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EP0382412A2 - Locking system - Google Patents

  • ️Thu Aug 16 1990

EP0382412A2 - Locking system - Google Patents

Locking system Download PDF

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Publication number
EP0382412A2
EP0382412A2 EP90301075A EP90301075A EP0382412A2 EP 0382412 A2 EP0382412 A2 EP 0382412A2 EP 90301075 A EP90301075 A EP 90301075A EP 90301075 A EP90301075 A EP 90301075A EP 0382412 A2 EP0382412 A2 EP 0382412A2 Authority
EP
European Patent Office
Prior art keywords
bolt
dead
locking system
locking
coded information
Prior art date
1989-02-09
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.)
Withdrawn
Application number
EP90301075A
Other languages
German (de)
French (fr)
Other versions
EP0382412A3 (en
Inventor
Michael Wong Siu On
Kin Shing Yeung
Simon Wong Kwok Keung
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.)
Citic Industries Ltd
Original Assignee
Citic Industries Ltd
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.)
1989-02-09
Filing date
1990-02-01
Publication date
1990-08-16
1990-02-01 Application filed by Citic Industries Ltd filed Critical Citic Industries Ltd
1990-08-16 Publication of EP0382412A2 publication Critical patent/EP0382412A2/en
1991-10-09 Publication of EP0382412A3 publication Critical patent/EP0382412A3/en
Status Withdrawn legal-status Critical Current

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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
    • G07C9/00658—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
    • G07C9/00722—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 magnetic components, e.g. magnets, magnetic strips, metallic inserts
    • G07C9/00738—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 magnetic components, e.g. magnets, magnetic strips, metallic inserts sensed by Hall effect devices
    • 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
    • G07C9/00674—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 switch-buttons
    • G07C9/0069—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 switch-buttons actuated in a predetermined sequence

Definitions

  • the dead-bolt 13 In the region of its forward end the dead-bolt 13 is provided with a peripheral groove 22 in which can engage an arm portion 23 of a rotatable latch 24.
  • the latch 24 is connected to a tension spring 25 which urges the arm portion 23 in a direction towards the dead-bolt 13.
  • the arm portion 23 is connected to an electrical solenoid 26 which constitutes the electrical operating system of the locking mechanism and which is energised in response to the "open" command signal from the electronic control system later described.
  • the dead-bolt 13 may be hollow, or partly hollow, and the tension spring 21 can be located within the hollow dead-bolt 13 so as to form a compact unit.
  • This system is the capability of being able to use a by-pass code to override the card encoding system. This facility is particularly useful in the case when the person who wants to gain entry has lost or damaged his or her card 28. The person has the option to use the by-pass code together with the four digit entry code to gain access.
  • the system is provided with the facility to be able to connect an external power source to the system through a connector (not shown) so that the system can be energised.
  • the external power source connector will include means for preventing short circuiting of the system during normal operation of the system.
  • a switch is provided for selecting the working channel.
  • Loss of entry code memory in the micro-processor can happen but is unlikely due to the stand-by battery. However, if the entry code is lost, access can be made with a valid card 28 and a valid by-pass code entry.
  • the electrical operating system can comprise two solenoids 26, one of which is used as a stand-by solenoid. Selecting one or the other solenoid can be effected through a switch provided on the central controller 34.
  • the door 16 can be provided with a conventional door handle 41 to operate a conventional latch-bolt 42 and with an auxiliary latch-bolt 43.

Landscapes

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

Abstract

A door locking system which consists of a mechanical locking mechanism (10), such as a dead-bolt (13), releasable by an electrical operating means (26), such as a solenoid, controlled by an electronic control system (11) provided with means (27) for receiving coded information from a card (28), means (31) for decoding the coded information, a master control module (12), and a by-pass override system (35, 37, 38) for receiving coded information for overriding the information receiving and decoding means (27, 31).

Figure imgaf001

Description

  • This invention relates to a locking system of the kind in which a mechanical locking mechanism can be operated by an electrical operating system controlled by an electronic control system provided with means for receiving coded information and means for decoding the coded information, or by mechanical means.

  • There are many different types of known electronically controlled locking devices which utilise coded information in order to effect release of the locking mechanism, such coded information being supplied by a manually operated touch-pad or push-button system and/or a card bearing coded information.

  • A disadvantage of the known electronically controlled locking devices is that if the electronic control system suffers a malfunction, or if the entry code is forgotten, or if the card bearing coded information is lost or damaged, it is necessary to utilise a mechanical key in order to release the mechanical locking mechanism. The provision of a mechanical key creates an inconvenience in that the key must be kept in a safe accessible place at all times so that access to it can be had if the electronic control system fails for any reason. Such a key must either be carried by a person at all times or left in a safe place in a remote establishment. This is highly inconvenient.

