Non-contact stroke measuring equipment

Abstract

The utility model relates to the technical field of tunnel defect detection equipment, in particular to non-contact stroke measurement equipment. The device comprises an upper cover plate, a left side plate, a right side cover, a lower cover plate, a light transmitting sheet, a central control circuit board, an optical flow sensor module, an ultrasonic range finder and a light supplementing lamp strip. The non-contact stroke measuring device is an innovative mobile stroke measuring device which performs dynamic stroke measurement by fusing image data and ultrasonic data. The optical sensor is used for monitoring the dynamic change of a specific image in the environment, the ultrasonic sensor is combined for measuring the distance between an object and equipment, and the moving stroke is accurately calculated in real time. According to the utility model, the problem of inaccurate data caused by the problems of self-problems of the roller, separation of the radar and the roller distance measuring device, uneven contact points and the like when the roller distance measuring device separated from the radar is adopted to detect the running distance of the radar in the tunnel in the measurement process of the existing geological radar method is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel defect detection equipment, in particular to a non-contact travel measurement device. Background Art

[0002] With the vigorous development of the highway transportation industry, the number of highway tunnel projects is increasing continuously. However, due to the influence of terrain, geology, climate conditions, and various factors in the design and construction process, tunnels will have different degrees of diseases during the construction process and even during the later use. If these diseases are not detected and treated in time, it will pose a serious threat to the safe operation of the tunnel. At present, the better way to inspect tunnel defects is to use the ground penetrating radar method for detection. The ground penetrating radar method is a non-destructive detection method based on the principle of electromagnetic wave reflection. When an electromagnetic wave propagates in a medium, its path, electromagnetic field strength, and waveform will change with the electrical properties and geometric shapes of the medium passed through. Therefore, according to the waveform data such as the propagation time (double-layer travel time), amplitude, and phase of the electromagnetic wave received by the receiving antenna, the spatial position, morphological structure, and other parameters of the detected target can be inferred. When applying the ground penetrating radar to detect the quality of tunnel lining, the transmitting and receiving antennas of the ground penetrating radar are placed on the surface of the tunnel lining. When the radar electromagnetic wave encounters different media such as concrete, steel bars, the interface between the primary lining and the secondary lining, the interface between the concrete and the surrounding rock mass of the tunnel, and the lining backfill grouting body during the propagation process, different electromagnetic wave reflection characteristics will be generated. By analyzing the waveform propagation characteristics of the electromagnetic wave in the above media, the lining thickness and steel bar spacing can be accurately measured, and the void, cavity, and backfill grouting density of the lining can be understood, etc.

[0003] In the existing process of measuring with the ground penetrating radar method, the radar is placed on a vehicle or other device for on-vehicle detection. At the same time, a roller ranging device separated from the radar detects the distance that the radar travels in the tunnel, and judges the position where the radar detects through the distance, and then locates the defect position. For example: a Chinese invention patent with the publication number CN113295121A and the name of hand-pushed roller rangefinder, hand-pushed roller rangefinder monitoring device and ranging system; a Chinese utility model patent with the publication number CN208125165U and the invention name of a roller rangefinder; a Chinese utility model patent with the publication number CN218443812U and the invention name of a roller rangefinder convenient for parking; a Chinese utility model patent with the publication number CN220552464U and the invention name of a roller rangefinder with a roller calibration function.

[0004] This kind of method causes inaccurate data due to problems such as the problems of the roller itself, the separation of the radar and the roller ranging device, and the uneven contact points.

[0005] Therefore, it is necessary to provide a non-contact stroke measurement device that can be fixed to a radar and whose measurement accuracy will not be affected by mechanical problems of the rollers themselves, uneven contact surfaces, etc. Summary of the Invention

[0006] The technical problem to be solved by the present utility model is, in view of the above-mentioned existing technical deficiencies, to provide a non-contact stroke measurement device, which is an innovative mobile stroke measurement device that performs dynamic stroke measurement by integrating image data and ultrasonic data. It uses an optical sensor to monitor the dynamic changes of specific images in the environment, combines an ultrasonic sensor to measure the distance between an object and the device, and calculates the moving stroke accurately and in real time.

