RU2609746C2 - Onset of building structures parts displacement monitoring device - Google Patents

Abstract

FIELD: measuring equipment.

SUBSTANCE: invention relates to instrumentation and can be used in onset of building structures displacements relative to each other determining devices. Onset of building structures parts displacements monitoring device, including laser, reflecting mirrors, fixed on building structure controlled parts, correcting reflector, parallel located mirrors, focusing lens, light-sensitive matrix, analogue-to-digital converter, computer, wherein onset of building structures parts displacement sensitive element is system of mirrors and light-sensitive matrix, change of mutual location of any system component leads to change position of light spot on light-sensitive matrix, which testifies of change in structure controlled parts spatial position.

EFFECT: determining occurrence of building structures relative displacement.

1 cl, 1 dwg

Description

The invention relates to the field of instrumentation and can be used in devices for determining the occurrence of displacements of structures of a structure relative to each other. One of the possible applications may be an alarm about the appearance of a change in the mutual spatial arrangement of parts of the structures of the structure.

A device for monitoring the state of structures of a building or engineering construction [1], containing a control point, a computer, measuring transducers installed in the places of diagnosis of the structure, analog-to-digital converter (ADC), hydraulic levels with floats, digital-to-analog converter (DAC), the interface unit and a computer communication unit with a local computer network and the Internet. Measuring transducers that record vertical displacements are connected to floats of hydraulic levels and are made in the form of inductive sensors, the outputs of which are connected to the inputs of the interface unit. The control input of the interface unit is connected to the output of the DAC, and the address input is connected to the computer. The computer has two bi-directional buses, one of which is connected to the ADC, and the second to the DAC, and three unidirectional buses, one of which is the address bus of the interface unit, the second is connected to the display, and the third is to the communication unit of the computer with the local computer network and The internet. The known device and the proposed use of a device for recording movement and a computer for processing information.

A disadvantage of the known device is that the known device uses measuring transducers that record vertical movements, which are electronic-mechanical devices, to ensure the operation of which it is necessary to lay wires that provide power and information transfer, which makes it difficult to create a wireless device to control the occurrence of movement of building structures, located in a remote location in difficult to reach places.

A known system for monitoring the state of cracks and joints of buildings and structures [2], containing a sensor - an indicator of the type of watch, supports on the surface of a building structure on different sides of the crack, a receiving radio module and a recording device are introduced, and a rechord and current collector, an analog-digital converter, a microcontroller are introduced transmitting radio module, chemical source of supply voltage, clock-alarm module. The known device and the proposed work remotely, without using wires to register and transmit a signal of movement.

A disadvantage of the known device is that to ensure its operation it is necessary to monitor the state of the chemical power source, when the voltage drops on the chemical power source, the system ceases to function.

The closest technical solution to the proposed device is a photoelectric method for measuring mechanical displacements [3], which is selected as a prototype. The known method is characterized in that they direct the light flux of the emitter through the optical system to a position-sensitive photodetector mounted on the object, the output signal of which judges the movements of the object, and differs in that, in order to improve the accuracy of measurements and eliminate amplitude-phase fluctuations in the light beam, form an optical system with a light beam with a cross section that provides a round light spot on the surface of a position-sensitive photodetector, direct it to a plane the photosensitive surface of the position sensitive photodetector at an angle at which the reflected beam does not get back into the emitter, the beam reflected from the surface of the position sensitive photodetector is directed to an additional photodetector, the output signal of which is used to account for the instability of the light flux intensity of the emitter.

A disadvantage of the known method is that: in the known method, in order to control the occurrence of movements in several parts of the structure as a system, it is necessary to use several light emitters and several position-sensitive photodetectors.

In the proposed device, using a narrow beam of radiation from the laser, which is successively reflected from the mirrors mounted on the controlled parts of the structures and the correction reflector, falls on the photosensitive matrix, the movement of the light spot on the photosensitive matrix indicates the occurrence of relative movements of the parts of the structure. In this case, the laser beam, sequentially reflected from the system of mirrors, can be aimed at structures placed in indirect visibility from the laser, which expands the capabilities of the monitoring system. The number of mirrors used in the control system is determined by the number of controlled parts of the structure, their location, the quality of the reflectivity of the mirrors and the laser radiation power. To increase the sensitivity of the device, an angular multiplier was used [4]. A lens was used to focus the light spot on the photosensitive matrix.

The objective of the invention is to provide a device that allows you to determine the occurrence of the relative displacement of the structures of the structure and to signal their occurrence.

The invention is illustrated by the following drawings.

The drawing shows a device for controlling the occurrence of movement of parts of the structures of the structure relative to each other.

The principle of operation of the device for controlling the occurrence of displacement of the structures of the structure relative to each other is as follows: installed on the first controlled part or on a fixed support, the laser 1 generates a beam of light 2, which, successively reflected from the mirrors 3, 4, 5 installed on the controlled parts of the structure, to the corrective reflector 6. Next, the light beam 2, repeatedly reflected from the mirrors 7 and 8, enters through the focusing lens 9 on the photosensitive matrix 10, an electrical analog signal from of the wind-sensitive matrix 10 is converted by an analog-to-digital converter 11 and fed to a computer 12. Determining whether there is a movement of a light spot from a laser beam on a photosensitive matrix means the appearance of a relative displacement of parts of the structure.

The advantage of the proposed device is:

- the ability to control the preservation of the relative position of a large number of parts of the structures of the structure relative to each other.

Literature

1. Patent RU 2482445, IPC G01B 7/16, G01M 5/00, 05.20.2013.

2. Patent RU 102035, IPC E04G 23/00, 02/10/2011.

3. Patent RU 2196300, IPC G01B 11/00, 01/10/2003.

4. Patent SU 135664, IPC G02B 5/08, G01B 11/26, G02B 27/30, 01/01/1961.

Claims (1)

1. A device for controlling the occurrence of movement of parts of structures of a structure, including a laser, reflective mirrors fixed on the controlled parts of the structure of a structure, a corrective reflector, parallel mirrors, a focusing lens, a photosensitive matrix, an analog-to-digital converter, a computer, characterized in that as a sensitive an element of the appearance of moving parts of the structure uses a system of mirrors and a photosensitive matrix, changing the relative position element of the system causes a change in position of the light spot on a photosensitive matrix, which indicates a change in the spatial position of controlled parts of the structure.

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