Self-feedback type foundation pit deformation monitoring and early warning device

Abstract

The invention relates to the technical field of foundation pit monitoring, and provides a self-feedback type foundation pit deformation monitoring and early warning device, which comprises a laser transmitter and receiving system fixed at the edge of a foundation pit and used for transmitting and receiving data acquisition signals; the reflecting prisms are arranged at data acquisition points of the foundation pit and are used for collecting three-dimensional deformation data of the foundation pit at the data acquisition points, and the obtained three-dimensional deformation data of the foundation pit changing in real time are transmitted to the laser transmitter and the receiving system through the spherical reflectometer; the data processor is used for receiving the foundation pit three-dimensional deformation data transmitted by the laser transmitter and the receiving system, processing and analyzing the received foundation pit three-dimensional deformation data and generating an early warning signal; and the monitoring and alarming system is used for receiving the early warning signal sent by the data processor and realizing visual monitoring and alarming. According to the invention, the linear deformation of the foundation pit in multiple directions can be dynamically monitored in real time, and the monitoring precision and the precision of an early warning mechanism can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit monitoring, and in particular to a self-feeding foundation pit deformation monitoring and early warning device. Background Art

[0002] Foundation pit engineering is highly comprehensive and may involve structural engineering, engineering surveying, engineering geology, etc. By monitoring the foundation pit and obtaining real-time deformation data, we can not only understand the actual condition of the foundation pit, but also understand the deformation law of the foundation pit through further analysis of the data. In this way, we can analyze the various obstacles faced during the foundation pit excavation process, and take emergency measures in time to ensure the safety of the foundation pit project. At this stage, foundation pit deformation monitoring technology has gradually shown the characteristics of functional diversification, and its application field is also constantly expanding with the enrichment of its functions and the improvement of its performance. The existing foundation pit monitoring technology involves professional content in multiple disciplines, which widely covers a series of majors such as optical monitoring, GPS positioning and image measurement.

[0003] In the prior art, the traditional monitoring technology for foundation pit deformation mainly uses the free station setting method of the total station to manually establish an observation coordinate system to monitor the preset reference points to achieve the monitoring of foundation pit deformation. However, the labor intensity of regularly monitoring the deformation of the foundation pit by surveyors is high, the data error is difficult to control, and the measured data needs to be processed before it can be used, and there is no real-time dynamic monitoring capability.

[0004] In the existing technology, three-dimensional laser scanning is used for monitoring, and point cloud data of the foundation pit is obtained through laser pulse ranging. The measured data is processed and modeled to monitor the deformation of the foundation pit in real time. However, its technical theory is not mature and the equipment is expensive, and traditional manual total station monitoring assistance is required to improve the measurement accuracy.

[0005] In the prior art, inclinometers are used to monitor foundation pit deformation. A monitoring system is established by placing inclinometers at fixed points and recording readings regularly, mainly measuring the lateral displacement of soil. However, only data of one depth can be measured at the same time, and data of the same axis can only be measured at the same time. The measured data is single, the layout of monitoring points is labor-intensive, and manual lifting and placing of readings cannot achieve automated online monitoring and early warning.

[0006] In the prior art, close-range photogrammetry is used to solve the collinearity condition equation and calculate the three-dimensional coordinates of each point to monitor the foundation pit. The data processing of photogrammetry monitoring of foundation pit deformation is difficult, and its accuracy is affected by the layout of image control points, the size of image control points and the grid type.

[0007] In the existing technology, GPS technology is used to reasonably layout the benchmark point network and the monitoring point network, and a certain monitoring cycle and alarm value are set to realize foundation pit monitoring. However, it requires the monitoring personnel to have a certain technical foundation, and the layout of the monitoring network affects the monitoring accuracy. Summary of the invention

[0008] The purpose of the present invention is to solve at least one technical problem in the background technology and to provide a self-feeding foundation pit deformation monitoring and early warning device.

