vb.net read barcode from camera SOFT TOUCH AND COMPLIANT COLLISION DETECTION in Software

Maker QR Code ISO/IEC18004 in Software SOFT TOUCH AND COMPLIANT COLLISION DETECTION

30.4 SOFT TOUCH AND COMPLIANT COLLISION DETECTION
QR Decoder In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
QR Code Printer In None
Using Barcode creator for Software Control to generate, create QR Code image in Software applications.
apply a little pressure or tap and you get a little voltage. Apply a heavier pressure or tap, and you get a bigger voltage. The piezoelectric material on ceramic piezo discs is so efficient that even a moderately strong force on the disc will produce in excess of 5 or 10 V. That s good in that it makes it easy to interface the discs to a circuit, since there is usually no need to amplify the signal. But it s also bad in that the voltage from the disc can easily exceed the maximum inputs of the computer, microcontroller, or other electronic device you re interfacing with. (Pound on a piezo disc with a hammer, and, though it might be broken when you re done, it will also produce a 1000 V or more.) To prevent damage to your support electronics, attach two 5.1-V zener diodes as shown in Fig. 30-33, to each disc of the touch bar. The zener diodes limit the output of the disc to 5.1 V, a safe enough level for most interface circuitry. For an extra measure of safety, use 4.7-V zeners instead of 5.1 V. Note that piezoelectric discs also make great capacitors. This means that over time the disc will take a charge, and the charge will show up as a constantly changing voltage at the output of the disc. To prevent this, insert a resistor across the output of the disc and ground. In the prototype circuits, an 82k resistor eliminated the charge buildup without excessively diminishing the sensitivity of the disc. Experiment with the value of the resistor. A higher value will increase sensitivity, but it could cause an excessive charge buildup. A lower value will reduce the buildup but also reduce the sensitivity of the disc. It is also helpful to route the output of the disc to an op amp, preferably through a 100K or higher resistor. Mounting the Touch Bar Once you have constructed the piezo disc touch bar and added the voltage-limiting circuitry, you can attach it to the body of the robot. The front of the robot is the likely choice, but you can add additional bars to the sides and rear to obtain a near 360 degree sensing pattern. The width of the bar makes it ideal for any robot that s between about 8 and 14 in wide. Since the sensing element of the touch bar, the aluminum tube, has a half-round shape, the sensor is also suitable for mounting on a circular robot base. For added compliancy, you may wish to mount the bar using a thick foam pad, spring, or shock absorber (shocks made for model racing cars work well). If the bar is mounting directly to the robot the sensor exhibits relatively little compliancy. You should mount the bar at a height that is consistent with the kinds of objects the robot is most likely to collide with. For a wall-hugging robot, for example, you may wish to mount the bar low and ensure that the half-round tube slopes downward. That way, the sensor is more likely to strike the baseboard at the bottom of the wall.
QR Code 2d Barcode Scanner In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
QR Code Generator In Visual C#
Using Barcode maker for .NET Control to generate, create QR Code 2d barcode image in VS .NET applications.
From Disc 5.1 v Zener
Making QR Code In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create QR image in ASP.NET applications.
QR Creation In .NET
Using Barcode generation for VS .NET Control to generate, create QR Code image in .NET applications.
Output
Paint QR Code In Visual Basic .NET
Using Barcode generator for VS .NET Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
Painting Code 128B In None
Using Barcode generator for Software Control to generate, create Code 128 Code Set B image in Software applications.
5.1 v Zener
Encoding Bar Code In None
Using Barcode maker for Software Control to generate, create barcode image in Software applications.
Drawing GTIN - 128 In None
Using Barcode encoder for Software Control to generate, create EAN / UCC - 14 image in Software applications.
FIGURE 30-33 A suitable interface circuit for connecting a piezo disc to a TTLcompatible input or op amp.
Barcode Printer In None
Using Barcode maker for Software Control to generate, create bar code image in Software applications.
GTIN - 13 Encoder In None
Using Barcode drawer for Software Control to generate, create EAN-13 Supplement 5 image in Software applications.
OBJECT DETECTION
Encoding Postnet 3 Of 5 In None
Using Barcode generation for Software Control to generate, create USPS POSTNET Barcode image in Software applications.
Bar Code Reader In VB.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
Software for Sensing a Collision The following code is a short sample program for reading the values provided by the piezo disc touch bar. The program is written for the BASIC Stamp 2 microcontroller and requires the addition of one or more serial-output analog-todigital converter chips (an ADC0831 was used for the prototype). You need only one ADC if it has multiple inputs; you ll need two ADCs if the chips have but a single input. See the comments in the program for hookup information.
Bar Code Encoder In None
Using Barcode generation for Microsoft Excel Control to generate, create bar code image in Office Excel applications.
Barcode Generation In Java
Using Barcode printer for BIRT Control to generate, create barcode image in BIRT reports applications.
' For the BASIC Stamp 2 ' Uses an ADC081 serial Adress var byte CS con 13 Adata con 14 CLK con 15 Vref con 0 high Vref high CS DO low CS shiftin AData, CLK, msbpost, [ADres\9] high CS debug Adres pause 100 LOOP ' Repeat ' ' ' ' ' Activate ADC Shift in the data Deactivate ADC Display result Wait 1/10 second ADC ' A-to-D result: one byte ' Chip select is pin 13 ' ADC data output is pin 14 ' Clock is pin 15 ' VRef
Making UPC-A Supplement 5 In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create UPCA image in ASP.NET applications.
Encoding UPC Symbol In Java
Using Barcode generator for Java Control to generate, create UPC A image in Java applications.
Printing Bar Code In Visual Basic .NET
Using Barcode printer for .NET framework Control to generate, create bar code image in .NET applications.
Decoding Barcode In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Copyright © OnBarcode.com . All rights reserved.