CN1461995A

CN1461995A - Method for rewriting key card for induction electronic door lock

Info

Publication number: CN1461995A
Application number: CN 02121090
Authority: CN
Inventors: 李存进; 李长鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2003-12-17

Abstract

A method for rewriting the induction-type key card by user itself to open the induction-type electronic lock of door features that when said electronic lock is initialized by an initializing card equipped to the lock, a random number generated by the lock software is used as the cipher to be written in the initializing card. The card is converted to an authorized card, which is then used to start the care-preparing program of lock to generate a new random number, obtaining a customized key card.

Description

A kind of method of rewriting key card for induction electronic door lock

The present invention proposes a kind of method of making the induction key card by oneself, particularly a kind of method that the key card password is rewritten in self-control on induction-type electronic door lock.

Electronic lock is owing to have more than one hundred million times password combination, thereby higher confidentiality and serviceable life are arranged than mechanical lock, more and more be subjected to the welcome of user and manufacturer, but making the work of rewriting the key card password must the personnel by special training carry out on other clip making machine, perhaps the factory by lock provides the card of the password with unique series number, before door lock uses, recognize and read to deposit in by lock core, the right of making key card can not be given the owner of door lock fully, bring many inconvenience and doubt for the owner of door, although the repetition rate of coding of electronic lock is extremely low, the reliability height, and the right of system key card is not grasped by the lock owner fully, makes the people worry that still the possibility of being retained or duplicating standby card is arranged.

ZL98201468 (CN2330748Y) autonomous type electronic password lock, what use is the Contact Type Ic Card that does not have logical encrypt, produce key cipher by random code generator, provide and whenever open once the lock function of a key cipher of change automatically, to prevent that key card is replicated the possibility of giving away secrets, and cooperate keyboard to carry out the removing or the preparation of key card, thereby realized in preparation or removed on the key autonomous, but its key card of selecting for use has seemed backward, and join, changing key card need control through keyboard operation, keyboard mode makes the appearance and modeling that cost increases and influence is locked of lock, and operation is bothersome.

The objective of the invention is to design a kind of method that can make rewriting induction key card by the user by oneself, the encryption of its key card is made and needn't be undertaken by professional and clip making machine, just the wish by owner can be revised change at any time on this lock body, need not to remember any password, needn't be by keyboard operation, do not retrain the appearance design moulding of lock, easy and simple to handle, allow the user become unique owner of electronic lock.

The object of the present invention is achieved like this, utilizing between induction-type electronic door lock and the induction IC-card is the characteristic of bi-directional data message exchange, prepare the induction IC-card of two kinds of different purposes to induction-type electronic door lock, one is used for authorizing fabrication, one is used for opening the door, in authorization card, preserve the system password of this lock, can start the fabrication program of this lock with it, and the generation of authorization card is to be rewritten by the initialized card that is equipped with when locking out factory software in lock to be transformed, owner by lock operates, each lock can only produce one, the key card of the usefulness of opening the door can be made 100 by one, its operation of making/writing password is also started by homemade authorization card by the lock owner to be carried out, and has so just realized allowing the user become the unique owner's of electronic lock imagination.

Further set forth the fabrication process of this lock below in conjunction with accompanying drawing

Accompanying drawing 1 is common induction IC-card cut-away view

1 inductive coil, 2 antennal interfaces, 3 control chips, 4. storeies among the figure

Accompanying drawing 2 is a kind of induction-type electronic door lock control circuit structural drawing

Contactless card claims radio frequency induction card again, is made up of inductive coil 1, antennal interface 2, control chip 3 and storer 4, and its principle of work is as follows:

The induction IC-card is a kind of passive electronic, receive the electromagnetic wave that sends on the radio circuit in the self-locking, be subjected to induction to produce electromotive force, other parts for card are powered behind the circuit rectifying and wave-filtering in blocking, exchanges data between radio frequency control chip in the lock and the induction IC-card is two-way, and the storer 4 in the IC-card chip is electricity consumption readable/writeable memory (E ²PROM), give an order and data to card by the radio frequency control chip of locking, finish control and operation to IC-card, IC-card is by the inductive coil of self, password that reception door lock radio frequency control chip transmits and the password of Ka Neicunchuqu compare, if identical then IC-card will be according to the definition of the 0th district's IC-card mode of operation configuration words, the random cipher information of card internal storage first to the 6th district storage is sent signal with the form circulation of modulated electromagnetic wave, the radio frequency control chip of Gong locking receives, identification, open clutch coupling by back start-up control order or driving circuit, open the door by lower handle, inconsistent as the password that IC-card is received with the information password of card stored, then refuse to send information to the radio frequency control chip, the control that the radio frequency control chip is then accepted central microprocessor in the lock is sent to IC-card and is ceased and desisted order, and IC-card is quit work.