[0009] To achieve the above object, the present invention provides a self-feeding foundation pit deformation monitoring and early warning device, comprising:

[0010] The laser transmitter and receiving system are fixed at the edge of the foundation pit to transmit and receive data acquisition signals;

[0011] The reflecting prism is arranged at the data collection point of the foundation pit, collects the three-dimensional deformation data of the foundation pit at the data collection point, and transmits the real-time changing three-dimensional deformation data of the foundation pit to the laser transmitter and receiving system through the spherical reflectometer;

[0012] A data processor receives the three-dimensional deformation data of the foundation pit transmitted by the laser transmitter and the receiving system, processes and analyzes the received three-dimensional deformation data of the foundation pit, and generates an early warning signal;

[0013] The monitoring and alarm system receives the early warning signal sent by the data processor to realize visual monitoring and alarm.

[0014] According to one aspect of the present invention, the laser transmitter and receiving system comprises:

[0015] Solar panels to provide power for the laser transmitter and receiving system;

[0016] Laser emitting end;

[0017] Laser amplifiers;

[0018] The laser control board controls the laser emitting end to emit laser light and amplifies the laser light through the laser amplifier;

[0019] The receiving end, the emitted laser light is reflected to the receiving end through the reflecting prism, and the receiving end performs digital processing on the received laser signal to form data information;

[0020] The radio data transmitting end receives the data information sent by the receiving end and sends the data information to the data processor.

[0021] According to one aspect of the present invention, the reflecting prism comprises:

[0022] Prism system box;

[0023] The external prism is fixed around the prism system box, and refracts the received laser light as the three-dimensional deformation data of the foundation pit into the spherical reflectometer at different angles;

[0024] The spherical reflector is set at the center of the prism system box, receives lasers of different angles refracted by each external prism, and transmits the laser signal reflecting the real-time changes of the foundation pit to the laser transmitter and receiving system.

[0025] According to one aspect of the present invention, the monitoring alarm system comprises:

[0026] The on-site alarm module receives the warning signal sent by the data processor, identifies the warning signal, generates sound and light alarms of different degrees, and displays the monitoring results in real time;

[0027] The indoor monitoring module receives the warning signal sent by the data processor and monitors the indoor visual screen display according to the warning signal.

[0028] According to one aspect of the present invention, the on-site alarm module comprises: a housing and a signal input source supported on the housing, a circuit board, a signal line, a forward and reverse motor, a transmission structure, an alarm bell, an illuminating lamp, a red and blue two-color light-transmitting cover, and a lampshade;

[0029] The signal input source receives the warning signal and transmits the warning signal to the circuit board. The circuit board controls the forward and reverse motors and the lighting lamp to start through the signal line. The forward and reverse motors ring the alarm bell through the transmission structure and drive the red and blue two-color translucent cover in the lampshade to rotate.

[0030] According to one aspect of the present invention, the transmission structure comprises: a transmission worm, a turbine and a transmission rod;

[0031] One end of the transmission worm is connected to the output shaft of the forward and reverse motor, and the other end is provided with a helical tooth meshing with the turbine tooth;

[0032] One end of the transmission rod is coaxially connected to the turbine, and the other end is connected to the red and blue two-color light-transmitting cover.

[0033] According to one aspect of the present invention, the transmission structure further includes: a knocking rod, which is installed at the other end of the transmission worm and is used to knock the alarm bell.

[0034] According to one aspect of the present invention, the on-site alarm module includes: an LED display screen, a jumper, a power cord, a signal receiver, a DC power supply, a microcontroller, a resistor, an RGB LED, a lampshade, a MOSFET, a breadboard, a buzzer, and a housing;

[0035] The signal receiver receives the warning signal and transmits the warning signal to the microcontroller. The microcontroller processes the data transmission signal and transmits it to the MOSFET via the resistor. The MOSFET controls the RGB LED to emit light. The microcontroller transmits the data to the LED display screen for display. The microcontroller transmits the signal to the buzzer.

[0036] According to one aspect of the present invention, the foundation pit, the laser transmitter and receiving system, and the reflective prism are all provided with a Beidou positioning system for acquiring position data of corresponding placement points.

