Samson Aktiengesellschaft

Vodafone Holding Gmbh

Andreas Widl

Ronald Barker

G&uuml;nther Weber

Stefan Unland

Leon Urbas

Gerhard Widl

Uwe Schwab

Bernd Gr&uuml;n

In a method for the encryption communication in a process plant, one or more keys for coding of electronic signals regarding the process plant, such as actuation signals, measurement signals, state signals, warning signals or such, are provided. The one or more keys are transmitted as acoustic signal via a ductwork guiding plant fluid, particularly a process fluid or an auxiliary fluid, from the first communication partner to the second communication partner. The process plant can be a chemical plant, a power plant, or a food-processing plant. The communication can be between a first and a second communication partner, which can include at least one field device, such as an actuator for adjusting a process fluid and/or a control electronics for supervising, controlling and/or regulating processes of the process plant.

Method for the encrypted communication in a process plant, process plant, field device and control electronics

A diagnostic system and method to function-monitor an actuator to affect a process medium stream of a process engineering plant can include an optical microphone allocated to the actuator and a diagnostic electronics. The optical microphone can be configured to measure an acoustic, actuator-specific operating signal, as leakage sound and cavitation sound, based on electromagnetic radiation that is affected by the acoustic, actuator-specific operating signal, and generate an electrical measuring signal based on the measured acoustic, actuator-specific operating signal. The diagnostic electronics can be configured to receive and store, process, and/or transmit the electrical measuring signal.

Optical microphone to diagnose actuators

A roadside control device for checking the correct operation of a toll apparatus which is installed in a motor vehicle passing the control device and exhibiting an identifying license plate. The toll apparatus performs a satellite-supported electronic toll deduction and being equipped with the following facilities:

Roadside control device for a toll apparatus installed in a motor vehicle

Debiting device for deducting tolls

Growing community of inventors

Munich, Germany

Andreas Widl