RU8820U1 - ROOM ACCESS CONTROL DEVICE - Google Patents

Description

The utility model relates to high-tech equipment and is an integral part of an integrated automated access control system for buildings and premises of protected objects. The device is a system of protection, storage and authorized delivery of keys or code cards with the implementation of the procedure for admission to specially designated premises. The device must function in conjunction with a PC / AT type PC.

The closest in technical essence to the described model is the device “PENAL, developed at VNIIEF and published in the advertising brochure of VNIIEF“ Automated system for accounting and control of fissile materials, 19941995gg. This indoor access control device consists of a control and power unit, to the first information panel of which an identification unit and a key storage unit are connected, including a control unit for key fobs and containers, and state control units are connected to the second information bus.

The disadvantage of the prototype is that

all state control units are sub: pushed into a sequential chain, which leads to the failure of the entire device when one of the state control units fails,

the applied non-standard interface of the second information bus increases the cost of the device and limits the number of controlled rooms,

low processor performance of the control unit and power supply limits the functionality of the device and the number of controlled rooms,

the identification unit uses the only method of user identification - by code, which reduces the likelihood of correct identification,

the sensor controller of the state control units and the key storage unit is a hardware-implemented circuit, which reduces the flexibility of the device when configured for a specific application

The technical task to be solved is to increase the reliability of the device, expand its functionality, increase the number of controlled rooms, increase the flexibility of the device when setting up for a specific application, and increase the reliability of user identification.

The problem is solved as follows. In the device for access control to the premises, containing a control unit and a power supply with a central processor, to the first information bus of which an identification unit and a key storage unit are connected, including a control unit for key fobs, and state control units including sensor controllers are connected to the second information bus, new is that as a second information bus a multipoint serial interface of the RS485 type is used, and in the control and power unit as a central process Sora used a 1386EX microprocessor, a human hand biometric identification unit was used as an identification unit, a programmable microcontroller was additionally introduced into the key storage unit, one information bus of which is connected to the information bus of the key storage unit and the other information bus is connected to the control unit of the key fob containers, State control units use a programmable microcontroller as a sensor controller.

The use of a multipoint serial interface RS-485 in a room access control device increases the reliability of the device, since a failure of one of the state control units does not cause a failure of the whole device. The use of the microprocessor 1386EX with a higher performance compared to the prototype in the control and power unit expands the functionality of the device and increases the number of protected premises. The use of a human hand’s biometric identification block as an identification block increases the likelihood of correct user identification. The introduction of a programmable microcontroller into the key storage unit and the use of a programmable microcontroller as a sensor controller in the state control unit increase the flexibility of the device when configured for a specific application.

The figure shows a structural diagram of a device for access control in the premises.

The access control device for the premises contains a control and power unit (1) with a central processor, an identification unit (3) and a key storage unit (4), including a control unit for key fobs (5), are connected to the first information bus (2), and to the second the information bus (6) is connected to the state monitoring units (7), including sensor controllers. As the second information bus (6), a multipoint serial interface of the RS485 type was used, and the microprocessor 1386EX (8) was used as the central processor in the control and power unit (1). As an identification unit (3), a human hand biometric identification unit is used, a programmable microcontroller (9) is additionally introduced into the key storage unit (4), one information bus of which is connected to the information bus of the key storage unit (4), and the other information bus is connected to the control unit for the keychain containers (5), in the state control units (7), a programmable microcontroller (10) was used as a sensor controller.

The access control device for the premises operates as follows. It operates both as part of an integrated access, registration and accounting system (SU and K), and offline. Automatically provides authorized reception and issuance of key fobs-containers according to the identifier presented by the user (password, etc.). The device provides for personnel access to the premises according to rule N, i.e. only a certain group of people can be allowed into the room at the same time. Information about access to the premises, attempts to unauthorized entry into the premises and attempts to obtain an unauthorized key to the premises is recorded in the system log. During device initialization, configuration information is downloaded to the controllers (control and power units). This information describes the controlled objects (sensors, identification devices, control devices for the issuance of key fobs containers with keys), users allowed to them, user access modes to specific objects. After a successful boot, the controllers start polling the devices connected to them. To gain user access to the object, the administrator must register it in the system. give him an identification number, determine access rights to the required objects.

When using identification devices for hand biometrics, it is necessary to register the user on identification devices serving the required objects. This can be done using an administrative identification device (the user is registered on it, and then data from it is transferred to the working identification device). After registration, the user can access the objects allowed to him. To do this, he must be identified on the appropriate device by indicating the number of the required key (or object number). If the identification was successful and access to the required object is allowed, the system will allow you to remove the keyring with the key from the cell of the key storage and key collection unit by turning on the indication at the required socket with the container and remove this object from control. Information about this event will be transferred to the administrative computer. If access to the object is carried out according to rule N, then access will be allowed only upon receipt of all N keys, or one key will be obtained only after the successful identification of all N users. The user's attempts to gain access to objects inaccessible to him are recorded in the log. To put the object under control, it is necessary to return the keychain container with the key to the cell. To do this, the user must be identified on the appropriate device with the number of the slot for the keychain container with the key. After successful identification of the user and determination that all sensors of the object are in normal condition, the indication will light up at the corresponding socket, after which the keychain container can be put into place. After that, the system will take control of the specified object. If an unauthorized access to an object occurs (a sensor has triggered) or an accident occurs with a sensor, this event is recorded in the log and the system immediately informs the administrator about it.

A sample of a room access control device has been made, having the following technical characteristics:

- The capacity of random access memory (RAM) of the controller is not less than 32 Kbytes;

- the capacity of read-only memory device (ROM) of the controller is not less than 32 Kbytes;

-Standard communication channel with PC type PC / AT RS 485, maximum communication length of at least 1000 m, transmission speed - 250 Kb / s.

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Claims (1)

An access control device for rooms containing a control and power unit with a central processor, to the first information bus of which an identification unit and a key storage unit are connected, including a control unit for key fobs, and state control units including sensor controllers are connected to the second information bus, in that, as the second information bus, a multipoint serial interface of the RS 458 type is used, and in the control and power unit as a central process The microprocessor i 386EX was used, a human hand biometric identification block was used as an identification unit, a programmable microcontroller was additionally introduced into the key storage unit, one information bus of which is connected to the information bus of the key storage unit, and the other information bus is connected to the control unit with key fobs, in state control units, a programmable microcontroller is used as a sensor controller.