Patent application number | Description | Published |
20110094290 | LOW POWER PRECONCENTRATOR FOR MICRO GAS ANALYSIS - A low power preconcentrator for use in micro gas analysis, such as gas chromatography, and a system that employs the preconcentrator is disclosed. The preconcentrator includes a reservoir that comprises a heater membrane and elements coated at least partially with an adsorbent, and ports for receiving and discharging an analyte in communication with the reservoir. At least a portion of the reservoir (e.g., a cap) is made of a material having a thermal conductivity less than about 100 W/(m·K) and/or the heater membrane is made of a material that has a temperature difference less than about 75° C. when heated. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims. | 04-28-2011 |
20120136268 | PHOTO-IONIZATION DETECTORS AND ASSOCIATED METHODS THEREOF - A photo ionization detector (PID) is provided for selectively determining various compounds or gases present in a breath sample. The PID, comprises a substrate comprising a gas ionization chamber, at least one pair of ion sensing electrodes, and at least one amplifying circuit; and an ultraviolet (UV) ionization source to transmit a UV light beam into the gas ionization chamber. A system comprises the PID is also provided. A method of detecting a response pattern for various compounds or gases in breath using PID is also provided. | 05-31-2012 |
20130079667 | FLOW SENSOR WITH MEMS SENSING DEVICE AND METHOD FOR USING SAME - A flow sensor assembly, snore detection assembly, and methods for fabricating the same. The flow sensor assembly includes a flow conduit for fluid flow, a flow disrupter for imparting a disturbance to the fluid flow, a first sensor responsive to the disturbance of the fluid flow and configured to generate signals responsive to the disturbance of the fluid flow, and a processor for determining a flow rate for the fluid flow through the flow conduit based on a first algorithm determining an amplitude of the fluid flow in a first flow regime and a second algorithm determining a frequency of the fluid flow in a second flow regime. | 03-28-2013 |
20140001337 | SYSTEMS AND METHODS FOR PROCESSING AND IMAGING OF BIOLOGICAL SAMPLES | 01-02-2014 |
20140165718 | FLOW SENSOR ASSEMBLY HAVING A HYBRID SENSOR RESPONSE PROCESABLE TO PROVIDE A VOLUMETRIC FLOW MEASUREMENT OVER A WIDE DYNAMIC RANGE - A flow sensor system including a flow sensor assembly is provided. The sensor assembly may be configured to allow fluid flow through a flow conduit. A flow disrupter may be disposed in the flow conduit to impart disturbances to the fluid flow. A by-pass channel may be in fluid connection with the flow conduit and may be arranged to have a geometrical relationship relative to the flow conduit and the flow disrupter to affect flow characteristics in the bypass channel. One or more sensors may be disposed in the by-pass channel to generate a signal responsive to the flow characteristics in the bypass channel. In a first flow regime, the flow characteristics in the bypass channel may effect an amplitude response of the sensor, and in a second flow regime, the flow characteristics may effect a temporal response of the sensor. | 06-19-2014 |
20140260669 | SYSTEMS AND METHODS FOR HYBRID FLOW SENSING - Systems and method for flow sensing are provided. One system includes a flow conduit configured to allow fluid flow therethrough, a flow disturber disposed in the flow conduit and configured to impart a flow disturbance to the fluid flow and an actuator operably connected to the flow disturber to control the flow disturber to impart the flow disturbance to the fluid flow. The system further includes a plurality of sensors disposed in the flow conduit that are configured to have a geometrical and functional relationship with the flow conduit and the flow disturber, wherein the plurality of sensors are responsive to flow characteristics in the flow conduit. The system also includes a processor operably coupled to the plurality of sensors and configured to determine a flow rate of the fluid flow in the flow conduit using timing characteristics to select a processing method. | 09-18-2014 |
20150122009 | SYSTEMS AND METHODS FOR TEMPERATURE COMPENSATED FLOW SENSING - Systems and methods for temperature compensated flow sensing are provided. One system includes a flow disturber disposed in a flow conduit, wherein the flow disturber is configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit, wherein the plurality of sensors are responsive to flow characteristics in the flow conduit. The system also includes at least one temperature sensor disposed in the flow conduit, wherein the at least one temperature sensor is responsive to temperature characteristics in a vicinity of the plurality of flow sensors. The system additionally includes a measurand separator configured to generate an output signal based on at least one of the flow characteristics or temperature characteristics. The system includes a processor configured to determine a temperature compensated flow rate of the fluid flow in the flow conduit using the output signal. | 05-07-2015 |
20150122049 | SYSTEMS AND METHODS FOR FLOW SENSING IN A CONDUIT - Systems and methods for flow sensing in a conduit are provided. One system includes a flow disturber disposed in a flow conduit and configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit and responsive to flow characteristics in the flow conduit. The system also includes a frequency resolver configured to determine frequency information related to the fluid flow based on the flow characteristics. The frequency resolver uses one or more time sample windows to select data samples for use in determining the frequency information, wherein a length of one or more of the time sample windows is based at least in part on the flow characteristics. The system additionally includes a processor configured to determine a flow rate of the fluid flow in the flow conduit using the frequency information. | 05-07-2015 |