Device and method for detecting hole-forming size of deep foundation pit

Abstract

The invention provides a deep foundation pit pore-forming size detection device and method, and the device comprises a detection mechanism which comprises a first housing, a pile depth detector, a pile diameter detector, a collection circuit board and a transmission antenna, the pile depth detector and the pile diameter detector are connected to the first housing and are respectively connected with the collection circuit board, and the collection circuit board is connected with a signal of the transmission antenna; and the receiving mechanism comprises a second shell, a receiving antenna and a data receiving circuit board, and the receiving antenna receives and transmits the antenna signals and is connected with the data receiving circuit board. In the detection process, all-directional scanning can be conducted on the inner wall of a formed hole, meanwhile, the defect problem existing in the foundation pit can be fed back in real time, and compared with a conventional foundation pit detection technology at the present stage, the detection efficiency is improved. The device has the advantages of being small in size, light in weight, convenient to operate, high in response speed, comprehensive and accurate in detection result, wide in application range, traceable in measurement result and the like.

Description

Technical Field

[0001] The invention relates to the technical field of hole detection, and in particular to a device and method for detecting the size of a hole formed in a deep foundation pit. Background Art

[0002] In modern construction projects, the quality control of foundation pit drilling is a crucial link, which is directly related to the stability and safety of the engineering structure. At present, the measurement of foundation pit drilling mainly relies on manual operation, using tools such as rulers, safety belts, extension ropes, soft ladders and anchor piles to measure the pile depth and pile diameter. However, this traditional method is not only inefficient, but also has significant safety risks and accuracy issues.

[0003] In the limited space of the foundation pit, manual measurement is not only limited by space, but also difficult to ensure data integrity and measurement accuracy due to the limitations of the measuring tools. In addition, during the manual measurement process, the inspectors need to directly face potential dangers such as pit wall collapse and high groundwater level, and the potential safety hazards cannot be ignored. In order to overcome the above problems, the industry has gradually developed and adopted some high-precision detection devices for contact-free detection. Although such methods can provide accurate measurement results by fitting 3D models through algorithms, these devices are often complex in structure and bulky in size, which is not convenient for rapid deployment and use in small and medium-sized foundation pits.

[0004] The existence of these problems makes the inspection of foundation pit hole quality not only time-consuming and labor-intensive, but also costly, and it is difficult to meet the engineering requirements of fast, efficient and safe. Therefore, the industry urgently needs a new type of measurement technology that can reduce or even eliminate direct manual participation, improve the accuracy and efficiency of measurement through automation and intelligent means, and reduce safety risks. Summary of the invention

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problems of limited use range and low detection efficiency of hole detection in the prior art, and to provide a deep foundation pit hole size detection device and method.

[0006] In order to solve the above technical problems, the present invention provides a deep foundation pit hole size detection device, which includes: a detection mechanism, the detection mechanism includes a first shell, at least one pile depth detector, at least two pile diameter detectors, a collection circuit board and a transmission antenna, at least one of the pile depth detectors is connected to the bottom of the first shell to detect the hole depth, at least two of the pile diameter detectors are symmetrically connected to the side wall of the first shell to detect the hole diameter, the pile depth detector and the pile diameter detector are respectively connected to the collection circuit board, and the collection circuit board is connected to the transmission antenna signal; a receiving mechanism, the receiving mechanism includes a second shell, a receiving antenna and a data receiving circuit board, the receiving antenna and the data receiving circuit board are both arranged inside the second shell, the receiving antenna receives the transmission antenna signal and is connected to the data receiving circuit board.

[0007] In one embodiment of the present invention, the detection mechanism includes a first end cover and a waterproof component, the first end cover is buckled on the first shell, and the waterproof component is connected between the first end cover and the first shell.

[0008] In one embodiment of the present invention, the first end cover includes an antenna patch plate and at least one hanging ring fixing hole, the transmission antenna is attached to the antenna patch plate, and the hanging ring fixing hole is connected to an external moving mechanism.

[0009] In one embodiment of the present invention, the first shell includes a first battery slot, a circuit mounting platform, a first indicator light and a switch button, the first power supply is arranged in the first battery slot and is connected to the pile depth detector and the pile diameter detector, the acquisition circuit board is connected to the circuit mounting platform, and the first indicator light and the switch button are respectively connected to the acquisition circuit board.

[0010] In one embodiment of the present invention, the receiving mechanism further includes a touch screen, a capacitive screen mounting platform is provided on the second shell, and the touch screen is buckled and connected to the capacitive screen mounting platform.

