OPENTECHNICAL PUBLICATION
OT-2026-000003127

Pole alarm system

Published: 2026-09-15T19:34:24.726364Z
Permanent URL: https://opentechnical.org/p/OT-2026-000003127
Categories: Lifting, Positioning & Manipulation > Hoists and Cranes

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ABSTRACT

A Pole Alarm System including an electromagnetic field sensor and collision
sensors for detecting overhead power lines and physical obstructions within
the intended path of a telescoping mast or utility boom device is disclosed.
The present alarm system includes a mast-mounted housing containing the
sensors and a microprocessor-based control unit which interprets the output
signals of the sensors and provides both audible and. control feedback to a
safety control module in the vehicle to alert the operator of impending
contact and to automatically stop the movement of the mast. The alarm housing
also features a light source which provides illumination in the direction of
movement of the mast to assist in positioning thereof. The light source also
functions as a heating element to prevent the accumulation of ice on the
housing which would detrimentally affect the performance of the system. The
alarm housing also includes a plurality of Tilt sensors which monitor the
orientation of the mast to prevent mast extension if the device deviates from
an acceptable range of operation. A system integrated safety control module
mounted in the vehicle provides self-test functions and an error code display
to alert the operator to the cause of an alarm signal.

1. Drawings

[0001] Sheet 1.

[0002] Sheet 2.

[0003] Sheet 3.

[0004] Sheet 4.

[0005] Sheet 5.

[0006] Sheet 6.

[0007] Sheet 7.

[0008] Sheet 8.

[0009] Sheet 9.

[0010] Sheet 10.

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OpenTechnical publication OT-2026-000003127
Published 2026-09-15T19:34:24.726364Z
https://opentechnical.org/p/OT-2026-000003127