The invention relates to the field of
medical care electronic appliances, in particular to an electrocardiosignal compression sampling device and method based on a random
demodulation structure. The device comprises an FPGA controller, a pseudo-random
signal generator, a
frequency mixer, a filter, an AD converter, an
FIFO memory, a
data transmission chip, an upper computer OMP
algorithm and the like. The FPGA
control circuit is adopted as a main controller to control the pseudo-random
signal generator to generate pseudo-
random sequence signals, electrocardiosignals and the pseudo-
random sequence signals pass through the
frequency mixer at the same time, frequency components of the electrocardiosignals are distributed on the whole
frequency axis, low-frequency components are intercepted through the low-pass filter, AD low-frequency sampling is finally achieved, correct information can be obtained, sampling information is stored and then transmitted to an upper computer end of a computer, and electrocardiosignals can be accurately reconstructed through an OMP
algorithm. The device has the advantages that the electrocardiosignal sampling
power consumption is reduced, the endurance time of sampling equipment is prolonged, the storage capacity requirement of a memory in the equipment is reduced, and the storage cost is reduced.