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Machine vision: Check part orientation and more

Automation-Direct has entered the industrial vision market with the addition of the Datalogic Smart Vision sensor. This sensor is an intelligent self-contained system that can capture an object's image as it passes by and make decisions based on the details of that image. Built around a powerful multiprocessor platform featuring embedded artificial intelligence tech, the Smart-VS sensor is highly advanced but remains simple to configure. Applications include part orientation for pick-and-place systems, verifying proper application of tamper-proof seals, and checking solder connections in circuit board production.
Learn more.

Ultra-compact IEC appliance inlet saves valuable interior space

SCHURTER continues to meet today's increasing demand for smaller electronic equipment with the launch of its 5121 filtered appliance inlet. The compact filter series features an IEC C14 inlet with capacitors and a fully encased steel housing that reliably shields high-frequency interference conducted through cables or radiated interference. Targeted for applications with shallow installation depth, the new 5121 filter series is available in both standard and medical M80 versions, making it well suited for lab, industrial, medical, telecom, audio/video, and office equipment.
Learn more and get the specs.

Optimize space with mini-FAKRA cables

Amphenol RF has expanded their AUTOMATE Type A mini-FAKRA breakout cable line with additional connector configurations and cable types. The cable assemblies combine industry-standard FAKRA connectors with next-gen mini-FAKRA. This combination allows for a compact solution at the compute module -- an industry-standard sealed solution at the connected device with a max frequency of 3 GHz for automotive and industrial applications such as compute modules, camera systems, and warehouse robotics. This assembly creates a waterproof seal at the connected device for added versatility.
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ScanCobot: Easy entry into 3D metrology automation

The GOM ScanCobot is a mobile measuring station with a collaborative robot, a motorized rotation table, and powerful software that is smart enough to figure out the optimal positions to scan to get the most comprehensive profile possible on a part. The system provides cleaner, more accurate data than manual scans. Exact Metrology has the ScanCobot technology at their Milwaukee area office. Learn about its impressive capabilities.
Read the full article.

How do autonomous vehicles see at night?

Owl Autonomous Imaging is offering a new whitepaper that explains how the Owl Thermal Ranger uses convolutional neural networks (CNNs) to accurately and reliably locate and classify pedestrians and animals in the dark from their own thermal signatures using just one infrared camera. This whitepaper covers the history of convolutional neural networks, how the technology works (AI/machine training), why Owl thinks the CNN approach is the best solution to address current pedestrian safety concerns, and how auto manufacturers can implement it. Very interesting.
Get the Owl AI whitepaper.

Anti-surge resistors handle surges up to 10 KV

High-voltage applications such as HVAC controls, appliance and white goods controls, metering, automation, medical devices, digital storage, and surge-protection devices typically require resistors with high working voltage that may be challenging to find. If the applications are low current or low energy, film resistors are an ideal technology. The ASR/ASRM series from Stackpole offers high working voltages, high pulse voltage handling, and well-defined pulse behavior. For applications with high-voltage surge and low-energy requirements, the ASR/ASRM is a viable replacement for carbon composition resistors, providing improved electrical and environmental stability, better tolerance and TCR, with better long-term availability.
Learn more.

All about slip rings: How they work and their uses

Rotary Systems has put together a really nice basic primer on slip rings -- electrical collectors that carry a current from a stationary wire into a rotating device. Common uses are for power, proximity switches, strain gauges, video, and Ethernet signal transmission. This introduction also covers how to specify, assembly types, and interface requirements. Rotary Systems also manufactures rotary unions for fluid applications.
Read the overview.

What's new in ABAQUS 2023?

The Abaqus Unified FEA product suite offers powerful and complete solutions for both routine and sophisticated engineering problems. Best-in-class companies are taking advantage of these complete solutions for realistic simulation to consolidate their processes and tools, reduce costs and inefficiencies, and gain a competitive advantage. From new techniques in analysis, modeling, and visualization to special features for structural mechanics and linear dynamics, learn what's new in Abaqus 2023.
Learn more.

EMI/RFI gasketing on-demand webinar: Specialty Silicone Products elastomer solutions

Join Dominic Testo, business development manager for Specialty Silicone Products, for this on-demand, in-depth presentation called "EMI/RFI Gasketing: Outside-the-Box Solutions to Protect What's in the Box." Learn about new ways to overcome the restraints caused by outdated compression molding processes; new materials to overcome galvanic corrosion issues; new softer, compliant materials used for shielding; and a whole lot more.
View the video.

Battery-powered wireless multi-sensor module for machine monitoring

TDK has collaborated with Texas Instruments on the new i3 Micro Module, the world's first sensor module with built-in edge AI and wireless mesh connectivity. The i3 Micro Module's ultracompact battery-powered wireless sensor allows users to achieve sensing at almost any desired position without physical constraints like wiring. This dramatically expedites the prediction of anomalies in machinery and equipment, enabling an ideal Condition-based Monitoring implementation for an enhanced smart factory environment.
Learn more.

Fluke 831 Laser Shaft Alignment Tool

Misalignment causes at least half of all damage to rotating machinery, but instead of fixing the problem, teams often just treat the symptoms by replacing bearings, couplings, and seals. The new Fluke 831 Laser Shaft Alignment Tool makes shaft alignment easy with an intuitive guided user interface that enables quick and complete shaft alignment without advanced training or complicated programs.
Learn more.

