Fall protection harness with damage indicator

Patent metadata

Field	Value
Publication number	US-9847010-B2
Application number	US-201514962833-A
Country	US
Kind code	B2
Filing date	Dec 8, 2015
Priority date	Dec 8, 2015
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A fall protection harness includes a computer processor, an optical transmitter, and an optical receiver coupled. The optical transmitter and the optical receiver are optically coupled. Upon damage to the fall protection harness, the optical coupling between the optical transmitter and the optical receiver is broken, the computer processor senses the break in the optical coupling between the optical transmitter and the optical receiver; and the computer processor generates a signal indicating the damage.

First claim

The invention claimed is:

1. A system comprising:
a fall protection harness;
a computer board comprising a radio frequency (RF) communication device coupled to the fall protection harness;
an optical transmitter coupled to the fall protection harness and the computer board; and
an optical receiver coupled to the fall protection harness and the computer board;
wherein the optical transmitter and optical receiver are positioned on a surface of the fall protection harness;
wherein the optical transmitter and the optical receiver are optically coupled; and
wherein the fall protection harness comprises a strap, the strap is folded over on itself and attached via threading into a folded over area, the threading positioned at a first location on a first side of the optical transmitter and receiver and at a second location at an opposite side of the optical transmitter and receiver, thereby maintaining the optical coupling of the optical transmitter and optical receiver, and the optical transmitter and the optical receiver are attached to the strap at the folded over area;
wherein upon damage to the fall protection harness, the optical coupling between the optical transmitter and the optical receiver is broken due to force applied on the threading's first location and/or second location, the computer board senses the break in the optical coupling between the optical transmitter and the optical receiver; and
wherein the damage is caused by a fall by a person wearing the fall protection harness; and wherein the computer board generates a signal indicating the damage.

2. The system of claim 1 , wherein the break in the optical coupling between the optical transmitter and the optical receiver comprises one or more of physical damage to the optical transmitter or optical receiver, a misalignment of an optical beam between the optical transmitter and the optical receiver, or an increased or decreased distance between the optical transmitter and optical receiver.

3. The system of claim 1 , wherein the folded over area comprises a first surface area of the strap folded over on and in contact with a second surface area of the strap;
wherein the optical transmitter is coupled to the first surface area and the optical receiver is coupled to the second surface area;
wherein upon the fall by the person, the first surface area separates from the second surface area, thereby breaking the optical coupling between the optical transmitter and the optical receiver; and
wherein the computer board is operable to sense the breaking in the optical coupling between the optical transmitter and the optical receiver and generate the signal indicating the fall.

4. The system of claim 1 , wherein the signal comprises a radio frequency signal, and the radio frequency signal causes one or more of a visual alarm to be illuminated and acoustic alarm to be sounded.

5. The system of claim 1 , wherein the computer board senses a voltage level within a threshold of variation of voltage when the optical transmitter and the optical receiver are optically coupled, thereby indicating that no fall has occurred.

6. The system of claim 1 , wherein the computer board senses a voltage level beyond a threshold of variation voltage level when the optical transmitter and optical receiver are not optically coupled, thereby indicating that a fall has occurred.

7. A system comprising:
a fall protection harness;
a computer processor coupled to the fall protection harness;
an optical transmitter coupled to the fall protection harness and the computer processor; and
an optical receiver coupled to the fall protection harness and the computer processor;
wherein the optical transmitter and optical receiver are positioned on a surface of the fall protection harness;
wherein the optical transmitter and the optical receiver are optically coupled;
wherein the fail protection harness comprises a strap, the strap is folded over on itself and attached via threading into a folded over area, the threading positioned at a first location on a first side of the optical transmitter and optical receiver and at a second location at an opposite side of the optical transmitter and optical receiver, thereby maintaining the optical coupling of the optical transmitter and optical receiver, and the optical transmitter and the optical receiver are attached to the strap at the folded over area;
wherein upon damage to the fall protection harness, the optical coupling between the optical transmitter and the optical receiver is broken due to force applied on the threading's first location and/or second location, the computer processor senses the break in the optical coupling between the optical transmitter and the optical receiver;
wherein the damage is caused by a fall by a person wearing the fall protection harness; and
wherein the computer processor generates a signal indicating the damage.

8. The system of claim 7 , wherein the break in the optical coupling between the optical transmitter and the optical receiver comprises one or more of physical damage to the optical transmitter or optical receiver, a misalignment of an optical beam between the optical transmitter and the optical receiver, or an increased or decreased distance between the optical transmitter and optical receiver.

9. The system of claim 7 , wherein the folded over area comprises a first surface area of the strap folded over on and in contact with a second surface area of the strap;
wherein the optical transmitter is coupled to the first surface area and the optical receiver is coupled to the second surface area;
wherein upon the fall by the person, the first surface area separates from the second surface area, thereby breaking the optical coupling between the optical transmitter and the optical receiver; and
wherein the computer processor is operable to sense the breaking in the optical coupling between the optical transmitter and the optical receiver and generate the signal indicating the fall.

10. The system of claim 7 , wherein the signal comprises a radio frequency signal (RF), and the RF signal causes one or more of a visual alarm to illuminate and acoustic alarm to be sounded.

11. The system of claim 7 , wherein the computer processor senses a voltage level within a threshold of variation of voltage when the optical transmitter and the optical receiver are optically coupled, thereby indicating that no fall has occurred.

12. The system of claim 7 , wherein the computer processor senses a voltage level beyond a threshold of variation voltage level when the optical transmitter and optical receiver are not optically coupled, thereby indicating that a fall has occurred.

13. The system of claim 7 , wherein the computer processor comprises a computer board comprising a radio frequency (RF) communication device.

14. A non-transitory computer readable medium comprising instructions that when executed by a processor execute a process comprising:
monitoring an optical coupling between an optical transmitter and an optical receiver, the optical transmitter and optical receiver coupled to a fall protection harness by positioning the optical transmitter and the optical receiver on a surface of the fall protection harness;
determining that the fall protection harness has been damaged by sensing that the optical coupling between the optical transmitter and the optical receiver is corrupted; and
generating a signal as a function of the damage to the fall protection harness;
wherein the fall protection harness comprises a strap, the strap is folded over on itself and attached via threading into a folded over area, the threading positioned a

Assignees

• Honeywell Int Inc

Inventors

• Pham Hai D
• Huseth Steve D
• Kulkarni Amit

Classifications

• G08B21/18 Primary

  Status alarms (G08B21/02 takes precedence) · CPC title

• A62B35/04

  incorporating energy absorbing means · CPC title

• A62B35/0025 Primary

  Details and accessories · CPC title