摘要:
A thin film piezoelectric polymer acoustic sensor for the passive detection of heart and blood flow sounds is described. Sensors may have initially slack film components which are tented by the mass of a housing when a sensor is positioned on acoustic medium. Enhanced sensor performance is provided by accommodation of the sensor spring constant to the spring constant of human flesh. Sensor performance may be enhanced by a combination of physical parameter ranges. A plurality of sensors may compose a linear array or an array aperture.
摘要:
A low profile acoustic array (10) is configured to selectively respond to shear waves while rejecting compression wave energy in the frequency range of interest. One sensor array is configured as a linear strip with a frame segment having at least one longitudinally extending rail and a plurality of sensor elements (20) extending therefrom. These sensor elements have a resilient core and opposing PDVF outer layers configured with opposing polarities onto the core. The linear strip array also includes a pair of separate electrical signal transmission paths. The transmission lines can include a series of undulations formed thereon to help minimize undesired mechanical crossover between sensors. A carrier member can be configured to be detachably releasable carries the discrete sensors to maintain the positional alignment until they are secured to a patient.
摘要:
A system and method is provided. In one aspect, the system and method may calculate a time period for each mode of a plurality of modes. The system and method may index through each mode for the corresponding time period to provide power to the plurality of thermal elements according to the mode. In another aspect the system and method may index sequentially through each mode of a plurality of modes and apply power to an indexed mode while measuring an electrical characteristic of the thermal elements for the indexed mode.
摘要:
A connector assembly is provided that includes an upper element and a lower element in contact with the upper element along a contour-matched interface. The first element and the second element are dielectric and each comprise a recess and a groove, the recesses cooperatively forming a cavity and the grooves cooperatively forming a channel communicating the cavity to exterior surfaces of the upper element and the lower element. A conductive plug is disposed within the cavity and is adapted for engaging a lead wire and a terminal pad. Preferably, the connector assembly further includes a clamping device for securing the connector assembly to a substrate and a spring element disposed within the cavity, wherein the conductive plug is disposed between the terminal pad and the spring such that the spring biases the conductive plug against the terminal pad.
摘要:
A system and method is provided. The system and method calculate target setpoints for each thermal element and index through each thermal element to provide power to the thermal element, sense an electrical characteristic of the thermal element, and determine if the thermal element exceeds a target setpoint for the thermal element based on the sensed electrical characteristic.
摘要:
A thermal array system is provided. The thermal array system having each thermal element connected between a first power node and a second power node of the plurality of power nodes and each thermal element being connected in electrical series with an addressable switch configured to activate and deactivate the thermal element.
摘要:
A voltage controlling circuit with power sharing components is provided. The circuit includes a voltage regulator for controlling an output voltage for a load and a device in communication with the voltage regulator for power sharing.
摘要:
A connector assembly is provided that includes an upper element and a lower element in contact with the upper element along a contour-matched interface. The first element and the second element are dielectric and each comprise a recess and a groove, the recesses cooperatively forming a cavity and the grooves cooperatively forming a channel communicating the cavity to exterior surfaces of the upper element and the lower element. A conductive plug is disposed within the cavity and is adapted for engaging a lead wire and a terminal pad. Preferably, the connector assembly further includes a clamping device for securing the connector assembly to a substrate and a spring element disposed within the cavity, wherein the conductive plug is disposed between the terminal pad and the spring such that the spring biases the conductive plug against the terminal pad.
摘要:
A thermal array system is provided. The thermal array system having each thermal element connected between a first power node and a second power node of the plurality of power nodes and each thermal element being connected in electrical series with an addressable switch configured to activate and deactivate the thermal element.
摘要:
A thermal system includes a plurality of thermal elements and a control system. The control system has at least three power nodes, wherein each thermal element of the plurality of thermal elements is connected between a pair of power nodes, such that each power node has one thermal element connected between itself and each other power node.