CN2338457Y

CN2338457Y - Electronic intelligent safe with puzzle lock

Info

Publication number: CN2338457Y
Application number: CN 98203466
Authority: CN
Inventors: 赵中远
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-17
Filing date: 1998-04-17
Publication date: 1999-09-15
Anticipated expiration: 2008-04-17

Abstract

The utility model discloses an electronic intelligent safe with a cipher controlled by a single-chip computer. The utility model uses an IC card as an electronic key, and works in the mode of using the single-chip computer for automatic and random coding. Accordingly, at the time of use, users need not input and remember the cipher, and need no independent card reader. The utility model has the advantages of simple structure and convenient use, is used for various occasions, and especially suitable for the occasion of frequent change of users, such as the electronic intelligent safe with a cipher is used in the guest rooms of hotels and restaurants.

Description

The electronic cipher intelligent coffer

The utility model relates to a kind of electronic password safe of one-chip computer control, especially adopts the cipher safe of integrated circuit card (abbreviation IC-card) as electron key.

Existing cipher safe has a large amount in variety, and divides from mode of operation, and button, magnetic card type are arranged, and mostly adopts button at present.Use novel immediate prior art to be one to be called the Chinese utility model patent of " electronics magnetic card cipher safe " with this, the patent No.: 94247653.0, notice of authorization number: CN2215574Y, this utility model has button and the magnetic card dual operation mode can be selected for use for the user.In the prior art, button operation more complicated is used inconvenience, and it requires the user to learn password by heart.In the ordinary course of things, the password figure place is many, is not easy to memory, and figure place has been lacked, and is easy to again be separated brokenly by others.In actual use, the situation that the user forgets Password often takes place, therefore, China's related standards regulation, electronic cipher formula strongbox must have the unpacking password of second cover.In the prior art, the second cover password needs the people to remember in the same old way, and therefore the possibility that passes out of mind is also arranged.The magnetic card type strongbox, though simple to operate, do not need user's memory cipher, the Reading and writing instrument structure of magnetic card is complicated, and linking to each other with single-chip microcomputer needs special interface circuit.In addition, magnetic card is to come store information by magnetic medium, and under the effect of high-intensity magnetic field, the information on it will be lost, and therefore, magnetic card is replaced by IC-card just gradually.

The purpose of this utility model provides electronic password safe a kind of simple in structure, easy to use, and the user must not import and memory cipher, just can carry out the open and close operation to strongbox.

To achieve these goals, the utility model adopts IC-card as electron key, the very simple IC-card deck of structure directly links to each other with the mouth line of single-chip microcomputer, single-chip microcomputer can carry out read-write operation by deck to IC-card easily, and password is to adopt the random coded mode to write IC-card automatically by single-chip microcomputer.

Because the utility model has adopted IC-card as electron key, and adopt single-chip microcomputer random coded mode, must not import and memory cipher the IC-card autocoding, therefore, compared with prior art, the utility model is simple in structure, cost of production is lower, and is very easy to use.Compare with magnetic card, password is difficult for losing.The utility model can use under various occasions, and the occasion that is particluarly suitable for some frequent conversion users is used, and is very suitable as the guest room strongbox as hotel, restaurant.Another advantage of the present utility model is that this has realistic meaning in occasions such as hotel, restaurants for the realization one card for multiple uses provides possibility.

The utility model is described in further detail below in conjunction with specific embodiments and the drawings.

Fig. 1 is the body structure figure of embodiment.

Fig. 2 is the structure chart of the chamber door retaining mechanism of embodiment.

Fig. 3 be embodiment be the structured flowchart of control core circuit with the single-chip microcomputer.

In structure chart illustrated in figures 1 and 2, the casing of safety box is by shell 1 with outside being installed in Chamber door 2 on the shell 1 forms. At chamber door 2 handle 3 and IC-card deck 4 are installed. Deck 4 is Electric elements of producing according to general international standard, its inside be 8 can with IC-card on collection Become the contacted contact of circuit pin and a pair of additional length to open or normally-closed contact. On the deck 4 each The contact according to using needs, links to each other with the control circuit board that is installed in box house. One of dead bolt 5 End is connected with tooth bar 6 and is installed on the chamber door 2 by guide pin bushing 8, tooth bar 6 be engaged with can with handle 3 The gear 7 of interlock, turning handle 3 is removable dead bolt 5 like this. Electricity also is installed on chamber door 2 Magnetic padlock fastens 9, is used for limiting the movement of dead bolt 5.

