Switch detection device using RFID tag

• US 7,737,849 B2
• Filed: 03/27/2007
• Issued: 06/15/2010
• Est. Priority Date: 07/07/2006
• Status: Expired due to Fees

• Current Assignee: Chung Hua University
• Original Assignee: Chung Hua University
• Inventors: Wu, Chia-Wen, Wang, Chih-Hu, Yen, Ming-Ching, Tien, Ching-Cheng, Chen, Jwu-E, Lee, Bore-Kuen, Hwang, Chi-Kuang, Chung, In-Hang, Chiu, Chien-Jung, Chen, Tung-Chou
• Primary Examiner(s): Hunnings; Travis R
• Application Number:
  US11/727,569
• Publication Number:
  US 20080007408A1
• Time in Patent Office: 1,176 Days
• Field of Search: 340/572.1, 340/10.1, 340/505, 340/541, 340/554.1, 340/549, 340/545.6, 340/545.7, 340/545.8
• US Class Current: 340/572.1
• CPC Class Codes: E05B 2047/0069 bolt position
• CPC Class Codes: E05C 3/043 the pivot being between bolt and handle E05C3/042 takes precedence
• CPC Class Codes: E05D 11/00 Additional features or accessories of hinges edge protecting devices E06B3/88
• CPC Class Codes: E05Y 2400/326 of the angular type
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: E05Y 2900/148 Windows

Abstract

A switch detection device using RFID tags is disclosed. The switch detection device includes a RFID tag, a conducting circuit loop and a switch connected to the conducting circuit loop to form a control circuit. The switch is controlled to turn on or off, leading to the closing or opening of the control circuit. The RFID tag detects the state of the conducting circuit loop and transmits a signal representing the opened/closed state to a RFID reader. The switch detection device is incorporated to a turning operation mechanism which includes a lever lock assembly, a deadbolt lock assembly, a window sash lock assembly, an odometer wheel, a hinge provided with a first hinge member and a second hinge member interconnected by a central axle, a door closer, a water faucet, a rotatable switch, or a rotatable lock.

Claims

1. A switch detection device, comprising:

a RFID tag provided with a reference voltage port and at lease one data input/output port;

at least one conducting circuit loop provided with a first end and a second end respectively connected to the reference voltage port and the data input/output port of the RFID tag, having an open state and a closed state; and

at least one switch electrically connected in the conducting circuit loop to actuate the conducting circuit loop in the open state or in the closed state, the switch including a portion displaceable between an open state position and a closed state position, the RFID tag, the conducting circuit loop and the switch being accommodated in a housing, the switch being driven by a lever combined with a resilient member and a rod, where the lever controls the switch through the rod;

wherein the open state or the closed state of the conducting circuit loop is transmitted through the conducting circuit loop to the data input/output port of the RFID tag, and thereby a signal representing the open state or the closed state of the conducting circuit loop is detected by the RFID tag.

2. The switch detection device as claimed in claim 1, wherein the conducting circuit loop comprises pliable metal material.

3. The switch detection device as claimed in claim 1, wherein the conducting circuit loop is made of an electrically conductive material selected from a group consisting one of copper, aluminum, alloy, and conducting glue.

4. The switch detection device as claimed in claim 1, wherein the switch comprises a reed switch having a first contact and a second contact, in which the first contact and the second contact are respectively connected to the reference voltage port and the data input/output port of the RFID tag.

5. The switch detection device as claimed in claim 4, wherein the first contact and the second contact are further extend outward from the housing respectively.

6. A switch detection device, comprising:

a RFID tag provided with a reference voltage port and at lease one data input/output port;

at least one conducting circuit loop provided with a first end and a second end respectively connected to the reference voltage port and the data input/output port of the RFID tag, having an open state and a closed state;

at least one switch electrically connected in the conducting circuit loop to actuate the conducting circuit loop in the open state or in the closed state, the switch including a portion displaceable between an open state position and a closed state position; and

a wired external switching loop being actuated by the switch, the RFID tag, the conducting circuit loop, the switch and the wired external switching loop being accommodated in a housing, wired external switching loop having two terminals extended outward from the housing;

wherein the open state or the closed state of the conducting circuit loop is transmitted through the conducting circuit loop to the data input/output port of the RFID tag, and thereby a signal representing the open state or the closed state of the conducting circuit loop is detected by the RFID tag.

