Pile sinking construction perpendicularity UWB real-time diagnosis and display device

Abstract

The invention discloses a pile sinking construction perpendicularity UWB real-time diagnosis and display device. The system comprises a UWB beacon, a UWB positioning base station and a real-time analysis and display terminal which are sequentially connected in a wireless mode. The UWB beacons are installed on flange plates at the pile joint of the prefabricated pipe pile in a cross shape. The at least three UWB positioning base stations are arranged on the portion, located on the outer side of the prefabricated pipe pile, of the ground in a surrounding mode at intervals. And the real-time analysis and display terminal is held by a worker. The method has the advantages that through the UWB centimeter-level real-time positioning technology and multi-point direct monitoring of the pile body, the fundamental change of the posture of the pile sinking process from traditional static spot check to continuous dynamic tracking is achieved, and key technical support is provided for intelligent pile sinking construction. The construction adaptability is greatly improved through wireless detachable deployment, and the dependence on professional measuring personnel is reduced. High-precision data is combined with real-time graphic early warning, visual deviation correction guidance is provided for an operator, inclination overrun can be effectively prevented, and the bearing performance and engineering safety of a pile foundation are guaranteed from the source.

Description

Real-time UWB diagnostic and display device for verticality of pile driving construction Technical Field

[0001] This invention belongs to the field of auxiliary equipment technology for pile foundation construction, and specifically relates to a UWB (ultra-wideband) real-time diagnostic and display device for pile driving verticality during the precast pipe pile driving operation, which is used for real-time, wireless, and dynamic monitoring of the pile body. Background Technology

[0002] In pile foundation construction, pile verticality is a key parameter controlling bearing capacity and long-term safety. Current technologies mainly rely on manual plumb bobs, theodolites, or total stations for intermittent, static spot checks of pile verticality. These methods have significant limitations: low measurement efficiency, reliance on manual experience, and susceptibility to environmental interference. They also cannot achieve continuous, real-time attitude tracking during dynamic pile driving, which can lead to the failure to detect and correct tilting exceeding limits in a timely manner, potentially causing hidden engineering hazards such as pile displacement and reduced bearing capacity. This is especially true for large-diameter precast pipe piles, where tilting is difficult to correct once it occurs during pile driving. Therefore, developing a technical device that can monitor the spatial attitude of the pile in real-time, with high precision, and automatically during construction is of great significance for ensuring project quality and construction controllability. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a UWB real-time diagnostic and display device for pile driving construction verticality.

[0004] To achieve the above objectives, the present invention provides a UWB real-time diagnosis and display device for pile driving verticality, comprising UWB beacons, UWB positioning base stations, and a real-time analysis and display terminal connected wirelessly in sequence. The multiple UWB beacons are installed in a cross shape on the flanges at the pile section connections of the precast pipe pile, forming a spatial beacon array for continuously transmitting ultra-wideband pulse signals in a low-power mode. At least three UWB positioning base stations are spaced apart and arranged around the precast pipe pile on the ground to receive the ultra-wideband pulse signals transmitted by the UWB beacons. The base stations then calculate the three-dimensional spatial coordinates of each UWB beacon in real time and transmit them to the real-time analysis and display terminal. The real-time analysis and display terminal is handheld by the operator and dynamically calculates the spatial vector and movement trend of the actual axis of the pile body based on the three-dimensional spatial coordinates of the UWB beacons. It displays the verticality status of the pile body in real time in the form of numerical values, dynamic three-dimensional graphics, and trend curves, and automatically issues warnings when deviations exceed limits to guide corrective construction.

[0005] The UWB beacon uses a Qorvo DW3000 RF module, which is securely snapped into the bolt holes of the flange using a dedicated slot made of high-strength engineering plastic or metal. This method eliminates the need for welding and supports quick assembly and disassembly. The UWB beacon's housing has an IP67 or higher protection rating, making it dustproof and waterproof. It integrates a battery and motion wake-up module, transmitting signals intermittently only during piling operations to extend battery life.

[0006] The UWB positioning base station uses a Qorvo MDEK3001 fully integrated transceiver module, which is fixed on a tripod or permanent structure at a height of 2-3 meters to optimize signal coverage.

[0007] The real-time analysis and display terminal uses a laptop or mobile phone.

[0008] The UWB real-time diagnosis and display device for pile driving verticality provided by this invention has the following beneficial effects:

[0009] First, by utilizing UWB centimeter-level real-time positioning technology and direct multi-point monitoring of the pile body, a fundamental transformation has been achieved in the pile driving process, moving from traditional static sampling to continuous dynamic tracking, providing key technical support for intelligent pile driving construction. Second, wireless and detachable deployment greatly enhances construction adaptability and reduces reliance on professional surveyors. Third, high-precision data combined with real-time graphical early warning provides operators with intuitive guidance for correction, effectively preventing excessive tilting and ensuring the bearing capacity and safety of the pile foundation from the source. Attached Figure Description

[0010] Figure 1 is a perspective view of the UWB real-time diagnosis and display device for pile driving verticality provided by the present invention. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0012] As shown in Figure 1, the UWB real-time diagnosis and display device for pile driving verticality provided by the present invention includes UWB beacons 2, UWB positioning base stations 3, and a real-time analysis and display terminal 5 connected wirelessly in sequence. The multiple UWB beacons 2 are installed in a cross shape on the flange 4 at the pile section connection of the precast pipe pile 1, forming a spatial beacon array for continuously transmitting ultra-wideband pulse signals in a low-power mode. At least three UWB positioning base stations 3 are arranged at intervals around the precast pipe pile 1 on the ground outside the precast pipe pile 1 to receive the ultra-wideband pulse signals transmitted by the UWB beacons 2, then calculate the three-dimensional spatial coordinates of each UWB beacon 2 in real time and transmit them to the real-time analysis and display terminal 5. The real-time analysis and display terminal 5 is held by a worker and dynamically calculates the spatial vector and movement trend of the actual axis of the pile body based on the three-dimensional spatial coordinates of the UWB beacons 2. It displays the verticality status of the pile body in real time in the form of numerical values, dynamic three-dimensional graphics, and trend curves, and automatically issues a warning when the deviation exceeds the limit to guide the correction construction.

