Lattice enhances sensAI stack to simplify AI/ML deployment

Enhancements to the Lattice sensAI solution stack are designed to accelerate artificial intelligence / machine learning (AI/ML) application development on Lattice’s low power FPGAs. The company has added support for the Lattice Propel design environment for embedded processor-based development and the TensorFlow Lite deep-learning framework for on-device inferencing.

Support for the TensorFlow Lite framework reduces power consumption and increases data co-processing performance in AI/ML inferencing applications. TensorFlow Lite runs anywhere from two to 10 times faster on a Lattice FPGA than it does on an Arm Cortex-M4-based microcontroller, reports Lattice.

Another enhancement is the stack’s support for Lattice Propel environment’s GUI and command line tools to create, analyse, compile, and debug both the hardware and software design of an FPGA-based processor system. Even developers unfamiliar with FPGA design can use the tool’s drag and drop interface to create AI/ML applications on low power Lattice FPGAs with support for RISC-V-based co-processing, claims Lattice.

Lattice sensAI Studio is a GUI-based tool for training, validating, and compiling ML models optimised for Lattice FPGAs.

The Lattice sensAI Studio design environment is for end-to-end ML model training, validation, and compilation. Developers can implement sensAI 4.0 using a simple drag and drop interface to build FPGA designs with a RISC-V processor and a convolutional neural network (CNN) acceleration engine to quickly implement ML applications on power-constrained edge devices.

Leveraging advances in ML model compression and pruning, sensAI 4.0 can support image processing at 60 frames per second with QVGA resolution or 30 frames per second with VGA resolution.

Lattice has also responded to the demand in multiple end markets to add support for low power AI/ML inferencing for applications like object detection and classification. AI/ML models can be trained to support applications for a range of devices that require low power operation at the edge, including security and surveillance cameras, industrial robots, and consumer robotics and toys. The sensAI solution stack helps developers rapidly create AI/ML applications that run on flexible, low power Lattice FPGAs, says the company.

http://www.latticesemi.com

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Configurable DeviceOn Module reduces wireless sensor development time

Enabling instant sensor to cloud connectivity, the WISE-1510-DOM DeviceOn Module is a certified wireless module in a compact industry-standard form factor. It is ready to use with no programming required, says Advantech Europe.

The DeviceOn Module family of modules is a combination of hardware modules and smart device firmware, delivered ready to use, for rapid deployment of custom or semi custom sensors.

This modular approach for smart sensors means that sensor OEMs can concentrate on their core business around the sensing technology, while leveraging Advantech’s capabilities in data transformation and transfer, explains the company. The DOMs can be used in smart waste management, smart street lighting, smart agriculture, asset tracking and cold chain/refrigerator monitoring.

The WISE-1510-DOM DeviceOn Module measures 22 x 30mm and is M2.COM-compliant. The module that contains a wireless modem, MHF4 antenna connector, Arm Cortex-M4 processor and I/O interfaces for sensors. The module is ready to be used on either standard Advantech or custom carrier boards. Wireless connectivity and sensor interfaces can be configured through a graphical user interface (GUI).

Sensor designers can integrate LoRaWAN long-range connectivity into devices. The WISE-1510-DOM module consumes low-power in transmit and receive modes, and has a deep-sleep mode drawing just 36 microA. Variants supporting cellular NB-IoT/LTE-M, Bluetooth, Wi-Fi and other standards will become available soon advises Advantech.

Advantech’s WISE-DeviceOn firmware is integrated in the module, providing software functionality to interface with a range of supported sensors, permitting dynamic sensor configuration like names and thresholds, sensor and event handling as well as data caching. Multiple interfaces are provided for sensor and I/O control, including one UART (optional), general purpose I/Os (GPIOs), four ADC channels, PWM, SPI, and I2C. Configuration or firmware updates can simply be performed via USB.

The DeviceOn server layer can be hosted on any platform, Advantech provides default integrations for Microsoft Azure and Advantech’s cloud platform, WISE-PaaS/EnSaaS, as well as interfaces to other cloud platforms such as Google or AWS, and on premise support, utilising a company’s own IT infrastructure or dedicated DeviceOn server hardware from Advantech.

Advantech also offers three compatible DeviceOn Module sensor boards, the DOM-SB-001 for temperature, humidity, and brightness sensing, the DOM-SB-003 with a brightness sensor and a time-of-flight proximity and ranging sensor, and the DOM-SB-004 for air-quality and brightness sensing.

An evaluation kit is available, in three formats. There is a board-only option, a board with an enclosure, or a board with an enclosure and a WISE-6610-E100-A LoRaWAN gateway allowing scalability up to 100 nodes.

http://www.advantech.eu

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Nordic introduces first PMIC for tight spaces

Nordic Semiconductor’s first power management device is the nPM1100, a power management integrated circuit (PMIC). It combines a USB compatible Li-ion/Li-Po battery charger and DC/DC buck regulator in a compact WLCSP for space-constrained applications.