Utilize the above-mentioned characteristic of induction IC-card, the process of being made by oneself authorization card and key card by the lock owner is as follows:

Be locked in when dispatching from the factory and be equipped with one and have only the initialized card of special color sign and do not write the key card of password by several of customer demand, before after being locked in successful installation, needing to enter use, at first the owner by lock carries out initialization to lock, lock is powered up (touching microswitch by button or handle) activate the radio frequency operation circuit in the lock, make it send radiofrequency signal, this moment, the movement initialized card started initialize routine before the induction window, door lock when obtaining initialization information by the software generation is enough big in the lock random number (for example 2 ⁴⁰Random number) is written in the storer of lock and initialized card as system password, and automatically this initialized card rewriting is become the unique authorization card of this lock, and make the function of initializing permanent ground fault of this initialized card, meanwhile started the fabrication program, make lock enter the state of system key card, can begin to make key card this moment, with key card be put into the induction window before, in effective six second time, produce and specify another group random cipher to be written to the E of key card as key cipher by software in the lock ²In the prom memory, one of every system was delayed time six seconds, up to the actual needs number of finishing the user, if middle the pause above six seconds, lock just stops the fabrication program, changes into the dormant state of lock, opens the door if wish after fabrication work is finished, only need locking electricity back brush key card, just enter password identification check and correction state, the random cipher of preserving in information password confirming and lock body circuit chip is identical, just starts driving circuit automatically and opens the door.

Thereafter make if desired or when rewriting the key card password, at first to door lock power on (touching microswitch) by button or handle make the outside emitting radio frequency signal of radio frequency induction circuit in the door lock, the induction window of authorization card being pressed close on the outer lock body carries out data information exchange then, if this authorization card is identical with the system password of last stored appointment in the lock, just start the fabrication program, simultaneously new random cipher is rewritten in the authorization card, if difference then refuse to make a response.

Provide the fabrication mode of authorization card to compare with the clip making machine that uses special use or by manufacturer, electronic lock with this self-control authorization card mode has an enormous advantage, the user has autonomy completely, because authorization card is not to be provided by lock manufacturing plant, its generation is also grasped by the user, make it have uniqueness and confidentiality, authorization card all can produce and specify a random cipher that can not repeat and duplicate by software in locking in each the use, write in the lock respectively and the E of authorization card as system password ²With this is phase-locked related, like this, authorization card is operated generation by the user among the PROM, and what write is one group 2 ⁴⁰The random cipher of data, authorization card of every use, this numeric data code will be done once and rewrite, and when rewriting key card with the fabrication program of authorization card startup lock, also be one group 2 ⁴⁰Random data is written in the key card that opens the door, encryption is good, can't be decrypted and duplicate, there is key card to lose when realizing, user oneself can use homemade authorization card to start the fabrication program at any time and rewrite key card again, needn't be for losing key card or wanting to rewrite password and seek help from manufacturer or after sale service unit.

This method need not operation keyboard and any password of memory, needn't worry to have the existence of another authorization card, the user becomes the real sole owner of lock, thisly change into authorization card control automatically with initialized card and write/change the method for key card of opening the door, confidentiality height not only, also greatly reduce the cost of total system, be particularly suitable in the induction-type electronic door lock of family door or antitheft door employing.

Claims

1. the method for a rewriting key card for induction electronic door lock, formed by radio frequency induction window and contactless card on lock inner control circuit, the lock body, it is characterized in that with initialized card lock being carried out initialization earlier, in initialization procedure, produce a random number by software in the lock, be written in the initialized card as system password, and this initialized card converted to the unique authorization card of this lock, start the fabrication program of this lock again with this authorization card, produce in new random number is written to contactless card as key cipher the storer and produce key card.

2. by aforesaid right requirement 1 described induction-type electronic door lock, be not equipped with authorization card when it is characterized in that originally locking out factory, initialized card just for good and all loses function of initializing once rewriting.