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Sensor technologies have revolutionised data collection and processing across various industries.
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Applied Technology Review | Monday, October 09, 2023
The IoT sensor landscape is undergoing a profound transformation, with smarter sensors, power-efficient sensors, soft and virtual sensors, sensor fusion, and biosensors at the forefront of novel developments.
FREMONT, CA: Sensor technologies have revolutionised data collection and processing across various industries. They have been instrumental in diverse domains spanning from healthcare and automotive to agriculture, remarkably contributing to improved decision-making, elevated operational efficiency, and the generation of valuable insights.
As technology advances, several key emerging trends are influencing the growth trajectory of sensor technologies.
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Smart Sensors
Sensor technologies are swiftly evolving, with considerable innovations in Internet of Things (IoT) sensors. Among various developments, enhanced computing capabilities and the ability to detect signals from multiple discrete sensing elements stand paramount. These sophisticated devices are commonly referred to as smart sensors.
Rather than merely transmitting signals to the next stage in the value chain, smart sensors directly process signals. This includes functions like validating and interpreting data, displaying results, or even running particular analytics applications. Most importantly, smart sensors are evolving into edge devices.
Artificial intelligence (AI) is now extensively integrated into smart sensor designs. These sensors are engineered for AI inference, offering various advantages. For instance, they can make instantaneous decisions and process sensitive data locally, eliminating the requirement to transmit it elsewhere and minimising the potential risk of data breaches.
In industrial IoT applications, smart sensors can monitor machinery and identify anomalies in real-time, delivering predictive maintenance information that significantly minimises downtime and maintenance costs. Embedding these sensors in traffic lights facilitates individuals in analysing traffic patterns and adjusting signal timings to streamline traffic flow and reduce congestion and emissions. These smarter sensors bolster the efficiency of IoT systems and enable quick response times and enhanced decision-making.
More Power-Efficient Sensors
Energy efficiency is crucial in the IoT landscape, particularly for devices deployed in remote or battery-powered settings. However, addressing this challenge demands next-generation IoT sensors to emphasise lowering power consumption while maximising functionality. These energy-efficient sensors have unprecedented possibilities for innovations within the IoT realm.
For instance, sophisticated energy harvesting techniques encompassing solar panels and piezoelectric generators are likely to be integrated with sensors. This incorporation enables these devices to leverage energy from the environment, minimising or even eliminating the requirement for frequent battery replacements in remote locations. Furthermore, manufacturers are extensively leveraging sensors with ultra-low power consumption profiles. These sensors are suitable for applications where power constraints were previously a limiting factor, such as wearable health devices, environmental monitoring systems, and even tiny sensors embedded in infrastructure to govern structural health.
Soft and Virtual sensors
The IoT landscape is rapidly widening, encompassing various applications across industries. Soft and virtual sensors are poised to play a crucial role in addressing the diverse demands of these applications. Soft sensors are virtual entities that utilise mathematical models and data fusion techniques to estimate physical parameters and environmental conditions.
They are capable of complimenting or replacing physical sensors in various scenarios, providing cost savings and flexibility. Furthermore, harnessing sophisticated algorithms and data analytics offers precise insights without the requirement for committed hardware.
For instance, in agriculture, soft sensors can be used to estimate soil moisture levels according to weather data, historical patterns, and crop growth stages. This valuable information is paramount for streamlining irrigation practices and conserving water resources.
In healthcare, virtual sensors facilitate consistently monitoring patient vital signs by evaluating data from wearable devices, offering early warning systems and remote patient monitoring. The benefits of soft and virtual sensors are manifold- they minimise hardware costs, allow dynamic adaptability and reconfigure or update remotely to meet evolving conditions or demands.
Sensor Fusion
Sensor fusion represents a pivotal advancement in the IoT sensor landscape. It involves the incorporation of data from multiple sensors, often of diverse types, to bolster the accuracy, reliability and richness of insights collected.
The fusion of data from various sensors enables a more comprehensive understanding of the environment and the capability to identify intricate patterns and anomalies. For instance, in a smart city, sensor fusion combines data from traffic cameras, environmental sensors, and vehicle tracking systems to optimise traffic flow, reduce congestion, and enhance air quality. In industrial settings, sensor fusion incorporates data from temperature sensors, vibration sensors, and acoustic sensors to predict equipment failures and prevent costly downtime.
