Active frequency conversion earth surface displacement monitoring device based on RTK

Abstract

The utility model relates to the technical field of displacement monitoring, in particular to an RTK-based active frequency conversion earth surface displacement monitoring device, which comprises a device shell, a processor, a control module, a communication module and a displacement monitoring module are arranged in the device shell, and the processor is respectively connected with the control module, the communication module and the displacement monitoring module. The displacement monitoring module comprises a starting switching module and a sensor group, and the starting switching module, the sensor group and the processor are mutually connected in pairs. The starting switching module switches working states of the acceleration sensors under the action of control signals of the processor, judges whether monitored displacement data output by the first acceleration sensor is accurate or not according to data output by the second acceleration sensor, and further judges whether faults occur or not, so that the accidental displacement problem is eliminated, data authenticity is ensured, and the working efficiency is improved. The technical problems of stability monitoring of a base station in a remote area and effective transmission of data collected by a sensor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of displacement monitoring, and in particular to an active frequency-variable surface displacement monitoring device based on RTK. Background Art

[0002] The base station surface displacement monitoring device is specifically designed to monitor ground displacement around base stations. It primarily consists of a data acquisition module, a data transmission link, and a data analysis and processing unit. Sensors accurately sense horizontal and vertical displacement of the ground around the base station. The data acquisition module collects sensor data, and the data transmission link transmits it to a data center or monitoring terminal. The data analysis and processing unit analyzes and interprets this data to determine whether ground displacement is within normal limits.

[0003] This device plays an important role in base stations in remote areas. On the one hand, it can ensure the stability of base stations. Remote areas have unstable geology, such as landslides in mountainous areas and freeze-thaw of permafrost. The device monitors in real time and can report any displacement deviations to the monitoring end in time to ensure the normal operation of the base station. On the other hand, it can prevent the impact of natural disasters. Monitoring displacement during earthquakes can protect base station equipment. For example, during floods, it can monitor displacement caused by soil erosion to provide early protection.

[0004] Existing surface displacement monitoring devices still have several issues: limited sensor functionality, data transmission even during malfunctions, and data authenticity cannot be guaranteed, impacting base station stability assessments. This is particularly true in remote, harsh environments, where sensor failures are common, hindering accurate monitoring of base station surface displacement. Data transmission and processing are also subject to delays, and weak communication infrastructure in remote areas can lead to data transmission delays and congestion, making timely data analysis and risk detection difficult. Therefore, addressing the technical challenges of base station stability monitoring in remote areas and effectively transmitting sensor-collected data is crucial. Utility Model Content

[0005] The purpose of this application is to provide an active frequency-variable surface displacement monitoring device based on RTK, which solves the technical problems of stability monitoring of base stations in remote areas and effective transmission of data collected by sensors.

[0006] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0007] The utility model provides an active frequency conversion surface displacement monitoring device based on RTK, comprising a device housing, wherein the device housing comprises a processor, a control module, a communication module, and a displacement monitoring module, wherein the processor is connected to the control module, the communication module, and the displacement monitoring module respectively; the characteristic is that the displacement monitoring module comprises a start switching module and a sensor group, wherein the start switching module, the sensor group, and the processor are interconnected in pairs;

[0008] The start-up and switching module is used to start and switch the sensors in the sensor group.

[0009] In some embodiments, the startup switching module includes a locking module and a selection module, wherein the input end of the locking module is connected to the processor as the input end of the startup switching module, the output end of the locking module is connected to the input end of the selection module, and the output end of the selection module is connected to the sensor group as the output end of the startup switching module;

[0010] The locking module is used to lock the control signal sent by the processor;

[0011] The selection module is used to select and start the sensors in the sensor group to make them work.

