Sleeping with the Google nest hub

Back in October 2020, EDN published my teardown of Google’s then-named Home Hub smart speaker and display, originally introduced two years earlier and subsequently renamed the first-generation Google Nest Hub. The second-generation iteration of the concept, unveiled in March 2021, notably added support for Project Soli, a low-power “miniature radar” also found in Google’s soon-obsolete … Read more

Loud noise makers and worker safety

In some workplaces, at some construction sites, there are various machines doing all kinds of things. The issue is taken up in the following Kohler Power Systems presentation (Figure 1) at pages 18 through 25: Figure 1 Kohler Power Systems presentation. The underlying mathematics merits some attention. Imagine two diesel engine driven power generators, two … Read more

Noninvasive blood sensor allows for continuous monitoring

HYLA is a noninvasive optical blood sensor designed by Inspira to perform real-time and continuous blood monitoring in patients. Sensor measurements of several key indicators, such as the levels of partial oxygen and carbon dioxide pressure, can alert physicians of immediate signs of changes in a patient’s clinical condition. It is also expected to reduce … Read more

Edge AI processors halve power consumption

Sitara AM62 processors from TI boast a low-power design that supports dual displays, 3D graphics acceleration, and small HMI applications. TI says that AM62 processors can reduce power consumption in industrial applications by as much as 50% compared to competing devices, allowing an application powered by AA batteries to remain on for over 1,000 hours. … Read more

Optimizing Resource Deployment in Multi-Host Systems with PCIe Switch Fabrics

Data centers and other high-performance computing environments are increasingly using GPUs because of their ability to rapidly process enormous amounts of data generated in deep-learning and machine-learning applications. However, like many new data center innovations that improve application performance, new system bottlenecks are exposed. An emerging architecture to increase system performance in these applications involves … Read more

Advantages of digital transducers in structural health monitoring systems

Many engineering facilities and modern buildings equipped with automated control systems of engineering systems imply the necessity of structural health monitoring systems implementation (SHM). Many engineering facilities and modern buildings equipped with automated control systems of engineering systems imply the necessity of structural health monitoring systems implementation (SHM). In other words, structural health monitoring system … Read more

Clean Those Connectors

Keeping your connectors and adapters clean will allow for the maximum measurement accuracy and repeatability. I started my engineering career as a microwave engineer at Raytheon in Goleta, Calif. Working at the typical microwave frequencies of 1GHz to 18GHz, we had to be rather religious about keeping our coaxial connectors and adapters clean. Older connectors … Read more

USB 3.1 testing part 3: Power Delivery

Read part 1 of this series on the basics of transmitter and receiver testing for the latest version of USB and part 2 on type-C cable assemblies. The USB PD (Power Delivery) revision 2.0 is the perfect complement to the new USB 3.1 Type-C connector. Just as the Type-C connector is fully reversible and could … Read more

Something smells

Is this cool, or what? As you know, sensors are increasingly taking over our five senses in an ever-growing number of applications. One of the senses that tended to lag a bit (along with taste) is the sense of smell. Peratech is developing an electronic nose using its quantum tunneling composite material to detect the … Read more