System design principles
     

● advance:

Adopt the current advanced and mature technology and equipment

● safety:

It does not affect the operation of the original elevator card swiping system to ensure its safety.

● practical use:

Reasonable configuration and selection of appropriate product models, the whole system is stable, reliable and cost saving.

● convenience:

Perfect management system, clear software operation, management personnel and cardholders can easily use the system.

● scalability:

And the principle of ease of maintenance.

● openness:

In order to ensure the coordinated operation of all suppliers' products and to take the long-term interests of investors into consideration, the system must be an open system and implemented in combination with relevant international standards or industrial standards.

System design basis

● international wiring standard (ISO/IEC11801)

● technical requirements for entrance and exit control system (GA/T 394-2002)

● intelligent building design standard (dbj08-47-95)

● standard for cables in commercial buildings (EIA/ tia-569)

● code for electrical design of civil buildings (JGJ/ t16-92)

● lightning protection design specification for buildings (gb50057-2904)

● code for construction and acceptance of electrical installation engineering (gbj23-90, 92)

● design specification for industrial enterprise communication grounding (gbj79-1985)

● low voltage distribution design specification (gb50054-95)

● safety prevention engineering procedures and requirements (GA/ t75-94)

● public safety industry standard of the People's Republic of China GA/ t70-94

● safety industry standard of the People's Republic of China GA/ t74-94

System design objective

Elevator card swiping system is based on advanced computer technology, communication technology and contactless IC card technology, which brings safe and convenient control for the use of elevator.

The specific objectives are:

● the effective card holder can use the elevator conveniently and safely.

● cardholders can only access authorized floors.

● external staff without card or with invalid card cannot use the elevator.

● does not affect the operation of the original elevator system, to ensure the safety of the whole system.

● the management personnel can conveniently set the access rights of the personnel and check the access records of the personnel.

● economic and reasonable operating costs.

System overview

In modern society, the control of the elevator still stays at the stage of manual control, which wastes human resources and greatly reduces security. Therefore, it is necessary to set up an elevator access control system to control the elevator. This paper designs an elevator control system based on RFID, install it outside the elevator selection and call on the interface of the authorized personnel (people who already hold a valid IC) can use IC card into the elevator, and can be called ladder, choose oneself want to go to the floor, and is not authorized personnel can enter the elevator, more have no right to call ladder, thereby

Play the role of access control.

(1) our elevator card swiping system can realize that all cardholders entering the elevator must first be authorized by the system administrator. When using the elevator, different people have different rights allocation. Everyone who enters the elevator can enter the designated area or floor after authorization, and can carry out authorization management according to different schedules. No unauthorized access to the floor of the management area.

Card reader is installed in two ways, that is, installed in or outside the elevator car.

If it is installed outside the elevator car, the cardholder needs to read the card first through the setting. When the card is valid, the elevator door opens automatically and the cardholder enters the elevator according to the designated area or floor.

There are two types of elevator car (through different Settings)

One is that after entering the elevator, the personnel can read the card. Under the premise that the card is valid, they can enter the area or floor that has been authorized in advance. Other floors cannot be entered.

Another kind of personnel is to enter the elevator, read the card, under the premise that the card is valid, can enter all floors.

According to the current situation and your system requirements, this system adopts the elevator floor control card reader installed in the elevator car.

(2) one RS485 network communication interface can connect 128 elevator controllers, each controller can manage up to 20,000 users. Whether it is offline or online, the controller can record a large amount of transaction data, so that all the records of elevator personnel entering and leaving can be found. It can independently save 4,096 records in non-connected state, and maintain data power failure for more than 90 days. Data is automatically uploaded when the network is reconnected. Multiple system board status monitoring and self-checking (e.g. external power failure, data errors, network anomalies and system reset, etc.)

(3) time period control for important floors. It can program access rights time for 31 time groups. The controller has several engineering modes, such as dormancy, security and password.

The working principle of

Rfid-based elevator control system consists of three parts: electronic tag, card reader and control system.

