barcode reader in asp.net codeproject Part II in Software

Encoding QR Code in Software Part II

Part II
Denso QR Bar Code Recognizer In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Create QR Code 2d Barcode In None
Using Barcode encoder for Software Control to generate, create QR image in Software applications.
Electronics
QR Code Decoder In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Draw QR-Code In C#
Using Barcode maker for .NET Control to generate, create QR Code 2d barcode image in Visual Studio .NET applications.
Flow Measurements In many engineering applications it is desirable to sense the ow rate of a uid, whether compressible (gas) or incompressible (liquid) The measurement of uid ow rate is a complex subject; in this section we simply summarize the concepts underlying some of the most common measurement techniques Shown in Figure 152 are three different types of ow rate sensors The sensor in Figure 152(a) is based on differential pressure measurement and on a calibrated ori ce: the relationship between pressure across the ori ce, p1 p2 , and ow rate through the ori ce, q, is predetermined through the calibration; therefore, measuring the differential pressure is equivalent to measuring ow rate The sensor in Figure 152(b) is called a hot-wire anemometer, because it is based on a heated wire that is cooled by the ow of a gas The resistance of the wire changes with temperature, and a Wheatstone bridge circuit converts this change in resistance to a change in voltage while the current is kept constant Also commonly used are hot- lm anemometers, where a heated lm is used in place of the more delicate wire A very common application of the latter type of sensor is in automotive engines, where control of the air-to-fuel ratio depends on measurement of the engine intake mass air ow rate Figure 152(c) depicts a turbine owmeter, in which the uid ow causes a turbine to rotate; the velocity of rotation of the turbine (which can be measured by a noncontact sensor eg, a magnetic pickup2 ) is related to the ow velocity Besides the techniques discussed in this chapter, many other techniques exist for measuring uid ow, some of signi cant complexity Temperature Measurements One of the most frequently measured physical quantities is temperature The need to measure temperature arises in just about every eld of engineering This subsection is devoted to summarizing two common temperature sensors the thermocouple and the resistance temperature detector (RTD) and their related signal-conditioning needs
Generating QR Code In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create QR image in ASP.NET applications.
QR Code 2d Barcode Maker In .NET
Using Barcode drawer for .NET framework Control to generate, create QR-Code image in .NET applications.
Thermocouples
Painting QR Code In Visual Basic .NET
Using Barcode generator for .NET Control to generate, create QR Code JIS X 0510 image in VS .NET applications.
Code 3/9 Encoder In None
Using Barcode maker for Software Control to generate, create Code 3/9 image in Software applications.
q p1 p2
GS1 - 13 Drawer In None
Using Barcode creation for Software Control to generate, create EAN-13 image in Software applications.
Printing Barcode In None
Using Barcode creation for Software Control to generate, create barcode image in Software applications.
Differential-pressure flowmeter: A calibrated orifice and a pair of pressure transducers permit the measurement of flow rate (a)
Generate EAN / UCC - 13 In None
Using Barcode encoder for Software Control to generate, create GS1 128 image in Software applications.
Generate Data Matrix In None
Using Barcode maker for Software Control to generate, create Data Matrix ECC200 image in Software applications.
R1 VEX R2 vo + R3
Encoding EAN8 In None
Using Barcode drawer for Software Control to generate, create EAN8 image in Software applications.
Scan USS Code 128 In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Hot-wire anemometer: A heated wire is cooled by the gas flow The resistance of the wire changes with temperature (b)
Paint Data Matrix 2d Barcode In Java
Using Barcode printer for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
Print Bar Code In None
Using Barcode encoder for Font Control to generate, create bar code image in Font applications.
Turbine
Generate UPCA In C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create UPC-A Supplement 5 image in Visual Studio .NET applications.
Code 128B Generator In VS .NET
Using Barcode maker for Reporting Service Control to generate, create Code 128A image in Reporting Service applications.
A thermocouple is formed by the junction of two dissimilar metals This junction results on an open-circuit thermoelectric voltage due to the Seebeck effect, named after Thomas Seebeck, who discovered the phenomenon in 1821 Various types of thermocouples exist; they are usually classi ed according to the data of Table 152 The Seebeck coef cient shown in the table is speci ed at a given temperature because the output voltage of a thermocouple, v, has a nonlinear dependence on temperature This dependence is typically expressed in terms of a polynomial of the following form: T = a0 + a1 v + a2 v 2 + a3 v 3 + + an v n (151) For example, the coef cients of the J thermocouple in the range 100 C to +1,000 C are as follows: a0 = 0048868252 a3 = 11,569,19978
Drawing UPC - 13 In None
Using Barcode drawer for Word Control to generate, create GS1 - 13 image in Office Word applications.
Encode GTIN - 12 In Java
Using Barcode maker for Java Control to generate, create GTIN - 12 image in Java applications.
2 See
Turbine flowmeter: Fluid flow induces rotation of the turbine; measurement of turbine velocity provides an indication of flow rate (c)
a1 = 19,87314503 a4 = 264,917,5314
a2 = 128,6145353 a5 = 2,018,441,314
Figure 152 Devices for the measurement of ow
16, Focus on Measurements: Magnetic Reluctance Position Sensors
15
Electronic Instrumentation and Measurements
Table 152 Thermocouple data Seebeck coef cient ( V/ C) 5870 at 0 C 5037 at 0 C 3948 at 0 C 1019 at 600 C 3874 at 0 C 1135 at 600 C
Type E J K R T S
Elements +/ Chromel/constantan Iron/constantan Chromel/alumel Pt(10%) Rh/Pt Copper/constantan Pt(13%) Rh/Pt
Range ( C) 270 to 1,000 210 to 1,200 270 to 1,372 50 to 1,768 270 to 400 50 to 1,768
Copyright © OnBarcode.com . All rights reserved.