Available Technology

Energy Harvesting Smart Sensor

Using Asynchronous, One-Way Transmission from Sensor to Base Station
This technology was developed to enable a practical method of monitoring critical systems in harsh environments. Ambient energy is harvested to power smart sensors that monitor critical systems and components. Sensors lay fully unpowered until triggered by an appropriate event. When activated, the smart sensor takes a measurement, timestamps the data, wirelessly transmits it to a base station, and returns to its dormant state. All data read events are passed to the base stations main processor with a time stamp within one millisecond for correlating any other applicable data such as temperature. A data read can be configured to collect a single value, averaged value, data burst, or a continuous data stream. The event log and data is stored on a removable flash card and can be broadcasted over Ethernet for remote access. The sensors can also go into a sleep mode or become fully dormant to conserve power. The sensor system can be used in harsh environments, and constructed to meet MIL-SPEC and MIL-STD. The system can be utilized in commercial applications that require long term monitoring of events associated with different types of physical strain, stress, cryogenic/ambient temperatures, limit switches, 4-20 milliamps signals, 0-10 volt signals and magnetic fields. Sensors are capable of monitoring all types of facility components and systems, as well as: - Synchronous and asynchronous data collection - Wireless data transmission eliminates the need for wiring - Energy harvesting capability eliminates dependency on batteries
Abstract: 
The energy harvesting smart sensor is a highly power conservative monitoring system consisting of a base station and wireless sensor units. The sensors lay fully unpowered within a dormant state until they receive a trigger energy which consumes no stored power. When activated, the sensor takes a measurement, transmits the data to the base station with a synchronized time stamp, and then returns to its dormant state. The system can be utilized in commercial applications that require long term monitoring of events associated with different types of strain, temperatures, limit switches, currents, voltages and magnetic fields. Though designed to improve the monitoring of high-geared ball and linearly-actuated valves used in propulsion testing to predict valve life span and failure, its use is not limited to valves. It can monitor the operational data of any suitable structure, such as temperature in a particular location in a building, or the strain at a specific point on a bridge.
Benefits: 

Monitor Critical Systems in Challenging Environments

applications: 

The system can be utilized in commercial applications that require long term monitoring of events associated with different types of strain, cryogenic/ambient temperatures, limit switches, 4-20 milliamps signals, 0-10 volt signals and magnetic fields

Automotive industry

Cryogenics

Petroleum industry

Chemical industry

Reps: 
Patent Number: 
8,618,933
Internal Laboratory Ref #: 
SSC-TOPS-4
Patent Status: 
Patent Issue Date: 
October 16, 2015
Agency
NASA
Region
Southeast
State: 
Mississippi
Lab Representatives
Share to Facebook Share to Twitter Share to Google Plus Share to Linkedin