(1) electronic label (IC card)

Composed of coupling elements and circuits, the tag contains a built-in antenna for communication with the radio frequency antenna of the card reader, and each tag has a unique electronic code, which is attached to the IC card to identify a unique target object.

(2) reader

A device that reads (and writes) label information. The reader includes a card reader and an antenna that transmits rf signals between the tag (rf card) and the card reader through the antenna.

The main process of RFID work is: the card reader sends the radio frequency signal of a certain frequency (13.56mhz) through the antenna. When the electronic tag enters the range of the radio frequency signal, the radio frequency card enters the working area of the transmitting antenna and generates the induced current. The radio frequency card sends its own encoding and other information through its built-in transmitting antenna; The receiving antenna of the system receives the carrier signal sent from the radio frequency card and transmits it to the card reader through the antenna regulator. The card reader demodulates and decodes the received signal and sends it to the background system for related processing.

(3) control system

The control system judges the rights of the cardholder according to logical operation, makes different processing and control according to different rights, and sends command signals to control the actions of the elevator.

The working process

(1) after entering the elevator, the cardholder needs to swipe the card first, and then press the button of the corresponding floor.

For example, a cardholder has access to floor 3, 4 and 5. When he swipes his card, he can press the button of floor 3, 4 or 5. All floor buttons will not work if no card is swiped.

(2) when the cardholder's credit card, the elevator controller corresponding to the output of the 3, 4, 5 layers relay action, three sub output signal respectively to the lift cabinets, elevator cabinet after receives the three sub signal, activate the layer 3, 4, 5 floor buttons (other floor button is in a state of "dormancy"), at this moment, the cardholder to floor button such as 4 layer, the elevator start to 4th floor (elevator cabinets should be set aside terminals, used to receive the elevator controller of dry contact output signal).

(3) a key switch can be set in the elevator car, setting the "automatic" and "card reading" position. When the key switch is in the "automatic" position, you can enter any floor without swiping the card. At this time, the elevator works in the non-security state, which is equivalent to the general elevator; When the key switch is in the "card reading" position, the elevator works in the security state. Only by swiping the card can you press the button to the designated floor.

Jlt-f24 layered series features:

Jlt-f24 elevator floor control system is a special elevator controller for elevator control and system integration in high-rise buildings. By adopting jlt-f24, the property management company or management personnel can conduct more effective and safer management on the entrance and exit of various personnel in the building, and effectively control the entrance of miscellaneous personnel. All card holders using the elevator must first be authorized by the system administrator. When using elevators, different people have different access assignments. Everyone who enters the elevator is authorized to enter the designated area or floor, and can conduct authorization management according to the time authority table and floor authority table. Unauthorized access to the floor of the management area, and can control the time period of important floors. Whether it is offline or online, the controller can record a large amount of transaction data, so that all the records of elevator personnel entering and leaving can be found.

Main functions:

1. Jlt-f24 controller can be authorized to use on each floor of the elevator

2. Through the management software, the management staff can limit the use period of IC CARDS according to the actual situation.

3. Jlt-f24 card reading system can limit the number of times IC CARDS are used, which is convenient for management personnel to charge fees.

4. Cancel the lost card, so as to prevent non-staff from entering the elevator.

5. Strong confidentiality, not universal for each ladder and card.

6. Each card can support the simultaneous use of multiple elevators through authorization

7. Jlt-f24 controller has the function of fault self-diagnosis, helping managers to eliminate elevator faults.

8. Jlt-f24 controller can automatically switch back to the original keyboard operation mode of the elevator after failure, so as to avoid the danger caused by the blind use of the user in case of accident.

9. Jlt-f24 controller can be equipped with a password keyboard to call the elevator, and the management personnel can directly input the password to use the elevator under special circumstances such as inspection.

10. The system is capable of managing 53,880 CARDS and storing 53,880 elevator use records and 1000 blacklists. The storage records are guaranteed not to be lost within 10 years in case of power loss.

11. Users can set the password for IC card to prevent others from embezzling after the loss of IC card.

12. No contact IC card, no wear in reading and writing, more convenient to use.

13. Jlt-f24 controller has complete management software