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WO2001012928A1 - Procede et appareil pour empecher l'ouverture non autorisee d'un verrouillage electronique - Google Patents

Procede et appareil pour empecher l'ouverture non autorisee d'un verrouillage electronique Download PDF

Info

Publication number
WO2001012928A1
WO2001012928A1 PCT/US2000/017880 US0017880W WO0112928A1 WO 2001012928 A1 WO2001012928 A1 WO 2001012928A1 US 0017880 W US0017880 W US 0017880W WO 0112928 A1 WO0112928 A1 WO 0112928A1
Authority
WO
WIPO (PCT)
Prior art keywords
lock
actuator
electronic
electric
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/017880
Other languages
English (en)
Inventor
Gerald Dawson
David Wolterman
Michael J. Kelly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mas Hamilton Group Inc
Original Assignee
Mas Hamilton Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mas Hamilton Group Inc filed Critical Mas Hamilton Group Inc
Priority to AU70513/00A priority Critical patent/AU7051300A/en
Publication of WO2001012928A1 publication Critical patent/WO2001012928A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • G07C9/00912—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for safes, strong-rooms, vaults or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0075—Locks or fastenings for special use for safes, strongrooms, vaults, fire-resisting cabinets or the like
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00666—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with dials
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/005—Opening, closing of the circuit
    • E05B2047/0054—Opening, closing of the circuit using microprocessor, printed circuits, or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0057—Feeding
    • E05B2047/0062—Feeding by generator
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means