[0037] According to one aspect of the present invention, the reflecting prism is arranged at each data collection point in the foundation pit, and the laser transmitter and receiving system are arranged at the upper edge of the foundation pit, so that the emitted laser can cover the reflecting prism at each position.

[0038] According to one solution of the present invention, a self-feeding foundation pit deformation monitoring and early warning device comprises: a laser transmitter and receiving system, fixed at the edge of the foundation pit, for transmitting and receiving data acquisition signals; a reflective prism, arranged at the data acquisition point of the foundation pit, for collecting the three-dimensional deformation data of the foundation pit at the data acquisition point, and transmitting the obtained three-dimensional deformation data of the foundation pit in real time to the laser transmitter and receiving system through a spherical reflectometer; a data processor, for receiving the three-dimensional deformation data of the foundation pit transmitted by the laser transmitter and receiving system, processing and analyzing the received three-dimensional deformation data of the foundation pit, and generating an early warning signal; a monitoring and alarm system, for receiving the early warning signal issued by the data processor, and realizing visual monitoring and alarm. With such a configuration, when the foundation pit is deformed, the laser emitted by the laser transmitter and receiving system is reflected to the laser transmitter and receiving system through the reflection of the reflective prism, and the laser transmitter and receiving system processes the reflected laser signal into data and transmits it to the data processor, the data processor analyzes the relevant data and generates an early warning signal, and then transmits the early warning signal to the monitoring and alarm system, and the monitoring and alarm system distinguishes the received early warning signal and gives different degrees of prompts and alarms. The present invention realizes real-time dynamic monitoring and improves the accuracy of the early warning mechanism.

[0039] According to one solution of the present invention, the laser transmitter and receiving system include: a solar panel, which provides power for the laser transmitter and receiving system; a laser transmitting end, which emits laser toward the reflective prism at the data collection point of the foundation pit; a laser amplifier, which amplifies the laser emitted by the laser transmitting end; a laser control board, which controls the laser transmitting end to emit laser and amplifies the laser through the laser amplifier; a receiving end, the emitted laser is reflected to the receiving end through the reflective prism, and the receiving end performs data processing on the received laser signal to form data information; a radio data transmitting end, which receives the data information sent by the receiving end and sends the data information to the data processor. In this way, the laser transmitting end and the laser amplifier can emit an adaptive laser signal to the reflective prism to ensure that the reflective prism can receive the laser and reflect the laser, and then the reflected laser signal is received by the receiving end and processed into data and transmitted to the data processor. The data processor analyzes and compares the data to determine whether the foundation pit is deformed. When it is determined that deformation occurs, an early warning signal is generated and a prompt and alarm are given through the monitoring and alarm system.

[0040] According to one solution of the present invention, the reflecting prism includes: a prism system box; an external prism fixed around the prism system box, refracting the received laser as the three-dimensional deformation data of the foundation pit into the spherical reflector at different angles; the spherical reflector is arranged at the center of the prism system box, receiving the lasers at different angles refracted by each external prism, and transmitting the laser signal reflecting the real-time change of the foundation pit to the laser transmitter and receiving system. Such an arrangement enables the spherical reflector to receive the real-time changing laser signals in multiple directions, and transmit the laser signals to the laser transmitter and receiving system for data processing, so that the three-dimensional deformation data of the foundation pit obtained by the reflecting prism can be more comprehensive and accurate, effectively improving the monitoring and early warning accuracy.

[0041] According to one solution of the present invention, the monitoring and alarm system includes: an on-site alarm module, which receives the early warning signal from the data processor, and performs different degrees of sound and light alarm and data display on the foundation pit site according to the early warning signal; an indoor monitoring module, which receives the early warning signal from the data processor, and performs visual screen display in the monitoring room according to the early warning signal. Such a setting can make the indoor monitoring room screen prompt through the indoor monitoring module, and the foundation pit site sound and light alarm through the on-site alarm module, to ensure timely early warning, and ensure that the foundation pit timely discovers problems and alarms and prompts when the signs of disaster just appear.

