Method for networking and cascading electronic equipment by using universal serial port technique

Abstract

The invention provides a method for networking and cascading electronic equipment by using a universal serial port technique, which consists of a computer universal serial port, a primary equipment port A, a primary equipment port B, a primary equipment electric level transforming unit, a primary equipment control unit, a slave equipment port A, a slave equipment port B, a slave equipment electric level transforming unit, a slave equipment control unit and a slave equipment optical-coupling unit, wherein the computer serial port is connected with the main equipment port A; the main equipment port B is connected with the slave equipment port A; the slave equipment port B is connected with the next slave equipment port A; a computer sends data to the equipment in manner of broadcasting; the equipment returns the data to the computer in manner of time division multiplexing. The method for networking and cascading electronic equipment by using the universal serial port technique not only realizes data transmission between the computer and the equipment but also is simple, low-cost, not difficult in development and debugging, and easy for maintenance.

Description

technical field [0001] The invention relates to the technical field of networking and cascading of electronic devices, and in particular, to a method for networking and cascading electronic devices by using a common serial port technology. Background technique [0002] At present, the networking and cascading methods of many electronic devices are through Ethernet, USB bus, I2C bus, CAN bus, USB and other methods. Although these methods can realize the cascading of electronic devices, they have the disadvantages of complex technology, high cost, The communication distance is short and the relay equipment is required. When a computer communicates with an electronic device in a network, if it is cascaded through Ethernet, although it is very convenient and not limited by the number of cascaded devices, the device needs to have a network interface, and the device needs to have a network processing capability. The support of CPU and related embedded applications, and the suppor...

AI Technical Summary

Problems solved by technology

However, when I2C bus and CAN bus are used to form a network, the general-purpose computer does not have these two types of interfaces. To adopt these two types of bus networks, it is necessary to add third-party equipment to convert these two types of bus interfaces into computer-ready interfaces. Some interfaces face limitations in the number of devices and communication distance when networking devices

Although the USB bus networking method is also very convenient, it is also subject to higher requirements for the number of cascades, communication distance, and CPU and embedded programming of the device.

When the above methods are used at the same time, it is more difficult to develop and debug application software on the computer side.

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