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<html> <head> <title>RFID-Bulletin Board: Re: Is someone producing active tags able like describe in my e-mail ?, Martin Miehling at 4/19/2002 11:13</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --> <blockquote> <center> <h1>Re: Is someone producing active tags able like describe in my e-mail ?</h1> </center><!-- Anfang BeitragsNavigationsLeisteOben --><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><center><P><B>[ <a href="../index.htm">RFID-Bulletin Board</a> ]</B></P></center><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><!-- Ende BeitragsNavigationsLeisteOben --><p>Written by <a href="mailto:m.miehling@globalid.ch">Martin Miehling</a> at 19 Apr 2002 11:13:33:<p>As an answer to: <a href="547.htm">Re: Is someone producing active tags able like describe in my e-mail ?</a> written by Hilton Myers at 18 Apr 2002 15:43:11:<p>Dear Sirs,<p>We do offer semi-active transponder systems which seeems to fulfill your need. The system wortks with a bi-channel communication. The transponder is (passive) activated using a 125KHz channel. During activation the information about the ID of the activation antenna and the delay time for the transponder response is transferred from the reader to the tag. <p>After the delay time is over the transponder will start automatically the active communication on the 433 MHz channel, sending information like ID of the wake up antenna (to check ie. which entrance was used and with double antennas to define the direction A-B or B-A the tag moved through) and his ID number. In addition the transponder is free on the 433MHz channel for a Read-Write data communication. If the protocoll is finished you swith back (return command) the tag in passive mode.<p>--> Tags do have anticollision of up to 20 pieces<br>--> Delay time for response is free programmable (data part of the wake up command)<br>--> different sizes available, depends on demanded reading distance. Actual size is less 50mm but 30 could be done as well from technical point of view. Will be more a commercial question (volume vs. cost)<br>--> By reducing either the tag power or the reader power the reding distance could be adapted to your needs.<p>What are your needs concerning reading distance, volume of transponders, packagings ?<p>If you have any quastions, please let us know and we will provide you with a fast answer. <br>With Kind regards<p>Martin Miehling<br>CTO Global-ID<p><br>>>I cannot describe the application as it is protected. This is no problem<br>>>I抦 looking for active tags and readers with anti-collision (20 tags per reader maximum).Yes The tags must be activated by the reader each ⌨️ 快捷键说明
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