Zhi Rui CAN-BUS smart entrance guard management system programme (1)

1 system overview

CAN-BUS smart entrance guard management system is the Shenzhen Zhi Rui technology co., Ltd according to modern requirements of intelligent management and specialized in the development of, the realization of intelligent building, intelligent office buildings, housing districts personnel access control, data collection and statistics and information query process automation portfolio management system.

Provide international standard OPC, RS232, TCP/IP, interface with other systems achieve various linkage control features, such as monitoring system, fire alarm, lighting control, perimeter defense, building automatic control system, improve security, increase energy efficiency, and can be used with the company's development of attendance, consumption, patrol, parking management, system integration, implements a card a library of real card system, card issuing once registration is complete, do not need to repeat the release. Currently on the market provide a cartoon General is independent of the simple combination of the subsystem.

This system of independent development, can provide a variety of data interfaces and the second development support.

Second, the system features

CAN-BUS Zhi Rui entrance guard system works the way for the interrupt processing, occupies a minimum of resources, the bus each Mun credit card and other event information in 0.1 seconds timely initiative to upload to the access control management computer.

Access control system through international standard OPC interface for real time notification, control, monitoring and control systems to achieve real-time interaction, both through the OPC interface, building control system can immediately view the status of the door area and can be remote-controlled door:

1. improve security: when the credit card or illegal events arise, to the output signal of the security monitoring system, monitoring system automatically adds the video to go to the corresponding location, at the same time the scene image to switch to specify the display on the monitor, and video and sound and light alarm automatically.

2. improve energy conservation effect: when someone used my card to enter the room to a building automation system opened the room air conditioning and lighting power of the signal.

When staff leave, to the building automation system a closed device power signal.

3. increase automation program: when someone has to work overtime when access control reader, enter application password and a valid card for automatic brush for open air conditioning and lighting power, access control system will be the event signal to the building control system linkage, and automatic overtime timing.

When the officer left the work completed, enter the application passwords and credit card applications, and automatically stop work timings, and send off the air conditioning and lighting power of the signal.

4. automatically handling of special circumstances: when building a fire, and other special circumstances, the fire service host to a cartoon system emits a signal, at which point the fire linkage region goalkeeper automatically opens and sound and light alarm.

Third, the system features

CAN bus early BOSCH company brought by Germany, mainly used for automotive internal measurement and control of the data communication between the centers.

Because of its good performance in the world is widely used in other areas including: industrial automation and automotive electronics building, lift, Internet, electricity distribution and security fire and many other fields, and gradually become the main means of communication, fieldbus CAN-BUS characteristics:

1. the international standard industrial field bus, transport, reliable, real-time high

2. the transport distance (farthest 10KM), fast transfer rates (up to 1Mbps); single bus maximum 110 nodes (440), and can easily expand the number of nodes

3. all nodes on the bus of equal status, regardless of master-slave, unexpected data can be transmitted in real time

4. non-destructive bus technology, promoting the Conference many nodes in parallel to the bus data bus utilization high

5. the error of the CAN nodes automatically closes off the bus, without affecting the bus communication

6. message for short frame structure and a hardware CRC, interference data probability is small, extremely low error rate

7. not successfully sent messages are automatically sent, hardware features, transmission reliability is very high

8. has the hardware address of the filtering features that simplify software agreement preparation

9. communication media available ordinary twisted-pair cable, coaxial cable or optical fiber, etc.

10.CAN-BUS bus system structure is simple, the cost performance is extremely high

CAN-BUS and RS485 bus comparative table:

The ordinal property RS485CAN-BUS

1 cost slightly higher

2 bus utilization low high

3 network characteristics of single primary network multi-homed network

4 data rate low high

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