Portable multimode fusion positioning 4G pressure monitoring device and monitoring method

Abstract

The invention discloses a portable multi-mode fusion positioning 4G pressure monitoring device and monitoring method, and relates to the technical field of gas pressure monitoring, the portable multi-mode fusion positioning 4G pressure monitoring device comprises a tee joint, a cavity ejector pin, a check valve and an air pressure interface, the air pressure interface is matched with a handheld terminal, and a mechanical watch is matched with the tee joint and used for displaying the internal pressure of the tee joint; the mechanical watch is in signal connection with the handheld terminal; the handheld terminal comprises a multi-mode positioning module, a 4G transmission module, a pressure sensor and a central processing controller. The multi-mode positioning module, the 4G transmission module and the pressure sensor are all in signal connection with the central processing controller. Based on a 4G transmission function and a multi-mode positioning technology, data acquisition, fusion positioning and remote transmission are realized; the ejector pin can be inserted into the pipe cavity and can also be connected through the pipeline adapter, so that the acquisition of various pipeline air pressure data is realized; a mechanical pressure gauge is installed at the front end of the sensor to achieve checking of the equipment acquisition sensor, and data accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pressure monitoring, and more specifically to a portable multi-mode fusion positioning 4G pressure monitoring device and a monitoring method. Background Art

[0002] In modern industrial production, project construction and engineering acceptance, lumen gas pressure monitoring has become an indispensable part. Whether it is petrochemical, environmental monitoring and project management, or public facility management, abnormal lumen sealing may bring serious safety hazards.

[0003] However, the traditional portable gas pressure detectors cannot transmit pressure data and alarm data, forming data islands, which makes it difficult to meet the high requirements of modern safety and project management. Especially in complex and changing operating environments, the lack of platform management data often becomes a hotbed of safety hazards. In order to effectively make up for this defect, the 4G portable gas detector came into being. With its portability, efficiency and accuracy, it has become an important tool for improving the level of safety management.

[0004] Therefore, how to propose a portable multi-mode fusion positioning 4G pressure monitoring device and monitoring method to improve the portability, efficiency and accuracy of detection and enhance the level of safety management is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the present invention provides a portable multi-mode fusion positioning 4G pressure monitoring device and monitoring method, which improves the portability, efficiency and accuracy of detection and enhances the level of safety management. In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A portable multi-mode fusion positioning 4G pressure monitoring device, comprising: a cavity ejector, a tee, a check valve, a mechanical meter, a pneumatic interface and a handheld terminal;

[0007] The three-way connection is sealed and connected to the cavity ejector pin, the check valve and the air pressure interface respectively, the air pressure interface is adapted to the handheld terminal, the mechanical meter is adapted and installed to display the internal pressure of the three-way connection, and the mechanical meter is connected to the handheld terminal signal;

[0008] The handheld terminal includes a multi-mode positioning module, a 4G transmission module, a pressure sensor and a central processing controller. The multi-mode positioning module, the 4G transmission module and the pressure sensor are all connected to the central processing controller by signal.

[0009] Optionally, the handheld terminal further comprises a housing, and the multi-mode positioning module, the 4G transmission module, the pressure sensor and the central processing controller are installed in the housing. Specifically, the model of the multi-mode positioning module is LC29HDA.

[0010] Optionally, the central processing controller is a D211DBV chip.

[0011] Optionally, it also includes a display screen, which is an LCD display screen. The display screen is opened on the shell, and the display screen is connected to the central processing controller signal.

[0012] Optionally, the pressure sensor is connected to the air pressure interface to collect pressure data at the air pressure interface.

[0013] Optionally, the central processing controller further includes: a QSPI interface, a GPIO interface, a UART interface, a TF card interface, a USB HOST interface, a 512Mb DDR2 SDRAM interface and a power supply management module, and the QSPI interface, the GPIO interface, the UART interface, the TF card interface, the USB HOST interface, the 512Mb DDR2 SDRAM interface and the power supply management module are all connected to the central processing controller by signal. Specifically, the specific model of the power supply management module is an IP2312U power battery management chip.

