EP0913797A1 - A lock management system - Google Patents
A lock management system Download PDFInfo
- Publication number
- EP0913797A1 EP0913797A1 EP97203404A EP97203404A EP0913797A1 EP 0913797 A1 EP0913797 A1 EP 0913797A1 EP 97203404 A EP97203404 A EP 97203404A EP 97203404 A EP97203404 A EP 97203404A EP 0913797 A1 EP0913797 A1 EP 0913797A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- address
- locks
- control unit
- code word
- 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.)
- Granted
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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
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/27—Individual registration on entry or exit involving the use of a pass with central registration
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/10—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property
- G07F17/12—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property comprising lockable containers, e.g. for accepting clothes to be cleaned
- G07F17/13—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property comprising lockable containers, e.g. for accepting clothes to be cleaned the containers being a postal pick-up locker
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
- Alarm Systems (AREA)
Abstract
Description
- The present invention relates to a lock management system, comprising a control unit and a plurality of locks connected to said control unit, said control unit comprising an address generator, provided for generating addresses for addressing each of said locks, said control unit being further provided for generating control signals for controlling the operation of said locks, each of said locks being provided with a status generator, provided for indicating their actual status and for communicating their actual status to said control unit.
- Such a lock management system is known from EP-A-0700555. In the known system the status generator is formed by a microswitch, which indicates whether the lock is in an open or closed position. That information is communicated to the control unit, which in such a manner knows whether or not the box to which the considered lock belongs, is available or not. The latter enables the control unit to assign a free box to a user, who wishes to use a box in order to store therein some of his goods. In the known system the locks are individually connected to the control unit, each lock having his own address within the unit, so that the latter can manage the availability of each box.
- Lock management systems are used for example in swimming pools, airports, railway stations, hotels, business plants etc., and everywhere where lockable boxes are available to users in order to store therein their personal goods.
- A drawback of the known system is that its installation and any further modification are rather cumbersome. Each lock requires his own wiring to the control unit, as the status information of a dedicated lock has to be supplied to a dedicated input of the control unit, since nearly no intelligence is available at the level of the lock, which is formed by a microswitch. The addition of locks thus requires the placement of additional wiring and of sufficient inputs at the control unit's side.
- It is an object of the present invention to realise a lock management system which is more easy to be modified without requiring additional wiring.
- A lock management system according to the present invention is therefore characterised in that said control unit is connected to a communication bus to which each of said locks are connected in parallel, each of said locks comprising an address decoder provided for decoding addresses supplied to said bus by said address generator and for generating an enabling signal upon decoding among said supplied addresses an address assigned to the lock to which said address decoder belongs, and wherein said control signals comprise a code word annexed to the address assigned to the lock to which the control signal is addressed, said locks further comprising a code word decoder, having an input for receiving said enabling signal and provided for retrieving said code word from said control signal under control of said enabling signal, said code word decoder being further provided for decoding said code word and for generating a command signal based on said code word for operating said lock. Since the locks are connected to a communication bus, the addition of supplementary locks simply requires to connect the latter locks to the bus and no additional separate wiring connecting the lock to the control unit is required. As all locks are now linked to a common bus, the communication between the control unit and each of the locks is realised by means of the addressing of each of the locks. Because each lock has its own address decoder, the address generated by the address generator is decoded by the address decoder which in such a manner can recognise whether or not the code word annexed to the address is destined to the lock to which the address decoder belongs. The enabling signal generated upon recognition of the address enables to retrieve the code word, which is then used to generate the command signals, operating the lock. Contrary to the locks according to the state of the art, intelligence is now available at the level of the lock which enables a communication requiring less wiring and thus less cumbersome to modify.
- A first preferred embodiment of a lock management system according to the present invention is characterised in that each lock is provided with a lock address generator, provided for assigning an address to the lock to which it belongs. This enables to assign the address to each lock in a sequence such as desired by the operator of the system.
- A second preferred embodiment of a lock management system according to the present invention is characterised in that said control unit is provided for generating a series of three successive code words, said code word decoder being provided for generating respective command signals upon decoding of said three respective code words, said lock being provided for being set in a locked mode, a standby mode and a free mode, under control of said first respective command signals. The switching to a standby and a free mode enables to safe power.
- The invention will now be described in more detail by means of the annexed drawings showing an example of a lock management system according to the present invention. In the drawings :
- figure 1 shows schematically an example of a lock management system according to the present invention;
- figure 2 shows a cross-sectional view through a lock as part of the system;
- figure 3 shows a top view of a lock catch as part of the lock;
- figure 4 shows an electrical connection scheme of a lock as part of the system; and
- figure 5 shows schematically an electrical set-up of a control unit as part of the system according to the present invention.
