Method for determining a radiation measurement for thermal radiation, arc furnace, a signal processing device programme code and storage medium for carrying out said method

A signal processing device for an arc furnace, having a machine-legible program code which has control commands which cause the signal processing device to:

• detect an electrode current which is supplied to an electrode,
• detect structure-borne sound oscillations of the arc furnace,
• determine a current evaluation signal, which is associated with a frequency range of the detected electrode current, from the detected electrode current,
• determine an oscillation evaluation signal which is associated with a frequency range of the detected structure-borne sound oscillations from the detected structure-borne sound oscillations, and
• form a quotient of the oscillation evaluation signal and current evaluation signal as a radiation measure for at least one frequency which is common to the detected electrode current and the detected structure-borne sound oscillations.

A non-transitory computer readable storage medium containing computer instructions stored therein for causing a computer processor to:

• detect an electrode current which is supplied to the electrode,
• detect structure-borne sound oscillations of the arc furnace,
• determine a current evaluation signal, which is associated with a frequency range of the detected electrode current, from the detected electrode current,
• determine an oscillation evaluation signal which is associated with a frequency range of the detected structure-borne sound oscillations from the detected structure-borne sound oscillations, and
• form a quotient of the oscillation evaluation signal and current evaluation signal as a radiation measure for at least one frequency which is common to the detected electrode current and the detected structure-borne sound oscillations.