The Kynix Blog - Sensor

Bosch Connected Devices and Solutions showcases three innovative sensor-based solutions in Las Vegas, USA. The devices help improve comfort, convenience and accountability, and new extension boards simplify the development of Internet of Things (IoT) applications.“Sensor-based connected devices and solutions lie at the heart of many applications today, including connected mobility, Industry 4.0 and logistics – and we offer some of the most innovative products in these dynamic sectors”.Increasing car driver safetyIn the event of an accident, a vehicle equipped with an eCall system will automatically contact emergency services. The Bosch Retrofit eCall plug is a smart device that uses acceleration sensors and intelligent embedded algorithms to detect an accident. Upon detection, it transmits data to a back-end IT system (via a Bluetooth smartphone app) to provide immediate assistance, e.g. it enables a call centre to call the driver, or immediately contact the emergency services if necessary.At CES, Bosch announces that Retrofit eCall can now be extended to Usage-Based Insurance and Concierge Services. At the push of a button, the Concierge Service connects drivers to a designated personal assistant at a service centre. This personal assistant can then provide the driver with specific directions or alternative routes, and can even book hotels and restaurants.Ensuring supply chain accountability The Transport Data Logger (TDL) ensures transparency across the entire supply chain. The TDL is a sensor-based device that can be attached to a shipment of sensitive or high-value goods. By monitoring and recording relevant parameters such as temperature, humidity, tilt, and shocks, the TDL makes the delivery process transparent and traceable.These measurements are subsequently documented and visualised via an app. If any parameter exceeds a user defined threshold, this is recorded, providing traceability and accountability. If no thresholds are exceeded, the TDL provides evidence of an incident-free transport chain.Extension boards for the cross domain development kitThe ability to quickly produce a demo or proof of concept is a key time saving factor when developing IoT projects. Bosch’s Cross Domain Development Kit (XDK) is a rapid prototyping tool that enables developers to bring their IoT designs to life, accelerating and simplifying the transition from prototype to mass production.At CES, Bosch Connected Devices and Solutions is also presenting three new extension boards expanding the feature set of the XDK. The first is the LoRaWAN connectivity extension board, which provides long-range network connectivity of up to 40km. The second is an infrared sensor extension board enabling the detection of heat signatures, for applications such as motion detection and temperature measurement. The last is an extension board for an additional temperature sensor providing an extended temperature measurement range, which is suited for industrial applications.The XDK is a fully integrated hardware and software product with Bluetooth and WiFi connectivity, containing a MEMS accelerometer, magnetometer and gyroscope, coupled with humidity, pressure, temperature, acoustic and digital light sensors. The software development environment offers access to various API layers, together with an algorithm library and sample applications, as well as access to the online development community.Reference:LM75AD"PCT2075DP"OH10/62

Designed for precision angle measurement, Contelec’s Vert-X 48E series non-contacting magnetic encoder is aimed at applications in agriculture, mining or construction equipment, and other applications where extreme environmental conditions exist and accurate control is required for steering, guiding or positioning etc.Available with full product and application engineering support from Variohm EuroSensor, the new sensor is a two-part design with no mechanical bearing or joint between the magnet and sensor components.The 48mm diameter and 17mm high sensor housing is fully sealed to IP68/IP69K and a choice of magnet designs allows maximum installation flexibility. The Vert-X 48E has resolution options of 12- or 14-bits with a choice of single and redundant output types for 0..10 V, and 4…20mA as well as single and redundant CANopen versions. The supply voltage of 8…35VDC will suit various position feedback tasks.With simple installation between rotating and stationary components in steering, drive chain, guide or other transmission mechanics, the sensor works with an air-gap of up to 13mm depending on the sensor type and an optional ‘detection of magnetic loss’ feature will signal a system shut-down in case of the magnetic actuator moving out of a valid air-gap range.The axial alignment allows up to 13mm between the sensor and magnet rotation axes as well as a good tolerance of tilting and radial misalignment. These factors combine with outstanding resilience to humidity, damp and dust as well as EN 60068-2-6 shock and EN 60068-2-27 vibration rated mechanical specifications, for exceptional levels of reliability and endurance.Other options for the range include selectable electrical angle in ten degree steps up to 360 degrees, settable mid-point, start and end point and gradient. One metre cable connection is standard with customised lengths and special connector options available on request. Reference:350-00029ALS-PT17-51C/L177/TR8EE-TP405-X  