[0042] According to the solution of the present invention, the self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can dynamically and real-time monitor the linear deformation generated in the three directions of X, Y, and Z of the foundation pit at one time. The measured data can be used to monitor the horizontal displacement, vertical displacement and inclined displacement of the foundation pit, and realize real-time dynamic monitoring, thereby improving the accuracy of the early warning mechanism.

[0043] The self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can transmit the foundation pit deformation data collected on-site to the duty station in the duty room by wireless transmission. When the deformation exceeds the set allowable deformation in the specification, the alarm system in the device automatically starts and starts to send alarms to the duty room and the foundation pit site. The staff on site and in the duty room can discover the problem and deal with it in time when the signs of foundation pit disaster just appear according to the displayed early warning information and the degree of early warning.

[0044] The self-feeding foundation pit deformation monitoring and early warning device provided by the present invention displays monitoring data in real time at the construction site, and issues early warnings of varying degrees according to the monitoring situation, so that the staff can take foundation pit treatment measures in a timely and effective manner.

[0045] The self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can transmit the foundation pit deformation data collected on-site to a data processor via wireless, store and manage the data, and visualize the data after associating it with the BIM model, so as to simulate the foundation pit deformation condition on-site in a more intuitive form, allowing staff to analyze and predict changing trends.

[0046] The present invention is an independent module integrated device, each module is simple and portable, the layout points are flexible and adjustable, and it can be applied to foundation pit monitoring with different needs.

[0047] The present invention uses optical reflection to monitor data accurately and efficiently, and collects and processes data into a system, thereby achieving full automation of monitoring and early warning and saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram showing the structural arrangement of a self-feeding foundation pit deformation monitoring and early warning device according to an embodiment of the present invention;

[0049] Figure 2 A schematic diagram showing the structure arrangement of a laser transmitter and a receiving system according to an embodiment of the present invention;

[0050] Figure 3 A schematic diagram showing the structural arrangement of a reflective prism according to an embodiment of the present invention;

[0051] Figure 4 A schematic diagram showing a structural arrangement of a field alarm module according to an embodiment of the present invention;

[0052] Figure 5 A schematic diagram showing a structural arrangement of a field alarm module according to another embodiment of the present invention;

[0053] Figure 6 A block diagram schematically shows the structural arrangement of a data processor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0055] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0056] Figure 1The following is a schematic diagram showing the structural arrangement of a self-feeding foundation pit deformation monitoring and early warning device according to an embodiment of the present invention. Figure 1 As shown, in this embodiment, the self-feeding foundation pit deformation monitoring and early warning device includes:

[0057] The laser transmitter and receiving system 1 is fixed at the edge of the foundation pit 2 to transmit and receive data acquisition signals;

[0058] The reflecting prism 3 is arranged at the data collection point of the foundation pit 2, collects the three-dimensional deformation data of the foundation pit at the data collection point, and transmits the obtained three-dimensional deformation data of the foundation pit that changes in real time to the laser transmitter and receiving system 1 through the spherical reflectometer;

[0059] The data processor 4 receives the three-dimensional deformation data of the foundation pit transmitted by the laser transmitter and the receiving system 1, processes and analyzes the received three-dimensional deformation data of the foundation pit, and generates an early warning signal;

[0060] The monitoring alarm system receives the early warning signal sent by the data processor 4 to realize visual monitoring and alarm. With such a configuration, when the foundation pit is deformed, the laser emitted by the laser transmitter and receiving system 1 is reflected to the laser transmitter and receiving system 1 by the reflection action of the reflection prism 3. The laser transmitter and receiving system 1 processes the reflected laser signal into data and transmits it to the data processor 4. The data processor 4 analyzes the relevant data and generates an early warning signal, and then transmits the early warning signal to the monitoring alarm system. When the monitoring alarm system receives the early warning signal, it prompts and alarms. The present invention realizes real-time dynamic monitoring and improves the accuracy of the early warning mechanism.

