Induction heating distributed control system

Abstract

The invention belongs to the technical field of electrical automation control, and discloses an induction heating distributed control system. The induction heating distributed control system comprises a local monitoring module, a main control module, communication module and a remote monitoring module, wherein the local monitoring module processes a set value from a PLC, completes the acquisition, processing and calculation of an electric quantity of induction heating equipment, and outputs a control quantity for controlling the induction heating equipment; the main control module utilizes the PLC for acquiring, receiving and transmitting various data, and transmits the acquired data to a digital signal processing unit; the communication module transmits an electric quantity signal to a display operation unit and the main control module by using circuits such as a serial communication circuit; and the remote monitoring module displays and modifies the status of each induction heating power supply. The induction heating distributed control system adopts an object-oriented design idea, and correctly and effectively divides the functional modules of control software according to the operating characteristics, so that the whole system software has a powerful interface function and good real-time performance; and the induction heating distributed control system has high practicability and reliable operation, and is convenient for field operators to use and overhaul.

Description

technical field [0001] The invention belongs to the technical field of electrical automation control, in particular to an induction heating distributed control system. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] From 1950 to 1959, with the emergence of semiconductor silicon thyristors, solid-state semiconductor components became the core of modern power electronics. In the intermediate frequency range, heating devices realized by thyristors gradually replaced traditional methods. However, due to the limitation of parameters such as the characteristics of the thyristor itself, there are disadvantages such as uncontrollable shutdown and narrow operating frequency range, which cannot meet the requirements of most loads. Especially in the high frequency range, because of the limitations of these shortcomings, it has caused great technical difficulties in the development of variable frequency power su...

AI Technical Summary

Problems solved by technology

[0012] (3) The existing control system has a large amount of data collection, long transmission lines, low transmission efficiency, and inaccurate data

Since all nodes share the RS485 bus, the information transmitted on the bus is easy to send conflicts and collisions

Therefore, there must be strict communication timing control, otherwise the 8 DSP slaves will all send data, and the communication will be chaotic

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