Wireless transmission digital pressure transmitter

Abstract

The invention relates to the technical field of measuring instruments, in particular to a wireless transmission digital pressure transmitter, which comprises a pressure transmitter, and is characterized in that the pressure transmitter comprises a reset magnet, an antenna, an LED indicating lamp, a right-angle antenna turning joint, a liquid crystal display screen, a toughened glass window, a hanging screw, an M6 bracket fixing hole, an instrument key and a process connecting interface; according to the scheme, by integrating multiple functional modules, temperature and pressure integrated measurement, flexible setting of multiple parameters and efficient processing and management of data are achieved; the pressure transmitter of the system supports the temperature and pressure integrated function, and different measurement requirements are met; instrument keys and upper computer software enable parameter setting to be simple and rapid; the data analysis unit of the upper computer performs deep mining on the data by using various algorithms, so that not only can pressure data be counted and analyzed, but also trends can be predicted, faults can be diagnosed, powerful support is provided for equipment maintenance and production scheduling, and the defects of a traditional system are effectively overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring instruments, and particularly to a wirelessly transmitted digital pressure transmitter. Background Art

[0002] The wireless digital pressure transmitter is designed for industrial pipeline pressure monitoring, and is a high-performance wireless digital transmitter integrating a stainless steel oil-filled core detection element, a high-precision PT100 platinum resistor of Class A, a high-precision measurement circuit, a low-power embedded single-chip microcomputer, and low-power wireless digital communication technology. It is one of the important front-end acquisition devices for the construction of the oil and gas production Internet of Things developed with the advancement of various low-power wireless communication network technologies;

[0003] The high-reliability design adapted to the industrial environment, as well as the characteristics of high precision, simple installation, convenient maintenance, environmental protection and durability, have won the recognition of users and have been widely used in major oil and gas fields across the country and other industrial pressure test fields;

[0004] Traditional pressure transmitters have relatively single functions and can only perform pressure measurement, lacking extended functions such as temperature measurement, and it is difficult to meet the requirements for integrated temperature and pressure monitoring; in terms of operation convenience, the parameter setting and debugging processes of traditional devices are cumbersome and may require professionals to complete with the help of complex tools, which is not convenient for on-site operators to quickly adjust device parameters; at the level of data processing and management, traditional systems may not be able to efficiently store and analyze a large amount of pressure data, and it is difficult to extract valuable information from the data, such as predicting pressure change trends and diagnosing potential device failures, which is not conducive to preventive maintenance and production optimization of the device;

[0005] Therefore, the present invention proposes a wirelessly transmitted digital pressure transmitter, which realizes integrated temperature and pressure measurement, flexible setting of various parameters, and efficient processing and management of data through the integration of multiple functional modules; the pressure transmitter of this system supports the integrated temperature and pressure function to meet different measurement requirements; its instrument keys (9) and the upper computer software make parameter setting simple and fast; the data analysis unit of the upper computer uses a variety of algorithms to deeply mine the data, which can not only statistically analyze the pressure data, but also predict trends and diagnose faults, providing strong support for equipment maintenance and production scheduling, and effectively solving the deficiencies of traditional systems. Summary of the Invention

[0006] Technical problems to be solved: The problems of traditional pressure transmitters with single functions, cumbersome parameter setting and debugging processes, and being not conducive to preventive maintenance and production optimization of the device.

[0007] In view of the deficiencies of the prior art, the present invention provides a wirelessly transmitted digital pressure transmitter, thereby solving the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0009] A digital pressure transmitter for wireless transmission, comprising:

[0010] A pressure transmitter, which includes a reset magnet, an antenna, an LED indicator, a right-angle antenna elbow joint, a liquid crystal display screen, a tempered glass window, a nameplate screw, an M6 bracket fixing hole, an instrument button, and a process connection interface. The pressure transmitter has multiple model types with different wireless forms, ranges, process interfaces, power supply methods, and explosion-proof forms;

[0011] A lower computer, which includes a 32-bit microprocessor and a 24-bit ADC;

[0012] An upper computer, which is a pressure transmitter management system. The system includes a communication management unit, a data storage unit, a data analysis unit, and a user interface unit;

[0013] The communication management unit adapts to multiple communication protocols, is used for processing data sending and receiving, monitoring the connection status, and ensuring stable and accurate system communication;

[0014] The data storage unit is used to construct a database to store data, create an index for convenient retrieval, and perform regular backups to prevent data loss;

[0015] The data analysis unit is used to clean and process data, perform statistical analysis, trend prediction, and fault diagnosis, and provide decision-making support;

[0016] The user interface unit provides multiple function interfaces, facilitating users to configure parameters, view device status and data, and realize device interaction.

