Sensors/Data Acquisition

Detection of Carried and Dropped Objects in Surveillance Video

This software analyzes a video input stream and automatically detects carried and dropped objects in near-real-time. NASA’s Jet Propulsion Laboratory, Pasadena, California DARPA’s Mind’s Eye Program aims to develop a smart camera surveillance system that can autonomously monitor a scene and report back human-readable text descriptions of activities that occur in the video. An important aspect is whether objects are brought into the scene, exchanged between persons, left behind, picked up, etc. While some objects can be detected with an object-specific recognizer, many others are not well suited for this type of approach. For example, a carried object may be too small relative to the resolution of the camera to be easily identifiable, or an unusual object, such as an improvised explosive device, may be too rare or unique in its appearance to have a dedicated recognizer. Hence, a generic object detection capability, which can locate objects without a specific model of what to look for, is used. This approach can detect objects even when partially occluded or overlapping with humans in the scene.

Posted in: Briefs, TSP, Cameras, Electronics & Computers, Data Acquisition, Detectors


Signal Processing Software for Remote Vital Sign Monitoring

NASA’s Jet Propulsion Laboratory, Pasadena, California This software provides the processing for a non-contact system that remotely estimates the heart rate and respiration rate of individuals as they carry on daily activities, and also enables detection of heart and respiration rate through walls.

Posted in: Briefs, TSP, Electronics & Computers, Patient Monitoring, Data Acquisition


Visualization of fMRI Network Data

NASA’s Jet Propulsion Laboratory, Pasadena, California Functional connections within the brain can be revealed through functional magnetic resonance imaging (fMRI), which shows simultaneous activations of blood flow in the brain during response tests. However, fMRI specialists currently do not have a tool for visualizing the complex data that comes from fMRI scans. They work with correlation matrices that table what functional region connections exist, but they have no corresponding visualization.

Posted in: Briefs, TSP, Visualization Software, Electronics & Computers, Data Acquisition


Self-Diagnostic Accelerometer Field Programmable Gate Array

The system could be utilized as a portable and temporarily installed diagnostic system. John H. Glenn Research Center, Cleveland, Ohio The development of the self-diagnostic accelerometer (SDA) is important to both reducing the in-flight shutdowns (IFSD) rate — and hence reducing the rate at which this component failure type can put an aircraft in jeopardy — and also as a critical enabling technology for future automated malfunction diagnostic systems. Critical sensors, such as engine sensors, are inaccessible to the operator during typical operation due to safety concerns and enclosed environment. The SDA can diagnose the sensor in-flight and remotely with minimal interference with the typical operation of the sensor. The SDA system utilizes programmed health algorithms that can automatically determine the health, therefore increasing the precision in diagnosing sensor faults by removing the erroneous perspective and opinions of a human operator. The health of the sensor could also be determined immediately, which would remove its erroneous effect on a system that depends on the sensor.

Posted in: Briefs, TSP, Power Supplies, Thermal Management, Sensors


Capacitively Coupled, High-Voltage Current Sensing for Extreme Environments

NASA’s Jet Propulsion Laboratory, Pasadena, California Wide-temperature and extreme-environment electronics are crucial to future missions. These missions will not have the weight and power budget for heavy harnesses and large, inefficient warm boxes. In addition, extreme-environment electronics, by their inherent nature, allow operation next to sensors in the ambient environment, reducing noise and improving precision over the warm-box-based systems employed today.

Posted in: Briefs, TSP, Electronic Components, Power Supplies, Thermal Management, Sensors


Hands-Free Control Interfaces for an Extravehicular Jetpack

This hands-free approach could be applicable to other robotic interfaces requiring six-DOF control inputs. Lyndon B. Johnson Space Center, Houston, Texas To enable the human mobility necessary to effectively explore near-Earth asteroids and deep space effectively, a new extravehicular activity (EVA) jetpack is under development. The new design leverages knowledge and experience gained from the current astronaut rescue device, the Simplified Aid for EVA Rescue (SAFER). Whereas the primary goal for a rescue device is to return the crew to a safe haven, in-space exploration and navigation requires an expanded set of capabilities. To accommodate the range of tasks astronauts may be expected to perform while utilizing the jetpack, it was desired to research a hands-free method of control. This hands-free control method would enable astronauts to command their motion while transporting payloads and conducting two-handed tasks.

Posted in: Briefs, TSP, Machinery & Automation, Robotics, Sensors


Designing Smart Medical Devices with Force Sensing Technology

This session will explore the exciting new trend toward designing smart medical devices that provide critical force feedback to eliminate guesswork, improve outcomes, and increase consistency.

Posted in: Tech Talks, Tech Talks, Sensors