In order to help social-fitness fans stay motivated, STMicroelectronics has introduced smart motion sensors that enable always-on tracking applications to run for longer and record progress more accurately. These sensors, the LIS2DS12 3-axis 'pico' accelerometer, LSM6DSL/M 6-axis inertial module, and the LSM303AH eCompass help track movement continuously with minimal impact on device battery life by performing various motion-related calculations efficiently on-chip instead of using the main system processor. Pre-embedded algorithms that include high-precision pedometer, step detection, step counting, and significant motion and tilt detection effectively reduce engineering effort and accelerate time to market for imaginative new apps on devices such as fitness bands, medical monitors, personal navigation and Internet of Things (IoT) nodes, in addition to smartphones and wearable devices.ST’s smart motion sensors are already integrated in several smartphones to enable WeRun, a new feature of the WeChat messaging app used by more than 90% of people in China’s largest cities. “WeRun turns physical activity into a social pursuit, helping smartphone and wearable device users stay healthy,” commented Andrea Onetti, Group Vice President and General Manager, MEMS Sensors Division, STMicroelectronics. “ST’s smart motion sensors enable WeRun to track movements continuously, never missing a step, while preserving battery energy to power the device for longer. This enhances usability and helps attract more subscribers.”ST’s sensor device with the on-board pedometer suiting the WeRun app, the LSM303AH eCompass combines an accelerometer with a magnetic sensor that more than doubles the heading accuracy of other eCompass or pure magnetometer solutions tested at the same geographical latitudes. Combined with the continuous accurate step monitoring, this ensures precise location awareness by dead reckoning where there is no GPS signal, such as in offices, car parks, or shopping malls. In addition, ST has engineered advanced software that simplifies user calibration of the temperature drift and the magnetic sensor.ST’s smart sensors also implement selectable power modes and resolution that help optimise energy efficiency and performance. Additional features that simplify system design include an embedded FIFO, built-in self-test, integrated temperature sensor, and programmable interrupts for conditions such as freefall. The LIS2DS12, LSM6DSL/M, and LSM303AH smart sensors are in production now. 

Clinical breast examinations can save women's lives, but, as doctors-in-training, new residents sometimes aren't thorough or experienced enough to detect potentially cancerous abnormalities.Now, future physicians could learn to give high-quality breast exams with help from high-tech sensors developed by University of Wisconsin-Madison engineers."This whole project is about facilitating the training of residents," says Hongrui Jiang, Lynn H. Matthias Professor in Engineering and Vilas Distinguished Achievement Professor in electrical and computer engineering.The project is working toward creating small fingertip sensors that can measure the pressure and hand motions used by physicians when probing for lumps. New residents will be able to compare their own exams against standards established from experienced doctors, and obtain feedback on whether or not they are being sufficiently thorough.Experienced clinicians long have been looking for an effective tool to establish standards for high-quality breast exams. Dr. Carla Pugh, the Susan Behrens, MD Professor of Surgical Education and a professor of industrial and systems engineering at UW-Madison, has attempted for years to create such a device, but the available sensing technology simply couldn't capture all of the subtle motions necessary for performing a comprehensive breast examination."They were using commercial products—but the sensors were not very good," says Jiang. "Commercial sensors have serious limitations."While some of the existing devices could quantify direct pressure reasonably well, nothing existed that could also measure the side-to-side and circular motion that real-world clinical procedures entail. So Pugh approached Jiang for help."It was very hard; we couldn't figure out a nice way to handle the problem until a year ago, when we had an 'aha' moment," says Jiang.Jiang and his student, Jayer Fernandez, realized that one traditional capacitive sensor alone couldn't possibly measure all of the necessary parameters. Instead, they fashioned a device that integrates information from four overlapping components to quantify pressure and shear from all three dimensions.That novel approach earned Fernandez top honors at the Institute of Electrical and Electronics Engineers' prestigious Sensors Conference in fall 2016. Fernandez gave a brief, informal presentation to a panel of experts, who were impressed by the capabilities of the device."I've never done an elevator pitch before, but it went well. People asked me a lot of interesting questions. I described why our sensor is more sensitive to the force range that we're looking at and gives us a nice way to do the readout in different directions," says Fernandez.Currently the researchers are working to further miniaturize the sensor, and to combine data from multiple devices at once. They will continue to collaborate with Pugh and other clinicians to develop the most useful device for working doctors."There's a real need to improve physician training," says Jiang. "We didn't realize there was such a clinical need. It's a very challenging problem, but very interesting and very significant." Reference:OVM7695-RAEAOV09726-A40A-1DOV05633 