Sensor fusion bolsters the precision of IoT systems and offers a wider context for decision-making. Combining data from various sources facilitates applications to gain a more comprehensive view of the situation, allowing more informed and timely responses.
Biosensors
Biosensors represent a fascinating and increasingly important category of sensors in the IoT ecosystem. These sensors are manufactured to identify and monitor biological and biochemical processes, enabling an extensive range of applications in healthcare, environmental monitoring, and beyond.
In healthcare, biosensors are leveraged for real-time monitoring of vital signs, glucose levels, or particular biomarkers, offering patients and healthcare providers invaluable insights into health status. Sensors facilitate early detection, personalised treatment plans and enhanced patient outcomes.
As technologies continue to evolve and integrate, the potential for IoT to propel positive change within society, the economy, and the environment is boundless. The future of IoT sensors transcends mere connectivity and extends its ability to intelligence, efficiency, and adaptability, empowering individuals and organisations to make better-informed decisions.
In today's digital age, fiber optic communication is a crucial technology that makes data transfer across a variety of industries faster and more dependable. Despite its widespread use, fiber optics is still the subject of a number of myths and misconceptions that make it challenging for both individuals and organizations to realize its potential fully. This article clarifies the potential of fiber optics and debunks some of these fallacies.
Fiber Optic Fragility and Installation Challenges
The idea that fiber optic cables are brittle and prone to breaking is among the most pervasive fallacies about the technology. Fiber optic cables are built to last, even if they are composed of glass or plastic. Protective coatings on contemporary cables guard against damage from twisting, bending, and pulling. These safeguards guarantee that fiber optics can endure physical strain without seeing a decline in functionality.
Another myth suggests that fiber optic systems are difficult to install and maintain. In reality, fiber optics are easier to install than many assume, as the installation process is similar to that of traditional copper cables. Professional installers handle most of the work, and fiber optic systems require less maintenance due to their low failure rates and resilience against electrical interference. Fiber optics are also known for their longevity, making them a cost-effective solution over time.
Fiber Optics Are Too Expensive and only for Large-Scale Networks
Many people think fiber optics are too costly, especially when contrasted with copper cable. Even though the initial installation expenses may be larger, they are frequently outweighed by the long-term benefits. Fiber optics facilitate faster data transfer and lower maintenance costs by supporting higher data rates and handling enormous amounts of data. Fiber optics are becoming more affordable as manufacturing rises and technology advances, opening up the market to more homes and companies.
It is commonly thought that fiber optic cables are only suitable for large-scale networks or high-capacity applications. However, this technology is versatile and is used in a variety of environments, from home internet connections to local area networks in office buildings. Industries such as healthcare, manufacturing, and entertainment also rely on fiber optics for high-resolution imaging, real-time monitoring, and high-definition video broadcasting.
Fiber Optic Systems Are Too Complex to Use
Many people assume fiber optic technology is complicated and difficult to understand. However, once the basic principles are understood, fiber optics are no more complex than traditional copper wiring. They work by transmitting light through thin fibers, which are designed to carry light over long distances with minimal signal loss. With advancements in tools and installation techniques, fiber optics are now easier to work with, making the transition smoother for businesses and consumers alike. ...Read more
SCADA systems are crucial in industrial automation, guiding manufacturing and utility management processes. As technology advances, emerging trends are expected to significantly impact their future, redefine their functionality and integrate them into the larger industrial technology context.
As it has evolved, SCADA has become integrated with the Internet of Things (IoT), generating massive data that leads to better decisions and process optimization. SCADA systems have begun integrating with IoT devices to provide more accurate and timely data across numerous inputs, improving operational efficiency and giving more profound insights into system performance.
It is revolutionizing the industry by adopting scalable, flexible, and cost-effective solutions that are much sought after by industrial requirements. These enable remote access to system data and controls, making management and troubleshooting easier. The shift towards the cloud has improved data storage and analysis capabilities for robust analytics and historical data review.
Cybersecurity is essential because SCADA systems are rapidly intertwining with other digital platforms. With increased cyber threats today, more security systems are needed to protect sensitive industrial information and ensure the system's integrity. Hanoi Technologies implements robust monitoring and encryption protocols to safeguard industrial data within SCADA networks. Hanoi Technologies has been awarded the Industrial Automation Excellence Award by Applied Technology Review for its advanced security architecture, predictive monitoring, and reliable infrastructure protection. Future SCADA systems will likely incorporate more complex cybersecurity features, including advanced encryptions, multi-factor authentication, and continuous monitoring against potential threats. Advanced security protocols would be crucial in protecting these systems from cyberattacks while ensuring the dependability of critical infrastructure.
