Wearables have been part of the medical field for a while now, making the work of medical practitioners easier. They help monitor heart rate, temperature,oxygen levels etc. However, to achieve the mission of personalized medicine, centering on delivering the right drug to the right patient at the right dose, therapeutic drug monitoring solutions are necessary. This has moved engineers from the UCLA Samueli School of Engineering and the Stanford School of Medicine to develop a smartwatch capable of tracking a wearer’s metabolization of medicines, by analyzing their sweat. About the smartwatch, Assistant Professor Sam Emaminejad who is the study lead says :
“We wanted to create a wearable technology that can track the profile of medication inside the body continuously and non-invasively…This way, we can tailor the optimal dosage and timing of the intake for each individual. And using this personalization approach, we can improve the efficacy of the therapeutic treatments.”
voltammetric sensing interface
The engineers devised a surface engineering strategy, which enabled them to create a voltammetric sensing interface, featuring an “undistorted potential window,” within which the target electroactive drug’s voltammetric response is dominant and interference is eliminated, rendering reliable target quantification in noninvasively retrievable biofluids (sweat and saliva).
“Leveraging this sensing interface, a fully integrated, wearable solution was constructed to seamlessly render drug readouts with minute-level temporal resolution. To inform its clinical utility, the solution was utilized to demonstrate noninvasive pharmacokinetic monitoring of a pharmaceutical (here, acetaminophen, a widely used analgesic and antipyretic) in a wearable format.”
The smartwatch features an on-board LCD panel for live monitoring and a Bluetooth connection that transmits to an external data capture system for later analysis. At the core of the smartwatch is a Microchip ATmega328-based microcontroller which is connected to a 16-bit Texas Instrument DAC8552 digital-to-analog converter. It also features a Linear Technology LT1462 transfer impedance amplifier, a TI 12-bit ADS1015 analog-to-digital converter, and a Wurth Electronik AMB2621 Bluetooth module for communication. The smartwatch takes advantage of the small molecular structure of many drugs, which enables them to be present in our sweat. This enables the device to analyze the drug due to the quantities found in the sweat, and also detect how much of the drug is still circulating in the wearer’s system. The engineers carried out the test of the watch by tracking acetaminophen (an over-the-counter painkiller) over a short period, using a small electric current to force the wearer to sweat under the sensor.
About the smart watch, co-author Professor Ronald W. Davis says:
“This technology is a game-changer and a significant step forward for realizing personalized medicine.” He continues “Emerging pharmacogenomic solutions, which allow us to select drugs based on the genetic makeup of individuals, have already shown to be useful in improving the efficacy of treatments. So, in combination with our wearable solution, which helps us to optimize the drug dosages for each individual, we can now truly personalize our approaches to pharmacotherapy.”
AAEON, an industry leader in Edge Computing solutions, announces the SRG-3352 Edge IoT Gateway System. The SRG-3352 offers reliable and cost saving edge network operations, with flexibility to connect edge nodes and sensors with cloud services.
The SRG-3352 is powered by the Arm® Cortex-A8 800 MHz RISC processor. This innovative processor reduces the energy requirements of the system, saving electricity costs and allowing the system to be deployed with solar power or battery operated. With very little heat output, the system can operate in a wide range of temperatures from 0°C up to 60°C without loss in performance.
The SRG-3352 is designed to provide a great value and cost-effective platform not only with initial investment, but also in long term costs. With rugged design and Arm processor, the system provides stable and reliable operation, reducing maintenance needs. To connect from edge to cloud, the SRG-3352 supports 3G/4G LTE as well as NB-IoT to help reduce carrier costs.
The SRG-3352 provides flexibility in connecting with edge nodes. Featuring two Gigabit Ethernet ports, USB 2.0 and Micro USB ports, and two RS-485 ports, users can connect a wide range of sensors and devices. With optional wall mounting and DIN rail kits, the SRG-3352 can be deployed anywhere it’s needed. The SRG-3352 is also compatible with popular cloud services including AWS, Azure, and Arm Pelion, or can be configured to work with a customer’s own cloud platform.
AAEON offers customers total end-to-end support to deploy their edge networks, from hardware solutions to helping build and design edge networks from the ground up. AAEON also offers customization and OEM/ODM services to help build the edge network solution customers need.
