Apparatus for detecting electromagnetic wave and protecting eyes from glare
An anti-glare eye protection apparatus includes an anti-glare eye protection plate, an optical detector, an electromagnetic wave sensor, an electromagnetic wave detector, a user interface, a main controller, and a light transmittance controller. The electromagnetic wave sensor senses an electromagnetic wave generated by a welding or cutting torch using at least two coils. The electromagnetic wave detector compares a signal received through the electromagnetic wave sensor with a reference value. The user interface includes a display for selecting or displaying one of the optical and electromagnetic wave detectors. The main controller applies an electromagnetic wave detector activation signal to the electromagnetic wave detector as the optical detector starts optical detection and monitors changes in a received electromagnetic wave signal based on output of the electromagnetic wave detector. The light transmittance controller controls change in light transmittance of the eye protection plate according to a signal output from the main controller.
1. An apparatus for detecting an electromagnetic wave and protecting eyes from glare, the apparatus comprising:
an anti-glare eye protection plate for protecting eyes of a worker from light generated by a welding or cutting torch;
an optical detector for detecting light generated by the welding or cutting torch;
an electromagnetic wave sensor for sensing an electromagnetic wave generated by the welding or cutting torch using at least two coils each having a different shape or different orientation;
an electromagnetic wave detector for comparing a signal, which is amplified after being received through the electromagnetic wave sensor, with a preset reference value which can be varied;
a user interface including a display for selecting or displaying one of the optical detector and the electromagnetic wave detector;
a main controller for applying an electromagnetic wave detector activation signal to the electromagnetic wave detector as the optical detector starts optical detection and monitoring changes in a received electromagnetic wave signal based on an output of the electromagnetic wave detector and then outputting the monitored result; and
a light transmittance controller for controlling a change in light transmittance of the anti-glare eye protection plate according to a signal output from the main controller,
wherein the electromagnetic wave detector includes:
a resonator for resonating an electromagnetic wave signal received through the electromagnetic wave sensor; and
a filter for removing noise from an output of the resonator,
the resonator and the filter including two combinations of resonator and filter portions, the two combinations being provided respectively for the first and second coils.
2. The apparatus according to claim 1 ,
wherein the at least two coils includes first and second rod-shaped coils that extend horizontally and vertically to form a cross.
3. The apparatus according to claim 1 , wherein the two combinations being provided respectively for the first and second coils are arranged in parallel to each other.
4. The apparatus according to claim 1 , wherein the at least two coils includes a first coil in the form of a rod and a second coil in the form of a ring that is formed around the first coil.