Fall protection compliance system and method

Patent metadata

Field	Value
Publication number	US-12429494-B2
Application number	US-202217876699-A
Country	US
Kind code	B2
Filing date	Jul 29, 2022
Priority date	Jan 14, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A fall protection compliance system includes a connection structure configured for interfacing an anchor structure and a connection sensor associated with the connection structure. The connection sensor includes an accelerometer or a pressure switch, where the connection sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal indicating said continued connection.

First claim

What is claimed is:

1. A fall protection compliance system, comprising:
a connection structure configured for interfacing an anchor structure; and
a connection sensor assembly associated with the connection structure, the connection sensor assembly comprising:
a connection sensor comprising a piezo sensor;
wherein the piezo sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal; and
wherein the piezo sensor comprises a wire and a surrounding spring positioned along an inside edge of an end portion of the connection structure; and

at least one processor configured to receive the signal from the connection sensor and determine a connection status based on the signal.

2. The system of claim 1 , wherein the connection structure comprises a hook having a gate structure, wherein the connection sensor is activated based on detected movement of the gate structure.

3. The system of claim 1 , wherein the piezo sensor generates a voltage signal based on movement of the connection structure.

4. The system of claim 3 , wherein the piezo sensor comprises an insulated wire.

5. The system of claim 3 , wherein the anchor structure is configured to interface with the connection structure at or near the end portion.

6. The system of claim 5 , wherein the anchor structure is configured to interface with the piezo sensor or the surrounding spring of the piezo sensor within the end portion of the connection structure.

7. The system of claim 1 , wherein the connection sensor assembly further comprises a pressure switch, an RFID detector, or a combination thereof, wherein the connection status is determined based on signals from the piezo sensor and the pressure switch, the RFID detector, or the combination thereof.

8. The system of claim 7 , wherein the connection sensor is configured such that when the anchor structure presses the surrounding spring against the end portion of the connection structure, a metallic contact forms between the surrounding spring and the pressure switch which provides a conductive path enabling transmission of the signals to the at least one processor.

9. The system of claim 1 , wherein the signal comprises a piezoelectric waveform and wherein the at least one processor is configured to determine the connection status by integrating the piezoelectric waveform over an integration window corresponding to the period of time, thereby generating an integrated value, wherein the integrated value being greater than a predetermined threshold value is indicative of a level of motion attributable to a connected user.

10. The system of claim 1 , wherein the anchor structure comprises a line, the connection structure comprises a hook, and the connection sensor comprises the piezo sensor, wherein the connection sensor assembly is configured to detect a movement signature based on a periodic signal provided by the piezo sensor induced by the hook dragging across the line.

11. The system of claim 1 , wherein the connection sensor assembly is configured to determine a Boolean value regarding continued connection.

12. The system of claim 1 , wherein the connection sensor assembly is configured to determine a type associated with the monitored continued connection, wherein the type comprises one or more of: no connection, active movement, and connected with limited movement.

13. The system of claim 12 , wherein the connection sensor assembly is further configured for issuing an alarm based on the type of connectivity detected.

14. The system of claim 1 , further comprising:
a memory configured to store at least a portion of the signal as data; and
a transmitter configured to transmit the data to an external entity.

15. The system of claim 14 , wherein the data is stored via periodic, timestamped sampling of the signals on a microsecond, millisecond, second, or minute basis.

16. The system of claim 1 , wherein the at least one processor is further configured to determine whether the monitored continued connection of the connection structure to the anchor structure is compliant.

17. The system of claim 1 , wherein the signal comprises piezoelectric waveforms and wherein the at least one processor is further configured to analyze the piezoelectric waveforms to identify types of known connection statuses and/or operating conditions including at least one of the following: not connected, sitting while connected, standing while connected, kneeling while connected, prostrate while connected, moving while connected, not connected to a connection structure, not connected to an anchor structure, a small bump condition, a large bump condition, a fall condition, a fall arrest, a disconnection condition, a dead hang configuration, or any combination thereof.

18. The system of claim 1 , wherein the piezo sensor further comprises a fulcrum.

19. A method of providing fall protection compliance monitoring, comprising:
activating a connection sensor based on detected movement of a gate structure of a hook portion of the connection sensor;
receiving a first signal from the connection sensor associated with a connection structure configured for interfacing with an anchor structure, wherein the connection sensor comprises a piezo sensor or a pressure switch;
determining whether a user is continually connected over a period of time based on the first signal; and
outputting a second signal indicating said determination of whether the user is continually connected; and
integrating the second signal over an integration window corresponding to a period of time, thereby generating an integrated value, wherein the integrated value being greater than a predetermined threshold value is indicative of a user being connected.

20. A fall protection compliance system, comprising:
a connection structure configured for interfacing an anchor structure; and
a connection sensor assembly associated with the connection structure, the connection sensor assembly comprising:
a connection sensor comprising a piezo sensor;
wherein the piezo sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal; and
wherein the piezo sensor comprises a wire and a surrounding structure positioned along an inside edge of an end portion of the connection structure; and

at least one processor configured to receive the signal from the connection sensor and determine a connection status based on the signal;
wherein the signal comprises a piezoelectric waveform and wherein the at least one processor is configured to determine the connection status by integrating the piezoelectric waveform over an integration window corresponding to the period of time, thereby generating an integrated value, wherein the integrated value being greater than a predetermined threshold value is indicative of a level of motion attributable to a connected user.

Assignees

• Msa Technology Llc

Inventors

• Sepe Benjamin T
• Harding Jeffrey F
• Tuell Mitcham C
• Campbell Robert Craig
• Stygar Christopher M
• Rutkowski Peter I
• Goodspeed Michael

Classifications

• G06K7/10

  by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation · CPC title

• G08B21/02

  Alarms for ensuring the safety of persons · CPC title

• G08B25/016

  Personal emergency signalling and security systems (emergency non-personal manually actuated alarm activators G08B25/12) · CPC title

• G08B21/18

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

• G01P15/18

  in two or more dimensions · CPC title