CN205068524U - Intelligent gate inhibition system - Google Patents

Abstract

The utility model relates to an intelligent gate inhibition system, including the inside embedded equipment of entrance guard, entrance guard external information collection equipment and customer premises equipment, automatically controlled ware is opened to PKI memory, inputoutput interface, a wireless communicator and lock that the inside embedded equipment of entrance guard includes ARM central processing unit and connects ARM central processing unit respectively, customer premises equipment includes the 2nd wireless communicator and the private key memory of user side treater and difference bond to user end treater, a wireless communicator passes through the 2nd wireless communicator of wireless network connection, entrance guard external information collection equipment connects inputoutput interface. Compared with the prior art, the utility model has the advantages of make things convenient for domestic consumer, feasibility height, equipment structure clarity and security high.

Description

An intelligent access control system

technical field

The utility model relates to an access control device, in particular to an intelligent access control system.

Background technique

The access control system, also known as the access control system (ACCESS CONTROL SYSTEM), is an intelligent management system that manages the access of personnel. At present, common intelligent access control systems include: password access control system, contactless card access control system, fingerprint iris and other biometric access control systems, etc. The intelligent access control system can be divided according to the identification method: ordinary key password type, random keyboard type, card identification type, radio frequency card type and biometric identification type. The biometric type has higher security, but it has disadvantages such as high cost, low recognition rate, and high environmental requirements. With the development of communication technology and computer technology, non-networked access control began to develop in the direction of network access control technology. Network access control technology is bound to be affected by network security. Therefore, it is necessary and possible to develop an intelligent, safe and reliable network access control technology method and device. Asymmetric key technology has been reliably certified and praised in the field of PC and Internet. Public key technology can also be used in ARM embedded systems. OpenSSL network security library can be successfully cross-compiled into ARMLinux operating system. Both symmetric key technology and asymmetric key technology can be supported in the OpenSSL library. Therefore, it can be considered to introduce the RSA algorithm of asymmetric key in the ARM embedded system. The combination of RSA algorithm technology with the button device and sound collection device in the external information collection device will be a good access control security protection technology.

In order to realize the intelligent access control equipment based on asymmetric key technology, the selection of the access control decryption equipment must be solved first. Skilled engineers can use RSA on tablet computers or PCs to decrypt access control passwords, but ordinary users are not familiar with encryption and decryption operations. Therefore, for the convenience of ordinary users, the RSA decryption and access control password can be realized through the corresponding app on the smart phone.

Chinese patent CN203966220U discloses a smart phone-based wireless access control management system, including a smart phone, a management cloud server, and an access control device. The access control device includes an intelligent door machine or an intelligent fence machine, and an electric lock, and is equipped with a power supply ; The smart phone, smart outdoor station or smart fence station includes a mobile application processor and a communication module, and the APP can be used to connect and manage the cloud server through a wireless data network. Users can use their smartphones to log in to the APP through a pre-set account, and then transmit the door opening signal to the management cloud server. When the signal is received, the electric lock is opened. When the patent opens the access control, the smart phone needs to be in an online state, which is not suitable for use in an offline state. The user's use environment is limited, and the management cloud server needs to be in a waiting state in real time. It needs to work every time the access control is opened, which increases management. The processing burden of the cloud server makes the implementation cost too high.

Utility model content

The purpose of this utility model is to provide an intelligent access control system in order to overcome the defects of the above-mentioned prior art, which has the advantages of convenience for ordinary users, high feasibility, clear equipment structure and high security.

The purpose of this utility model can be achieved through the following technical solutions:

An intelligent access control system, including an internal embedded device for access control, an external information collection device for access control, and a user terminal device, wherein the embedded device for access control includes an ARM central processor and a public key memory and an input-output interface connected to the ARM central processor respectively , a first wireless communicator and a door lock opening electric controller, the client device includes a client processor and a second wireless communicator and a private key memory respectively connected to the client processor, the first wireless communicator passes through The wireless network is connected to the second wireless communicator, and the access control external information collection device is connected to the input and output interfaces.

The access control external information collection equipment includes an information collector and an LCD display, and both the information collector and the LCD display are connected to input and output interfaces.

The information collector includes input buttons and a sound collector, both of which are connected to input and output interfaces.

The wireless network includes bluetooth wireless network, wifi wireless network and 3G wireless network.

The client device is a smart phone, a tablet computer or a PC.

The ARM central processing unit is an S3C2440 chip.

Also included is a key management host wirelessly connecting the first wireless communicator and the second wireless communicator.

It also includes an audible and visual alarm connected to the ARM central processing unit.

The public key memory adopts flash memory.

The private key memory adopts flash memory.

Compared with the prior art, the utility model has the following advantages:

1) The ARM central processor encrypts the password required for access control based on the RSA public key. The ARM central processor reads the public key storage and can obtain the RSA public key of the legal access control user. At the same time, multiple legal users can be pre-stored in the public key storage. public key, so that multiple legitimate users can open the access control, cooperate with the corresponding private key storage in the user end device, so that the access control verification can be performed with the user end device in the offline state, which is convenient for ordinary users to use and overcomes the existing The limitations of the environment in which the technology is used by users.