[0011] In one embodiment of the present invention, a second battery slot and a circuit board slot are provided inside the second shell, a second power supply is arranged in the second battery slot, the data receiving circuit board is arranged in the circuit board slot, an SD card slot, a switch slot, a charging slot and an antenna slot are also provided on the side wall of the second shell, and the receiving antenna is arranged inside the antenna slot.

[0012] In one embodiment of the present invention, the acquisition circuit board and the data receiving circuit board both include a single-chip microcomputer, a communication circuit and a power supply circuit. The acquisition circuit board and the data receiving circuit board are respectively connected to the corresponding communication circuit through the corresponding single chip, and the communication circuit is respectively connected to the corresponding power supply circuit.

[0013] In a deep foundation pit hole size detection method of the present invention, the deep foundation pit hole size detection is performed through the above-mentioned deep foundation pit hole size detection device, which includes: step S1, calibrating the test point of the hole to be detected, so that the test point and the punching plane of the hole to be detected are at the same horizontal height, and then moving the calibrated detection mechanism to the test point; step S2, driving the pile depth detector to perform linear detection on the bottom of the hole, and transmitting the detection result to the acquisition circuit board for signal conversion, and the converted first measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit hole depth detection process; step S3, driving the detection mechanism to move toward the hole depth until it reaches the bottom of the hole, in this process, driving at least two of the pile diameter detectors to detect the hole diameter, and transmitting the detection result to the acquisition circuit board for signal conversion, and the converted second measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit hole diameter detection process.

[0014] In one embodiment of the present invention, step S2 is specifically as follows: after the pile depth detector is powered on, a start measurement instruction is sent through a single-chip microcomputer to wake up the pile depth detector, and the detection data of the pile depth detector is sent to the single-chip microcomputer in real time for analysis. The analyzed electrical signal is transmitted to the receiving mechanism through a transmission antenna and fed back as a digital signal through a data receiving circuit to complete the deep foundation pit drilling depth detection process.

[0015] In one embodiment of the present invention, step S3 is specifically as follows: any of the pile diameter detectors are connected to an independent acquisition circuit and a transmission antenna. After the pile diameter detector is powered on, a start measurement instruction is sent through the single-chip microcomputer to wake up all the pile diameter detectors. The detection data of the pile diameter detectors are sent to the single-chip microcomputer in real time for analysis. The analyzed electrical signals are simultaneously transmitted to the receiving mechanism through multiple transmission antennas and fed back as digital signals through the data receiving circuit. The detection mechanism is moved to different depths of the hole for multiple times, and repeated detection is performed to complete the deep foundation pit hole diameter detection process.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art: The deep foundation pit hole size detection device and method described in the present invention detects the pile depth and loading through a detection mechanism, and synchronously transmits the detection information to a receiving mechanism, which integrates and feedbacks it, thereby realizing accurate detection of the deep foundation pit hole size. During the detection process, the present application can perform an all-round scan of the inner wall of the hole, and can also provide real-time feedback on the defects existing inside the foundation pit. Compared with the current conventional foundation pit detection technology, the present application has the advantages of small size, light weight, easy operation, fast response speed, comprehensive and accurate detection results, wide application range, and traceable measurement results, and has broad application prospects in hole detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the detection mechanism in the deep foundation pit hole size detection device in the preferred embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure at AA in the detection mechanism shown; Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the first shell in the detection mechanism shown; Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of a receiving mechanism in a deep foundation pit hole size detection device is shown; Figure 5 yes Figure 2 A schematic diagram of the three-dimensional structure of the second shell in the receiving mechanism shown; Figure 6 is a power supply circuit diagram in a preferred embodiment of the present invention; Figure 7 It is a circuit diagram of a single chip microcomputer connection in a preferred embodiment of the present invention; Figure 8 It is a wireless communication circuit diagram in a preferred embodiment of the present invention.