[0061] Further, Figure 2 The structure layout diagram of the laser transmitter and receiving system according to one embodiment of the present invention is schematically shown. Figure 2 As shown, in this embodiment, the laser transmitter and receiving system 1 includes:

[0062] Solar panel 5, providing power for the laser transmitter and receiving system;

[0063] The laser emitting end 6 emits laser toward the reflecting prism at the foundation pit data collection point;

[0064] A laser amplifier 7 amplifies the laser light 6 emitted by the laser emitting end 6;

[0065] The laser control board 8 controls the laser emitting end 6 to emit laser light and amplifies the laser light through the laser amplifier 7;

[0066] The receiving end 9, the emitted laser light is reflected to the receiving end 9 through the reflecting prism 3, and the receiving end 9 performs digital processing on the received laser signal to form data information;

[0067] The radio data transmitting end 10 receives the data information sent by the receiving end 9 and sends the data information to the data processor 4. With such a configuration, an adaptive laser signal can be emitted to the reflecting prism 3 through the laser emitting end 6 and the laser amplifier 7, ensuring that the reflecting prism 3 can receive the laser and reflect the laser, and then the reflected laser signal is received by the receiving end 9 and processed into data and transmitted to the data processor 4. The data processor 4 analyzes and compares the data to determine whether the foundation pit is deformed. If it is determined that deformation occurs, an early warning signal is generated and a prompt and alarm are issued through the monitoring alarm system.

[0068] Further, Figure 3 The structure arrangement diagram of the reflective prism according to one embodiment of the present invention is schematically shown. Figure 3 As shown, in this embodiment, the reflecting prism 3 includes:

[0069] Prism system box 11;

[0070] The external prism 12 is fixed around the prism system box 11, and refracts the received laser light as the three-dimensional deformation data of the foundation pit into the spherical reflectometer 13 at different angles;

[0071] The spherical reflector 13 is arranged at the center of the prism system box 11, receives lasers of different angles refracted by each external prism 12, and transmits the laser signal reflecting the real-time changes of the foundation pit to the laser transmitter and receiving system 1. Such an arrangement enables the spherical reflector 13 to receive real-time changing laser signals in multiple directions, and transmit the laser signals to the laser transmitter and receiving system 1 for data processing, so that the three-dimensional deformation data of the foundation pit obtained by the reflection prism 3 can be more comprehensive and accurate, effectively improving the monitoring and early warning accuracy.

[0072] Furthermore, if Figure 1 As shown, in this embodiment, the monitoring alarm system includes:

[0073] The on-site alarm module 14 receives the warning signal sent by the data processor 4, identifies the warning signal, generates sound and light alarms of different degrees according to the warning signal, and displays the monitoring results in real time;

[0074] The indoor monitoring module 15 receives the warning signal from the data processor 4 and performs visual screen display in the monitoring room according to the warning signal. In this way, the indoor monitoring module 5 can be used to monitor the indoor screen prompt, and the on-site alarm module 14 can be used to sound and light alarm on the foundation pit site, so as to ensure timely warning and ensure that the foundation pit can find problems and issue alarm prompts in time when the disaster signs just appear.

[0075] Further, Figure 4The structural arrangement diagram of the on-site alarm module according to one embodiment of the present invention is schematically shown. Figure 4 As shown, in this embodiment, the on-site alarm module 14 includes: a housing 16 and a signal input source 17 supported on the housing 16, a circuit board 18, a signal line 19, a forward and reverse motor 20, a transmission structure, an alarm bell 21, an illuminating lamp 22, a red and blue two-color light-transmitting cover 23, and a lamp cover 24;

[0076] Among them, Figure 4 As shown, the lighting lamp 22 and the red and blue two-color light-transmitting cover 23 are arranged in the lampshade 24, and the red and blue two-color light-transmitting cover 23 is rotatably arranged on the periphery of the lighting lamp 22. When the lighting lamp 22 is turned on and the red and blue two-color light-transmitting cover 23 rotates, the rotation alarm effect of the red and blue two-color lamp can be achieved;