[0014] Optionally, a keyboard is also included, and the keyboard is connected to the central processing controller signal via a GPIO interface.

[0015] Optionally, a portable multi-mode fusion positioning 4G pressure monitoring method includes:

[0016] When measuring pressure, the cavity ejector is inserted into the tube cavity, and the air pressure interface and the handheld terminal are connected through a hose. The pressure data is collected in real time by the pressure sensor and transmitted to the central processing controller;

[0017] The central processing controller outputs the collected data to the LCD display screen through the QSPI interface;

[0018] Choose whether to upload data through the keyboard of the handheld terminal. When you choose to upload data, the central processing controller receives the keyboard signal through the GPIO interface. The central processing controller processes the data and uploads the real-time collected pressure sensor data and positioning data to the remote server through the 4G transmission module.

[0019] When the central processing controller receives the keyboard end signal, the central processing controller sends a stop data transmission signal to the 4G transmission module, and the 4G transmission module stops data transmission. At the same time, the central processing controller sends a frequency reduction signal to the multi-mode positioning module, and the multi-mode positioning module reduces the positioning frequency, thereby reducing the power consumption of the multi-mode positioning module.

[0020] Optionally, it also includes: calibrating the pressure sensor range in the handheld terminal through a mechanical meter, inputting mechanical measurement data of different range points through the keyboard of the handheld terminal, the central processing controller receives the pressure sensor data, and calculates the collected pressure sensor data and preset range points through a calibration algorithm to calibrate the pressure sensor range.

[0021] Optionally, it also includes: querying data by clicking on the keyboard, transmitting the query signal to the central processing controller through GPIO, the central processing controller processes the data and sends the request to the remote server through the 4G transmission module, the remote server returns the requested data query result to the 4G transmission module, the 4G transmission module transmits the data to the central processing controller through the GPIO interface, the central processing controller processes the data and displays the data on the LCD display through the QSPI interface.

[0022] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a portable multi-mode fusion positioning 4G pressure monitoring device and a monitoring method, which have the following beneficial effects:

[0023] The present invention proposes a portable multi-mode fusion positioning 4G pressure monitoring device, comprising: a cavity ejector, a tee, a check valve, a mechanical meter, an air pressure interface and a handheld terminal; the tee is sealed and connected to the cavity ejector, the check valve and the air pressure interface respectively, the air pressure interface is adapted to the handheld terminal, the mechanical meter is adapted and installed to display the internal pressure of the tee, and the mechanical meter is connected to the handheld terminal signal; the handheld terminal includes a multi-mode positioning module, a 4G transmission module, a pressure sensor and a central processing controller, and the multi-mode positioning module, the 4G transmission module and the pressure sensor are all connected to the central processing controller signal. Based on the 4G transmission function and multi-mode positioning technology, the present invention realizes data collection, fusion positioning and remote transmission. Rich data acquisition interfaces, which can be inserted into the lumen by ejector pins or connected through pipeline adapters, to realize the collection of various pipeline air pressure data; convenient physical operation buttons to improve user work efficiency; accurate data verification, a mechanical pressure gauge is installed at the front end of the sensor to realize the verification of the equipment collection sensor, ensuring the accuracy of the data; intelligent data processing and remote interaction, the handheld terminal application interacts with the remote server program in real time to realize one-click data upload and download. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a portable multi-mode fusion positioning 4G pressure monitoring device provided by the present invention.

[0026] Figure 2 This is a structural principle diagram of a portable multi-mode fusion positioning 4G pressure monitoring device provided by the present invention.

[0027] Figure 3 The normal probability plot provided by the present invention.

[0028] Figure 4 This is a graph of the regression calculation results of variable 1 provided by the present invention.