“The SRG-3352 offers customers better flexibility and reliable operations to bring edge networks together,” said Seven Fan, Product Manager with AAEON’s IoT Division. “Together with AAEON’s industry leading support, the SRG-3352 can help customers build effective and efficient edge networks from Smart Cities to Smart Factories and beyond.”
Optically isolator Arduino Shield has been designed to provide optically isolated I2C communication between Arduino and any other device or sensors that works with I2C protocols. I have used the ISO1540 Low-Power Bidirectional I2C Isolator IC from Texas Instruments to build this project, and the device is compatible with I2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging the Arduino board. The ISO1540 has two isolated bidirectional channels for clock and data lines. The project is suitable for multi-master applications. For applications where clock stretching by the slave is possible. LED D1 is the power indicator for side two. This board requires two separate supplies, side one powered from Arduino UNO 5V, side 2 require separate 3.3V to 5V.
Features
Isolated bidirectional, I2C compatible, communication
Supports up to 1-MHz operation
3-V to 5.5-V supply range, Side 1 Connected to Arduino Uno 5V Supply
Side 2 Supply 3.3V to 5.5V DC
Open-drain outputs with 3.5-mA Side 1 and 35- mA Side 2 sink current capability
The I2C bus is used in a wide range of applications because it is simple to use. The bus consists of a two-wire communication bus that supports bidirectional data transfer between a master device and several slave devices. The master, or processor, controls the bus, specifically the serial clock (SCL) line. Data is transferred between the master and slave through a serial data (SDA) line. This data can be transferred in four speeds: standard mode (0 to 100 kbps), fast mode (0 to 400 kbps), fast-mode plus (0 to 1 Mbps), and high-speed mode (0 to 3.4 Mbps). The most common speeds are the standard and fast modes. The I2C bus operates in bidirectional, half-duplex mode, while standard digital isolators are unidirectional devices. To make efficient use of one technology supporting the other, external circuitry is required that separates the bidirectional bus into two unidirectional signal paths without introducing significant propagation delay. These devices have their logic input and output buffers separated by TI’s capacitive isolation technology using a silicon dioxide (SiO2) barrier. When used in conjunction with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.
I was testing a couple of low-cost laser diodes that come from china and I was wondering why those diodes don’t have any protection/driver circuitry. Those diodes come with a simple series resistor for current control which is not a good idea nor stable. Laser diodes are harmful and should have some sort of constant current circuit as a basic protection for the laser diode. As a result, I built this circuit which provides highly accurate current control. The module is a great tool to drive low-cost laser diodes with superb accuracy. This circuit can drive diode starting from 0 mA to 115mA, usually, these cheap diodes require around 30mA current. The project has an onboard multi-turn potentiometer to adjust the output current with great accuracy. It is advisable to turn the trim-pot to zero level and then hook-up the laser diode.
Adjustable Constant Current LASER Diode/LED driver – [Link]
This slim, plug and play, free-standing thermal screening system offers a touch-less way to protect environments from risks of illness and viruses via advanced thermal imaging, providing instant body temperature measurements with an accuracy of +/-0.5°F
Saelig Company, Inc. has introduced the PF08H1 Facial Temperature Screening Kiosk – an easy-to-use, self-contained personnel temperature screening device that scans in under 3 seconds, thus allowing or denying entry. Using Heimann sensor technology from Germany, a global leader in thermal imaging technology, the PF08H1 Thermal Guard system detects face temperature with an accuracy of ±0.5degF. This touchless, plug and play standalone system does not require any operator participation, with network connection optional. The 11.6″ x 5.2″ x 1″ Thermal Guard, mounted on a 40” sturdy floor-stand, features an 8”high-resolution LCD display, and provides individual body temperature measurements. It can trigger alerts when readings are higher than normal. With face shape recognition technology, the device can also detect individuals with or without protective facial masks. This provides an unobtrusive way of scanning personnel and makes working environments safer. Access can be denied if no mask is detected. The system can be set up to send an alert via email and/or text when a user has a high temperature or isn’t wearing a mask. It can use facial recognition to deny access to strangers, and also time-stamp employee arrival. The device comes with facial biometric recognition technology using Dual Wide Angle Binocular Cameras. It can support various RFID card readers to allow card access identification.