[0012] In some embodiments, the locking module includes a first triode, a second triode, a third triode, and multiple resistors. The base of the first triode and the base of the third triode are respectively set as the input end of the locking module, the collector of the first triode is connected to the base of the second triode, the emitter of the second triode, the emitter of the first triode, and the collector of the third triode through the resistor, and the collector of the first triode is connected to the power supply; the collector of the second triode is connected to the base of the third triode through the resistor, and the collector of the second triode is grounded through the resistor; the emitter of the third triode is set as the output end of the locking module, and the emitter of the third triode is grounded through the resistor.

[0013] In some embodiments, the selection module includes a field effect tube, a first diode, and a second diode. The source of the field effect tube is connected to a power supply, the drain of the field effect tube is connected to the anode of the first diode, the gate of the field effect tube serves as the input end of the selection module, and the gate of the field effect tube is connected to the anode of the second diode. The cathode of the first diode and the cathode of the second diode are respectively set as the output ends of the selection module.

[0014] In some embodiments, the sensor group includes a first acceleration sensor and a second acceleration sensor, the enable end of the first acceleration sensor and the enable end of the second acceleration sensor are respectively connected to the output end of the startup switching module, and the data output end of the first acceleration sensor and the data output end of the second acceleration sensor are both connected to the data receiving end of the processor.

[0015] In some embodiments, the communication module includes a LORA module and a GNSS module, and the LORA module and the GNSS module are respectively connected to the processor.

[0016] In some embodiments, the control module includes an isolation relay and a status indicator light, and the processor is connected to the status indicator light through the isolation relay.

[0017] In some embodiments, an interface module is further included, and the interface module is connected to the processor; the interface module includes an isolated RS485 interface and a USB interface.

[0018] In some embodiments, a storage module is further included, and the storage module is connected to the processor; the storage module is an EMMC memory, and the model of the EMMC memory is KLM8G1GETF-B041.

[0019] In some embodiments, the processor model is STM32F407VET6.

[0020] The technical solution of this application has at least the following advantages and beneficial effects:

[0021] 1. In order to solve the problem that satellite data cannot be properly processed and transmitted in remote areas or areas with poor network coverage, the utility model uses LORA communication to realize data interaction between base stations and measuring stations without the need for mobile networks, so that related work can also be carried out in areas without signals; in terms of data transmission and solution, local differential solution can be completed in the device, and there is no need to return data to the server for differential solution, which reduces the transmission path and amount and improves efficiency.

[0022] 2. The utility model is designed with a startup switching module. This module switches the working state of the acceleration sensor through the control signal of the processor. After the switch, the data output by the second acceleration sensor is used to determine whether the data output by the first acceleration sensor that monitors the displacement data is accurate. Based on the accuracy of the data, it is further determined whether the first acceleration sensor is faulty, eliminating accidental displacement problems and ensuring the authenticity of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is the circuit diagram of the startup switching module of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. Terms such as "center," "upper," "lower," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the figures, or the positions or locations in which the product is typically placed when in use. These terms are used solely for ease of description and simplification of the present application. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific orientation, and are not to be construed as limiting the present application. It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application in specific contexts.

[0027] Example 1

[0028] Please refer to Figure 1-Figure 2 The utility model provides an active frequency-variable surface displacement monitoring device based on RTK, which is the same as the existing technology and includes a device shell. The device shell includes a processor, a control module, a communication module, and a displacement monitoring module. The processor is connected to the control module, the communication module, and the displacement monitoring module respectively.

[0029] A sensor group includes a first acceleration sensor and a second acceleration sensor, wherein an enable terminal of the first acceleration sensor and an enable terminal of the second acceleration sensor are respectively connected to an output terminal of the startup switching module, and a data output terminal of the first acceleration sensor and a data output terminal of the second acceleration sensor are both connected to a data receiving terminal of the processor;

[0030] It should be noted that the models of the first acceleration sensor and the second acceleration sensor are both ADXL345BCCZ-RL7.

[0031] As an alternative, the sensor group includes but is not limited to a displacement sensor, a vibration sensor, and an inclination sensor.

