CN1504748A - Soniscope capable of circularly testing multiple hole full combination detection surface - Google Patents

Abstract

The present invention discloses a multiple span hole all combination tracing measurement sonogram for the rock engineering drilling method and the technical field of foundation pile burying pipe sound wave detection, wherein the apparatus has a multi-channel transmission and reception switching over device, which comprises n sound wave energy converter switch-in end, n sptt electricity relay switches, a n-to-1 analog electronic switch, a sound wave transmitter, a single chip machine and corresponding digital control signal end.

Description

The full combination in multispan hole follows survey formula sonic apparatus

Technical field

The present invention relates to the multispan hole acoustic detector in a kind of Geotechnical Engineering boring method and the foundation pile pipe laying method sonic detection technical field.

Background technology

In publication number is 2079657 utility model patent, mentioned the single-emission and double-receiving acoustic logging instrument that adopts in a kind of oil exploration drilling; In publication number is 85102018 patent of invention, mentioned a kind of complicated digital-storage acoustic instrument for rock testing that is provided with two above ultrasonic emitting receiving traps; In publication number is 85102580 patent of invention, relate to a kind of low-frequency sound wave instrument that can be used for engineering site test rock mass, the soil body, concrete bodies; International and domestic existing about striding the report of hole sonic test method and instrument and equipment in about document.In above-mentioned these disclosed technology, what adopted all is the sonic apparatus of single-shot list receipts or single-emission and double-receiving, because each acoustic wave transducer all is to be set to emission or receiving function regularly in test process, thereby then must finish several times and cause the repeatedly repetitive operation of lifting of transducer by detection faces when hole when test of striding of carrying out between porous, there is the deficiency of consistance difference between the efficient different detection faces tests low and that cause because of lifting gear mechanicalness error.

Summary of the invention

The purpose of this invention is to provide the full combination in a kind of multispan hole and follow survey formula acoustic detector, can be in the sonic detection of the multispan hole of Geotechnical Engineering and foundation pile by the function that transmits and receives of program control each acoustic wave transducer of switching, making full combination between each hole stride the hole detects and can finish at same elevation cyclic ordering, thereby make the test of each detection faces or fall in the operating process and to finish, have the advantage of the high and high conformity of efficient at the synchronous liter of primary transducer.

For achieving the above object, full combination follows and has adopted a hyperchannel emission in the survey formula sonic apparatus and received switching device shifter in above-mentioned multispan hole in the present invention, this device by n acoustic wave transducer incoming end, a n single-pole triple-throw (SPTT) relay switch, import the digital controlled signal end that n selects a simulant electronic switch, acoustic transmitter and interface microcontroller to export and form; The common port of n single-pole triple-throw (SPTT) relay switch is connected with the signal output part of acoustic wave transducer in n the transceiver hole respectively, its optional end 1 selects n input end of a simulant electronic switch to be connected with input n respectively, its optional end 2 is connected with ground wire respectively, its optional end 3 is connected with the high-voltage output end of acoustic transmitter respectively, the program control end of n single-pole triple-throw (SPTT) relay switch is connected with the corresponding digital signal end of interface microcontroller output respectively, input n selects the program control end of a simulant electronic switch to be connected with interface microcontroller corresponding digital signal end, its public output is connected with harvester with the multi channel signals amplification, and the transponder pulse control end of acoustic transmitter is connected with interface microcontroller corresponding digital signal end.

Description of drawings

The full combination in Fig. 1 multispan hole follows survey formula sonic apparatus structured flowchart

Emission of Fig. 2 hyperchannel and reception switching device shifter circuit theory diagrams

Fig. 3 multispan hole full combine detection face synoptic diagram

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.

As shown in Figure 1, the full combination in multispan hole of the present invention follows survey formula sonic apparatus by acoustic wave transducer incoming end S in n the transceiver hole ₁～S _n, hyperchannel emission with receive switching device shifter, multi channel signals amplification and harvester, acoustic transmitter and single-chip microcomputer, host computer composition; When n acoustic wave transducer under the mechanical lifting device is handled synchronism stability behind a certain elevation, host computer procedure carries out communication and control by RS-232 serial communication interface and single-chip microcomputer, single-chip microcomputer sends control code by output interface the hyperchannel emission is provided with receiving switching device shifter, and the steps in sequence that circulation is provided with is:

S ₁Emission, S ₂, S ₃S _nReceive;

S ₂Emission, S ₃, S ₄S _nReceive;

 

S _N-1Emission, Sn receives.