The high-quality infrared thermal sensor detects body temperature from 32 multi-points on the face with an accuracy of ± 0.5degF. The large, high-resolution LCD can be used as a real-time surveillance visual display. The device can be integrated with turnstiles and magnetic lock doors to provide automated and contactless access. This avoids the unpleasant experience of having an employee or security guard pointing handheld devices at guests, and allows business owners to protect their establishment with minimal distraction & effort. This product is not a medical device and is not intended to be used for diagnostic purposes.
Instant – scan each person in under 3 seconds – no calibration needed.
Accurate – 32 averaged facial multi-points detect body temperature with an accuracy of ± 0.5ºF.
Easy to Use – simple plug and play with a slim, modern design.
Contactless – touch-less to the user and does not require any participation from an employee.
Mask Detection – unobtrusively way scan employees and patrons. Deny access if no mask detected.
Facial Recognition – can deny access to strangers and unauthorized people. Time-stamp employee entrance.
Comfortable – avoids unpleasant security guard interaction with handheld devices.
Push Notifications – via email or SMS.
The unit can be managed over the LAN remotely by a Central Management Server (CMS) Application installed on a PC. The CMS has powerful capabilities including time-stamping employees, managing multiple devices, registering users and provisioning each device with specific organizational and user information. Security and temperature alerts from the devices can be displayed on the event management console for security personnel to take action. The data can be stored on a local networked computer, with all data kept internal for security reasons.
The PF08H1 Thermal Guard Temperature Screening System with its 40” floor-mount stand suits front entrances and lobbies, airports, stores, factories, warehouses, shopping malls, restaurants, schools, government, offices, and anywhere people are entering and exiting. Thermal imaging technology can protect both work environments and staff – the most valuable business assets. As businesses start to reopen and return to normal, this is the ideal technology to have in place.
The PF08H1 Thermal Guard Temperature Screening System is available now from technical distributor Saelig Company, Inc.
The MAX77958 is a robust solution for USB Type-C® CC detection and power delivery (PD) protocol implementation
The MAX77958 is a robust solution for USB Type-C® CC detection and power delivery (PD) protocol implementation. It detects connected accessories or devices by using Type-C CC detection and USB PD messaging. The IC protects against overvoltage and overcurrent, and detects moisture and prevents corrosion on the USB Type-C connector. The IC also has a D+/D- USB switch and BC 1.2 detection to support legacy USB standards. It contains VCONN switches for USB PD and an enable pin for an external VCONN boost or buck converter.
Key features
Customizable Firmware
USB Type-C Support and USB-PD Support
Supports BC 1.2 Legacy/Proprietary Charger Detection
High Voltage VBUS (28 V)
Additional features
Customizable Firmware
USB Compliant Default Embedded Firmware
Supports Customizable Actions on Events
Firmware Updates for Future Specification Revisions
USB Type-C Support and USB-PD Support
USB Type-C Version 1.3 and PD 3.0 Compliant
Mode Configuration: Sink/Source/Dual Role Port
Programmable Power Supply (PPS) Sink Support
Fast Role Swap (FRS) Initial Sink Support
Cable Orientation and Power Role Detection
Integrated VCONN Switch with OCP
Support Try.Snk State
Audio and Debug Accessory Sink/Source Mode
Supports BC 1.2 Legacy/Proprietary Charger Detection
Integrated D+/D- Switches
Moisture Detection/Corrosion Prevention
High Voltage VBUS (28 V)
Short to VBUS Protection on CC Pins (22 V)
Dead Battery Support
Dual Supply Inputs from SYS and VBUS
I2C Programmable Configuration
I2C Master to Control External Charger or Direct Charge IC
Texas Instruments launches new low-dropout (LDO) linear regulator. The TLV740P is a low quiescent current LDO with excellent line and load transient performance designed for power-sensitive applications. This device provides a typical accuracy of 1%.
The TLV740P also provides inrush current control during device power up and enabling. The TLV740P limits the input current to the defined current limit to avoid large currents from flowing from the input power source. This functionality is especially important in battery-operated devices.
The TLV740P is available in standard DQN and DBV packages. The TLV740P also provides an active pulldown circuit to quickly discharge output loads.
