Vandal Glass Heat Distribution and the Effect of Glass Gap Adjustments in Outdoor Digital Display Components

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Jeho Kim ◽  
J. Michael Brown ◽  
Yogendra Joshi ◽  
Kevin O'Connor ◽  
Marcos Diaz ◽  
...  

Abstract The use of computational fluid dynamics/heat transfer (CFD/HT) software has become common in exploring the thermal and hydrodynamic behavior of many electronic products. Well-designed CFD/HT models are very valuable for driving the product design, but accurate models can be difficult to develop in some cases for a practical use. In CFD/HT modeling of outdoor digital displays, both the surrounding ambient temperature and solar irradiance are the major contributors to temperature rise, but most software packages are limited in simulating solar irradiance through semitransparent materials and multiple surfaces. In this study, a methodology to replace the solar irradiance with a power that should be imposed on the sun-exposed exterior glass (vandal glass) is described. As outdoor digital displays face harsher thermal challenges compared to the displays that are deployed indoors, it is necessary to come up with a display design that can best benefit from the cooling effect. There are numerous parameters that can be adjusted to optimize the display in terms of its thermal performance but in particular, this study explores the effect of adjusting the gap distance between the vandal glass and the liquid crystal display (LCD) to see how the maximum LCD temperature and fan performance are influenced.

Author(s):  
Jeho Kim ◽  
J. Michael Brown ◽  
Yogendra Joshi ◽  
Kevin O’Connor ◽  
Marcos Diaz ◽  
...  

Abstract The use of computational fluid dynamics/heat transfer (CFD/HT) software has become common in exploring the thermal and hydrodynamic behavior of many electronic products. Well-designed CFD/HT models are very valuable for driving the product design, but accurate models can be difficult to develop in some cases for a practical use. Manufacturing Resources International (MRI) uses CFD/HT modeling to predict the display limitations of outdoor digital displays under various hazardous environmental conditions. Both the surrounding ambient temperature and solar irradiance are the major contributors to temperature rise inside outdoor digital displays, but most CFD/HT software packages are limited in simulating solar irradiance through semi-transparent materials and multiple surfaces. Therefore, the contribution from solar irradiance must be treated with care when creating a CFD/HT model especially when an optimum number of mesh elements is to be used to minimize the necessary processing power and solution computation time. In the current study, we employ true solar testing to determine how much solar irradiance passes through the vandal glass assembly. In lieu of defining the solar irradiance as a heat flux, a methodology to determine the power that should be imposed on the sun-exposed vandal glass is described. As outdoor digital displays face harsher thermal challenges compared to the displays that are deployed indoors, it is necessary to come up with a display design that can best benefit from the cooling effect. There are numerous parameters that can be adjusted to optimize the display in terms of its thermal performance but in particular, this paper explores the effect of adjusting the gap distance between the vandal glass and the liquid crystal display (LCD) to see how the maximum LCD temperature and fan performance are influenced.


2015 ◽  
Vol 738-739 ◽  
pp. 184-187
Author(s):  
Qing Fang Zhou ◽  
Jun Yang

Liquid crystal display (LCD) is one of the most dynamic electronic products in this century. It has been recognized as a key component of media era, since it has many characteristics, such as a low operating voltage, light volume, and excellent performance of full color display, and suitable for LSI drive and the like. In order to break the limitations of LCD, improve its animation display performance as multimedia television monitor, and strongly simplify the manufacturing to ensure the competitiveness on price, we designed a LCD module with the liquid crystal cell of TD-EDA experimental system based on FPGA, and achieved the control of LCD with hardware description language VHDL in this paper. The validation results of compiled program downloaded on programmable logic devices after compiling and simulating show that the LCD we designed can run correctly and relatively perfectly.


Author(s):  
Sumeet Gupta ◽  
Tushar Agrawal ◽  
Priyanka Jain ◽  
Dolly Jaisinghani ◽  
Ritika Rathi

This chapter presents several case studies of the multilayered system in India and shows how the prevalent distribution system preclude any means of cost reduction and making these supply chains efficient. Supply chains of perishable goods, electronic products, FMCG products and Pharmaceutical products are discussed in this chapter. Each of these supply chains present unique challenges and issues that need attention. The three main objectives in these studies are to understand the distribution systems as well as cost economics of the supply chains, identify potential conflicts and issues in their distribution system, and to study the effect of macro-environment on the distribution system. Apart from these objectives, these cases are also meant to prepare those venturing into such supply chains to come up with efficient solutions for improving these supply chains.