[0032] It should be explained that in this embodiment, the sensor group monitors in real time to obtain the inclination and acceleration data of the GNSS station, and transmits the data to the processor for processing; the processor determines whether it is necessary to change the return frequency of the solution data based on the received data, thereby speeding up data transmission.

[0033] In this embodiment, the processor model is STM32F407VET6.

[0034] The communication module includes a LORA module and a GNSS module, and the LORA module and the GNSS module are connected to the processor respectively;

[0035] The LORA module in the device communicates wirelessly with the terminal device to transmit satellite data, solution data, command information and other information; the model of the LORA module is A39T2G4A12D1A;

[0036] GNSS module, including a GNSS board and a GNSS antenna. The GNSS antenna receives satellite data and transmits the data to the GNSS board, which then sends the data to the processor via the RS232 serial port.

[0037] It should be noted that the model of the GNSS board is: K803S.

[0038] A control module includes an isolation relay and a status indicator light, wherein the processor is connected to the status indicator light via the isolation relay;

[0039] Isolation relay, used to control the operation of external devices according to the signal sent by the processor; the isolation relay model is BFS-3CH-12V;

[0040] Status indicator light, used to indicate the operating status of the device, including but not limited to power indicator light, LORA communication status indicator light, data sending indicator light, and device operation indicator light.

[0041] Different from the prior art, the displacement monitoring module includes a start-up switching module and a sensor group. The start-up switching module, the sensor group and the processor are interconnected in pairs. The start-up switching module is used to start and switch the sensors in the sensor group.

[0042] The startup switching module includes a locking module and a selection module. The input end of the locking module is connected to the processor as the input end of the startup switching module, the output end of the locking module is connected to the input end of the selection module, and the output end of the selection module is connected to the sensor group as the output end of the startup switching module.

[0043] A locking module, used to lock the control signal sent by the processor;

[0044] The selection module is used to select and start the sensors in the sensor group to make them work.

[0045] The locking module includes a first triode, a second triode, a third triode, and multiple resistors. The base of the first triode and the base of the third triode are respectively set as the input end of the locking module. The collector of the first triode is connected to the base of the second triode, the emitter of the second triode, the emitter of the first triode, and the collector of the third triode through the resistor, and the collector of the first triode is connected to the power supply; the collector of the second triode is connected to the base of the third triode through the resistor, and the collector of the second triode is grounded through the resistor; the emitter of the third triode is set as the output end of the locking module, and the emitter of the third triode is grounded through the resistor;

[0046] The selection module includes a field effect tube, a first diode, and a second diode. The source of the field effect tube is connected to a power supply, the drain of the field effect tube is connected to the anode of the first diode, the gate of the field effect tube serves as the input end of the selection module, and the gate of the field effect tube is connected to the anode of the second diode. The cathode of the first diode and the cathode of the second diode are respectively set as the output ends of the selection module.

[0047] Furthermore, the startup switching module includes a first transistor Q1, a second transistor Q2, a third transistor Q3, a field effect transistor Q4, capacitors C1 and C2, a first diode D1 and a second diode D2, and resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and R11;

[0048] Among them, the locking module includes a first transistor Q1, a second transistor Q2, a third transistor Q3, and resistors R1, R2, R3, R5, R6, R7, R8, and R9; the selection module includes a field effect transistor Q4, capacitors C1 and C2, a first diode D1, a second diode D2, and resistors R4, R10, and R11;

