November 19, 2019 Volume 15 Issue 44

Electrical/Electronic News & Products

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EV automotive fuse safely interrupts up to 1000 VDC

High voltages and high currents occur in electric vehicles in numerous places. Their battery packs with several thousand rechargeable cells store enormous amounts of energy in order to provide for the demands of drive performance and distance, with the shortest possible charging times. Such applications require highly reliable fuses to safeguard this power. SCHURTER has just launched its AEO 10.3 x 38 mm mini-fuse series, particularly suited for battery protection in electric vehicles. The AEO series safely interrupts short-circuits up to 20 kA at 1000/800 VDC, with a current rating range of 10 to 50 A. SCHURTER's new, patented contact welding process guarantees the highest reliability and overcomes inherent weaknesses in solder joints.
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World's smallest image sensor

The OV6948 from OmniVision Technologies is the new winner of the Guinness World Record for "The Smallest Image Sensor Commercially Available" at a diminutive 0.575 x 0.575 mm. The company developed the tiny sensor to address the market demand for decreased invasiveness and deeper anatomical access in medical devices. OmniVision also offers the companion OVM6948 CameraCubeChip, a fully packaged, wafer-level color camera module measuring 0.65 x 0.65 mm, with a z-height of just 1.158 mm -- shown here next to a single peppercorn. The OVM6948 is the only ultra-small "chip on tip" camera with backside illumination, which provides excellent image quality and better low-light performance.
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Most advanced LIDAR sensor on the market

Velodyne's new Alpha Prime LIDAR sensor has a unique combination of breakthrough innovations that allows vehicles to navigate in unfamiliar and dynamic settings. It uses patented surround-view technology to deliver the combined highest performance specifications for the autonomous mobility industry in one sensor -- with reflectivity returns from over 4.8 million points per sec. Velodyne says this sensor is an unmatched solution in perception, field-of-view, and range for autonomous markets such as transportation, trucking, and robotics. It also offers a new level of power efficiency. Available now for orders and delivery.
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Voice capture at 4x the distance

Texas Instruments has just introduced a new audio analog-to-digital converter (ADC) capable of capturing clear audio up to four times farther away than competing devices. The TLV320ADC5140 is the industry's smallest quad-channel audio ADC with this level of performance. The device is part of a new family of three TI Burr-Brown audio ADCs that enable low-distortion audio recordings in loud environments, along with far-field, high-fidelity recordings in any environment. Applications include high-end smart speakers, sound bars, wireless speakers, high-def TVs, IP network cameras, teleconferencing systems, and smart appliances.
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Powerful LED curing lamp for tight work spaces

DELO now offers a compact LED curing lamp for use in industrial applications with limited work space. The powerful DELOLUX 503 is designed to bond small surfaces, like cameras used in autonomous cars, within seconds on serial production lines. The new lamp directs light diagonally downward so that it does not need to be installed at level with the components that need to be bonded. This gives more moving space to axes or grippers and helps to integrate complex systems. The UV lamp ensures high process reliability through continuous intensity control, internal control, and monitoring of important parameters like LED temperature. Up to four LED heads can be controlled by DELO controllers or by an external PLC, allowing the adhesive to be evenly exposed from several angles.
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Cool Tools: Videoscopes with tons of options

A new line of industrial videoscopes from Titian Tool Supply features inter-changeable video probes that allow for the use of different insertion tube lengths and diameters with one video unit. There are 5 different models with 3 diameter sizes and 3 lengths available. TVG-PRO Series videoscopes feature a 5-in. LCD monitor and have either 180° or full 360° articulation. They are designed for on-site inspections and maintenance on a wide range of transportation equipment, including aviation, locomotive, and gas and diesel engines; machinery, manufacturing, and metalworking, including inspections of castings and cavities; pipeline and container manufacturing; as well as power generation.
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Bend the rules of lighting design: Cut and form LED sheets

