Marktech Optoelectronics has introduced a new family of silicon photodiodes that includes devices optimized for precise near-infrared (NIR) detection with minimal visible sensitivity and a blue-green-enhanced version with peak responsivity at 525 nm. These photodiodes feature low junction capacitance and fast response in compact molded through-hole packages, making them suitable for optical switches, light-barrier sensors, spectroscopy, fluorescence, and […]
Photoelectric
FAQ on optical proximity sensing: part 1
A light source and photosensor combine for effective, reliable, non-contact proximity detection of nearby objects. Non-contact proximity sensors detect the presence or absence of nearby objects (including animals and people) using basic physics phenomena such as capacitive and inductive electromagnetic fields, light, or sound. Many techniques are used for this sensing, each offering different operational […]
What really counts?
Sesame Street’s Count von Count loves to count things. However, depending on what needs to be counted, there are a variety of different techniques. Is it people, objects, steps, or? Counting people Turnstiles are commonly seen at events, fairgrounds, stadiums, arenas, amusement parks, or anywhere pedestrian counting and/or pedestrian crowd control is required. The simplest […]
Has interest in particulate matter sensing increased?
Traditionally, summer wildfires are associated with California and the west coast. With the recent Canadian wildfires spreading smoke and dense particulates to extensive areas in the eastern and southern U.S., monitoring outdoor particulates has become an important topic for areas of the U.S. that are not normally that interested. On June 8, the U.S. National […]
Improved IDEC photoelectric sensors boost performance and capabilities
IDEC Corporation introduces the SA2E general-purpose photoelectric (PE) sensor family, in five major models, each of which improves or replaces proven SA1E products. A new ASIC, common to the entire offering, provides a significantly improved price/performance ratio, while delivering better response times and more capable detection. SA2E PE sensors are offered in five major variations: […]
ProSense F18 Series 18mm round photoelectric sensors from AutomationDirect
AutomationDirect has added ProSense F18 series 18mm round sensors to their extensive lineup of photoelectric sensors. The F18 series features sensing distances up to 25m, rugged PBT thermoplastic housings, and an IP67 protection rating. These general-purpose sensors are available in diffuse, diffuse with adjustable background suppression, polarized retroreflective, and through-beam sensing styles. The new ProSense […]
How do sensors improve home appliances? Part 1
Today’s home appliances are increasingly connected for remote monitoring and control and smarter due, in part, to numerous sensors. The sensors help even lower-end appliances implement their basic functions and, more importantly, enable smarter, top-end appliances. While sensors provide these capabilities for several home appliances, this two-part series will describe sensing functions for large appliances […]
How can sensors protect a diamond center vault?
In Belgium’s’ Antwerp Diamond District, eighty percent of the world’s rough diamonds passed through a three-square-block area. The Diamond Squad, the world’s only specialized diamond police, provided 24-hour police surveillance and 63 video cameras monitored the district. In this area, the Antwerp Diamond Center vault was thought to be impenetrable. In addition to having a […]
How do sensors impact ATMs?
It’s well known that automobiles and smartphones have several sensors to improve today’s capabilities over those of previous generations. However, they are not the only products that impact consumers’ lives to do so. For example, automated teller machines (ATMs) have a surprising number and different types of sensors to perform a variety of functions. Even […]
What’s new in color sensing?
Advancements in color sensing technology and its increased use in industrial automation are increasing the adoption of color sensing technology across several industries. Color sensing devices are extensively used to detect the color of the surface and to monitor the color consistency in packaging, textile production and automotive applications. For example, in the packaging industry, […]