[0049] Specifically, one end of the resistor R1 is set to the COM_IN2 input end, the other end of the resistor R1 is connected to the base of the first transistor Q1, the collector of the first transistor Q1, one end of the resistor R2, and one end of the resistor R3 are connected, the other end of the resistor R2, one end of the resistor R4, one end of the capacitor C1, and the source of the field effect transistor Q4 are connected, the other end of the resistor R4 and the other end of the capacitor C1 are connected and grounded; the other end of the resistor R3, the emitter of the first transistor Q1, the collector of the second transistor Q2, one end of the resistor R5, and the emitter of the third transistor Q2 are connected, the other end of the resistor R5 is connected to the base of the second transistor Q2, the collector of the second transistor Q2, one end of the resistor R6, one end of the resistor R7, and one end of the resistor R8, and the resistor R The other end of 7 is set as the COM_IN1 input terminal; the other end of the resistor R6 is connected to the base of the third transistor Q2, the emitter of the third transistor Q2, one end of the resistor R9, one end of the capacitor C2, the gate of the field effect transistor Q4, and the anode of the second diode D2 are connected, the other end of the resistor R8, the other end of the resistor R9, and the other end of the capacitor C2 are connected and grounded; the drain of the field effect transistor Q4 is connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to one end of the resistor R10, and the COM_OUT2 output terminal is set here; the cathode of the second diode D2 is connected to one end of the resistor R11, and the COM_OUT1 output terminal is set here, the other end of the resistor R10 and the other end of the resistor R11 are connected and grounded.

[0050] It should be noted that the first transistor Q1 and the third transistor Q2 are both NPN type, and their model is S9013; the second transistor Q2 is a PNP type, and its model is S8550; the field effect transistor Q4 is a PMOS tube, and its model is AO3401A.

[0051] It should be noted that the COM_IN1 input terminal and the COM_IN2 input terminal are respectively connected to the pins of the processor, the COM_OUT1 output terminal is connected to the first acceleration sensor, and the COM_OUT2 output terminal is connected to the second acceleration sensor;

[0052] It should be explained that, in this embodiment, when the enable terminal of the first acceleration sensor or the second acceleration sensor receives a low level, the acceleration sensor starts to work;

[0053] For ease of understanding, the workflow of the startup switching module of the present invention is as follows:

[0054] Under normal conditions, the COM_OUT1 output terminal outputs a low level, and the COM_OUT2 output terminal outputs a high level. At this time, the first acceleration sensor begins to monitor the displacement data in real time, and the second acceleration sensor does not work.

[0055] The data detected by the first acceleration sensor is transmitted to the processor. If the processor determines that the data exceeds the reference threshold, it determines that the device is in an abnormal state and sends a control signal to the COM_IN1 input terminal. At this time, the COM_OUT1 output terminal outputs a high level and the COM_OUT2 output terminal outputs a low level. That is, the first acceleration sensor does not work at this time, and the second acceleration sensor starts to monitor the displacement data;

[0056] If the data monitored by the second acceleration sensor is also abnormal data, it is determined that the displacement of the device has deviated; at this time, the device speeds up the return of the calculated data to provide more effective data for monitoring and analysis.

[0057] If the data monitored by the second acceleration sensor is normal data, it is determined that the first acceleration sensor may be faulty.

[0058] In some embodiments, this module can also be used to rotate activating acceleration sensors placed in different locations to prevent misjudgment due to missing tiny displacement details. Rotating detection can avoid a single acceleration sensor from working continuously, reducing its frequency of use, reducing the risk of damage, and thus reducing sensor errors.

[0059] In this embodiment, an interface module is also included, and the interface module is connected to the processor; the interface module includes an isolated RS485 interface and a USB interface;

[0060] Isolated RS485 interface for connecting sensors to external RS485 bus;

[0061] The USB interface is used to connect to laptop computers, handheld debuggers and other devices to read local data and configure parameters of the device.

[0062] In this embodiment, a storage module is also included. The storage module is used to store the solution data of the measuring station and the external sensor data, and is connected to the processor. The storage module is an EMMC memory, and the model of the EMMC memory is KLM8G1GETF-B041.

[0063] In this embodiment, a power supply module is also included, which is used to provide power to the device, external sensors, etc.

[0064] It should be noted that the above-mentioned electronic devices can be purchased in domestic and foreign markets.

