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Problems

For most programmers knew that Tripod Turnstile can’t delete RFID data after visitors pass through. This is necessary so that the card has been used can not be used again. Cards can be used again when it is refilled at ticket booths. So, how it can be happend ? While the card reader can not be set to automatically remove registered RFID cards by self. One of several way is to create a software that works automatically for delete data.

How I solved the problem

Let’s see the illustration below :

(1). When ticket seller sold ticket, they tagging to RFID reader to store Mac-Id data to reader located insite Tripod turnstile, so that RFID cards has registered as legal user to passed in. (2). And then when visitors passed through from Tripod Turnstile, (3). server detect tagged RFID number and start to delete registered RFID data on Reader located inside the Tripod Turnstile.

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Problems

As my experienced in several places with tripod turnstile as pedestrian gate and operated with RFID as trigger, I was found troubles as follows :

1. Gate couldn’t  be opened after RFID tagging.

2. Gate opened, but counter said more than 1 persons passed through

Problem Solver

For number 1 above, I found 2 possibilities on it, here is my idea and solved those problems :

1.1. Full Log, just clear log on machine. Syntax :  CZKEM1.ClearGLog MACHINENUMBER

1.2. Using Unregistered Card. Register can be done with or within code.

For number 2 above,

Some existing software on tripod turnstile seller, pedestrian counter based on raised number triggered by RFID tagging by pedestrians. Usually using OnHIDNum event. Some times the RFID Reader detect 1 RFID tag twice or even more, and its trigger the pedestrian counter to counting more than 1 times. So, I solve this problem with change the way how to get the right counter by place number who get from reader in object first, then when “change” event trigger, count it once.

Hope that my blogs can help….