Highly sensitive sensing device for concrete crack detection

Abstract

The invention relates to a highly sensitive sensing device for concrete crack detection, which comprises a sleeve, a spring housing, a sensor body, and a sensing probe. The front end of the sleeve isprovided with receiving disks, and the rear end of the sleeve is provided with an openable end cap. The spring housing is provided in the sleeve. The sensor body is mounted in the spring housing inside the sleeve, and the top thereof is provided with an annular protrusion around outer walls. The bottom of the spring housing is in contact with the top of the spring housing, and the bottom of the spring housing is fixedly connected to the end cap. The receiving disk is in the shape of a bowl. The device is further provided with a receiving plate opening and closing device. The opening and closing device comprises a knob seat mounted on the sleeve, a knob mounted on the top of the knob seat, a fixed pulley set mounted on the sleeve and symmetrically on each side of the knob, and a lead wire set connected to the top edge of the receiving disk and passing through the fixed pulley set to the edges of the two sides of the knob. The device can control the length of the lead wires by the knob,thereby changing the opening and closing state of the receiving disks, so that the detecting signal is more effectively received to the sensing probe.

Description

technical field [0001] The invention relates to a sensor, especially a high-sensitivity sensor device for cement crack detection. Background technique [0002] A sensor is a detection device that can sense the measured information, and can transform the sensed information into electrical signals or other required forms of information output according to certain rules, so as to meet the needs of information transmission, processing, storage, and display. , recording and control requirements. Sensors are the primary link to realize automatic detection and automatic control. [0003] At present, the harm caused by the inhomogeneity of the material has long attracted the attention and attention of experts in the field, but in terms of detection means, in the prior art, only one detection of the uniformity of the material surface composition based on optical methods has been invented. However, this kind of optical detection is a destructive detection method. Before the detectio...

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Problems solved by technology

[0003] At present, the harm caused by the inhomogeneity of the material has long attracted the attention and attention of experts in the field, but in terms of detection means, in the prior art, only one detection of the uniformity of the material surface composition based on optical methods has been invented. However, this kind of optical detection is a destructive detection method. Before the detection, the surface of the metal material to be detected needs to be polished. This detection method only detects the composition uniformity of the surface, and it is difficult to determine its mechanical properties. and crack detection and evaluation

[0004] In the prior art, once a crack is found in the metal material of the part, the sensor detects the crack in time, and then transmits the detected information to the computer through the probe, so that the staff cannot be notified in time, so that the occurrence The timely investigation of cracked parts and materials will bring additional burden to the work of the staff, and it will easily lead to the application of such unqualified auto parts to specific equipment, causing unnecessary damage

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