Development and Implementation of an RFID-Based Tunnel Access Monitoring System

Table 1

The reading occurrences and the amount of errors during the monitoring period.

Done improvement	Monitoring period	Net error %	Reader error %	User error %	Errors in total	Reading occurrences in total
Time before any improvements	01.05.2010 to 14.07.2010	21.15%	65.39%	13.46%	52 pcs	8007 pcs
15.7.2010; Moving of the in-reading point	15.07.2010 to 22.09.2010	57.63%	6.78%	35.59%	59 pcs	7093 pcs
23.9.2010; Change from WLAN readers to LAN-readers	23.09.2010 to 15.11.2010	80.20%		19.80%	96 pcs	6971 pcs
16.11.2010; Tunnel dead end readers’ program change	16.11.2010 to 03.09.2011			100%	32 pcs	16822 pcs
10.3.2011; Forced out-reading point	10.03.2011 to 22.03.2011			100%	2 pcs	2146 pcs
23.3.2011; Forced out-reading point’s reading sensitivity adjustment	23.03.2011 to 30.04.2011				0 pcs	9421 pcs