Abstract: An apparatus for measuring the flow rate of urine, including an encasement, configured to encase components of the apparatus; a receptacle bowl attached to the encasement, configured to be placed over a toilet bowl or seat, and direct fluid through a single point of exit to a fluid flow guide; the fluid flow guide, configured to transfer fluid from the receptacle bowl to an impeller; the impeller, configured to rotate along a rotation axis, wherein the impeller includes a plurality of blades, configured to receive the urine from the flow guide, and thereby rotate the impeller at a speed correlating with the flow rate of the urine; and an angular velocity sensor, configured to produce electric signals that correlate with the angular velocity or angular position of the impeller.

Abstract: Some embodiments relate to a vibration sensor. The vibration sensor comprises: a sensor base to couple to a vibration source; a piezoelectric transducer coupled on a first side of the transducer to the sensor base; at least one conductor coupled to the piezoelectric transducer; and a seismic weight positioned on a second side of the piezoelectric transducer; wherein the sensor base, the piezoelectric transducer and the seismic weight are aligned along an axis and arranged so that relative movement between the sensor base and the seismic weight arising from the vibration source causes a current to be generated in the piezoelectric transducer and an output signal corresponding to the generated current is detectable on the at least one conductor.

Abstract: Some embodiments relate to a vibration sensor. The vibration sensor comprises: a sensor base to couple to a vibration source; a piezoelectric transducer coupled on a first side of the transducer to the sensor base; at least one conductor coupled to the piezoelectric transducer; and a seismic weight positioned on a second side of the piezoelectric transducer; wherein the sensor base, the piezoelectric transducer and the seismic weight are aligned along an axis and arranged so that relative movement between the sensor base and the seismic weight arising from the vibration source causes a current to be generated in the piezoelectric transducer and an output signal corresponding to the generated current is detectable on the at least one conductor.

Abstract: Some embodiments relate to a vibration sensor. The vibration sensor comprises: a sensor base to couple to a vibration source; a piezoelectric transducer coupled on a first side of the transducer to the sensor base; at least one conductor coupled to the piezoelectric transducer; and a seismic weight positioned on a second side of the piezoelectric transducer; wherein the sensor base, the piezoelectric transducer and the seismic weight are aligned along an axis and arranged so that relative movement between the sensor base and the seismic weight arising from the vibration source causes a current to be generated in the piezoelectric transducer and an output signal corresponding to the generated current is detectable on the at least one conductor.

Abstract: Some embodiments relate to a vibration sensor. The vibration sensor comprises: a sensor base to couple to a vibration source; a piezoelectric transducer coupled on a first side of the transducer to the sensor base; at least one conductor coupled to the piezoelectric transducer; and a seismic weight positioned on a second side of the piezoelectric transducer; wherein the sensor base, the piezoelectric transducer and the seismic weight are aligned along an axis and arranged so that relative movement between the sensor base and the seismic weight arising from the vibration source causes a current to be generated in the piezoelectric transducer and an output signal corresponding to the generated current is detectable on the at least one conductor.

Abstract: An apparatus for measuring the flow rate of urine, including an encasement, configured to encase components of the apparatus; a receptacle bowl attached to the encasement, configured to be placed over a toilet bowl or seat, and direct fluid through a single point of exit to a fluid flow guide; the fluid flow guide, configured to transfer fluid from the receptacle bowl to an impeller; the impeller, configured to rotate along a rotation axis, wherein the impeller includes a plurality of blades, configured to receive the urine from the flow guide, and thereby rotate the impeller at a speed correlating with the flow rate of the urine; and an angular velocity sensor, configured to produce electric signals that correlate with the angular velocity or angular position of the impeller.

Abstract: Embodiments disclosed herein describe systems and methods for a user interface allowing a user to input characters, numbers, commands, symbols, etc. with a single hand. Embodiments of the user interface may be a hardware device configured to conform to a user's grip, wherein the device is configured to determine pressure caused by flexions of each of the digits on the user's hand.

Abstract: Embodiments disclosed herein describe systems and methods for a user interface allowing a user to input characters, numbers, commands, symbols, etc. with a single hand. Embodiments of the user interface may be a hardware device configured to conform to a user's grip, wherein the device is configured to determine pressure caused by flexions of each of the digits on the user's hand.