When it comes to registering vehicles, determining positions and securing routes, you have these processes safely under control with HANNING & KAHL systems for vehicle detection. To secure routes and passively detect rail vehicles, HANNING & KAHL adapts its own systems to project requirements.
HFP track circuit for detection of wheelshunt
When axles produce a short circuit (< 0.3 Ohm, max. 5uH) in the track area, rail vehicles are recognised by the electronics. This way, the HFP track circuit detects the vehicle passively and does not require insulated rail joints.
HFK mass detector circuit for detection of vehicle mass
The robust system operates via an electric oscillating circuit, which indicates a change in frequency when a rail vehicle crosses the HFK mass detector coil with its metal mass. For safe protection against humidity and mechanical strain, mass detection coils and electronic components are cast in aplastic frame.
HSK blocking circuit for detection of combination of wheelshunt and vehicle mass
The HSK blocking circuit recognises the entry of rail vehicle spassively by the wheelshunt (< 1 Ohm, max. 5uH) produced and it recognises exiting vehicles by the reduction in vehicle mass detected. The HSK blocking circuit functions without insulated rail joints, its effective range is limited by short circuit connectors.
Wheel sensors before and behind the control segment count the axles of entering and exiting trains, ensuring that one train has left the section before another can enter. Untimely point setting (haste, lack of concentration, sabotage) or incorrect "Drive" signals are thus precluded.
Overhead line contacts
The HON system is a non-contact overhead line contact which is attached to the catenary wire and reacts to the carbon brush on the pantograph. The system includes a buffer stage for galvanic separation of voltages and an evaluating module.
Automatic train control
In areas where "Driving at Sight" is not possible, e.g. in tunnels or at speeds higher than 70 km/h (BOStrab § 49 Abs.2.2), trains must be technically monitored and controlled in the event of dangerous irregularities. Inductive or magnetic immobilisers installed at the Drive/Stop signals are activated when a signal which indicates stop is passed. Brakes are applied automatically if driving errors occur.
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