[0077] Specifically, after receiving the warning signal, the signal input source 17 transmits the warning signal to the circuit board 18, and the circuit board 18 controls the forward and reverse motor 20 and the lighting lamp 22 to start through the signal line 19. The forward and reverse motor 20 rings the alarm bell 21 through the transmission structure and drives the red and blue two-color light-transmitting cover in the lampshade to rotate, thereby realizing the sound and light alarm. With this arrangement, the foundation pit site can use the sound and light alarm to remind the staff that the foundation pit is deformed, and remind the staff to intervene in the foundation pit immediately, thereby avoiding serious disasters in the foundation pit.

[0078] Furthermore, if Figure 4 As shown, in this embodiment, the transmission structure includes: a transmission worm 25, a turbine 26 and a transmission rod 27;

[0079] One end of the transmission worm 25 is connected to the output shaft of the forward and reverse motor 20, and the other end is provided with helical teeth that mesh with the gears of the turbine 26;

[0080] One end of the transmission rod 27 is coaxially connected to the turbine 26, and the other end is connected to the red and blue two-color light-transmitting cover 23. In this way, the forward and reverse rotation of the forward and reverse motor 20 can drive the worm gear to move, thereby driving the forward and reverse movement of the red and blue two-color light-transmitting cover 23 to achieve light alarm.

[0081] Furthermore, if Figure 4 As shown, in this embodiment, the transmission structure further includes: a knocking rod 28, which is mounted on the other end (right end) of the transmission worm 25 and is used to knock the alarm bell 21. In this way, the forward and reverse rotation of the forward and reverse motor 20 can drive the forward and reverse rotation of the transmission worm 25, and the forward and reverse rotation of the knocking rod 28 can be driven by the forward and reverse rotation of the transmission worm 25, so as to repeatedly knock the alarm bell 21 to realize the sound alarm.

[0082] Further, Figure 5 The structural arrangement diagram of the on-site alarm module according to another embodiment of the present invention is schematically shown. Figure 5 As shown, in this embodiment, the on-site alarm module 14 includes: an LED display screen 16, a jumper 17, a power cord 18, a signal receiver 19, a DC power supply 20, a microcontroller 21, a resistor 22, an RGB LED 23, a lampshade 24, a MOSFET 25, a breadboard 26, a buzzer 27, and a housing 28;

[0083] Among them, Figure 5 As shown, the signal receiver 19 transmits the warning signal to the microcontroller 21, the microcontroller 21 processes the data transmission signal to the MOSFET 25 via the resistor 22, the MOSFET 25 controls the RGB LED 23 to emit light, the microcontroller 21 transmits the data to the LED display screen 16 for display, and the microcontroller 21 transmits the signal to the buzzer 27;

[0084] Specifically, the signal receiver 19 , the DC power supply 20 , the microcontroller 21 , the resistor 22 , and the MOSFET 25 are fixed on the breadboard 26 and connected via the jumper 17 , and the LED display 16 , the buzzer 27 , and the RGB LED 23 are placed outside the housing 28 and connected to the inside of the housing 28 via the jumper 17 .

[0085] Furthermore, if Figure 5 As shown, in this embodiment, the analog input pin of the microcontroller 21 is connected to the signal receiver 19, the digital output pin is connected to the buzzer 27, the I2C port is connected to the LED display 16, and the output pin is connected to the control end of the MOSFET 25 through the resistor 22;

[0086] The input and output ends of MOSFET 25 are connected to RGB LED 23, and the control end is connected to microcontroller 21.

[0087] The DC power supply 20 is connected to an external power supply and is connected to a signal receiver 19, a microcontroller 21, a MOSFET 25, a buzzer 27 and an LED display screen 16 through a power line 18. In this way, the warning degree can be determined by the program in the microcontroller 21, and the MOSFET 25 controls the RGB LED 23 to display warning information of different colors.

