Multi-channel optical pressure sensor

A circulatory support device, comprising:

• a rotor;
• a motor configured to drive rotation of the rotor at one or more speeds;
• a first optical pressure sensor configured to detect a first pressure signal;
• a second optical pressure sensor configured to detect a second pressure signal;
• and
• at least one hardware processor configured to:
• determine a differential pressure signal based, at least in part, on the first pressure signal and the second pressure signal.

A multi-channel optical pressure sensor, comprising:

• at least one light-emitting diode (LED);
• a plurality of sensors including a first sensor coupled to the at least one LED via at least one first optical fiber and a second sensor coupled to the at least one LED via at least one second optical fiber;
• a detector module coupled to first sensor and the second sensor, the detector module comprising:
• at least one lens, wherein the at least one lens comprises a plano lens;
• and
• an image sensor configured to sense light received from the at least one lens;
• and
• at least one hardware processor configured to determine based, at least in part, on the light sensed by the image sensor, a first pressure measured at the first sensor and a second pressure measured at the second sensor.

A multi-channel optical pressure sensor, comprising:

• at least one light-emitting diode (LED);
• a plurality of sensors including a first sensor coupled to the at least one LED via at least one first optical fiber and a second sensor coupled to the at least one LED via at least one second optical fiber;
• a detector module coupled to first sensor and the second sensor, the detector module comprising:
• at least one lens, wherein the at least one lens includes at least two lenses configured to collectively magnify a light signal incident on the at least one lens;
• and
• an image sensor configured to sense light received from the at least one lens;
• and
• at least one hardware processor configured to determine based, at least in part, on the light sensed by the image sensor, a first pressure measured at the first sensor and a second pressure measured at the second sensor.

A multi-channel optical pressure sensor, comprising:

• at least one light-emitting diode (LED);
• a plurality of sensors including a first sensor coupled to the at least one LED via at least one first optical fiber and a second sensor coupled to the at least one LED via at least one second optical fiber;
• a detector module coupled to first sensor and the second sensor, the detector module comprising:
• at least one lens, wherein the at least one lens includes at least two lenses configured to collectively magnify a light signal incident on the at least one lens;
• an image sensor configured to sense light received from the at least one lens, wherein the image sensor comprises a two-dimensional image sensor;
• and
• a Fizeau arranged between the at least one lens and the image sensor;
• and
• at least one hardware processor configured to determine based, at least in part, on the light sensed by the image sensor, a first pressure measured at the first sensor and a second pressure measured at the second sensor.