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Frequency plot controller

A phase controller and phase control technology, applied in the direction of treatment, ultrasonic therapy, etc., can solve the problems of complex control, low ultrasonic phase adjustment accuracy and high cost, and achieve the effect of high control accuracy.

Inactive Publication Date: 2010-12-29
SHENZHEN LANDWIND IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a frequency and phase controller to overcome the defects of high cost, complicated control and low accuracy of ultrasonic phase adjustment caused by the ultrasonic tumor treatment system in the prior art using the AD9850 chip to adjust the phase of the ultrasonic signal

Method used

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  • Frequency plot controller
  • Frequency plot controller
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Embodiment Construction

[0016] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0017] Such as figure 1 As shown, at least one frequency and phase control component is set in the complex programmable logic device CPLD, the frequency and phase control component includes a phase control word register, a first adder and a comparator, and the phase control word register is connected to the input of the first adder , the first adder is connected to the input terminal of the comparator, the phase control word register is used to store the input phase control word and output the phase control word to the first adder, the first adder is used to combine the frequency control data and the phase control word After the addition operation is performed, it is output to a comparator, and the comparator is used to adjust the duty ratio of the output signal of the first adder according to the input reference voltage threshold.

[0018] Such as figu...

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Abstract

The invention discloses a frequency phase controller. At least one frequency phase control component is arranged in a complex programmable logic device CPLD and comprises a phase control word register, a first adder and a comparator, wherein the phase control word register is connected with the input end of the first adder which is connected with the input end of the comparator, the phase controlword register is used for storing input phase control words and outputting the phase control words to the first adder, the first adder is used for performing add operation for frequency control data and the phase control words and then transmitting to the comparator, and the comparator is used for performing duty ratio adjustment for the output signals of the first adder according to the threshold value of the input reference voltage.

Description

technical field [0001] The invention relates to the technical field of ultrasonic imaging equipment, in particular to a frequency and phase controller. Background technique [0002] In an ultrasonic tumor therapy system, it is necessary to realize the focusing of ultrasonic waves. Ultrasonic focusing includes two aspects: geometric focusing and electronic focusing. Electronic focusing is to control the phase of multiple beams of ultrasonic waves, so that multiple beams of ultrasonic waves have the same phase at the focal spot to obtain a high-quality focal spot. The ultrasonic phase is adjusted. Existing technology At present, the special chip AD9850 chip is used for ultrasonic phase adjustment in the system. As many channels of signals need phase modulation as there are chips of AD9850, which is expensive; under the control of the controller, the phase control word and frequency control word are written separately In the AD9850 control register, the phase adjustment of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N7/00
Inventor 杨清珍吴志强
Owner SHENZHEN LANDWIND IND