Barometric pressure sensor tracks altitude in harsh conditions

Barometric pressure sensors are a key component in fitness tracking wearables, to determine altitude. Bosch Sensortec has introduced the BMP585 robust barometric pressure sensor that can be used under water and in harsh environments.

It has a liquid-proof gel cover, which means it can be used in wearables that will be exposed to water or other liquids, including salt water and chlorinated water in swimming pools. It includes all the features of Bosch’s existing BMP581 pressure sensor with robustness and low power consumption ensures long battery life in wearables, hearables, and portable applications.

The sensor measures a change in height of just a few centimetres. It can therefore detect movements in fitness training down to the level of individual pull-ups or push-ups. “At the same time, users do not have to worry about environmental conditions – thanks to its ruggedness,” said Dr. Stefan Finkbeiner, CEO at Bosch Sensortec. 

The BMP585 provides reliable mapping data for distance travelled and meters of altitude for hiking or running trips, thus supporting GPS data and enabling accurate localisation and navigation.

With its resistance to water and chemicals, the BMP585 is also suitable for a variety of industrial use cases such as liquid-level detection. The seal blocks access to dust for clog detection in home appliances such as vacuum cleaners.

The BMP585 provides excellent relative accuracy of ±0.06hPa and typical absolute accuracy of ±0.5hPa. The BMP585 has a typical temperature co-efficient offset (TCO) of just ±0.5Pa/K and low RMS noise of 0.08Pa at 1000hPa (typical). Long-term drift over 12 months is only ±0.2hPa.

Typical current consumption of just 1.3 microA at 1Hz data rate substantially extends battery life, said Bosch Sensortec. The BMP585 offers an I2C, I3C and SPI digital, serial interface.

The BMP585 is provided in a compact nine-pin LGA package with a metal lid, measuring just 3.25 x 3.25 x 1.86 mm³, small enough to use in smartwatches and other wearables.

The BMP585 is available in Q2 2023.

https://www.bosch-sensortec.com

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NXP targets advanced edge applications with the i.MX 95 family

Part of NXP’s SafeAssure portfolio, the i.MX 95 applications processor family uses an advanced heterogeneous domain design. This not only powers safety-enabled platforms but also integrates a real time safety domain.

The i.MX 95 family combines high performance compute, immersive Arm Mali-powered 3D graphics, a new NXP accelerator for machine learning and high speed data processing. The technology is suitable for automotive, industrial, networking, connectivity and advanced human machine interface (HMI), says NXP. The i.MX 95 family also delivers high performance safety and security features, developed in compliance with automotive ASIL-B and industrial SIL-2 functional safety standards and including an integrated EdgeLock secure enclave.

A critical requirement for the next wave of edge applications is advanced processing and machine learning capabilities, with high-speed connectivity, to analyse the environment and make intelligent decisions locally, explained NXP. The i.MX 95 family is the first i.MX applications processor family to integrate NXP’s eIQ Neutron neural processing unit (NPU). It also includes a new image signal processor (ISP), developed by NXP.

“The i.MX 95 family brings unparalleled features and performance to markets like automotive and industrial where security and safety are key,” stated Rafael Sotomayor, executive vice president and general manager of Secure Connected Edge at NXP. He believed that the combination of processing and graphics, integrated heterogeneous safety domain and networking capabilities, will support “ a new generation of safe and secure edge platforms”.

The i.MX 95 family integrates a secure enclave to simplify implementation of security critical functions in edge applications, such as secure boot, cryptography, trust provisioning, and run-time attestation. Combined with NXP’s EdgeLock 2 GO key management services, manufacturers can securely provision i.MX 95 SoC-based products for secure remote management of devices deployed in the field, including secure over the air updates (OTA), said NXP. 

The i.MX 95’s integrated eIQ Neutron NPU is part of a vision processing pipeline for use with multiple camera sensors or network-attached smart cameras. The SoC integrates an NXP ISP supporting a wide array of imaging sensors to enable vision-capable industrial, robotics, medical and automotive applications, all backed by comprehensive NXP developer support. The Arm Mali GPU enables scaling from multi-display automotive infotainment centres to industrial and IoT HMI-based applications.

The multi-core application domain, with up to six Arm Cortex-A55 cores, is complemented by an independent safety domain consisting of Arm Cortex-M7 and Arm Cortex-M33 CPUs for low power, real time and high performance processing. The i.MX 95 family is designed to enable ISO 26262 ASIL-B and SIL-2 IEC 61508 compliant platforms. Its functional safety domain serves as a critical capability for many automotive and industrial applications. The i.MX 95 can be used in automotiv safety critical actions, for example voice warnings, instrumentation and cameras. In industrial factory automation, the functional safety domain helps to ensure that an industrial control system will always return to a pre-determined state, even when rest of the system fails.

