Data Acquisition Knowledge Base
Data Acquisition (DAQ) - The Ultimate Guide [Updated 2025]
The complete guide to data acquisition (DAQ). Learn how DAQ systems work and what are the basic elements of modern digital data acquisition systems.
Grant Maloy Smith has been in the test and measurement industry for 40+ years, starting as a technician in 1980 and working his way up as an application engineer, where he put together hundreds of solutions for companies like NASA, Ford Motor Company, and many more. He eventually founded the North American division of Dewetron, running it for 20 years until he retired in 2016.
He has a broad range of experience with DAQ applications across the automotive, aerospace, power, and industrial sectors. Today, Grant applies his application knowledge and experience writing about data acquisition (DAQ) technology, both for clients and publications in the worlds of test and measurement and real-time controls.
In the 1990s, Grant wrote software for Ford Motor company that allowed them to remotely control all of their Graphtec DAQ systems, resulting in much greater efficiency for the carmaker. This software was rolled out to thousands of customers worldwide.
In 2000, he developed the DAQ subsystem tribo-electric testing system that was used by NASA's Kennedy Space Center to test the electrostatic effects on a variety of materials, crucial to preventing ESD (electro-static discharge) in an oxygen-rich environment. He wrote the acquisition and analysis software and hosted it on an off-the-shelf DAQ system.
Grant was one of the three inventors of the first version of DewesoftX software, winning a technology innovation award from Slovenia in 2000.
Grant created a completely integrated system for the cyclical testing of supermarket refrigerated cases for a major manufacturer in California, writing the software and integrating the precision temperature measurement hardware.
Grant invented the first PC-based battery-powered instrument that could run without external power indefinitely, using a hot-swap Lithium-Ion battery scheme. His invention of the DA-130 with its SideHand battery system was awarded Product Of The Year by NASA Tech Briefs in 2006. This technology is still in use today.
Grant started in the test and measurement industry in 1980, working as a technician for a maker of chart recorders. He became a sales and application engineer in 1983, an eastern regional sales manager in 1984, and was the company's first marketing manager in 1988. He was the director of marketing at Western Graphtec in California for five years before founding the US division of Dewetron in 1989. He was president and CEO of Dewetron, Inc. before selling the company and retiring.
In addition to his product development and application engineering activities, Grant ran the marketing departments at all of the companies mentioned above during some or all of his tenure there, creating ads, brochures, marketing materials, writing and presenting technical papers at trade shows and technical conferences, including the International Telemetering Conference, and more. He has written or been quoted in numerous industry magazines centered around test and measurement, metrology, scientific measuring instrumentation, and the test and measurement industry.
Data Acquisition Knowledge Base
The complete guide to data acquisition (DAQ). Learn how DAQ systems work and what are the basic elements of modern digital data acquisition systems.
Application Notes
You can use DewesoftX software without DAQ hardware by simulating signals through four methods: built-in signal simulation, math-based waveform creation, using your PC’s sound card, or replaying recorded data files. These modes enable users to explore DewesoftX features, configure systems, and train without requiring any physical hardware, providing full access for learning, analysis, and data visualization.
Data Acquisition Knowledge Base
NASA’s Space Shuttle program relied on extensive ground testing to validate the Shuttle's engines, structures, and avionics. Using advanced sensors and data acquisition systems, NASA conducted hot-fire, vibration, wind tunnel, and flight simulations to ensure safety and performance. Key facilities, such as Stennis, Marshall, and SAIL, enabled rigorous validation, making data the cornerstone of the Shuttle’s engineering success.
Case Studies
The article discusses DEKRA Rail's initiative to reduce train noise pollution in the Netherlands by implementing a new data acquisition system. They chose Dewesoft's SIRIUS DAQ for its compactness and high performance. The system enables real-time noise analysis and data export for further examination.
Data Acquisition Knowledge Base
A rigorous testing process ensured that the world's fastest train, the Shanghai Transrapid, would meet all required safety standards. Combined with finite element modelling, objective physical testing demonstrated the train's reliability and efficiency before it was officially opened to the public in 2003.
Data Acquisition Knowledge Base
Hybrid electric powertrains are popular due to reducing tailpipe emissions. This article explains how combustion engines and electric motors work together.