[0065] In remote areas or areas with poor network coverage, it is impossible to process and transmit satellite data normally. This device uses LORA communication to realize data interaction between base stations and measurement stations without the need for mobile networks, so that related work can be carried out in areas without signals. In terms of data transmission and solution, local differential solution can be completed on the device side, without the need to return data to the server and perform differential solution in the server, which reduces the transmission path and amount and improves efficiency.

[0066] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details known in the art have been omitted. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An RTK-based active frequency-conversion surface displacement monitoring device, comprising a device housing containing a processor, a control module, a communication module, and a displacement monitoring module, wherein the processor is connected to the control module, the communication module, and the displacement monitoring module, respectively; characterized in that: The displacement monitoring module includes a start-up switching module and a sensor group, wherein the start-up switching module, the sensor group and the processor are connected to each other in pairs; The start-up and switching module is used to start and switch the sensors in the sensor group.

2. The active frequency conversion surface displacement monitoring device based on RTK according to claim 1, characterized in that: The startup switching module includes a locking module and a selection module, wherein the input end of the locking module is connected to the processor as the input end of the startup switching module, the output end of the locking module is connected to the input end of the selection module, and the output end of the selection module is connected to the sensor group as the output end of the startup switching module; The locking module is used to lock the control signal sent by the processor; The selection module is used to select and start the sensors in the sensor group to make them work.

3. The RTK-based active frequency conversion surface displacement monitoring device according to claim 2, characterized in that: The locking module includes a first triode, a second triode, a third triode, and multiple resistors. The base of the first triode and the base of the third triode are respectively set as the input end of the locking module. The collector of the first triode is connected to the base of the second triode, the emitter of the second triode, the emitter of the first triode, and the collector of the third triode through the resistor, and the collector of the first triode is connected to the power supply; the collector of the second triode is connected to the base of the third triode through the resistor, and the collector of the second triode is grounded through the resistor; the emitter of the third triode is set as the output end of the locking module, and the emitter of the third triode is grounded through the resistor.

4. The active frequency conversion surface displacement monitoring device based on RTK according to claim 2, characterized in that: The selection module includes a field effect tube, a first diode, and a second diode. The source of the field effect tube is connected to a power supply, the drain of the field effect tube is connected to the anode of the first diode, the gate of the field effect tube serves as the input end of the selection module, and the gate of the field effect tube is connected to the anode of the second diode. The cathode of the first diode and the cathode of the second diode are respectively set as the output ends of the selection module.

5. The RTK-based active frequency conversion surface displacement monitoring device according to claim 2, characterized in that: The sensor group includes a first acceleration sensor and a second acceleration sensor. The enable end of the first acceleration sensor and the enable end of the second acceleration sensor are respectively connected to the output end of the startup switching module. The data output end of the first acceleration sensor and the data output end of the second acceleration sensor are both connected to the data receiving end of the processor.

6. The active frequency conversion surface displacement monitoring device based on RTK according to claim 1, characterized in that: The communication module includes a LORA module and a GNSS module, and the LORA module and the GNSS module are respectively connected to the processor.

7. The active frequency conversion surface displacement monitoring device based on RTK according to claim 1, characterized in that: The control module includes an isolation relay and a status indicator light, and the processor is connected to the status indicator light through the isolation relay.

8. The RTK-based active frequency conversion surface displacement monitoring device according to claim 1, characterized in that: It also includes an interface module, which is connected to the processor; the interface module includes an isolated RS485 interface and a USB interface.

9. The active frequency conversion surface displacement monitoring device based on RTK according to claim 1, characterized in that: It also includes a storage module, which is connected to the processor; the storage module is an EMMC memory, and the model of the EMMC memory is KLM8G1GETF-B041.

10. The active frequency conversion surface displacement monitoring device based on RTK according to claim 1, characterized in that: The model of the processor is STM32F407VET6.

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