how to create barcode in vb.net 2008 FIGURE 2.140 Measurement of the travel of a camera lens. in Software

Drawer Code128 in Software FIGURE 2.140 Measurement of the travel of a camera lens.

FIGURE 2.140 Measurement of the travel of a camera lens.
Recognize USS Code 128 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Code 128C Encoder In None
Using Barcode generator for Software Control to generate, create Code 128 Code Set C image in Software applications.
C l a s s i f i c a t i o n a n d Ty p e s o f S e n s o r s
Code128 Recognizer In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Code 128 Code Set C Encoder In C#.NET
Using Barcode generator for .NET Control to generate, create Code 128C image in .NET framework applications.
FIGURE 2.141 Measurement of rubber sheet thickness.
Code 128 Code Set A Drawer In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create Code-128 image in ASP.NET applications.
Making Code128 In Visual Studio .NET
Using Barcode creator for .NET Control to generate, create Code128 image in VS .NET applications.
FIGURE 2.142
Code 128 Code Set B Creator In VB.NET
Using Barcode printer for Visual Studio .NET Control to generate, create USS Code 128 image in .NET framework applications.
Print EAN / UCC - 14 In None
Using Barcode creator for Software Control to generate, create EAN128 image in Software applications.
Measurement of the stroke of a precision table.
Create Barcode In None
Using Barcode generation for Software Control to generate, create bar code image in Software applications.
Drawing DataMatrix In None
Using Barcode drawer for Software Control to generate, create DataMatrix image in Software applications.
FIGURE 2.143 Measurement of plasterboard thickness.
UPC A Generator In None
Using Barcode creation for Software Control to generate, create UPC-A Supplement 2 image in Software applications.
Create Code 39 Full ASCII In None
Using Barcode creator for Software Control to generate, create Code 3/9 image in Software applications.
Two
Printing Identcode In None
Using Barcode encoder for Software Control to generate, create Identcode image in Software applications.
Make 2D Barcode In Java
Using Barcode generation for Java Control to generate, create 2D Barcode image in Java applications.
Further Reading
Paint EAN-13 In None
Using Barcode generator for Online Control to generate, create EAN / UCC - 13 image in Online applications.
Print Data Matrix 2d Barcode In Java
Using Barcode encoder for BIRT Control to generate, create Data Matrix 2d barcode image in BIRT reports applications.
Chappel, A. (ed.), Optoelectronics: Theory and Practice, McGraw-Hill, New York, 1978. Doebelin, E. O., Measurement Systems: Application and Design, 4th ed., McGraw-Hill, New York, 1990. Giallorenzi, T. G., Optical Fiber Interferometer Technology and Hydrophones in Optical Fiber Sensors, NATO ASI Series E, No. 132, Martinus Nijhoff Dordrecht, 35 50 (1987). Hocker, G. B., Fiber Optic Sensing for Pressure and Temperature, Appl. Optics, 18(1445) (1979) Holliday, D., and R. Resnick, Physics, Wiley, New York, 1975. International Organization for Standardization, Statistical Interpretation of Data: Comparison of Two Means in the Case of Paird Observations, ISO 3301-1975. Jackson, D. A., A. D. Kersey, and A. C. Lewin, Fiber Gyroscope with Passive Quadrature Demodulation, Electron. Lett., 20(399) (1984). Lion, K. L., Elements of Electrical and Electronic Instrumentation, McGraw-Hill, New York, 1975. Neubert, H.K.P., Instrument Transducers, 2d ed., Clarendon Press, Oxford, 1975. Ogata. K., Modern Control Engineering, 2d ed., Prentice-Hall, Englewood Cliffs, N.J, 1990. Rock, I., Lightness Constancy, Perception, W. H. Freeman, New York, 1984. Seippel, R. G., Optoelectronics, Reston Publishing Co., Reston, Va., 1981. Shortley, G., and D. Williams, Quantum Property of Radiation, Prentice-Hall, Englewood Cliffs, N.J., 1971. Todd, C. D. (Bourns Inc.), The Potentiometer Handbook, McGraw-Hill, New York, 1975. White, R. M., A Sensor Classification Scheme, IEEE Trans. Ultrasonics, Ferroelectrics, and Frequency Control, March, 1987.
USS Code 39 Encoder In None
Using Barcode creator for Excel Control to generate, create Code 3/9 image in Office Excel applications.
Create Code 39 Full ASCII In Visual Studio .NET
Using Barcode generator for Reporting Service Control to generate, create Code 3 of 9 image in Reporting Service applications.
CHAPTER
Reading EAN-13 In Visual Basic .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET applications.
Make 1D Barcode In Visual Basic .NET
Using Barcode creator for VS .NET Control to generate, create Linear 1D Barcode image in .NET applications.
Fiber Optics in Sensors and Control Systems
3.0 Introduction
Accurate position sensing is crucial to automated motion control systems in manufacturing. The most common components used for position sensing are photoelectric sensors, inductive proximity sensors, and limit switches. They offer a variety of options for manufacturing implementation from which highly accurate and reliable systems can be created. Each option has its features, advantages, and disadvantages that manufacturing personnel should understand for proper application. Three types of sensors are used in manufacturing applications: Photoelectric sensors. Limit switches. Long-distance detection. Noncontact metal detection. Inductive proximity sensors.
Detection with traditional reliability.
Photoelectric Sensors Long-Distance Detection
A photoelectric sensor is a switch that is turned on and off by the presence or absence of receiving light (Fig. 3.1). The basic components of a photoelectric sensor are a power supply, a light source, a photodetector, and an output device. The key is the photodetector, which is made of silicon, a semiconductor material that conducts current in the presence of light. This property is used to control a variety of output devices vital for manufacturing operation and control, such as mechanical relays, triacs, and transistors, which in turn control machinery.
Three
+ + LED
Photo Detector
Output Contact
Source
Detector
FIGURE 3.1 Photoelectric sensor.
FIGURE 3.2 Early photoelectric control.
Early industrial photoelectric controls used focused light from incandescent bulbs to activate a cadmium sulfide photocell (Fig. 3.2). Since they were not modulated, ambient light such as that from arc welders, sunlight, or fluorescent light fixtures could easily falsetrigger these devices. Also, the delicate filament in the incandescent bulbs had a relatively short life span, and did not hold up well under high vibration and the kind of shock loads normally found in an industrial environment. Switching speed was also limited by the slow response of the photocell to light/dark changes (Fig. 3.1).
Light-Emitting Diodes
Photoelectric sensors use an effective light source, light-emitting diodes (LEDs), which were developed in the early 1960s. LEDs are solid-state devices that emit light when current is applied (Fig. 3.3). This is the exact opposite of the photodetector, which emits current when light is received. LEDs have several advantages over incandescent bulbs and other light sources. LEDs can be turned on and off very rapidly, are extremely small, consume little power, and last as long as 100,000 continuous hours. Also, since LEDs are solid-state devices, they are much more immune to vibration than incandescent bulbs.
Fiber Optics in Sensors and Control Systems
FIGURE 3.3 Light-emitting diode.
LEDs emit light energy over a narrow wavelength (Fig. 3.4a). Infrared (IR) gallium arsenide LEDs emit energy only at 940 nm (Fig. 3.4b). As this wavelength is at the peak of a silicon photodiode s response, maximum energy transfer between source and detector is achieved. A silicon photodetector s sensitivity to light energy also peaks in the infrared light spectrum. This contributes to the high efficiency and long range possible when silicon photodetectors are used in conjunction with gallium arsenide LEDs.
Copyright © OnBarcode.com . All rights reserved.