Application Notes
This article explores the utilization of Dewesoft Data Acquisition hardware under Intrinsic Safety protocols, focusing on safe electrical operation in hazardous areas. It covers hazardous location definitions, compliance with industry standards, and the significance of Intrinsic Safety in risk reduction.
Data Acquisition Knowledge Base
The article explains the four main types of elastic moduli - Young’s Modulus, Poisson’s Ratio, Shear Modulus, and Bulk Modulus—which describe how materials deform under different stresses. It covers their formulas, real-world applications, and interrelationships, helping engineers assess material strength, stiffness, and durability in fields like aerospace, automotive, and structural engineering.
Data Acquisition Knowledge Base
Dewesoft leads the DAQ market with its intuitive DewesoftX software and high-quality, versatile hardware tailored for diverse industries. Offering advanced technologies, seamless integration, and scalable solutions, Dewesoft meets projects of any size with reliability and precision. Exceptional customer support and ongoing innovation further establish Dewesoft as the trusted choice for data acquisition worldwide.
Data Acquisition Knowledge Base
Dewesoft's Motor Analysis software module, integrated with the DewesoftX Power module, provides a robust solution for optimizing electric and hybrid motor efficiency. This tool combines electrical power and mechanical torque measurements, allowing synchronized and detailed analysis with 2D/3D efficiency mapping. Key features include Clarke and Park transformations for efficiency calculations, compatibility with various sensors and data interfaces, and high sample rate data acquisition.
Data Acquisition Knowledge Base
Strain and pressure sensors are widely used in many static and dynamic measurements. Learn the best practices and theory behind strain gauge measurement.
Data Acquisition Knowledge Base
Choosing the right data acquisition system can be a challenge. See our complete guide on choosing the right DAQ system for your measurement application.
Data Acquisition Knowledge Base
DewesoftX is a powerful yet intuitive data acquisition software used across various industries and applications. Despite offering advanced features like real-time visualization, multi-sensor support, and robust analysis tools, it’s remarkably easy to learn. Its graphical interface, seamless hardware integration, and flexible screen design let users quickly set up, record, analyze, and export data with minimal training.
Data Acquisition Knowledge Base
Introduction into CAN bus (Controller Automation Network), CAN FD, OBD II and how it compares to other standard vehicle data bus networks.
Corporate News
Dewesoft converted a simple shipping container into a functional trade show booth through collaboration, hands-on work, and creative problem-solving. Despite a tight schedule and last-minute hurdles, the team managed to pull it off. One year later, they built on the idea with an upgraded version—proof that practical innovation can grow from shared effort.
Data Acquisition Knowledge Base
The Concorde, developed through a groundbreaking UK–France partnership, was a supersonic airliner that underwent one of the most extensive testing programs in aviation history. Over a decade, engineers and test pilots logged more than 5,000 flight hours, half at supersonic speeds, across global test sites. From extreme temperature trials to innovative engine and aerodynamic testing, Concorde’s development set new speed, safety, and international collaboration benchmarks.
Data Acquisition Knowledge Base
Learn how complex ADAS systems and autonomous vehicles are tested with vehicles and human drivers interacting on real roads under realistic conditions.
Data Acquisition Knowledge Base
Learn what is EtherCAT, how it works, its features, capabilities, applications, and how it is used by Dewesoft data acquisition and control systems.
Corporate News
Dewesoft partners with the Alpine Endurance Racing Team for the 2025 FIA WEC, providing advanced data acquisition for vehicle testing. Building on a strong 2024 season, Alpine fields two A424 Hypercars in an eight-race campaign, aiming for podiums with a reinforced lineup. Backed by experienced leadership and continuous development, the team targets success at iconic tracks like Le Mans, Spa, and Fuji.
Data Acquisition Knowledge Base
Temperature measurement has evolved from early relative indicators to precise, calibrated methods. Key developments include thermometers, thermocouples, RTDs, thermistors, and infrared sensors, enabling accurate readings across industries. Modern advancements, like thermal imaging and smart sensors, ensure reliable data collection, with Dewesoft DAQ systems providing high-quality signal conditioning for various temperature measurement applications.
Product Updates
Dewesoft’s OBSIDIAN was named 2024 Product of the Year by SAE Tech Briefs for its innovative, long-term data acquisition capabilities. Built on a rugged, low-power Linux platform, OBSIDIAN combines high-end signal conditioning, real-time data streaming, and remote control via mobile app, making it ideal for demanding industrial and mobile applications.
