Floor thickness detector for building construction

Abstract

The utility model relates to the technical field of building construction, and discloses a floor thickness detector for building construction, which comprises a shell, one side of the shell is in threaded connection with a detection rod assembly, one end of the detection rod assembly far away from the shell is provided with a magneto-dependent sensor, and one side of the shell far away from the detection rod assembly is provided with a touch screen. A switch button and an external interface are arranged on the outer wall of the shell, a PCB is arranged in the shell, a power module, a processor and a signal amplification circuit are installed on the PCB, and the magneto-dependent sensor is electrically connected with the signal amplification circuit. According to the floor thickness detector, the floor thickness is calculated through the shell, the PCB, the switch button, the detection rod assembly, the external interface, the power module, the magneto-dependent sensor, the signal amplification circuit, the processor and the touch screen in combination with the preset reinforcement ratio model, and therefore the problems that in the prior art, when the floor thickness is detected, efficiency is low, and adaptability is insufficient are solved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a floor slab thickness measuring instrument for building construction. Background Technology

[0002] Floor slabs generally refer to a type of precast concrete component manufactured in a prefabrication yard. During floor slab acceptance, the thickness of the concrete floor slab is an important indicator. If the control is not strict during the on-site pouring of concrete, the floor slab thickness may be too thick or too thin. Therefore, it is necessary to use floor slab thickness testing equipment to test the thickness of the floor slab during the acceptance process.

[0003] Currently, the thickness of floor slabs is usually measured by manual drilling or ultrasonic testing. The former damages the structural integrity, while the latter is expensive and highly dependent on the operator's experience. This results in the current technology being inefficient and lacking adaptability when measuring the thickness of floor slabs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a floor slab thickness measuring instrument for building construction, aiming to solve the problems of low efficiency and insufficient adaptability of existing technologies in measuring floor slab thickness.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a floor slab thickness measuring instrument for building construction, comprising a housing, a probe assembly threadedly connected to one side of the housing, a magnetic sensor mounted on the end of the probe assembly away from the housing, a touch screen disposed on the side of the housing away from the probe assembly, a switch button and an external interface disposed on the outer wall of the housing, a PCB board disposed inside the housing, a power module, a processor and a signal amplification circuit mounted on the PCB board, the processor being electrically connected to the power module, the signal amplification circuit, the external interface, the switch button and the touch screen, the power module being electrically connected to the signal amplification circuit, the magnetic sensor, the external interface, the switch button and the touch screen, and the magnetic sensor being electrically connected to the signal amplification circuit.

[0006] The above technical solution involves using a magnetic sensor to measure the change in magnetic field strength of the steel reinforcement inside the floor slab in real time, and transmitting the signal to a signal amplification circuit. After amplification and filtering by the signal amplification circuit, the signal is transmitted to a processor for processing and analysis. The actual thickness is then calculated by combining the reinforcement ratio model of the floor slab under test. This solves the problems of low efficiency and insufficient adaptability of existing technologies in detecting floor slab thickness.

[0007] As a further description of the above technical solution:

[0008] The detection rod assembly includes a main rod, one end of which is threaded to one side of the housing. A secondary rod two is slidably connected to the inner wall of the other end of the main rod. A secondary rod three is slidably connected to the inner wall of the secondary rod two away from the main rod. A secondary rod one is slidably connected to the inner wall of the secondary rod three away from the secondary rod two. Locking assemblies are provided on the outer walls of the main rod, secondary rod two, and secondary rod three away from the housing. The magnetic sensor is installed at the end of the secondary rod one away from the main rod.

[0009] The above technical solution achieves the adjustment of the length of the detection rod assembly by extending the locking component, the second auxiliary rod, and the extension function of the detection rod assembly is realized by fixing it with the locking component.

[0010] As a further description of the above technical solution:

[0011] The locking assembly includes multiple locking knobs. The ends of the main rod, the second auxiliary rod, and the third auxiliary rod away from the housing are all fixedly connected with threaded retaining rings. One end of the threaded retaining ring has a through hole. The outer wall of the threaded retaining ring is threadedly connected to the inner wall of the locking knob. The inner wall of the locking knob away from the threaded retaining ring and the outer wall of the threaded retaining ring are in clearance fit.

[0012] The above technical solution achieves the locking function of the locking assembly by using the threaded connection and clearance fit between the locking knob and the threaded retaining ring, and by using the through hole on the threaded retaining ring.

