Intelligent steel bar protective layer detector
By introducing a path measurement module of an accelerometer and a gyroscope, the problem of inaccurate detection results of the reinforced bar protective layer detector in the prior art is solved, and automated path tracking and correction are realized, which improves detection accuracy and speed.
Patent Information
- Application Number
- CN202422524279.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-18
AI Technical Summary
When the existing steel bar protective layer detector is actually inspected on site, due to the insufficient directivity of the electromagnetic field, adjacent and orthogonal steel bars affect the test signal, resulting in inaccurate correction results. It is difficult to manually input the distance between the orthogonal steel bars to ensure that the scanning path is consistent with the center line of the orthogonal steel bars, resulting in large errors in the detection results.
The accelerometer and gyroscope are used as the path measurement module to measure the movement path information of the detector in real time, and the detection path of the measured steel bar is calculated through the processor. Combined with the feedback information of the path measurement module, it ensures that the detector moves along the set path and realizes accurate detection of orthogonal steel bars.
It improves the accuracy and speed of the detection results, automatically corrects the impact of adjacent steel bars, reduces manual intervention, and ensures the accuracy of the detection path.
Smart Images
Figure CN223154192U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building inspection and testing, in particular to an intelligent steel bar protective layer detector. Background Art
[0002] A steel bar protective layer detector is a detection instrument used to detect the position of steel bars, the diameter of steel bars and their protective layer thickness in concrete. Its technical principle is as follows: The instrument emits an electromagnetic field to a local area range inside the structure to be measured through a sensor, and at the same time receives the induced magnetic field generated by ferromagnetic media (steel bars) within the electromagnetic field coverage range, and converts it into an electrical signal. The host system analyzes and processes the digital electrical signal in real time and displays it in various ways such as graphics, numerical values, and prompt sounds, so as to accurately determine the position of the steel bars, the protective layer thickness, and the diameter of the steel bars.
[0003] Because the steel bar protective layer detector is based on the working principle of the electromagnetic field, and the electromagnetic field is distributed in a fan-shaped radiation without directivity, so during actual on-site detection, adjacent steel bars and orthogonal steel bars around the steel bar to be measured will affect the test electromagnetic field signal. Based on the above principle, the actually used steel bar protective layer detector must adopt an adjacent steel bar influence correction algorithm to obtain accurate test results.
[0004] The correction method generally uses the diameter, spacing, and protective layer thickness of adjacent steel bars as the main parameters to determine its influence degree, and then uses the correction algorithm to correct the test results. In the fast scanning mode, generally, the orthogonal steel bars are scanned first to determine their positions, spacings, and orientations, and then scanned at the middle position between the two orthogonal steel bars to obtain the position, spacing, and directly measured steel bar protective layer thickness of the steel bar to be measured. The instrument corrects the directly measured steel bar protective layer thickness value by using the correction algorithm according to the input orthogonal steel bar diameter, orthogonal steel bar spacing, the spacing of the steel bar to be measured, and the diameter of the steel bar to be measured. Currently, a fixed orthogonal steel bar spacing is generally used for correction.
[0005] The existing detection scheme not only requires manual input of the orthogonal steel bar spacing, but also the scanning path during measurement is very likely to be inconsistent with the ideal results in terms of the position and steel bar spacing of the orthogonal steel bars. During actual on-site detection, it is a common phenomenon that the steel bar orientations are not parallel. In addition, it is very difficult to ensure that the scanning path is in the middle line between two orthogonal steel bars. These two situations will both lead to inaccurate correction results. Summary of the Utility Model
[0006] The purpose of the utility model is to provide an intelligent steel bar protective layer detector to solve at least one of the above technical problems existing in the prior art.
[0007] To solve the above technical problems, an intelligent steel bar protective layer detector provided by the utility model includes: a host and a probe;
[0008] The host includes a processor, a storage module, and a path measurement module; the path measurement module is connected to the processor and is used to measure the moving path information of the detector in real time and feed back the moving path information to the processor; the storage module is connected to the processor and is used to store the moving path information;
[0009] The path measurement module includes: an accelerometer and a gyroscope;
[0010] The accelerometer is used to measure the acceleration of the detector in the three coordinate directions of X, Y, and Z, and then obtain the displacement information of the detector through integration; the gyroscope is used to measure the rotation angle, rotation rate, and direction of the detector.
[0011] This application creatively introduces path measurement modules such as an accelerometer and a gyroscope, which can implement the detection and recording of the moving path of the detector, that is, it can simultaneously detect and record the path information of two or even more orthogonal steel bars. The processor can calculate the detection path of the steel bar to be measured through the path information of the orthogonal steel bars. During detection, in cooperation with the feedback information of the path measurement module, the moving path moves along the set detection path, thereby ensuring the accuracy of the detection result and improving the detection speed at the same time.
[0012] Further, the storage module includes a first path storage unit, a second path storage unit, and a detection path storage unit; the first path storage unit is used to store the first moving path information fed back by the path measurement module; the second path storage unit is used to store the second moving path information fed back by the path measurement module; the detection path storage unit is used to store the detection path information calculated by the processor according to the first moving path information and the second moving path information.
