scholarly journals Design and analysis of a performance monitoring system for a seed metering device based on pulse width recognition

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261593
Author(s):  
Zhengyuan Liu ◽  
Junfang Xia ◽  
Mengjie Hu ◽  
Jun Du ◽  
Chengming Luo ◽  
...  
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Rotational Speed ◽  
Pulse Width ◽  
Performance Monitoring ◽  
Recognition Algorithm ◽  
Monitoring Accuracy ◽  
Cotton Seeds ◽  
Motion Characteristics ◽  
A Performance

To realize real-time and accurate performance monitoring of large- and medium-sized seed metering devices, a performance monitoring system was designed for seed metering devices based on LED visible photoelectric sensing technology and a pulse width recognition algorithm. Through an analysis of the of sensing component pointing characteristics and seed motion characteristics, the layout of the sensing components and critical photoelectric sensing system components was optimized. Single-grain seed metering devices were employed as monitoring objects, and the pulse width thresholds for Ekangmian-10 cotton seeds and Zhengdan-958 corn seeds were determined through pulse width threshold calibration experiments employed at different seed metering plate rotational speeds. According to the seeding quantity monitoring experiments, when the seed metering plate rotational speed ranged from 28.31~35.71 rev/min, the accuracy reached 98.41% for Ekangmian-10 cotton seeds. When the seed metering plate rotational speed ranged from 13.78~19.39 rev/min, the seeding quantity monitoring accuracy reached 98.19% for Zhengdan-958 corn seeds. Performance monitoring experiments revealed that the qualified seeding quantity monitoring accuracy of cotton precision seed metering devices, missed seeding quantity monitoring accuracy, and reseeding quantity monitoring accuracy could reach 98.75%, 94.06%, and 91.30%, respectively, within a seeding speed range of 8~9 km/h. This system meets the requirements of real-time performance monitoring of large- and medium-sized precision seed metering devices, which helps to improve the operational performance of seeding machines.

Compressor Computerized Performance Monitoring System CPMS

2021 ◽  
Author(s):  
Vadim Goryachikh ◽  
Fahad Alghamdi ◽  
Abdulrahman Takrouni
Keyword(s):  
Natural Gas ◽  
Real Time ◽  
Monitoring System ◽  
Performance Monitoring ◽  
Compressibility Factor ◽  
Background Information ◽  
Monitoring Systems ◽  
Turbo Expander ◽  
Time Calculation ◽  
Performance Deterioration

Abstract Background information Natural gas liquid (NGL) production facilities, typically, utilize turbo-expander-brake compressor (TE) to generate cold for C2+ separation from the natural gas by isentropic expansion of feed stream and use energy absorbed by expansion to compress residue gas. Experience shows that during operational phase TE can exposed to operation outside of design window that may lead to machine integrity loss and consequent impact on production. At the same time, there is a lack of performance indicators that help operator to monitor operating window of the machine and proactively identify performance deterioration. For instance, TE brake compressor side is always equipped with anti-surge protection system, including surge deviation alarms and trip. However, there is often gap in monitoring deviation from stonewall region. At the same time, in some of the designs (2×50% machines) likelihood of running brake compressor in stonewall is high during one machine trip or train start-up, turndown operating modes. Also, typical compressor performance monitoring systems does not have enough dynamic parameters that may indicate machine process process performance deterioration proactively (real-time calculation of actual polytrophic efficiency, absorbed power etc.) and help operator to take action before catastrophic failure occurs. In addition, typical compressor monitoring systems are based on assumed composition and fixed compressibility factor and do not reflect actual compositions variations that may affect machine performance monitoring. To overcome issues highlighted above, Hawiyah NGL (HNGL) team has developed computerized monitoring and advisory system to monitor the performance of turbo-expander-brake compressor, proactively, identify potentially unsafe conditions or performance deterioration and advice operators on taking necessary actions to avoid unscheduled deferment of production. Computerized performance monitoring system has been implemented in HNGL DCS (Yokogawa) and utilized by control room operators on day-to-day basis. Real-time calculation, analysis and outputs produced by performance monitoring system allow operator to understand how current operating condition are far from danger zone. Proactive deviation alarms and guide messages produce by the system in case of deviation help operators to control machine from entering unsafe region. Actual polytrophic efficiency, adsorbed power calculations provide machine condition status and allow identifying long-term performance deterioration trends.

Development of a real-time power system dynamic performance monitoring system

1997 ◽  
Vol 33 (4) ◽  
pp. 1055-1060 ◽  
Author(s):  
Wei-Jen Lee ◽  
Jae-Hyeon Gim ◽  
Mo-Shing Chen ◽  
Shih-Ping Wang ◽  
Ren-Jun Li
Keyword(s):  
Power System ◽  
Real Time ◽  
Monitoring System ◽  
Performance Monitoring ◽  
Dynamic Performance ◽  
System Dynamic

Real time facility performance monitoring system using RFID technology

2012 ◽  
Vol 32 (2) ◽  
pp. 185-196 ◽  
Author(s):  
Kuen‐Min Chen ◽  
Joseph C. Chen ◽  
Ronald A. Cox
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Performance Monitoring ◽  
Rfid Technology

Application of an Advanced Performance Monitoring System to Detect an Implanted Fault on a Twin Spool Aero Derived Gas Turbine

2002 ◽  
Author(s):  
A. M. Y. Razak ◽  
M. S. Dosanjh
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Gas Turbines ◽  
Performance Monitoring ◽  
Component Level ◽  
Satisfactory Performance ◽  
Engine Component ◽  
The Impact ◽  
Fuel Costs ◽  
A Performance

The profitability of industries that use gas turbines is very much dependent on the satisfactory performance of their engines. Deterioration in performance of engines, results in loss of power and thermal efficiency which together contributes to higher fuel costs, lower revenue and reduced profitability. The purpose of a performance monitoring system is to identify any faults developing at engine component level and the extent of the deterioration. (e.g. the extent to which compressor fouling has occurred). The ability of such a system to predict the impact on power available is also important. This paper discusses the application of a performance monitoring system in detecting an implanted fault in an actual gas turbine.

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