Нагорский Михаил Витальевич (RU),Нагулин Николай Евгеньевич (RU),Нагулин Сергей Николаевич (RU)
申请号：
RU2018112302
公开号：
RU0000180351U1
申请日:
2018.04.05
申请国别(地区):
RU
年份:
2018
代理人:
摘要：
The utility model belongs to the field of medical instrument making, in particular to devices for ultrasonic echolocation of internal organs, and can be used in medical diagnostic systems. Provides a reduction in hardware costs for the implementation of adaptive focusing, which affects the quality of the ultrasound image formed, due to the implementation of the phase correction method with the possibility of constructing a small device. The device includes a multi-element ultrasonic sensor 1 connected to the output of the switch 2 of the elements of the multi-element ultrasonic sensor 1 connected to the pulse shaping unit 3. To the switch 2, an analog receiver 4 is connected in-line, which in turn is connected by its outputs to the corresponding input of one of the receiving channels 5. Each receive channel contains a digital delay line 6, which includes a sequentially connected buffer memory (BLU) 7 and a filter interpolator 8 connected to a multiplier 9. The central receiving channel 5 comprises a phase shift driver 10, and each of the other receiving channels 5 comprises a phase shift driver 10 and a phase corrector 11 signal delay. The phase shift generator 10 comprises a quadrature demodulator 12, which includes multipliers 13, 14 whose outputs are connected to the inputs of the low-pass filters (LPF) 15, 16 whose outputs are connected to the inputs of the argument calculator 17. The phase delay corrector 11 (see Figure 3) comprises a series-connected subtracter 18, a signal time delay generator 19, and an adder 20. The device comprises a reference frequency generator 21 common to all of the receive channels 5, a signal delay generator 22 and an adder 23. 2 zp. 4-yl, 4 yl.Полезная модель относится к области медицинского приборостроения, в частности к устройствам для ультразвуковой эхолокации внутренних органов, и может быть использована в системах медицинской диагностики. Обеспечивает снижение аппаратных затрат для реализации адаптивной фокусировки, влияющей на
