CN201679288U - A centralized key management system based on pressure sensitive fingerprint identification - Google Patents

Abstract

The utility model relates to a key centralized management system based on pressure-sensitive fingerprint identification, the purpose of which is to identify the authenticity of the key and ensure that each returned key is returned to the original place; it includes a cabinet, a fingerprint access control lock, a key insert, The main control system and the network approval system, the fingerprint access control lock is installed on the cabinet door, the key insert plate is installed in the cabinet, the key insert plate includes the lock cylinder, and there is a trigger switch behind the lock cylinder, and the key corresponds to the lock cylinder one by one; The main control system is electrically connected with the key plate and the fingerprint access control lock. It can automatically identify the status of each key, automatically identify the authenticity of each key, and can conduct real-time approval of key use rights in different places through the network.

Description

A centralized key management system based on pressure sensitive fingerprint identification

technical field

The utility model relates to the field of electrical equipment and management systems, more specifically, the utility model relates to a key centralized management system based on pressure-sensitive fingerprint identification.

Background technique

The key centralized management system is designed for some important departments and places where a large number of keys need to be managed centrally. It combines new management concepts and computer technology to carry out scientific and intelligent centralized management of keys. Features such as safety, convenience, and strong management functions. It can strictly manage the authorized keys, record the situation of key users in detail, and solve various problems and events caused by improper key management as much as possible. Widely used in government departments, military institutions, warehouses, prisons, financial banks, museums, apartments, office buildings and other places.

The key cabinets produced by domestic electronics companies have been controlled by cabinet door locks in the early days when the keys were placed on the hooks in the cabinet. The lock on the key cabinet door can be controlled by the electrical signal in the cabinet, and then the key cabinet door is used. Card-reading, radio-frequency and fingerprint access control systems; inside the cabinet, from loose keys, small doors, to small doors with locks; key placement from ordinary hooks, to making keyholes, and then matching keys with locks; keys are in place From position switches, photoelectric switches, electromagnetic switches to electronic locks, the development of all of these depends on the combination of users and producers. Although the key centralized management system has been put into use at present, there are still problems, mainly including the difficulty of guaranteeing the one-to-one correspondence of key identification, the localized operation of the approval process, and the post-inspection of fingerprint identification that cannot be avoided in advance, etc., but these Vulnerabilities are another big problem that cannot be ignored in centralized key management.

The Chinese Patent Office announced a CN2756765Y document on February 8, 2006, which is called an intelligent key management device. The fingerprint collector is connected with the central computer, the central computer is connected with the single-chip microcomputer in the single-chip microcomputer control circuit through the communication interface, the key state sampling circuit is connected with the single-chip microcomputer control circuit, and the output terminal of the single-chip microcomputer control circuit is connected with the input terminal of the drive and execution circuit. The key management is safer and more scientific, and the management efficiency is improved, and it has more functions. Its shortcoming is that it only pays attention to the identification of the operator, but cannot identify each key, especially when returning the key, it cannot identify the authenticity of the key, nor can it guarantee whether the key is indeed returned to the original place; The approval of key access rights is not convenient enough. It can only be set locally and in advance which keys can be accessed by which personnel, and cannot be approved in real time in different places.

Contents of the invention

The utility model solves the problems existing in the prior art that it is impossible to identify the authenticity of the key and cannot guarantee that each key can be returned to its original place, and provides a centralized key management system based on pressure-sensitive fingerprint identification, which can identify the identity of the key. Authenticity, guarantee that every returned key is returned to its original place.

The technical scheme adopted by the utility model to solve its technical problems is: the utility model includes a cabinet body, a fingerprint access control lock, a key board, a main control system and a network approval system, the fingerprint access control lock is installed on the cabinet door, and the key board Installed in the cabinet, the key insert plate includes the lock cylinder, and there is a trigger switch behind the lock cylinder, and the key corresponds to the lock cylinder one by one; the main control system is electrically connected with the key insert plate and the fingerprint access control lock; the main control system includes the main control chip And the key control circuit connected with the main control chip to identify the in-position state of the key and control the lock and release state of the key, the fingerprint control circuit to control the fingerprint collection and the opening of the fingerprint access control lock, and the communication interface unit for communicating with the network; the main control chip passes the key The control circuit is connected to the key board, the main control chip is connected to the fingerprint access control lock through the fingerprint control circuit, and the main control chip is connected to the network through the communication interface unit; the network approval system is a network approval control system with an approval process set on the network server , and communicate with the main control system through the network, transfer information, and operate the key plate and fingerprint access control lock through the main control system; the network approval system includes:

Fingerprint management system: used to set basic user information and permissions, and establish fingerprint information corresponding to part of the user's fingers;

Bottom control system: used to realize bottom control and identification of key status;

Communication control system: used to realize the exchange of data information and control information between the network server and the main control system;

Network server database: including the storage database of fingerprint collection information, the customization of the approval process and the real-time operation database. Each key operator is authorized to manage one or more keys; by inputting fingerprints and verifying the fingerprints, the fingerprint access control lock on the cabinet door will be automatically opened, and the corresponding key managed by the operator will be released, the indicator light will be on, and the operation will be completed. The operator takes the key and closes the cabinet door. The main control system automatically records this process (an operator took a certain key at a certain day and time); when returning the key, the fingerprint is also verified first. After the verification is passed, the fingerprint access control lock Open it, insert the key into the corresponding key lock cylinder, close the cabinet door, and the main control system will automatically record this process (an operator returns a certain key on a certain day and at a certain time); There is a trigger switch on the back; the key corresponds to the lock cylinder one by one. When the key is inserted into the corresponding lock cylinder, the trigger switch cannot be touched. Only after the one-to-one corresponding key is inserted into the lock cylinder and rotated to the end can the trigger switch of the corresponding lock cylinder be triggered. , so as to prevent the use of tools such as iron sheets to cheat the system, and ensure that the key must be returned to the original place. The key is turned to the bottom to trigger the switch to send out an electric signal, and it cannot be manually reversed, unplugged, and only the electric signal is used to control the lock cylinder to be released. The main control system is electrically connected with the key plate and the fingerprint access control lock. The main control system is used to transmit the approval signal of the network server to the key cabinet through the network communication interface, and identify the corresponding key lock of the approval signal. The state of the core, and finally exchange data information and control information with the outside world through the network; the key control circuit of the main control system is responsible for identifying the state of the key and controlling the release of the lock cylinder, the fingerprint control circuit is responsible for fingerprint collection and fingerprint access control lock opening, communication interface The unit is responsible for the communication with the network communication. The network approval system is a network approval control system with an approval process set on the network server, and communicates with the main control system through the network, transmits information, and operates the key board and fingerprint access control through the main control system. lock; the fingerprint management system of the network approval system is responsible for setting the user's basic information and permissions, and establishing the fingerprint information corresponding to the user's part of the finger; the underlying control system of the network approval system is responsible for the underlying control and identification of the key status; The network server and the main control system exchange data information and control information; the network server database of the network approval system is responsible for the storage of fingerprint collection information, the approval process and the storage of real-time running data.

Preferably, the fingerprint access control lock includes a fingerprint collector and an electric control lock, the fingerprint collector and the electric control lock are connected to the main control system, and are connected to the network approval system through the communication interface unit of the main control system, and the electric control lock is connected to the cabinet door . The fingerprint collection signal is transmitted to the network server through the communication interface unit of the main control system. The fingerprint storage and fingerprint identification are realized by the network approval system through the network. The successful fingerprint identification will be transmitted to the main control system through the network, and the main control system will issue a fingerprint to open the access control lock. Signal.

As preferably, the lock cylinder is a general not dismounting type lock cylinder. The so-called general lock cylinder means that after the key is rotated to the end, it can no longer be turned back or pulled out at will; when the operator returns the key, insert the lock cylinder and rotate it, then the lock cylinder automatically locks the key, and the operator Can no longer be unscrewed or pulled out.

As preferably, several small doors are also arranged in the cabinet, the key plate is placed in the small door, the small door is provided with a small door lock for controlling the switch of the small door, and the network approval system is connected with the small door lock through the main control system.

The management can be further refined by setting a small door in the cabinet.

