Sensing system with improved fluidics control
AssigneeAnalog Devices International Unlimited Company
InventorsYouri Victorovitch Ponomarev, Erin Eda Evke
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for fluid sensing system are disclosed. The method can include providing a first portion of a sample fluid in a sensing channel, holding the first portion of the sample fluid in the sensing channel for a first diffusion period, after the first diffusion period, providing a second portion of the sample fluid in the sensing channel, holding the second portion of the sample fluid in the sensing channel for a second diffusion period, and after the second diffusion period, sensing the second portion of the sample fluid in the sensing channel by a sensing element. Providing pulses of sample with intervening diffusion periods can produce more uniform analyte concentration across sensors with less overall volume of sample fluid.
Claims14
A method of operating a fluid sensing system, the method comprising:
- prior to sensing a sample fluid in a sensing channel by a sensing element:
- providing a first portion of the sample fluid in the sensing channel;
- holding the first portion of the sample fluid in the sensing channel for a first diffusion period;
- after the first diffusion period, providing a second portion of the sample fluid in the sensing channel;
- and
- holding the second portion of the sample fluid in the sensing channel for a second diffusion period;
- and
- after the second diffusion period, sensing the sample fluid in the sensing channel by the sensing element.
Dependencies are inferred from the claim text.