The low IQ PMIC for the company’s nRF52/nRF53 series SoCs and other compatible devices. The 400mA battery charger and 150mA DC/DC step down regulator is integrated with a USB-compatible input regulator with overvoltage protection in a WLCSP which measures 2.075 x 2.075mm. The PMIC ensures reliable power supply and stable operation for the nRF52 and nRF53 series multi-protocol SoCs and maximises the application battery life, says Nordic. It can be used as a generic PMIC for any application using rechargeable Lithium Ion or Lithium Polymer batteries.  Its form factor makes it suitable for wearables, connected medical devices, and other space-constrained applications.

The nPM1100’s battery charger can bypass the first regulator stage of Bluetooth Low Energy (BLE) applications based on nRF52 and nRF53 SoCs. In this configuration the buck regulator’s high efficiency reduces overall system power consumption while its 150mA current capability increases the current available for other system components from approximately 10 to 100mA.

The nPM1100 features a low quiescent current (IQ) of 700nA (typicall) which can be further reduced to 470nA in “ship mode” (i.e disabling the power output, removing the need for an external power switch), which minimises battery lifetime impact on products in transit. The power management solution takes up as little as 23mm2 of PCB area, including passive components (rising to 27mm2 when optimised for performance).

The nPM1100 input regulator draws its power from either a 4.1 to 6.6V USB input or from a 2.3 to 4.35V connected battery input. It can supply a 3.0 to 5.5V unregulated voltage to the application at up to 500mA output current. The PMIC supports USB standard downstream port (SDP), charging downstream port (CDP) and dedicated charger port (DCP) detection. The input regulator includes over-voltage protection for transient voltage spikes up to 20V.

The battery charger is JEITA-compliant and will charge the application’s Li-ion/Li-Po battery with a resistor-selectable charge current from 20 to 400mA and a selectable termination voltage of 4.1 or 4.2V. The charger includes battery thermal protection and automatic selection from three charging modes: automatic trickle, constant current and constant voltage. The charger also features a discharge current limitation.

The DC/DC buck voltage regulator runs at more than 90 per cent efficiency down to below 100 microA load current. It takes its power from the input system regulator and provides up to 150mA current at a selectable 1.8, 2.0, 2.7 or 3.0V regulated output voltage. The regulator features soft start up and automatic transition between hysteretic and pulse width modulation (PWM) modes. It also supports a forced PWM mode for clean power operation.

No configuration software is required as all settings are pin configurable. The PMIC is compatible with all devices designed to operate within the output voltages and supply currents the chip can deliver. The product’s operating temperature range is -40 to 85 degrees C.

Nordic also offers the nPM1100 evaluation kit with switches for all selectable settings, buttons to enter and exit ship mode and connectors for batteries, USB and headers for all pins on the PMIC. It can be powered by USB via the on-board micro-USB port, from an external DC power supply through header pins or from battery power via the battery connectors on one of the headers.

http://www.nordicsemi.com

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Development kit brings voice control indoors to appliances

To enable far-field voice recognition to its FamilyHub connected hub for smart appliance, Samsung has selected the AISonic development kit to adds voice control to smart home appliances.

Knowles supplies micro-acoustic microphones and speakers, audio processing, and precision devices and the development kit is designed to enable fast and easy voice integration for smart appliances. OEMs and ODMs can build voice-activated control and far-field speech recognition capabilities into smart appliances, such as refrigerators, ovens and microwaves, clothes washing and drying machines, vacuums and dishwashers.

The AISonic White Goods Standard Solution is a development package built on Knowles’ AISonic Audio Edge Processor IA8201 for contextual audio and sensing. It includes an IA8201 reference board accompanied by an application programming interface (API) supporting integration with application processors, or microcontrollers or RF chipsets, a system firmware release configured to support sensors, and pre-integrated microphones from Knowles to enable audio capture and high signal to noise ratio (SNR).

The Knowles White Goods Standard Solution supports voice service interoperability, allowing multiple voice assistants to be integrated into a single device. It can be integrated into a broader ecosystem of smart appliances because customers can securely talk to the service of their choice by simply saying its name.

The smart appliance market is one of the fastest growing verticals in the smart home, with voice control representing a critical technology feature supporting it. According to research from SAR Insight, over 66M voice processors for smart appliances are expected to ship by 2024, representing a CAGR of 55 per cent between 2019 and 2024.

“As the smart home appliance market matures and continues to expand, support for voice interfaces is expected to become a highly requested feature that consumers look for in new appliances,” said Vikram Shrivastava, senior director, IoT Marketing at Knowles. “The ability to ask your refrigerator to read aloud your grocery inventory, play a recipe video while cooking, or ask your oven to pre-heat while you prepare dinner, all contribute to the user experience”.

While desirable, there are constraints which are addressed by Knowles. The AISonic audio edge processor removes this friction by providing high performance in a small size, with high efficiency, privacy and compute power, says Shrivastava. Customers can design appliances with far-field voice processing functionality for accurate listening. Knowles has an ecosystem of hardware system integrators that have developed modules to integrate with legacy appliance control boards.

The AISonic White Goods Standard Solution also includes algorithms for an audio front end suitable for use with Amazon Alexa assistants and other cloud-based ASR APIs through the Knowles OpenDSP partner program. Knowles integration partner Sensory provided the wake word engine for the White Goods Solution, enabling Amazon-certified voice wake and far-field voice recognition for memory-constrained smart appliances.

http://www.Knowles.com

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