A key centralized management system based on pressure-sensitive fingerprint identification of the utility model includes a key operation method, a system management method, and an alarm processing method.

The workflow of the network approval system is: before using the key, the operator must first apply on the network where the network approval system exists; the application content should include the key number to be used, the date + time of picking up the key, and the date + time of returning the key. Time, etc.; after approval, the application is approved;

The process for the operator to pick up the key is: when the operator picks up the key according to the application time, the fingerprint verification is first performed on the fingerprint access control lock. After the fingerprint identification is passed, the main control system sends the operator's information to the network approval system;

According to the application approval information returned by the network approval system, the main control system will automatically open the door of the cabinet and open the corresponding small door; the operator turns the key switch to take away the corresponding key; the operator is taking the corresponding key Finally, all small doors must be closed first, and then close the cabinet door; the main control system will record every operation action of the operator, and save it as an operation log in the network approval system, and when the cabinet door is closed, it will All logs of the cabinet are transmitted to the network approval system for preservation;

The process for the operator to return the key is: when the key is returned after use, the operator first performs fingerprint verification on the fingerprint access control lock. After the fingerprint identification is passed, the main control system automatically opens the cabinet according to the application approval information obtained when picking up the key. Body door and corresponding small door; the operator inserts the key and turns the key switch, and returns the corresponding key; after returning the corresponding key, the operator must first close all the small doors, and then close the cabinet door; the main control system will automatically Record every operation action of the operator and save it as an operation log in the network approval system; and when the door of the key cabinet is closed, all operation logs of the opening of the cabinet are transmitted to the network approval system for storage.

Preferably, the key operation method includes:

A. Before using the key, the operator first applies on the network where the network approval system exists. The application content includes the key number to be used, the date + time of picking up the key, and the date + time of returning the key. After approval, the application is obtained pass;

B. The operator presses the fingerprint to apply for login, and the fingerprint access control lock collects fingerprints until the fingerprint collection is successful;

C. Perform fingerprint comparison, convert the fingerprint signal into the corresponding fingerprint number, if it fails, it will be judged as an invalid fingerprint, display "fingerprint is invalid", return to step B;

D. Use the fingerprint number to find the personnel number to which the fingerprint belongs;

E. Use the personnel number to obtain the operator's key operation authority, save the authority to the current operation authority record file, drive the cabinet door and small door, and display the operator's information: operation authority, key retrieval record;

F. The operator turns the key to take away the corresponding key; or the operator inserts the key and turns the key to return the corresponding key; the main control system detects the status of each lock cylinder and judges the operator's operation. If the operation is wrong, it will alarm and display Alarm information, stop operation; update the real-time status record file of the operation, record the status of the key cabinet and fingerprint authentication; generate an operation log according to the operation status, and store it in the server database;

G. If it is detected that the cabinet door is closed, update the key storage record file, save the information of the taken key, and return to step A.

Preferably, the system management method includes: a system timing method and a system recording error operation method, and the system timing method includes:

J. Detect the state of the cabinet door, and start timing if the cabinet door is opened;

K. Judging that if the timing is up, the alarm will be driven to send an alarm signal;

L. Detect the state of the cabinet door, if the cabinet door is closed, the timing ends, otherwise return to step J;

System log error operation methods include:

M. Query the online approval results and get the key permission;

N. Take out the current operator's taken key record from the key storage record table, and get the key return authority;

O. Detect the state of the cabinet door and small door, and the state of each lock cylinder, obtain the operator's operation behavior, and judge whether the operation is within the scope of its authority or whether the operation sequence is legal;

P. If there is an operation error, write the error into the network server database, send an alarm signal, display the error message, and stop other operations.

Preferably, the alarm processing method includes:

Q. The time record of the key being taken away is recorded when the key is operated;

R. Query the operator ID from the server-side database to obtain the latest key return time;

S. If the current system time - the latest key return time > 10 minutes, an alarm will be issued, and the overdue key number and personnel number will be displayed.

The beneficial effect of the utility model is that it can automatically identify the state of each key, including the user, receiving time, and returning time, automatically identify the authenticity of each key, and can conduct real-time approval of the key usage authority through the network in different places. Automatic alarm in case of abnormal situation.

