IMP23ABSU – Analog bottom port microphone with frequency response up to 80kHz for Ultrasound analysis and Predictive Maintenance applications
The IMP23ABSU is a compact, low-power microphone built with a capacitive sensing element and an IC interface.
The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process to produce audio sensors.
The IMP23ABSU has an acoustic overload point of 130 dBSPL with a typical 64 dB signal-to-noise ratio. The sensitivity of the IMP23ABSU is -38 dBV ±1 dB @ 94 dBSPL, 1 kHz.
The IMP23ABSU is available in a package compliant with reflow soldering and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.
The circuit presented here is a LED light stick which changes its color in respect with the room temperature. This is an Arduino compatible open source project consisting of 20 x WS2812B Addressable RGB LEDs, LM35 Temperature Sensor and ATmega328 microcontroller. Atmega328 microcontroller reads the LM35 temperature sensor and changes the RGB LEDs color as per sensor analog output. Multiple units of this board can be installed in the room to create full light color effects. Colors of this light will change as the atmosphere’s temperature changes. Placing the LED stick underneath a furniture or behind picture frames on the wall helps create a nice effect as well as improve the ambience of the room.
Temperature Controlled RGB LED Light Stick – Mood Light – [Link]
The concept of Software-defined radio is not new, it has been around for years. It is basically about moving complex signal handling over to a digital software platform via PCs and smart systems.
While we have seen Artificial Intelligence already been implemented in a host of applications like speech recognition, gaming and autonomous vehicles, we are yet to see it being adapted for software-defined radio or incorporated into an RF hardware solution. This is why Deepwave Digital, a hardware and software solutions provider, has taken it upon themselves to come up with a Software-defined Radio with deep-learning muscle, called AIR-T.
AIR-T is a board that combines both high-end hardware and RF deep learning for SDR. AIR-T is equipped with three signal processors: a NVIDIA Jetson TX2 for signal processing and deep learning applications, a Xilinx Artix 7 FPGA for real-time operations and integrated CPUs for I/O, hardware, and software applications. The system also has a dual-channel MIMO transceiver with two 100MHz RX channels and two 250MHz TX channels, along with a rich set of connecting options including GPS Sync via 1 PPS and 10MHz, Ethernet, Wi-Fi, Bluetooth, HDMI, USB 2.0/3.0, SATA, and high-speed digital I/O.
“This versatile system can function as a highly parallel SDR, data recorder, or inference engine for deep learning algorithms. The embedded GPU allows for SDR applications to process bandwidths greater than 200 MHz in real-time.” says Deepwave. “The AIR-T also uses zero copy memory access to overcome the data transfer overhead typically associated with GPU processing.”
Features and Specifications include:
Dual Channel MIMO Transceiver with:
300 MHz to 6 GHz
A pair of 100 MHz bandwidth Rx channels, and,
Two 250 MHz bandwidth Tx channels
Xilinx Artix 7 FPGA
NVIDIA Jetson TX2
Quad-core ARM Cortex-A57 CPU
Dual-core NVIDIA Denver2 CPU
256-core NVIDIA Pascal GPU
8 GB of memory
USB 3.0, USB 2.0/3.0,
1x SATA port
High-speed digital GPIO/UART
1 Gbps Ethernet
WiFi
Bluetooth
GPS Sync via 1 PPS and 10 MHz
Dual Power Mode: 22/14 W
Dimensions: 17.0 cm x 17.0 cm x 3.5 cm
Weight: 0.35 kg
Operating System: Ubuntu 16.04
AIR-T is mentioned to be Ubuntu 16.04 along with a custom GNURadio block, with an option of programming the GPU using Python or C++.
The AI radio transceiver is currently available through the crowdfunding campaign that was launched on crowd supply with a USD 20,000 funding goal. The campaign was funded about three years ago and has so far raised over 900% of its goal which is more than USD 193,000.
More information on the AIR-T can be found on the project’s page on crowd supply.
