REPOSITIONABLE VOLAR MODULE
A system for sensing one or more biometrics. In some embodiments, the system includes a first wearable instrument; a second wearable instrument including a biometric sensor; a conductive connection between the first wearable instrument and the second wearable instrument; and a strap, sized and dimensioned to be disposed about a wrist. The system may be capable of securing the first wearable instrument to the strap, of securing the second wearable instrument to the strap at a first position relative to the first wearable instrument, and of securing the second wearable instrument to the strap at a second position relative to the first wearable instrument.
1 . A system, comprising:
a first wearable instrument;
a second wearable instrument comprising a biometric sensor;
a conductive connection between the first wearable instrument and the second wearable instrument; and
a strap, sized and dimensioned to be disposed about a wrist,
the system being capable of:
securing the first wearable instrument to the strap;
securing the second wearable instrument to the strap at a first position relative to the first wearable instrument; and
securing the second wearable instrument to the strap at a second position relative to the first wearable instrument.
2 . The system of claim 1 , wherein the conductive connection is configured to supply power, from the first wearable instrument to the second wearable instrument.
3 . The system of claim 2 , wherein the first wearable instrument comprises a battery configured to supply power to the first wearable instrument and the second wearable instrument.
4 . The system of claim 1 , wherein the conductive connection is configured to transmit signals from the second wearable instrument to the first wearable instrument.
5 . The system of claim 4 , wherein the first wearable instrument comprises a radio configured to transmit measurement data.
6 . The system of claim 5 , wherein the first wearable instrument is configured:
to receive measurement data obtained by the second wearable instrument; and
to transmit the measurement data, via the radio.
7 . The system of claim 4 , wherein the conductive connection is further configured to transmit signals from the first wearable instrument to the second wearable instrument.
8 . The system of claim 1 , wherein:
in the first position, the second wearable instrument is separated from the first wearable instrument by a first distance along the strap;
in the second position, the second wearable instrument is separated from the first wearable instrument by a second distance along the strap; and
the first distance differs from the second distance by less than 5 mm.
9 . The system of claim 8 , wherein the first distance differs from the second distance by less than 2 mm.
10 . The system of claim 1 , wherein the system is capable of:
securing the second wearable instrument to the strap at a plurality of positions, including the first position and the second position, relative to the first wearable instrument; and
the plurality of positions includes 5 distinct positions.
11 . The system of claim 10 , wherein the plurality of positions includes 20 distinct positions over a range of distances, along the strap, between the first wearable instrument and the second wearable instrument, the range of distances including:
a first distance, and
a second distance greater than the first distance by 5 mm.
12 . The system of claim 1 , wherein the first wearable instrument comprises a spectrophotometer.
13 . The system of claim 1 , wherein the biometric sensor is a sensor selected from the group consisting of photoplethysmography sensors, speckleplethysmography sensors, speckle imaging sensors, and diffuse correlation spectroscopy sensors.
14 . The system of claim 1 , further comprising a third wearable instrument, wherein the system is further capable of securing the third wearable instrument to the strap.
15 . The system of claim 1 , comprising one or more processing circuits configured:
to receive a sequence of measurements from the second wearable instrument; and
to calculate a signal quality indicator.
16 . The system of claim 15 , wherein the one or more processing circuits are further configured to display the signal quality indicator to a user.
17 . The system of claim 15 , wherein the signal quality indicator is based on a frequency-domain analysis of the sequence of measurements.
18 . The system of claim 15 , wherein the signal quality indicator is based on a plurality of fiducial points in a waveform corresponding to the sequence of measurements.
19 . The system of claim 15 , wherein the signal quality indicator is based on a morphological analysis of a waveform corresponding to the sequence of measurements.