[0007] To solve the above technical problem, the technical solution adopted by the present utility model is: a non-contact stroke measurement device, including an upper cover plate, a left side plate, a right side cover, a lower cover plate, a light-transmitting sheet, a central control circuit board, an optical flow sensor module, an ultrasonic rangefinder, and a supplementary light strip; inside the lower cover plate, there are a first mounting hole and a second mounting hole, both of which penetrate the lower cover plate; the ultrasonic rangefinder is arranged in the first mounting hole, and the ranging end of the ultrasonic rangefinder faces outside the lower cover plate; the optical flow sensor module is arranged in the second mounting hole, and the light signal receiving end of the optical flow sensor module faces outside the lower cover plate, and the light-transmitting sheet is arranged at the bottom of the first mounting hole and on top of the light signal receiving end of the optical flow sensor module; the left and right sides of the lower cover plate are trapezoidal; the left side plate and the right side cover both have trapezoidal bayonets that match the sides of the lower cover plate, and the trapezoidal bayonets clamp the lower cover plate; there are screw holes on the upper cover plate, the left side plate, the right side cover, and the lower cover plate, and the upper cover plate, the left side plate, the right side cover, and the lower cover plate are fixed with screws through the screw holes; the supplementary light strip is installed outside the lower cover plate; the optical flow sensor module, the ultrasonic rangefinder, and the supplementary light strip are electrically connected to the central control circuit board and are powered by a power supply connected to a wire jack; the central control circuit board is powered by a power supply connected to a wire jack and communicates externally through a signal wire jack.

[0008] In a further optimized technical solution, two wire holes are provided on the upper cover plate, and the wire jack and the signal wire jack are fixed in the wire holes.

[0009] In a further optimized technical solution, an annular groove is provided on the surface of the lower cover plate that contacts the upper cover plate, and a strip-shaped waterproof strip is arranged in the annular groove; a sheet-shaped waterproof strip is arranged between the lower cover plate and the upper cover plate.

[0010] In a further optimized technical solution, U-shaped bayonets are provided on both the left side plate and the right side cover; the supplementary light strip includes a first light strip and a second light strip, and the first light strip and the second light strip are fixed outside the lower cover plate through the U-shaped bayonets on the left side plate and the right side cover.

[0011] For a further optimized technical solution, a heat dissipation strip is provided at the top of the supplementary light strip, and the heat dissipation strip is fixed through U-shaped bayonets on the left side plate and the right side cover; the heat dissipation strip includes a first heat dissipation strip and a second heat dissipation strip.

[0012] The working principle of the present utility model is as follows: This device can be directly connected to the ground penetrating radar host as an external device and can replace a conventional ranging wheel to trigger data acquisition; it can also be directly connected to the upper computer to trigger data acquisition within the acquisition software. By using an optical flow sensor to monitor the dynamic changes of specific images in the environment and combining with an ultrasonic sensor to measure the distance between the object and the device, the moving distance is calculated accurately and in real time.

[0013] Compared with the prior art, the present utility model has the following advantages: 1. Compared with the traditional ranging wheel, the non-contact distance measurement device provided by the present utility model is not restricted by ground conditions, does not need to contact the ground, can maintain high precision under various terrains, and breaks through the physical limitations of the traditional wheel measurement method. 2. Its characteristics of high precision, real-time performance, and non-contact solve the problem that is easily affected by terrain during current wheel measurement, avoid the condition that the ranging device must contact the detection surface during current wheel measurement, and only need to be installed on a vehicle or device to perform measurement, avoiding the limitations and safety hazards brought by contact. 3. This device has high measurement precision, lightweight equipment, and wide applicability, providing a reliable measurement solution for the field of mobile distance measurement. 4. This device is an innovative mobile distance measurement device that performs dynamic distance measurement by integrating image data and ultrasonic data. 5. Compared with the traditional ranging wheel, the non-contact distance measurement device is not restricted by ground conditions, does not need to contact the ground, can maintain high precision under various terrains, and breaks through the physical limitations of the traditional wheel measurement method. Its characteristics of high precision, real-time performance, and non-contact solve the problem that is easily affected by terrain during current wheel measurement, avoid the condition that the ranging device must contact the detection surface during current wheel measurement, and only need to be installed on a vehicle or device to perform measurement, avoiding the limitations and safety hazards brought by contact. 6. This device can be directly connected to the ground penetrating radar host as an external device and can replace a conventional ranging wheel to trigger data acquisition; it can also be directly connected to the upper computer to trigger data acquisition within the acquisition software. 7. This device has high measurement precision, lightweight equipment, and wide applicability, providing a reliable measurement solution for the field of mobile distance measurement. Brief Description of the Drawings

