CN102787750A

CN102787750A - Electronic coded key

Info

Publication number: CN102787750A
Application number: CN2012103252429A
Authority: CN
Inventors: 高扬
Original assignee: Jiangsu IoT Research and Development Center
Current assignee: Jiangsu Dahai Intelligent System Co., Ltd.
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2012-11-21
Anticipated expiration: 2032-09-05
Also published as: CN102787750B

Abstract

The invention provides an electronic coded key comprising a wireless power receiving module, a control unit, a memory unit and a wireless communication module, wherein the output end of the wireless power supply receiving module is connected with the control unit and the wireless communication module; the control unit is connected with the memory unit and the wireless communication module; a code set by a user is written into the memory unit by means of a writing flash; the wireless power receiving module receives the power provided by a wireless power emitting module in an electronic lock and supplies the power to the electronic coded key; and the control unit reads the code memorized in the memory unit and transmits the code to the electronic lock by the wireless communication module. The electronic coded key has the following advantages that the service life problem of a power supply does no need to be considered due to the non-embedded-memory design, and meanwhile, the electronic coded key has an initial password protection function.

Description

A kind of Electronics Cryptographic Keys

Technical field

The present invention relates to a kind of electron key, be specifically related to a kind of electron key that utilizes the radio source power supply and have the password storage function.

Background technology

The all built-in supplying cell of key majority of existing electronic unlock, and the use of battery is relatively stricter to environmental requirement, and low temperature environment can cause the electric weight of battery not enough, influences the effect of unblanking, and the use that therefore has the unlock key of battery has received certain limit value.In addition, for safety, electron key has generally all been fixed code data before dispatching from the factory, and the password in inconvenient later stage is revised, if lose key, also is difficult to crack out password.

Summary of the invention

Technical problem to be solved by this invention be propose a kind ofly to need not the internal battery power supply, can repeatedly revise password, safe and reliable Electronics Cryptographic Keys.

According to technical scheme provided by the invention; Said Electronics Cryptographic Keys comprises: radio source receiver module, control module, memory cell and wireless communication module; The output of said radio source receiver module connects control module and wireless communication module, and said control module connects memory cell and wireless communication module; Said memory cell adopts fever writes to write the password that access customer is set; Said radio source receiver module receives the electric energy that provides from radio source transmitter module in the electronic lock; Supply power to Electronics Cryptographic Keys; Password in the control module reading cells is sent to electronic lock through wireless communication module with password.

Said control module also is connected with the Tip element that is used to point out the Electronics Cryptographic Keys duty, and the signal that wireless communication module reception electronic lock postbacks sends control module to, and control module sends cue to said Tip element.

Said radio source receiver module adopts radio source to receive special chip BQ51013; Said control module adopts single-chip microcomputer C8051T606; The direct current 5V voltage of BQ51013 output arrives ground through the 3rd electric capacity; And the input of connection DC-DC chip TPS79333, TPS79333 output+3.3V voltage arrives ground through the 4th electric capacity, and the VCC pin of connection single-chip microcomputer C8051T606; The P0.2 of single-chip microcomputer C8051T606 and P0.3 pin are set to serial data pin SDA and clock pin SCL respectively, connect memory cell; The P0.4 of single-chip microcomputer C8051T606 and P0.5 pin are set to send pin TX respectively and receive pin RX, connect wireless communication module.

Said wireless communication module adopts wireless communication module JF24D-MCU, the PIN1 pin connection+3.3V power supply of JF24D-MCU, and the PIN2 pin is connected the transmission pin TX of single-chip microcomputer C8051T606 respectively and receives pin RX, PIN4 pin ground connection with the PIN3 pin.

Said memory cell adopts ferroelectric memory FM24C64; The sheet choosing end ground connection of FM24C64; VSS holds ground connection; Power end VDD is connected+the 5V power supply with hardware protection pin WP, and 6 pins of FM24C64 link to each other with the clock pin SCL of single-chip microcomputer C8051T606, and 5 pins link to each other with the serial data pin SDA of single-chip microcomputer C8051T606.

Advantage of the present invention is: Electronics Cryptographic Keys of the present invention adopts no battery design, need not to consider the power source life problem of key, and password need not the artificial memory, has the original password defencive function simultaneously.

Description of drawings

Fig. 1 is a circuit structure block diagram of the present invention.

Fig. 2 is radio source receiver module and a control unit circuit schematic diagram among Fig. 1.

Fig. 3 is a wireless communication module pin connection layout among Fig. 1.

Fig. 4 is a storage unit circuit schematic diagram among Fig. 1.

Fig. 5 is the workflow diagram of unblanking of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

As shown in Figure 1; Said a kind of Electronics Cryptographic Keys comprises radio source receiver module, control module, memory cell and wireless communication module; The output of said radio source receiver module connects control module and wireless communication module, and said control module connects memory cell and wireless communication module.Said control module also is connected with Tip element.

Be illustrated in figure 2 as radio source receiver module and control unit circuit schematic diagram among the present invention.IC1 is the bq51013 of TI company, and bq51013 is that radio source receives special chip, can realize exporting direct current 5V voltage, and peripheral circuit connects simple, is illustrated in figure 2 as main pin and connects, and all the other pins all can connect with reference to the chip operation instruction that TI provides.The direct current 5V voltage of bq51013 output connects the DC-DC chip TPS79333 of capacitor C 3, output voltage 3.3V, TPS79333 output+3.3V connects the VCC pin of capacitor C 4 and single-chip microcomputer C8051T606.Single-chip microcomputer C8051T606 is the little encapsulation single-chip microcomputer of dragon company of Xinhua; Can effectively reduce the volume of Electronics Cryptographic Keys; The P0.1 pin of single-chip microcomputer C8051T606 connects Tip element, and P0.2 and P0.3 are set to SDA (serial data) and SCL (clock) pin respectively, connects memory cell; P0.4 and P0.5 are set to TX (transmission) and RX (reception) pin respectively, connect wireless communication module.

