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Vehicle Identification

TeleTag

®

System

STid UHF RFID Readers

IMPLEMENTATION GUIDE

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Summary of Contents for TeleTag System

Page 1: ...Vehicle Identification TeleTag System STid UHF RFID Readers IMPLEMENTATION GUIDE...

Page 2: ...ormance range and speed A tag should be matched to its environment to give the best possible results o The same tag will operate very differently on metal or behind glass windscreen o At this frequenc...

Page 3: ...hieved if the tag is directly opposite the antenna parallel to it and with the correct polarisation For optimum performance the tag should be straight opposite the antenna The range values given in te...

Page 4: ...ted areas where applicable as shown in the illustration below The location of these non treated areas will depend on the make and model of the vehicle A non exhaustive list is available in the Appendi...

Page 5: ...xample with a TML model on a bus radiator grill approximately 1 10m from the ground not touching the metal windscreen wiper Installing the tag Once you have decided where to position the tag install i...

Page 6: ...lysis will provide a good overview of the feasibility of the desired configuration and will help to identify any adaptations or adjustments that may be required Testing From the outset we recommend de...

Page 7: ...enna and set up the detection zone ahead of the barrier for more reliable detection and to allow the system time to activate the barrier opening system A higher antenna with a downward orientation wil...

Page 8: ...cating the recommended locations for the antenna readers This configurations are only examples and do not guarantee results They are generic with the purpose of feeding the design process External var...

Page 9: ...ual antenna URD reader in a lateral orientation 1 antenna positioned for optimal detection of cars 1 antenna positioned for optimal detection of HGVs Reader positioned ahead of the barrier for early d...

Page 10: ...sk of interference Each antenna controls one lane and transmits the data it reads to the appropriate gate Multi lane access Use of a multi antenna multi lane URD reader A single reader can control 1 t...

Page 11: ...ten positioned to one side of the traffic lane and at a different height A corrected range value Dc is estimated from the nominal range D in order to give the ground range Ds the ground level distance...

Page 12: ...position in relation to the antenna This table should be used to estimate the reduction in range due to the angles between antenna and tag which determine the adjustment coefficient to be applied to...

Page 13: ...72 m Example 2 Let us consider a URC reader and TeleTag on a heat reflective windscreen Nominal range 4 m Average angle x 20 Average angle y 30 Corrected Range Dc 4 0 94 0 87 3 27 m STEP TWO calculate...

Page 14: ...colored reflections on the glass Impact of the heat reflective windscreens on the performances The metal being a blocking element for radio frequencies heat reflective windscreens will modify the per...

Page 15: ...upply and distance between power supply and reader My reader does not start up Voltage too low Incorrect cabling Check the voltage at the reader input terminals Use a regulated power supply My tag is...

Page 16: ...STid 2014 No unauthorised reproduction Frequently Asked Questions 16 NA102A03_EN Vehicle identification TeleTag UHF APPENDIX 1 Types of heat reflective windscreens...

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