Three-dimensional electric field sensor in hard hats

A three-dimensional electric field sensor constructed and arranged to fit a hard hat, wherein the sensor is parallelepipedally-shaped and centrally located on a front face of the hard hat, and comprising:

• a) a front face and a rear face, the rear face facing towards and being affixed to the hard hat, and the front face facing outwardly away from the hard hat;
• b) an outer shell covering the sensor, having a symmetrical round-edged parallelepipedal shape, and fitting over the entire length of the three-dimensional electric field sensor, comprising;
• a parallelepipedally-shaped outer shell base (2A), having a rear face facing towards the hard hat and fitting over the entire length of the sensor rear face, a hollow front face;
• and
• a parallelepipedally-shaped outer shell cover (2B), having a front face and a hollow rear face facing towards the hard hat, the rear face fitting to the front face of the outer shell base;
• c) a parallelepipedally-shaped inner shell (3), being a capacitive sensor, forming a single unit, contained within the outer shell and located on the rear face of the outer shell cover (2B), the inner shell comprising:
• a parallelepipedally-shaped inner shell base (3A), having a hollow front face and a rear face;
• and
• a rectangular-shaped inner shell cover (3B) fitting atop the front face of the inner shell base (3A);
• d) a rectangular-shaped electronic board (4), vertical and centrally located inside the inner shell (3), the electronic board configured for assisting controlling of the sensor, and the inner shell shielding the board from magnetic and electronic field exposure;
• e) a parallelepipedally-shaped battery and adapter assembly (5) providing a power supply, located inside the outer shell (2) on a central lower surface of the outer shell cover (2B), the assembly comprising:
• a parallelepipedally-shaped adapter (5A) located between a lower surface of the rear face of the inner shell base (3A) and a lower surface of the rear face of the outer shell cover (2A);
• a cylindrically-shaped battery (5B), fitted horizontally and parallelly along and to a bottom side of the adapter (5A);
• and
• f) a cylindrically-shaped warning buzzer (6), fitted adjacent to the battery and adapter assembly, between a lower surface of the rear face of the inner shell base (3A) and a lower surface of the rear face of the outer shell cover (2A), the buzzer providing an audible warning sound when triggered by the sensor detecting proximity to medium voltage conductors.