Air quality sensor personalises ozone detection

Low power outdoor air quality sensors have been added to the ZMOD4510 sensor platform by Renesas. The sensors are supplied in an IP67-qualified waterproof package and have an artificial intelligence (AI) –based algorithm for low power, selective ozone measurements.

The enhanced ZMOD4510 is claimed to be the industry’s first fully calibrated, miniature digital OAQ sensor solution with selective ozone measurement capabilities. They are designed to offer visibility into the air quality in users’ immediate environments for a personalised experience.

The enhanced ZMOD4510 is based on Renesas’ new low power firmware and can detect specific ozone levels – without reporting on other pollutants. Power consumption is maintained at less than 200 microW. The selective measurement capability allows devices such as smart watches, phones, and smoke detectors to monitor for harmful ozone gases typically found outdoors but which can drift indoors through open windows and doors. Optimising the ZMOD4510 for very low power is key to enabling the longer life cycles required for these types of battery-powered devices.

“The enhanced ZMOD4510 gives manufacturers the selective high precision sensing, small size, and long battery life they need for battery-powered devices  that offer customers a convenient and customised view of their immediate air quality environment,” said Uwe Guenther, senior director, sensing solutions, IoT and infrastructure business unit at Renesas.

Renesas’ software-configurable ZMOD platform allows firmware updates in the field to enable new, application-specific capabilities, such as selective ozone detection.

The ZMOD4510’s ability to quantify selective ozone levels in concentrations as low as 20 parts per billion (ppb) coupled with its low power, small size and outstanding flexibility makes it suitable for mobile and wearable devices, as well as industrial applications such as wireless security cameras and parking meters.

The waterproof 3.0 x 3.0 x 0.9mm LGA package allows the sensor to operate in harsh and submersible environments. The IP67-rated sensor maintains accuracy and performance yet eliminates the need for expensive waterproofing systems.

The sensor is shipped fully calibrated in the hydrophobic and oleophobic package, and customers can apply a conformal coating on their circuitry rather than adding an external membrane to the module.

The ZMOD4510 is calibrated to the US Environmental Agency’s (EPA) Air Quality Index for measuring ozone, and is highly resistant to siloxanes, enabling exceptional reliability for use in harsh environments.

The enhanced ZMOD4510 platform is available now in both a standard and IP67-rated sensor package.

http://www.renesas.com

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Rugged module brings AI to harsh but safety-critical environments

Harsh industrial environments, ranging from factories and farms to refineries and construction sites need inspection and maintenance as part of everyday operations but conditions mean these may not be suitable for human beings to conduct.

Robotics and automation are increasingly used in manufacturing, agriculture, construction, energy, government and other industries, but without AI and deep learning. Nvidia has developed the Jetson AGX Xavier Industrial module, built for intelligent video analytics, optical inspection, robotics, computer vision, autonomy and AI in the toughest environments. The module can be used to deploy AI at the edge in harsh environments where safety and reliability is a critical priority.

This industrial module extends the capabilities of the Jetson AGX Xavier system on module and allows developers to build advanced, AI-enabled ruggedised systems.

The compact, power-efficient design delivers up to 30 trillion operations per second (TOPS) of AI performance. It is built with components tested to demanding industrial standards and including new functional safety capabilities, and to withstand severe shock and vibration and extreme temperature ranges. It is pin-, software- and form-factor compatible with the existing Jetson AGX Xavier module.

Jetson AGX Xavier Industrial combines the supercomputing capabilities of the Jetson AGX Xavier system-on-module with new reliability, availability and serviceability features required to deploy AI in tough environments. These include error correction codes, single error correction, double error detection and parity protection to deliver internal RAM resilience, address and data bus error detection and correction and IP resiliency in industrial applications.

The module comes with functional safety capabilities supervised by the Safety Cluster Engine (SCE), making it suitable for safety-certified industrial-grade products. In addition, it has the same key accelerators and high-speed I/Os included with Jetson AGX Xavier.

Jetson AGX Xavier Industrial features a 512-core Nvidia Volta GPU with 64 Tensor cores, two Nvidia deep learning accelerators, two vision accelerators, an eight-core Nvidia Carmel Arm CPU, an encoder and decoder. The SCE contains dual Arm Cortex-R5 processors that can be used for integrated fault-detection mechanisms, lock-step subsystems and enables built-in-system test. The Cortex-R5, which is in an always-on domain, can be used for safety and error correction functions.

It also includes hardware-verified secure boot, hardware-accelerated cryptography, support for encrypted storage, memory, and other security features to protect customer software.

Powered by the Nvidia CUDA-X accelerated computing stack and JetPack software development kit (SDK), Jetson AGX Xavier Industrial is a fully software-defined platform enabling cloud-native capabilities. Nvidia’s CUDA-X acceleration, free production-ready pre-trained models on NGC and Nvidia Transfer Learning Toolkit give developers the fastest path to build and deploy deep learning and AI training and inference systems.

With the Jetson AGX Xavier Industrial and JetPack, customers can maintain and update ruggedised and safety critical systems in the field using cloud-native technologies for orchestration and management.

The Jetson AGX Xavier Industrial can be used in industrial, aerospace, defence, construction, agriculture, logistics, inventory management, delivery, inspection and healthcare applications.

