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Power monitoring device based on multiple paths of driving signals

A multi-channel drive, power monitoring technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as difficulty in applying multi-array element ultrasonic systems and inability to use online detection.

Pending Publication Date: 2021-10-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The device only detects the output power of the power amplifier, and cannot be used for online detection of the power amplifier and the load;
[0008] (2) Difficult to apply to multi-element ultrasound systems

Method used

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  • Power monitoring device based on multiple paths of driving signals
  • Power monitoring device based on multiple paths of driving signals

Examples

Experimental program
Comparison scheme
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Embodiment

[0042] The power monitoring device for four driving signals is taken as an example below for further description.

[0043] Such as figure 2 As shown, the four driving signals are named as driving signal #1, driving signal #2, driving signal #3 and driving signal #4 from top to bottom. After the power amplifier, the input enters the channel switching module, and the four-element ultrasonic transducer array is named as transducer #1, transducer #2, transducer #3 and transducer #4 from top to bottom.

[0044] In this embodiment, the control module 1 includes a chip or device with calculation and output functions, and sends an instruction to the channel switching module 2 to control switching of the drive signal channel connected to the power detection module. The control module 1 adopts a microcontroller with a system The clock completes the timing function and the digital output pin, which can output high and low levels of 3.3V or 0, thereby controlling the connection status o...

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Abstract

The invention relates to a power monitoring device based on multiple paths of driving signals. The device comprises a control module which is used for generating a control signal, and determining a driving signal channel which carries out power detection at present, a channel switching module which is used for receiving the control signal and switching driving signal channels for power detection, and a power detection module which is used for coupling, calculating and displaying the incident power and the reflection power of the driving signal of the current channel. Compared with the prior art, the power monitoring device has the advantages of power monitoring based on multiple paths of different types of driving signals, expandability, non-intrusive power monitoring and the like.

Description

technical field [0001] The invention relates to a multi-element ultrasonic system, in particular to a power monitoring device for multi-channel driving signals. Background technique [0002] Multi-element ultrasound systems are often used in high-intensity focused ultrasound (HIFU) therapy. The principle of HIFU ablation of tumors is to focus ultrasound energy on the target area to cause protein coagulation necrosis of tissue cells near the area, and then complete For treatment, the sound power of HIFU is determined by the power of the driving signal. Therefore, monitoring the power of each driving signal in a multi-element ultrasound system is beneficial to ensure the safety and effectiveness of treatment. [0003] Chinese patent (application number: 201720089620.6, application date: January 19, 2017, applicant: Shenzhen Guoren Communication Co., Ltd.) "power detection device for multi-channel radio frequency signal detection" discloses a multi-channel The device for radio...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 吉翔庞博刘金明白景峰陈亚珠
Owner SHANGHAI JIAO TONG UNIV
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