2017 ◽  
Vol 372 (1720) ◽  
pp. 20150512 ◽  
Author(s):  
Alexandre C. Dufour ◽  
Anneliene H. Jonker ◽  
Jean-Christophe Olivo-Marin

In recent years developmental biology has greatly benefited from the latest advances in fluorescence microscopy techniques. Consequently, quantitative and automated analysis of this data is becoming a vital first step in the quest for novel insights into the various aspects of development. Here we present an introductory overview of the various image analysis methods proposed for developmental biology images, with particular attention to openly available software packages. These tools, as well as others to come, are rapidly paving the way towards standardized and reproducible bioimaging studies at the whole-tissue level. Reflecting on these achievements, we discuss the remaining challenges and the future endeavours lying ahead in the post–image analysis era. This article is part of the themed issue ‘Systems morphodynamics: understanding the development of tissue hardware’.


AVIA ◽  
2021 ◽  
Vol 3 (1) ◽  
Author(s):  
A R Pandie ◽  
A V Kirillov

The objectives of this research are: to know the concept of modeling and simulation the cockpit display based on disadvantages and differences between A320 and B737NG; to offer the development and new technology to design the development (new) flight instruments of the display based on Airbus A320 and Boeing B737 NG flight instrument technology. Methodologies that have been used in this research are literature review, interview/discussion/questionnaire, and descriptive analysis. Questionnaire towards the users/pilots who flies airplane A320 or B737 NG. For the questionnaire, the Likert-scale method is utilized to collect data and information. This research result’s in finding that: 1. the technology of flight instrument system between A320 and B737 NG visually displays similarity with several differences such as ergonomic side, ECAM technology, and VSD technology. 2. Based on works of literature review and response from the users/pilots, the author finds and proposes several technologies or requirements to apply in the new type model of PFD and Multi-function Display, they are including: PFD and MFD merged into one display only with some additional menu buttons; ECAM + engine warning display, ECAM + systems display, and digital instruction to solve the problem merged into one display only with some additional buttons; display design is using the fully digital display, computerized system, LCD technology, VSD, and EHSI technology, and layout display is using configuration “basic T”; standby flight instrument merged into one display only with some additional menu buttons


2013 ◽  
Vol 711 ◽  
pp. 598-601
Author(s):  
Juan He ◽  
Song Yue Yuan

The single chip microcomputer with digital clock has been designed based on AT89C52, through the design ideas of multi-function digital clock, we have described the system hardware, software and the realization process.The display design and implementation of a year, month, day, time and second is achieved using C language. And the simulation is used by Proteus software. By comparing the actual clock, we have found out the source of the error and have determined the method of adjusting error, and we reduce the error as much as possible, so we can achieve the allowable error range for a practical digital clock in this system.


2020 ◽  
Vol 9 (2) ◽  
pp. 281
Author(s):  
Sarwindah Sarwindah ◽  
Elly Yanuarti

While the development of information technology is very influential for the progress of a business, promoting a business that is owned, then one of them by using an ecommerce website. E-commerce is a trading activity carried out online through a website. Problems in electronic adjunct stores Stores still use a conventional system where if a buyer wants to buy the desired item, the buyer must come directly to the store and this condition makes marketing and sales hampered by distance and time. In addition, the promotion at Arjun Electronics Store has not been fully implemented properly because it is only done by directly informing buyers who come to the shop. the purpose of this research is to produce a system that can provide ease of introducing products in the electronic adjuncts and sell all electronic products for household needs. With e-commerce site that is able to provide information about goods to customers quickly through internet network technology. Where asthe FAST method is a fairly flexible framework for various types of projects and strategies. System development with the FAST method is carried out sequentially which includes the stages of scope definition, problem analysis, needs analysis, logical design, decision analysis, physical design and integration, construction and testing, insralation and delivery, The results of this study in the form of website-based e-commerce optimization. With this website, stores can expand marketing, consumers become easier to get information about goods without having to come to the Electronic Adjunct Store and with the (e-commerce), the store can facilitate the conventional transaction process that has been conventional to be modern and can certainly make it easier to create sales reports that were previously still manual.


Author(s):  
Sumeet Gupta ◽  
Tushar Agrawal ◽  
Priyanka Jain ◽  
Dolly Jaisinghani ◽  
Ritika Rathi

This chapter presents several case studies of the multilayered system in India and shows how the prevalent distribution system preclude any means of cost reduction and making these supply chains efficient. Supply chains of perishable goods, electronic products, FMCG products and Pharmaceutical products are discussed in this chapter. Each of these supply chains present unique challenges and issues that need attention. The three main objectives in these studies are to understand the distribution systems as well as cost economics of the supply chains, identify potential conflicts and issues in their distribution system, and to study the effect of macro-environment on the distribution system. Apart from these objectives, these cases are also meant to prepare those venturing into such supply chains to come up with efficient solutions for improving these supply chains.


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