For example, in the oil and gas industry, it streamlines anomaly and failure predictions at the edge by providing real-time insights based on monitoring or inspection of pipelines, valves, equipment and maintenance work. The module is reliable for use in safety, predictive maintenance and compliance and where equipment remains always-on in changing environmental conditions.

In automobile manufacturing facilities, a factory producing more than 1,000 vehicles a day needs to inspect over six million welding points on-the-fly. Using its AI and computer vision, the Jetson AGX Xavier Industrial can analyse process and qualify data directly from weld guns, which reduces inspection time and improves quality prediction, says Nvidia.

Another example is to detect anomalies in die-casting processes using AI. Early prediction of product quality avoids further process costs and decreases defect rates by up to 40 per cent, reports Nvidia.

Similarly, construction sites employ heavy equipment that must operate reliably in various climates. Other examples are farm tractors which carry fertilisers and herbicide sprayers, and harvest thousands of acres of crops on various terrains. There are also unmanned aerial vehicles (UAVs) and drones which can experience extreme shock and vibration while flying in harsh environments. Other examples of applications are point-of-care ultrasounds and patient monitors require consistent operation over long lifetimes.

 http://www.nvidia.com

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Multi-port, multi-Gbit PoE injector simplifies Wi-Fi 6 access

Wi-Fi 6 and small cell devices can now be installed easily and cost-effectively, wherever they are needed, using the family of multi-port, multi-Gbit injectors offered by Microchip Technology.

Organisations can only deploy today’s Wi-Fi 6 access points (APs) and 5G small cell access nodes where AC power is available, or if the switch can deliver both power and data to them as required. Microchip believes the injectors or midspans are the first multi-port power over Ethernet (PoE) power sourcing equipment (PSE) midspan to enable any multi-Gbit switch to support the high power needs and data rates, with no network configuration or downtime necessary.

The family of multi-port, multi-Gbit PoE PSE injectors can be used to install Wi-Fi 6 devices and small cell equipment. “Patented technology . . . solves the challenge of powering these devices while also supporting their 10Gbit per second data rates,” said Iris Shuker, director of Microchip’s PoE business unit. “This greatly simplifies deployment of Wi-Fi 6 APs while enabling service providers, for the first time, to quickly and inexpensively install 5G picocells and femtocells wherever they are needed, which is rarely near an AC outlet,” she added.

MultiGbit PoE-enabled switches with sufficient power for Wi-Fi 6 devices and small cell equipment are expensive and not widely adopted, says Microchip. A more cost-effective way to inject power into the network for these high-speed devices is to install a Microchip multi-port, multi-Gbit midspans between them and any standard multi-Gbit switch. The family consists of six-, 12- and 24-port configuration midspans. Each midspan supports Wi-Fi 6 devices’ IEEE 802.11ax data rates and delivers up to 60W of output power per port in compliance with the IEEE’s 802.3bt PoE and 10GBASE-T specifications. The PD-9506-10GC, PD-9512-10GC and PD-9524-10GC midspans can be securely monitored and controlled remotely using Microchip’s web-based PowerView Pro platform.

The midspans are available now as part of Microchip’s PoE portfolio. It consists of indoor and outdoor PoE solutions including both multi-port 1Gbit products and single-port multi-Gbit options. Microchip is the only supplier of PoE powered device (PD) ICs, PoE PSE ICs, PoE systems (injectors/midspans and switches) and test equipment. The PoE system portfolio enables delivery of up to 90W of flexible and reliable power over the Ethernet network to WLAN access points, network cameras, IP telephones, IP cameras and other IP-based devices.

http://www.microchip.com

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EPC adds 80 and 200V models to eGaN FET family

Two additions to the eGaN FET family by EPC address the needs of e-mobility, delivery and logistic robots and drone markets which require compact brushless DC (BLDC) motor drives and cost-effective, high-resolution time of flight (ToF).

The EPC2065 is an 80V, 3.6mOhm, 221A pulsed eGaN FET in a 7.1mm2 chip scale package. The size and efficiency reduce overall power system size and weight, says EPC to make it particularly suitable for 32 to 48V BLDC motor drive applications for e-mobility ebikes and escooters, service, delivery, logistic robots and drones.

In all of these applications, miniaturisation is key and the driver is integrated with the motor in the pursuit of this. The ability to operate with significantly shorter dead times results in less noise and less EMI. eGaN FET is capable of high frequency operation to achieve what is claimed to be the highest density for high frequency DC/DC converters for computing and industrial applications and for synchronous rectification.

The second addition to the family is the EPC2054. This is a 200V, 3.6mOhm, eGaN FET in a tiny 1.69mm2 chip scale package. It can deliver 32A pulsed current, despite its small size, with very fast on-off transition times and super small capacitance and inductances. These characteristics make it suitable for industrial lidar / ToF applications.

The low resistance, low switching losses, no reverse recovery charge, fast switching, high frequency capability, and the tiny footprint make the EPC2054 a cost effective and high density FET for a range of applications including high frequency DC/DC, synchronous rectification, wireless power, class D audio, automation, solar and optical.

Alex Lidow, EPC’s co-founder and CEO believes that power system designers will be able to take advantage of these latest eGaN FETs and utilize the high performance, thermally efficient small devices to replace power MOSFETs in a wide variety of applications including emobility, robotics and drones.

The eGaN FETs and related development and reference design boards are available now from Digi-Key.

http://www.epc-co.com

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