[0013] As a further description of the above technical solution:

[0014] A connector is fixedly connected to one side of the housing, and the connector is threaded to one end of the main rod.

[0015] The above technical solution achieves quick connection and disassembly between the housing and the probe rod assembly through the fixed connection between the connector and the housing, and the threaded connection between the connector and the main rod.

[0016] As a further description of the above technical solution:

[0017] A communication module is also installed on the PCB board, and the communication module is electrically connected to the power module and the processor.

[0018] The above technical solution enables the detector to connect with external devices and terminals via a communication module, facilitating signal transmission and improving the detector's collaborative efficiency.

[0019] As a further description of the above technical solution:

[0020] The communication module includes a 2.4GHz wireless communication module, a 4G communication module, and a Bluetooth communication module.

[0021] The above technical solution improves the information transmission capability and data transmission stability of the detector by setting multiple communication methods in the communication module.

[0022] As a further description of the above technical solution:

[0023] A laser ranging module is also installed at the end of the secondary rod away from the main rod. The laser ranging module is electrically connected to the power module and the processor.

[0024] The above technical solution involves using a laser ranging module to measure the distance to the floor slab in real time and transmitting the signal to a processor for processing and analysis, thus forming a magnetic-optical dual-modal detection system to improve the ability to verify abnormal data.

[0025] As a further description of the above technical solution:

[0026] The magnetic sensor is embedded inside the secondary rod, 50mm from the port.

[0027] The above technical solution, through the embedded installation of the magnetic sensor, avoids damage to the magnetic sensor caused by bumps and knocks, thereby improving the protection performance of the detector.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the housing and PCB board provide support for each module, the switch button turns the detector on and off, the probe rod assembly adjusts the probe length, the external interface charges the power module and downloads data, the power module supplies power to each module, the magnetic sensor monitors the changes in the magnetic field strength of the steel bars inside the floor slab under test in real time, and the signal amplification circuit transmits the signal to the processor for processing and analysis. The actual thickness is then calculated by combining it with a preset reinforcement ratio model of the floor slab under test, and then displayed in real time on a touch screen. This solves the problems of low efficiency and insufficient adaptability in the existing technology for detecting floor slab thickness.

[0030] 2. In this utility model, the auxiliary rod provides support for the magnetic sensor and the laser ranging module. The laser ranging module transmits the real-time measurement data of the floor slab to be measured to the processor. Combined with the data measured by the magnetic sensor, the processor processes, compares and analyzes the data of the two to form a magnetic-optical dual-mode detection system. This reduces the influence of steel bars or the environment on the detection of the magnetic sensor, thereby reducing the misjudgment rate of the detector when detecting the thickness of the floor slab. Attached Figure Description

[0031] Figure 1This is a three-dimensional structural diagram of a floor slab thickness measuring instrument for building construction proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the probe rod assembly of a floor slab thickness measuring instrument for building construction proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the internal structure of a floor slab thickness measuring instrument for building construction proposed in this utility model.

[0034] Figure 4 This is a three-dimensional structural diagram of a floor slab thickness measuring instrument for building construction proposed in this utility model.

[0035] Legend:

[0036] 1. Housing; 2. Switch button; 3. External interface; 4. Probe rod assembly; 40. Main rod; 41. Secondary rod one; 42. Locking assembly; 420. Locking knob; 421. Threaded retaining ring; 422. Through hole; 43. Secondary rod two; 44. Secondary rod three; 5. Touch screen; 6. Magnetic sensor; 7. Laser ranging module; 8. Power module; 9. Communication module; 10. PCB board; 11. Connector; 12. Signal amplification circuit; 13. Processor. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Reference Figure 2 , Figure 3 and Figure 4 This utility model provides an embodiment of a floor slab thickness detector for building construction, comprising a housing 1, a probe assembly 4 threadedly connected to one side of the housing 1, a magnetic sensor 6 installed at the end of the probe assembly 4 away from the housing 1, a touch screen 5 provided on the side of the housing 1 away from the probe assembly 4, a switch button 2 and an external interface 3 respectively provided on the outer wall of the housing 1, a PCB board 10 provided inside the housing 1, a power module 8, a processor 13 and a signal amplification circuit 12 installed on the PCB board 10, the processor 13 being electrically connected to the power module 8, the signal amplification circuit 12, the external interface 3, the switch button 2 and the touch screen 5, the power module 8 being electrically connected to the signal amplification circuit 12, the magnetic sensor 6, the external interface 3, the switch button 2 and the touch screen 5, and the magnetic sensor 6 being electrically connected to the signal amplification circuit 12;