[0017] In a possible implementation manner, through different display states of the LED indicator, users can intuitively and quickly understand the working state of the digital pressure transmitter, and promptly discover whether the device is working properly and whether configuration adjustment is required, which provides convenience for the use and maintenance of the device.

[0018] In a possible implementation manner, the display panel of the liquid crystal display screen includes:

[0019] An online flag, which is used to indicate the communication interaction status between the instrument and the on-site remote terminal unit;

[0020] Battery power, which reflects the remaining power of the battery used by the pressure transmitter and intuitively shows the energy reserve of the battery;

[0021] A percentage progress bar, which is used to represent the data acquisition and transmission progress, or the completion degree of device calibration and parameter setting;

[0022] The main variable flag is used to clarify the main physical quantity being measured currently;

[0023] The secondary variable flag represents other relevant measurement variables except the main variable;

[0024] The group number - serial number is used to identify the identity of the pressure transmitter in the system;

[0025] The lock - on flag indicates the operation permission status of the device;

[0026] The measured value display directly shows the numerical value of the actual physical quantity measured by the pressure transmitter;

[0027] The unit and menu display area shows the physical unit of the measured value, facilitating users to accurately understand the magnitude and meaning of the measured value; meanwhile, when performing parameter - setting operations, this area will display relevant menu options to guide users to perform various function settings and operations;

[0028] The signal channel is used to identify the channel used by the pressure transmitter during wireless communication.

[0029] In a possible implementation, the instrument keys include K1, K2, and the ZERO key, which are mainly used for parameter setting, information viewing, and cooperating with other operations to achieve specific functions.

[0030] In a possible implementation, the parameter setting includes two types of instrument parameter settings: instrument parameter setting A and instrument parameter setting B;

[0031] Instrument parameter setting A is used to modify the network number, channel number, instrument group number, and instrument serial number corresponding to the well name; the network number and channel number determine the position and communication frequency of the instrument in the wireless communication network, ensuring that the instrument can stably connect to a specific network and achieve accurate data transmission; the instrument group number and instrument serial number are used to distinguish different instrument devices, facilitating management and identification in the system. For large - scale industrial monitoring scenarios, each instrument can be quickly located and managed through the group number and serial number;

[0032] Instrument parameter setting B is used for the user parameter adjustment functions of reading the RTU reporting period, instrument device type, pressure decimal places, temperature decimal places, physical quantity unit switching, manufacturer code, and calibration enable switch; it can read and set the RTU reporting period, which determines the time interval for the instrument to send data to the remote terminal unit. Users can adjust it according to actual needs to balance data real-time performance and device power consumption; it can set the instrument device type to enable the instrument to perform corresponding data processing and display according to different measurement types; it can also set the pressure decimal places and temperature decimal places to control the accuracy of the liquid crystal display; perform physical quantity unit switching to facilitate users to view data in different units; view the manufacturer code; set the calibration function switch to control the calibration operation of the instrument to meet specific debugging and calibration requirements.

[0033] In a possible implementation, the process connection interface is a component that connects the pressure transmitter to the pipeline or device where the measured medium is located, and multiple specifications such as M20×1.5, NPT1 / 2, G1 / 2, and R1 / 2 can be selected.