[0029] Figure 5 This is a graph of the regression calculation results of variable 2 provided by the present invention.

[0030] Figure 6 This is a graph of the regression calculation results of variable 3 provided by the present invention.

[0031] Among them, 1-cavity ejector pin, 2-tee, 3-check valve, 4-mechanical meter, 5-air pressure interface, 6-handheld terminal. DETAILED DESCRIPTION

[0032] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present invention discloses a portable multi-mode fusion positioning 4G pressure monitoring device, such as Figure 1 As shown, it includes: a cavity ejector 1, a tee 2, a check valve 3, a mechanical meter 4, a pneumatic interface 5 and a handheld terminal 6;

[0034] The three-way connection 2 is respectively sealed and connected to the cavity ejector pin 1, the check valve 3 and the air pressure interface 5, the air pressure interface 5 is adapted to the handheld terminal 6, the mechanical meter 4 is adapted and installed to the three-way connection 2, and is used to display the internal pressure of the three-way connection 2, and the mechanical meter 4 is connected to the handheld terminal 6 by signal;

[0035] The handheld terminal 6 includes a multi-mode positioning module, a 4G transmission module, a pressure sensor and a central processing controller. The multi-mode positioning module, the 4G transmission module and the pressure sensor are all connected to the central processing controller by signal.

[0036] Furthermore, the handheld terminal 6 also includes a shell, and the multi-mode positioning module, 4G transmission module, pressure sensor and central processing controller are installed in the shell.

[0037] Furthermore, the central processing controller is a D211DBV chip.

[0038] Furthermore, it also includes a display screen, which is an LCD display screen. The display screen is opened on the shell, and the display screen is connected to the central processing controller signal.

[0039] Furthermore, the pressure sensor is connected to the air pressure interface 5 for collecting pressure data at the air pressure interface 5 .

[0040] Furthermore, the central processing controller also includes: a QSPI interface, a GPIO interface, a UART interface, a TF card interface, a USB HOST interface, a 512Mb DDR2 SDRAM interface and a power supply management module, and the QSPI interface, GPIO interface, UART interface, TF card interface, USB HOST interface, 512Mb DDR2 SDRAM interface and power supply management module are all connected to the central processing controller signal.

[0041] Furthermore, it also includes a keyboard, which is connected to the central processing controller signal through a GPIO interface.

[0042] In a specific implementation, a portable multi-mode fusion positioning 4G pressure monitoring method includes:

[0043] When measuring pressure, the cavity ejector pin 1 is inserted into the tube cavity, and the air pressure interface 5 and the handheld terminal 6 are connected through a hose, and the pressure data is collected in real time by the pressure sensor and transmitted to the central processing controller;

[0044] The central processing controller outputs the collected data to the LCD display screen through the QSPI interface;

[0045] Whether to upload data is selected through the keyboard of the handheld terminal 6. When data upload is selected, the central processing controller receives the keyboard signal through the GPIO interface, and the central processing controller processes the data and uploads the real-time collected pressure sensor data and positioning data to the remote server through the 4G transmission module;

[0046] When the central processing controller receives the keyboard end signal, the central processing controller sends a stop data transmission signal to the 4G transmission module, and the 4G transmission module stops data transmission. At the same time, the central processing controller sends a frequency reduction signal to the multi-mode positioning module, and the multi-mode positioning module reduces the positioning frequency, thereby reducing the power consumption of the multi-mode positioning module.

[0047] In a specific implementation, it also includes: calibrating the pressure sensor range in the handheld terminal 6 through the mechanical meter 4, inputting mechanical measurement data of different range points through the keyboard of the handheld terminal 6, the central processing controller receives the pressure sensor data, and calculates the collected pressure sensor data and the preset range points through the calibration algorithm to calibrate the pressure sensor range.