VCC is bending the rules of lighting design with its new VentoFlex tiles. The VentoFlex modular lighting system opens up countless ways for architects and lighting designers to make an impact. Available in 12-in. x 12-in. sheets, these innovative LED tiles can be cut and formed around any design element, including rounded corners and tight spaces, without taking up much room at all -- just 0.15 in. (3.81 mm). A pair of scissors is the only tool required to cut VentoFlex tiles to the size and shape you desire. Ten or 15 tiles can be linked together to one driver and dimmer to create thousands of square inches of versatile lighting power! This product is in the running for the 2019 Elektra Awards LED Product of the Year in Europe.
Learn more about this new and exciting lighting technology.


Compact hydraulic/pneumatic position sensors

Novotechnik's TM1 Series of position sensors are designed for use in hydraulic and pneumatic cylinders -- especially in tight-space applications. They are based on magnetostrictive technology and are available in screw flange or plug-in flange models. A ring-shaped magnetic marker moves up and down the sensor's shaft for touchless operation. Specs include stroke lengths from 50 to 2,000 mm (1.9 to 78.7 in.) and accuracy to +/-0.04 percent.
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Spark-proof EC fans use 50% less energy

Orion Fans has extended its electronically commutated (EC) fan product offering to include a 254-mm IP68-ATEX-rated version for waterproof and harsh environment applications. The low-power OA254EC-ATEX Series EC fan combines energy conservation with maximum protection for power-hungry applications involving explosive atmospheres or flammable gases. It delivers air flows of 500 to 830 CFM. EC fans can be used in most any AC fan application with the added benefit of power savings of up to 50 percent. EC fans often enable customers to meet energy-consumption requirements from agencies like ENERGY STAR. Ideal as a drop-in replacement for AC fans, the larger OA254 IP68-ATEX Series EC fans are suited for oil & gas applications including oil rig and oil refining equipment. The fans are also used in walk-in refrigeration systems, commercial display coolers, EV and charging systems, servers, food services equipment, and other applications.
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Protect vulnerable electronics from voltage transients and lightning events

Littelfuse has released a new series of higher surge TVS Diode products in a DO-214AB package. The 8.0SMDJ series is optimized to protect sensitive electronic equipment from transient voltage induced by lightning and other voltage events. Because it combines up to 8,000 W of peak pulse power dissipation in a compact DO-214AB SMC package, the 8.0SMDJ series offers circuit designers a high-surge, space-saving circuit protection solution that can simplify printed circuit board design and improve reliability significantly. Typical markets and applications include: home appliances, consumer electronics, industrial, data centers, AC and DC protection, and PoE protection.
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No-wear flat magnetic angle sensors

Novotechnik U.S. has just introduced the Vert-X 05E Series of magnetic rotary position sensors with compact, flat housing. Interfaces include analog, SPI, and incremental. The series is available in single and redundant versions. The sensors are touchless magnetic angle sensors with a permanent magnet that can be secured to an application's rotating shaft, so there is no direct mechanical linkage between the shaft and the measuring system -- and therefore no wear. Key specifications for Vert-X 05E include 5-mm profile, 0 to 360° measurement range, repeatability of 0.1° or better, and maximum hysteresis of 0.1°. Sample rate is up to 5 kHz, and its active measurement region extends to within 6 mm from edge of housing.
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High-speed image sensor for AI, drones, robotics

ON Semiconductor has introduced the ARX3A0 digital image sensor with 0.3 Mega-Pixel (MP) resolution in a 1:1 aspect ratio. With up to 360 frames per second (fps) capture rate, it can perform like a global shutter in many conditions but with the size, performance, and responsivity benefits of being a Back-Side Illuminated (BSI) rolling shutter sensor. With its small size, square format, ultra-low-power requirement, and high frame rate, the ARX3A0 is particularly suitable for emerging Machine Vision, Artificial Intelligence, IOT, drones, robotics, and AR/VR applications, as well as small supplemental security cameras.
Learn more.


