Axle Generators

Use internal speed sensors to count pulses related to specific gear rotations. This speed data is then relayed to the onboard computer for determination of potential over-speed conditions.

Track Receivers

Inductively receive coded signals from the rails. These signals are then processed by the on-board computer as continuous signal aspects. PHW offers a variety of track receiver bars, including both conventional and patented, high AC traction immunity versions.

Decelerometers

Vital microprocessor controlled devices that can be used to determine a vehicle's deceleration rate. Fail-safe design principles ensure that a compound deceleration rate cannot be erroneously obtained.

Power Supplies 

for our own cab signal systems. We also custom manufacture power supplies to serve most any existing onboard electronics application.

Diagnostic and Test Software

In addition to the software that is the logic behind our on-board computers, PHW software engineers custom develop Cab Signal Diagnostic and Test Software packages to provide solutions for system diagnostics, performance monitoring, and wayside troubleshooting.

 These tools provide answers to situations that would otherwise go unresolved.