[0048] In a specific implementation, it also includes: clicking data query through the keyboard, the query signal is transmitted to the central processing controller through GPIO, the central processing controller processes the data and sends the request to the remote server through the 4G transmission module, the remote server returns the requested data query result to the 4G transmission module, the 4G transmission module transmits the data to the central processing controller through the GPIO interface, the central processing controller processes the data and displays the data on the LCD display through the QSPI interface.

[0049] In a specific implementation, a portable multi-mode fusion positioning 4G pressure monitoring device structure principle, such as Figure 2 As shown, it includes: central processing controller D211DBV chip, air pressure interface, pressure sensor, LCD display, positioning antenna, multi-mode positioning module, 4G transmission module, keyboard, storage unit, Bluetooth module, USB interface, charging management module, battery and power supply module;

[0050] The air pressure interface is connected to the pressure sensor, and the pressure sensor is connected to the central processing controller signal through the UART interface, the LCD display is connected to the central processing controller signal, the Bluetooth module is connected to the central processing controller signal through the UART interface, the USB interface is connected to the charging management module and the power supply module respectively, the charging management module is connected to the power supply module through a battery, the power supply module is connected to the power supply management module signal, the storage unit is connected to the central processing controller signal through the TF card interface, the keyboard is connected to the central processing controller signal through the GPIO interface, the 4G transmission module is connected to the central processing controller signal through the USB HOST interface, the positioning antenna is connected to the multi-mode positioning module, and the multi-mode positioning module is connected to the central processing controller signal through the UART interface.

[0051] Specifically, the model of the charging management module is an IP2312U chip, and the model of the power supply module is an IP2312U chip.

[0052] In a specific implementation, a portable multi-mode fusion positioning 4G pressure monitoring device is composed of a cavity ejector pin 1, a check valve 3, a tee 2, a mechanical meter 4, a pressure interface 5 and a handheld terminal 6. The handheld terminal 6 and the contact end of the tee 2 have a built-in pressure sensor. The central processing controller uses a D211DBV chip to realize pressure data collection, data display, data upload, data query and electronic sensor calibration of the handheld terminal;

[0053] When the user measures the pressure, he only needs to insert the ejector pin into the tube cavity or connect it to the air pressure interface 5 through a hose. The pressure sensor collects the pressure data in real time and transmits it to the central processing controller of the handheld terminal. The central processing controller of the handheld terminal outputs the collected data on the LCD display screen through the QSPI interface and displays it to the user.

[0054] The user selects whether to upload data through the keyboard of the handheld terminal 6. When the user selects to upload data, the central processing controller of the handheld terminal receives the keyboard signal through the GPIO interface, and the central processing controller of the handheld terminal processes the data and uploads the real-time collected pressure sensor data and positioning data to the remote server through the 4G transmission module;

[0055] When the central processing controller of the handheld terminal 6 receives the end signal of the user's keyboard, the central processing controller of the handheld terminal 6 sends a stop data transmission signal to the 4G transmission module, and the 4G transmission module stops data transmission. At the same time, the central processing controller sends a frequency reduction signal to the multi-mode positioning module, and the multi-mode positioning module reduces the positioning frequency, thereby reducing the power consumption of the multi-mode positioning module;

[0056] The user can check the pressure sensor range of the handheld terminal 6 through the mechanical measuring table. The user inputs the mechanical measurement data of different range points at one time through the keyboard of the mobile terminal 6. The central processing controller of the handheld terminal 6 receives the data and transmits it to the correction acquisition conversion algorithm in the pressure sensor module to ensure the accuracy of the collected data.

[0057] The user can query data by clicking on the keyboard button, and the query signal is transmitted to the central processing controller of the handheld terminal 6 through GPIO. The central processing controller of the handheld terminal 6 processes the data and sends the request to the remote server through the 4G transmission module. The server application platform transmits the requested data query result back to the 4G transmission module of the handheld terminal. The 4G transmission module transmits the data to the central processing controller of the handheld terminal 6 through the GPIO interface. The central processing controller of the handheld terminal processes the data and displays the data on the LCD display through the QSPI interface.