-
- In the drawings a same reference sign has been assigned to a same or analogous element.
- The
lock management system 1 according to the present invention and illustrated in figure 1 comprises acontrol unit 2, for example formed by a PC, connected to acommunication bus 3. According to an alternative embodiment, the PC is connected to a modem and is part of a network. Preferably the communication bus only comprises four wires, two for power supply and two for data communication. A three wire bus could also be applied if the different components are connected to a same earth. A plurality of locks 4-j (j≤1≤J) are connected in parallel to thecommunication bus 3. The total number J of locks to be connected to thebus 3, is determined by the address generating capacity of the address generator, which is part ofcontrol unit 2. If for example the address generator is provided for generating an n-bits address, then J=2n locks can be connected to the bus. - A
token collector 6 is connected to thecontrol unit 2. This token collector is provided for collecting tokens, for example pieces of money or for reading credit cards in such a manner as to determine how much money has been introduced and for communicating the input credit to the control unit. - A user keyboard 5, a printer 7 and a
monitor 8, are also connected to the control unit. The monitor serves to display messages addressed to the user, in order to help him in supplying his instructions or requests via the keyboard 5 to the system. According to another embodiment the keyboard and the monitor could be combined into a touch-screen. The printer serves to furnish tags to the user, indicating him which box has been assigned to him. - In order to enable the operator to monitor the working of the system, an
operator command unit 9, comprising for example a monitor, a printer and a further keyboard, is also connected to thecontrol unit 2. Alarm messages or other relevant information such as the malfunctioning of a lock are also displayed on the command unit. The operator can interfere by means i.a. of his own keyboard. - Figure 2 shows a cross-sectional view through a lock 4-j, fixed to a box as part of a system according to the present invention. The lock comprises a
housing 10, fixed to an inner wall of the box. Alock catch 12 is fixed to thedoor 11 of the box, in such a manner that upon closing the door, the lock cooperates with thelock catch 12, so as to lock the door. Thelock catch 12 has an inclined front side in such a manner that upon closing thedoor 11, and when themagnet 15 withplunger 16 is not energised, the inclined front side of the lock catch pushes the plunger in the magnet. - The electro-
magnet 15 with theplunger 16 is mounted in said housing in such a manner that theplunger 16 engages into a perforation 14 (figure 3), present in saidlock catch 12, when the door is closed. The lock catch is further provided with acavity 13, wherein afirst element 20 of a status generator is housed. Asecond element 21 of said status generator is mounted on amounting plate 19, in such a manner that the first and second element co-operate when the door is closed. Thefirst element 20 is for example formed by a permanent magnet, whereas thesecond element 21 is formed by a reed contact provided for detecting a magnetic field. When thedoor 11 is closed, themagnet 20 is situated near thereed contact 21, so that the latter detects the presence of the magnet and generates a first status signal, indicating the closed status of said lock. When on the other hand the door is open, the reed contact can not detect themagnet 21, and a second status signal indicating the open door status is generated. The status signals are transmitted to the control unit, as will be described hereinafter. Instead of using a magnet and a reed contact, other alternatives are possible such as optical detection or mechanical contacts. The magnetic solution is preferred as it is less vulnerable for vandalism. - A
lock address generator 18, for example formed by a DIP switch is also mounted on themounting plate 19 as well as aprocessing member 17. The use of a DIP switch enables to assign to each lock a dedicated address, taking of course into account that a same address is not assigned twice to different locks. The assignment of a dedicated address to each lock enables the operator to assign the addresses in a sequence which fits with the numbers assigned to the boxes to which the locks belong. - Figure 4 shows an example of an embodiment of the electronic circuit of the
lock 4. The electro-magnet 15 is formed by a solenoid, connected in parallel with adiode 26, for protection purpose. The solenoid has one pole connected to a supply source and the other pole connected to the collector of atransistor 25, which operates as a switch. The base oftransistor 25 is connected, via a resistor for current limiting purpose, to a connector RA1 of theprocessing member 17. The connector RAO of the processingmember 17 is connected to thesecond element 21 of the status generator. The connectors RA2 respectively RA3 of the processingmember 17, are connected via acapacitor 31 and adiode circuitry 34, respectively aresistor 33 to the base respectively the collector of atransistor 32. The collector and the emitter oftransistor 32 are connected to a respective data communication line of thebus 3. Adiode 35 is connected in parallel over the collector and emitter oftransistor 32. A clock circuit 27, provided with acrystal 28, is also connected to the processing member. - The
