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vision sensors – science isu

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nicole stinson

on 25 January 2013

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Transcript of vision sensors – science isu

Vision sensors are also related to living cells. The sensors are used to scan all sorts of foods, including things like fruits and vegetables. As we know from the biology unit, plants are made up of cells. Do you remember the different parts of a plant cell? Vision Sensors In Food Safety What is a vision sensor and what does it do? How does it connect to science and the different units we covered this semester? As we learned in the Optics unit, when the wavelengths of light decrease, they increase in energy. X-rays have smaller wavelengths and therefore higher energy than ultraviolet waves, but lower than gamma rays. This is why we find x-rays between these two on the electromagnetic spectrum. We usually talk about X-rays in terms of their energy rather than
wavelength. This is partially because X-rays
have very small wavelengths, and also due to
the fact that X-ray light tends to act more
like a particle than a wave. X-ray detectors
collect actual photons of X-ray light. A photon
is a particle representing a quantum of light
or other electromagnetic radiation. Review of Light and Energy Vision Sensors In Industry and Improvements The advantages of vision sensors are considerable, and many processes that involve a human inspection can use vision sensors to maximum efficiency. Industries already employing machine vision systems include food packaging and beverage bottling, car manufacturing, electronics, semiconductor assembly and pharmaceutical companies. Common tasks for machine vision
include robot guidance and counting. Review! Vision sensors are related to the biology unit because they are a type of imaging technology. We learned about many different medical imaging technologies. Can you remember some of the names of the different technologies we learned about? The CFIA is the Canadian Food
Inspection Agency. The CFIA is responsible for ensuring that the food and beverages that Canadians buy and consume are safe. They are in charge of food recalls nationally. They also make sure that companies that produce food are complying to their rules and regulations by regularly performing inspections in their facilities. Vision Sensors + Biology Vision sensors are connected to biology because they keep our food safe, which in turn prevents us from becoming sick. The foods that are checked using this system or similar concepts are usually packaged using plastic, and despite companies' best efforts to keep the product safe and free of contaminants, pieces of the packaging can find their way into the finished product. Vision sensors are a type of imaging technology and thus tie into the biology unit (medical imaging technologies). Vision Sensors + Optics Vision sensors, as their name suggests,
depend entirely on optics to work. Taking
into account that a vision sensor is
essentially a camera, it has a lens and
other components that are found in
optical systems. They detect light and
can see through layers that the human
eye alone cannot penetrate. What is a vision sensor? Vision sensors + x-rays What is the CFIA? Although the CFIA does its best to maintain a standard for food safety, unfortunately they sometimes miss something. When a safety regulation isn't observed, whether it's accidentally or purposefully, their product is recalled and the CFIA releases a warning to the public about that specific product. The company is then investigated, and if it is found that they weren't observing the correct procedures, they can be shut down entirely. Vision sensors consist of a video camera, display and interface, and computer processor to automate industrial processes and decisions. Vision sensors are commonly used in different types of x-ray machinery. They can be used to detect the presence of unidentified matter in products. Matter is anything that has mass and takes up space.
Vision sensors are a crucial part of
food safety in Canada. By detecting foreign substances or objects in the food Canadians consume prior to sale, vision sensors protect us and keep us safe from potential sickness or injury. Vision Sensors + Climate Change Vision sensors are aids to to the pre-packaged food industry, which is actually considerably harmful to our environment. Food that is produced abroad must then be transported to the consumers., and excessive transportation of heavy material (truckloads of food) results in the release of greenhouse gases into the environment, contributing to the anthropogenic greenhouse effect. X-Ray
An X-ray is a high-energy radiation that can easily penetrate skin and tissue but not metals and bone and is the most common form of medical imaging.

Fluoroscopy
A fluoroscopy is a technique that uses a continuous beam of x-rays to produce images that show the movement of organs such as the intestines in the body.

Radiotherapy
Radiotherapy is the use of x-rays to treat cancer by damaging DNA and killing cancer cells or preventing them to multiply.

Ultrasound
Ultrasound imaging uses high frequency waves to produce images of soft tissues and organs.