[0058] In the specific implementation, a pressure sensor diffused silicon pressure calibration algorithm based on high and low altitudes and temperature is also proposed, which mainly solves the data acquisition accuracy of the pressure sensor in high and low altitude areas. The user selects the working mode of the device (high altitude / low altitude) according to the altitude of the working condition, and the handheld terminal loads the corresponding pressure sensor value algorithm according to the user's selection, which specifically includes:

[0059] The handheld terminal uses diffused silicon pressure sensors. Temperature and air pressure (high and low altitudes) have a great impact on the accuracy of the sensor. In order to improve the sensor accuracy, the handheld terminal automatically and manually calibrates the sensor based on the internal sensor signal conditioning chip (programmable) and multi-mode positioning sensor (which can collect elevation).

[0060] Automatic calibration: It mainly solves the problem of large temperature change environment and high and low altitude working conditions, and replaces the manual calibration of users to ensure that the pressure collected by the equipment is relatively accurate. This algorithm obtains the temperature obtained by the sensor signal conditioning chip at 0 value in real time in the non-working state and the altitude data of the handheld terminal, and makes real-time revisions according to the historically stored calibration curve, and dynamically modifies the zero point error and temperature drift, sensitivity error and temperature drift, and nonlinearity error of the sensor signal in the sensor signal conditioning chip to achieve the optimal result.

[0061] Manual calibration algorithm: During manual calibration, the current temperature and altitude are collected in real time. Users can calibrate the pressure sensor of the handheld terminal based on the front-end mechanical meter to ensure the readiness of data collection. In order to accurately calibrate the pressure sensor, a calibration algorithm is proposed. This algorithm is divided into zero calibration, full calibration, process calibration and intelligent calibration reminder. The calibration is divided into three steps: zero calibration, full calibration and process calibration. The calibration can be completed only after the three steps are completed.

[0062] Step 1: Zero calibration

[0063] In the handheld terminal application, click Sensor Calibration to enter the data calibration page, create a new calibration task, and click Zero Calibration: Check whether the mechanical meter shows 0. When the mechanical meter shows 0, the user clicks the confirmation button on the handheld terminal keyboard. The handheld terminal obtains the current sensor pressure and the mechanical meter 0 value and stores them in the storage unit, and determines the current sensor pressure. When the two data are different, the handheld terminal records and stores them, waiting for the final calibration correction.

[0064] Step 2: Full-scale calibration

[0065] In the handheld terminal application, click Sensor Calibration to enter the data calibration page, select the calibration task, and click Zero Calibration: Use the pressurizing device to pressurize the device to the maximum value, and check whether the mechanical meter displays the maximum pressure value (the maximum pressure value of the mechanical meter is consistent with the sensor pressure value). When the mechanical meter displays the maximum value, the user clicks the confirmation button on the handheld terminal keyboard. The handheld terminal obtains the current sensor pressure and the maximum value of the mechanical meter and stores them in the handheld terminal memory, and determines the current sensor pressure. When the two data are different, the handheld terminal records and stores them, waiting for the final calibration and correction.

[0066] Step 3: Process verification

[0067] In the handheld terminal application, click Sensor Calibration, enter the data calibration page, select the calibration task, and click Process Calibration: the user selects from high to low or 0 to high, and sets the value interval, and calibrates the value every 10kpa, 100kpa, 1000kpa, etc., multiples of 10. For example: the sensor takes values ​​at intervals of 50kpa, 100kpa, etc. on the mechanical table, and clicks Confirm. The handheld terminal will automatically record the pressure of the sensor at each value and compare the data. After the calibration is completed, click Cancel to end the value operation.