[0019] Explanation of the reference numerals in the specification: 100, detection mechanism; 110, first shell; 111, first battery slot; 112, circuit installation platform; 113, first indicator light; 114, switch button; 115, load-bearing plate; 120, pile depth detector; 130, pile diameter detector; 140, tripod; 150, first end cover; 151, antenna patch board; 152, lifting ring fixing hole; 160, waterproof part; 170, glass sheet; 200, receiving mechanism; 210, second shell; 211, second battery slot; 212, capacitive screen installation platform; 213, circuit board slot; 214, SD card slot; 215, switch slot; 216, charging slot; 217, antenna slot; 220, touch screen; 230, receiving antenna; 300, single-chip microcomputer; 400, wireless communication circuit; 500, power supply circuit. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0021] The present embodiment provides a deep foundation pit borehole size detection device, which includes: a detection mechanism 100, the detection mechanism 100 includes a first shell 110, at least one pile depth detector 120, at least two pile diameter detectors 130, a collection circuit board and a transmission antenna, at least one of the pile depth detectors 120 is connected to the bottom of the first shell 110 to detect the borehole depth, at least two of the pile diameter detectors 130 are symmetrically connected to the side wall of the first shell 110 to detect the borehole diameter, the pile depth detector 120 and the pile diameter detector 130 are respectively connected to the collection circuit board, and the collection circuit board is connected to the transmission antenna signal; a receiving mechanism 200, the receiving mechanism 200 includes a second shell 210, a receiving antenna 230 and a data receiving circuit board, the receiving antenna 230 and the data receiving circuit board are both arranged inside the second shell 210, the receiving antenna 230 receives the transmission antenna signal and is connected to the data receiving circuit board.

[0022] The deep foundation pit hole size detection device of the present invention detects the pile depth and loading through the detection mechanism 100, and synchronously transmits the detection information to the receiving mechanism 200, which integrates and feedbacks it, thereby realizing accurate detection of the deep foundation pit hole size. During the detection process, the present application can perform an all-round scan of the inner wall of the hole, and can also provide real-time feedback on the defects existing inside the foundation pit. Compared with the conventional foundation pit detection technology at this stage, the present application has the advantages of small size, light weight, easy operation, fast response speed, comprehensive and accurate detection results, wide application range, and traceable measurement results, and has broad application prospects in hole detection.

[0023] The pile depth detector 120 and the pile diameter detector 130 in the present application are preferably laser rangefinders. Specifically, the present embodiment specifically includes four pile diameter detectors 130 and one pile depth detector 120. The four pile diameter detectors 130 are evenly spaced around the side wall of the first shell 110, thereby being able to achieve all-round detection of the inner wall of the foundation pit borehole from four directions. In different implementations, other numbers of pile depth detectors 120 and pile diameter detectors 130 can be displayed and set according to actual detection requirements and actual detection environments, and the types of pile depth detectors 120 and pile diameter detectors 130 can also be adaptively adjusted, and the present invention does not impose specific restrictions on this.

[0024] See also Figure 1 As shown, the first shell 110 in this embodiment is used to provide a mounting platform for other components of the detection mechanism 100 on the one hand, and can also protect the internal components during the movement of the detection mechanism 100 on the other hand. It can be connected to an external mobile device to realize the movement process in the deep foundation pit drilling. This embodiment does not limit the external mobile device, which can be a manipulator, telescopic rod or other structure that can provide a driving connection. Furthermore, a tripod 140 is provided at the bottom of the first shell 110 in this embodiment to avoid collision damage when the detection mechanism 100 touches the bottom. Specifically, the first shell 110 in this embodiment is preferably a semi-open rectangular box, and its four side walls are respectively connected to a pile diameter detector 130, and the center of its bottom is connected to a pile depth detector 120, and its top can be connected to the outside world to facilitate the disassembly and assembly of the components.

[0025] See also Figure 2As shown, the first housing 110 in this embodiment includes a first battery slot 111, a circuit installation platform 112, a first indicator light 113 and a switch button 114. The first power supply is arranged in the first battery slot 111 and connected to the pile depth detector 120 and the pile diameter detector 130. The acquisition circuit board is connected to the circuit installation platform 112. The first indicator light 113 and the switch button 114 are respectively connected to the acquisition circuit board. Furthermore, in this embodiment, two first battery slots 111 are provided. To ensure the stability of the overall movement process of the detection mechanism 100, it is necessary to ensure that the center is located in the middle of the detection mechanism 100. Therefore, the present application evenly divides the multiple first power supplies into two groups to be placed in two symmetrically arranged first battery slots 111, thereby avoiding the problem that the pile depth detector 120 cannot be set toward the bottom of the hole during the lifting process due to the offset of the center of gravity of the detection mechanism 100, thereby affecting the hole depth detection result. The circuit board mounting platform is used to connect and fix the acquisition circuit board. In this embodiment, five acquisition circuit boards are respectively provided corresponding to four pile diameter detectors 130 and one pile depth detector 120. In the conventional structure, the structure in which multiple circuit boards are laid flat makes the overall volume of the equipment too large. In this application, based on the setting of the circuit mounting platform 112, multiple acquisition circuit boards can be installed in a stacked manner, thereby reducing the overall volume of the detection mechanism 100; the first indicator light 113 and the switch button 114 are used to control and feedback the operation status of the detection mechanism 100. This application does not impose specific restrictions on the specific types and quantities of the first indicator light 113 and the switch button 114.