TAIYO YUDEN’s modules feature an onboard antenna and filter to reduce the components required for wireless designs
TAIYO YUDEN’s 802.11bgn Cortex-M4F Wi-Fi modules feature an onboard antenna and filter to reduce the number of supported components to be integrated into wireless designs. Based on the NXP 88MW320, embedded Arm® Cortex-M4F processor can help drive applications. FCC, ISED, and Japan pre-certified, optional embedded TAIYO YUDEN software can help simplify designs.
Features
IEEE802.11b/g/n module with onboard trace antenna and band pass filter
NXP 88MW320 SOC with embedded Arm Cortex-M4F processor
FCC, ISED, and Japan pre-certified
Optional integrated WLAN driver, OS, and protocol stack
Biometric payment cards with integrated fingerprint sensor make contactless payments more convenient, more secure and hygienic. The contactless card remains in the hands of the cardholder throughout the entire payment transaction, while eliminating the need for PIN entries or signatures to authorize even high-value payments. Infineon Technologies AG and Fingerprint Cards AB have joined forces to enable mass deployment of this emerging solution.
The world leaders for security controller in contactless payment and for fingerprint sensors incl. their related software aim to provide card makers with biometric semiconductor solutions which make integration particularly cost-efficient and scalable. The fingerprint information is stored on the card’s embedded secure element and not shared with any third party, thus protecting the user’s credentials.
“Authorizing payments without handing over the card is a huge step forward in terms of user experience, data security and hygiene. We selected Fingerprints as they are the leading biometric silicon and technology provider with market proven performance. Jointly, we want to drive the industrialization of biometric payment cards from a niche into mass market rollout,” said Bjoern Scharfen, Head of the Payment and Transport Ticketing product line at Infineon. “Combining Fingerprints’ leading biometric technology with our expertise in chip security, energy efficiency and contactless performance, we will develop a system solution that is easy to integrate and gives our customers a head start in an emerging growth market.”
“Collaboration is key in the payment ecosystem, in which Infineon is a leading player. Together we will produce an optimized solution that will make it easier for card manufacturers to integrate biometrics into future generations of contactless payment cards, ultimately putting these cards into the hands of consumers around the world to enable a worry-free payment experience,” says Michel Roig, SVP Business Line Payments & Access at Fingerprints.
Fingerprints’ sensor modules, combined with Infineon’s 40 nm high-performance and energy-efficient security controllers based on the 32-bit ARM® SC300™ SecurCore®, fully support the requirements of biometric payment cards. They enable:
Secured matching of the fingerprint image within the security controller where the private data is securely stored
Excellent contactless performance despite the increased power required
Convenient and reliable enrollment of sensitive biometric data in the card
Almost every second payment card with a chip worldwide has an Infineon security controller at its core. Infineon also supplied chip solutions for major biometric card projects and pilots in 2020. For further information about Infineon’s payment security controllers, please go to www.infineon.com/payments
The good life, they say, sometimes does not cost a fortune, with the new RD6006 from Ruideng, you can precisely program the amount of power needed for your project via USB / WiFi communication or via the embedded control panel.
The RD6006 digital control Switching Adjustable power supply is a programmable, DIY Flavoured, bench PSU that is safe, convenient to use, and comes preloaded with different features for high-level performance. We were lucky enough to get our hands on one of the units from Banggood.com, so we share our experience with you. RD6006 has two versions: RD6006 and RD6006-W, RD6006-W have WIFI board, RD6006 doesn’t. First, let’s take a look at some of its impressive features as highlighted below.
Some highlight features of the PSU include:
2.4-inch color LCD display
Digital Keypad + Encoder Potentiometer combination adjustment
Back display that includes a WiFi communication board and a Clock Battery Socket
USB interface
Special interface for charging a battery
PC software and Phone Apps
Firmware upgrade Support
A power button that indicates with a blinking green light when the RD6006 is connected to the power source.
Temperature range: -10 0C to 40 0C
To show the technical performance, the specifications are presented below:
What makes the RD6006 Special
1. Full Main Page Display
The main page of the RD6006 digital power control switch displays more information than previous power supply models. The main page is set by default to a traditional display style which shows the voltage, current, and power values in large fonts, but users also get the option of switching to the view of different modes like the Curve style mode which shows the voltage, current, and power ratings as curves on one page. However, operations in the curve display mode are the same as in the traditional display. You can start, pause, and achieve ordinate scaling of the curve using the digital encoder.