Data Acquisition Knowledge Base
History of data acquisition article shows how the industry evolved from early strip chart and tape recorders into the modern digital data acquisition era.
Corporate News
Dewesoft has opened a new office in Dubai Silicon Oasis to support its growth in the Middle East, focusing on the UAE, Saudi Arabia, Bahrain, Oman, and Qatar. Led by Gabriele Ribichini from Dewesoft Italy, the new office will provide advanced data acquisition solutions for industries like power, oil, and structural monitoring in this rapidly developing region.
Data Acquisition Knowledge Base
Learn about RTD sensors (Resistance Thermometer Detectors), types of RTD sensors, how they work, and how to measure temperature with Dewesoft DAQ systems.
Data Acquisition Knowledge Base
In this article, you will learn about the different types of A/D converters used in data acquisition systems and the basic technology of each type of ADC.
Data Acquisition Knowledge Base
In this article, you will learn what is power analysis and electrical power measurement, why do we need it, and how is performed with a power analyzer.
Data Acquisition Knowledge Base
Durability testing evaluates products under real-world conditions to ensure they perform reliably. It involves various tests like vibration, thermal cycling, and drop testing to identify flaws early and improve quality. Crucial across industries, it detects defects, ensures compliance, and enhances product longevity.
Data Acquisition Knowledge Base
Destructive testing (DT) and nondestructive testing (NDT) are critical for evaluating material quality and structure integrity, differing mainly in their testing approaches. DT tests materials to failure to gauge their maximum capacity, essential for stringent safety standards, while NDT assesses without damage, allowing for repeated testing, crucial for industries where safety is paramount. Both methods are vital across various sectors, ensuring component safety, performance, and reliability.
Data Acquisition Knowledge Base
Aerospace telemetry collects and transmits critical data—such as temperature, pressure, and speed—from onboard sensors to ground stations for real-time monitoring and analysis. Using specialized sensors, commutators, robust RF links, and synchronized ground receivers, telemetry guarantees accurate, time-aligned data that underpins mission safety and success.
Data Acquisition Knowledge Base
Pressure measurement, essential in various industries, involves monitoring processes and is defined as force per unit area. Key types include absolute, gauge, and differential pressure, measured in units like Pascal and psi. Understanding the principles, sensors, and technologies behind pressure measurement is essential for selecting the appropriate method for specific applications.
Data Acquisition Knowledge Base
Aerospace telemetry has evolved from early radio systems to sophisticated digital technology, enabling real-time monitoring and control of spacecraft and aircraft. This technology has supported critical missions from early aviation to the space race and modern commercial ventures. Today, telemetry integrates advanced technologies like AI and quantum encryption, remaining essential as space exploration advances toward deep space missions and potential Mars colonization.
Data Acquisition Knowledge Base
A dynamometer measures force, torque, and power output in engines and mechanical devices, which are vital for performance and efficiency assessments in the automotive, aerospace, and manufacturing industries. Originating in the 18th century, dynamometers have advanced to include technologies like electric motors and computer software for precision. They are used for engine testing, cable tension measurement, and muscle strength evaluation.
Product Updates
Learn more about progress in battery test technology and the SIRIUS XHS-PWR electric vehicle DAQ system which is based on advanced core technologies.
Data Acquisition Knowledge Base
Learn why the usage of isolated amplifiers is highly recommended, in order to ensure reliable measurements, and protect your instrument from damage.
Data Acquisition Knowledge Base
The complete guide to signal conditioning in data acquisition. Learn what signal conditioning is, types of signal conditioners, and the technology behind.
Data Acquisition Knowledge Base
eVTOL (Electric Vertical Take-Off and Landing) aircraft transform urban mobility by combining electric propulsion with vertical takeoff and landing capabilities, perfect for congested areas. Emerging in the 2010s, driven by advances in propulsion and battery tech, eVTOLs reduce noise and emissions and can be autonomous or piloted.
Corporate News
NASA TECH Briefs has named Dewesoft's OBSIDIAN as the Product of the Month for August 2024. OBSIDIAN is a versatile DAQ instrument combining high-end data logging, real-time EtherCAT data serving, and advanced signal conditioning, built for long-term stability and remote monitoring across various industrial applications.
Data Acquisition Knowledge Base
Impact testing assesses a material's toughness and durability under sudden forces, ensuring safety and performance in industries like automotive, aerospace, and construction. Methods such as Charpy, Izod, and drop weight tests help identify weaknesses, improve material formulations, and enhance product designs for real-world applications.
