Tag Archives: sensing

An ultrasound-based sensing technique developed for medicine could have wider application. The question that inspired the technique was: how do we spot leaks from the gut after gastric surgery? Neither ultrasound, CT or MRI scanning could be used to remotely determine local chemistry around the internal wound, according to Northwestern University, which teamed up with the Washington University School of ...

Rohm is to put short wavelength infra-red LEDs and photo diodes in 1.6 x 0.8mm (1608) packages for material detection in portable, wearable and hearable devices. “As SWIR is used to detect the presence of substances and their constituent components by taking advantage of characteristics of water, ice, gases or glucose that absorb specific wavelengths, target applications include light sources ...

ETH Zurich has created a yarn whose capacitance varies significantly with the movement of the textile it is woven into. The researchers “integrated it into a pair of athletic leggings”, according to the university. “Simply by glancing at their smartphone, testers were able to see when they were reaching their limit and if they ought to take a break.” This ...

‘Zeptogram’ caught the eye at ISSCC 2022 conference last week, as researchers from French lab CEA-Leti produced a mass sensor with 170zg resolution for weighing molecules. Not only did they make one such sensitive weighing scale, but 1,024 of them in an array which can be scanned at high speed. The weighing part had been revealed in scientific papers before, ...

NXP has combined NFC, secure authentication, anti-tamper and a sensor interface into a single battery-free chip family called NTAG 22x. The parts are aimed high-volume tagging applications, for example: authenticating retail products or protecting them from tampering, or battery-free environment sensing. They include ISO/IEC 14443-A communication and function as an NFC Forum Type 2 tag, and include AES-128 cryptography and CC EAL3+ ...

MikroElektronika has introduced a sensor and interface board for measuring turbidity – the cloudiness of a liquid. Turbidity Click Bundle incudes a populated PCB conforming to the company’s Click interface standard, and Amphenol TSD-10 turbidity sensor, and a 150mm wire with the appropriate connectors on the end. TO get an ide of size, the slotted head of the sensor is ...

Allegro Microsystems is advocating GMR – giant magneto-resistive – effect sensors instead of Hall effect for automotive rotary wheel position sensing. The company, which makes both Hall and GMR sensors, argues that GMR has lower noise and therefore reduces angular jitter when measuring the position of rotating shafts. “GMR is fundamentally a lower-noise magnetic sensing technology than Hall effect for ...

If you need to know how current sensors work, and what technologies suit which applications, Swiss current sensor maker LEM has a very detailed free download that describes current sensing methods over nearly 50 clearly-written pages. It can be found behind this link

Stackpole Electronics is aiming at consumer and industrial electronic devices with a surface-mount 3.5W current-sensing resistor. Called CSRT2512-UP, it comes in a 2512 case size – 6.3 x 3.2 x 0.7mm. “The AEC-Q200 compliant CSRT2512-UP has unique thin film material properties and processing to provide higher continuous power ratings and higher pulse power ratings than other thin film chip resistors,” according to ...

Vishay has release of two high-resolution automotive grade optical reflective proximity sensors that operate down to 20µm for force sensing applications. In use, an infra-red beam is sent out and its reflection detected. Sensing can be from up-close to half a meter away, and can have enough resolution to detect the displacement of a surface for force, push or glove-independent ...