Definitions

  • This invention relates to the field of devices for preventing covert opening of electronic locks, and more specifically, relates to an electronic circuit that will prevent opening the lock by the unauthorized application of power to the electronic lock.
  • Having access to this part of the lock provides the opportunity for tampering with the lock.
  • One type of tampering to which electronic locks are particularly susceptible is wiring and/or providing an alternate power supply to the lock, which could be operated from outside the security container. Typically, this may be accomplished by providing electric power directly to the electric actuator employed in the lock, usually a motor or solenoid, which positions the bolt or which permits/conditions the lock to be opened by further operator action.
  • the present invention solves the problem discussed above and is a shorting or shunt circuit designed to allow an authorized operator to provide power to the electronic lock and which will prevent an unauthorized operator from opening the lock when an authorized combination has not been entered.
  • Figure 1 illustrates an exemplary lock in accordance with the present invention.
  • Figure 2 illustrates a block diagram of an electronic circuit that may be employed in the lock of Figure 1.
  • Figure 3 provides an exemplary electrical shunt circuit shown in
  • Figure 4 provides a second exemplary electrical shunt circuit shown in Figure 2.
  • Electronic locks and electronic combination locks in particular are susceptible to tampering by a person who has access to the lock case after the lock has been opened.
  • Electronic combination locks may most easily be tampered with by providing power to the electric actuator that either physically repositions the bolt or places the lock in condition where an operator may withdraw the bolt.
  • the back cover of the lock must be removed. Then one or more conductors are connected to the electronic actuator and the conductor(s) run outside the secured container so that by providing electrical power to the conductor(s) the electric actuator would be energized so that the lock may be opened.
  • the present invention prevents this application of electrical power from causing the lock to open or be placed in a condition where a user may open a lock. This is accomplished by using a low resistance shunt or short across the leads of the electric actuator. When an authorized combination is entered the shunt or short is opened so that the electric actuator may perform as designed.
  • an exemplary electronic lock of the type employing this invention is indicated as a lock 10, mounted on safe or vault door 12.
  • Lock 10 may employ a knob 14 for dialing or entering combinations into lock 10, a knob housing 16 and a display 18.
  • Shaft 20 may extend from knob 14 to the lock mechanism housing 22. Extending from the lock mechanism housing 22 and retractable into lock housing 22 is a bolt 26, which must be withdrawn to allow door 12 to swing open and permit access to the secure area.
  • Other embodiments of electronic lock 10 the knob 14 may be replaced with a keypad.
  • display 18 or a shaft 20 may be omitted.
  • the knob 14 may be connecting to a generator 29 and to the retractor drive cam 30 with shaft 20.
  • the generator 29 may be a stepper motor driven as a generator.
  • generator 29 could be any other method of generating electrical power through movement of knob 14.
  • the series of electrical pulses are generated and feed to the power supply 36 for rectification and shaping.
  • the shaping the pulses accomplish by circuitry that is conventional and forms no part of this invention.
  • the electrical pulses may also be feed to the microprocessor 44. These pulses, if provided to microprocessor 44, are out of phase so that they may be employed to determine the direction of the rotation of knob 14.
  • the electronic controls 24 of lock 10 are typically contained in the lock casing 22 that is installed in the secure area of the vault or safe.
  • the electronic controls typically contain a power supply 36 that supplies power to a microprocessor 44 and the actuator circuit 40 that causes an electronic actuator 46 to withdraw or extend bolt 26 or to place the lock 10 in a condition whereby the operator may manually withdraw or extend bolt 26. Additionally, in some embodiments power supply 36 may supply power to operate a shunt circuit 50.
  • Power supply 36 may be any circuit that is capable of converting the electrical power provided to lock 10 to a form (AC and/or DC) and voltage that can be utilized by the electrical components employed in lock 10.
  • the source of electric power may be a generator 29, as discussed above; a battery; or line.
  • microprocessor 44 contains some internal read only memory 45 and may in some embodiments communicate with an electronic erasable programmable read only memory (EEPROM) 43.
  • EEPROM electronic erasable programmable read only memory
  • the erasable electronic programmable read only memory 43 enables the program running in the microprocessor to change, store and save data about a particular user or the lock in general.
  • an integrated circuit specially designed to perform the functions required of a specific lock could be utilized.
  • Microprocessor 44 provides signals to the electric actuator firing circuit 40 and to the shunt circuit 50. Additionally, the microprocessor may provide data to the display drive 19, which would drive an external display 18.
  • the use of an external display 18 together with the display driver 19 is optional. The use of an external display however, provides for easier feedback and operator use.
  • a solenoid or electric motor is employed as the electric actuator 46.
  • Any electric device that could withdraw and/or extend the bolt or place the lock in a condition whereby the operator may open the lock may be utilized for actuator 46.
  • Figure 3 illustrates the preferred shunt circuit 50.
  • the shunt circuit shown employs a relay SR3.
  • the relay SR3 is a latching relay.
  • a latching relay enables the relay to be placed in the open or closed position without continuously holding the relay in that position.
  • any electronically controlled switching device such as a transistor, bipolar and/or SCR may be utilized. It is preferred that the switching device selected has a low resistance across the device when the device shunts current around or shorts electronic actuator 46 through connectors 52 and 54. The higher the resistance from the lead 52 through the relay SR3 or other switching device to lead 54 the larger the voltage created across the switching device for a given current and consequently a smaller total current would be required to develop operating power in electric actuator 46.
  • a relay SR3 or switching device such that the relay SR3 or switching device would fail due to over current prior to developing operating power in actuator 46. Additionally, it is also desired that the current required to fail the relay SR3 or switching device also cause a failure in the electric actuator 46 if the relay SR3 or other switching device fails in the open position so that the lock fails in the locked or closed position. In other embodiments it may be desirable to select the relay SR3 or switch and actuator 46 such that the actuator 46 fails due to over current (current heating) but without operating prior to the relay SR3 or switch failing due to excessive current.
  • Shunt circuit 50 also utilizes in the preferred embodiment a capacitor C19 that stores sufficient electrical energy to reposition the relay, at least once, and in the most preferred embodiment, twice.
  • the use of capacitor C19 is optional, however the use of this capacitor ensures that there is sufficient energy in the electronic circuitry 24 to reposition the relay SR3 to the shut or shunt position after operating actuator 46.
  • the shunt circuit 50 may utilize two transistors Q33 and Q34 as switching devices to reposition relay SR3 when relay SR3 is a latching relay. If non-latching relay were utilized in place of the latching relay, then only a single transistor or switch would be required in the preferred embodiment.
  • Each transistor Q33 and Q34 is connected with traces and/or leads 59 and 60 to microprocessor 44 through wire/connector 58. Typically, these leads 59 and 60 would each be connected to separate 10 port of the microprocessor.
  • the microprocessor through the operation of software and/or firmware running in the microprocessor sets the particular IO port high or sets the IO port to one, then the port voltage typically would go high. Consequently, turning on the associated transistor Q33 or Q34 or switch that provides a current flow path from either the power supply through line 56 and/or from capacitor C19, if utilized, through the coil in the relay and the transistor Q33 or Q34 or switch to ground.
  • the relay SR3 or switch may be opened or closed.
  • relay SR3 is a non-latching relay, preferably this relay would be a normally closed relay so that electric power needed to be provided to hold the relay in the open position after an authorized combination and/or key was utilized.
  • the microprocessor port may provide sufficient current to operate the relay. In this instance, the transistor or switch and the power source may be omitted.
  • FIG. 4 illustrating a second embodiment of shunt circuit 50.
  • This circuit illustrates replacing relay SR3 with a semiconductor switch 64, such as a P channel transistor, bipolar or similar integrated switching device.
  • the gate and the drain are shown connected by a resistor 66.
  • resistor 66 By maintaining the gate and the drain at the approximate same voltage, the application of a positive voltage or voltage higher on line 52 than on line 54 would cause switch 64 to conduct.
  • the resistance across lines 52 and 54 and through switch 64 was sufficiently low the circuit would shunt the electricity around or short electronic actuator 46.
  • a single control line or lead 58 is utilized connecting to a port on microprocessor 44.
  • switch 62 When this port is turned on or goes high, switch 62, typically a transistor, turns on or conducts, permitting the high voltage on line 52 to be applied to the gate of transistor 64. By applying a high voltage of the gate of transistor 64 this causes transistor 64 to open or stop conducting thereby disabling shunt circuit 50 and enabling actuator circuit 40 to provide power to electronic actuator 46 whereby the lock may be opened.
  • switch 62 typically a transistor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

