Carrol Touch Modular Flat Panel, Mounting And Environments Manual

Page 1: ...CARROLL TOUCH TOUCH PRODUCTS an company AMP Modular Flat Panel Mounting and Environments Guide ...

Page 2: ...Modular Flat Panel Mounting and Environments Guide CARROLL TOUCH TOUCH PRODUCTS an AMP company November 1996 Modular Flat Panel Mounting and Environments Guide ...

Page 3: ...quipment at any time without notice Carroll Touch has made every attempt to ensure that the information in this document is accurate and complete Carroll Touch assumes no liability for any damages that result from the use of this manual or the equipment it documents Carroll Touch reserves the right to make changes to this document at any time without notice Trademarks All brand and product names a...

Page 4: ... 4 Chemicals 1 4 Moisture 1 4 Ambient Light 1 5 Particulates 1 6 Application Environments 1 6 2 Mounting Techniques 2 1 Simplest Mounting Method 2 2 Typical NEMA4 Mounting Method 2 3 Anti Shock Vibration Mounting Method 2 5 Industrial or Medical Mounting Method 2 6 3 Bezel Filter Assembly 3 1 Component Materials 3 2 Polycarbonate Chemical Resistance 3 2 4 Sealing and Coating 4 1 Sealing 4 2 Coatin...

Page 5: ...mplest Mounting Method Side View 2 3 Figure 2 3 Typical NEMA4 Mounting Method Front View 2 4 Figure 2 4 Typical NEMA4 Mounting Method Side View 2 5 Figure 2 5 Anti Shock Vibration Mounting Method 2 6 Figure 2 6 Industrial or Medical Mounting Method 2 7 Figure 4 1 Modular Flat Panel Touch System Sealing 4 2 List of Tables Table 1 1 Environmental Light Strengths 1 5 Table 1 2 Application Operating E...

Page 6: ...casual user because its simple natural interface hides the complexity of computer systems The modular flat panel touch system is especially well suited to rugged environments such as industrial settings where exposure to chemicals is likely medical settings where the system must be scrubbed after every use and public settings such as kiosks that subject the system to repeated possibly abusive use ...

Page 7: ...ent The mounting methods include simple typical NEMA 4 anti shock vibration and industrial medical Chapter 3 Bezel Filter Assembly shows the modular flat panel bezel and filter and its standard manufacturing material along with its chemical properties Chapter 4 Sealing and Coating discusses the concept of sealing along with an explanation of how to seal the modular flat panel touch system The conc...

Page 8: ...ed touch systems and describes the environmental factors that affect touch such as temperature shock and vibration chemicals moisture ambient light and particulates A brief analysis of the environmental factors present in various locations is also included The topics covered include Technological Overview Environmental Factors Application Environments T ...

Page 9: ...xis and a vertical y axis array of beams The two arrays of beams and their circuitry make up an opto matrix frame as shown in Figure 1 1 Figure 1 1 Scanning Infrared Technology As shown in Figure 1 2 a Carroll Touch modular touch frame designed to function with a flat panel is composed of an opto matrix frame an IR transparent protective bezel and a transparent filter To complete the touch system ...

Page 10: ...salignment or degradation of the opto electronic devices reducing their ability to affect touch system operations Temperature Carroll Touch s use of solid state electronics and its ASIC based modular circuitry enables the touch system to withstand and adapt to temperature extremes as well or better than the host display and system The standard Carroll Touch modular flat panel system is designed to...

Page 11: ...mponents are manufactured and their resistance to harsh chemicals and environmental extremes are discussed in Chapter 3 If chemical factors make your operating environment unsuitable for some components of the touch system other materials and coatings for touch systems and their components are available These materials and coatings along with tips on sealing the touch system are discussed in Chapt...

Page 12: ...functionality of a scanning IR touch system Carroll Touch has developed advanced design techniques that allow the modular flat panel touch system to adjust to high levels of ambient light These methods involve hardware design and the use of patented signal processing circuitry and algorithms which can handle very high ambient light levels Carroll Touch modular flat panel touch systems can tolerate...