[0034] In a possible implementation, the data analysis unit includes data cleaning and preprocessing, statistical analysis, trend prediction, and fault diagnosis;

[0035] Data cleaning and preprocessing: Clean the stored pressure data to remove outliers and noise data; use a filtering algorithm to remove the mutant data caused by interference, remove outliers and noise data, and ensure the accuracy of subsequent analysis;

[0036] Statistical analysis: Calculate the statistical characteristics of the pressure data. By analyzing these statistics, understand the change trend and fluctuation of the pressure, and provide a basis for evaluating the operating state of the device;

[0037] Trend prediction: Use time series analysis and machine learning algorithms to model and predict the pressure data; by analyzing historical data, predict the pressure change trend in the future period of time, discover potential pressure anomalies in advance, and provide decision support for equipment maintenance and production scheduling;

[0038] Fault diagnosis: Judge whether the device has a fault according to the change pattern and threshold of the pressure data; if the pressure continuously exceeds the normal range, combine other parameters to judge whether it is a device fault, and give suggestions on the cause of the fault and the solution.

[0039] In a possible implementation, the host computer user interface unit includes 12 interfaces: communication settings, general parameter settings, SMTX-X module settings, device online list, wireless signal detection, common parameter settings, factory parameter settings, version viewing, sensor channel settings, manufacturer / protocol settings, sample point parameter settings, and A11 protocol test software.

[0040] Advantages compared with the prior art:

[0041] 1. In this solution, through the rich functional design and flexible selection of the pressure transmitter, wide applicability and convenient operation are achieved. The pressure transmitter has various model classifications and can select the appropriate wireless form, range, process interface, power supply method, and explosion-proof type according to different industrial scenarios. The operation of components such as its reset magnet and instrument keys is convenient, and it can quickly enter the configuration mode, set parameters, and view information. For example, in a complex industrial environment, a pressure transmitter with an appropriate range and explosion-proof type can be selected, the signal transmission can be optimized using a right-angle antenna elbow joint, and the parameters can be adjusted through the keys to meet the pressure monitoring requirements of different working conditions;

[0042] 2. In this solution, through the powerful data processing ability and high-precision conversion of the lower computer, accurate pressure measurement is achieved. The 32-bit microprocessor of the lower computer has a powerful computing ability and can perform complex operations such as calibration and compensation on the high-precision pressure data after 24-bit ADC conversion. The 24-bit ADC can accurately convert the analog pressure signal into a digital signal, subdivide it into 224 quantization levels, and accurately capture the minute changes in pressure. This enables the pressure transmitter to accurately measure even when the pressure fluctuates slightly during industrial pipeline pressure monitoring, providing reliable pressure data for industrial production and ensuring production safety and stability;

[0043] 3. In this solution, through the perfect functional modules of the upper computer, efficient device management and data utilization are achieved. The communication management unit of the upper computer supports multiple protocols to ensure accurate data transmission; the data storage unit constructs a reasonable database to efficiently store and back up data; the data analysis unit cleans and analyzes data, predicts trends, and diagnoses faults; the user interface unit contains multiple functional interfaces to facilitate parameter configuration, device status viewing, and data viewing. For example, the operation status of the device can be grasped in real time through the device online list, and the data analysis unit can predict potential pressure abnormalities, providing a decision-making basis for device maintenance and production scheduling and improving the intelligent management level of industrial production; Brief Description of the Drawings

[0044] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0045] Figure 1 It is a functional component indication diagram of a wireless transmission digital pressure transmitter;

[0046] Figure 2 It is a selection table of a wireless transmission digital pressure transmitter;

[0047] Figure 3Schematic diagram of the panel description of a wireless digital pressure transmitter;

[0048] Figure 4 Operation function table for instrument parameter setting A of a wireless digital pressure transmitter;

[0049] Figure 5 Operation function table for instrument parameter setting B of a wireless digital pressure transmitter;

[0050] Figure 6 Schematic diagram of the upper computer communication setting and general parameter setting interface of a wireless digital pressure transmitter;

[0051] Figure 7 Schematic diagram of the upper computer SMTX-X module setting and device online list interface of a wireless digital pressure transmitter;

[0052] Figure 8 Schematic diagram of the upper computer wireless signal detection and common parameter setting interface of a wireless digital pressure transmitter;

[0053] Figure 9 Schematic diagram of the upper computer factory parameter setting and version viewing interface of a wireless digital pressure transmitter;

[0054] Figure 10 Schematic diagram of the upper computer sensor channel setting and manufacturer / protocol setting interface of a wireless digital pressure transmitter;

[0055] Figure 11 Schematic diagram of the upper computer sample point parameter setting and A11 protocol test software interface of a wireless digital pressure transmitter.