lock address generator 18, formed by the DIP-switch is connected to the RB inputs of the processingmember 17. In the shown embodiment the DIP-switch is an 8 bits address generator. - The
resistor 33 preferably has a value of 1 MΩ, in order to limit the current which streams from thebus 3 to the processingmember 17. As the different locks are connected in parallel to the bus, the parallel switching of theresistors 33 does not form a too high impedance for the bus and consequently does not affect adversely the data traffic on the bus. - The
capacitor 31 preferably has a value of 10 µ F for keeping the signal high, even when no signal is available on the bus. The capacitor thus not only provides a galvanic dissociation, but also protects the bus for failure of the processing member. - Figure 5 illustrates schematically the control unit as part of a lock management system according to the present invention. The control unit comprises an
internal bus 30 to which amicroprocessor 31 and amemory 32 are connected. Anaddress generator 34 and aninterface 33 are also connected to theinternal bus 30. Thecommunication bus 3 is connected to theinterface 33. - When a user wants to hire a box, he enters a token or a credit card into the
token collector 6. A welcome message followed by a message inviting the user to enter his code word will consequently be displayed on themonitor 8 and the user is invited to select a free box. Either the control unit selects among the available boxes a free one or presents to the user a number of free boxes inviting him to select one. The control unit knows which boxes are free as the status of each lock, such as issued by thestatus generator memory 32. - The user selects one of the proposed boxes or confirms the prepared box by means of the keyboard 5 or the touch screen, if the latter embodiment is available. The
microprocessor 31 will now generate an activation signal, which is supplied to theaddress generator 34, in such a manner that the latter can generate the address of the selected or proposed box. Suppose that the user selects box j, then the address generator will generate address j and supply it to the microprocessor, which will temporarily store it. - If the boxes are open, when not occupied, the microprocessor will wait until he receives the information from the status generator that the door is closed. If on the other hand the boxes are closed when not occupied, the microprocessor will generate a control signal for opening the selected box. That latter control signal is then annexed to the address j and sent via the
interface 33 and thebus 3 to the lock j. The control unit will also activate the printer in order to print a tag indicating the selected box j and if a time limit is set, also the time at which it expires. - In the present embodiment the data slots transmitted to the
communication bus 3 have a fixed time period and 2/3 of the time period is reserved for data originating from the control unit, whereas the remaining 1/3 of the time period is used for data inserted by the addressed lock. Such a set-up facilitates the transmission protocols over the communication bus and at the level of the control unit and the lock. - When the user has placed his personal goods in box j, he will close the latter. The inclined front side of the
lock catch 12 will pushplunger 16 inside themagnet 15, so that the plunger end reaches the upper side of the lock catch. When, due to the inward movement of the door, theplunger 16 facesperforation 14, the plunger will fall into theperforation 14. Thecavity 13 of thelock catch 12 will now be faced opposite thesecond element 21 of the status generator. Thesecond element 21 will thus detect the presence of thefirst one 20 incavity 13. The second element will moreover generate a signal which is supplied to connector RAO of the processingmember 17. The latter will consequently establish that the actual status of lock j has changed into closed status. - Upon assigning lock j to box j to the user, the
control unit 2 has generated address j and has annexed a first code word to said address, indicating the selection of lock j. The address j and the first code word are put on thebus 3 and received by all the locks. The processingmember 17 of each lock comprises an address decoder, provided for decoding the address transmitted to the bus and comparing the latter with the address of the lock, such as set on theDIP switch 18. The address decoders of each of the locks will decode the address available on the bus. However only the address decoder of lock j will recognise address j as his own address and will generate an enabling signal upon decoding said address j. The other address decoders will upon decoding establish that they are not addressed as it is not their own address which is decoded. - The processing
member 17 of each lock also comprises a code word decoder, which is enabled by said enabling signal, generated by the address decoder. The code word decoder is provided for decoding the code word annexed to the address. Thus once the code word decoder has received the enabling signal, the code word annexed to address j will be retrieved and decoded. The decoding of said code word leads to the generation of a command signal based on the received code word so as to operate the lock. - Upon decoding of the first code word, a first command signal is generated, under control of which, the status such as indicated by the status generator, will be read. The actual status i.e. closed door, will now be inserted as a second code word in the message containing the address j, i.e. in the one third time period of the slot allocated to the lock to insert code words.
