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Ultrasonic echo signal envelope calculation method, device and system and storage medium

A calculation method and echo signal technology, applied in the processing of detection response signals, complex mathematical operations, etc., can solve problems such as large amount of calculation, poor signal bandwidth compatibility, etc.

Inactive Publication Date: 2021-05-18
全测(厦门)科技有限责任公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Envelope detection can be implemented by hardware, but the compatibility with signal bandwidth is not good
Software implementation methods include digital filtering method, Hilbert transform, etc., which require a large amount of calculation and are not suitable for low-end microcontrollers.

Method used

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  • Ultrasonic echo signal envelope calculation method, device and system and storage medium
  • Ultrasonic echo signal envelope calculation method, device and system and storage medium
  • Ultrasonic echo signal envelope calculation method, device and system and storage medium

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Embodiment Construction

[0025] Such as figure 1 As shown, the present invention discloses a method for calculating the envelope of an ultrasonic echo signal, which includes the following steps:

[0026] Step 1. Obtain the ADC sampling rate and the center frequency of the ultrasonic signal, and calculate the number of sampling points m of each ultrasonic cycle according to the ADC sampling rate and the center frequency of the ultrasonic signal.

[0027] The purpose of calculating the number of sampling points is to make the window width equal to one period, which can ensure that the calculated envelope value is larger under the condition of a small calculation amount, and improve the signal-to-noise ratio. The number of sampling points m=ADC sampling rate / center frequency of ultrasonic signal.

[0028] Step 2. Use the number of sampling points m as the window width, take out the sampling data from the ultrasonic echo ADC cache to calculate the moving variance, and save the calculated variance as enve...

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Abstract

The invention relates to an ultrasonic echo signal envelope calculation method, device and system and a storage medium. The method comprises the steps of: a sampling point number calculation step, specifically, obtaining an ADC sampling rate and the center frequency of ultrasonic signals, and calculating the sampling point number m of each ultrasonic period according to the ADC sampling rate and the center frequency of the ultrasonic signals; and an envelope data calculation step, specifically, taking the sampling point number m as a window width, taking out sampling data from an ultrasonic echo ADC cache to carry out movement variance calculation, and storing a calculated variance as envelope data. According to the method, the envelope of the ultrasonic signals is calculated by adopting the variance; and therefore, the method has the advantages of smallcalculation amount and high compatibility, and can be suitable for being used by a low-end single-chip microcomputer.

Description

technical field [0001] The invention relates to the field of ultrasonic signal processing, in particular to a method, device, system and storage medium for calculating the envelope of an ultrasonic echo signal. Background technique [0002] In ultrasonic signal processing, the calculation of echo starting point is a key step, and envelope detection is a relatively common method. Envelope detection can be realized by hardware, but the compatibility of signal bandwidth is not good. Software implementation methods include digital filtering method, Hilbert transform, etc., which require a large amount of calculation and are not suitable for low-end single-chip microcomputers. [0003] In view of this, the inventor made in-depth thinking on the above-mentioned existing problems, and thus produced this case. Contents of the invention [0004] The object of the present invention is to provide a method, device, system and storage medium for calculating the envelope of an ultraso...

Claims

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Application Information

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IPC IPC(8): G01N29/44G06F17/18
CPCG01N29/44G06F17/18
Inventor 林忠侣林聪聪姚鸿义赖延军许吉祥
Owner 全测(厦门)科技有限责任公司
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