[0014] Figure 1 It is an exploded axonometric view of the present utility model.

[0015] Figure 2 It is a cross-sectional view of the present utility model.

[0016] Figure 3 It is an obliquely downward cross-sectional view of the present utility model.

[0017] Figure 4This is the bottom view of the present utility model.

[0018] Figures 5 to 6 These are the views of the present utility model from different angles.

[0019] In the figure, each reference numeral represents in sequence: wire jack 1, signal line jack 2, upper cover plate 3, left side plate 4, right side cover 5, lower cover plate 6, first heat dissipation strip 7, first light strip 8, light-transmitting sheet 9, second light strip 10, second heat dissipation strip 11, central control circuit board 12, optical flow sensor module 13, ultrasonic rangefinder 14, sheet-shaped waterproof strip 15, strip-shaped waterproof strip 16, first mounting hole 17, second mounting hole 18, wire hole 19. Specific embodiments

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0021] Specific embodiment one: In combination with Figures 1 - 6As shown in the figure, a non-contact stroke measurement device includes an upper cover plate (3), a left side plate (4), a right side cover (5), a lower cover plate (6), a light-transmitting sheet (9), a central control circuit board (12), an optical flow sensor module (13), an ultrasonic rangefinder (14), and a supplementary light strip; inside the lower cover plate (6), there are a first mounting hole (17) and a second mounting hole (18), and both the first mounting hole (17) and the second mounting hole (18) penetrate through the lower cover plate (6); the ultrasonic rangefinder (14) is arranged in the first mounting hole (17), and the ranging end of the ultrasonic rangefinder (14) faces the outside of the lower cover plate (6); the optical flow sensor module (13) is arranged in the second mounting hole (18), and the optical signal receiving end of the optical flow sensor module (13) faces the outside of the lower cover plate (6), and the light-transmitting sheet (9) is arranged at the bottom of the first mounting hole (17) and on the top of the optical signal receiving end of the optical flow sensor module (13); the left and right sides of the lower cover plate (6) are trapezoidal; both the left side plate (4) and the right side cover (5) have trapezoidal bayonets that match the sides of the lower cover plate (6), and the trapezoidal bayonets clamp the lower cover plate (6); there are screw holes on the upper cover plate (3), the left side plate (4), the right side cover (5), and the lower cover plate (6), and the upper cover plate (3), the left side plate (4), the right side cover (5), and the lower cover plate (6) are fixed with screws through the screw holes; the supplementary light strip is installed on the outside of the lower cover plate (6); the optical flow sensor module (13), the ultrasonic rangefinder (14), and the supplementary light strip are electrically connected to the central control circuit board (12) and are powered by a power supply connected to the wire jack (1); the central control circuit board (12) is powered by a power supply connected to the wire jack (1) and communicates externally through the signal line jack (2).

[0022] Specific Embodiment 2: Combining Figures 1 - 6 As shown in the figure, on the basis of Embodiment 1, a further optimized technical solution is that two wire holes (19) are provided on the upper cover plate (3), and the wire jack (1) and the signal line jack (2) are fixed in the wire holes (19).

[0023] Specific Embodiment 3: Combining Figures 1 - 6 As shown in the figure, on the basis of any of the above embodiments, a further optimized technical solution is that a circular groove is provided on the surface of the lower cover plate (6) in contact with the upper cover plate (3), and a strip-shaped waterproof strip (16) is arranged in the circular groove; a sheet-shaped waterproof strip (15) is arranged between the lower cover plate (6) and the upper cover plate (3).