Recently, we have showed how radar technologies are useful for the automotive industry, when we dove into the Antenna-On-Package mmWave Sensor from Texas Instruments. As a refresher, more precise radars can be put into great use in the vehicles. Further enhanced seatbelt reminders, enhanced children detectors, better airbag deployment and intruder alert are some of the key advantages. Today, we will take a similar route (pun not intended), by overviewing Vayyar’s 4D imaging radar, which has the premise to cut down costs and complexity, while not compromising on safety.
Your first question might be what is perceived of a 4D imaging radar. Let us start with that. Us, humans, can only see three dimensions. Electronics do not have such limitation. Usually, radars, use a moving antenna to examine the environment and extract 3 dimensions from it: azimuth, elevation angle and speed of objects. By adding the Doppler effect to the mix, you can detect if an object is moving towards or away from you, creating this fourth dimension, time. What this means? Better mapping of the environment.
Now that we have that out of the way, we will see how Vayyar takes things to a whole new level. Common radar solutions utilize a small number of antennas for sending (2-3) and receiving (3-4) the signals. They have increased the number to a staggering MIMO array of 48 antennas, which in practice yields a high-resolution mapping of the radar’s surroundings. But it does not end there: they paired it with an ultra-wide azimuth-elevation field of view, making an incredibly accurate 4D point cloud that can differentiate children, adults and objects in car seats, automate emergency braking, assist with parking and even tracking your breathing, and since it does not use cameras, your privacy is not a concern. Overall, it has the ability to replace around 26 sensors in a car, in such a small form factor.
This is what the sensor sees in a car seat
So far, we only discussed its capabilities in our regular automobiles. What about other transportation methods, can they use it? The answer is yes! Real-time passenger counting, occupancy distribution and fall detection are some of its key features for public transportation, such as planes, trains and buses. Overall, it is a very solid package for its size. But what about the pricing, is it competitive? There is not much information on pricing, and it is easily justifiable by its market: this is more for car manufacturers, tier 1 manufacturers and OEM’s. It’s not something you would pick up on a Tuesday for your personal projects. But they promise to cut down costs, and considering what this sensor incorporates, we will take their word for it. As some final thoughts, this is a very interesting product and it would be no surprise if I found it being used in my next car.
Portwell has announced WADE-8212, the latest addition to its family of Mini-ITX form factor embedded system boards. According to Brian Lai, Portwell’s product manager, the new WADE-8212 is designed to provide more powerful multi-tasking function and enhanced high-definition imaging capability with faster network (2.5Gb) connectivity.
Its rich I/Os and expansion support multiple peripheral devices in diverse applications such as industrial automation, robotic manufacturing, automated test equipment, semiconductor equipment, factory process control, automated guide vehicle (AGV), medical equipment, communications appliances, IoT gateway, smart transportation and much more.
WADE-8212 supports the Intel Q470E chipset and the latest 10th Intel Core i9/i7/i5/i3/Pentium/Celeron processor platform (formerly Comet Lake S) up to ten cores/20 threads (35W-80W) in LGA1200 socket.
Additional features:
Dual-channel DDR4 2400/2666/2933MHz Non-ECC SDRAM on two SO-DIMM sockets up to 64 GB.
One and 2.5 Gigabit Ethernet (Intel I219LM and I225LM).
Five COM ports (Two are BIOS configurable).
Six USB 3.2 Gen 1 and four USB 2.0.
Four SATA III ports, GPIO and Audio Jack.
Rich expansion interface includes:
One PCIe Gen 3 x16, 1x M.2 key E 2230 for wireless modules (Bluetooth/Wi-Fi).
One M.2. key M 2242/2260/2280 for SSD.
One M.2 key B 3042 and SIM card socket for 4G/5G.
Triple display includes 1x DP 1.2 (4K resolution).
One HDMI 2.0a (4K resolution).
One VGA (resolution up to 1920×1200) on rear.
One LVDS (resolution up to 1920×1200) connector on board.
ATX power; and onboard TPM 2.0 for security.
“The newly-designed WADE-8212 features the latest Intel 10th Generation Core processors,” said Lai. “This means it now offers up to 20% more cores than previous generation processors, up to 31 percent better performance on multi-tasking compute-intensive applications, and as much as 11 percent improved performance on single-task compute-intensive applications.
