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Absolute pressure sensor delivers calibrated data for navigation

Fri, Nov 01, 2019

A compact MEMS-based absolute pressure sensor by Würth Elektronik eiSos measures 2.0 x 2.0 x 0.8mm. The Wsen-Pads measures pressure in the range between 26 and 126kPa. Its output data rate can be selected between one and 200Hz. The sensor contains an ASIC and a temperature sensor. This means the output values are already calibrated.

The Wsen-Pads absolute pressure sensor offers the possibility of preparing the measured data for various applications using integrated algorithms that can be activated in such a way that the programming workload for a connected controller is greatly reduced. The measured data can be read out via a standard I²C interface. The I²C interface is extended by an additional interrupt pin whose function can be modified by the user. An application example is using the pressure sensor as an altimeter. The high resolution means the sensor can provide information that enables the position of individual floors in buildings to be mapped for an indoor navigation system. Wsen-Pads is slim, making it suitable for mobile devices. The low power operation means it is possible to supply it with batteries or even energy via energy harvesting.

The piezo resistive sensor is specified for an industrial temperature range from -40 to +85 degrees C. Würth Elektronik also offers a tailored evaluation board.

The sensor is available from stock without a minimum order quantity.

Würth Elektronik eiSos is a manufacturer of electronic and electromechanical components for the electronics industry. The company is one of the largest European manufacturers of passive components and is active in 50 countries. Production sites in Europe, Asia and North America supply a growing number of customers worldwide.

The product range includes EMC components, inductors, transformers, RF components, varistors, capacitors, resistors, quartz crystals, oscillators, power modules, wireless power transfer, LEDs, sensors, connectors, power supply elements, switches, push-buttons, connection technology, fuse holders and solutions for wireless data transmission.

http://www.we-online.com

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White label NFC chip can be used on premium goods

Fri, Nov 01, 2019

Now available with a white label chip called Smartrac OTP, the Circus Pro NFC inlays or tags have been developed and manufactured by Smartrac as a cost-effective option for secure product authentication in premium consumer packaged goods (CPG), industrial components, retail, cosmetics and healthcare, as well as branded pharmaceutical products.

The Circus Pro NFC inlays or tags can be embedded into physical products or packaging to provide real-time tag and message authentication based on cryptographic algorithms. The OTP IC generates one time password values based on hash-based message authentication codes as published by the Internet Engineering Task Force (IETF RFC 4226). To comply with an array of individual customer requirements, the chip supports a choice of digital verification services for secure product authentication and the delivery of exclusive digital content.

All Circus Pro inlays and tags enable customers to easily and securely verify product authenticity with their smartphones.

The Circus Pro range includes Circus Dura, Circus Flex, Circus On-Metal and Circus Tamper Loop NG inlays and tags. Smartrac’s Circus Pro NFC inlays and tags and Circus Pro Flex wet inlays with OTP ICs are available now.

Smartrac specialises in RFID products and IoT solutions, providing both ready-made and customised offerings. Its portfolio is used in animal identification, automation, automotive, brand protection, customer experience, industry, library and media management, logistics, retail and supply chain management.

Smartrac has global Research & Development Centers, production and sales network, and its IoT solutions platform Smart Cosmos. Smartrac received ARC Quality Certification from Auburn University’s RFID Lab for the design and manufacturing of its RFID inlays.

http://www.smartrac-group.com

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Bluetooth low energy module from u-blox includes direction finding

Thu, Oct 31, 2019

Features such as direction finding, long range and operation up to +105 degrees C make up the u-blox NINA-B4 series of standalone modules. They are designed for indoor positioning applications and for deployments in harsh environments.

The u-blox NINA-B4 Bluetooth low energy modules are based on Nordic Semiconductor’s recently announced nRF52833 chip. The module enables Bluetooth long range, Bluetooth mesh, and Bluetooth direction finding for applications in the connected industry, smart homes, buildings, and cities, asset tracking, and healthcare.