  • The major factors affecting malfunctioning of known locking systems are the failure of individual electronic components and the electrical operating system. Other failures causing malfunctions that make normal unlocking impossible are power failure, a defective rectifier which rectifies the mains electrical power source, voltage reduction of the stand-by battery, loss of electronic memory, open/short circuiting of the operating solenoid, card decoder circuit failure etc.

  • Other factors making unlocking impossible are magnetic corruption on the card, loss of or damage to a card and forgotten entry code.

  • According to the present invention there is provided a locking system comprising a mechanical locking mechanism releasable by an electrical operating means controlled by an electronic control system which includes means for receiving coded information, means for decoding the coded information, a master control module, and a by-pass override system for receiving coded information for overriding the information receiving and decoding means.

  • Preferably the by-pass override system comprises a decoder for receiving signals from a key-pad forming part of the means for receiving coded information and which is used for the input of coded by-pass information, said decoder being electrically connected to a comparator.

  • The override system preferably also includes a by-­pass code encoder.

  • The mechanical locking mechanism preferably comprises a dead-bolt, resilient means for urging the dead-bolt to its inoperative position, a latch mechanism for latching the dead-bolt in its operative position, and said electrical operating means comprises an electrical solenoid for operating the latch mechanism to release the dead-bolt.

  • An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawings, in which:-

    • Figure 1 is a diagrammatic perspective view of the mechanical locking mechanism of the locking system and the electrical operating system;
    • Figure 2 is a diagrammatic perspective view of the edge portion of a door provided with the locking system;
    • Figure 3 is a diagrammatic circuit diagram of the electronic control system: and
    • Figure 4 is a block diagram of the stages of operation of the electronic control system.

  • The locking system comprises three basic units which comprise an electrically actuated mechanical locking mechanism 10, an access control unit 11, a

    master control module

    12 and a power source.

  • The electrically actuated mechanical locking mechanism 10 is shown in Figures 1 and 2 and consists of a dead-

    bolt

    13 which when in the engaged or locked position acts as a shear pin and it is moved to the engaged or locked position by a rotatable thumb-

    turn

    15 mounted on the

    door

    16 or alternatively on the door frame (not shown) depending upon whether the casing 14 is mounted on the

    door

    16 as shown in Figure 2 or on the door frame. The thumb-

    turn

    15 is provided on a

    spindle

    17 having at its other end an

    arm

    18 which engages against a pin 19 which is connected to and extends transversely of the dead-

    bolt

    13. The pin 19 extends through a longitudinally extending

    slot

    20 provided in the casing 14. The rear end of the dead-

    bolt

    13 is connected to a

    tension spring

    21. In the region of its forward end the dead-

    bolt

    13 is provided with a

    peripheral groove

    22 in which can engage an

    arm portion

    23 of a

    rotatable latch

    24. The

    latch

    24 is connected to a

    tension spring

    25 which urges the

    arm portion

    23 in a direction towards the dead-

    bolt

    13. The

    arm portion

    23 is connected to an

    electrical solenoid

    26 which constitutes the electrical operating system of the locking mechanism and which is energised in response to the "open" command signal from the electronic control system later described.

  • The dead-

    bolt

    13 may be hollow, or partly hollow, and the

    tension spring

    21 can be located within the hollow dead-

    bolt

    13 so as to form a compact unit.

  • When the thumb-

    turn

    15 is rotated anti-clockwise as viewed in Figure 1, the

    arm

    18 engages the pin 19 and moves the dead-

    bolt

    13 towards the locking position against the force of the

    spring

    21 which is thus tensioned. During this movement the

    arm portion

    23 of the

    latch

    24 rides on the peripheral surface of the dead-

    bolt

    13 and when the dead-

    bolt

    13 is in the locked position the

    arm portion

    23 engages in the

    peripheral groove

    22 and is retained therein by the

    tension spring

    25. The

    arm portion

    23 when engaged in the

    groove

    22 prevents the dead-

    bolt

    13 being withdrawn. In this position rotation of the thumb-

    turn

    15 will not move the dead-

    bolt

    13.

  • When the

    solenoid

    26 is energised in response to the "open" command signal from the electronic control system the

    arm portion

    23 is moved against the force of the

    spring

    25, thus tensioning the

    spring

    25, and is disengaged from the

    groove

    22. The dead-

    bolt

    13 is then moved to the unlocked position by the

    tension spring

    21.

