Multichannel ultrasonic collecting device for detecting nonmetal medium

Abstract

The invention provides a multichannel ultrasonic wave gathering installment which is used to examine the nonmetal medium, which includes crystal oscillator, photo electricity encoder, data acquisition controller and n single channel ultrasonic wave gathering unit. The crystal oscillator used to produce the vibration signal and transmit to the data acquisition controller; the photo electricity encoder is separately connected with n single channel ultrasonic wave gathering unit, produces the pulse under the single channel ultrasonic wave gathering unit impetus and transmits to the data acquisition controller; the data acquisition controller received the crystal oscillator outputs vibration signal and the photo electricity encoder output pulse signal, do the oscillation signal frequency division and the pulse counts to produce the control signal and transmit to the single channel ultrasonic wave gathering unit; the single channel ultrasonic wave gathering unit receives data acquisition controller outputs control signal to start gathering the work. The characteristic of the invention are that it is easy to expand, quickly data acquisition speed, the small volume and the low system power loss.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection, in particular to a multi-channel ultrasonic acquisition device for detecting non-metallic media. The device is especially suitable for detecting non-metallic media such as concrete and rocks. Background technique [0002] The traditional ultrasonic signal acquisition device mainly includes a signal amplification circuit, an analog-to-digital conversion circuit, a memory, and a control circuit composed of discrete components. The integration and functional density of discrete devices are relatively low, so the operating frequency of the ultrasonic acquisition device constituted by them is limited, and the acquisition speed is limited. However, in the case where multi-channel acquisition is required, the data throughput increases proportionally with the increase of the number of channels, so the acquisition device composed of discrete components cannot be competent. Limited by the acq...

AI Technical Summary

Problems solved by technology

In the existing detection device, the three parts of height information judgment, ultrasonic acquisition and ultrasonic processing work in a serial manner, which greatly increases the time of a detection and limits the detection speed

Existing detection devices on the market only have one or two channels. In the case where multiple channels are required to collect in parallel, the existing devices cannot meet the demand

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