2) It is suitable for the field of intelligent network access control, which belongs to the active security protection system. After the intelligent access control system is successfully tested, it can be installed on the access control system equipment, which overcomes the defects of simple encryption and decryption and insecurity of the traditional access control system, and uses ARM The central processing unit and the public key memory perform RSA encryption, and at the same time, the client device uses the private key memory to perform RSA decryption. A brand-new design scheme and module integration technology for the access control security system are proposed to provide intelligent security protection for the access control system. To a large extent, it strengthens the security of the intelligent access control system and facilitates the majority of ordinary users.

3) The equipment has a clear structure and a modular design, some of which use the original and mature key input technology and/or voice recognition technology to reduce development costs, and combine the access control system with the key management technology to ensure the security of the access control system. reliability.

4) Add a key management host to work when users need to add access control, and do not need to participate in the authentication encryption and decryption in the process of opening the access control. Compared with the existing technology, the cost of the overall solution implementation is reduced, and the division of labor between each component is clear.

5) The information collector is designed with two collection modes at the same time, including the input button and the sound collector. The sound collector is more convenient to use, but when there is a sound collection error, you can use the more reliable input button for re-authentication. Guarantee the normal operation of the access control system, provide system reliability, and add sound and light alarms at the same time, which can give an alarm to the failure to open the access control many times.

6) The production cost is low, the practicability is strong, and the selected technology uses mature ARM central processing unit and flash memory, the hardware cost is low, and it is suitable for popularization and use.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of the workflow of the internal embedded device of access control in the utility model;

FIG. 3 is a schematic diagram of the workflow of the user terminal device in the present invention.

In the figure: 1. Embedded device inside access control, 2. External information collection device for access control, 3. Client device, 4. Key management host, 5. Sound and light alarm, 11. ARM central processing unit, 12. Public key Memory, 13. Input and output interface, 14. First wireless communicator, 15. Door lock opening electric controller, 21. Input button, 22. Sound collector, 23. LCD display screen, 31. Client processor, 32 . A second wireless communicator. 33. A private key storage.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the utility model, and the detailed implementation and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

As shown in Figure 1, an intelligent access control system includes an internal embedded device 1 for access control, an external information collection device 2 for access control, a client device 3, a key management host 4, and an audible and visual alarm 5. The embedded device 1 for access control It includes an ARM central processing unit 11 and a public key memory 12 respectively connected to the ARM central processing unit 11, an input and output interface 13, a first wireless communicator 14 and a door lock opening electric controller 15, and the client device 3 includes a client processor 31 And the second wireless communicator 32 and the private key memory 33 that are respectively connected to the client processor 31, the first wireless communicator 14 is connected to the second wireless communicator 32 through a wireless network, and the access control external information collection device 2 is connected to the input and output interface 13, The key management host 4 is wirelessly connected to the first wireless communicator 14 and the second wireless communicator 32 , and the sound and light alarm 5 is connected to the ARM central processing unit 11 . RSA encryption runs in the embedded device 1 inside the access control, RSA decryption runs in the client device 3 outside the access control, and voice input or key input is configured in the external information collection device 2 of the access control.

Wherein, access control external information collection equipment 2 comprises information collector and LCD display screen 23, and information collector and LCD display screen 23 are all connected to input and output interface 13, and LCD display screen 23 is used for displaying that ARM central processing unit 11 needs to display in the course of processing. access control verification prompt. The information collector is responsible for processing key input and/or voice input, and includes an input key 21 and a sound collector 22 , both of which are connected to the input and output interface 13 .

User terminal device 3 adopts smart phone, tablet computer or PC, wherein, just say from the angle that user is convenient to use, smart phone is the best, simultaneously, wireless network comprises bluetooth wireless network, wifi wireless network and 3G wireless network, and user can according to Use the environment to select a suitable wireless network for network remote/short-range operations.

ARM CPU 11 is S3C2440 chip, a 16/32-bit RISC microprocessor based on ARM920T core and 0.18um COMS technology developed by Samsung, suitable for low-cost, low-power, high-performance handheld devices or other For electronic products, the S3C2440 chip is selected as the ARM central processing unit 11 of the embedded device 1 inside the access control.

The public key storage 12 and the private key storage 33 can be flash memory which is widely used in the market to reduce the production cost.