[0013] During application, the first moving path information and the second moving path information respectively correspond to the position information of two adjacent orthogonal steel bars; before detecting the steel bar to be measured, the detector first detects two adjacent orthogonal steel bars. During the detection process, the path measurement module performs path tracking and records the position information of the two orthogonal steel bars through the storage module. The detection path is the middle position line of the two orthogonal steel bars.
[0014] Further, it further includes an alarm module, which is used to emit a warning signal during the detection process of the detector.
[0015] Further, the alarm module is a buzzer.
[0016] The buzzer emits a warning sound when the detection path of the detector deviates. Or it is used to emit a prompt sound when a steel bar is detected. The alarm module can also be an image processing module, which displays whether the detection path deviates in the form of an image through the display screen of the detector.
[0017] Further, it further includes a laser spotlight for indicating the detection path of the steel bar to be measured.
[0018] Further, the path measurement module further includes a geomagnetic instrument for measuring the absolute deflection angle of the detector.
[0019] Further, the path measurement module further includes a height sensor (such as a barometer) for detecting the moving height of the detector in the vertical direction relative to the reference position.
[0020] Further, the path measurement module further includes a laser rangefinder for measuring the distance from the detector to the reference position.
[0021] Preferably, the processor is a microcontroller unit (MCU), a CPU, or the like.
[0022] Further, it further includes a battery as a power source to supply power to the host and the path measurement module.
[0023] Further, an electromagnetic sensor is provided inside the probe, and the host includes: a transmitting module (or a transmitting circuit) and a receiving module (or a receiving circuit); the electromagnetic sensor is connected to the transmitting module and the receiving module, the transmitting module is used to excite the electromagnetic sensor to generate a stable alternating electromagnetic field; the receiving module detects the secondary electromagnetic field signal received by the receiving electromagnetic sensor.
[0024] Adopting the above technical solutions, the present utility model has the following beneficial effects:
[0025] An intelligent steel bar cover thickness detector provided by the present utility model creatively introduces a path measurement module such as an accelerometer and a gyroscope, which can implement the detection and recording of the moving path of the detector, that is, it can simultaneously detect and record the path information of two or even multiple orthogonal steel bars. The processor can calculate the detection path of the steel bar to be measured through the path information of the orthogonal steel bars. When detecting, it moves along the set detection path in cooperation with the feedback information of the path measurement module, thereby ensuring the accuracy of the detection result and improving the detection speed at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0027] Figure 1Structural schematic diagram of the detector provided by the embodiment of the present utility model;
[0028] Figure 2 Structural schematic diagram of another implementation manner of the detector;
[0029] Figure 3 Structural schematic diagram of the main unit;
[0030] Figure 4 Stereogram of the detector.
[0031] Reference numerals:
[0032] 10 - Main unit; 11 - Laser spotlight; 12 - Buzzer; 13 - Battery; 14 - Roller; 15 - Display screen. Specific implementation manners
[0033] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0035] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0036] The present utility model will be further explained and described below in conjunction with specific implementation manners.
[0037] As Figure 1 shown, an intelligent steel bar cover detector provided by this embodiment includes: a main unit and a probe.
[0038] The host includes a processor, a storage module, and a path measurement module; the path measurement module is connected to the processor and is configured to measure the moving path information of the detector in real time and feed back the moving path information to the processor; the storage module is connected to the processor and is used to store the moving path information; the path measurement module includes: an accelerometer and a gyroscope.
[0039] Among them, the accelerometer is used to measure the acceleration of the detector in the three coordinate directions of X, Y, and Z, and then the displacement information of the detector is obtained through integration; the gyroscope is used to measure the rotation angle, rotation rate, and direction of the detector.
[0040] Among them, the accelerometer preferably adopts a MEMS accelerometer sensor, and the gyroscope is a MEMS gyroscope. The two are combined to form a complete spatial positioning and spatial trajectory tracking module.
[0041] This application creatively introduces path measurement modules such as an accelerometer and a gyroscope, which can implement the detection and recording of the moving path of the detector, that is, it can simultaneously detect and record the path information of two or even more orthogonal steel bars. The processor can calculate the detection path of the steel bar to be measured through the path information of the orthogonal steel bars. During the detection, in cooperation with the feedback information of the path measurement module, the moving path moves along the set detection path, thereby ensuring the accuracy of the detection result and improving the detection speed at the same time.
[0042] In addition, the storage module includes a first path storage unit, a second path storage unit, and a detection path storage unit; the first path storage unit is used to store the first moving path information fed back by the path measurement module; the second path storage unit is used to store the second moving path information fed back by the path measurement module; the detection path storage unit is used to store the detection path information calculated by the processor according to the first moving path information and the second moving path information. During application, the first moving path information and the second moving path information respectively correspond to the position information of two adjacent orthogonal steel bars; before detecting the steel bar to be measured, the detector first detects two adjacent orthogonal steel bars. During the detection process, the path measurement module performs path tracking and records the position information of the two orthogonal steel bars through the storage module. The detection path is the middle position line of the two orthogonal steel bars.
