News
News

06

2023

-

01

The role of machine vision systems in automation

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【概要描述】In automated production, machine vision system detection is very important, because machine vision detection can replace manual detection, automatic detection, machine vision system detection in the entire automation industry occupy what position? In modern industrial automated production, it involves a variety of detection, measurement and parts identification applications, such as the size detection of auto parts and automatic assembly integrity detection, positioning of electronic assembly line components, beverage bottle cap printing quality detection, product packaging bar code and character recognition are the common characteristics of these applications, are continuous batch production, The quality of appearance is very high. Usually, this highly repetitive and intelligent work is completed by the naked eye. However, in some special cases, such as accurate and rapid measurement of small size, shape matching and color recognition, the naked eye cannot be stable at all, and other physical quantity sensors cannot be realized. With the intensification of industry competition, the company does not even allow 0.1% defects in product quality control. Therefore, it is necessary to ensure 100% inspection compliance rate (i.e. "zero defects") to ensure product continuity. Therefore, people began to consider using CCD camera to capture the image, and send it to the computer or special image processing module, and through digital processing, according to the pixel distribution, brightness, color and other information to determine the size, shape, color, etc., this method combines the speed and repeatability of computer processing with the naked eye vision of high intelligence and abstract ability. Thus forming the concept of machine vision detection technology. Machine vision system detection technology is a new testing technology based on computer vision research. Different from visual pattern recognition and visual understanding in computer vision research, visual detection technology focuses on the measurement of the geometric size and position of objects, such as the three-dimensional size of white objects, the rapid measurement of the three-dimensional shape of the mold, the coaxiality measurement and coplanar measurement of large workpieces. In addition, the detection system of machine vision technology can automatically detect the whole product, which is also very important for the control and guarantee of product quality. With the needs of market development of various industries, in order to better stand in the market, improve the competitiveness of enterprises, more and more enterprises are focusing on the introduction of high-tech, in the industrial automation progress today, machine vision technology is more and more widely used in the industry, more and more recognized and favored by users.

In automated production, machine vision system detection is very important, because machine vision detection can replace manual detection, automatic detection, machine vision system detection in the entire automation industry occupy what position?

In modern industrial automated production, it involves a variety of detection, measurement and parts identification applications, such as the size detection of auto parts and automatic assembly integrity detection, positioning of electronic assembly line components, beverage bottle cap printing quality detection, product packaging bar code and character recognition are the common characteristics of these applications, are continuous batch production, The quality of appearance is very high.

Usually, this highly repetitive and intelligent work is completed by the naked eye. However, in some special cases, such as accurate and rapid measurement of small size, shape matching and color recognition, the naked eye cannot be stable at all, and other physical quantity sensors cannot be realized. With the intensification of industry competition, the company does not even allow 0.1% defects in product quality control. Therefore, it is necessary to ensure 100% inspection compliance rate (i.e. "zero defects") to ensure product continuity.

Therefore, people began to consider using CCD camera to capture the image, and send it to the computer or special image processing module, and through digital processing, according to the pixel distribution, brightness, color and other information to determine the size, shape, color, etc., this method combines the speed and repeatability of computer processing with the naked eye vision of high intelligence and abstract ability. Thus forming the concept of machine vision detection technology.

Machine vision system detection technology is a new testing technology based on computer vision research. Different from visual pattern recognition and visual understanding in computer vision research, visual detection technology focuses on the measurement of the geometric size and position of objects, such as the three-dimensional size of white objects, the rapid measurement of the three-dimensional shape of the mold, the coaxiality measurement and coplanar measurement of large workpieces. In addition, the detection system of machine vision technology can automatically detect the whole product, which is also very important for the control and guarantee of product quality.

With the needs of market development of various industries, in order to better stand in the market, improve the competitiveness of enterprises, more and more enterprises are focusing on the introduction of high-tech, in the industrial automation progress today, machine vision technology is more and more widely used in the industry, more and more recognized and favored by users.


BARTEC explosion-proof switch-Germany BARTEC limit type micro switch/travel switch

BARTEC explosion-proof switches are special-purpose switches developed by the renowned German company BARTEC, which was founded in 1975 in Baden-Württemberg.