- The message now comprising address j and the second code word are output at connectors RA3 and 2 in order to be transmitted via the
communication bus 3 and reach the control unit. Upon receipt of that message the control unit will decode the address j and the second code word. The control unit is thus informed that door j of box j is closed. The latter information is stored inmemory 32, in order to memorise that box j has been assigned and is thus no longer available. - Under operating conditions the control unit regularly checks the actual status of each lock in order to verify if their actual status corresponds with the one memorised in
memory 32. For that purpose the control unit has theaddress generator 34 generating subsequently the addresses of each of the J locks. To each jth address the control unit adds a third code word, requesting a read of the status, such as indicated by the processingmember 17. Each of the locks then has to communicate his actual status to the control unit, which can then compare the latter with the one stored in memory. Upon establishing a non-correspondence between the status of a lock i, such as indicated by the processing member, and the one stored inmemory 32, the control unit generates an alarm message, which is presented to theoperator command unit 9, in order to inform the operator that lock j presents an abnormal situation. - When the user now wants to open box j, which has been assigned to him, he will enter his code word and the number j of the lock which has been assigned to him. The control unit checks if the box j has indeed been assigned to the user having presented that code word, in the negative, an error message will be presented to the user, inviting him to try again. The number of attempts is of course limited. If the control unit establishes correspondence between the user and the assigned box j, a message will be presented to the user indicating that box j will be opened.
- The control unit then generates a fourth code word and instructs the
address generator 34 to generate address j. Address j and the fourth code word are then transmitted to thecommunication bus 3, in order to reach box j. Upon decoding address j, the address decoder of lock j will activate the code word decoder of lock j, which will decode the fourth code word. The decoding of the fourth code word will cause the creation of a control signal output on connector RA1, causingtransistor 25 to become conductive. Astransistor 25 is now conductive, thesolenoid 15 is energised and theplunger 16 is pulled out ofperforation 14, thus causing the unlocking of lock j. The opening of the door will cause thefirst element 20 of the status generator to move away from the immediate neighbourhood of thesecond element 21. The status generator will thus indicate the status "door open", which status is communicated to the control unit by introduction of this message in the time slot allocated to address j. The control unit will, upon receipt of the message that door j is open, change the status inmemory 32 so that box j can now be allocated to another user. - The fourth code word will lead to the production of a high level control signal output at RA1 so as to provide sufficient current to pull-up the plunger and switch the lock in an unlocked mode. The control unit however generates thereafter a fifth code word which is also annexed to address j upon decoding the fifth code word, the code word decoder generates a low level control signal, which is sufficient to hold the plunger in the magnet and switch the lock in a standby mode. The plunger is in such a manner lifted up in the magnet for a predetermined time, for example 60's in order to provide the user sufficient time to open box j. After lapse of the predetermined time, the control unit generates a sixth code word, which is also annexed then to address j. Decoding of the sixth code word causes the production of a control signal output at RA1, in order to block
transistor 25 and switch the lock in a free mode. The latter will lead to an interruption of the current throughsolenoid 15, causing theplunger 16 to drop down due to gravity. In such a manner no current is consumed when the door of box j is open. Thus the successive production of the fourth, fifth and sixth code word leads to a minimum power consumption.
Claims (5)
- A lock management system comprising a control unit and a plurality of locks connected to said control unit, said control unit comprising an address generator, provided for generating addresses for addressing each of said locks, said control unit being further provided for generating control signals for controlling the operation of said locks, each of said locks being provided with a status generator, provided for indicating their actual status and for communicating their actual status to said control unit, characterised in that said control unit is connected to a communication bus to which each of said locks are connected in parallel, each of said locks comprising an address decoder, provided for decoding addresses supplied to said bus by said address generator, and for generating an enabling signal upon decoding among said supplied addresses an address, assigned to the lock to which said address decoder belongs, and wherein said control signals comprise a code word annexed to the address assigned to the lock to which the control signal is addressed, said locks further comprising a code word decoder, having an input for receiving said enabling signal and provided for retrieving said code word from said control signal under control of said enabling signal, said code word decoder being further provided for decoding said code word and for generating a command signal based on said code word for operating said lock.
- A lock management system as claimed in claim 1, characterised in that each lock is provided with a lock address generator, provided for assigning an address to the lock to which it belongs.
- A lock management system as claimed in claim 1 or 2, characterised in that said control unit is provided for generating a series of three successive code words, said code word decoder being provided for generating respective command signals upon decoding of said three respective code words, said lock being provided for being set in a locked mode, a standby mode and a free mode, under control of said first respective command signals.