[0043] See Figure 2As shown, based on the above technical solution, the path measurement module may further include a geomagnetometer for measuring the absolute deflection angle of the detector. And / or, the path measurement module may further include a height sensor (such as a barometer) for detecting the moving height of the detector relative to the reference position in the vertical direction. And optionally, the path measurement module may further include a laser rangefinder for measuring the distance from the detector to the reference position.
[0044] See also Figure 3 As shown, an electromagnetic sensor is arranged in the probe, and the main unit includes: a transmitting module (or transmitting circuit) and a receiving module (or receiving circuit); the electromagnetic sensor is connected with the transmitting module and the receiving module, the transmitting module is used to excite the electromagnetic sensor to generate a stable alternating electromagnetic field; the receiving module detects the secondary electromagnetic field signal received by the electromagnetic sensor.
[0045] Furthermore, it also includes an alarm module, which is used for the detector to send out a warning signal during the detection process. Figure 4 As shown, the alarm module preferably uses a buzzer 12. The buzzer 12 emits a warning sound when the detection path of the detector is offset. Or it is used to emit a prompt sound when a steel bar is detected. The alarm module can also be an image processing module, which displays whether the detection path is offset in the form of an image through the display screen of the detector.
[0046] More preferably, the host 10 of this embodiment also includes a laser spotlight 11, which is used to indicate the detection path (i.e., scanning path) of the steel bar to be tested. Based on the above technical solution, the trajectory and posture perception of the entire test process can be realized, so as to automatically obtain the position and direction of the orthogonal steel bars, automatically determine the coordinate position and direction of the scanning path, and then guide the detection personnel to perform scanning tests on the scanning path through sound and light signals, and automatically calculate the spacing between the steel bar to be tested and the adjacent steel bars and orthogonal steel bars, so as to achieve accurate automatic correction. Preferably, the processor is a microcontroller unit (MCU) or a CPU, etc. This embodiment also includes a battery 13, which serves as a power source to power the host 10 and the path measurement module of the detector. Among them, a roller 14 is set at the bottom of the host 10 to facilitate walking along the concrete surface. The display screen 15 of the host 10 preferably adopts a liquid crystal touch screen, which is convenient for human-computer interaction.
[0047] The utility model creatively introduces path measurement modules such as accelerometers and gyroscopes, which can detect and record the moving path of the detector, that is, it can simultaneously detect and record the path information of two or even more orthogonal steel bars. The processor can calculate the detection path of the tested steel bars through the path information of the orthogonal steel bars. During detection, the feedback information of the path measurement module is coordinated, and the moving path moves along the set detection path, thereby ensuring the accuracy of the detection result and improving the detection speed.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An intelligent steel bar cover detector, characterized in that, Including: a main unit and a probe; The main unit includes a processor, a storage module, and a path measurement module; the path measurement module is connected to the processor and is used to measure the moving path information of the detector in real time and feed the moving path information back to the processor; The storage module is connected to the processor and is used to store the moving path information; The path measurement module includes: an accelerometer and a gyroscope; The accelerometer is used to measure the accelerations of the detector in the X, Y, and Z coordinate directions, and then obtain the displacement information of the detector through integration; the gyroscope is used to measure the rotation angle, rotation rate, and direction of the detector.
2. The intelligent steel bar cover thickness detector according to claim 1, wherein The storage module includes a first path storage unit, a second path storage unit, and a detection path storage unit; the first path storage unit is used to store the first moving path information fed back by the path measurement module; the second path storage unit is used to store the second moving path information fed back by the path measurement module; The detection path storage unit is used to store the detection path information calculated by the processor based on the first moving path information and the second moving path information.
3. The intelligent steel bar cover detector according to claim 1, characterized in that, It further includes an alarm module, which is used to emit a warning signal during the detection process of the detector.
4. The intelligent steel bar cover thickness detector according to claim 3, wherein The alarm module is a buzzer.
5. The intelligent steel bar cover thickness detector according to claim 1, wherein, The path measurement module further includes a geomagnetic instrument, which is used to measure the absolute deflection angle of the detector.
6. The intelligent steel bar cover thickness detector according to claim 1, characterized in that The path measurement module further includes a height sensor, which is used to detect the moving height of the detector in the vertical direction relative to a reference position.
7. The intelligent steel bar cover thickness detector according to claim 1, wherein The path measurement module further includes a laser rangefinder, which is used to measure the distance from the detector to the reference position.
8. The intelligent steel bar cover thickness detector according to claim 1, characterized in that, The processor is a microcontroller unit or a CPU.
9. The intelligent steel bar cover detector according to claim 2, characterized in that, It further includes a laser spotlight, which is used to indicate the detection path of the steel bar to be measured.
10. The intelligent steel bar cover thickness detector according to claim 1, wherein, An electromagnetic sensor is arranged inside the probe, and the main unit includes: a transmitting module and a receiving module; the electromagnetic sensor is connected to the transmitting module and the receiving module, the transmitting module is used to excite the electromagnetic sensor to generate a stable alternating electromagnetic field; the receiving module detects the secondary electromagnetic field signal received by the receiving electromagnetic sensor.