[0026] Specifically, in this embodiment, a plurality of supporting plates 115 are provided, and the supporting plates 115 are arranged between the pile diameter detector 130 and the first battery slot 111. On the one hand, the supporting plates 115 are used to fix the pile diameter detector 130 to improve the accuracy of the pile diameter detection result during the movement, and on the other hand, they are used to limit the first power supply to reduce the shaking of the first power supply during the movement.

[0027] See also Figure 2 As shown, in this embodiment, glass sheets 170 are respectively provided corresponding to the pile depth detector 120 and the pile diameter detector 130 . The glass sheets 170 can be snap-fitted and fixed on the first housing 110 to protect the lenses of the corresponding detectors.

[0028] See also Figure 3 As shown, in actual use, in order to improve the usability of the detection device, the first shell 110 needs to have higher strength, so its thickness is thicker. However, in order to reduce the overall weight of the detection mechanism 100, the present application designs the interior of the first shell 110 as a honeycomb structure to minimize its weight without affecting the strength of the shell.

[0029] In this embodiment, since the working site of the tower foundation pit ranging system is outdoors, in order to prevent rainwater from entering the interior of the shell and damaging components, the detection mechanism 100 in this application includes a first end cover 150 and a waterproof component 160. The first end cover 150 is buckled on the first shell 110, and the waterproof component 160 is connected between the first end cover 150 and the first shell 110. Specifically, the waterproof component 160 can be set as waterproof glue, waterproof coating or other waterproof structure, and this application does not make specific restrictions on this. Furthermore, the first end cover 150 includes an antenna patch plate 151 and at least one lifting ring fixing hole 152, the transmission antenna is attached to the antenna patch plate 151, and the lifting ring fixing hole 152 is connected to the external moving mechanism. The ring fixing hole 152 is preferably a blind hole sunken downward from the upper surface of the first end cover 150, and the ring is fixedly connected to the ring fixing hole 152 by a nut. Furthermore, in order to prevent rainwater from entering the first shell 110 from the first end cover 150, waterproof glue needs to be poured into the ring fixing hole 152 after the ring is connected to prevent rainwater from entering. The antenna patch is used to attach and connect the transmission antenna. Furthermore, the antenna patch plate 151 can separate the wireless patch antenna from the metal components inside the first shell 110, thereby improving the signal transmission quality of the transmission antenna.

[0030] See also Figure 4 and Figure 5 As shown, the second housing 210 in this embodiment is provided with a second battery slot 211 and a circuit board slot 213, the second power source is arranged in the second battery slot 211, the data receiving circuit board is arranged in the circuit board slot 213, the side wall of the second housing 210 is also provided with an SD card slot 214, a switch slot 215, a charging slot 216 and an antenna slot 217, and the receiving antenna 230 is arranged inside the antenna slot 217. Further, the receiving mechanism 200 in this embodiment also includes a touch screen 220, and a capacitive screen mounting platform 212 is provided on the second housing 210, and the touch screen 220 is buckled and connected to the capacitive screen mounting platform 212. Among them, the SD card slot 214 and the antenna slot 217 are used for inserting and removing the SD card and installing the antenna respectively. The switch slot 215 and the charging slot 216 reserved on the side of the second housing 210 are used to connect the control data receiver power supply and the data receiver respectively. During the design process, the second shell 210 also needs to pay attention to the position height of the capacitive screen mounting platform 212 and the degree of matching with the size of the capacitive screen to prevent the capacitive screen from being damaged.

[0031] Specifically, see Figures 6 to 8As shown, the acquisition circuit board and the data receiving circuit board both include a single chip microcomputer 300, a communication circuit and a power supply circuit 500. The acquisition circuit board and the data receiving circuit board are respectively connected to the corresponding communication circuit through the corresponding single chip and, and the communication circuit is respectively connected to the corresponding power supply circuit 500. Specifically, the single chip microcomputer 300 in this embodiment uses an STM32F103C8T6 ARM core 32-bit single chip microcomputer, and the pile depth detector 120 and the pile diameter detector 130 can be connected to the corresponding single chip microcomputer 300 Uart1 communication interface through a serial communication interface. The first power supply and the second power supply in this embodiment can supply a 3.3V DC voltage, thereby powering the single chip microcomputer 300, the wireless communication circuit 400, the pile depth detector 120 and the pile diameter detector 130, wherein the wireless communication circuit 400 integrates an AS01-SPIPX wireless communication module of NRF24L01P and a power amplifier circuit, and completes the wireless transmission of laser ranging data under the control of the single chip microcomputer 300.