Image sensor for virtual reality, drones, machine vision

OMNIVISION has just announced the OG0VE global shutter (GS) image sensor, a small-form-factor, high-sensitivity device for AR/VR/MR, metaverse, drone, machine vision, and barcode scanner products. This new-generation image sensor is 26% smaller and more than 50% more power efficient than its predecessor. It supports one-lane MIPI D-PHY at up to 800 Mbps and was designed to address the high market demand for the smallest and lowest power-consuming cameras.
Learn more.

Smallest Smart Motor Module for DC fan applications

Alpha and Omega Semiconductor Limited has introduced an extension to its compact Smart Motor Module (SMM) family. Available in an ultra-compact, thermally enhanced 3-mm x 3-mm QFN-18L package, the highly integrated AOZ9530QV SMM is a half-bridge power stage with a slew of features and protections that simplify motor drive designs. It is suitable for use in a large number of BLDC fan applications ranging from PC and server fans to seat cooling and home appliances.
Learn more.

Application Note: Wireless -- Decoupling high-frequency signals from a DC supply

From 5G systems to radio and antenna applications, wireless communication accompanies us throughout our daily lives, so the demand for universal high-frequency amplifiers is correspondingly high. By selecting the optimal passive components, the transmission characteristics of the amplifier can be improved during development. A well-designed layout further improves RF performance. The aim is to transmit both RF signals and the DC supply on a single line without interference or cross-talk. A key component is the inductor for decoupling the RF and DC supplies.
Read this in-depth Würth Elektronik application note.

Smallest all-in-one LIN driver propels relay window lifters

Melexis' new LIN pre-driver IC for relay DC motors offers a combination of high power, compactness, and attractive pricing. The MLX81160 is the latest addition to the company's Gen3 family of compatible embedded motor drivers. Its 48-KB of memory (16 KB ROM for the included LIN protocol and 32 KB Flash for the application software) is suitable for applications like window regulators.
Learn more.

Weird Science: Physicists claim new circuit generates clean, limitless power from graphene

A team of University of Arkansas (U of A) physicists has successfully developed a circuit capable of capturing graphene's thermal motion and converting it into an electrical current.

"An energy-harvesting circuit based on graphene could be incorporated into a chip to provide clean, limitless, low-voltage power for small devices or sensors," said Paul Thibado, professor of physics and lead researcher in the discovery.

The findings, published in the journal Physical Review E, are proof of a theory the physicists developed at the U of A three years ago that freestanding graphene -- a single layer of carbon atoms -- ripples and buckles in a way that holds promise for energy harvesting.

Paul Thibado, professor of physics, holds prototype energy-harvesting chips. [Credit: Russell Cothren, University of Arkansas]

 

 

 

 

The idea of harvesting energy from graphene is controversial, because it refutes physicist Richard Feynman's well-known assertion that the thermal motion of atoms, known as Brownian motion, cannot do work. Thibado's team found that at room temperature the thermal motion of graphene does in fact induce an alternating current (AC) in a circuit, an achievement thought to be impossible.

In the 1950s, physicist Léon Brillouin published a landmark paper refuting the idea that adding a single diode, a one-way electrical gate, to a circuit is the solution to harvesting energy from Brownian motion. Knowing this, Thibado's group built their circuit with two diodes for converting AC into a direct current (DC). With the diodes in opposition allowing the current to flow both ways, they provide separate paths through the circuit, producing a pulsing DC current that performs work on a load resistor.

Additionally, they discovered that their design increased the amount of power delivered. "We also found that the on-off, switch-like behavior of the diodes actually amplifies the power delivered, rather than reducing it, as previously thought," said Thibado. "The rate of change in resistance provided by the diodes adds an extra factor to the power."

The team used a relatively new field of physics to prove the diodes increased the circuit's power. "In proving this power enhancement, we drew from the emergent field of stochastic thermodynamics and extended the nearly century-old, celebrated theory of Nyquist," said coauthor Pradeep Kumar, associate professor of physics and coauthor.

According to Kumar, the graphene and circuit share a symbiotic relationship. Though the thermal environment is performing work on the load resistor, the graphene and circuit are at the same temperature and heat does not flow between the two.

That's an important distinction, said Thibado, because a temperature difference between the graphene and circuit, in a circuit producing power, would contradict the second law of thermodynamics. "This means that the second law of thermodynamics is not violated, nor is there any need to argue that 'Maxwell's Demon' is separating hot and cold electrons," Thibado said.

The team also discovered that the relatively slow motion of graphene induces current in the circuit at low frequencies, which is important from a technological perspective because electronics function more efficiently at lower frequencies.

"People may think that current flowing in a resistor causes it to heat up, but the Brownian current does not. In fact, if no current was flowing, the resistor would cool down," Thibado explained. "What we did was reroute the current in the circuit and transform it into something useful."

The team's next objective is to determine if the DC current can be stored in a capacitor for later use, a goal that requires miniaturizing the circuit and patterning it on a silicon wafer, or chip. If millions of these tiny circuits could be built on a 1-mm by 1-mm chip, they could serve as a low-power battery replacement.

The University of Arkansas holds several patents pending in the U.S. and international markets on the technology and has licensed it for commercial applications through the university's Technology Ventures division.

Source: University of Arkansas

Published February 2021

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