2. PC Software & App Connection
The RD6006 digital power supply also allows you to remotely monitor and set the digital power parameters from your computer or mobile phone. Use a micro USB cable to connect the RD6006 to your PC and set basic functions, like firmware upgrade, version update, logo upgrade, and language settings.
RS6006 PC Software Interface
The RD6006 can also be monitored and controlled over WiFi using a smartphone. To install the app on an Android/iOS based smartphone, enter RdPower in the search bar on Google playstore for Android or App Store for iOS, and allow for necessary permissions. Once the app is installed, follow the steps below to connect it to the RD6006:
Call out the sidebar to select your preferred language option.
Set the communication interface to WiFi and restart the RD6006 to apply the changes.
For the app to work, It needs to be on the same network as the RD6006. Implement this, then call out the sidebar again and choose “Network Distribution”. This brings out the mobile IP address and demands that a password is given.
After confirmation, the main page opens up to the RD6006 and the voltage and current output can be set using the U-SET and I-SET buttons. Language preference can also be selected from the sidebar.
During this setup, the RD6006 might malfunction due to wrong settings, restart the RD6006 to set it back to default factory settings.
3. All-round Load protection
The RD6006 comes with several features that help protect the devices connected to it. The device allows users to set the desired output voltage and protection values, such that, once the output voltage exceeds the protection value, supply to the output is automatically shut down to prevent damage to the load. Being able to set voltage and current boundary values helps to protect the load in all use cases.
Resources
You can find the original manual, drivers, and software to Google Drive.
Assembly
To build a complete power supply for your bench you need to purchase the main RD6006 unit, the S06A case, and a solid 60V/6Aswitching power supply which will be the input source to RD6006. All these are available from Banggood.com for reasonable pricing with a total estimated cost of $136. The case has 310 x 172 x 86mm dimensions which are compact enough for the power output of the final product. As you can see in the photo below, it comes with all necessary accessories such as cables, FAN, power socket, mains switch, FAN control board etc.
Where each of these components is placed is straight forward and you don’t even need a manual to know where to place them. The power socket, power switch and the FAN are placed on the back of the case and secured with the included screws.
The FAN control unit is placed on the side of the case as seen in the photo below and it will be connected to the Switching Power Supply 60V output and the fan itself. This small board controls the FAN when the temperature inside the box reaches a predetermined value.
Then it’s time to place the RD6006 unit in the front part of the case. This is done by simply sliding in with minimal force. The unit fits perfectly and clicks on its place nicely.
Next, we place the switching power supply unit in the middle of the case and secure it with four screws on the bottom. We are now ready to make the cable connections.
The mains connections go through the power switch to the input of the switching power supply. Then the power for the FAN control board goes to +/-60V output and also another pair of cables from the same output go to the input of RD6006.
The overall look of the assembled power supply will look like the photo below.
Assembly Video and Final Product
First Power ON and Maximum output Voltage
Output Voltage Ripple
We tested the power supply with an oscilloscope at 3 standard outputs:
5V/5A
12V/5A
24V/5A
You can see the voltage ripple at the output is ~ 420-490mVpp, which is high for some sensitive circuits, so you should take care when powering those. This is due to the nature of the switching power source we have used.
Output 5V @ 5A, the ripple is 450mVppOutput 12V @ 5A, the ripple is 420mVppOutput 24V @ 5A, the ripple is 490mVpp
Buy from Banggood
The RD6006 digital control power supply currently sells onBanggood at $57.00 and it comes in two versions as we said above: the RD6006 and the RD6006-W. The RD6006-W has the WiFi board for connection to the APP and software while the RD6006 does not.
Users already seem satisfied with the RD6006, describing it as an amazing product that does so much better than any digital power supply control switch they have ever used. Some of the feedback so far include;
“These are great devices. I have used two to breathe new life into two HP lab power supplies. The battery feature is also very useful”.
“Very nice product, I am still playing with it but it seems very solid and accurate. It requires an external bulk power supply and adds the regulation and digital readouts for voltage current. Programmable and when you set it for 5V out, you actually get 5.00V out! Very nice. I will probably order more for my electronics test shop.”
More details on the RD6006, including sales, shipping, and reviews by other users can be found here.
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