| 摘要 |
The blood test chip for a blood substance measuring device has an isolated substrate, first and second electrodes, an identification electrode, an electric resistor and a reactive film. When performing a blood test, a blood sample is dropped into an opening on the blood test chip, which is inserted into the device. A microprocessor provides a constant voltage to the second electrode. Two corresponding reaction currents are delivered to a current to voltage converting and amplifying circuit and converted into two corresponding voltage values, which are then delivered to a built-in analog-to-digital converter module of the microprocessor to get two digitized voltage values. A signal read by the identification electrode is compared with the electric current contrast values stored in the built-in memory unit to get an optimum electric current versus concentration function to calculate a concentration value of the test substance in the blood sample.
|