Description of drawings

Fig. 1 is a kind of system block diagram of the key centralized management system based on pressure-sensitive fingerprint identification of the utility model;

FIG. 2 is a block diagram of the circuit in FIG. 1 .

In the figure: 1. Main control chip, 2. Communication interface unit, 3. Network, 4. Network approval system, 5. Fingerprint control circuit, 6. Fingerprint access control lock, 7. Key control circuit, 8. Key insert board, 9 .Master control system.

Detailed ways

The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings.

Example:

A centralized key management system based on pressure-sensitive fingerprint identification in this embodiment, see Figure 1, includes a cabinet, a fingerprint access control lock 6 installed on the cabinet door, a key insert 8 installed in the cabinet, and a main control system 9. There are 4 small doors in the cabinet, and a key plate 8 is installed in each small door. Each key plate 8 has 5 general lock cylinders, and a trigger is set behind each lock cylinder. Switch, each lock cylinder corresponds to the key that needs to be kept centrally. Each key can only rotate one lock cylinder. When the key is inserted into the lock cylinder and rotated to the end, it can touch the trigger switch.

The main control system 9 includes a main control chip 1 and a communication interface unit 2 connected to the main control chip 1, a fingerprint control circuit 5, and a key control circuit 7. The main control chip 1 is connected to the network 3 through the communication interface unit 2, and the network 3 is connected to the installation The network server with the network approval system is connected; the main control chip 1 is connected with the fingerprint access control lock 6 through the fingerprint control circuit 5; the main control chip 1 is connected with the key insert plate 8 through the key control circuit 7; the fingerprint control circuit 5 controls the cabinet door and For the locking and opening of the inner wicket, the key control circuit 7 is responsible for detecting the state of each lock core and controlling the locking and opening of each lock core.

The network approval system 4 includes a fingerprint management system, a bottom-level control system, a communication control system, and a network server database. The fingerprint management system is used to set user basic information and permissions, and establishes fingerprint information corresponding to some fingers of the user; the bottom-level control system is used to realize bottom-level control. and key status identification; the communication control system is used to realize the exchange of data information and control information between the network server and the main control system; the network server database includes the storage database of fingerprint collection information, the customization of the approval process and the real-time operation database.

Referring to accompanying drawing 2, micro-controller 1 adopts S3C2410X chip, and the key cabinet door state signal in fingerprint access control lock 6, the small door state signal, the key pop-up state signal in key plate 8, the key in-position state signal are input through SPI interface To the digital input port of the microcontroller, the fingerprint sensor in the fingerprint access control lock 6 adopts the BLP100 chip, the fingerprint controller adopts the BCT100 chip, and the fingerprint sensor is connected with the USB interface of the microcontroller 1 through the fingerprint controller; The network interface of controller 1 is connected; the audio interface of microcontroller 1 is connected to the sound alarm, the UART interface of microcontroller 1 is connected to the display screen, the LCD interface of microcontroller 1 is connected to the LCD display, and the I2C interface of microcontroller 1 is connected to the keyboard ; The digital output port of the microcontroller 1 is connected with the door electric control lock control, the key pop-up control, the small door electric control lock control, and the status indicator light in the key control circuit 7 through the SPI interface. The network approval system 4 is installed in the network server.

A method for using a centralized key management system based on pressure-sensitive fingerprint identification in this embodiment includes a key operation method, a system management method, and an alarm processing method;

The key operation method includes the following steps:

A. Before using the key, the operator first applies on the network where the network approval system exists. The application content includes the key number to be used, the date + time of picking up the key, and the date + time of returning the key. After being approved by the leader, the application passed;

B. The operator presses the fingerprint to apply for login, and controls the fingerprint access control lock to collect fingerprints until the fingerprint collection is successful;

C. Perform fingerprint comparison, convert the fingerprint signal into the corresponding fingerprint number, if it fails, it will be judged as an invalid fingerprint, display "fingerprint is invalid", return to step B;

D. Use the fingerprint number to find the personnel number to which the fingerprint belongs;

E. Use the personnel number to obtain the operator's key operation authority, save the authority to the current operation authority record file, drive the cabinet door and small door, and display the operator's information: operation authority, key retrieval record;

F. The operator turns the key switch to take away the corresponding key; or the operator inserts the key and turns the key to return the corresponding key; the system detects the status of each lock cylinder and judges the operator's operation. If the operation is wrong, it will alarm and display the alarm information, stop running; update the real-time status record file of the operation, record the status of the key cabinet and fingerprint authentication; generate an operation log according to the operation status, and store it in the server database;

G. If it is detected that the cabinet door is closed, update the key storage record file, save the information of the taken key, and return to step A.