[0024] Specific Embodiment 4: Combining Figures 1 - 6As shown, based on any of the above embodiments, a further optimized technical solution is that U-shaped bayonets are provided on both the left side plate (4) and the right side cover (5); the supplementary light strip includes a first light strip (8) and a second light strip (10), and the first light strip (8) and the second light strip (10) are fixed to the outside of the lower cover plate (6) through the U-shaped bayonets on the left side plate (4) and the right side cover (5).

[0025] Specific Embodiment Five: In combination with Figures 1 - 6 As shown, based on Embodiment Four above, a further optimized technical solution is that a heat dissipation strip is provided on the top of the supplementary light strip, and the heat dissipation strip is fixed through the U-shaped bayonets on the left side plate (4) and the right side cover (5); the heat dissipation strip includes a first heat dissipation strip (7) and a second heat dissipation strip (11).

[0026] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A non-contact travel measuring device, characterized in that: The invention comprises an upper cover plate (3), a left side plate (4), a right side cover (5), a lower cover plate (6), a light-transmitting sheet (9), a central control circuit board (12), an optical flow sensor module (13), an ultrasonic rangefinder (14), and a fill light strip; a first mounting hole (17) and a second mounting hole (18) are arranged inside the lower cover plate (6), and both the first mounting hole (17) and the second mounting hole (18) pass through the lower cover plate (6); the ultrasonic rangefinder (14) is arranged in the first mounting hole (17), and the distance measuring end of the ultrasonic rangefinder (14) faces the outside of the lower cover plate (6); the optical flow sensor module (13) is arranged in the second mounting hole (18), and the optical signal receiving end of the optical flow sensor module (13) faces the outside of the lower cover plate (6); the light-transmitting sheet (9) is arranged at the bottom of the first mounting hole (17), and the optical flow sensor module (1 3) on the top of the optical signal receiving end; the left and right sides of the lower cover (6) are both trapezoidal; the left side plate (4) and the right side cover (5) are both provided with trapezoidal bayonet holes matching the side of the lower cover (6), and the trapezoidal bayonet holes clamp the lower cover (6); screw holes are provided on the upper cover (3), the left side plate (4), the right side cover (5), and the lower cover (6), and the upper cover (3), the left side plate (4), the right side cover (5), and the lower cover (6) are fixed by screws through the screw holes; the fill light strip is installed on the outer side of the lower cover (6); the optical flow sensor module (13), the ultrasonic rangefinder (14), and the fill light strip are electrically connected to the central control circuit board (12), and are powered by a power supply connected to the wire jack (1); the central control circuit board (12) is powered by a power supply connected to the wire jack (1), and communicates with the outside through the signal line jack (2).

2. A non-contact travel measurement device according to claim 1, characterized in that: The upper cover plate (3) is provided with two wire holes (19), and the wire plug hole (1) and the signal wire plug hole (2) are fixed in the wire holes (19).

3. A non-contact travel measurement device according to claim 1, characterized in that: An annular groove is provided on the contact surface of the lower cover plate (6) and the upper cover plate (3), and a strip-shaped waterproof strip (16) is provided in the annular groove; a sheet-shaped waterproof strip (15) is provided between the lower cover plate (6) and the upper cover plate (3).

4. A non-contact travel measurement device according to claim 1, characterized in that: The left side plate (4) and the right side cover (5) are both provided with U-shaped bayonet holes; the fill light strip comprises a first light strip (8) and a second light strip (10); the first light strip (8) and the second light strip (10) are fixed to the outer side of the lower cover plate (6) through the U-shaped bayonet holes on the left side plate (4) and the right side cover (5).

5. A non-contact travel measurement device according to claim 4, characterized in that: A heat dissipation strip is arranged on the top of the fill light strip, and the heat dissipation strip is fixed by means of a U-shaped bayonet on the left side plate (4) and the right side cover (5); the heat dissipation strip comprises a first heat dissipation strip (7) and a second heat dissipation strip (11).

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