High Security Tailgate Detection System
Model TG-HS

Overview

The High Security Tailgate Detection System was designed for use in areas where the highest level of tailgate detection is required.  This unit provides three access levels to monitor both pedestrian and vehicular traffic.

In the drawing (right), the gray represents a vault entrance, the blue represents the steel posts housing the electronics, and the red represents the sensor beams.

An optional Overhead Sensor Array is available

The tailgate system monitors access control inputs, multiple sets of thru-beam infrared sensor pairs to monitor pedestrian and automatic guided vehicle (AGV) traffic through a  vault or other protected door.  The access control inputs provide three different levels of access through the sensing area:

• Momentary Valid Card Input  Allows one person the pass through the sensing area for each card read.  Passing through the sensing area in the wrong direction will generate an alarm.

• Momentary AGV Card Input  Allows an AGV to pass through the sensing area.  The AGV entry allows extended time for AGV passage without generating an alarm.  Passing through the sensing area in the wrong direction will generate an alarm.

• Maintained Bypass Input  Allows complete free access through the sensing area without generating an alarm.  The bypass input also resets an alarm condition. 

Technical Specifications

2 Momentary (1/4 - 1/2 sec.) normally open AGV card inputs, entry and exit.  Closing these inputs allows an AGV to pass through the sensing area.

1 Maintained normally open bypass input.  Closing this input places the tailgate system into bypass mode, no alarms are generated.

1 normally closed bypass status relay, rated at 1/2 Amp @ 30 VDC.

2 one-gang display units (entry and exit) contain a red LED to indicate armed status, a green LED to indicate access granted, and a sounder to beep once with valid card presentation. The sounder is on during alarm.

The display plates are mounted in a 1-gang electrical box.