Apparatus and method for providing useful audio feedback to users of arc welding equipment
AssigneeDeep Ocean Engineering Incorporated
InventorGraham S. Hawkes
Life of this patent
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Abstract
The user of electric arc welding equipment is provided with audible feedback signals which provide useful information relating to the output current and voltage of the welder. An audio tone is generated and is frequency modulated by a signal which corresponds to welder output voltage. The tone is amplitude modulated by a signal corresponding to output current thus providing the user with a synthesized feedback signal having a voltage-proportional pitch and current-proportional volume. Additional modulation means are disclosed for introducing a current-proportional warble component to said tone.
Claims14
An audio feedback system for monitoring and aiding in user control of electric arc welding equipment comprising:
- means providing an electrical signal proportional to welding electrode current;
- means providing an electrical signal proportional to welding electrode voltage;
- a signal generator;
- frequency modulation means connected to one of said electrical signals for varying the output frequency of said signal generator in proportion to said signal;
- amplitude modulation means connected to the other of said electrical signals for varying the output amplitude of said signal generator in proportion to said other signal;
- and
- means for audibly reproducing the output of said signal generator.
A method for providing useful audio feedback to users of arc welding equipment comprising:
- generating an electrical signal proportional to welding electrode current;
- generating an electrical signal proportional to welding electrode voltage;
- generating an audio tone;
- varying the amplitude of said tone in proportion to one of said signals;
- and
- varying the frequency of said tone in proportion to the other of said signals.
A method for documenting and recording electric arc welding operations comprising:
- generating a synthesized audio signal having an amplitude proportional to welding electrode current and a frequency proportional to welding electrode voltage;
- using a video camera and video recorder to record a picture of the arc welding operation;
- recording said synthesized audio signal simultaneously with said video recording for synchronized playback of said audio signal and a video picture of the welding operation which produced said signal.
Dependencies are inferred from the claim text.