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Conveyor belt speed measurement method and device

A conveyor belt and speed measurement technology, applied in the field of control, can solve problems such as large errors and lagging measurement results, and achieve the effects of large errors, good real-time performance, and high measurement accuracy

Active Publication Date: 2016-12-14
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a conveyor belt speed measurement method and device to at least solve the problem in the related art that the method of measuring the speed of the chain conveyor belt based on the frequency of the frequency converter has large errors and the measurement results lag

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  • Conveyor belt speed measurement method and device
  • Conveyor belt speed measurement method and device
  • Conveyor belt speed measurement method and device

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Embodiment 1

[0062] This preferred embodiment provides a speed measurement method for plate chain production that can be applied to a speed detection system for a plate chain production line. The method for measuring the plate chain gap can directly measure the speed, which not only realizes the real-time detection, but also eliminates the unreliability caused by the frequency converter mapping speed detection. In addition, it can also limit the speed of the production line and give an overspeed alarm.

[0063] In this preferred embodiment, a modular fixed bracket is used to fix the sensor. The sensor can be a photoelectric sensor, for example, an Omron photoelectric sensor, and of course other types of sensors can also be used. This design uses a very simple detection circuit, which includes: signal acquisition circuit, signal processing circuit, alarm circuit, communication module. The signal acquisition circuit is to acquire the conduction condition of the sensor. The signal processin...

Embodiment 2

[0069] In this preferred embodiment, since the voltages required by the detection module and the communication module are 12V and 5V respectively, and the voltage of the operating environment is generally 220V, the 220V can be converted into 5V and 12V through a transformer and a voltage conversion circuit. This module adds a fuse between the zero and live wires, which can greatly improve the safety of the system. The input terminal of the transformer can be connected to 220V / 230V 50Hz / 60Hz AC voltage, the output terminal is 12.5V 400mA and 8.5V 100mA AC voltage, and then converted to DC voltage by a rectifier bridge composed of diodes. The DC voltages of 12.5V and 8.5V become the standard voltages of 12V and 5V after being regulated by voltage regulator chips 7812, 7805 and capacitors.

[0070] The sensor is driven by 12V voltage, and there are two output modes. Mode 1: the sensor is not blocked signal is input from the optocoupler input terminal, and 5v voltage is output fro...

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Abstract

The invention discloses a method and device for measuring the speed of a conveyor belt, wherein the method comprises: obtaining a detection signal of a link plate gap of a link plate conveyor belt through a photoelectric sensor; and obtaining the speed of the link plate conveyor belt according to the detection signal. The invention solves the problems in the related art of measuring the speed of the chain plate conveyor belt based on the frequency of the frequency converter with large errors and lag in the measurement results, and is easy to implement, with high measurement accuracy and good real-time performance.

Description

technical field [0001] The invention relates to the field of control, in particular to a method and device for measuring the speed of a conveyor belt. Background technique [0002] As the company pays more attention to the improvement of product consistency and reliability, there are higher requirements for the balance of the speed of the production line (for example, chain conveyor belt), so it is necessary to accurately obtain the speed of the line, and to measure the speed monitor. The current production line speed measurement method is based on the frequency of the frequency converter, and the corresponding speed is mapped through the conversion relationship between frequency and speed. However, this method of measuring the speed of the conveyor belt based on the frequency of the frequency converter will cause a large speed error due to the size and wear of the gear. , The speed of the frequency converter is inconsistent with the speed of the production line, and, due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/36
Inventor 鲜于文祥黄国勇陈其麟胡增云姚广奇
Owner GREE ELECTRIC APPLIANCES INC
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