METHOD AND SYSTEM FOR CARRYING OUT ENVIRONMENT MONITORING Russian patent published in 2007 - IPC G01N33/18 G01N21/17 

FIELD: medicine.

SUBSTANCE: method involves setting an invertebrate under test into controllable environment, irradiating it with infrared optical bandwidth radiation via transmitting optical fiber having its output end face placed on its rigid external cover heart zone, and optical radiation source making optical contact with transmitting optical fiber input end face. Reflected optical radiation is received with receiving optical fiber having its input end face located on rigid external cover of the invertebrate under test in heart zone. It is transformed into electric signal by means of the optical radiation receiver which makes optical contact with output end face of the receiving optical fiber. The received signal is transformed into digital codes, entered them into computer, codes digital filtration is carried out that is correlated with signal shape and frequency. Electric signal period values sample is calculated and saved. Method involves calculating sample dispersion or arithmetic mean of modulus of difference of each two electric sampled signal period values neighboring in time and an ecological hazard signal is sent when electric signal period sample dispersion threshold value or arithmetic mean of modulus of difference of each two neighboring in time electric sampled signal period values is violated. The system has computer and at least, one digital cardiac activity signal shaper. The shaper has in series connected cardiac activity transducer, transmitting and receiving optical fibers, optical radiation source and optical radiation receiver, amplifier and the analog-digital converter connected to computer input channel with its output channel. Cardiac activity transducer has casing having member for setting it on invertebrate body under test having rigid integument. Transmitting optical fiber input end face and receiving optical fiber output end face make optical contact to optical radiation source and to optical radiation receiver, respectively. The transmitting optical fiber output end face and receiving optical fiber input end face are turned in the same direction and separated in the casing with some distance, satisfying an inequality (πd²P)^0.07 - 2.2 (1 / (πd²P))^0.02≤R≤(πd²P)^0.07 + 2.2 (1 / (πd²P))^0.02, where R is the distance between a output end face of the transmitting optical fiber and input end face of receiving optical fiber, mm; Р is the optical radiation source power, mW; d is the transmitting optical fiber or reception optical fiber diameter, mcm.

EFFECT: increased reliability of environment control; wide range of functional applications; reduced price and simplification of system operation.

19 cl, 4 dwg