The 10GbE and two 1GbE ports will contribute to industry 4.0, automotive connectivity domain controllers and IoT smart home gateways, said NXP. In addition to time sensitive networking (TSN) capabilities, wireless connectivity (Wi-Fi, Bluetooth Low Energy, satellite radio, or 5G) can be added via two independent PCIe ports, a USB 3 port and integrated BSP-level drivers, said NXP.

Other features include NXP’s Energy Flex architecture that enables fine-grained independent power management of Cortex-A applications domain and real time Cortex-M safety domain. This allows developers to run the real-time safety domain at all times for sensor data monitoring. It also allows the powering up of the applications domain only when necessary to minimise system-level energy consumption.

There is also support for LPDDR5 and LPDDR4X DRAM and multiple options, within the family to scale performance and features to suit power, performance, and application requirements.

The i.MX 95 applications processors are expected to begin sampling for lead customers in 2H 2023.

http://www.nxp.com

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Automotive SoC excels in LED flicker mitigation for cameras

Omnivision has released its most advanced automotive SoC for surround view systems (SVS) and rear view cameras (RVC). The OX01E20 is pin to pin compatible with 1.3Mpixel designs and brings LED flicker mitigation (LFM) and 140db high dynamic range (HDR) capabilities to the company’s portfolio of automotive single chip image sensor and signal processors. 

The OX01E20 is claimed to provides the industry’s best imaging performance for SVS and RVC across a range of challenging lighting conditions. It also has the most compact form factor and lowest power consumption, said Omnivision. In a single 1/4-inch optical format package, the OX01E20 features a three micron image sensor, an advanced image signal processor (ISP) and full-featured distortion correction / perspective correction (DC / PC) and on-screen display (OSD). Designers can achieve a small form factor with “excellent low light performance, ultra-low power, and reduced cost, while also improving reliability by using only one PCB,” said Omnivision. 

The HDR and LFM performance applies over the automotive temperature range, added Omnivision.

The OX01E20 is built on Omnivision’s PureCel Plus architecture, which is renowned for its low light sensitivity and provides the industry’s best SNR (signal to noise ratio) performance, claimed the company. 

The OX01E20 is ASIL-B safety-compliant. It is sampling now and will be in mass production in June 2023. 

Omnivision is a fabless semiconductor organisation that develops advanced digital imaging, analogue and touch and display products for multiple applications and industries, including mobile phones, security and surveillance, automotive, computing, medical, and emerging applications. 

http://www.ovt.com 

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Renesas releases Wi-Fi development kit supporting new Matter protocol

Renesas has released its first development kit that includes support for the new Matter protocol. Renesas also announced that it will offer Matter support on all future Wi-Fi, Bluetooth Low-Energy and IEEE 802.15.4 (Thread) products, including products from Dialog Semiconductor and Celeno Communications, which it recently acquired.

The Matter securely and robustly connects various smart devices with each other across ecosystems, regardless of the manufacturer to address interoperability conflicts for smart home devices. The application layer protocol abstracts the underlying connectivity technologies such as Wi-Fi, Thread and Bluetooth Low Energy. By using a common software stack, device manufacturers who build with Matter will support various smart home ecosystems and voice services. Smart home users will be able to buy any Matter-certified device regardless of their platform of choice.

Renesas is a member of the Connectivity Standards Alliance. “Connectivity is a critical part of our IoT solutions,” commented Sean McGrath, vice president of the connectivity and audio business division in Renesas’ IoT, industrial and infrastructure business unit. He believed that the company’s broad range of Bluetooth and Wi-Fi solutions, and Thread products in development, mean it is “well positioned to take advantage of the Matter standard in a variety of applications working with customers worldwide.”

Renesas has more than a decade of experience in Bluetooth LE and Wi-Fi. With more than 600 million wireless devices shipped, Renesas offers a broad range of connectivity SoCs used in IoT, wearable products and home networking.

The DA16200 Ultra-Low Power Wi-Fi Modules development kit is based on the DA16200 SoC, believed to be the world’s first Wi-Fi SoC to deliver year-plus battery life for always-connected Wi-Fi IoT devices. 

DA16200 also supports Renesas Quick Connect IoT through the Ultra Low Power Wi-Fi Pmod board. It is fully integrated into Renesas’ e2 studio for easy system development using Renesas MCU, connectivity and other devices. 

Renesas is sampling the DA16200 Development Kit with Matter support to lead customers now and expects to release it broadly by the end Q1 2023.

http://www.renesas.com

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