  • In order to unlock the door from the inside this can be achieved by having a mechanical linkage connected to the mechanical locking mechanism 10 to override the electronic locking system or alternatively an electrical switch can be provided inside the premises to energise the

    solenoid

    26 direct.

  • The

    solenoid

    26 is controlled by an electronic control system as shown in Figure 3. This system comprises a card reader 27 for reading coded information provided on a

    card

    28. The

    card

    28 has a

    matrix pattern

    29 with the matrix being formed of a material different to that of which the

    card

    28 is formed. The card reader 27 has a plurality of

    Hall effect elements

    30 arranged in the same pattern as the

    matrix pattern

    29. The card reader 27 is in connection with a

    card decoder

    31 which comprises a

    wiring arrangement

    32 corresponding to a specific code pattern and

    logic circuitry

    33 for decoding. The card reader 27 is connected to a

    central controller

    34 which comprises a series of logic gates and which has an output for conveying a signal to the

    solenoid

    26. The

    central controller

    34 is housed at a remote location within the building.

  • The electronic control system is also provided with a by-pass code override system for overriding the card reader 27 and

    card decoder

    31. The by-pass system comprises a key-

    pad

    35 having twelve push-button or touch-

    pads

    36. Ten of the push-button or touch-

    pads

    36 are assigned for numbers 0 to 9 and two of them are assigned for function, such as "programme" and "enter". The key-

    pad

    35 is connected to a

    key decoder

    37 which consists of a 10 to 4 line priority encoder and a 16 bits register. The

    key decoder

    37 is connected to a

    comparator

    38 which consists of two 8-bit magnitude comparators and the

    comparator

    38 is connected with the

    central controller

    34 and with a by-

    pass code encoder

    39 which is made up of four 4-bit rotary switches 40.

  • The card reader 27 and key-

    pad

    35 will be located on the outside of the premises. Access to the premises can normally be made by simply entering the

    card

    28 in the card reader 27 followed by entering a four digit entry code via the key-

    pad

    35. The entry code can be user programmable by means of the key-

    pad

    35. Change of entry code can only be effected with a

    valid card

    28 and a valid by-pass code entry.

  • One of the main features of this system is the capability of being able to use a by-pass code to override the card encoding system. This facility is particularly useful in the case when the person who wants to gain entry has lost or damaged his or her

    card

    28. The person has the option to use the by-pass code together with the four digit entry code to gain access.

  • Also, if the card reader 27 fails for any reason, the person can adopt this procedure to gain entry.

  • The by-pass code can be user programmable and stored in the central controller.

  • It is possible for the main electrical supply to fail and for a voltage reduction in the stand-by battery to occur simultaneously. To prevent users from being unable to unlock the door if such failures take place the system is provided with the facility to be able to connect an external power source to the system through a connector (not shown) so that the system can be energised. The external power source connector will include means for preventing short circuiting of the system during normal operation of the system. In order to cater for the remote possibility of failure of the

    solenoid

    26 due to open or short circuiting, or failure of the micro-computer in the

    central controller

    34, a switch is provided for selecting the working channel.

  • The

    central controller

    34 accommodates duel channel control circuitry and a set of DIP switches. A VLSI micro-processor and a solenoid energising circuit constitutes one channel and the other channel acts as a stand-by supporting circuit. The micro-processor interfaces and processes all the signals generated by the card reader 27, key-

    pad

    35. Should a malfunction of any one of the components in the circuit occur the stand-by supporting channel can be selected in the access control unit to gain access.

  • The four digit by-pass code is user programmable by means of the DIP switches. There is no restriction on the number of changes which can be made of code selection.

  • Loss of entry code memory in the micro-processor can happen but is unlikely due to the stand-by battery. However, if the entry code is lost, access can be made with a

    valid card

    28 and a valid by-pass code entry.

  • The electrical operating system can comprise two

    solenoids

    26, one of which is used as a stand-by solenoid. Selecting one or the other solenoid can be effected through a switch provided on the

    central controller

    34.

  • The

    door

    16 can be provided with a

    conventional door handle

    41 to operate a conventional latch-

    bolt

    42 and with an auxiliary latch-

    bolt

    43.

  • The stand-by battery preferably comprises a rechargeable battery which is constantly charged by a charging circuit.

Claims (10)

1. A locking system comprising a mechanical locking mechanism (10) releasable by an electrical operating means (26) controlled by an electronic control system (11) which includes means (27) for receiving coded information, means (31) for decoding the coded information, a master control module (12), and a by-pass override system (35, 37, 38) for receiving coded information for overriding the information receiving and decoding means (27, 31).