Bluetooth’s new direction finding feature, part of the Bluetooth v5.1 specification, brings the benefits of high precision positioning to indoor applications, says u-blox. NINA-B4 is the first u-blox module designed to act as both a transmitter and a receiver in angle of arrival (AoA) and angle of departure (AoD) direction finding and indoor positioning applications.

In AoA-based implementations, stationary beacons equipped with multi-antenna arrays determine the angle of arrival of signals emitted by a tracking device to pinpoint the tracker’s location with sub-meter level accuracy. When AoD is used, the tracking device triangulates its position by calculating the angle of departure of signals from the stationary Bluetooth beacons’ multi-antenna arrays.

The NINA-B4 enables wireless mesh networks for robust communication between large numbers of connected devices. The networks relay messages from node to node and, by simplifying the control of groups of devices, can be used in smart lighting systems in cities and buildings. These applications also further benefit from the module’s enhanced operating temperature range (up to +105 degrees C).

Bluetooth long range is also a feature for the NINA-B4 series, making it suitable for deployments in harsh environments, e.g. to enable wirelessly connected and configurable equipment. Long range not only increases the distance that Bluetooth signals can travel in undisturbed environments, it also makes communications more robust and reliable in unfavourable ones, such as in production plants or on factory floors.

The NINA-B4 series is supplied with u-blox u‑connect software. It provides an interface to configure the required connectivity to integrate Bluetooth into new and existing products.

There is also a powerful Arm Cortex-M4F microcontroller with an open CPU architecture. This allows customers to run their own applications right on the module. Supporting Zigbee and Thread, the first members of the NINA-B4 family have an internal PCB antenna, or alternatively, are supplied with a U.FL connector for an external antenna of choice.

Samples of the NINA-B4 will be available in December.

http://www.u-blox.com

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Volkswagen and NXP begin on the road to V2X

Wed, Oct 30, 2019

NXP Semiconductors is rolling out its RoadLink V2X (vehicle to everything) communication system in the new Volkswagen Golf. The eighth generation Golf is the first volume European car model equipped with V2X, reports NXP.

V2X can prevent accidents by allowing cars to communicate with each other, independent of car brands and without the support of cellular infrastructure.

Dr. Johannes Neft, head of vehicle body development at Volkswagen, said:“The introduction of V2X, together with traffic infrastructure providers and other vehicle manufacturers, is a major milestone in [safety].”

Torsten Lehman, senior vice president and general manager of Driver Assistance and Infotainment at NXP, added: “After proving our technology in more than one million test days globally, we are pleased that our RoadLINK technology, developed in cooperation with Cohda Wireless, was chosen to enable new levels of safety in Europe’s most popular car model, the new Golf.”

Wi-Fi-based V2X is a mature technology has been tested for more than 10 years. Wi-Fi is available independently of paid cellular services and other developing cellular-based technologies can be added to Wi-Fi-based V2X .

Wi-Fi-based V2X is robust, has low latency and real-time communication – regardless of any car brands, advocates NXP. It enables awareness and communication between cars, road infrastructure like traffic lights or street signs, and other road users such as cyclists and pedestrians.

The technology is collaborative, allowing it to “tap into” surrounding sensor data from mutually equipped cars to warn of hazards and prevent accidents. V2X complements other ADAS sensing technologies such as radar, lidar and cameras.

It helps vehicles to “see” more than a mile ahead and around corners to provide early warning of obstacles, hazards, and road conditions and has the ability to “see” through objects, delivering more information than that obtained through line of sight only, continues NXP. Its sensing capabilities are unaffected by poor weather conditions.

NXP claims to offer the only 5.9 GHz V2X system solution proven in volume production today.

NXP and Volkswagen have collaborated for standardisation of V2X communication that addresses cybersecurity and privacy protection.

http://www.nxp.com

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Absolute pressure sensor delivers calibrated data for navigation

White label NFC chip can be used on premium goods

Bluetooth low energy module from u-blox includes direction finding

Volkswagen and NXP begin on the road to V2X

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