Abstract
The development of an auto-blood grouping system of is our great concern. in this system, detection of the state of blood whether the blood in cells is agglutinative or not is considered the most important. Recently we have developed the new detection system which has the following characteristics :
(1) A semi-closed flat-shaped cell was devised for blood reaction, which is convenient for viewing optical-states of the blood.
(2) In order to convert an optical image in the cell into the electric signal, a vibrating fibre camera having a function of one-dimensional scanning was developed. Wave shapes of the signal corresponding to the optical image in the cell were obtained by this method distinctly and in detail (in high resolution), and in S/N ratio higher than 20 db.
(3) In the electronic signal processing unit, three following points were examined : (a) signal. level, (b) changing rate of the signal level with time and (c) total existing time width of the signal within the limited scanning time.
And we experimentally succeeded in detecting whether the blood is agglutinative or not exactly without being disturbed by external impulsive noises.