2. A locking system as claimed in claim 1, in which the by-pass override system (35, 37, 38) comprises a decoder (37) for receiving signals from a key-pad (35) forming part of the means for receiving coded information and which is used for the input of coded by-­pass information, said decoder (37) being electrically connected to a comparator (38).

3. A locking system as claimed in claim 1 or claim 2, in which the by-pass override system includes a by-pass code encoder (39).

4. A locking system as claimed in any preceding claim, in which the electronic control system (11) also includes a card reader (27) for reading a card (28) provided with a matrix pattern (29) forming coded information, said card reader (27) having a plurality of Hall effect elements (30) arranged in the same pattern as the matrix pattern (29), said means (31) comprising a card decoder provided with a logic circuit (33) and connected to a central controller (34) whose output is supplied to the electrical operating means (26).

5. A locking system as claimed in any preceding claim, in which the mechanical locking mechanism (10) comprises a dead-bolt (13), resilient means (21) for urging the dead-bolt (13) to its inoperative position, a latch mechanism (23, 24, 25) for latching the dead-bolt (13) in its operative position, and said electrical operating means comprises an electrical solenoid (26) for operating the latch mechanism (23, 24, 25) to release the dead-bolt (13).

6. A locking system as claimed in claim 5, in which the dead-bolt (13) is moved to its locking position by a rotatable thumb-turn (15) provided on a spindle (17) having an arm (18) which engages a pin (19) connected to and extending transversely of the dead-bolt (13).

7. A locking system as claimed in claim 5 or claim 6, in which the dead-bolt (13) is provided with a peripheral groove (22) in which an arm portion (23) of the latch mechanism engages when the dead-bolt (13) is in its operative position.

8. A locking system as claimed in any one of claims 5 to 7, in which a further stand-by solenoid (26) is provided which can be selected by a switch provided in the central controller (34).

9. A locking system as claimed in any preceding claim, in which a mechanical linkage is connected to the locking mechanism (10) to override the electronic locking system to enable the mechanical locking mechanism (10) to be unlocked.

10. A locking system as claimed in any one of claims 1 to 8, in which an electrical switch is provided to energise the electrical operating means (26) to enable the mechanical locking mechanism (10) to be unlocked.

EP19900301075 1989-02-09 1990-02-01 Locking system Withdrawn EP0382412A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8902951 1989-02-09
GB898902951A GB8902951D0 (en) 1989-02-09 1989-02-09 Locking system

Publications (2)

Publication Number Publication Date
EP0382412A2 true EP0382412A2 (en) 1990-08-16
EP0382412A3 EP0382412A3 (en) 1991-10-09

Family

ID=10651423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900301075 Withdrawn EP0382412A3 (en) 1989-02-09 1990-02-01 Locking system

Country Status (2)

Country Link
EP (1) EP0382412A3 (en)
GB (1) GB8902951D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911626A1 (en) * 2007-01-23 2008-07-25 Jozef Klima Blocking system e.g. lock, reinforcing device for door of dwelling, has closed circuit corresponding to extraction position in which part is extracted from cavity that is formed in engaged dead-bolt of lock to release bolt from entire block

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818239A (en) * 1973-06-11 1974-06-18 Schlage Lock Co Selective switch actuator
US4112292A (en) * 1976-08-17 1978-09-05 Access Control Systems Proprietary Limited Magnetic identification apparatus
US4148092A (en) * 1977-08-04 1979-04-03 Ricky Martin Electronic combination door lock with dead bolt sensing means
AU538296B2 (en) * 1980-12-11 1984-08-09 General Motors-Holden's Automotive Limited Magnetic key system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818239A (en) * 1973-06-11 1974-06-18 Schlage Lock Co Selective switch actuator
US4112292A (en) * 1976-08-17 1978-09-05 Access Control Systems Proprietary Limited Magnetic identification apparatus
US4148092A (en) * 1977-08-04 1979-04-03 Ricky Martin Electronic combination door lock with dead bolt sensing means
AU538296B2 (en) * 1980-12-11 1984-08-09 General Motors-Holden's Automotive Limited Magnetic key system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911626A1 (en) * 2007-01-23 2008-07-25 Jozef Klima Blocking system e.g. lock, reinforcing device for door of dwelling, has closed circuit corresponding to extraction position in which part is extracted from cavity that is formed in engaged dead-bolt of lock to release bolt from entire block

Also Published As

Publication number Publication date
GB8902951D0 (en) 1989-03-30
EP0382412A3 (en) 1991-10-09

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