Can electrical resistance be used to predict shielding effectiveness?

Conductive elastomer EMI shielding gaskets use metallic particles to create a conductive path and shield enclosures from electromagnetic radiation. Gaskets with silver particles, which are very conductive, often outperform gaskets with graphite particles. However, this is not always the case. A common misconception is that a measurement of DC resistivity can directly predict shielding effectiveness. Ben Nudelman, market development engineer at Parker, explains why.
Read this informative Parker Hannifin blog.


Standard and custom process heaters -- fast delivery

Durex builds standard as well as custom heaters for a host of applications and industries, including power plants, oil and gas, chemical and petrochemical, pharmaceutical, plastics, packaging, heat treating, cleaning and plating, aerospace, semiconductor processing, and food service equipment. The Cary, IL, company now offers screw plug, flange immersion, and circulation heaters with fast-turn shipping capabilities. Durex uses product platforms to provide standard "catalog" type designs as well as customized designs in the same fast turnaround window. Plug heaters ship in 3 to 5 days. Flange heaters ship in 5 to 7 days. Circulation heaters in 9 to 12 days. No upcharge for customized units or "non-standard" configurations.
Learn more.


Cool Tools: Fluke revamps industrial thermal camera line

Fluke has retooled its entire line of industrial thermal cameras with more premium features packed into every model, providing higher value for the customer and allowing the company to reduce the number of cameras it offers to simplify the buying process. From an industrial pocket thermal imager to a line-up of 640 x 480 resolution infrared cameras, these tools take professional inspections to the next level.
Read the full article.


Scientists develop new sensor 'with 100% accuracy' to save children and pets left in vehicles

A small, inexpensive sensor could save lives by triggering an alarm when children or pets are left alone in vehicles.

The new device, developed by researchers at the University of Waterloo in Canada, combines radar technology with artificial intelligence (AI) to detect unattended children or animals with 100 percent accuracy.

Graduate students Mostafa Alizadeh, left, and Hajar Abedi position a doll, modified to simulate breathing, in a minivan during sensor testing.

 

 

Small enough to fit in the palm of your hand at just 3 cm in diameter, the device is designed to be attached to a vehicle's rear-view mirror or mounted on the ceiling.

It sends out radar signals that are reflected back by people, animals, and objects in the vehicle. Built-in AI then analyzes the reflected signals.

"It addresses a serious, world-wide problem," said George Shaker, an engineering professor at Waterloo. "This system is so affordable, it could become standard equipment in all vehicles."

Development of the wireless, disc-shaped sensor was funded in part by a major automotive parts manufacturer that is aiming to bring it to market by the end of 2020.

Analysis by the device determines the number of occupants and their locations in a vehicle. That information could be used to set rates for ride-sharing services and toll roads, or to qualify vehicles for car-pool lanes.

Its primary purpose, however, is to detect when a child or pet has been accidentally or deliberately left behind, a scenario that can result in serious harm or death in extremely hot or cold weather.

In such cases, the system would prevent vehicle doors from locking and sound an alarm to alert the driver, passengers, and other people in the area that there is a problem.

"Unlike cameras, this device preserves privacy and it doesn't have any blind spots because radar can penetrate seats, for instance, to determine if there is an infant in a rear-facing car seat," said Shaker, a cross-appointed professor of electrical and computer engineering, and mechanical and mechatronics engineering.

The low-power device, which runs on a vehicle's battery, distinguishes between living beings and inanimate objects by detecting subtle breathing movements.

Researchers are now exploring the use of that capability to monitor the vital signs of drivers for indications of fatigue, distraction, impairment, illness, or other issues.

Shaker supervised graduate students Mostafa Alizadeh and Hajar Abedi on the research.

A paper on their project, "Low-cost low-power in-vehicle occupant detection with mm-wave FMCW radar," was recently presented at an international conference in Montreal.

Source: University of Waterloo

Published November 2019

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