[0068] Step 4: Data verification algorithm formula

[0069] The sensor signal conditioning chip of the existing sensor is affected by certain examples and is limited to a certain order of sensor nonlinear fitting calibration and a certain order of temperature coefficient calibration. This embodiment uses an external algorithm to assist in calibration, so that the accuracy of the calculation is more in line with reality, breaking through the calculation limitation, and performing multivariate AI calibration for compensation. When the above three steps are completed, the user clicks on the task to select the calibration value to view, and the handheld terminal displays the sensor collected values ​​and mechanical meter values ​​during the calibration process on the LCD screen as shown in Table 1 below:

[0070] Table 1 Data collected in real time by handheld terminal

[0071]

[0072] The handheld terminal uploads the data to the remote server, and calibrates the above data based on the multivariate linear regression equation. The formula is as follows:

[0073] Y=β0+β1X1+β2X2+β3X3+∈;

[0074] Among them, Y is the dependent variable, β0 is the intercept term, β1, β2, β3 are the coefficients of the independent variables X1, X2, X3 respectively, and ∈ is the error term.

[0075] The specific regression equation is as follows:

[0076] Y=6.557442522+125.6095037X1-0.465299795X2+0.003667962X3;

[0077] Among them, the intercept term Intercept: 6.557442522, the coefficient of X1: 125.6095037, the coefficient of X2: -0.465299795, and the coefficient of X3: 0.003667962.

[0078] The results of regression calculation, regression statistical calculation, variance analysis, residual value output and probability output are shown in Table 2, Table 3, Table 4, Table 5 and Table 6 respectively:

[0079] Table 2 Regression calculation table

[0080]

[0081] Table 3 Regression statistical calculation data

[0082] Summarize Output Regression Statistics Multiple R 0.999883266 R-squared 0.999766546 Adjusted R-squared 0.999666495 Standard error 3.028431556 Observations 11

[0083] Table 4 Variance analysis table

[0084] ANOVA Degrees of Freedom Sum of Squares of Deviations Mean Square F-number P-value Regression analysis 3 274935.8002 91645.26674 9992.50821 4.5257E-13 Residual 7 64.19978384 9.171397692 total 10 275000

[0085] Table 5 Residual value output table

[0086] Residual value output Observations Prediction Y Residual 1 -0.055258219 0.055258219 2 46.64724997 3.35275003 3 100.863385 -0.863385003 4 148.1639561 1.836043894 5 201.9377347 -1.93773472 6 254.0014346 -4.001434631 7 301.3975182 -1.397518246 8 349.1992436 0.800756435 9 403.276858 -3.276858049 10 446.5814541 3.418545884 11 497.9864238 2.013576188

[0087] Table 6 Probability output

[0088] Probability Output Table Percentage ranking Y 4.545454545 0 13.63636364 50 22.72727273 100 31.81818182 150 40.90909091 200 50 250 59.09090909 300 68.18181818 350 77.27272727 400 86.36363636 450 95.45454545 500

[0089] Normal probability is Figure 3 As shown, the regression calculation results of variable 1 are as follows Figure 4 As shown, the regression calculation results of variable 2 are as follows Figure 5 As shown, the regression calculation results of variable 3 are as follows Figure 6 shown.

[0090] After the data fitting is completed, the server sends the calibration results to the handheld terminal, which receives the data and writes it into the sensor signal conditioning chip.

[0091] Step 4: Smart verification reminder

[0092] Each calibration process is automatically uploaded to the back-end system platform. The system records the calibration times and values ​​of each terminal. The system automatically analyzes the value change process of each handheld terminal sensor and automatically reminds the user to calibrate.

