RU184335U1 - PROBE FOR INSPECTION OF EXTENDED CONSTRUCTION STRUCTURES - Google Patents

Abstract

The utility model relates to the field of metrology, namely to the control of the defectiveness of large-sized building structures. A probe for inspecting extended building structures contains a metal case of a cylindrical shape, inside which a percussion device is fixed, at the base of which a metal plate is installed made of hardened steel, which is hit. An acoustic receiver and two differential amplifiers are mounted on the body of the percussion device. 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 the acoustic receiver are connected to an analog-to-digital converter. At the same time, the percussion device contains an inductance coil inside which a metal rod of hardened steel is freely placed. An acoustic receiver, an analog-to-digital converter and two differential amplifiers are mounted outside, on the body of the percussion device. The technical result is the possibility of examining structures with different hardness and surface roughness. 1 il.

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 in construction enterprises to determine defects in the structure of building elements.

Known probe for examination of extended building structures [RU 170097 U1, IPC G01D1 / 02 (2006.1), publ. 13.04.2017], selected as a prototype, containing a metal body of a cylindrical shape, inside which is mounted a percussion device, on which an acoustic receiver and two differential amplifiers are mounted. 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 the acoustic receiver are connected to an analog-to-digital converter.

However, the possibility of using this device is limited, since due to the surface destruction of the material of the building element in the impact zone, the characteristics of impacts are different.

Probe for inspection of extended building structures, as well as in the prototype, contains a metal case of cylindrical shape, inside which is mounted a percussion device, on which an acoustic receiver and two differential amplifiers are fixed, the first and second electrical receivers are connected to the first and second repeaters, respectively, which are connected to the first differential amplifier, the third and fourth electrical receivers, respectively, are connected to the third and fourth repeaters, which are connected With a second differential amplifier, a percussion device, a first and second differential amplifiers, and an acoustic receiver are connected to an analog-to-digital converter, the percussion device contains an inductance coil inside which a metal rod is freely placed.

According to the utility model, the percussion device comprises a cylindrical case within which a coil of inductance is fixed with a core of hardened steel inside. The lower end of the rod is made with the possibility of impact on one side of the plate of hardened steel, mounted in the lower end of the housing. The other side of the plate is designed to be placed on the surface of the inspected building structure. An acoustic receiver, an analog-to-digital converter and two differential amplifiers are mounted outside, on the body of the percussion device.

The proposed use of a metal plate allows you to normalize the strength and duration of impact, which does not lead to the destruction of the surface of the building structure material at the point of impact and allows you to inspect structures with different hardness and surface roughness.

FIG. 1 shows a functional diagram of the inventive remote probe for inspection of extended building structures.

The probe for inspection of extended building structures contains a metal case of a cylindrical shape, inside which is installed a shock device 1 (CU), on which an acoustic receiver 2 (AP) and two differential amplifiers 3 (DU1) and 4 (DU2) are fixed. The first differential amplifier 3 (DU1) is connected to the first repeater 5 (P1), which is connected to the first electrical receiver 6 (EP1). The first differential amplifier 3 (DU1) is connected to the second repeater 7 (P2), which is connected to the second electric receiver 8 (EP2). The second differential amplifier 4 (DN2) is connected to the third and fourth repeaters 9 (P3) and 10 (P4), which are respectively connected with the third and fourth electrical receivers 11 (EP3) and 12 (EP4). Amplifier 1, differential amplifiers 3 (DU1) and 4 (DU2), and an acoustic receiver 2 (AP) are connected to the analog-digital converter 13 (ADC).

As a percussion device 1 (CU), an inductance coil with an inside percussion element made of hardened steel is used. A metal plate 14 (MP) is fixed in the base of the percussion device 1 (CU). The metal plate and the core of the percussion device are made of hardened steel 10X17H13M12, GOST 5632 or equivalent.

As an acoustic receiver 2 (AP), you can use a transducer based on piezoelectric ceramics PZT-19 or similar. Differential amplifiers 3 (DU1) and 4 (DU2) 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 the typical elements 140UD12, or similar. As electrical receivers 6 (EP1), 8 (EP2), 11 (EP3), 12 (EP4), plane-parallel air capacitors can be used. As an analog-to-digital converter 13 (ADC), the 32F429IDISCOVERY module or any signal processor can be used.

With the help of software running on a computer developed in the LabView programming environment, the voltage level applied to the impactor 1 (CU) is set. This information is transmitted to the analog-to-digital converter 13 (ADC), a strike is made on the metal plate 14 (MP), and the energy of the shock excitation is transmitted to the object being examined, for example, an element of a building structure. Acoustic and electrical signals are received by an acoustic receiver 2 (AP) and electric receivers 6 (EP1), 8 (EP2), 11 (EP3), 12 (EP4), from which they arrive at the corresponding repeaters 5 (P1), 7 (P2), 9 (A3). 10 (P4), and then on differential amplifiers 3 (DU1) and 4 (DU2). The signals from the differential amplifiers 3 (DU1), 4 (DU2) and acoustic receiver 2 (AP) are fed to the input of the analog-to-digital converter 13 (ADC).

Claims (1)

A probe for inspecting extended building structures containing a cylindrical metal body 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 the fourth electrical receivers are respectively connected to the third and fourth repeaters, which are connected to the second differential A special amplifier, a percussion device, first and second differential amplifiers and an acoustic receiver are connected to an analog-to-digital converter, the percussion device contains an inductance coil inside which a metal rod is freely placed, characterized in that the percussion device contains a cylindrical case inside which the coil is inductance housed with a core of hardened steel, the end of the rod is designed to strike one side of the plate of hardened steel, fixed at the end of the case, while the other side of the plate is designed to be placed on the surface of the inspected building structure, an acoustic receiver, an analog-to-digital converter and two differential amplifiers mounted outside, on the body of the percussion device.

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