barcode reader in asp.net ASTRODAT USER INTERFACE 261 in Software

Drawer Code 128B in Software ASTRODAT USER INTERFACE 261

ASTRODAT USER INTERFACE 261
Code-128 Recognizer In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Print Code 128 In None
Using Barcode creator for Software Control to generate, create Code 128C image in Software applications.
wide (to accommodate the 12-bit ADC result). Between acquisition cycles, the processor goes in sleep mode to conserve power. After the entire memory has been filled up, the processor goes into sleep mode and can be now brought back to the base station and the stored data read out through the Docking port. The next section describes a complete DAS on similar principles, but with some modifications to accommodate more features.
Code-128 Reader In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Creating USS Code 128 In Visual C#
Using Barcode creation for .NET framework Control to generate, create ANSI/AIM Code 128 image in .NET applications.
15.5 AstroDat: A Complete DAS for Astronomical Application
Encoding Code 128 Code Set B In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create Code 128 Code Set A image in ASP.NET applications.
Encode Code 128C In .NET
Using Barcode drawer for .NET Control to generate, create Code 128 image in .NET applications.
The SniffStick DAS is an interesting and useful piece of hardware. However, for certain astronomical data acquisition applications, we needed something more than SniffStick could offer, namely a time-stamping facility as well as the ability to store multiple observation data in a single memory device. The particular astronomical observation that I am referring to is photometric data logging. A photometer is an instrument that converts light to voltage. Astronomical photometers are low-noise devices that are capable of detecting faint light intensities emanating from stars and other objects in the sky. Typically, for an astronomical data acquisition run, you would like to record data related to many different stars and objects in a single night of observation. Besides, you would also like to record the ambient night sky brightness as a reference. This means that the date-recording system should have the ability to start and stop a particular observation and maintain these different sets, which could be separated out later. To accommodate this feature, I modified the basic SniffStick design to incorporate an RTC and an extra switch. To do this I had to migrate to a bigger processor with more I/O lines. Figure 15.7 illustrates the new design. The data storage was implemented with a new structure, which is as follows:
Make USS Code 128 In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create Code 128C image in VS .NET applications.
Print GS1-128 In None
Using Barcode drawer for Software Control to generate, create EAN / UCC - 14 image in Software applications.
1. The unit of data storage in the EEPROM was decided to be 16-bit word. 2. Data stored in the EEPROM has tags to help interpret the data. Each set of observa-
Painting UPC-A In None
Using Barcode printer for Software Control to generate, create UPC A image in Software applications.
Code 128A Printer In None
Using Barcode generator for Software Control to generate, create Code-128 image in Software applications.
tions is identified by a unique set number tag. Each set of observations will have a start tag (containing the set number) at the beginning of the set and a stop tag indicating the end of the set. 3. Each set of data has a start tag followed by a time tag, which indicates the time at the start of the set, and this is followed by the actual data. There can be as many data points as possible, limited by the EEPROM storage capacity.
Generate EAN / UCC - 13 In None
Using Barcode maker for Software Control to generate, create EAN 13 image in Software applications.
Make Bar Code In None
Using Barcode generation for Software Control to generate, create barcode image in Software applications.
15.6 AstroDat User Interface
Making ITF-14 In None
Using Barcode printer for Software Control to generate, create ITF-14 image in Software applications.
USS Code 128 Decoder In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
The user interacts with the AstroDat system through the three switches and an activity LED on the PCB. The switches, as illustrated in Figure 15.7, are: Reset switch, which can
Barcode Generator In Visual Studio .NET
Using Barcode printer for .NET framework Control to generate, create barcode image in VS .NET applications.
ECC200 Generator In Java
Using Barcode printer for Java Control to generate, create ECC200 image in Java applications.
262 AVR PROJECT 6: ASTRODAT: A STAND-ALONE DATA ACQUISITION SYSTEM
Code 3 Of 9 Recognizer In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
EAN-13 Scanner In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
To PC RS-232 Serial Port
Recognizing Barcode In C#.NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in VS .NET applications.
EAN-13 Supplement 5 Encoder In Visual Basic .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create EAN13 image in VS .NET applications.
DS1302 RTC SCLK RST I/O
RS-232 Transceiver
(Memory) AT24C512 X1 X2 RST AT90S2313 SDA CS\ SCL
(ADC) MAX186 SCLK Dout
Analog Input
Reset
Menu
Acquire
FIGURE 15.7 Block diagram of the AstroDat Data Acquisition System.
be pressed at any time to restart the system; the Menu key, which can be pressed after the system reset to interact with the system for configuration and data readout through a PC serial port; and the Acquire key, which can be pressed after the system reset to begin acquisition. The activity LED on the board indicates when the system is busy acquiring data. When the LED is ON, the system is acquiring data as per the sampling rate and when the LED is OFF, the system is waiting for either the Acquire key or the Menu key. Pressing the Acquire key starts a new set of data to be acquired. Pressing the Acquire key when the LED in ON terminates the ongoing data acquisition process and completes the current set. The AstroDat DAS offers an interactive user interface on a PC terminal emulator program through its serial port. The DAS can be programmed for various functions through this user interface. The AstroDat hardware communicates on a serial port set at 9600 bps, 8 data bits, 1 stop bit, and no parity bit. The functions are:
1. Initialize RTC. Allows the user to set the RTC time. 2. Read RTC. Allows the user to verify the time. 3. Read EEPROM. Allows the user to read the EEPROM contents online in small chunks. 4. Enter delay. This is a 2-byte value that sets the interval between two data points. 5. Read delay. Allows the user to read the delay value. 6. Write to file. This allows the user to download the entire EEPROM contents that the
Copyright © OnBarcode.com . All rights reserved.