[0093] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0094] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable multi-mode fusion positioning 4G pressure monitoring device, characterized in that: include: Cavity ejector pin (1), three-way valve (2), check valve (3), mechanical meter (4), air pressure interface (5) and handheld terminal (6); The three-way connection (2) is respectively sealed and connected to the cavity ejector pin (1), the check valve (3) and the air pressure interface (5); the air pressure interface (5) is adapted to the handheld terminal (6); the mechanical meter (4) is adapted to be installed on the three-way connection (2) and is used to display the internal pressure of the three-way connection (2); the mechanical meter (4) is connected to the handheld terminal (6) by signal; The handheld terminal (6) comprises a multi-mode positioning module, a 4G transmission module, a pressure sensor and a central processing controller, and the multi-mode positioning module, the 4G transmission module and the pressure sensor are all connected to the central processing controller by signals.

2. A portable multi-mode fusion positioning 4G pressure monitoring device according to claim 1, characterized in that: The handheld terminal (6) also includes a housing, in which the multi-mode positioning module, the 4G transmission module, the pressure sensor and the central processing controller are installed.

3. A portable multi-mode fusion positioning 4G pressure monitoring device according to claim 1, characterized in that: The central processing controller is a D211DBV chip.

4. A portable multi-mode fusion positioning 4G pressure monitoring device according to claim 2, characterized in that: It also includes a display screen, which is an LCD display screen. The display screen is opened on the shell and is connected to the central processing controller signal.

5. The portable multi-mode fusion positioning 4G pressure monitoring device according to claim 1 is characterized in that: The pressure sensor is connected to the air pressure interface (5) and is used to collect pressure data output by the air pressure interface (5).

6. The portable multi-mode fusion positioning 4G pressure monitoring device according to claim 1 is characterized in that: The central processing controller also includes: a QSPI interface, a GPIO interface, a UART interface, a TF card interface, a USB HOST interface, a 512MbDDR2 SDRAM interface and a power supply management module, and the QSPI interface, GPIO interface, UART interface, TF card interface, USB HOST interface, 512Mb DDR2 SDRAM interface and power supply management module are all connected to the central processing controller signal.

7. A portable multi-mode fusion positioning 4G pressure monitoring device according to claim 6, characterized in that: It also includes a keyboard, which is connected to the central processing controller signal through a GPIO interface.

8. A portable multi-mode fusion positioning 4G pressure monitoring method, characterized in that: include: When measuring pressure, the cavity ejector pin (1) is inserted into the tube cavity, and the air pressure interface (5) and the handheld terminal (6) are connected through a hose, and the pressure data is collected in real time through the pressure sensor and transmitted to the central processing controller; The central processing controller outputs the collected data to the LCD display screen through the QSPI interface; Whether to upload data is selected through the keyboard of the handheld terminal (6). When data upload is selected, the central processing controller receives the keyboard signal through the GPIO interface, and the central processing controller processes the data and uploads the real-time collected pressure sensor data and positioning data to the remote server through the 4G transmission module; When the central processing controller receives the keyboard end signal, the central processing controller sends a stop data transmission signal to the 4G transmission module, and the 4G transmission module stops data transmission. At the same time, the central processing controller sends a frequency reduction signal to the multi-mode positioning module, and the multi-mode positioning module reduces the positioning frequency, thereby reducing the power consumption of the multi-mode positioning module.

9. A portable multi-mode fusion positioning 4G pressure monitoring method according to claim 8, characterized in that: Also includes: The range of the pressure sensor in the handheld terminal (6) is calibrated by a mechanical meter (4), mechanical measurement data at different range points are inputted through the keyboard of the handheld terminal (6), a central processing controller receives the pressure sensor data, and calculates the collected pressure sensor data and preset range points through a calibration algorithm to calibrate the pressure sensor range.

10. A portable multi-mode fusion positioning 4G pressure monitoring method according to claim 8, characterized in that: Also includes: Data query is performed by clicking on the keyboard, and the query signal is transmitted to the central processing controller through GPIO. The central processing controller processes the data and sends the request to the remote server through the 4G transmission module. The remote server returns the requested data query result to the 4G transmission module. The 4G transmission module transmits the data to the central processing controller through the GPIO interface. The central processing controller processes the data and displays the data on the LCD screen through the QSPI interface.

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