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Ultrasonic endoscope transmitting and receiving front-end device

A receiving front-end and endoscope technology, which is applied in the field of ultrasonic endoscope transmitting and receiving front-end devices, can solve problems such as undesigned delay circuits and array element gating circuits, and achieve the effect of circuit function multiplexing

Inactive Publication Date: 2017-01-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this scheme does not design the delay circuit and array element gating circuit

Method used

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  • Ultrasonic endoscope transmitting and receiving front-end device
  • Ultrasonic endoscope transmitting and receiving front-end device
  • Ultrasonic endoscope transmitting and receiving front-end device

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the present invention will be further described:

[0026] As shown in Figure 1(a), the present invention provides an ultrasonic endoscope transmitting and receiving front-end device, including a core controller, a delay module, a multi-channel pulse transmitting circuit module, an array element gating circuit module, an ultrasonic transducer device, multi-channel limiter module and receiving front-end circuit module;

[0027] As shown in Figure 1(b), the core controller is mainly FPGA, its main function: as the control signal of the overall front-end device, including sending control signals to the multi-channel pulse transmission circuit module through the delay module, controlling the array element gating The path selected by the circuit module controls the receiving front-end circuit module to receive the ultrasonic echo signal; configures the chip, mainly configures the delay chip to select the delay time of the chip a...

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Abstract

The invention discloses an ultrasonic endoscope transmitting and receiving front-end device. The ultrasonic endoscope transmitting and receiving front-end device comprises a core controller, a delay module, a multi-path pulse transmitting circuit module, an array element gating circuit module, an ultrasonic transducer, a multi-path amplitude limiting module and a receiving front-end circuit module; the core controller is used for controlling the delay module, the array element gating circuit module and the receiving front-end circuit module; under the control of the core controller, the array elements of the ultrasonic transducer which are connected correspondingly are excited through excitation high-voltage pulses emitted by the multi-path pulse transmitting circuit module; the array elements of the ultrasonic transducer all receive echo signals and transmit the echo signals to the multi-path amplitude limiting module; the multi-path amplitude limiting module is provided with output ends used for suppressing influences on the receiving front-end circuit module caused by the excitation high-voltage pulses; the receiving front-end circuit module comprises integrated analog front-end chips used for receiving the control signals of the core controller and receiving ultrasonic echo signals; and after passing through the integrated analog front-end chips, the control signals and the ultrasonic echo signals are outputted to the core controller.

Description

technical field [0001] The invention relates to the field of ultrasonic emission, in particular to an ultrasonic endoscope emitting and receiving front-end device. Background technique [0002] There are two types of scanning methods of the existing ultrasonic array elements: linear stepped array (linear array) and linear phased array (phased array). In linear array scanning, not all array elements can be used at the same time, only part of them is excited each time, and the excitation signal has no delay; in phased array scanning, all array elements are excited and used, and the excitation control signal has a corresponding delay. Time. In the traditional ultrasound system, the circuit has a single function, and the circuit function cannot be fully utilized. [0003] In Patent No. CN201310656528, a receiving front-end device of a portable ultrasonic imaging system is proposed, which improves the design of ultrasonic transmitting circuit and ultrasonic echo filtering part....

Claims

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Application Information

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IPC IPC(8): G01S7/524G01S7/527
CPCG01S7/524G01S7/5276
Inventor 陈晓冬李溦陈晓帅卞光宇汪毅郁道银
Owner TIANJIN UNIV
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