[0088] Further, Figure 6 A block diagram schematically shows the structural arrangement of a data processor according to an embodiment of the present invention. Figure 6 As shown, in this embodiment, the data processor 4 is a conventional computer device, the radio data receiving end 29 receives the radio data transmitted by the laser transmitter and the receiving system 1, the computer program 30 converts the radio data into a dynamic database 31 and stores it in the internal memory 32, and judges whether the data exceeds the allowable deformation amount of the specification through the program, and transmits the early warning signal to the indoor monitoring module 15 and the on-site alarm module 14 through the network interface 33.

[0089] Furthermore, in this embodiment, a Beidou positioning system 34 for obtaining position data of corresponding placement points is arranged in the foundation pit 2, the laser transmitter and receiving system 1, and the reflective prism 3, and the Beidou positioning system 34 is electrically connected to the indoor monitoring module. Such arrangement enables the indoor monitoring module 15 to conveniently monitor and locate the foundation pit.

[0090] Furthermore, in this embodiment, during the actual installation process, according to the characteristics of the foundation pit and the data collection requirements, a reflective prism 3 is arranged at each data collection point, and the laser transmitter and receiving system 1 are fixed to the upper edge of the foundation pit so that the laser emission can cover the monitoring point. The point arrangement is specifically set according to the actual construction requirements.

[0091] In this embodiment, the specific position of each reflecting prism is adjusted according to the surrounding environment of the foundation pit. After the optimal monitoring layout is determined, the laser transmitter and receiving system are fixed, and the laser transmitter and receiving system are calibrated by manually adjusting the position of each reflecting prism to ensure normal data transmission.

[0092] After the device is debugged, the entire device can start working. During operation, if the foundation pit is deformed, the deformation data will be transmitted to the data processor through the radio data transmitter, and data processing, analysis and judgment will be performed. The processed point deformation data will be transmitted to the indoor monitoring module. When the foundation pit is deformed, an alarm signal will be generated, triggering the on-site alarm module to respond.

[0093] According to the above scheme of the present invention, the self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can dynamically and real-time monitor the linear deformation generated in the three directions of X, Y and Z of the foundation pit at one time, and the measured data can be used for monitoring the horizontal displacement, vertical displacement and inclined displacement of the foundation pit, and realizes real-time dynamic monitoring, thereby improving the accuracy of the early warning mechanism.

[0094] The self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can transmit the foundation pit deformation data collected on-site to the duty station in the duty room by wireless transmission. When the deformation exceeds the set allowable deformation in the specification, the alarm system in the device automatically starts and starts to send alarms to the duty room and the foundation pit site. The staff on site and in the duty room can discover the problem and deal with it in time when the signs of foundation pit disaster just appear according to the displayed early warning information and the degree of early warning.

[0095] The self-feeding foundation pit deformation monitoring and early warning device provided by the present invention can transmit the foundation pit deformation data collected on-site to a data processor via wireless, store and manage the data, and visualize the data after associating it with the BIM model, so as to simulate the foundation pit deformation condition on-site in a more intuitive form, allowing staff to analyze and predict changing trends.

[0096] The LED screen of the construction site alarm module of the self-fed foundation pit deformation monitoring and early warning device provided by the present invention can display the monitoring data and the degree of change in real time at the construction site, and issue early warnings of different degrees according to the monitoring situation, so that the staff can take foundation pit treatment measures in a timely and effective manner.

[0097] The present invention is an independent module integrated device, each module is simple and portable, the layout points are flexible and adjustable, and it can be applied to foundation pit monitoring with different needs.

[0098] The present invention uses optical reflection to monitor data accurately and efficiently, and collects and processes data into a system, thereby achieving full automation of monitoring and early warning and saving labor.

