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Isolated probing tech for fast-switching power device testing

Keysight Technologies has developed an optically isolated differential probing family dedicated to enhancing efficiency and performance testing of fast-switching devices such as wide-bandgap GaN and SiC semiconductors. Validation of floating half-bridge and full-bridge architectures commonly used in power conversion, motor drives, and inverters requires measurement of small differential signals riding on high common-mode voltages. This measurement can be challenging due to voltage source fluctuations relative to ground, noise interference, and safety concerns.
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Protect sensitive electronics in explosive environments with new aluminum ATEX Cabinet Cooler Systems

EXAIR's ATEX Cabinet Cooler^® Systems deliver a powerful and affordable solution for keeping electrical enclosures cool in hazardous ATEX classified areas -- and they're now available in durable aluminum construction. Engineered for use in Zones 2 and 22, these coolers are UL tested, CE compliant, and meet stringent ATEX standards for purged and pressurized enclosures. With cooling capacities up to 5,600 Btu/Hr., ATEX Cabinet Coolers are ideal for preventing overheating in electrical cabinets. EXAIR offers a comprehensive lineup of systems.
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PLC handbook chock full of must-know information

Automation-Direct's Practical Guide to Program-mable Logic Controllers Handbook has been improved with tons of new need-to-know info, making it a more comprehensive guide to the world of PLCs. Besides covering the basics of PLC history, PLC hardware, and PLC software, this guide takes you deeper into the ever-changing world of PLC communication, the importance of feedback loops, cyber security, and many other areas that are a must-know for any PLC novice or seasoned automation professional.
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Haptic feedback prototyping kit from TDK

Get your customers to feel the difference your products make. TDK has released a development starter kit for fast haptics prototyping. It gives mechanical designers and engineers first impressions of the haptic feedback using PowerHap piezo actuators, shows how the mechanical integration works, and provides a reference design. Applications include automotive, displays and tablets, household appliances, vending machines, game controllers, industrial equipment, and medical devices.
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Mini ESD preset torque screwdriver

Need precision fastening with ESD protection at the smallest torque levels? Mountz has you covered. The new FG Mini ESD Preset Torque Screwdriver is built for low-torque, high-precision tasks. Its compact design makes it ideal for tight spaces and small fasteners, while delivering the same reliable control and ESD protection users have come to expect from Mountz. Two models available: FG25z (3 to 25 ozf.in, 2 to 17.7 cN-m) and FG50z (20 to 50 ozf.in, 14.1 to 35.3 cN-m).
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Laumas load cells and electronics from AutomationDirect

Automation-Direct has added Laumas precision-engineered load cells, transmitters, and accessories that deliver reliable performance in industrial weighing and force measurement applications. The FCAL series high-precision bending beam load cells are ideal for low- to mid-capacity systems. CTL series load cells are designed for both tension and compression, with excellent linearity. The CBL series low-profile compression load cells are perfect for space-limited applications. Laumas load cell transmitters are available too for precise monitoring and control. Very good pricing.
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Engineer's Toolbox: What is ground loop feedback?

Improper grounding can create problems in data logging, data acquisition, and measurement and control systems. One of the most common problems is known as ground loop feedback. Experts at CAS DataLoggers run through five ways to eliminate this problem.
Read the full article.

What is a braking resistor?

According to Automation-Direct, "Braking resistors don't actually provide braking directly -- rather, they allow a drive to stop a loaded motor faster." Why is this important? Protect your AC or DC drive system from regenerative voltage that can create an over-voltage fault on the drive -- especially with high inertial loads or rapid deceleration.
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New Digital Static Meter: Precise measurement, easy use

Static electricity isn't just a nuisance; it's a serious threat to manufacturing efficiency, product integrity, and workplace safety. Unchecked static can lead to costly downtime, product defects, material jams, and even hazardous shocks to employees. If static is interfering with your processes, EXAIR's upgraded Model 7905 Digital Static Meter offers an essential first step in identifying and eliminating the problem. With just the press of a button, this easy-to-use, handheld device pinpoints the highest voltage areas in your facility, helping you diagnose static issues before they become a problem.
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New laser cutting modulating strategy tested with Mikrotron high-speed camera

Modulating a laser beam's intensity distribution optimizes energy delivery to the process zone, resulting in better cutting speed, cut edge quality, and cut kerf geometry. Scientists in Belgium have come up with a new method that they say produces better cutting results.
Read the full article.

All-in-one embedded PLC based on Raspberry Pi 4 -- build control applications

The new PLC CPI-PS10CM4 from Contec Co. is a compact embedded programmable logic controller (PLC) that is loaded with CODESYS, the world's most widely used software PLC. This product uses Contec's original single-board computer, which is based on Raspberry Pi's latest embedded module, the Compute Module 4 (CM4). By using the wide range of peripheral devices for Raspberry Pi, such as Contec's CPI Series, you can build various control applications in a PLC language that complies with the IEC 61131-3 international standard.
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Torque sensors for fastening applications and more

Saelig Company has introduced the Sensor Technology SGR525/526 Series Torque Sensors to provide precision torque monitoring that is critical for performance and safety. The square drive design (for applications with non-cylindrical shafts) allows for seamless integration into power tools, test rigs, industrial machinery, and precision fastening applications, ensuring superior torque measurement without the need for additional adapters or modifications. The SGR525 offers torque measurement only, while the SGR526 provides torque, speed, and power measurement using a 360-pulse-per-revolution encoder. Industries include automotive, aerospace, manufacturing, and research and development.
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Wide-angle camera optimized for larger, faster conveyor belts