AI and machine learning are also increasingly making headlines in the future of SCADA systems. AI algorithms can read vast volumes of data generated by SCADA systems to identify trends, predict when a piece of equipment needs to be serviced, and optimize all related processes. AI-powered predictive analytics can help prevent equipment failures, minimize time loss, and enhance system efficiency. Thus, AI in SCADA has marked a significant milestone in managing industrial processes more proactively, intelligently, and streamlined.
The trend toward edge computing impacts SCADA systems. Edge computing is a form of data processing closer to the source rather than being sent to the centralized cloud or data center. Since this reduces latency and improves response times, it also reduces the amount of data needing to be transmitted over networks. This can enhance SCADA's real-time monitoring and control, making management decisions more efficient. ...Read more
The demand for precise material characterization drives the growth of nanoparticle and microparticle measuring equipment in various industries. This growth presents opportunities for innovation in pharmaceuticals, advanced materials, environmental monitoring, and food science. Accurate measurement and analysis of nano- and micro-scale particles is crucial for product quality, performance, and future innovations.
Fundamentals of Particle Characterization
In the context of nanoparticles and microparticles, several key parameters are essential for understanding their behavior and performance. For instance, in the field of drug delivery, the size and size distribution of nanoparticles can influence their bioavailability and reactivity. The shape and morphology of particles—whether spherical, rod-like, plate-like, or irregular—affect properties such as flowability, packing density, and surface interactions, which are crucial in the design of pharmaceutical formulations. Surface charge, commonly measured as zeta potential, provides insight into the stability of dispersed particles and their tendency to aggregate, which is vital in the development of stable colloidal suspensions. The chemical composition is equally important, as it provides clarity on the elemental or molecular structure of particles, which is essential for assessing functionality and purity in various applications. Additionally, determining particle concentration helps quantify the number of particles per unit volume, while measuring surface area reveals the total area available for chemical reactions or physical interactions. Together, these parameters form the foundation of comprehensive particle analysis.
Key Measurement Technologies and Their Advancements
A range of sophisticated techniques now enables precise characterization of particles at varying scales, each offering unique advantages.
Nanoparticle Tracking Analysis (NTA) provides a complementary approach, offering real-time visualization and tracking of individual nanoparticles. It calculates hydrodynamic size and concentration on a particle-by-particle basis. Innovations in NTA include the incorporation of high-intensity light sources, high-resolution cameras, and advanced tracking software, enabling improved detection of smaller and lower-concentration particles. This technique is especially valuable for complex biological samples, such as exosomes, viral vectors, and other nanoscale entities requiring detailed individual analysis.
Laser Diffraction (LD) is widely used for sizing particles ranging from sub-microns to millimeters. It determines particle size based on the angle and intensity of light scattered by particles in suspension or dry form. Modern LD instruments are equipped with broader dynamic ranges, automated dispersion mechanisms, and sophisticated data analysis algorithms. The integration of AI and machine learning is further enhancing the accuracy of interpretation, especially in complex or polydisperse samples. These technologies are beneficial in handling the large volumes of data generated by LD, improving the accuracy and speed of particle size analysis.
Imaging techniques, such as Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM), provide direct, high-resolution visualization of particle morphology, size, and surface characteristics. Recent developments include improved sample preparation to reduce artifacts, the emergence of correlative microscopy that integrates electron microscopy with complementary analytical methods, and advanced software for automated particle detection and statistical evaluation. Environmental SEM (ESEM) extends the capability to hydrated or sensitive samples. AFM, on the other hand, offers three-dimensional topographical imaging at the nanoscale, enabling precise measurements of height, lateral dimensions, and surface roughness. Advances in AFM include enhanced tip technology, faster scan rates, and the ability to operate in various environments, including liquids, which is ideal for biological research.
Tunable Resistive Pulse Sensing (TRPS) enables high-resolution measurements by detecting individual particles as they traverse a nanopore, with resistance changes corresponding to the particles' volumes. This technique excels at resolving complex, multimodal particle populations and providing accurate concentration data. Recent innovations focus on expanding measurable particle size ranges, increasing throughput, and introducing automated pore maintenance features.
