Electronic article surveillance (EAS) is a technological method for preventing shoplifting from retail stores, pilferage of books from libraries or removal of properties from office buildings. Special tags are fixed to merchandise or books. These tags are removed or deactivated by the clerks when the item is properly bought or checked out. At the exits of the store, a detection system sounds an alarm or otherwise alerts the staff when it senses active tags. Some stores also have detection systems at the entrance to the restrooms that sound an alarm if someone tries to take unpaid merchandise with them into the restroom. For high-value goods that are to be manipulated by the patrons, wired alarm clips called spider wrap may be used instead of tags.
Also known as a wire harness, cable harness, wiring assembly, or wiring loom, a cable assembly is a grouping of cables or wires that transmits signals or electrical power. In binding the cables together, a cable assembly works to prevent disruption to the signal that might be caused by vibration, abrasion, moisture, fire, or electrical malfunctions (sometimes called shorts). A cable assembly can be created using a number of different casings — straps, cable ties, cable lacing, sleeves, electrical tape, conduit, braiding, a weave of extruded string, or a combination of the these materials – but the purpose is always to increase the efficiency of the products. Cable assemblies are designed according to geometric and electrical requirements, which are translated into a diagram that is used in the preparation and assembly of the harness. First the wires are cut to the desired length followed by a marking process (either manual or automated) for identification purposes. Next, the wires are stripped to expose their metal cores and assembled together with any extra terminals or connectors housings required. The bundle is then clamped onto a form board or assembly fixture. This finished mass is fitted with any protective sleeves, conduit, or extruded yarn. The entire process is usually completed by hand because of the intricate processing required at various stages of production, such as routing the wires through sleeves, taping, crimping terminals onto wires, inserting one sleeve into another, and fastening the strands with tape, clamps, or cable ties.
The piezoelectric ceramic is a kind of functional ceramic materials which can create electricity when subjected to a mechanical stress. They will also work in reverse, generating a strain by the application of an electric field. In sensors they make it possible to convert forces, pressures and accelerations into electrical signals, and in sonic and ultrasonic transducers and actuators they convert electric voltages into vibrations or deformations.
Jet Engines is a reaction engine discharging a fast-moving jet that generates thrust by jet propulsion. This broad definition includes turbojets, turbofans, rocket engines, ramjets, and pulse jets. In general, jet engines are combustion engines.
Electronic Shelf Label, also known by the acronym ESL . It is the latest solution for inventory and price management in the retail sector, based on the use of advanced IT technology. ESL replaces conventional paper price tags attached to the shelves of supermarkets and department stores with, for example, LCDs and electronic paper (E-paper) that show information on product price, sales promotions, etc.
This Dust Sensor gives a good indication of the air quality in an environment by measuring the dust concentration. The Particulate Matter level (PM level) in the air is measured by counting the Low Pulse Occupancy time (LPO time) in given time unit. LPO time is proportional to PM concentration.
Automated Fingerprint Identification Systems (AFIS) is a method in which fingerprints from individuals are stored as digital images in a database. Each fingerprint has features like arches, loops, and whorls that are unique to an individual. The current version of AFIS has been in use only for a few years and has revolutionized the way matches are made. Automated fingerprint identification systems are primarily used by law enforcement agencies for criminal identification initiatives, the most important of which include identifying a person suspected of committing a crime or linking a suspect to other unsolved crimes.
The educational robot is specially developed by the manufacturer in order to stimulate students' interest in learning, cultivate students' comprehensive abilities. It can be robot products, kit or parts. In addition to the robot body itself, there are corresponding control software and teaching textbooks and so on. Because of adapting to the new curriculum, educational robot has played a positive role in the cultivation and improvement of students' scientific literacy.
A deep fryer is a kitchen appliance used for deep frying. While commonly used in commercial kitchens, household models are available and have become common. Deep fryer provide cooks with the opportunity to produce restaurant-quality fried foods. While they are not among the list of mandatory kitchen appliances, deep fryers are becoming more practical due to their convenience. The fryer's capacity level allows cooks to fry a variety of foods.
Intravenous Solutions is the infusion of liquid substances directly into a vein. Therapies administered intravenously are often included in the designation of specialty drugs. Intravenous infusions are commonly referred to as drips because many systems of administration employ a drip chamber, which prevents air from entering the blood stream (air embolism), and allows an estimation of flow rate.