Bircher Solution

bbc-bircher-ag-logo-vector


Technology

BBC Bircher Smart Access puts its faith in tried-and-tested technologies to enable it to meet your high safety and reliability requirements. Its technology expertise covers pressure-sensitive as well as contact-free detector systems. The field of contactless detectors makes use not only of microwave technology but also of active and passive infrared technology. Pressure-sensitive safety edges protect and monitor closing edges on doors and gates, while contact mats work as electric surface switches to safely activate and deactivate doors and machines. The pulse is passed on to the control system via the switching device by means of wireless signal transmission. Their focus is always on protecting people and machinery. You will find further information about safety standards and certifications on the corresponding product page.

Microwave technology – protection and activation for automatic doors and gates

Microwaves are electromagnetic waves with high frequency. The microwave motion detector, which works according to the Doppler principle in the 24 GHz microwave range, detects moving objects and irrespective of their temperature.

People or moving objects (min. 10 cm/s) throw the frequency emitted and received out of balance. This difference in frequencies is evaluated and transmitted as a switching pulse via relays or electronic contacts. As a result, almost all moving objects can be detected.

Infrared detector for activating and protecting doors and gates

The presence detector is able to emit infrared beams itself and to evaluate any shift in the frequency range. To this end, the detector runs via background analysis, i.e. the detector corresponds with the background and uses it as a reflector. It detects all the people and objects moving within its detection area and the switching operation is triggered on the door being monitored.

Tactile surface protection with contact mats

Pressure-sensitive contact mats are used for protection or activation in door areas and to ensure machine and plant safety.

When anyone steps on the surface of the mat, or a load is placed on it, two parallel copper contact surfaces are pressed together, which triggers the pulse for switching doors, gates or vehicles. The switching element is reliably protected from dirt and moisture by an outer sleeve made of robust polyurethane.

If used as a safety contact mat, the signal is evaluated by a safety switching device, which controls the activation and deactivation of machinery and plant.

Tactile edge protection thanks to electrical safety edges

Electrical safety edges are used for protecting pinching, crushing and shearing points on automatic gates, doors, machinery, plant and public transport.

The robust EPDM edges can be mounted horizontally or vertically on doors, gates or other moving parts of the plant. When a load is placed on it, the contact strip drawn into the profile is pressed together and the signal is transmitted to a switching device, which trips the opening or closing mechanism.

Loop detectors for industrial gates, barriers, car parks and bollards

Loop detectors use to activate barriers, open gates, control traffic, and monitor car parks for stationary or slow-moving vehicles.

They detect all metallic vehicles, from bicycles to HGVs with trailers. As soon as a vehicle drives over the induction loop laid in the ground, the loop’s resonance frequency changes. The detector reliably evaluates every change in frequency immediately and issues the pulse to open the gate or activate the parking system.

Pressure wave technology – for automatic doors, gates and switches

Pressure wave switches are principally used on larger gates and on access systems for various vehicles in public transport. When a pressure wave profile is compressed, the air volume it contains is displaced in a pulsed manner and this generates a pressure wave. This wave passes through the connecting hose into the PW switch directly, where it triggers a switching operation. Electric contact is maintained for as long as the input pressure is above the response pressure. Just a slight pressure of 3 to 4 mbar is all that is needed to effect switching.

Electrical signal transmission – radio, inductive and wired

During signal evaluation on automatic gates, information regarding the status of safety edges is transmitted to the switching device securely and contact-free, via either radio or induction. This switching device monitors the safety edges that emit signals for actuation and interrupts.