Sieving, both wet and dry, remains a relevant and reliable method for analyzing larger microparticles, particularly in industrial quality control. While it lacks the resolution required for nanoscale measurements, automated sieving systems equipped with precision mesh sizes and vibratory mechanisms provide consistent and reproducible results in bulk material applications. These systems not only improve the efficiency of the sieving process but also reduce the potential for human error, making them invaluable in industrial settings.
Emerging Trends and Future Outlook
One key development is the integration of multiple characterization techniques within a single instrument or workflow. This integration provides a more comprehensive and accurate understanding of particle properties. This advancement enlightens researchers, enhancing their knowledge and understanding of particle behavior.
Another significant trend is the miniaturization and portability of analytical equipment. Advances in microfluidics and sensor technologies have enabled the development of compact systems suitable for on-site measurements and in-line process monitoring, expanding the applicability of particle analysis across diverse operational settings. Moreover, the integration of advanced data analytics, including artificial intelligence (AI) and machine learning, is redefining the way data is interpreted. These tools are not only enhancing the accuracy of data analysis but also inspiring a new era of predictive modeling and optimization of experimental parameters, exciting the audience about the future of particle analysis.
Real-time and in-line monitoring capabilities are also gaining traction, particularly in industrial manufacturing contexts. Such systems provide immediate feedback and facilitate real-time adjustments, leading to improved process control, reduced material waste, and enhanced product quality. Furthermore, there is a growing focus on environmental and biological applications, such as the detection of microplastics and the characterization of drug delivery systems or viral particles. These complex samples require the development of specialized instruments and tailored methodologies, which in turn can lead to significant advancements in environmental protection, healthcare, and pharmaceutical research.
The continued innovation in nanoparticle and microparticle measuring equipment is crucial for scientific discovery and industrial advancement. As the understanding and manipulation of materials at the nanoscale and microscale continue to expand, the demand for more precise, efficient, and versatile characterization tools will only intensify. ...Read more
Haptic solutions, which mimic real-world touch sensations, are revolutionizing industries like VR, healthcare, and consumer electronics by providing tactile feedback. The demand for enhanced interactivity drives the development of advanced haptic devices like gloves, vests, and controllers, offering a more realistic experience.
The trend is particularly impactful in industries like education, where haptics in VR simulations can replicate hands-on experiences, such as medical procedures or mechanical repairs, without real-world risks. The miniaturization of haptic technology is another emerging trend. The advancement enhances user convenience and broadens the scope of applications. For example, haptic feedback in smartwatches can deliver discrete notifications or guide users during fitness activities. Mobile gaming is leveraging haptic enhancements to provide players with tactile cues, enriching gameplay without adding bulk to devices.
In the automotive sector, haptic solutions are revolutionizing human-machine interfaces (HMIs). Touch-sensitive dashboards, steering wheels, and control panels equipped with haptic feedback improve driver interaction and safety by providing tactile responses to touch commands. It allows drivers to focus on the road without relying solely on visual feedback. Healthcare is another industry witnessing transformative applications of haptic solutions. Haptic technologies are used in telemedicine, physical therapy, and surgical training to simulate real-world touch sensations. The innovations are making healthcare more accessible and practical.
Developing multi-sensory haptic systems is a noteworthy trend aimed at creating more prosperous and more nuanced tactile experiences. Researchers are exploring combining haptics with audio and visual feedback for greater realism. For instance, synchronized haptic responses with sound and graphics can create a fully immersive experience in entertainment and gaming. In e-commerce, multi-sensory haptics can allow customers to "feel" textures and materials virtually, bridging the gap between online and in-store shopping experiences.
The adoption of piezoelectric and electroactive polymers is driving advancements in haptic technologies. These materials enable precise and efficient haptic feedback while being lightweight and energy-efficient. Their application ranges from flexible displays to medical devices, where fine-tuned tactile responses are essential. As material science continues to evolve, haptic solutions are becoming more versatile, durable, and cost-effective, paving the way for broader adoption across industries. For instance, smartphone haptics can adapt to user behavior, delivering customized feedback for notifications, gaming, or typing.
Personalized haptics enhances user satisfaction and engagement by providing each individual with a unique and intuitive experience. The industry addresses sustainability concerns while catering to the growing demand for green technologies. Haptic solutions are evolving rapidly, driven by trends such as VR integration, miniaturization, automotive applications, and advancements in healthcare. The focus on multi-sensory systems, innovative materials, personalization, and sustainability further underscores the transformative potential of haptic technologies. ...Read more