RU170097U1 - PROBE FOR EXAMINATION OF EXTENDED CONSTRUCTION STRUCTURES - Google Patents

Abstract

The utility model relates to metrology, in particular, to the field of non-destructive quality control. The probe for examining extended building structures contains a cylindrical metal case, inside which a percussion device is fixed, on which an acoustic receiver and two differential amplifiers are fixed. The first and second electrical receivers are respectively connected to the first and second repeaters, which are connected to the first differential amplifier. The third and fourth electrical receivers are respectively connected to the third and fourth repeaters, which are connected to the second differential amplifier. The shock device, the first and second differential amplifiers and an acoustic receiver are connected to an analog-to-digital converter. The device is configured to set the voltage level supplied to the percussion device. The acoustic receiver is made of piezomaterial, and capacitive receivers are plane-parallel air condensers. The shock device is made in the form of an inductor with a shock rod inside. The technical result is an increase in noise immunity. 1 ill.

Description

The utility model relates to the field of non-destructive quality control, namely to control the defectiveness of large-sized building structures and can be used at construction enterprises to identify structural defects in building elements.

A known probe for examining extended building structures [RU 158773 U1, IPC G01D 1/02 (2006.1), publ. 01/20/2016], selected as a prototype, containing a metal housing of cylindrical shape, inside which a percussion device is fixed, on which an acoustic receiver and two differential amplifiers are fixed. The first and second electrical receivers are respectively connected to the first and second repeaters, which are connected to the first differential amplifier. The third and fourth electrical receivers are respectively connected to the third and fourth repeaters, which are connected to the second differential amplifier. The shock device, differential amplifiers, and an acoustic receiver are connected to a connector fixed to the housing for connecting a cable to the multi-function I / O board of the computer’s PCI slot.

The ability to use this device is limited due to the high level of interference when using long signal cables.

The proposed probe for examining long building structures, as in the prototype, contains a cylindrical metal case, inside which a percussion device is fixed, on which an acoustic receiver and two differential amplifiers are fixed, the first and second electric receivers are respectively connected to the first and second repeaters, which are connected with the first differential amplifier, the third and fourth electrical receivers are respectively connected to the third and fourth repeaters, which are connected to a second differential amplifier.

According to a utility model, an impact device, the first and second differential amplifiers and an acoustic receiver are connected to an analog-to-digital converter.

Connecting the internal elements of the probe immediately directly to the inputs of the analog-to-digital converter allows you to reduce the level of interference to the signal when scanning large-sized building structures, freely moving the probe during the examination over long distances.

In FIG. 1 presents a functional diagram of the inventive remote probe for the examination of long building structures.

The probe for examining extended building structures contains a cylindrical metal case, inside which an impact device 1 (UE) is mounted, on which an acoustic receiver 2 (AP) and two differential amplifiers 3 (DU1) and 4 (DU2) are mounted. The first differential amplifier 3 (DU1) is connected to the first repeater 5 (P1), which is connected to the first electric receiver 6 (EP1). The first differential amplifier 3 (ДУ1) is connected to the second repeater 7 (П2), which is connected to the second electric receiver 8 (ЭП2). The second differential amplifier 4 (ДУ2) is connected with the third and fourth repeaters 9 (П3) and 10 (П4), which are respectively connected with the third and fourth electric receivers 11 (ЭП3) and 12 (ЭП4).

An analog-to-digital converter 13 (ADC) is connected to an impact device 1, differential amplifiers 3 (ДУ1) and 4 (ДУ2), and an acoustic receiver 2 (АП).

As an impact device 1 (UE), an inductance coil with an inside shock element, a metal rod, can be used.

As an acoustic receiver 2 (AP), you can use a transducer based on piezoelectric ceramics TsTS-19 or similar.

Differential amplifiers 3 (ДУ1) and 4 (ДУ2) can be made on the basis of a typical element AD8032 or similar.

Repeaters 5 (P1), 7 (P2), 9 (P3), 10 (P4) can be made on the basis of standard elements 140UD12, or similar

Plane-parallel air capacitors can be used as electric receivers 6 (EP1), 8 (EP2), 11 (EP3), 12 (EP4).

As an analog-to-digital converter 13 (ADC), the 32F429IDISCOVERY module or any signal processor can be used.

Using the software running on the computer, developed in the LabView programming environment, the voltage level is supplied to the shock device 1 (UE), and this information is transmitted to the analog-to-digital converter 13 (ADC), and shock excitation of an object, for example, a building element designs. Acoustic and electrical signals are received by acoustic receiver 2 (AP) and electrical receivers 6 (EP1), 8 (EP2), 11 (EP3), 12 (EP4), from which they are sent to the corresponding repeaters 5 (P1), 7 (P2), 9 (P3). 10 (П4), and then to differential amplifiers 3 (ДУ1) and 4 (ДУ2). The signals from differential amplifiers 3 (ДУ1), 4 (ДУ2) and acoustic receiver 2 (АП) are input to the analog-to-digital converter 13 (ADC), and transmitted to a computer for further processing and analysis.

Claims (1)

A probe for examining extended building structures, comprising a cylindrical metal case, inside which a percussion device is mounted, on which an acoustic receiver and two differential amplifiers are fixed, the first and second electric receivers are respectively connected to the first and second repeaters that are connected to the first differential amplifier, the third and the fourth electrical receivers are respectively connected to the third and fourth repeaters, which are connected to the second differential a personal amplifier, characterized in that the percussion device, the first and second differential amplifiers and the acoustic receiver are connected to an analog-to-digital converter.

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