Data Acquisition Knowledge Base
In this article we will discuss how it is possible to integrate a full-featured DAQ system with a real-time control system getting the best of both worlds.
Data Acquisition Knowledge Base
OPC UA is an open-source, cross-platform data exchange standard developed by the OPC Foundation, enhancing secure and reliable communication among devices and systems. It supports various protocols and is widely used in industries like automation, energy, and pharmaceuticals for its interoperability, security, and scalability. Released in 2006, it represents a significant advancement over the Windows-only OPC Classic.
Data Acquisition Knowledge Base
PID controllers are essential in automation, using Proportional (P), Integral (I), and Derivative (D) terms to minimize errors and stabilize systems. They adjust outputs based on the difference between a desired setpoint and a measured value. Widely used in manufacturing, robotics, and automotive industries, they control processes such as temperature and pressure. Future advancements include IoT integration, adaptive tuning, and AI, enhancing efficiency and functionality.
Data Acquisition Knowledge Base
Learn how to interpret and understand the vibration data from your condition monitoring system & protect critical machinery from failure. Start saving now.
Data Acquisition Knowledge Base
Formula One (F1) and IndyCar are prestigious motorsport series with unique histories and rules. F1, from Europe, is known for its high-tech, hybrid engines and global fan base. IndyCar, rooted in the US, emphasizes speed and versatility on various tracks with simpler, cost-effective cars. F1 highlights technological innovation, while IndyCar offers accessible, diverse racing. Both provide thrilling high-speed competition with distinct appeals.
Data Acquisition Knowledge Base
Sensor fusion combines data from multiple sensors to create a detailed understanding of an environment, enhancing advanced machines like self-driving cars, drones, and robots. By integrating inputs from RADAR, LiDAR, cameras, GNSS, and IMUs and using advanced processing techniques such as Kalman filtering and neural networks, sensor fusion improves decision-making and functionality.
Data Acquisition Knowledge Base
Data logger is a small and relatively inexpensive stand-alone recorder that monitors and records real-time data such as voltage, temperature, and current.
Data Acquisition Knowledge Base
Test benches are critical for evaluating electronic and software systems across various industries, ensuring that products meet quality standards before market release. This article outlines their role in simulating real-world conditions to detect defects early, thus minimizing costly recalls and enhancing product safety. Utilizing hardware like oscilloscopes and software like DewesoftX, test benches are essential in sectors ranging from electronics to aerospace.
Case Studies
The article discusses the implementation of Data Acquisition systems at the Kudankulam Nuclear Power Plant in Tamil Nadu, India, focusing on how Commissioning Measurement Systems equipped with Dewesoft’s instruments ensure the safety and reliability of nuclear reactors.
Data Acquisition Knowledge Base
Sensors ultimate guide. See what the sensors are. Learn about major sensor types. Understand the importance of sensors in the data acquisition (DAQ).
Data Acquisition Knowledge Base
Find out which are the most important Dewesoft DAQ technologies and learn more about their principle of operation and how they improve the DAQ process.
Data Acquisition Knowledge Base
Learn about the differences between current transformers (CT) and current transducers, emphasizing that CTs are focused on power measurement, while transducers are concerned with signal conversion. This article compares the two providing comprehensive insights into the selection and usage of these devices for current measurement applications.
Data Acquisition Knowledge Base
This article explores diverse current sensor technologies, including Current Transformers (CT), DC-CT® Flux Technology, Fluxgate, Open-loop Hall Effect, Closed-loop Hall Effect, Fiber-optic Current Sensors, Shunt Resistors, and Rogowski Coils. It compares their features, applications, principles, advantages, disadvantages, and costs.
Data Acquisition Knowledge Base
The Boeing 747's journey began with a US military competition in 1963, leading to its development as a groundbreaking commercial passenger jet for Pan American Airlines. It overcame challenges, underwent extensive testing and evolved into various versions, serving unique roles like carrying the Space Shuttle and serving as Air Force One.
Data Acquisition Knowledge Base
The ultimate guide to ADC converters (Analog-to-Digital converters). Learn what do they do and which types are best for data acquisition applications.
Data Acquisition Knowledge Base
Learn what inertial measurement units and systems are, how they work and why they are used. Get to know their importance to a wide range of applications.
