08-02-2013, 11:06 AM
SIMS: Smart Inventory Management System
[attachment=50127]
Introduction
SIMS provides a cost effective solution for the management of inventory which leverages RFID technology.
Combines an antenna array to a single RFID reader to map out an area for inventory detection
Features
PC serial interface
Compatible with RFID Readers and Antennas
Up to 8 outputs per unit
Expandable, modular design
System Overview
Hardware:
Power Supply, PC Interface Processing Unit, RF Switching Unit
TI HF RFID Reader, TI HF RFID Antenna, TI HF RFID Transponders
Software:
PC control for antenna switching
Hardware Overview (In House Manufactured)
Power Supply
Takes 6Vdc from AC/DC wall converter and converts to stable 5Vdc
PC Interface Processing Unit
PC communication with system
RF Switching Unit
Switching of RF signal from reader to selected antenna
PC Interface Processing Unit
PIC Microprocessor
RS232 Serial Communication with PC
Sends output to RF Switching Unit
PIN Diode Switching Unit (Eliminated)
Employ PIN Diodes for Switching
Great performance for small peak to peak AC signal (low power)
Poor performance for large peak to peak AC signal (high power)
Introduce impedance mismatch
Future Hardware Development
Improved Switching Unit for longer lifetime and higher signal isolation
Increased number of antenna outputs
Improved Antenna Design
Larger loop antenna
More stable impedance matching network and BALUN
[attachment=50127]
Introduction
SIMS provides a cost effective solution for the management of inventory which leverages RFID technology.
Combines an antenna array to a single RFID reader to map out an area for inventory detection
Features
PC serial interface
Compatible with RFID Readers and Antennas
Up to 8 outputs per unit
Expandable, modular design
System Overview
Hardware:
Power Supply, PC Interface Processing Unit, RF Switching Unit
TI HF RFID Reader, TI HF RFID Antenna, TI HF RFID Transponders
Software:
PC control for antenna switching
Hardware Overview (In House Manufactured)
Power Supply
Takes 6Vdc from AC/DC wall converter and converts to stable 5Vdc
PC Interface Processing Unit
PC communication with system
RF Switching Unit
Switching of RF signal from reader to selected antenna
PC Interface Processing Unit
PIC Microprocessor
RS232 Serial Communication with PC
Sends output to RF Switching Unit
PIN Diode Switching Unit (Eliminated)
Employ PIN Diodes for Switching
Great performance for small peak to peak AC signal (low power)
Poor performance for large peak to peak AC signal (high power)
Introduce impedance mismatch
Future Hardware Development
Improved Switching Unit for longer lifetime and higher signal isolation
Increased number of antenna outputs
Improved Antenna Design
Larger loop antenna
More stable impedance matching network and BALUN