Closing System Comprising a Force Sensor

• US 20100102978A1
• Filed: 01/21/2008
• Published: 04/29/2010
• Est. Priority Date: 01/26/2007
• Status: Active Grant

• Current Assignee: ASSA Abloy Sicherheitstechnik GmbH (Assa Abloy AB)
• Original Assignee: ASSA Abloy Sicherheitstechnik GmbH (Assa Abloy AB)
• Inventors: Wittke, Norman
• Granted Patent: US 8,164,447 B2
• Time in Patent Office: Days
• US Class Current: 340/665
• CPC Class Codes: E05B 45/086 by transverse movement
• CPC Class Codes: E05B 47/00 Operating or controlling locks or other fastening devices by electric or magnetic means electric permutation locks E05B49/00

Abstract

The invention relates to a closing system comprising at least one door provided with at least one displaceable closure element and a closure element receiving member. The at least one closing element of the door lock projects into the closing element receiving member when the closing system is in the closed state. The invention also relates to a keyless entry system for controlling the access of a chamber door, and to a method for controlling the closing state of the closing system comprising at least one door provided with a displaceable closing element and a closing element receiving member, whereby the at least one closing element of the door lock projects into closing element receiving member when the closing system is in the closed state, a force sensor and an evaluation unit. The closing system can be switched, in the closed state, from a first operational state to a second operational state.

Claims

1. A closing system, comprising:

an analysis unit,

at least one door having at least one movable closure element,

a closure element receptacle, the closure element projecting into the closure element receptacle in a closed state of the closing system,

a force sensor to generate a measured signal in relation to the force acting on the door and to relay the measured signal to the analysis unit, and

at least one impingement means to detect alternating loads acting on the door,

wherein the analysis unit switches the closing system in the closed state, as a function of a measured signal limiting value, from a first operating state into a second operating state, and

wherein the impingement means loads the force sensor with a preload in the closed state.

2. The closing system according to claim 1, further comprising at least one adjustment unit to adjust the preload exerted by the impingement means on the force sensor.

3. The closing system according to claim 1, wherein the analysis unit switches the closing system from the first operating state into the second operating state, in the closed state, as a function of the measured signal falling below a lowered measured signal limiting value or exceeding an upper measured signal limiting value.

4. The closing system according to claim 1, wherein an alarm limiting value causes the analysis unit to switch the closing system into an alarm state if the measured signal exceeds the alarm limiting value.

5. The closing system according to claim 1, wherein a measured signal range causes the analysis unit to switch the closing system into the alarm state if the measured signal exceeds or falls below the measured signal range.

6. The closing system according to claim 1, wherein the force sensor is situated on the door frame.

7. The closing system according to claim 1, wherein the force sensor is integrated in a door lock and in particular is situated on a lock bolt and/or on a lock latch.

8. The closing system according to claim 1, wherein the force sensor is situated on a door hinge.

9. The closing system according to claim 1, wherein the force sensor is situated on a striker plate.

10. The closing system according to claim 1, wherein the force sensor is situated on a magnetic clamp.

11. The closing system according to claim 1, wherein the force sensor is situated on a door leaf.

12. The closing system according to claim 1, further comprising a door opener, wherein the force sensor is integrated in the door opener.

13. The closing system according to claim 1, further comprising multiple force sensors whose measured signals are combined with one another.

14. A keyless entry system for access control of a room door including a closing system according to claim 1.

16. The closing system according to claim 1, wherein the first operating state is a locked state, and the second operating state is an unlocked state.

15. A method for controlling the closing state of a closing system, the closing system comprising at least one door having at least one movable closure element and a closure element receptacle, the closure element projecting into the closure element receptacle in a closed state, a force sensor, and an analysis unit, the closing system being switchable in the closed state into a first operating state and a second operating state, the method comprising:

a) generating a force-dependent measured signal by the force sensor;

b) relaying the measured signal to the analysis unit;

c) comparing the measured signal to at least one measured signal limiting value or measured signal limiting value range; and

d) changing over the closing system from the first operating state into the second operating state if the measured signal exceeds the measured signal limiting value and/or if a measured signal outside the measured signal limiting value range exists,

wherein the analysis unit triggers a changeover of the closing system into an alarm state after the identification of a characteristic measured signal pattern and/or if an alarm threshold value is exceeded by the measured signal.

17. The method according to claim 15, wherein the first operating state is a locked state, and the second operating state is an unlocked state.