Skip to main content
PW pressure wave switch

Pressure wave switch

  • Very fast switching behaviour and high switching reliability
  • Straightforward and robust design
  • Millions of units successfully in service

Pneumatic pressure wave profiles for increased safety on public transport

The pressure wave system stands out thanks to its high level of response sensitivity, which enables it to protect people and vehicles from practically all directions.

Due to their robustness and durability, these switches are also really impressive when used as opening sensors for automatic gates and vehicle doors on buses and trains.

Just a slight pressure of 3 to 4 mbar on the sensor is all that is needed to guarantee reliable switching. Pressure-wave switch systems are practically failsafe and maintenance-free, plus they offer a particularly favourable price-performance ratio.

More on the technology

Pressure wave switch secure the entrance in public transport vehicles

Use on vehicle access systems

The sensitive pressure wave profiles on bus, train and tram access systems switch even when minimal pressure is applied, thus guarding against unintentional closing procedures.

Pressure wave sensors – the good contact for achieving safety

Pressure wave profiles

When pressure is applied to the profile, the air volume it contains is compressed in a pulsed manner and this generates a pressure wave. This wave passes through the connecting hose into the pressure wave switch, where it triggers the contact.

Ground contact sensors

The DGU ground sensor is installed underground and used principally as a sensor for automatic door and gate opening systems. It is very robust and can withstand any kind of vehicle driving over it.

The DGD pressure-sensitive cell is frequently used as a sensor in contact floors. It is characterised by its good robustness, flat design and ease of installation.

AirMission – radio transmitter with integrated pressure wave switch

The AirMission wireless signal transmission system forwards the signal from the safety edge on the primary closing edge to the gate control system. The AirMission transmits information regarding the status of the safety edge contact-free and therefore wear-free.

The AirMission 1.T transmitter is compatible and can be combined with all RFGate 2 receivers and the RFGate 2.1.W.S wicket door transmitter.

More about AirMission

Get in touch 

Do you have further questions about our products?
We look forward to receiving your call or e-mail!

info@bircher.com

+41 52 687 11 11