Wider conveyor belts operating at higher speeds are now commonplace in modern logistics. To keep up, SVS-Vistek is offering a cost-effective alternative to multi-camera systems with its fxo901CXGE 10-GigE color camera featuring the Sony IMX901-AQR wide-aspect global shutter 16.4-megapixel CMOS sensor. Unlike standard cameras, this unit captures targets in a wide field of view while maintaining high resolutions. The 4:1 horizontal aspect ratio allows one fxo901CXGE to replace an entire multi-camera system, removing the need for image synchronization.
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Handheld thermal imager cuts diagnostic time

The FLIR TG268 is a next-generation thermal imager that provides professionals in the utility, manufacturing, electrical, automotive, and industrial sectors with a lightweight, handheld, affordable condition monitoring tool. Latest enhancements include higher temperature ranges, improved resolution, and larger data storage capacity. Go beyond the restrictions of single-spot IR thermometers to view and evaluate hot and cold spots that may signify potentially dangerous issues. Accurately measure temps from -25 to 400 C. Native thermal images improved with Super Resolution upscaling.
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SOLIDWORKS 2025: Sheet metal design top features from an expert

Find out what's new in SOLIDWORKS 2025 when it comes to sheet metal and weldments, and learn some valuable tips and tricks along the way from TriMech. Topics covered include copying cut list properties, bend notches, tab and slot enhancements, groove beads (a new type of weld bead), performance enhancements, and more. When you're done, check out TriMech's full YouTube channel filled with educational material.
View the video.

Researchers discover security vulnerabilities in virtual reality headsets

[Photo by Eddie Kopp on Unsplash]

 

 

Researchers at Rutgers University-New Brunswick have published "Face-Mic," the first work examining how voice command features on virtual reality headsets could lead to major privacy leakages, known as "eavesdropping attacks."

The research shows that hackers could use popular virtual reality (AR/VR) headsets with built-in motion sensors to record subtle, speech-associated facial dynamics to steal sensitive information communicated via voice command, including credit card data and passwords.

Common AR/VR systems on the market include the popular brands Oculus Quest 2, HTC Vive Pro, and PlayStation VR.

Led by Yingying "Jennifer" Chen, associate director of WINLAB and graduate director of Electrical and Computer Engineering at Rutgers University-New Brunswick, the study will be presented at the annual International Conference on Mobile Computing and Networking in March. Other research collaborators include Nitesh Saxena of Texas A&M University and Jian Liu at the University of Tennessee at Knoxville.

To demonstrate the existence of security vulnerabilities, Chen and her fellow WINLAB researchers developed an eavesdropping attack targeting AR/VR headsets, known as "Face-Mic."

"Face-Mic is the first work that infers private and sensitive information by leveraging the facial dynamics associated with live human speech while using face-mounted AR/VR devices," said Chen. "Our research demonstrates that Face-Mic can derive the headset wearer's sensitive information with four mainstream AR/VR headsets, including the most popular ones: Oculus Quest and HTC Vive Pro."

The researchers studied three types of vibrations captured by AR/VR headsets' motion sensors, including speech-associated facial movements, bone-borne vibrations, and airborne vibrations. Chen noted that bone-borne vibrations in particular are richly encoded with detailed gender, identity, and speech information.

"By analyzing the facial dynamics captured with the motion sensors, we found that both cardboard headsets and high-end headsets suffer security vulnerabilities, revealing a user's sensitive speech and speaker information without permission," Chen said.

Although vendors usually have policies regarding utilizing the voice access function in headset microphones, Chen's research found that built-in motion sensors, such as an accelerometer and gyroscope within a VR headset, do not require any permission to access. This security vulnerability can be exploited by malicious actors intent on committing eavesdropping attacks.

Eavesdropping attackers can also derive simple speech content, including digits and words, to infer sensitive information, such as credit card numbers, Social Security numbers, phone numbers, PIN numbers, transactions, birth dates, and passwords. Exposing such information could lead to identity theft, credit card fraud, and confidential and healthcare information leakage.

Chen said once a user has been identified by a hacker, an eavesdropping attack can lead to further exposure of user's sensitive information and lifestyle, such as AR/VR travel histories, game/video preferences, and shopping preferences. Such tracking compromises users' privacy and can be lucrative for advertising companies.

Oculus Quest, for example, supports voice dictation for entering web addresses, controlling the headset, and exploring commercial products. Rutgers' Face-Mic research shows that hackers may leverage these zero-permission sensors to capture sensitive information, leading to severe privacy leakages.

Chen said she hopes these findings will raise awareness in the general public about AR/VR security vulnerabilities and encourage manufacturers to develop safer models.

"Given our findings, manufacturers of VR headsets should consider additional security measures, such as adding ductile materials in the foam replacement cover and the headband, which may attenuate the speech-associated facial vibrations that would be captured by the built-in accelerometer/gyroscope," she said.

Chen and her WINLAB colleagues are now examining how facial vibration information can authenticate users and improve security, and how AR/VR headsets can capture a user's breathing and heart rate to measure well-being and mood states unobtrusively.

Source: Rutgers University

Published February 2022

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