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A FPGA-based dual-compound control method for high-speed air valves

A double compound, air valve technology, applied in the direction of program control, computer control, general control system, etc., can solve the problems of speed and upper limit of accuracy, and achieve the effect of improving sorting efficiency and sorting accuracy

Active Publication Date: 2019-05-14
HANGZHOU DIANZI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the method of controlling the air valve for the sorting operation in the industrial grain sorting machine is usually based on a single-chip microcomputer or ARM as the core, and is realized by a software algorithm. Due to the limitation of the working mode and speed of the controller , so there is a certain upper limit on speed and accuracy

Method used

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  • A FPGA-based dual-compound control method for high-speed air valves
  • A FPGA-based dual-compound control method for high-speed air valves

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Embodiment Construction

[0019] Such as figure 1 As shown, there are two independent serial port receiving modules: serial port receiving module 1 and serial port receiving module 2, which receive two RS485 air valve control frame signals respectively; The information and the duration information of the first channel low voltage 12v signal are transmitted to the first channel low voltage 12v signal to generate the combined logic to generate the first channel low voltage 12v signal; the first channel low voltage 12v signal is generated by the combined logic to generate the first channel low voltage 12v signal The low-voltage 12v signal of one channel is transmitted to the dual-channel low-voltage 12v signal compound module, and the 64-way air valve switch information of the first channel is sent to the 64-way air valve signal selector; similarly, after the serial port receiving module 2 is received, it will receive The 64-way air valve switch information and the duration information of the second chann...

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Abstract

The invention discloses an FPGA-based double compound control method for high-speed air valves. The method generates 64 air valve control high-pressure and low-pressure signals by receiving two-way RS485 signals and compounding them. Use independent combinational logic and state machine to receive dual-channel RS485 valve control signals, so that the dual-channel RS485 signals are independent of each other and do not affect each other. And the independent two-way RS485 valve control signal is synthesized in real time to form the final 64-way valve control signal. Based on FPGA-based high-speed air valve double compound control method, the system frequency can reach 100m, the air valve injection time accuracy can reach 1ms, and 64 high-speed air valves can be precisely controlled at the same time, which greatly improves the sorting efficiency and classification of the grain sorting machine. Choose precision.

Description

technical field [0001] The invention relates to the field of industrial grain sorting machines, in particular to a dual compound control method for high-speed air valves in grain sorting machines. Specifically, it is a FPGA-based method for dual compound control of high-speed gas valves. Background technique [0002] In the field of industrial grain sorting machines, there are usually two ways to perform sorting actions during sorting operations. One is to perform the sorting action through a mechanical structure, and the other is to use a high-pressure air valve to perform the sorting action. Among them, the high-pressure gas valve is widely used in practical applications due to its simple structure, low cost and easy control. In practical applications, the control of the high-pressure air valve directly affects the speed and accuracy of the grain sorting system for grain sorting. In the existing technology, the method of controlling the air valve for the sorting operati...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042F16K31/02
CPCF16K31/02G05B19/0423G05B2219/25257
Inventor 黄继业陈派宁高明煜陈德平李芸
Owner HANGZHOU DIANZI UNIV