“But the benefits don’t stop there. It features MOSFET Heatsink to dissipate heat more efficiently and is suitable for fanless systems. To enhance serviceability, it has the option to use rechargeable CMOS battery for longer CMOS data retention. A compact PCIe card guide is designed to make easier installation and prevention of damage. Its 2.5 Gigabit LAN support (Intel I225LM) can boost networking performance up to 2.5 times faster than a traditional 1 Gigabit LAN, so the user benefits from faster file transfers and smoother video streaming while retaining high quality.
“What’s more, the improved WADE-8212 boasts a wide range of I/O and rich expansion, including 1x PCI Express x16 and multiple M.2 slots for wireless connectivity, storage and increased functionality in a wide range of applications. In addition, our customers not only benefit from the most up-to-date technology and features, but they also gain peace of mind from the long product life span (15+ years) inherent with every Portwell product.”
TDK’s electric double layer capacitors are small in size with a low profile
TDK’s electric double layer capacitor (EDLC) is a charge storage device that offers higher capacitance and higher energy density than an electrolytic capacitor. The EDLC stores charge using an electric double layer formed by ions adhering to the surface of an activated carbon electrode and can be charged in a matter of seconds (see Figure 1). The EDLC series products are constructed with the latest material and processing technologies and feature high capacitance and low resistance. Because a metal foil laminated film is used for packaging, EDLC series products are small in size with a low profile, allowing for space-saving designs. These components are excellent for a wide range of applications, including memory backup in electronic devices, battery load leveling in mobile devices, energy harvesting, and more.
Figure 1: Charging process for an electric double layer capacitor
Features
High capacitance and low impedance
Small size, low-profile design
Operating temperature range from -30°C to +70°C
Applications
Battery assistance
Storage element of energy harvesting
Strong LED flash
Backup application for instantaneous power failures
EPCOS’ medical sensors precise measurements in the flow lines allow flow rates to be calculated accurately in ventilator equipment
TDK Corporation’s B58621V range of highly accurate differential pressure sensors, are designed as printed circuit boards. The sensors are designed for measurement ranges of 16 mbar full-scale (FS), 100 mbar FS and 7 bar FS, with an absolute accuracy of up to ±1% FS at temperatures from -20°C to +70°C.
The footprint of 24 mm x 26 mm accommodates pressure ports and inlets (allowing for simple screw fitting and easy maintenance) as well as two plug connectors for easy implementation of daisy chain systems. The integrated SPI enables easy integration into various digital applications. The sensors are EN ISO 13485-certified for use in medical devices. Precise pressure loss measurements in the flow lines allow flow rates to be calculated accurately in ventilator equipment, and they are particularly well suited for mobile ventilators due to their extremely low profile of only 6 mm. The sensors are also suitable for monitoring filters and gas admixtures.
The VCNL36825T integrates a proximity sensor (PS), and a VCSEL into one small package. It incorporates photodiodes, amplifiers, and analog to digital converting circuits into a single chip by CMOS process. PS programmable interrupt features of individual high and low thresholds offers the best utilization of resource and power saving on the microcontroller.