[0039] Specifically, the probe assembly 4 is made of carbon fiber or aluminum alloy, the magnetic sensor 6 is a Hall sensor or a giant magnetoresistive sensor, wherein the Hall sensor can be the SS49E linear model with a range of ±100mT, the power module 8 includes a battery pack and a battery management circuit, the battery management circuit is mounted on the PCB board 10 and is used for charging and discharging management and providing stable and safe power to each module in the detector, the processor 13 can be an ARM processor, such as an STM32F103C8T6 chip, the touch screen 5 can be a 128×64 pixel OLED touch screen, and the signal amplification circuit 12 is used to amplify the feedback signal of the magnetic sensor 6. All of the above are existing technologies.

[0040] Before using the instrument, the detector can be charged or have data downloaded via external interface 3. The PCB board 10 provides support for the power module 8, processor 13, and signal amplification circuit 12. First, press the switch button 2 to send a command to the power module 8, causing it to provide power to the detector. Place the end of the probe assembly 4 furthest from the housing 1 on a standard block. The standard block is used for zero-point calibration of the magnetic sensor 6; an angle sensor calibration device or a rheometer can be used. Then, fix the probe assembly 4 to the housing 1 via a threaded connection. Extend the probe assembly 4 to a suitable length and place the end of the probe assembly 4 furthest from the housing 1 vertically close to the surface of the floor slab to be tested. The probe of the magnetic sensor 6 is also perpendicular to the surface of the floor slab to be tested. The detector is slowly moved along the detection path, maintaining a moving speed of ≤0.5m / s. During this process, the magnetic sensor 6 detects the change in the magnetic field strength of the steel bars in the floor slab in real time and transmits the signal to the signal amplification circuit 12 in real time. After the signal amplification circuit 12 amplifies and filters the signal, it is transmitted to the processor 13 for processing and analysis. The actual thickness is calculated by combining the preset reinforcement ratio model of the floor slab to be tested (the reinforcement ratio model is the percentage of the area of ​​the stressed steel bars to the effective cross-sectional area of ​​the component in the building design code). The result is displayed on the touch screen 5 in real time, thus solving the problems of low efficiency and insufficient adaptability of the existing technology in detecting the thickness of floor slabs.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The detection rod assembly 4 includes a main rod 40, one end of which is threaded to one side of the housing 1. A secondary rod 43 is slidably connected to the inner wall of the other end of the main rod 40. A secondary rod 44 is slidably connected to the inner wall of the end of the secondary rod 43 away from the main rod 40. A secondary rod 41 is slidably connected to the inner wall of the end of the secondary rod 44 away from the secondary rod 43. Locking assemblies 42 are provided on the outer walls of the ends of the main rod 40, secondary rod 43, and secondary rod 44 away from the housing 1. A magnetic sensor 6 is installed on the end of the secondary rod 41 away from the main rod 40.

[0042] Specifically, when the probe assembly 4 is retracted, its length is 0.5m. When the probe assembly 4 is extended, the sliding connection between the auxiliary rod 1 41 and the auxiliary rod 3 44 allows the auxiliary rod 1 41 to slide out from the auxiliary rod 3 44 and be fixed by the locking assembly 42 on the auxiliary rod 3 44. The sliding connection between the auxiliary rod 3 44 and the auxiliary rod 2 43 allows the auxiliary rod 3 44 to be pulled out from the auxiliary rod 2 43 and be fixed by the locking assembly 42 on the auxiliary rod 2 43. The sliding connection between the auxiliary rod 2 43 and the main rod 40 allows the auxiliary rod 2 43 to be pulled out and be fixed by the locking assembly 42 on the main rod 40. Thus, the probe assembly 4 can be extended to a suitable length, and then the magnetic sensor 6 on the auxiliary rod 1 41 can start to detect the thickness of the floor slab under test. When the probe assembly 4 is fully extended, its length can reach 2m, thus realizing the extension function of the probe assembly 4.

[0043] Reference Figure 1 and Figure 2 The locking assembly 42 includes multiple locking knobs 420. The ends of the main rod 40, the second auxiliary rod 43, and the third auxiliary rod 44 away from the housing 1 are all fixedly connected with threaded retaining rings 421. One end of the threaded retaining ring 421 has a through hole 422. The outer wall of the threaded retaining ring 421 is threadedly connected to the inner wall of the locking knob 420. The inner wall of the locking knob 420 away from the threaded retaining ring 421 and the outer wall of the threaded retaining ring 421 are in clearance fit.