In the structured flowchart of control circuit shown in Figure 3, the core of control circuit is single-chip microcomputer 10. What present embodiment was selected is the AT89C51 single-chip microcomputer that atmel corp produces, its software and INTEL Corp. 8051 single-chip microcomputer compatibilities. But its advantage is its inside has an erasable flash memory of 4K electricity consumption, This 4K flash memory can be by the user erasable 1000 times, and is very easy to use. With single-chip microcomputer 10 phases What connect has a memory 11, and this is a serial EEPROM memory, and power down can obliterated data yet, uses Store password and some status informations. The clock line of IC-card deck 4 and data wire draw by its outside Pin directly links to each other with the mouth line of single-chip microcomputer 10, and its additional normally opened contact is serially connected in resetting of single-chip microcomputer 10 In the circuit, so whenever insert an IC-card, single-chip microcomputer 10 just resets once, has saved watchdog circuit. The input of the drive circuit 12 of electromagnetism locking bolt 9 links to each other with single-chip microcomputer, its output and electromagnetism locking bolt 9 Be connected. What be connected with single-chip microcomputer 10 goes back position sensor 13, is used for to single-chip microcomputer 10 pass box The open and close signal of door, its best position is to be fixed in the lockhole of shell 1, works as like this case After door 2 was closed, dead bolt puts in lockhole, it can provide accurately spring lock case signal. With the single-chip microcomputer phase The double-colored status indicator lamp 14 of LED and the improper unpacking warning that are used in addition display working condition that connect Circuit 15 and power circuit 16.

The key of control chamber door 2 open and close is duties of electromagnetism locking bolt 9, when electromagnetism locking bolt 9 leads to During the electricity adhesive, turning handle 3 removable dead bolts 5, this moment, chamber door 2 can open or close, and worked as electromagnetism Locking bolt 9 outages discharge, and dead bolt 5 is stuck, and can't move, and chamber door 2 also just can't be opened or be shut.

Below in conjunction with the operating procedure of embodiment, its operating principle is described.One, closes case.

IC-card is inserted in the deck 4 the additional constant open contact closure in the deck 4, single-chip microcomputer 10 quilts

Begin executive control program after resetting, at first detect chamber door 2 and open or close by position sensor 13,

When definite chamber door 2 is when being in door opening state, single-chip microcomputer 10 makes 9 adhesives of electromagnetism locking bolt, red status

Indicator lamp 14 is lighted, and rotatable handles 3, mobile dead bolt 5 are shut chamber door 2 at this moment.Work as the position

Sensor 13 is after single-chip microcomputer 10 provides the signal that chamber door 2 locked, and single-chip microcomputer 10 makes electromagnetism locking bolt 9

Outage discharges, and dead bolt 5 is stuck.Single-chip microcomputer 10 calls the random coded program then, with 12 bytes

Random code write IC-card and memory 11 respectively, though the user can't know the random code that writes as

What, but the random code of the random code that program guarantees to write IC-card and write memory 11 is identical.

When autocoding was achieved in that the single-chip microcomputer electrification reset at random, the content in RAM district was not in the machine

The random number of determining, when button resetted, the content of some register also was a random number in the machine, with these

Random number is taken out, and for safe and secret, writes IC-card and memory through after certain mathematical operation again

In 11.Present embodiment is selected the random code of 12 bytes for use, and the close amount of releasing is 256 12 powers, the password position

The number up to 29, this is much higher than the pertinent regulations of the minimum close amount of releasing in the national standard, this also be by

Key formula cipher safe institute is inaccessible.After above-mentioned work was finished, status indicator lamp 14 was green by red stain,

Can take out IC-card this moment.

Two, unpack.

IC-card is inserted in the deck 4, and single-chip microcomputer 10 is started working from reset mode, when single-chip microcomputer 10 logical

When crossing position sensor 13 and detecting chamber door 2 and be in closed condition, single-chip microcomputer 10 is at first read on the IC-card

Password, and compare, if two place's passwords equate single-chip microcomputer 10 instructions with the password on the memory 11

9 adhesives of electromagnetism locking bolt, can open chamber door 2 this moment.When position sensor 13 provides to single-chip microcomputer 10

Behind the opened signal of chamber door 2, single-chip microcomputer 10 makes 9 outages of electromagnetism locking bolt discharge, red status refers to

Show that lamp 14 lights, enter next working cycles.If password on the IC-card and the password on the memory 11

Unequal, single-chip microcomputer 10 will enter dormant state from duty, wait for plug-in card again.

In the present embodiment, adopt manual mode to come mobile dead bolt, also can adopt electronic mode to replace

Manual mode.When adopting electronic mode, control moving of electronic dead bolt according to duty by single-chip microcomputer

Moving.In addition, in the present embodiment, the deck of IC-card is mounted on the chamber door, and it also can be installed

On other position of being convenient to operate of casing.

Claims

1, a kind of electronic cipher intelligent coffer, it comprises that the casing be made up of shell and chamber door, chamber door retaining mechanism and one are the control core circuit with the one-chip computer, it is characterized in that: it also has an IC-card deck that is installed on the casing, is used for reading and writing IC card.