7. A switch detection device comprising:

a RFID tag provided with a reference voltage port and at lease one data input/output port;

at least one conducting circuit loop provided with a first end and a second end respectively connected to the reference voltage port and the data input/output port of the RFID tag, having an open state and a closed state; and

at least one switch electrically connected in the conducting circuit loop to actuate the conducting circuit loop in the open state or in the closed state, having an open state and a closed state;

wherein the open state or the closed state of the conducting circuit loop is transmitted through the conducting circuit loop to the data input/output port of the RFID tag, and thereby a signal representing the open state or the closed state of the conducting circuit loop is detected by the RFID tag;

wherein a first reed switch comprises a first contact and a second contact respectively connected to the reference voltage port and the data input/output port of the RFID tag; and

wherein a second reed switch comprises a third contact and a fourth contact respectively extended outward from the housing.

8. A switch detection device, comprising:

a turning operation mechanism;

a detection circuit incorporated to the turning operation mechanism for detecting a rotation operation of the turning operation mechanism, the detection circuit further comprising;

a RFID tag provided with a reference voltage port and at lease one data input/output port; and

at least one switch electrically connected between the reference voltage port and the data input/output port of the RFID tag, the switch including a portion displaceable between an open state position and a closed state position;

wherein the open state or the closed state of the switch is detected by the RFID tag, and thereby a signal representing the open state or the closed state of the switch is detected by the RFID tag.

9. The switch detection device as claimed in claim 8, wherein the turning operation mechanism is a lever lock assembly which comprises a rotatable door handle, a central handle axis and a movable lock pin, the door handle being manually rotatable around the central handle axis and the door handle driving the lock pin to move along a direction, the detection circuit being arranged to detect the movement of the lock pin.

10. The switch detection device as claimed in claim 8, wherein the turning operation mechanism is a deadbolt lock assembly which comprises a rotatable lock knob, a central handle axis and a movable lock pin, the door handle being manually rotatable around the central handle axis and the lock knob driving the lock pin to move along a direction, the detection circuit being arranged to detect the movement of the lock pin.

11. The switch detection device as claimed in claim 8, wherein the turning operation mechanism is a window sash lock assembly which comprises a lever with a lock end, a lock axis and a stopper, the lever being rotatable around the lock axis in a rotation direction, the detection circuit being arranged to detect the rotation of the lever.

12. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises at least one odometer wheel arranged along a central axle, the detection circuit being arranged to detect the rotation of the odometer wheel.

13. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a hinge provided with a first hinge member and a second hinge member interconnected by a central axle and allowing a relative rotation between the first hinge member and the second hinge member.

14. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a door closer provided with a bracket, a tubular body and a piston rod, a free end of the piston rod being movably extended from an open end of the tubular body, the detection circuit being mounted to the tubular body and a magnet being mounted to the piston rod, a relative position of the magnet to the detection circuit being detected by the RFID tag.

15. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a water faucet provided with a faucet handle, the detection circuit being arranged adjacent to the faucet handle to detect a rotation of the faucet handle.

16. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a switch which is rotatable around an axle, the detection circuit being arranged adjacent to the axle to detect a rotation of the switch.

17. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a rotatable lock provided with a rotatable circular member and a knob, the rotatable circular member being rotatable in a rotation direction, the detection circuit being arranged adjacent to the rotatable circular member to detect a rotation of the rotatable circular member.

18. The switch detection device as claimed in claim 8, wherein the turning operation mechanism comprises a rotatable switch provided with a rotatable circular member and a knob, the rotatable circular member being rotatable in a rotation direction, the detection circuit being arranged adjacent to the rotatable circular member to detect a rotation of the rotatable circular member.