HAEMOGLOBINDETEKTOR.

摘要

The hemoglobin detector has an arrangement to determine the optical spectral differences in an absorbing material of a test sample (1). The systm uses two different wavelength sources (2,3) that are switched (4) alternately. The wavelengths are turned to the minimum and maximum absorption levels of the material, i.e. hemoglobin. The transmitted signals are received by two photoelectric (5,6) to generate proportional voltages. The values are integrated (7,12) and compared with threshold values (VS1-VS4) for input to the detector logic (16). The logic provides switching signals for operation of switching stages.