Final difference setting through n-1 time, forming between n per two borings of boring is that hole test emission is striden in the full combination of a detection record and reception concerns.Multi channel signals amplifies with harvester synchronouss working under single-chip microcomputer is program control with acoustic transmitter under reception is provided with in each different emission, successively the signal to each receiving transducer amplify, A/D conversion and data storage, and read through bus addressing by single-chip microcomputer after the time-history curves data of signal and to be delivered to host computer by serial communication interface RS-232 and to show and preserve; At each elevation, n hole records altogether ${\mathrm{<figure-callout\; id="2"\; label="C\; n"\; filenames="A0214776000071.png"\; state="\{\{state\}\}">C</figure-callout>}}_n^{}=n(n-1)/(1\&times;2)$ Bar sonic test time-history curves, by mechanical lifting gear n acoustic wave transducer is arranged in different measuring point elevations along borehole axial, can be respectively obtain the full combination record of each detection faces of distributing along elevation by above-mentioned circulation setting and emission, signal acquisition process, final only at disposable liter or fall the sonic detection task of having finished the full combination in multispan hole in the operating process.

In Fig. 2, select a simulant electronic switch, an acoustic transmitter and relevant digital controlled signal end to form a hyperchannel emission and reception switching device shifter by n single-pole triple-throw (SPTT) relay switch, an input n.K ₁, K ₂K _nBe the single-pole triple-throw (SPTT) relay switch, its common port respectively with acoustic wave transducer incoming end S ₁, S ₂S _nConnect K ₁～K _n Optional end 1 respectively with the input n select n input end of a simulant electronic switch to be connected so that input voltage signal V to be provided _I1～V _InK ₁～K ₂ Optional end 2 all be connected with ground wire, amplify and Acquisition Circuit thereby the high pressure that must select 2 ends to discharge over the ground earlier when switching between emission and accepting state under the relay switch control to avoid the transducer residual charge to form when the function of acoustic wave transducer damages signal; K ₁～K _n Optional end 3 all be connected acoustic transmitter high pressure output pulse V when relay switch is beaten to 3 ends with the high-voltage pulse output terminal of acoustic transmitter _HTo discharge and recharge to realize sound wave emissions selected acoustic wave transducer; K ₁～K _nControl code be respectively control signal Q by interface microcontroller output ₁Q ₀, Q ₃Q ₂Q _2n-1Q _2n-2, Single Chip Microcomputer (SCM) program matches to K with host computer procedure ₁～K _nBy above-mentioned circulation step is set thereby the loop test function that realizes the full combination in multispan hole is set.

In Fig. 3, n boring forms C altogether _n ²The individual hole detection faces of striding, its numbering is respectively:

1-2，1-3，1-4，…，1-n：

2-3，2-4，…，2-n；

  

(n-1)-n。

In the pipe laying sound wave transmission method of foundation pile detects, 4 pre-pipe layings generally commonly used, so get n=4, then total detection faces number is ${\mathrm{<figure-callout\; id="2"\; label="C\; n"\; filenames="A0214776000071.png"\; state="\{\{state\}\}">C</figure-callout>}}_n^{}=6,$ Shown in shade among the figure.

Because the present invention has adopted the hyperchannel emission and has received switching device shifter, can in the multispan hole of Geotechnical Engineering and foundation pile sound wave transmission method detect, realize the switching of each acoustic wave transducer emission and receiving function and stride the hole test in the full combination that same elevation cyclic ordering is finished between per two holes by host computer and Single Chip Microcomputer (SCM) program control, therefore each acoustic wave transducer only needs to carry out disposable synchronous liter or fall the test that operating process just can be finished the full combine detection face in multispan hole under mechanical lifting gear control, has improved the consistance of work efficiency and each detection faces record greatly.

Claims (2)

1. one kind by host computer and software control, the full combination in multispan hole that has acoustic wave transducer incoming end in a plurality of transceivers hole, hyperchannel emission and reception switching device shifter, multi channel signals amplification and harvester, acoustic transmitter and front end single-chip microcomputer follows survey formula sonic apparatus, it is characterized in that: have a hyperchannel emission in this equipment and receive switching device shifter, this device selects the digital controlled signal end of a simulant electronic switch, acoustic transmitter and interface microcontroller output to form by n acoustic wave transducer incoming end, a n single-pole triple-throw (SPTT) relay switch, input n; The common port of n single-pole triple-throw (SPTT) relay switch is connected with the signal output part of acoustic wave transducer in n the transceiver hole respectively, its optional end 1 selects n input end of a simulant electronic switch to be connected with input n respectively, its optional end 2 is connected with ground wire respectively, its optional end 3 is connected with the high-voltage output end of acoustic transmitter respectively, the program control end of n single-pole triple-throw (SPTT) relay switch is connected with the corresponding digital signal end of interface microcontroller output respectively, input n selects the program control end of a simulant electronic switch to be connected with interface microcontroller corresponding digital signal end, its public output is connected with harvester with the multi channel signals amplification, and the transponder pulse control end of acoustic transmitter is connected with interface microcontroller corresponding digital signal end.

2. the full combination in multispan according to claim 1 hole follows survey formula sonic apparatus, it is characterized in that: the full combination between n hole is striden hole sonic detection cyclic ordering under same elevation and is finished transceiver acoustic wave transducer S ₁～S _nKeeping the steps in sequence that circulation is provided with under the constant situation of elevation to be:

S ₁Emission, S ₂, S ₃S _nReceive;

S ₂Emission, S ₃, S ₄S _nReceive;

 

S _N-1Emission, S _nReceive.

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