| 摘要 |
FIELD: medicine.SUBSTANCE: invention relates to field of medical device building, in particular to devices for ultrasound echolocation if internal organs. Device contains receiving-transmitting module, which includes receiving channels of signals from elements of ultrasound sensor, each receiving channel of signals is electrically connected via individual analogue-digital converter with primary random access memory (RAM) of FIFO type, which in its turn is connected with primary filter-interpolator, secondary random access memory of FIFO type. Primary RAM is connected with primary unit of shift registered, outlets of primary filter-interpolator and primary unit of shift registered are connected with respective inlets of two secondary filter-interpolators, said units being connected via secondary inlets of shift registered with respective inlets of beam shapers, each of which is connected with respective adder of channels and includes successively connected multiplexor, secondary RAM and multiplier. Each filter-interpolator represents filter-interpolator with fixed symmetric impulse characteristics and includes shift registers, intermediate adders, multipliers and total adder. In primary filter-interpolator shift registered are combined in one line, and in secondary filter-interpolator shift registers are combined in two lines, one of which is connected with primary unit of shift registers, the other one is connected with primary filter-interpolator.EFFECT: application of the invention ensures reduction of hardware expenses for improvement of dynamics of ultrasound image formation.3 cl, 5 dwg |
