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reflectors but then backwards to IDTs where is transformed into an electromagnetic signal
emitted by the antenna to a rider. Thank to the low SAW velocity it is possible to get long
time delays and prevent echo signals, but the sampling time exceeds 10
-5
s, so the system can
be used in driving objects (agriculture machines, portable devices of farmers, etc.). The
intelligent system enables to extract the initial signal containing spectral reflection
characteristics from the investigated biomatter. The principal advantages of the developed
system on a chip e-eye with wireless passive SAW retransmitters are low-power
consumption, high reliability and low cost and unlimited operation life. The intelligent LED
microsensory system with the wireless active SAW extra has an energy source and
semiconductor microcircuitries for the signal multiplication and the increase in operating
distances, but the working life of such devices decreases. The identification of active SAW
retransmitters can be realized by changing distances between two IDTs. The readout
distance of the active SAW retransmitter with the power source (10 W) can achieve up to 50
km therefore [1, 2, 15]. The basic future tendency of mobile technologies requires the
development of intelligent sensory systems and networks which are able to adapt to
different conditions of real-time monitoring of the individual human biosafety flexible. If
agrotechnical machines, farm enterprises with portable mobile analyzers and mobile devices
are equipped with “CDOT” developed by us, then agriculture will be more precise and
economic, but the food biosafety of countries will be improved (Fig. 33a,b). Information
patterns of soil are presented in the form of electronic and virtual maps, e.g., an electronic
map of applied nutrients and organic fertilizers, of the level of crop yield, of the yield of soil
for last years or an information-microbial state of soil. The human biosafety is better
controlled by intelligent systems using an electronic satellite map of field, electronic maps of
the biosafety of crops, plant and animal foods along with electronic intellect-maps for
precision agriculture [3, 4, 8].
Fig. 33. (a) Intellect-map and virtual electronic ones for precison agriculture and the human
biosafety. (b) Intelligent sensory system on a chip e-eye for the pattern recognition of soil