- A lock management system as claimed in anyone of the preceding claims, characterised in that said communication bus comprises two wires for power supply purposes and two wires for data communication.
- A lock management system as claimed in anyone of the preceding claims, characterised in that said status generator comprises a detector for detecting that said lock is switched in a closed position.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97203404T ATE201785T1 (en) | 1997-11-03 | 1997-11-03 | LOCK MANAGEMENT SYSTEM |
DE69705046T DE69705046D1 (en) | 1997-11-03 | 1997-11-03 | Lock management system |
EP97203404A EP0913797B1 (en) | 1997-11-03 | 1997-11-03 | A lock management system |
DE0913797T DE913797T1 (en) | 1997-11-03 | 1997-11-03 | Lock management system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97203404A EP0913797B1 (en) | 1997-11-03 | 1997-11-03 | A lock management system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0913797A1 true EP0913797A1 (en) | 1999-05-06 |
EP0913797B1 EP0913797B1 (en) | 2001-05-30 |
Family
ID=8228896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97203404A Expired - Lifetime EP0913797B1 (en) | 1997-11-03 | 1997-11-03 | A lock management system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0913797B1 (en) |
AT (1) | ATE201785T1 (en) |
DE (2) | DE913797T1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019126740A1 (en) * | 2017-12-22 | 2019-06-27 | Alibaba Group Holding Limited | An on-chip communication system for neural network processors |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3838395A (en) * | 1972-12-04 | 1974-09-24 | Commplex Inc | Electronic variable combination lock and monitoring system |
EP0205691A1 (en) * | 1985-06-17 | 1986-12-30 | Leonard Charles Brown | Article dispensing apparatus |
US4893705A (en) * | 1987-12-04 | 1990-01-16 | Brown Leonard C | Vending machine having plural compartments which are independently selected and controlled |
EP0570195A1 (en) * | 1992-05-13 | 1993-11-18 | Abloy Security Ltd. Oy | A method for providing control of the component devices of an electromechanical locking system |
DE4443391A1 (en) * | 1994-12-06 | 1996-06-13 | Aeg Sensorsysteme Gmbh | Microprocessor-controlled locking system with multiple locks |
FR2732139A1 (en) * | 1995-03-24 | 1996-09-27 | Lpe Sa | Automated locker system for school or sports club use |
-
1997
- 1997-11-03 EP EP97203404A patent/EP0913797B1/en not_active Expired - Lifetime
- 1997-11-03 AT AT97203404T patent/ATE201785T1/en active
- 1997-11-03 DE DE0913797T patent/DE913797T1/en active Pending
- 1997-11-03 DE DE69705046T patent/DE69705046D1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3838395A (en) * | 1972-12-04 | 1974-09-24 | Commplex Inc | Electronic variable combination lock and monitoring system |
EP0205691A1 (en) * | 1985-06-17 | 1986-12-30 | Leonard Charles Brown | Article dispensing apparatus |
US4893705A (en) * | 1987-12-04 | 1990-01-16 | Brown Leonard C | Vending machine having plural compartments which are independently selected and controlled |
EP0570195A1 (en) * | 1992-05-13 | 1993-11-18 | Abloy Security Ltd. Oy | A method for providing control of the component devices of an electromechanical locking system |
DE4443391A1 (en) * | 1994-12-06 | 1996-06-13 | Aeg Sensorsysteme Gmbh | Microprocessor-controlled locking system with multiple locks |
FR2732139A1 (en) * | 1995-03-24 | 1996-09-27 | Lpe Sa | Automated locker system for school or sports club use |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019126740A1 (en) * | 2017-12-22 | 2019-06-27 | Alibaba Group Holding Limited | An on-chip communication system for neural network processors |
CN111357016A (en) * | 2017-12-22 | 2020-06-30 | 阿里巴巴集团控股有限公司 | Communication system on chip for neural network processor |
US10872291B2 (en) | 2017-12-22 | 2020-12-22 | Alibaba Group Holding Limited | On-chip communication system for neural network processors |
US11205109B2 (en) | 2017-12-22 | 2021-12-21 | Alibaba Group Holding Limited | On-chip communication system for neural network processors |
CN111357016B (en) * | 2017-12-22 | 2023-07-25 | 阿里巴巴集团控股有限公司 | On-chip communication system for neural network processor |
Also Published As
Publication number | Publication date |
---|---|
DE69705046D1 (en) | 2001-07-05 |
DE913797T1 (en) | 2000-06-29 |
EP0913797B1 (en) | 2001-05-30 |
ATE201785T1 (en) | 2001-06-15 |
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