Group-control motor-driven electric door system based on CAN bus

Abstract

The invention discloses a group-control motor-driven electric door system based on a CAN bus. The group-control motor-driven electric door system comprises a control circuit, a main circuit, a power supply, an alarm lamp, a motor, the CAN bus, a terminal device and an upper management system. The system improves security and stability of a group-control electric door and system anti-interference and anti-damage capability, and solves the problem of system usage environment limit. Through the CAN bus network design, the system is good in safety and real-time performance, easy to overcome site environment obstacles, high in anti-interference and anti-damage capability and low in network delay, and can mount more network nodes; through a dual-power mode formed by a switching power supply and a storage battery, power-off accidents can be prevented and system operation continuity is ensured; the motor-driven electric door can ensure that a door mechanical structure is driven in place to prevent false locking, and thus safety performance is not affected by power failure; through a motor overcurrent detection and alarm module, motor rotation blockage is prevented and safety of the system is improved; and besides, through the upper management system added by an applicant, operation is allowed to be simple and management is allowed to be easy through an LAN communication human-computer interface.

Description

technical field [0001] The invention designs an electric door, in particular to a group control electric door system. Background technique [0002] Electric door systems are widely used in various fields such as industry and commerce. The existing electric door system is usually divided into three types: electromagnet electric door, 485 bus group control electric door and wireless networking group control electric door. The electromagnet electric door needs continuous power supply. Once the system is powered off and out of control, it is easy to open and the system security is low. In addition, this type of electric door needs to be closed manually, and it is easy to lock falsely. Group control electric doors based on 485 bus, due to the characteristics of 485 bus half-duplex communication, polling communication and the small number of child nodes that can be mounted, the response speed of electric doors is slow, the communication interval is long and multi-layer networkin...

AI Technical Summary

Problems solved by technology

The electromagnet electric door needs continuous power supply. Once the system is powered off and out of control, it is easy to open and the system security is low.

In addition, this type of electric door needs to be closed manually, and it is easy to lock falsely.

Group control electric doors based on 485 bus, due to the characteristics of 485 bus half-duplex communication, polling communication and the small number of child nodes that can be mounted, the response speed of electric doors is slow, the communication interval is long and multi-layer networking is required , causing the system to act slowly and the system structure to be huge

The wireless networking group control electric door is controlled by wireless networking, and its wireless networking security and anti-interference ability are poor, making the system easy to be hacked or causing network paralysis when encountering high-power interference, low security and stability; secondly, wireless The ability to penetrate the wall of the network is weak, and it is difficult for the signal to pass through solid obstacles (such as prison walls, etc.); thirdly, the real-time performance of wireless networking is poor, and there are problems of network congestion and delay; finally, the power consumption of wireless networking hardware is high, and its routing nodes always Power supply is required to maintain routing services. Once the power is cut off, the entire network will be paralyzed and the system stability will be reduced.

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