[0013] The UWB beacon 2 uses a Qorvo DW3000 RF module, which is securely snapped into the bolt holes of flange 4 using a dedicated slot made of high-strength engineering plastic or metal. This method eliminates the need for welding and supports quick assembly and disassembly. The UWB beacon 2's housing has an IP67 or higher protection rating, making it dustproof and waterproof. It integrates a battery and motion wake-up module, which intermittently transmits signals only during piling operations to extend battery life.

[0014] The UWB positioning base station 3 uses a Qorvo MDEK3001 fully integrated transceiver module, which is fixed on a tripod or permanent structure at a height of 2-3 meters to optimize signal coverage.

[0015] The real-time analysis and display terminal 5 is a laptop or mobile phone.

[0016] The working principle of the UWB real-time diagnosis and display device for pile driving verticality provided by the present invention is described below:

[0017] After deploying the device according to the above structure, firstly, high-precision measuring instruments such as a total station are used to accurately determine the geodetic coordinates (X, Y, Z) of each UWB positioning base station 3, and input them into the real-time analysis and display terminal 5 as the absolute coordinate reference for all calculations. Then, all UWB positioning base stations 3 are wirelessly synchronized with UWB beacons 2 and the real-time analysis and display terminal 5 at the nanosecond level, which is the key to achieving centimeter-level positioning.

[0018] After the device is started and the UWB beacon 2 is activated, each UWB beacon 2 transmits ultra-wideband pulse signals at a fixed frequency. At the same time, all UWB positioning base stations 3 synchronously receive the above signals and use the Time Difference of Arrival (TDOA) or Time of Arrival (TOA) algorithm to calculate the precise coordinates (xi, yi, zi) of each UWB beacon 2 in three-dimensional space in real time and transmit them to the real-time analysis and display terminal 5.

[0019] After receiving the precise coordinates of the multiple UWB beacons 2, the real-time analysis and display terminal 5 first calculates the centroid coordinates (arithmetic mean of the coordinates of each beacon) (xpj, ypj, zpj) of the multiple UWB beacons 2 on the same pile section and on the same flange 4. Then, it uses the least squares method to fit the centroid coordinates (xpj, ypj, zpj) at different depths to obtain the actual spatial axis equation of the entire pile in real time.

[0020] Finally, the actual spatial axis equation of the pile is compared with the gravity direction vector to obtain the pile tilt angle θ (the angle between the axis and the plumb line) and the pile offset direction and offset amount (the horizontal offset of the pile top center relative to the designed pile position in the east-west and north-south directions). Then, the verticality status is displayed in real time on the monitor in the form of numerical values, dynamic three-dimensional graphics and trend curves, and an automatic warning is given when the deviation exceeds the limit to guide the correction construction, thereby realizing the real-time diagnosis and display function.

Claims

1. A UWB real-time diagnostic and display device for the verticality of pile driving construction, characterized in that: The UWB real-time diagnostic and display device for pile driving verticality includes a UWB beacon (2), a UWB positioning base station (3), and a real-time analysis and display terminal (5) connected wirelessly in sequence. The multiple UWB beacons (2) are installed in a cross shape on the flange (4) at the pile section connection of the precast pipe pile (1), forming a spatial beacon array for continuously transmitting ultra-wideband pulse signals in a low-power mode. At least three UWB positioning base stations (3) are spaced apart and arranged around the precast pipe pile (1) on the ground outside the precast pipe pile (1). It is used to receive the ultra-wideband pulse signal emitted by the UWB beacon (2), and then calculate the three-dimensional spatial coordinates of each UWB beacon (2) in real time and transmit them to the real-time analysis and display terminal (5). The real-time analysis and display terminal (5) is held by the staff. Based on the three-dimensional spatial coordinates of the UWB beacon (2), it dynamically calculates the spatial vector and movement trend of the actual axis of the pile body, and displays the verticality status of the pile body in real time in the form of numerical values, dynamic three-dimensional graphics and trend curves. It also automatically issues an early warning when the deviation exceeds the limit to guide the correction construction.

2. The UWB real-time diagnosis and display device for pile driving verticality according to claim 1, characterized in that: The UWB beacon (2) uses a Qorvo DW3000 radio frequency module and is securely attached to the bolt holes of the flange (4) in a detachable manner using a special slot made of high-strength engineering plastic or metal. The outer shell has an IP67 or higher protection rating, is dustproof and waterproof, and integrates a battery and motion wake-up module.

3. The UWB real-time diagnosis and display device for pile driving verticality according to claim 1, characterized in that: The UWB positioning base station (3) uses a Qorvo MDEK3001 fully integrated transceiver module, which is fixed on a tripod or permanent structure at a height of 2-3 meters to optimize signal coverage.

4. The UWB real-time diagnosis and display device for pile driving verticality according to claim 1, characterized in that: The real-time analysis and display terminal (5) is a laptop or mobile phone.

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