Perimeter Protection: Speed Gates and UHF Technology for fast and secure vehicle access control


Perimeter protection defines the protection of the surroundings of a building or facility and consists of the two elements of periphery protection and property protection.

The protection of the periphery (outer skin) is mostly done by fencing or other mechanical barriers, their porosity is monitored by vehicle access control systems.

Speed Gates provide a high level of security and high speed

For vehicle access control systems two alternatives are available: the personal-controlled and automatic, non personal-controlled vehicle access control. In the first case mainly barrier systems are used, which are monitored and controlled by staff. In the second case massive sliding doors or speed gates are used which are opened by the user automatically, using radio or RFID technology.

Speed Gates are superior to sliding gates in terms of speed when it comes to limit the duration of porosity to a minimum. Therefore speed gates are the first choice for non personal-controlled vehicle access control systems. Another rapidly growing application for speed gates is the protection of public car parks against vandalism.

The right control unit is essential

Speed Gates allow a very fast door operation. Speed means on the one hand a high level of user comfort because there do not arise long car lines in case of high traffic volumes. On the other hand safety of the system increases, since the porosity of the system is limited to a very short period of time.

But speed also means high demands on the door control unit. Finally it must not only response to stop commands immediately, generated by the safety edges for example. In addition the control unit must provide for maximum gentle on material for the entire door system. For that it brings the gate to its end positions very slowly despite high opening and closing speeds.FEIG ELECTRONIC barrier system

These stringent requirements easily satisfy door control units with integrated frequency converter (FC) from FEIG ELECTRONIC, world market leader in FC control units for high speed gates – a market with quite similar requirements.

FC control units also ensure a fast and safe operation of barrier systems. Such systems offer an effective protection for periphery protection only in conjunction with personal monitoring. Therefore automatic operation of such a system is only recommended inside of the area, for example to regulate access control to employee and visitor parking.

UHF Technology for fast and comfortable vehicle access control

With speed gates, sliding doors and barrier systems there are three kinds of barriers available to prevent unauthorized access to the area. With radio transmitters, HF and UHF transponder technology there are also three alternatives for entering the area.

FEIG ELECTRONIC Radio transmitters

Radio transmitters allow easy and safe opening of doors and barriers from a great distance and with no need to stop or to open the window. Disadvantages are the battery operation of these transmitters (How to get in when the battery is empty?) and the fact that they can be stolen or passed to unauthorized parties, easily.

Looking at RFID solutions the user can choose between HF technology (13.56 MHz) and UHF technology (860-915 MHz).

HF technology (in the variant ISO14443) is the most popular frequency for access control and ticketing, ePayment (contactless payment with credit and debit cards) or eIdentity (RFID based ID cards and passports) and is characterized by maximum reading ranges of 10 cm.

Using such HF transponders for vehicle access control systems, the driver has to stop in front of the door or barrier and to hold the tag in front of a reader for entering the area. Benefits of such a solution are low hardware costs and the fact that HF systems are often already used for personal access control or payment systems. Therefore vehicle access control would be an extension of an already existing system.

Disadvantages are the small read range (less comfort) and again the possibility of unauthorized passing of the tag.

Compared with HF, the greatest advantage of UHF technology are read ranges of up to 16 meters. What is needed for an UHF vehicle access control system?FEIG ELECTRONIC UHF reading system

If an UHF reading system is installed on a gate or barrier and an UHF transponder is attached inside of the windshield, the system recognized the authorized vehicle from such a great distance that the driver can enter the terrain without stopping or other actions. A passing of the transponder can be prevented by characteristics that are known of vignettes: when detaching the transponder, for example parts of the antenna are destroyed so that the transponder becomes unusable.

Comprehensive solutions for highest security

Hardware components from FEIG ELECTRONIC provide for maximum security in many different ways.

Control units for doors and barriers control and monitor fast and secure operation of door and barrier systems. A wide range of accessories like multiple safety resistance evaluators, radio receivers, detectors and WiCAB, the radio-controlled safety system underline the position of FEIG as one of the world's leading supplier of control technology and sensor components.

RFID components provide for secure access to buildings and facilities as well for contactless payment in closed and open payment systems.

Further fields of application are Supply Chain Management or industrial and logistical process control.


FEIG ELECTRONIC is a German, worldwide leading manufacturer of control technology, sensors and RFID systems.

The term „Intelligent Door Management“ by FEIG ELECTRONIC stands for door control units for industrial doors as well as various accessories for opening, positioning and safe operation of door- and barrier systems.

Induction loop detectors for parking- and traffic influence systems

FEIG ELECTRONIC offers RFID readers and antennas for the frequencies LF, HF and UHF.

All products are developed and produced from current 220 employees in Germany.


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