[0099] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A self-feeding foundation pit deformation monitoring and early warning device, characterized in that: include: The laser transmitter and receiving system are fixed at the edge of the foundation pit to transmit and receive data acquisition signals; The reflecting prism is arranged at the data collection point of the foundation pit, collects the three-dimensional deformation data of the foundation pit at the data collection point, and transmits the real-time changing three-dimensional deformation data of the foundation pit to the laser transmitter and receiving system through the spherical reflectometer; A data processor receives the three-dimensional deformation data of the foundation pit transmitted by the laser transmitter and the receiving system, processes and analyzes the received three-dimensional deformation data of the foundation pit, and generates an early warning signal; The monitoring and alarm system receives the early warning signal sent by the data processor to realize visual monitoring and alarm.

2. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The laser transmitter and receiving system comprises: Solar panels to provide power for the laser transmitter and receiving system; Laser emitting end; Laser amplifiers; The laser control board controls the laser emitting end to emit laser light and amplifies the laser light through the laser amplifier; The receiving end, the emitted laser light is reflected to the receiving end through the reflecting prism, and the receiving end performs digital processing on the received laser signal to form data information; The radio data transmitting end receives the data information sent by the receiving end and sends the data information to the data processor.

3. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The reflecting prism comprises: Prism system box; The external prism is fixed around the prism system box, and refracts the received laser light as the three-dimensional deformation data of the foundation pit into the spherical reflectometer at different angles; The spherical reflector is set at the center of the prism system box, receives lasers of different angles refracted by each external prism, and transmits the laser signal reflecting the real-time changes of the foundation pit to the laser transmitter and receiving system.

4. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The monitoring and alarm system comprises: The on-site alarm module receives the warning signal sent by the data processor, identifies the warning signal, generates sound and light alarms of different degrees, and displays the monitoring results in real time; The indoor monitoring module receives the warning signal sent by the data processor and monitors the indoor visual screen display according to the warning signal.

5. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The on-site alarm module comprises: a housing and a signal input source supported on the housing, a circuit board, a signal line, a forward and reverse motor, a transmission structure, an alarm bell, an illuminating lamp, a red and blue two-color light-transmitting cover, and a lampshade; The signal input source receives the warning signal and transmits the warning signal to the circuit board. The circuit board controls the forward and reverse motors and the lighting lamp to start through the signal line. The forward and reverse motors ring the alarm bell through the transmission structure and drive the red and blue two-color translucent cover in the lampshade to rotate.

6. The self-feeding foundation pit deformation monitoring and early warning device according to claim 5 is characterized in that: The transmission structure comprises: a transmission worm, a turbine and a transmission rod; One end of the transmission worm is connected to the output shaft of the forward and reverse motor, and the other end is provided with a helical tooth meshing with the turbine tooth; One end of the transmission rod is coaxially connected to the turbine, and the other end is connected to the red and blue two-color light-transmitting cover.

7. The self-feeding foundation pit deformation monitoring and early warning device according to claim 6 is characterized in that: The transmission structure also includes a knocking rod, which is installed at the other end of the transmission worm and is used for knocking the alarm bell.

8. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The on-site alarm module includes: an LED display screen, a jumper, a power cord, a signal receiver, a DC power supply, a microcontroller, a resistor, an RGB LED, a lampshade, a MOSFET, a breadboard, a buzzer, and a housing; The signal receiver receives the warning signal and transmits the warning signal to the microcontroller. The microcontroller processes the data transmission signal and transmits it to the MOSFET via the resistor. The MOSFET controls the RGB LED to emit light. The microcontroller transmits the data to the LED display screen for display. The microcontroller transmits the signal to the buzzer.

9. The self-feeding foundation pit deformation monitoring and early warning device according to claim 1 is characterized in that: The foundation pit, the laser transmitter and receiving system, and the reflective prism are all provided with a Beidou positioning system for acquiring position data of corresponding placement points.

10. The self-feeding foundation pit deformation monitoring and early warning device according to any one of claims 1 to 9, characterized in that: The reflecting prisms are arranged at various data collection points in the foundation pit, and the laser transmitter and receiving system are arranged at the upper edge of the foundation pit, so that the emitted laser can cover the reflecting prisms at various positions.

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