System management methods include system timing methods and system recording error operation methods,

The system timing method includes the following steps:

J. Detect the state of the cabinet door, and start timing if the cabinet door is opened;

K. Judging that if the timing is up, the alarm will be driven to send an alarm signal;

L. Detect the state of the cabinet door, if the cabinet door is closed, the timing ends, otherwise return to step J;

The system logging error operation method includes the following steps:

M. Query the online approval results and get the key permission;

N. Take out the current operator's taken key record from the key storage record table, and get the key return authority;

O. Detect the state of the key cabinet to obtain the operator's operation behavior, and judge whether the operation is within the scope of its authority or whether the operation sequence is legal;

P. If there is an operation error, write the error into the network server database, send an alarm signal, display the error message, and stop other operations.

The alarm processing method includes the following steps:

Q. The time record of the key being taken away is recorded when the key is operated;

R. Query the operator ID from the server-side database to obtain the latest key return time;

S. If the current system time - the latest key return time > 10 minutes, an alarm will be issued, and the overdue key number and personnel number will be displayed.

The above embodiment is only one of the best solutions of the utility model, and does not limit the utility model in any form, and there are other variations and modifications under the premise of not exceeding the technical solution described in the claims.

Claims (4)

1. A key centralized management system based on pressure-sensitive fingerprint identification, comprising a cabinet, a fingerprint access control lock, a key insert, a main control system and a network approval system, the fingerprint access control lock is installed on the cabinet door, and the key The plugboard is installed in the cabinet, and it is characterized in that: the key plugboard includes a lock cylinder, and a trigger switch is arranged behind the lock cylinder, and the key corresponds to the lock cylinder one by one; the main control system is connected with the key plugboard and the fingerprint access control lock Electrically connected; the main control system includes a main control chip and a key control circuit for identifying the in-position state of the key connected to the main control chip and controlling the key lock and release state, a fingerprint control circuit for controlling fingerprint collection and unlocking of the fingerprint access control lock, and A communication interface unit for network communication; the main control chip is connected to the key insert board through the key control circuit, the main control chip is connected to the fingerprint access control lock through the fingerprint control circuit, and the main control chip is connected to the network through the communication interface unit; the network approval The system is a network approval control system with an approval process set on a network server, and communicates with the main control system through the network, transmits information, and operates the key insert and fingerprint access control lock through the main control system; the network approval system includes :    Fingerprint management system: used to set basic user information and permissions, and establish fingerprint information corresponding to part of the user's fingers; Bottom control system: used to realize bottom control and identification of key status; Communication control system: used to realize the exchange of data information and control information between the network server and the main control system; Network server database: including the storage database of fingerprint collection information, the customization of the approval process and the real-time operation database. 2. A centralized key management system based on pressure-sensitive fingerprint identification according to claim 1, characterized in that: the fingerprint access control lock includes a fingerprint collector and an electronically controlled lock, and the fingerprint collector, the electronically controlled lock and the main The control system is connected, and is connected with the network approval system through the communication interface unit of the main control system, and the electric control lock is connected with the cabinet door. 3. A centralized key management system based on pressure-sensitive fingerprint identification according to claim 1 or 2, characterized in that: the lock cylinder is a general-not-dismount-type lock cylinder. 4. A key centralized management system based on pressure sensitive fingerprint identification according to claim 1 or 2, characterized in that: several small doors are arranged in the cabinet, and the key insert board is placed on the Inside the small door, a small door lock for controlling the switch of the small door is arranged in the small door, and the network approval system is connected with the small door lock through the main control system.

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