Microfluidic platforms have revolutionized medical diagnostics in recent years. Instead of sending blood or urine samples off to a laboratory for analysis, doctors can test a single drop of a patient's blood or urine for various diseases at point-of-care without the need for expensive instruments. Before the sample can be tested however, doctors need to insert specific disease-detecting biomolecules into the microfluidic platform. While doing so, it has to be ensured that these biomolecules are well-bound to the inside of the device to protect them from being flushed out by the incoming sample. As this preparatory step can be time-consuming, it would be advantageous if microfluidic platforms could come pre-prepared with specific biomolecules sealed inside. However, this sealing process requires exposure of the device components to high energy or 'ionized' gas and whether biomolecules can survive this harsh process is unknown.To answer this question, researchers at the Okinawa Institute of Science and Technology Graduate University (OIST) have created a novel sensor that detects biomolecules more accurately than ever before. This sensor was used to demonstrate that biomolecules can be successfully sealed within microfluidic devices. The results have profound implications for healthcare diagnostics and open up opportunities for producing pre-packaged microfluidic platform blood or urine testing devices.Traditionally, metal oxide semiconductor (MOS) sensors are used to detect the binding of biomolecules to a surface by measuring changes in charge. Comprised of a silicon semiconductor layer, a glass insulator layer and a gold metal layer, these sensors are incorporated in an electric circuit with the biomolecule sitting in an electrolyte-filled plastic well on top of the sensor. If you then apply a voltage and measure current, you can work out the charge from the capacitance reading given off. Biomolecules with different charges will give you different capacitance readings, enabling you to quantify the presence of biomolecules.The novel sensor created by researchers in OIST's Micro/Bio/Nanofluidics Unit, measures charge using the same technique as conventional sensors but has the additional function of measuring mass. Instead of having a solid gold metal layer, the so-called nano-metal-insulator semiconductor (nMIS) sensor has a layer of tiny gold metal islands. If you shine light on these nanostructures, the surface electrons start oscillating at a specific frequency. When biomolecules are added to these nanoislands, the frequency of these oscillations change proportional to the mass of the biomolecule. Based on this change, you can use this technique to measure the mass of the biomolecule, and confirm whether it survives exposure to ionized gas during encapsulation within the microfluidic platform."We made a simple sensor that can answer very complex surface chemistry questions," says Dr. Nikhil Bhalla who worked on the creation of the nMIS sensor.Measuring two fundamental properties of surface chemical reactions on the same device means that researchers can be far more confident that biomolecules have been successfully encapsulated within the microfluidic platform. A measurement of charge or mass alone could be misleading, making it look like biomolecules have bound to a surface when in fact they have not. Having more than one technique in the same device means that you can switch from one mode to the other to see if you have the same result."Scientists have to validate one reaction with multiple techniques to confirm that an observation is authentic. If you've got a sensor that enables the detection of two parameters on a single platform, then it is really beneficial for the sensing community," says Dr. Bhalla."By combining these two simple measurement techniques into one compact platform, it opens doors to create portable and reliable sensing technologies in the future", adds PhD student Shivani Sathish.In a proof-of-concept experiment, by combining information about both the mass and charge of the biomolecule, the scientists were able to show that a common biomolecule survives exposure to ionized gas at a specific energy level. A single reading of charge alone gives a misleading result, but looking at the complementary parameters together allows for more accurate biomolecule detection.This novel nMIS sensor could be used to create microfluidic platforms that test for various diseases. By measuring charge and mass using the nMIS sensor, researchers can ensure that disease-detecting biomolecules are successfully sealed and functional inside the testing device."It would be like a pre-packaged pregnancy test," says Professor Amy Shen, head of OIST's Micro/Bio/Nanofluidics Unit. "If there is already something adsorbed then all you have to do is introduce whatever sample you are using, such as urine or blood." Reference:ADXRS620BBGZLPY410ALTRADXRS649BBGZ

Companies have developed the industry’s first intelligent always-on visual sensor specifically designed to overcome the power and cost constraints of vision processing for IoT applications. The companies will showcase the WiseEye IoT sensor at the upcoming Consumer Electronics Show (CES) 2017, January 5-8, 2017 in Las Vegas.The WiseEye IoT sensor solution is purpose-built from the ground up with always-on, low power visual sensing in mind. By integrating Himax’ unique low power CMOS Imager Sensor, CEVA’s low power vision DSP technology and emza’s unique machine vision algorithms, the result is a powerful solution capable of detecting, tracking and recognising its environment in an extremely efficient manner using a few milliwatts of power.This disruptive sensor allows low-cost IoT systems to employ advanced always-on intelligence which can, among other things, detect, track and identify objects, people and animals. This intelligence is applied locally on the device, passing only relevant information up to the network.This is fundamental to reducing the bandwidth and cost of deploying visual sensing networks. Target applications include virtual assistants, wearable devices, connected home sensors, residential security, protection of elderly, automotive, smart buildings systems and smart city infrastructure.“Our image sensors have long been among the leanest in the industry in terms of power consumption. We have leveraged our vast expertise to develop an ultra-low power sensor specifically for IoT,” said Amit Mittra, CTO of Himax Imaging.“Our collaboration with CEVA and emza tightly integrates our sensor with the best-in-class processor and machine vision that allows us deliver a truly unique always-on, contextually aware sensor solution that is affordable for almost every application.”“Machine vision based sensors enhance the intelligence and functionality of any device, and our WiseEye IoT solution aims at bringing these capabilities to the vast and largely untapped IoT space,” said Yoram Zylberberg, CEO of emza Visual Sense. “In Himax and CEVA we have two of the leading experts in sensors and vision processing, and the ideal partners to realise the industry’s first always-on intelligent visual sensor.”“Low power intelligent vision processing is a key component of our strategy to enable a smarter, connected world, and we’re excited to work with emza and Himax to introduce a unique and revolutionary solution for always-on intelligent visual sensing,” said Ilan Yona, vice president and general manager of the Vision Business Unit at CEVA.“A purpose-built solution such as the WiseEye IoT will help to truly realise the potential of machine vision in IoT by delivering the performance and battery life at a price point that supports mass deployment.”Reference:OVM7695-RAEAOV09726-A40A-1DMT9V011P11STC:B