[0032] The receiving mechanism 200 in this embodiment also includes a touch screen 220. A capacitive screen mounting platform 212 is provided on the second shell 210. The touch screen 220 is snap-fitted and connected to the capacitive screen mounting platform 212. The touch screen 220 is used to complete the measurement display, data recording and other interface text box, button, recording control, label and other component design and configuration functions. It uses the data recording control of the serial port screen to complete the recording and export of measurement data; the data receiving circuit communicates with the touch screen 220 through the Uart1 serial communication port of the single-chip microcomputer 300, sends measurement display data and data recording data to the screen, and receives relevant setting data and control instructions issued by the touch screen 220; the data receiving circuit uses a patrol inspection method to read the measurement data of each laser ranging module, and sends it to the screen for display and recording after performing diameter calculation. Embodiment 2

[0033] This embodiment provides a method for detecting the size of a deep foundation pit hole, which detects the size of a deep foundation pit hole by using the deep foundation pit hole size detection device described in the first embodiment, and comprises: Step S1, calibrating a test point of a hole to be detected, so that the test point and the punching plane of the hole to be detected are at the same horizontal height, and then moving the calibrated detection mechanism to the test point; Step S2, drive the pile depth detector to perform linear detection on the bottom of the borehole, and transmit the detection result to the acquisition circuit board for signal conversion, and the converted first measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit borehole depth detection process; further, in this embodiment, step S2 is specifically as follows: after the pile depth detector is powered on, a start measurement instruction is sent through the single-chip microcomputer to wake up the pile depth detector, and the detection data of the pile depth detector is sent to the single-chip microcomputer in real time for analysis, and the analyzed electrical signal is transmitted to the receiving mechanism through the transmission antenna and fed back as a digital signal through the data receiving circuit to complete the deep foundation pit borehole depth detection process.

[0034] Step S3, drive the detection mechanism to move toward the depth of the hole until it reaches the bottom of the hole. In this process, drive at least two of the pile diameter detectors to detect the hole diameter, and transmit the detection result to the acquisition circuit board for signal conversion. The converted second measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit hole diameter detection process. Further, in this embodiment, step S3 is specifically as follows: any of the pile diameter detectors are connected to an independent acquisition circuit and a transmission antenna. After the pile diameter detector is powered, a start measurement instruction is sent through the single-chip microcomputer to wake up all the pile diameter detectors. The detection data of the pile diameter detector are respectively sent to the single-chip microcomputer in real time for analysis. The analyzed electrical signal is simultaneously transmitted to the receiving mechanism through multiple transmission antennas and fed back as a digital signal through the data receiving circuit. The detection mechanism is moved to different depths of the hole for multiple times, and after repeated detection, the deep foundation pit hole diameter detection process is completed.

[0035] Based on the above process, this embodiment can realize the rapid measurement of the diameter and depth of a single foundation pit. The whole process takes only about 3 minutes. Each detector is equipped with a set of data acquisition and communication circuits to form an independent wireless laser ranging system. The data receiving end reads the measurement data of the five detectors through patrol mode and calculates, displays and records them, thereby realizing a high-precision and high-efficiency detection process.

[0036] In summary, the deep foundation pit hole size detection device and method described in the present invention detects the pile depth and loading through a detection mechanism, and synchronously transmits the detection information to a receiving mechanism, which integrates and feedbacks it, thereby realizing accurate detection of the deep foundation pit hole size. During the detection process, the present application can perform an all-round scan of the inner wall of the hole, and can also provide real-time feedback on defects existing inside the foundation pit. Compared with the current conventional foundation pit detection technology, the present application has the advantages of small size, light weight, easy operation, fast response speed, comprehensive and accurate detection results, wide application range, and traceable measurement results, and has broad application prospects in hole detection.