The utility model organically combines the traditional button input and/or voice recognition method with the RSA asymmetric key technology in network security to realize the encryption and decryption technology of intelligent network access control. First utilize the key management host 4 to generate RSA key pairs, and how many key pairs are generated according to the number of authorized users of the access control. Compared with generating the key pair on the ARM central processing unit 11, this processing method will greatly reduce the generation time of the RSA key pair; secondly, write the public keys of all RSA key pairs into the embedded device 1 inside the access control In the public key memory 12 that ARM central processing unit 11 is connected, the private keys of all RSA key pairs are encrypted and then imported into the client devices 3 of different legitimate users, ARM central processing unit 11 and client processor 31 are The hardware circuit boards that can be purchased on the market for key encryption and decryption are shown in Figure 2 and Figure 3. The working process of opening the access control is as follows:

1) ARM central processing unit 11 at first detects whether there is a wireless request signal from the client device 3, and when receiving the wireless request signal, generates a random number of 6 to 8 bits, adds the existing letter button on the input button 21, Generate the access control opening password, use the public key corresponding to the user in the public key memory 12 to generate the plaintext of the access control opening password as ciphertext, after that, the ARM central processing unit 11 transmits the ciphertext of the access control opening password to the user through a wireless network such as bluetooth terminal device 3, such as a smart phone app.

2) The client device 3 uses the private key of the private key memory 33 to complete the RSA decryption operation on the ciphertext of the access control opening password, and obtains the plaintext of the access control opening password; after the legal access control user obtains the access control opening password, there are two ways to open the access control, voice Read out the unlocking password of the intelligent network access control, after the sound signal is collected by the sound collector 22, it is sent to the ARM central processing unit 11 for identification, if it is successfully recognized by the voice, the access control is opened; as the voice recognition fails, the traditional access control button can be used The input method replaces speech recognition, and after the letter key of input is collected by input key 21, pass to ARM central processing unit 11 and carry out identification, if the letter key of input is correct, then open access control, as someone next to hears this password or sees the password of this password It doesn't matter if the button is input, because it is a dynamic password, and the LCD display screen 23 can be used to display prompt operation information and the like, and the man-machine interface is friendly.

If it is necessary to temporarily increase legal users of the access control, the key management host 4 is used to transmit the corresponding public key and private key to the embedded device 1 and the user end device 3 inside the access control. The key management host 4 completes the generation function of the RSA key pair, the embedded device 1 inside the access control completes the generation function of the access control opening password in the access control part, and finally the user terminal device 3 completes the function of receiving and identifying the access control opening password. Clearly, the workload of the ARM central processing unit 11 is reduced, and its work efficiency is improved. At the same time, the RSA algorithm is a highly secure asymmetric key technology, which belongs to the public key system. In theory, even if the public key is placed on the Internet, as long as the private key is well protected, the security of the access control system is still very high. In actual operation, not only the private key is encrypted and stored in the client device 3, but the RSA public key is not publicly stored in the public key memory 12 of the ARM central processor 11, but is managed and distributed by the key management host 4 in a unified manner. So the whole access control system is very safe. In actual use, the key management host 4 is only a tool for generating a secure RSA key pair. After safely generating several RSA key pairs, the process for the user to unlock the access control can run without the key management host 4 .

Claims (10)

1. an intelligent access control system, comprising an internal embedded device (1), an external information collection device (2) and a client device (3) for access control, characterized in that, the internal embedded device (1) for access control includes an ARM The central processing unit (11) and the public key memory (12), the input and output interface (13), the first wireless communicator (14) and the door lock opening electric controller (15) connected to the ARM central processing unit (11) respectively, The client device (3) includes a client processor (31) and a second wireless communicator (32) and a private key memory (33) respectively connected to the client processor (31), the first wireless communicator (14) Connect the second wireless communicator (32) through a wireless network, and the access control external information collection device (2) is connected to the input and output interface (13). 2. a kind of intelligent access control system according to claim 1, is characterized in that, described access control external information collection equipment (2) comprises information collector and LCD display screen (23), and described information collector and LCD display screen (23) are connected to the input and output interfaces (13). 3. a kind of intelligent access control system according to claim 2, is characterized in that, described information collector comprises input button (21) and sound collector (22), and described input button (21) and sound collector ( 22) are connected to the input and output interfaces (13). 4. The intelligent access control system according to claim 1, wherein the wireless network comprises a bluetooth wireless network, a wifi wireless network and a 3G wireless network. 5. The intelligent access control system according to claim 1, characterized in that, the user terminal device (3) adopts a smart phone, a tablet computer or a PC. 6. A kind of intelligent entrance guard system according to claim 1, is characterized in that, described ARM central processing unit (11) is S3C2440 chip. 7. A kind of intelligent access control system according to claim 1, is characterized in that, also comprises key management host (4), and described key management host (4) wirelessly connects first wireless communicator (14) and the second Two wireless communicators (32). 8. The intelligent access control system according to claim 1, further comprising an audible and visual alarm (5), and the audible and visual alarm (5) is connected to the ARM central processing unit (11). 9. A kind of intelligent entrance guard system according to claim 1, is characterized in that, described public key memory (12) adopts flash memory. 10. A kind of intelligent entrance guard system according to claim 1, is characterized in that, described private key memory (33) adopts flash memory.