Corporate News
Dewesoft celebrated the grand opening of its expanded headquarters in September 2023. The expansion added two upper floors, a parking structure, storage space, eco-friendly features, and more.
Data Acquisition Knowledge Base
Electrical isolation is a separation of a circuit from other sources of electrical potential. Learn about importance of galvanic isolation in DAQ systems.
Data Acquisition Knowledge Base
The ultimate guide to shock and vibration measurement. Learn what is an accelerometer and what is the difference between various vibration sensors types.
Data Acquisition Knowledge Base
The article discusses the testing methods used for the Saturn V rocket, which was the largest and most powerful rocket ever built and played a crucial role in the Apollo Moon missions. The testing program involved various procedures to ensure the rocket's reliability and performance.
Data Acquisition Knowledge Base
Learn all about sound and noise, types of microphone transducers, and measurement devices used to measure sound level, pressure, power, and intensity.
Data Acquisition Knowledge Base
In this article you will learn about the different types of Data Acquisition Systems, see the major variants and understand how and where they can be used.
Data Acquisition Knowledge Base
Learn how digital DAQ system represents the optimal way to replace old oscillographic chart recorders, save money, and move your testing to the next level.
Data Acquisition Knowledge Base
Learn what is TEDS sensor technology (IEEE 1451.4), how it works. and how Dewesoft data acquisition systems use TEDS for seamless sensor connection.
Data Acquisition Knowledge Base
Learn all about data acquisition synchronization and timing methods and how they are used to synchronize single or multiple Dewesoft DAQ systems.
Data Acquisition Knowledge Base
Learn how the ADCs (analog to digital converters) were developed through history, from the first vacuum tubes to modern integrated circuit ADCs.
Data Acquisition Knowledge Base
What is electrical current and how is it measured? Find out in the article and learn the basics of exact current measurements and applications via sensors.
Data Acquisition Knowledge Base
Signal processing is used in order to analyse measured data. Read the article to learn how signal processing is performed and applied in DAQ applications.
Data Acquisition Knowledge Base
In this article, you'll learn what voltage measurement is, which voltage sensors and transducers are available today, and the basics of voltage measurement.
Data Acquisition Knowledge Base
In this article, you will learn what are the basic differences between data loggers and a data acquisition (DAQ) systems and how we differentiate them.
Data Acquisition Knowledge Base
See how load cell sensors work. Learn how weight measurements are made in science and industry. Understand how you can incorporate them into your testing.
Data Acquisition Knowledge Base
Learn what is a signal amplifier, how does it work, its applications, benefits, and how they are used in the context of a data acquisition (DAQ) system.
Data Acquisition Knowledge Base
In this article, we will discuss how you can measure digital signals, digital encoders, tachometers and RPM sensors with Data Acquisition (DAQ) systems.
Data Acquisition Knowledge Base
Learn about ADAS (Advanced Driver Assistance Systems) and its safety features designed to remove the human error component when operating vehicles.
Data Acquisition Knowledge Base
Learn about key types of ADAS sensors used in today's autonomous vehicles. What are lidar, radar, sonar, cameras, and GNSS sensors? Read the entire guide.
Data Acquisition Knowledge Base
See the list of organizations and standards that take care of various aspects of vehicle safety, which necessarily involve ADAS and autonomous vehicles.
Data Acquisition Knowledge Base
Learn how to perform condition monitoring with Dewesoft Condition Monitoring Systems and identify problems of the critical machinery at the right time.
Data Acquisition Knowledge Base
Torque is a rotational force that is intended to rotate a driveshaft, screw, or wheel. Read this article to learn all about torque and how to measure it.
Data Acquisition Knowledge Base
Learn about countless strain gauge applications across all major industries, including aerospace, automotive, manufacturing, civil engineering, and more.
Data Acquisition Knowledge Base
In this article, you will learn how to measure position and displacement with LVDT sensors, how they work, and how you can use them in your testing.
Data Acquisition Knowledge Base
This article will teach you what is condition monitoring and how it can prevent machinery failure and lower your maintenance costs.
Data Acquisition Knowledge Base
In this article, you will learn what is a thermocouple, which are the basic types available, and how the temperature is measured with these sensors today.
Case Studies
Learn how the automation of the report generation process provided to be a huge time-saver after acquiring data with Dewesoft measurement equipment.