Page 13: ... attendant firmware dynamically compensates for degradation of the opto electronic devices and for the effects of such environmental factors as ambient light variation and the accumulation of particulate contaminants Despite this built in protection against weakened signal strength caused by buildup of particulates the outer surface of the protective bezel should be dusted and or cleaned with a mi...

Page 14: ...ibes and illustrates four separate mounting schemes each of which is designed to increase the functionality of the touch system in a different environment The mounting methods include Simplest Mounting Method Typical NEMA 4 Mounting Method Anti Shock Vibration Mounting Method Industrial or Medical Mounting Method T ...

Page 15: ...ffective sealing by merely using industrial strength double sided tape to adhere both the touch system and the host display to the inside of a kiosk or enclosure opening Front and side views are shown in Figures 2 1 and 2 2 Figure 2 1 Simplest Mounting Method Front View 8 Pin Telephone Type Cable Double Sided Tape Back Housing Flat Panel Display Filter Gasket Bezel ...

Page 16: ...nting Techniques Modular Flat Panel Mounting and Environments Guide 2 3 Figure 2 2 Simplest Mounting Method Side View Viewing Area Back Housing Flat Panel Display Bezel Gasket Contact Point of Double Sided Tape Filter Front Panel ...

Page 17: ...ing Method Figures 2 3 and 2 4 show the front and side views of a typical NEMA 4 sealable mounting For more information on gasketing materials see Chapter 4 of this guide Figure 2 3 Typical NEMA 4 Mounting Method Front View Gasket Bezel 8 Pin Telephone Type Cable Back Housing Flat Panel Display Filter Front Panel Gasket ...

Page 18: ...2 Mounting Techniques Modular Flat Panel Mounting and Environments Guide 2 5 Figure 2 4 Typical NEMA 4 Mounting Method Side View Back Housing Flat Panel Display Bezel Viewing Area Front Panel Filter Gasket Front Panel Gasket ...

Page 19: ... enhanced by mounting techniques such as the one shown in Figure 2 5 This mounting is used in commercial aircraft and must withstand the vibration of the aircraft engines and the shock of air turbulence and landings which can often be measured in impacts of multiple Gs of force Figure 2 5 Anti Shock Vibration Mounting Method Shock Absorbers Back Housing Flat Panel Display Filter Gasket Touch Frame...

Page 20: ...stem can be enhanced by the mounting techniques shown in Figure 2 6 The use of a Carroll Touch modular touch system and compact flat panel display in cramped conditions such as those found in the surgical O R is further supported by the touch frame s capacity for being located up to six feet from its host computer connected only by a standard 8 pin telephone type jack and cable Figure 2 6 Industri...

Page 21: ...Chapter 2 Mounting Techniques CARROLL TOUCH 2 8 Modular Flat Panel Mounting and Environments Guide ...

Page 22: ...ments Guide 3 1 Bezel Filter Assembly 3 Bezel Filter Assembly his chapter describes the component materials and chemical properties of the bezel filter assembly Topics discussed include Component Materials Polycarbonate Chemical Resistance T ...

Page 23: ...ate filters Contact Carroll Touch for options and details Polycarbonate Chemical Resistance Certain combinations of chemical environments temperature and stress can adversely affect thermoplastic parts made from polycarbonate resin For this reason lubricants gaskets O rings cleaning solvents or any other material that may come in contact with the finished part should be carefully evaluated under e...

Page 24: ...ents and Cleaners Mild soap solutions are compatible Avoid strong alkaline materials Esters Cause severe crystallization Partial solvents Avoid Halogenated Hydrocarbons Solvents Avoid Ketones Cause severe crystallization and stress cracking Partial solvents Avoid Silicone Oils and Greases Generally compatible up to 185 F Avoid those that contain aromatic hydrocarbons Chloroform Dioxane Methylene c...