[0037] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A deep foundation pit hole size detection device, characterized in that: include: A detection mechanism, the detection mechanism comprising a first shell, at least one pile depth detector, at least two pile diameter detectors, a collection circuit board and a transmission antenna, at least one of the pile depth detectors is connected to the bottom of the first shell to detect the hole depth, at least two of the pile diameter detectors are symmetrically connected to the side wall of the first shell to detect the hole diameter, the pile depth detector and the pile diameter detector are respectively connected to the collection circuit board, and the collection circuit board is connected to the transmission antenna signal; The receiving mechanism includes a second shell, a receiving antenna and a data receiving circuit board. The receiving antenna and the data receiving circuit board are both arranged inside the second shell. The receiving antenna receives the transmission antenna signal and is connected to the data receiving circuit board.

2. The deep foundation pit hole size detection device according to claim 1 is characterized in that: The detection mechanism includes a first end cover and a waterproof component. The first end cover is buckled on the first shell, and the waterproof component is connected between the first end cover and the first shell.

3. The deep foundation pit hole size detection device according to claim 2 is characterized in that: The first end cover includes an antenna patch plate and at least one hanging ring fixing hole, the transmission antenna is attached to the antenna patch plate, and the hanging ring fixing hole is connected to an external moving mechanism.

4. The deep foundation pit hole size detection device according to claim 1 is characterized in that: The first shell includes a first battery slot, a circuit mounting platform, a first indicator light and a switch button. The first power supply is arranged in the first battery slot and is connected to the pile depth detector and the pile diameter detector. The acquisition circuit board is connected to the circuit mounting platform. The first indicator light and the switch button are respectively connected to the acquisition circuit board.

5. The deep foundation pit hole size detection device according to claim 1 is characterized in that: The receiving mechanism also includes a touch screen. A capacitive screen mounting platform is provided on the second shell. The touch screen is buckled and connected to the capacitive screen mounting platform.

6. The deep foundation pit hole size detection device according to claim 1 is characterized in that: A second battery slot and a circuit board slot are provided inside the second shell, a second power supply is arranged in the second battery slot, the data receiving circuit board is arranged in the circuit board slot, an SD card slot, a switch slot, a charging slot and an antenna slot are also provided on the side wall of the second shell, and the receiving antenna is arranged inside the antenna slot.

7. The deep foundation pit hole size detection device according to claim 1 is characterized in that: The acquisition circuit board and the data receiving circuit board both include a single chip microcomputer, a communication circuit and a power supply circuit. The acquisition circuit board and the data receiving circuit board are respectively connected to the corresponding communication circuit through the corresponding single chip, and the communication circuit is respectively connected to the corresponding power supply circuit.

8. A method for detecting the size of a deep foundation pit hole, characterized in that: The deep foundation pit hole size detection device according to any one of claims 1 to 7 is used to detect the deep foundation pit hole size, which comprises: Step S1, calibrating a test point of a hole to be detected, so that the test point and the punching plane of the hole to be detected are at the same horizontal height, and then moving the calibrated detection mechanism to the test point; Step S2, driving the pile depth detector to perform linear detection on the bottom of the hole, and transmitting the detection result to the acquisition circuit board for signal conversion, and the converted first measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit hole depth detection process; Step S3, drive the detection mechanism to move toward the depth of the borehole until it reaches the bottom of the borehole. During this process, drive at least two of the pile diameter detectors to detect the borehole diameter, and transmit the detection result to the acquisition circuit board for signal conversion. The converted second measurement result is transmitted to the receiving mechanism through the transmission antenna for result feedback to complete the deep foundation pit borehole diameter detection process.

9. The method for detecting the size of a deep foundation pit hole according to claim 8, characterized in that: Step S2 is specifically as follows: after the pile depth detector is powered on, a start measurement instruction is sent through the single-chip microcomputer to wake up the pile depth detector, and the detection data of the pile depth detector is sent to the single-chip microcomputer in real time for analysis. The analyzed electrical signal is transmitted to the receiving mechanism through the transmission antenna and fed back as a digital signal through the data receiving circuit to complete the deep foundation pit drilling depth detection process.

10. The method for detecting the size of a deep foundation pit hole according to claim 8, characterized in that: Step S3 is specifically as follows: any of the pile diameter detectors are connected to an independent acquisition circuit and a transmission antenna. After the pile diameter detector is powered on, a start measurement instruction is sent through the single-chip microcomputer to wake up all the pile diameter detectors. The detection data of the pile diameter detectors are sent to the single-chip microcomputer in real time for analysis. The analyzed electrical signals are simultaneously transmitted to the receiving mechanism through multiple transmission antennas and fed back as digital signals through the data receiving circuit. The detection mechanism is moved to different depths of the hole for multiple times, and repeated detection is performed to complete the deep foundation pit hole diameter detection process.

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