is already reach the maximum limit or not yet.To support those needs,we used NodeMCU as microcontroller,ultrasonic sensor,MQTT as IoT protocol,and also Android application to show the data.After we did the system performance test,we got the biggest result of end-to-end delay which is 2.06875 seconds when the packet delivery is set to 1000 ms with 3 active nodes and the smallest result which is 0.26055 seconds when the packet delivery is set to 100 ms with 1 active mode.The biggest result of throughput is 597.17 Bytes/s when the packet delivery is set to 100 ms with 1 active mode and the smallest result is 75.86 Bytes/s when the packet delivery is set to 1000 ms with 3 active nodes.The biggest result of availability and reliability is 99.905% when the packet delivery is set to 1000 ms and the smallest result is 99.833% when the packet delivery is set to 100 ms.

The Study on Wireless Video Monitoring System Based on SOPC

2013 ◽  
Vol 340 ◽  
pp. 606-610
Author(s):  
Jian Ming Xu
Keyword(s):  
System Design ◽  
Monitoring System ◽  
System Performance ◽  
Infrared Imaging ◽  
Infrared Image ◽  
Processing System ◽  
Video Monitoring ◽  
Time Sampling ◽  
Wireless Video ◽  
Hardware And Software System

In order to investigate the system performance, its necessary to select an even background point target as the imaging object. The system realizes the real-time sampling, processing and displaying infrared image through joint debugging the SOPC processing system. SOPC is a flexible and effective SOC solution because of its flexibilities of system design, reduction, extension, upgrading, etc. And its hardware and software system are programmable. We present and develop a wireless video monitoring system based on SOPC in this paper, and the system benefits the production of infrared imaging sets of higher performance, lower power consumption and smaller size.

Experimental Study of the Performance Test for the Infusion Monitoring System

2013 ◽  
Vol 756-759 ◽  
pp. 407-410
Author(s):  
Zhi Hui Xu ◽  
Wei Zhong Li ◽  
Yong Jun Xiao
Keyword(s):  
Monitoring System ◽  
System Performance ◽  
Pid Controller ◽  
Performance Test ◽  
High Reliability ◽  
Fuzzy Pid ◽  
Time Consumption ◽  
Fuzzy Pid Controller ◽  
Manual Adjustment ◽  
Result Show

Comparison with conventional manual adjustment to control the drop speed in clinical infusion, the infusion monitoring system can achieve much more high reliability and efficiency, and is easy to realize the automation of infusion. So the infusion monitoring system has been designed in the last papers. To test the designed system performance, some experiments are done. And the result show that under requirement of the system precision, the time consumption increase with the incensement of speed difference value; Comparing to the conventional PID controller, the fuzzy-PID controller can achieve high precision and little stabilizing time consumption.

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