[0044] Specifically, with Figure 2 The locking knob 420 is designed with its front, back, left, and right sides as the orientation. The inner diameter of the front inner wall of the locking knob 420 increases from front to back. This design ensures that as the locking knob 420 is screwed into the threaded retaining ring 421, the inner wall of the locking knob 420 compresses the front end of the threaded retaining ring 421. When the auxiliary rod 41 passes through the front side of the auxiliary rod 44, the inner wall of the threaded retaining ring 421 remains in contact with the outer wall of the auxiliary rod 41. At this time, the inner wall of the front end of the locking knob 420 on the auxiliary rod 44 also remains in contact with the outer wall of the auxiliary rod 41. When the auxiliary rod 41 extends to the appropriate position, the locking knob 420 and the threaded retaining ring 421 are threaded together to lock the rod. The knob 420 is gradually screwed into the threaded retaining ring 421. Through the multiple through holes 422 on the threaded retaining ring 421, the end of the threaded retaining ring 421 away from the housing 1 can be squeezed towards the center by the inner wall of the locking knob 420, thus squeezing the outer wall of the auxiliary rod 41. This increases the friction between the outer wall of the auxiliary rod 41 and the inner wall of the threaded retaining ring 421, preventing the auxiliary rod 41 and the auxiliary rod 44 from sliding again, thereby fixing the auxiliary rod 41. Similarly, the auxiliary rod 44 and the auxiliary rod 43 can be extended to a suitable length and fixed, thus realizing the locking function of the locking assembly 42.

[0045] Reference Figure 1 , Figure 2 and Figure 3 A connector 11 is fixedly connected to one side of the housing 1, and the connector 11 is threadedly connected to one end of the main rod 40;

[0046] Specifically, a connection terminal is provided between the connector 11 and the main rod 40, so that the probe rod assembly 4 and the modules inside the housing 1 can be electrically connected, and the probe rod assembly 4 and the housing 1 can be quickly connected and disassembled through the threaded connection between the connector 11 and the main rod 40.

[0047] Reference Figure 3 and Figure 4 The PCB board 10 is also equipped with a communication module 9, which is electrically connected to the power module 8 and the processor 13.

[0048] Specifically, the PCB board 10 provides support for the communication module 9, the power module 8 provides power to the communication module 9, and the electrical connection between the communication module 9 and the processor 13 enables the detection instrument to transmit signals and data to external devices.

[0049] Reference Figure 3 and Figure 4 The communication module 9 includes a 2.4GHz wireless communication module, a 4G communication module, and a Bluetooth communication module;

[0050] Specifically, the 2.4GHz wireless communication module and 4G communication module in communication module 9 can transmit the measured data to the backend or terminal in real time for storage and analysis, and the Bluetooth communication module can transmit the measured data to the mobile APP in real time for measurement data analysis and report generation, thereby helping to improve the convenience of data visualization.

[0051] Reference Figure 2 , Figure 3 and Figure 4 A laser ranging module 7 is also installed at the end of the secondary pole 41 that is away from the main pole 40. The laser ranging module 7 is electrically connected to the power module 8 and the processor 13.

[0052] Specifically, the laser ranging module 7 is supported by the auxiliary rod 41, and the laser ranging module 7 is powered by the power module 8. Through the electrical connection between the laser ranging module 7 and the processor 13, the laser ranging module 7 transmits the real-time measurement data of the floor slab to be measured to the processor 13. Combined with the floor slab thickness, rebar spacing, protective layer thickness, and floor slab thickness measured by the magnetic sensor 6, the processor 13 processes, compares, and analyzes the data to reduce the influence of rebar or environment on the detection of the magnetic sensor 6. In complex working conditions (such as dense rebar and uneven surface), the cooperation between the magnetic sensor 6 and the laser ranging module 7 can reduce the false judgment rate.

[0053] Reference Figure 2 The magnetic sensor 6 is embedded inside the auxiliary rod 41 at a distance of 50mm from the port;

[0054] Specifically, the magnetic sensor 6 is embedded 50mm from the end of the auxiliary rod 41. In addition to effectively capturing the magnetic field signal of the steel bars inside the floor slab to be measured, the magnetic sensor 6 is also protected to avoid damage caused by bumps.

