Sensors/Data Acquisition

Micromachined Sensors Monitor Train Rails and Predict Failures

Sensors designed to predict helicopter transmission failures are now used to detect problems in train tracks.

Spinoff is NASA's annual publication featuring successfully commercialized NASA technology. This commercialization has contributed to the development of products and services in the fields of health and medicine, consumer goods, transportation, public safety, computer technology, and environmental resources.

Posted in: Articles, Sensors, Failure analysis, Sensors and actuators, Sensors and actuators, Railway vehicles and equipment
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Wireless Tamper Detection Sensor and Sensing System

The sensors can detect and locate cracks, material strain, or impact damage.

NASA's Langley Research Center researchers have developed a wireless, connection-free inductor capacitor sensor system that can be placed on or embedded in materials and structures to monitor for and detect damage. The sensors can also be used to detect package tampering and pilfering. This innovation — SansEC (Sans Electrical Connections) — makes sensors more damage-resilient and more environmentally friendly to manufacture and use.

Posted in: Briefs, Sensors, Capacitors, Sensors and actuators, Wireless communication systems, Capacitors, Sensors and actuators, Wireless communication systems, Maintenance, Repair and Service Operations, Maintenance, repair, and service operations, Prognostics
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Intelligent Displacement Sensor Deployment Using MTConnect Protocol over Ethernet

The protocol interfaces to an intelligent sensor and provides data gathering using a PC application.

Quality measurements for design validation and certification requirements sometimes call for hundreds or thousands of sensors and actuators. Maintaining such a complex system is difficult, especially over an extended time period and inevitable personnel changes. Many hours are spent tracking down sensor problems related to the sensor, associated cables, mounting hardware, or some part of the data acquisition system. These are expensive, labor-intensive hours that consume valuable technical resources.

Posted in: Briefs, Sensors
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RFID System for Management of High-Risk Materials

This system safeguards the management of sensitive items in storage, transportation, and disposition.

For years, radio frequency identification (RFID) technology has been used in a variety of applications, from passports to inventory tracking. Homeland security concerns have heightened the need for sensitive, real-time tracking of thousands of radioactive and hazardous material packages to ensure accountability, safety, security, and worker and public health.

Posted in: Briefs, Sensors
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Wireless Damage Location Sensing System

The wireless, passive SansEC sensor detects package tampering, medication levels, temperature, and spoilage.

NASA Langley Research Center researchers have developed a wireless, open-circuit SansEC (Sans Electrical Connections) sensor that can be used for pharmaceutical applications without the need for physical contact. Many attributes of a container can be monitored, such as liquid or powder levels, temperature of contents, and changes caused by spoilage. Tampering can also be detected. The unique design of this thin-film sensor allows many of these properties to be measured with the sensor external to the container/package. Fill levels can be measured without the need to open the container. At the core of the technology is the NASA award-winning SansEC sensor, which is damage-resilient and environmentally friendly to manufacture and use. The sensors use a magnetic field response measurement acquisition device to provide power to the sensors and to acquire physical property measurements from them.

Posted in: Briefs, Sensors, Sensors and actuators, Wireless communication systems, Sensors and actuators, Wireless communication systems, Medical equipment and supplies, Pharmaceuticals, Reliability, Reliability
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Structural Health Monitoring System/Method Using Electroactive Polymer Fibers

Potential applications include impact, delamination, and fatigue crack sensing.

NASA's Langley Research Center has developed a novel polymer material that can be utilized as a real-time structural health monitoring sensor. The material is electroactive and generates a signal in response to a mechanical force. The material is also highly elastic, which allows for a large range of measurable strain levels, and is highly durable.

Posted in: Briefs, Sensors, Sensors and actuators, Sensors and actuators, Cardiovascular system, Product development, Fibers, Polymers
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Future Fashion Statement? New Material Generates Power from Human Motion

Vanderbilt University researchers developed an ultra-thin system that can harvest energy from the slightest of human motions — even sitting. Made from materials five thousand times thinner than a human hair, the technology may someday be woven into clothing to power personal devices.

Posted in: News, Energy, Energy Harvesting, Energy Storage, Data Acquisition, Sensors
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Sound-Off: How Do a Vehicle’s Imaging Sensors Filter Out Weather, Crosstalk?

A "Geiger-mode" lidar sensor sends out pulses at a high repetition rate (200 kHz), forming an image on the percent of pulses that return. The technology has been used by vehicle manufacturers to support collision avoidance, adaptive cruise control, and other Advanced Driver Assistance System (ADAS) applications. But how will factors like snow or another vehicle’s lidar impact a sensor's reading?

Posted in: News, Automotive, Imaging, Data Acquisition, Detectors, Sensors
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Technical Webinar Series from the Editors of SAE: Sensor Fusion and ADAS

In Conjunction with SAE

Millimeter wave radar. Three-dimensional Lidar. Bifocal camera vision. As advanced driver assistance system (ADAS) sensors progress toward integration into more sophisticated levels of autonomous driving, melding the unique capabilities of various sensor technology is a front-line requirement.

Posted in: On-Demand Webinars, Sensors
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New Heater Technology Reduces Space, Weight and Failure

The SmartHeat SLT Thin-Film heater is a new and unique self-limiting heater solution. Minco’s SmartHeat regulates temperature at the molecular level, eliminating the need for separate sensors and controllers which minimizes points of failure and reduces the total system footprint for space and weight sensitive applications.

Posted in: On-Demand Webinars, Sensors
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