Page 25: ...lphate Butyl alcohol Grapefruit peel juice Petroleum ether Spindle oil Calcium chloride Gypsum Phosphoric acid concentrated Stannous chloride Calcium nitrate Hydrochloric acid 10 20 Potassium aluminum alum Sulphur Castor oil Hydrogen peroxide 30 Potassium bichromate Sulphuric acid 10 20 Cement Hydrofluoric acid 20 Potassium bromate Tartaric acid 30 Chlorinated lime paste Ink Potassium bromide Tinc...

Page 26: ...ent is analyzed most customers find that they will be able to use Carroll Touch modular flat panel touch systems without any adaptation However in some instances it may be necessary to enhance the standard touch system with additional sealing or conformal coating This chapter discusses the following topics Sealing Coating O ...

Page 27: ...isassembly and efficient access for cleaning and maintenance of the touch system The amount of cleaning required is dependent on the amount of dust or moisture in the environment and the quality of the seal Unlike CRT monitors flat panels do not attract dust Therefore the buildup of dust in the interior of a modular flat panel touch system does not occur Gasket material characteristics that must b...

Page 28: ...l service issues where the failure of a circuit could cause loss of human life conformal coating is used as a second method to seal a circuit Carroll Touch has used conformal coating only rarely in the past for extremely ruggedized or military applications Conformal coating is a polyurethane resin insulating compound that is sprayed on or washed over the printed circuit board assembly during the m...

Page 29: ...Chapter 4 Sealing and Coating CARROLL TOUCH 4 4 Modular Flat Panel Mounting and Environments Guide ...

Page 30: ...path from the LED to the phototransistor However broken beams may also result from a defective LED phototransistor or other touch system hardware and from other obstructions of the beam path See also beam host host system The computer system to which the IR touch system is added MDI See modular digital interface MDI modular digital interface MDI The frame to controller interface created by confini...

Page 31: ... that consists of the opto matrix frame the IR transparent protective bezel and the modular digital interface MDI touch system The collection of all the components that are necessary to detect a touch and report it to the host This collection usually consists of the touch frame or screen protective bezel and touch frame controller ...

Page 32: ...chnique 2 6 application environments 1 6 arcing 4 3 B bezel 1 2 1 6 3 2 4 2 C chemicals 1 3 1 4 4 2 4 3 commercial aircraft mounting techniques in 2 6 conformal coating 4 3 corrosion 4 3 D dust 1 6 4 2 E effects of chemicals on polycarbonate resin 3 2 electrostatic discharge 4 3 environmental factors 1 3 erosion 4 3 F filter 1 2 3 2 4 2 fluorescent light 1 5 G gasket materials 4 2 4 3 gasket prope...

Page 33: ...ace MDI 1 2 moisture 1 3 1 4 4 2 4 3 mounting technique anti shock vibration 2 6 industrial or medical 2 7 NEMA 4 2 4 simple 2 2 N NEMA 4 mounting technique 2 4 O opto matrix frame 1 2 opto pairs 1 2 oxidation 4 2 4 3 ozone 4 2 P particulate contaminants 1 3 1 6 phototransistors 1 2 1 6 physical beams 1 2 polarizing filter 3 2 polycarbonate resins 1 4 3 2 polycarbonate resins resistance to various...

Page 34: ... polyurethane resin 4 3 powder 1 6 S sealing 1 6 2 2 2 7 4 2 shock 1 3 1 4 2 6 silicone gasket 4 3 simple mounting technique 2 2 smoke 1 6 sparking 4 3 sunlight 1 5 surgical operating room mounting techniques in 2 7 T temperature 1 3 touch systems 1 2 U urethane gasket 4 2 V vibration 1 3 1 4 2 6 ...

Page 35: ...Index CARROLL TOUCH IN 4 Modular Flat Panel Mounting and Environments Guide ...

Page 36: ...uch 512 244 3500 Switchboard 2800 Oakmont Drive 800 386 8241 Toll Free Round Rock Texas 78664 512 388 5643 Order Assistance 512 388 5509 Technical Support 512 244 7040 Fax http www carrolltouch com 512 388 5668 Bulletin Board 14400K N81 ...