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Comparison between optical fiber sensor and traditional sensor

At present, in the Chinese market, fiber Bragg grating (equipped with ASE broadband light source) and distributed sensor based on optical time-domain reflection are the most widely used optical fiber sensing technologies. This technology can basically meet the needs of the medium and low end general market and is well known by industry insiders. The single-frequency fiber laser with spectral linewidth as narrow as 2 kHz and the latest generation of optical sensing technology introduced now are completely different from the optical fiber sensing we now know. This new technical solution can fully meet the higher demand for ultra-long distance, ultra-high precision and ultra-high sensitivity in the high-end market, which cannot be completed by electric sensing and general optical fiber sensing. However, this technology is still in the stage of project approval and pre-research in China. Compared with traditional sensing technology, fiber-based sensors have the following major advantages: 1. Light weight, compact structure, easy to reuse in multiple ways; 2. Resistance to harsh environment, electromagnetic interference and chemical corrosion; 3. There is no need for electricity at the sensing point, and long-distance distributed sensing is possible; 4. Low cost mass production After optical fiber communication, optical fiber sensing has also ushered in an important development opportunity. It has extensive and huge application value in security, military, oil/gas, electricity and scientific research, especially in western developed countries. The optical principle of single-frequency fiber laser for optical sensing is optical frequency time-domain reflection.

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Structure principle and classification of optical fiber sensor

1. Structure principle of optical fiber sensor The traditional sensor based on electricity is a device that converts the measured state into measurable electrical signals. Its power supply, sensitive components, signal receiving and processing system and information transmission are all connected with metal wires. Optical fiber sensor is a device that converts the measured state into a measurable optical signal. It is composed of optical transmitter, sensing element (optical fiber or non-optical fiber), optical receiver, signal processing system and optical fiber. The light emitted by the optical transmitter is guided to the sensitive element through the source optical fiber. At this time, a certain property of the light is modulated by the measured, and the modulated light is coupled to the optical receiver through the receiving fiber, so that the optical signal is converted into an electrical signal, and finally the desired measured signal is obtained through signal processing. It can be seen that the optical fiber sensor is essentially different from the traditional sensor based on electricity in measuring principle. Traditional sensors are based on mechanical-electrical measurement, while optical fiber sensors are based on optical measurement. Light is a kind of electromagnetic wave, whose wavelength ranges from 1 mm in the far infrared to 10 nm in the far ultraviolet. Its physical and biochemical effects are mainly caused by the electric field. Therefore, when discussing the sensitive measurement of light, we must consider the vibration of the electric vector E of light, namely A - amplitude vector of electric field E; ω—— Vibration frequency of light wave; φ—— Optical phase; T - propagation time of light. It can be seen that as long as one of the parameters such as the intensity, polarization state (direction of vector A), frequency and phase of the light changes with the change of the measured state, or is modulated by the measured state, then the required measured information can be obtained by adjusting the intensity modulation, polarization modulation, frequency modulation or phase modulation of the light. 2. Classification of optical fiber sensors Note: MM multimode; SM single mode; PM polarization maintenance; a. B, c functional type, non-functional type, pickup type

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The exhibition of the first Fuji Electric Import Expo ended smoothly

The China International Import Expo is a major measure taken by the Chinese government to firmly support trade liberalization and economic globalization and actively open its market to the world. The exhibition covers seven major industries, including service trade, automobile, high intelligent high-end equipment, consumer electrical machinery and equipment. Fuji Electric Co., Ltd. also participated in the exhibition. With the theme of energy and environment business, in the 108 square meters, blue and white Fuji Electric Exhibition Hall, energy optimization and stabilization were carried out; Achieve stable operation and energy-saving effect of the plant; Environmental measurement of air pollution, etc., to the optimal operation of equipment; It also saves labor and people, and provides four displays of food safety and reassurance.

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琦威(香港)有限公司

Kiwell (Hongkong) Co., Ltd.

Add:  Workshop Unit No. A6, 8/F, Hoplite Industrial Centre, No. 3 & 5 Wang Tai Road, Kowloon Bay, Kowloon, Hongkong

Tel:852 3171 1488  

Fax:852 3111 6959

佛山市琦威电气技术有限公司

Kiwell (Foshan) Electric Technology Co., Ltd.

Add :  Floor 3,Block 5,No.23,Xinghua Road,

           Zhangcha Street,Foshan Clty,Guangdong Province

Tel :   0757-83276620    13827717320 

Fax :  0757-83992196

Mailbox: info@kiwell.cn

 

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