Exit device systems and methods

Patent metadata

Field	Value
Publication number	US-10370872-B2
Application number	US-201815903500-A
Country	US
Kind code	B2
Filing date	Feb 23, 2018
Priority date	Feb 24, 2017
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

An exit device according to one embodiment includes a plurality of sensors and an electronic dogging mechanism. The exit device is configured to locally analyze sensor data to determine the security state of the exit device, report data to a management system via a wireless communication channel established between the exit device and the management system, and receive and process instructions to perform an electronic dogging operation.

First claim

What is claimed is:

1. A method, comprising:
determining, by an exit device secured to a door, a door position status and a dogging status of the exit device based on a plurality of sensors of the exit device, wherein the door position status indicates whether the door is in one of a closed position or an open position, and wherein the dogging status indicates whether a dogging mechanism of the exit device is positioned to hold a pushbar of the exit device in a retracted position;
generating, by the exit device, a prop notification indicative of an occurrence of a prop event of the door based on the door position status and the dogging status; and
transmitting, by the exit device, the prop notification to a remote management system.

2. The method of claim 1 , further comprising determining, by the exit device, the occurrence of the prop event in response to the door position status indicating the door is in the open position and the dogging status indicating the dogging mechanism is not positioned to hold the pushbar in the retracted position.

3. The method of claim 2 , wherein determining the occurrence of the prop event is in response to the door position status indicating the door is in the open position for at least a threshold amount of time.

4. The method of claim 1 , further comprising:
determining, by the exit device, a dogging schedule that identifies one or more times at which dogging of the exit device is permitted; and
determining, by the exit device, the occurrence of the prop event in response to the dogging status indicating the dogging mechanism is positioned to hold the pushbar in the retracted position for at least a threshold amount of time outside of a permitted dogging time.

5. The method of claim 1 , further comprising determining, by the exit device, a latchbolt status of the exit device;
wherein the latchbolt status indicates whether a latchbolt of the exit device is in one of an extended position or a retracted position; and
wherein generating the prop notification comprises generating a prop notification based on the door position status, the dogging status, and the latchbolt status.

6. The method of claim 5 , further comprising determining, by the exit device, the occurrence of the prop event in response to the door position status indicating the door is in the closed position, the latchbolt status indicating the latchbolt is in the retracted position, and the dogging status indicating the dogging mechanism is not positioned to hold the pushbar in the retracted position.

7. The method of claim 1 , wherein transmitting the prop notification comprises wirelessly transmitting the prop notification to the remote management over a wireless communication channel.

8. An exit device, comprising:
a plurality of sensors adapted to generate sensor data;
a pushbar;
a processor; and
a memory comprising a plurality of instructions stored thereon that, in response to execution by the processor, causes the exit device to:
determine a door position status and a dogging status of the exit device based on the sensor data, wherein the door position status indicates whether a door is in one of a closed position or an open position, and wherein the dogging status indicates whether a dogging mechanism of the exit device is positioned to hold the pushbar of the exit device in a retracted position; and
generate a prop notification indicative of an occurrence of a prop event of the door based on the door position status and the dogging status.

9. The exit device of claim 8 , further comprising a wireless communication circuitry, wherein the plurality of instructions further causes the exit device to wirelessly transmit the prop notification to a remote management system via the wireless communication circuitry.

10. The exit device of claim 8 , wherein the plurality of instructions further causes the exit device to determine the occurrence of the prop event in response to the door position status indicating the door is in the open position and the dogging status indicating the dogging mechanism is not positioned to hold the pushbar in the retracted position.

11. The exit device of claim 10 , wherein the determination of the occurrence of the prop event is in response to the door position status indicating the door is in the open position for at least a threshold amount of time.

12. The exit device of claim 8 , wherein the plurality of instructions further causes the exit device to:
determine a dogging schedule that identifies one or more times at which dogging of the exit device is permitted; and
determine the occurrence of the prop event in response to the dogging status indicating the dogging mechanism is positioned to hold the pushbar in the retracted position for at least a threshold amount of time outside of a permitted dogging time.

13. The exit device of claim 8 , wherein the plurality of instructions further causes the exit device to determine a latchbolt status of the exit device;
wherein the latchbolt status indicates whether a latchbolt of the exit device is in one of an extended position or a retracted position; and
wherein to generate the prop notification comprises to generate a prop notification based on the door position status, the dogging status, and the latchbolt status.

14. The exit device of claim 13 , wherein the plurality of instructions further causes the exit device to determine the occurrence of the prop event in response to the door position status indicating the door is in the closed position, the latchbolt status indicating the latchbolt is in the retracted position, and the dogging status indicating the dogging mechanism is not positioned to hold the pushbar in the retracted position.

15. The exit device of claim 8 , wherein the plurality of sensors comprises a door position sensor, a request-to-exit sensor, a latchbolt sensor, and a dogging status sensor.

16. The exit device of claim 15 , wherein the door position comprises a magnetometer.

17. A system for wireless door prop notification, the system comprising:
a management system; and
an exit device comprising a plurality of sensors adapted to generate sensor data, the exit device configured to (i) determine a door position status, a dogging status, and a latchbolt status of the exit device based on the sensor data, (ii) generate a prop notification indicative of an occurrence of a prop event of the door based on the door position status, the dogging status, and the latchbolt status and (iii) transmit the prop notification to the management system, wherein the door position status indicates whether a door is in one of a closed position or an open position, wherein the dogging status indicates whether a dogging mechanism of the exit device is positioned to hold a pushbar of the exit device in a retracted position, and wherein the latchbolt status indicates whether a latchbolt of the exit device is in one of an extended position or a retracted position.

18. The system of claim 17 , wherein the exit device is further configured to:
determine a dogging schedule that identifies one or more times at which dogging of the exit device is permitted; and
determine the occurrence of the prop event in response to at least one of (i) the door position status indicating the door is in the open position for at least a first threshold amount of time and the dogging status indicating the pushbar is in the extended position, (ii) the dogging status indicating the pushbar is in the extended position for at least a second threshold amount of time outside of a permitted dogging

Assignees

• Schlage Lock Co Llc

Inventors

• Pfunder Dan
• Lacy Yong K

Classifications

• E05B2047/0089

  with electronic learning functions · CPC title

• E05B65/1053

  sliding towards and away form the door · CPC title

• E05B17/0083

  Sound emitting devices, e.g. loudspeakers · CPC title

• E05B17/22

  Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators {(E05B39/00 - E05B45/00 take precedence)} · CPC title

• E05B65/1093

  Dogging means for holding the actuation means, e.g. the actuating handle · CPC title