La présente invention porte sur un verrouillage électronique comportant un circuit de mise en court-circuit ou de dérivation conçu pour permettre à un opérateur autorisé d'ouvrir le verrouillage électronique et pour empêcher un opérateur non autorisé de l'ouvrir s'il n'a pas introduit une combinaison autorisée. Le verrouillage électronique comprend un élément de verrouillage (22), un boulon (26) supporté par le boîtier (22); un actionneur (46) électronique permettant de retirer le boulon (26) du boîtier (26) lors de la réception d'un signal électronique et une dérivation (50) électronique permettant de détourner le signal électronique provenant de l'actionneur (46) sauf si une combinaison correcte est introduite dans le verrouillage (10) électronique.
PCT/US2000/017880 1999-08-13 2000-08-11 Procede et appareil pour empecher l'ouverture non autorisee d'un verrouillage electronique Ceased WO2001012928A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70513/00A AU7051300A (en) 1999-08-13 2000-08-11 Electronic lock and method for preventing the unauthorized opening thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14886099P 1999-08-13 1999-08-13
US60/148,860 1999-08-13

Publications (1)

Publication Number Publication Date
WO2001012928A1 true WO2001012928A1 (fr) 2001-02-22

Family

ID=22527733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/017880 Ceased WO2001012928A1 (fr) 1999-08-13 2000-08-11 Procede et appareil pour empecher l'ouverture non autorisee d'un verrouillage electronique

Country Status (2)

Country Link
AU (1) AU7051300A (fr)
WO (1) WO2001012928A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019049197A (ja) * 2012-12-19 2019-03-28 ロック・セカンド・エル・エル・シー ロックされた筐体への不必要なアクセスを防止するためのデバイスおよび方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015910A1 (fr) * 1989-06-21 1990-12-27 Ian Robert Symons Serrure electronique
EP0519755A1 (fr) * 1991-06-21 1992-12-23 C & M TECHNOLOGY, INC. Serrure à combinaison électronique à haute degré de sécurité
EP0712983A2 (fr) * 1994-11-21 1996-05-22 Mas-Hamilton Group Serrure à combinaison électronique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015910A1 (fr) * 1989-06-21 1990-12-27 Ian Robert Symons Serrure electronique
EP0519755A1 (fr) * 1991-06-21 1992-12-23 C & M TECHNOLOGY, INC. Serrure à combinaison électronique à haute degré de sécurité
EP0712983A2 (fr) * 1994-11-21 1996-05-22 Mas-Hamilton Group Serrure à combinaison électronique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019049197A (ja) * 2012-12-19 2019-03-28 ロック・セカンド・エル・エル・シー ロックされた筐体への不必要なアクセスを防止するためのデバイスおよび方法
EP3561202A1 (fr) * 2012-12-19 2019-10-30 Lock II, L.L.C. Dispositif et procédés pour empêcher un accès indésirable à une enceinte verrouillée
US10550604B2 (en) 2012-12-19 2020-02-04 Lock Ii, Llc Device and methods for preventing unwanted access to a locked enclosure
US10557285B2 (en) 2012-12-19 2020-02-11 Lock Ii, Llc Device and methods for preventing unwanted access to a locked enclosure
EP3663489A1 (fr) * 2012-12-19 2020-06-10 Lock II, L.L.C. Serrure à alimentation autonome et procédé d'alimentation d'une serrure
US11499342B2 (en) 2012-12-19 2022-11-15 Lock Ii, Llc Device and methods for preventing unwanted access to a locked enclosure
US11613911B2 (en) 2012-12-19 2023-03-28 Lock Ii, Llc Device and methods for preventing unwanted access to a locked enclosure
US12331551B2 (en) 2012-12-19 2025-06-17 Lock Ii, Llc Device and methods for preventing unwanted access to a locked enclosure

Also Published As

Publication number Publication date
AU7051300A (en) 2001-03-13

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