Computed Tomography (CT)
Known as CAT scans, Computed tomography uses x-ray equipment to form a three dimensional image from a series of images taken at different angles of the body.

Magnetic Resonance Imaging (MRI)
MRI uses powerful magnets and radio waves to produce detailed images of the body.

Nuclear Medicine
Nuclear medicine uses radioisotopes (a radioactive form of an element that emits radiation) to provide images of how tissues and organs function.

Positron Emission Tomography (PET)
A PET is a type of nuclear medicine where a patient is given radioisotopes that emit particles called positrons.

Biophotonics
Biophotonic imaging uses interactions of light with cells and tissues to diagnose and treat abnormalities. The particles of light are scattered by atoms in the molecules of the cells.

Mammogram
The mammogram uses x-ray to check breast tissue for the presence of cancer.

Angiogram
The angiogram is used to study the blood vessels of the heart and brain.

Amniocentesis
The process of where a needle is used to take some amniotic fluid to detect down syndrome, cystic fibrosis or spinal bifida.

Echocardiogram
The echocardiogram is used to check abnormalities in the heart or blood vessels.
Ribosomes: Small, spherical structures, attached to the endoplasmic reticulum.

Vacuoles: Large, fluid filled storage cavities, containing water, minerals, food or wastes.

Cytoplasm: The protoplasm, located outside the nucleus, in which all organelles are found.

Chloroplast: A green body found only in plant cells.
Cell wall: The structure made out of cellulose forming the outermost boundary of a plant cell.

Cell membrane: The selectively permeable barrier surrounding both plant and animal cells.

Mitochondria: The organelle, also known as the “powerhouse of the cell”, which breaks down food to release energy.

Golgi Apparatus: The organelle which packages proteins into vacuoles. Nucleus: The large organelle, usually found in the center of the cell, which directs all of the activities of the cell.

Chromatin: Protoplasm contained within the nucleus carrying DNA. (?)

Nucleolus: A small, spherical structure within the nucleus involved in protein production.

Rough Endoplasmic Reticulum/Smooth Endoplasmic Reticulum: A network of passageways through the cytoplasm, found in rough and smooth varieties. Vision Sensors are also very much related to our optics unit. The vision sensors use x-rays to look at food and the packaging, and x-rays use radiation to do so. - Light travels in ______________.
- Energy travels in ___________.
- A wave is a disturbance that transfers energy from one point to another without transferring __________.
- The highest point on a wave is called the _______ and the lowed point is called the ___________.
- The level were there are no waves is the _______________.
- ________________ is the distance from one place in a wave to the next similar place on the wave. (crest to crest or trough to trough)
- _______________ is the wave height from the rest position to the trough or the rest position to the crest.
- _____________ is the rate of repetition of a wave.
- The larger the _____________, the more energy is carried.
- The higher the frequency the __________ the wavelength.
- The longer the wavelength, the __________ the frequency.
- The speed of __________ is calculated by speed= wavelength times frequency. W O R D B A N K frequency trough
waves matter
wavelength amplitude
crest straight lines
rest position smaller
lower energy The Electromagnetic Spectrum (in order of decreasing wavelength) 1. Radio waves 2. Microwaves 3. Infrared waves 4. Ultraviolet waves 5. X-rays 6. Gamma rays Plastic is commonly used by
food processing operations in
liners for containers, disposable
gloves, food testing instruments,
hearing protection, identity badges, conveyor parts, and guides along conveyors. Despite extensive safeguards, these items or small fragments of them sometimes make their way into the product stream and end up in the finished product. To help detect foreign material in products on food processing lines, most producers currently use plastic items with bright colours so that an employee will find the items. New research is trying to build a color vision system that will automatically detect and then remove unwanted objects from the food stream. Vision sensors environmental impact While the production of vision sensors has little to no direct impact on the environment, manufacturing pre=packaged food can have an enormous negative effect on the planet. Factories where these products are made and then distributed from have severe consequences on our planet due to the huge amount of energy they require to function. The plastic that is used to package these products can also end up polluting the environment if we aren't careful to recycle properly. By: Anna Licht, Emily Martinez & Nicole Stinson

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