B/S architecture-based human machine interface system and industrial controller

Abstract

The present invention discloses a B / S architecture-based human machine interface system. The system comprises a local device and an external device interacted with the local device. A controller of the local device comprises a display module, a network port, a communication port, and a WebSserver unit and an embedded browser that are used as service ends. The display module is used for realizing local interface display. The network port uses a standard network interface so as to be connected with a terminal device or a network device. The communication port is used for connecting an industrial device. The WebServer unit is used for receiving, sending, converting and transmitting data. The embedded browser accesses the WebServer unit through a local IP address. The external device is connected with the webserver unit through the network port and performs human machine interface display by using a browser of the external device. The human machine interface system is no longer simply a local device, but a remote access and control system. Further, applications can be developed by using a standard Web development tool, and an industrial controller supports a traditional industrial communication interface and a protocol.

Description

technical field [0001] The invention belongs to a man-machine interface system applied in the field of industrial automation, and in particular relates to a man-machine interface system based on a B / S structure. Background technique [0002] In the field of industrial automation, HMI (human machine interface) is a commonly used device, which is often used in conjunction with industrial controllers PLC, industrial computers and related industrial special equipment, as a means for users to obtain equipment information, parameters, and perform related control operations. interface unit. [0003] Traditional HMI equipment mainly consists of the following parts: 1) display screen, including touch and non-touch; 2) dedicated embedded control board, running dedicated graphical user interface software and related communication protocols on the embedded board ; 3) communication interface. In addition, traditional HMI devices also need to provide secondary development tools for cust...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of traditional HMI equipment mainly include: 1) The communication rate is slow, which is no longer suitable for high-speed industrial production lines; a large number of RS232\485 interfaces are used as communication interfaces, and the communication protocols used are relatively traditional. Although compatibility is guaranteed, it is sacrificed. efficiency

At present, some manufacturers have launched HMIs compatible with industrial Ethernet, but the price is extremely high, and there are few devices that support industrial Ethernet, so there are compatibility problems

2) The dedicated graphical interface on the HMI is developed using a dedicated embedded graphics platform, which only provides limited graphic elements, such as buttons, display boxes, etc., and the degree of customization is low, and the interface is not beautiful; and because of the single function of the HMI device, Due to cost considerations, the performance of the selected control chip is relatively limited, which affects the efficiency of graphics development and further aggravates the fluency of the entire system

3) The HMI system has a secondary development function, which allows users to customize their own interface and functions. However, different manufacturers use different secondary development tools, and the development modes are very different, and the interface elements provided are not the same. , There is a huge programming workload when upgrading

[0005] Due to the particularity of the industrial system, the customer's human-machine interface requirements can only be realized through HMI. In many cases, due to some special needs, they can only purchase an expensive HMI device, which makes the overall cost rise sharply.

Images