Key features
Integrated modules: VCSEL, proximity sensor (PS), and signal conditioning IC
Low power consumption I2C (SMBus compatible interface)
1.6 mm single hole opening design
Temperature compensation: -40 °C to +85 °C
Additional features
Package type: surface-mount
Dimensions (L x W x H in mm): 2.0 x 1.25 x 0.5
Integrated modules:
Vertical-cavity surface-emitting laser (VCSEL)
Proximity sensor (PS)
Signal conditioning IC
Interrupt function
1.6 mm single hole opening design
Supply voltage range VDD: 2.64 V to 3.6 V
Low power consumption I2C (SMBus compatible interface)
Interface: I2C bus
Temperature compensation: -40 to +85 °C
Floor life: 168 h, MSL 3, according to J-STD-020
Proximity functions:
Immunity to red glow (940 nm IRED)
Programmable IVCSEL sink current
Intelligent cancellation to reduce cross-talk phenomenon
Smart persistence scheme to reduce PS response time
Low power consumption mode
Sunlight cancellation up to 100 klx
Interrupt:
Programmable interrupt function for PS with upper and lower thresholds
Adjustable persistence to prevent false triggers for PS
VEML3235SL is an advanced ambient light sensor with an I2C protocol interface and designed using the CMOS process
VEML3235SL is an advanced ambient light sensor with an I2C protocol interface and designed using the CMOS process. The VEML3235SL incorporates a photodiode, amplifiers, and analog circuits in a single chip. The best spectral sensitivity is used to obtain a response close to the response of a real human eye. It has excellent temperature compensation and a robust refresh rate setting that does not need an external RC low pass filter. Software shutdown mode is provided, which reduces power consumption to be less than 1 μA. The sensor’s operating voltage ranges from 2.6 to 3.6 V and can detect a wide range of ambient light intensities.
The T3AWG3252’s analog/digital synchronized output represents a valuable tool to simulate, troubleshoot, or validate digital designs.
Saelig Company, Inc. has introduced the Teledyne LeCroy T3AWG3252 Multifunctional 16-bit Arbitrary/Function Generators that are designed with an innovative architecture that features synchronized analog signal and digital pattern generation. This multifunction 250MHz arbitrary/sweep/function generator combines multiple functions in a single instrument, including a two-channel function and arbitrary waveform generator with an eight-channel digital pattern generator. These three different functionalities are based on an advanced Direct Digital Synthesis (DDS) technology which allows glitch-free on-the-fly changes of all parameters while preserving the selected waveform shapes. All controls and settings are available with touch/swipe gestures on the color LCD. This makes it east to change channels, select the carrier, access the modulation parameters, access the waveform gallery to quickly import a chosen signal, or use the virtual numeric keyboard to change parameter values.
The variable clock, true-arbitrary technology of the Arbitrary Waveform (AWG) / Digital Pattern Generator lets the user create complex signals of synchronized analog waveforms as well as digital patterns. Users can create signals in a sequence, or apply loops, jumps, and conditional branches. The analog/digital synchronized outputs represent a valuable tool to simulate, troubleshoot, or validate digital designs. Users can use the waveform sequencer to generate quite complex or very long signals with multiple waveform shapes. The AWG mode uses a variable or synchronized sample rate ‘True-Arb’ technology to suit applications requiring extremely high signal fidelity. The platform’s deep memory enables the capability to store numerous long waveforms.
16-bit vertical resolution
1GSa/s sample rate
128Mpts (up to 1Gpts option) memory on each channel
16,384 waveform entries in the sequencer
Output impedance 50 Ohm and 5 Ohm selectable
+ / – 24V output
Application tasks for which this test instrument is especially suited include the Distortion Test for Automotive Ethernet 100Base-T1 and 1000-Base-T1Power and the Semiconductor Dynamic Behavior Test, made easier with the instrument’s versatile double-pulse test capability. Among the compliance tests specified for the Automotive Ethernet standard none is more complex to set up than the transmitter distortion test. Using the T3AWG3252, as well as a Teledyne LeCroy oscilloscope and the QualiPHY Compliance Manager, testing is greatly simplified. The T3AWG3252’s excellent Harmonic Distortion performance, combined with the output voltage amplitude range and the precise tuning of the delay and phase of the differential signal pairs, makes the T3AWG3252 a perfect tool for emulating the disturber signal to assist in avoiding pitfalls encountered during the execution of the test. The T3AWG3252 can also quickly determine the dynamic behavior of power devices. The standard feature Double Pulse function required for testing MOSFETs and IGBTs is made simpler because the two pulses can have a different amplitudes, rise-times, fall-times, and widths.
The Teledyne LeCroy T3AWG3252 Multifunctional 16-bit Arbitrary/Function Generator is available now from their authorized North American distributor Saelig Company, Inc. Fairport, NY.
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IMP23ABSU – Analog bottom port microphone with frequency response up to 80kHz for Ultrasound analysis and Predictive Maintenance applications