[0055] Working principle: When using this instrument, first press the switch button 2 to send a command to the power module 8, so that the power module 8 provides power to the detector. Place the end of the probe rod assembly 4 away from the housing 1 on the standard block to perform zero-point calibration of the magnetic sensor 6. Then install the probe rod assembly 4 onto the connector 11 and unfold the probe rod assembly 4 to a suitable length. Place the end of the probe rod assembly 4 away from the housing 1 vertically close to the surface of the floor slab to be tested. Slowly move the detector along the detection path, keeping the moving speed ≤0.5m / s. During this process, the magnetic sensor 6 detects the change in the magnetic field strength of the steel bars in the floor slab to be tested in real time and transmits the signal to the signal amplification circuit 12 in real time. After the signal amplification circuit 12 amplifies and filters the signal, it is transmitted to the processor 13 for processing and analysis. Combined with the preset reinforcement ratio model of the floor slab to be tested, the actual thickness is calculated, thereby realizing the measurement of the thickness of the floor slab to be tested.

[0056] Meanwhile, the laser ranging module 7 transmits the real-time measured data of the floor slab to the processor 13. The processor 13 processes and analyzes the data and compares it with the measured floor slab thickness data to form a magnetic-optical dual-mode detection system. This reduces the false judgment rate of the detector. The measured data is displayed on the touch screen 5, thus solving the problems of low efficiency and insufficient adaptability of existing technologies in detecting floor slab thickness.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floor thickness detector for construction, comprising a housing (1), characterized in that: A probe assembly (4) is threadedly connected to one side of the housing (1). A magnetic sensor (6) is installed at the end of the probe assembly (4) away from the housing (1). A touch screen (5) is provided on the side of the housing (1) away from the probe assembly (4). A switch button (2) and an external interface (3) are respectively provided on the outer wall of the housing (1). A PCB board (10) is provided inside the housing (1). A power module (8), a processor (13) and a signal amplification circuit (12) are installed on the PCB board (10). The processor (13) is electrically connected to the power module (8), the signal amplification circuit (12), the external interface (3), the switch button (2), and the touch screen (5). The power module (8) is electrically connected to the signal amplification circuit (12), the magnetic sensor (6), the external interface (3), the switch button (2), and the touch screen (5). The magnetic sensor (6) is electrically connected to the signal amplification circuit (12).

2. The floor thickness detector for building construction according to claim 1, characterized in that: The probe rod assembly (4) includes a main rod (40), one end of which is threaded to one side of the housing (1). The inner wall of the other end of the main rod (40) is slidably connected to a secondary rod (43). The inner wall of the secondary rod (43) away from the main rod (40) is slidably connected to a secondary rod (44). The inner wall of the secondary rod (44) away from the secondary rod (43) is slidably connected to a secondary rod (41). The outer wall of the main rod (40), secondary rod (43), and secondary rod (44) away from the housing (1) is provided with a locking assembly (42). The magnetic sensor (6) is installed at the end of the secondary rod (41) away from the main rod (40).

3. The floor thickness detector for building construction according to claim 2, characterized in that: The locking assembly (42) includes multiple locking knobs (420). The main rod (40), the second auxiliary rod (43), and the third auxiliary rod (44) are all fixedly connected to a threaded retaining ring (421) at the end away from the housing (1). One end of the threaded retaining ring (421) has a through hole (422). The outer wall of the threaded retaining ring (421) is threadedly connected to the inner wall of the locking knob (420). The inner wall of the locking knob (420) away from the threaded retaining ring (421) and the outer wall of the threaded retaining ring (421) are in clearance fit.

4. The floor thickness detector for building construction according to claim 2, characterized in that: A connector (11) is fixedly connected to one side of the housing (1), and the connector (11) is threaded to one end of the main rod (40).

5. The floor thickness detector for building construction according to claim 1, characterized in that: A communication module (9) is also installed on the PCB board (10), and the communication module (9) is electrically connected to the power module (8) and the processor (13).

6. The floor thickness detector for building construction according to claim 5, characterized in that: The communication module (9) includes a 2.4GHz wireless communication module, a 4G communication module and a Bluetooth communication module.

7. The floor thickness detector for building construction according to claim 2, characterized in that: A laser ranging module (7) is also installed at the end of the secondary rod (41) away from the main rod (40). The laser ranging module (7) is electrically connected to the power supply module (8) and the processor (13).

8. The floor thickness detector for building construction according to claim 2, characterized in that: The magnetic sensor (6) is embedded in the interior of the auxiliary rod (41) at a distance of 50 mm from the port.

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