Fig. 3 is a wireless communication module pin connection layout among the present invention; Wireless communication module JF24D-MCU is the small volume communication module of a collection 2.4G wireless receiving and dispatching and control; PIN1 connection+3.3V power supply; PIN2 connects the TX of single-chip microcomputer C8051T606, and PIN3 connects the RX of single-chip microcomputer C8051T606, and PIN4 connects GND.

Fig. 4 is a storage unit circuit schematic diagram among the present invention, and storage chip is selected technical grade ferroelectric memory FM24C64, and reading-writing life-span is 10,000,000,000 times, has the hardware writing protection function.A0, A1, A2 are sheet choosing end, and the present invention only just can meet the demands with a slice memory, so A0, A1, the direct ground connection of A2.VSS is an earth terminal; WP is the hardware protection pin, and when WP connect high level, memory FM24C64 was protected with top 1/4th addresses; The present invention directly links to each other it with+5V power supply; Protected storage FM24C64 1/4th above addresses, this part is the password through cryptographic calculation, uses as subsequent use password.6 pins link to each other with the SCL of single-chip microcomputer C8051T606, and 5 pins link to each other with the SDA of single-chip microcomputer C8051T606.

Said Tip element is conventional sound light alarming circuit, this no longer tired stating.

Be illustrated in figure 5 as the workflow diagram of unblanking of the present invention, concrete performing step is following:

1. with the password of Electronics Cryptographic Keys, store in the memory cell through password fever writes programming user setting.In case adopting the advantage of password external memory is that control module damages, password still can be read by the user.

Under supporting electronic password lock (function of preserving password and radio communication is arranged and have the radio source transmitter module) power-supply system normal condition with Electronics Cryptographic Keys near electronic password lock; (said enough electric energy were to make receiving-end voltage stable when radio source transmitter module from corresponding electronic password lock provided enough electric energy when the radio source receiver module of Electronics Cryptographic Keys receives; And satisfy the voltage of control module operate as normal); The control module of Electronics Cryptographic Keys will send signal to Tip element; Tip element is placed correct through acousto-optic hint user's electronic cipher key position, and operate as normal.If it is undesired that radio source receives, then Electronics Cryptographic Keys does not have any prompting, and the user then needs Electronics Cryptographic Keys is reapposed, on the position that can point out operate as normal.

3. when Electronics Cryptographic Keys gets into normal operating conditions, the password in the control module reading cells, and password sent through wireless communication module.

4. corresponding electronic password lock will carry out the password check and correction after receiving code data, if password is correct, then corresponding electronic password lock is unblanked, if password bad then sends error message, control module drives Tip element and points out the failure of unblanking, and need to get into again to unblank.

Claims

1. Electronics Cryptographic Keys; It is characterized in that: comprise radio source receiver module, control module, memory cell and wireless communication module; The output of said radio source receiver module connects control module and wireless communication module, and said control module connects memory cell and wireless communication module; Said memory cell adopts fever writes to write the password that access customer is set; Said radio source receiver module receives the electric energy that provides from radio source transmitter module in the electronic lock; Supply power to Electronics Cryptographic Keys; Password in the control module reading cells is sent to electronic lock through wireless communication module with password.

2. Electronics Cryptographic Keys as claimed in claim 1; It is characterized in that; Said control module also is connected with the Tip element that is used to point out the Electronics Cryptographic Keys duty; The signal that wireless communication module reception electronic lock postbacks sends control module to, and control module sends cue to said Tip element.

3. Electronics Cryptographic Keys as claimed in claim 1; It is characterized in that said radio source receiver module adopts radio source to receive special chip BQ51013, said control module adopts single-chip microcomputer C8051T606; The direct current 5V voltage of BQ51013 output arrives ground through the 3rd electric capacity (C3); And the input of connection DC-DC chip TPS79333, TPS79333 output+3.3V voltage arrives ground through the 4th electric capacity (C4), and the VCC pin of connection single-chip microcomputer C8051T606; The P0.2 of single-chip microcomputer C8051T606 and P0.3 pin are set to serial data pin SDA and clock pin SCL respectively, connect memory cell; The P0.4 of single-chip microcomputer C8051T606 and P0.5 pin are set to send pin TX respectively and receive pin RX, connect wireless communication module.

4. Electronics Cryptographic Keys as claimed in claim 3; It is characterized in that; Said wireless communication module adopts wireless communication module JF24D-MCU; The PIN1 pin connection+3.3V power supply of JF24D-MCU, the PIN2 pin is connected the transmission pin TX of single-chip microcomputer C8051T606 respectively and receives pin RX, PIN4 pin ground connection with the PIN3 pin.

5. Electronics Cryptographic Keys as claimed in claim 3; It is characterized in that said memory cell adopts ferroelectric memory FM24C64, the sheet choosing end ground connection of FM24C64; VSS holds ground connection; Power end VDD is connected+the 5V power supply with hardware protection pin WP, and 6 pins of FM24C64 link to each other with the clock pin SCL of single-chip microcomputer C8051T606, and 5 pins link to each other with the serial data pin SDA of single-chip microcomputer C8051T606.