ON Semiconductor adds intelligence to LED drivers for connected lighting

Two LED drivers from ON Semiconductor, the NCL31000 and NCL31001, allow OEMs to enhance connected lighting systems.

Manufacturers can use the LED drivers to develop LED luminaires with light-based positioning technology and visible light communication (VLC). By adding data intelligence and accurate positioning (up to 300mm), the LED drivers will add intelligence to lighting in supermarkets, warehouses, hospitals, and airports, says ON Semiconductor.

The NCL31000 is designed specifically for luminaire applications. At the heart of the device is an energy efficient buck LED driver that supports both high bandwidth analogue dimming and PWM dimming down to zero current. The driver includes an integrated 3V3 fixed DC/DC converter and a further adjustable DC/DC (2.5 to 24V), which can be used to power system components such as sensing devices and the microcontroller. Integrating these power solutions in the driver dramatically simplifies system design while boosting efficiency, says ON Semiconductor.

The linear dimming enables VLC, to develop indoor light-based positioning systems that can be safely implemented in many locations where RF-based solutions cannot be used. These can be in hazardous spaces such as mines, or RF sensitive areas such as in hospitals or on board aircraft. The ability to dim to true dark with an accuracy of 0.1 per cent ensures that there is no ghost light at the lowest dim settings. Diagnostics integrate a 10-bit ADC to further reduce system complexity, explains ON Semiconductor. The ADC measures system voltages, currents and temperature to monitor LED and overall system efficiency, and detect any anomalies. A serial (I2C / SPI) interface makes all diagnostic data available to an external microcontroller that can monitor and control the intelligent lighting system. The architecture of the NCL31000 is claimed to deliver EMI that is at least 14dB below the requirements of CISPR15 / EN55015.

The second introduction, the NCL31001 is a companion driver to the NCL31000. It supports multi-string lighting applications, including those with colour control. It has the same features as the NCL31000 except for the DC/DC converters.

http://www.onsemi.com

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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.

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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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Würth Elektronik adds PoE++ to MID-POE series of PoE transformers

Power over Ethernet (PoE) transformers from Würth Elektronik now include PoE++ models which the company has added to its MID-POE PoE transformer series.

These SMT transformers are suitable for flyback or active clamp forward power supplies that comply with the IEEE 802.3bt standard for four pair PoE, or 4PPoE, which is also known as PoE++. The 10 new transformers can provide an output power of up to 95W.

Demand for more power in PoE devices has risen due to the advancements in smart and IoT applications, says Würth Elektronik. In response, the company expanded its MID-POE series for IEEE 802.3bt Type 3 (60W) and Type 4 (90W) devices. The transformers use the low-profile EFD20 and EFD25 packages and offer high power densities over a wide range of common PoE output voltages.

The PoE++ transformers are suitable for video conferencing systems, automation control systems and smart IP cameras. Customer-specific versions are possible on request.

All MID-POE transformers are available from stock without a minimum order quantity.

Würth Elektronik eiSos Group manufactures electronic and electromechanical components for the electronics industry. Würth Elektronik eiSos 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 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.

The service values of the company are characterised by the availability of all catalogue components from stock without minimum order quantity, free samples and extensive support through technical sales staff and selection tools.

Würth Elektronik is part of the Würth Group, which specialises in assembly and fastening technology.

http://www.we-online.com

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