Time sequence control method and device of ultrasonic phased array and ultrasonic equipment

Abstract

The invention discloses a sequential control method and device of an ultrasonic phased array and ultrasonic equipment. The ultrasonic phased array comprises a plurality of channels, and the sequential control method of the ultrasonic phased array comprises the following steps: acquiring an input signal and a clock signal, and processing the input signal according to the clock signal to form a plurality of delay signals; wherein the delay times of the plurality of delay signals are different; acquiring a chip selection signal, and selecting a delay signal output to the channel corresponding to the chip selection signal according to the chip selection signal; wherein the number of the chip selection signals is the same as that of the channels. According to the embodiment of the invention, on the basis of ensuring the delay precision, the sequential control method of the ultrasonic phased array is simplified, and the operability of the sequential control method is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of ultrasonic technology, and in particular, to a method and device for timing control of an ultrasonic phased array, and ultrasonic equipment. Background technique [0002] With the rapid development of microelectronics technology and computer technology, ultrasound has been more and more widely used in life; especially ultrasonic phased array, because of its advantages in positioning, quantification and orientation, more and more Much attention. Ultrasonic phased array generates dynamic focused sound beams by changing the excitation signal of the element array in the phased array probe, so that the focused point has greater energy, and then uses the focused point to achieve ultrasonic imaging and nerve stimulation. In the design of the driving system of the ultrasonic phased array, there are strict requirements on the delay accuracy between the channels of the ultrasonic phased array. Therefo...

AI Technical Summary

Problems solved by technology

During phase-controlled transmission, under the action of the trigger signal, the delay counter starts counting, and the comparator compares the delay counter with the value in the delay value parameter register, and outputs a high-level pulse signal when the two are equal, as the subsequent address The enable signal of the generator; the delay algorithm is complex, and the delay accuracy is not high

Moreover, in the prior art, each channel of the ultrasonic phased array needs to correspond to a complete delay structure; when there are many channels of the ultrasonic phased array, the overall logic of the delay controller is more complicated and difficult to coordinate

Therefore, the timing control method of ultrasonic phased array in the prior art has the problem of poor delay stability or complicated control method

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