[0056] Legend: 1. Reset magnet; 2. LED indicator; 3. Tempered glass window; 4. Nameplate screw; 5. M6 bracket fixing hole; 6. Antenna; 7. Right-angle antenna elbow joint; 8. Liquid crystal display screen; 9. Instrument button; 10. Process connection interface; 11. Pressure transmitter. Detailed implementation manner

[0057] The preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms, so the present invention is not limited to the embodiments described below;

[0058] The technical solutions in the embodiments of the present application are to solve the problems in the above background technology, and the general idea is as follows:

[0059] Embodiment:

[0060] Please refer to Figures 1-11As shown in the figure, this embodiment introduces a digital pressure transmitter for wireless transmission, which includes a pressure transmitter 11, a lower computer, and an upper computer;

[0061] I. Pressure transmitter 11, as Figure 1 shown, it includes a reset magnet 1, an antenna 6, an LED indicator light 2, a right-angle antenna 6 elbow, a liquid crystal display screen 8, a tempered glass window 3, a nameplate screw 4, an M6 bracket fixing hole 5, an instrument button 9, a process connection interface 10, etc. There are multiple structures and multiple models, such as Figure 2 shown;

[0062] Its model classification includes wireless forms (divided into: ZigBee, LoRa, 4G, NB-IoT, StarFlash), measuring ranges (divided into: 2MPa, 3.5MPa, 7MPa, 10MPa, 20MPa, 35MPa, 70MPa, 100MPa, 7kPa, 20kPa, 35kPa, 70kPa, 100kPa, 200kPa, 350kPa, 1000kPa), process interfaces (divided into: M20×1.5, NPT1 / 2, G1 / 2, R1 / 2), power supply methods (divided into: 3.6V / 38Ah disposable lithium battery, 3.6V / 6.6Ah solar charging battery), explosion-proof types (divided into: intrinsically safe type, standard type; among them, the intrinsically safe type is further divided into: Ex (meeting the explosion-proof standard requirements, belonging to explosion-proof products), ia (using ia-class explosion-proof, can operate stably in a hazardous gas environment), ⅡC (indicating the category of the equipment applicable to the explosive gas environment), T4 (belonging to the temperature group, used to specify the maximum surface temperature of the equipment), Ga (with high safety in various operating states, can operate stably in dangerous environments such as Zone 0));

[0063] (1) Reset magnet 1, the reset magnet 1 has two major functions: entering the configuration mode and triggering the fast pressure refresh mode;

[0064] 1. Entering the configuration mode: When the battery is powered on for the first time or the reset magnet 1 is used, the red light of the LED indicator light 2 will flash three times. At this time, the instrument enters the configuration mode where the network number and channel number can be modified, and the red light of the LED indicator light 2 remains on constantly in the configuration mode; in addition, when the magnet is reset to make the blue light of the LED indicator light 2 stay on constantly, quickly remove the magnet, and the instrument can also enter the configuration mode by flashing three times; this design facilitates users to adjust the network parameters of the instrument according to actual needs, ensuring that the instrument can work normally in different network environments;

[0065] 2. Trigger the fast pressure refresh mode: Place a strong magnet near the instrument's Hall element and hold it for 3 - 5 seconds until the blue LED indicator 2 stays on constantly, then quickly move away. The instrument will flash three times and enter the fast pressure refresh mode, which lasts for 300 seconds, facilitating on-site users to observe the real-time pressure changes. If the magnet is held for more than 6 seconds, the blue LED indicator 2 will automatically turn off after staying on constantly. This function enables users to quickly obtain real-time pressure data when needed and promptly grasp the pressure changes.

[0066] (2) Antenna 6 is responsible for the wireless signal transmission between the pressure transmitter 11 and external devices. Applicable to the Zigbee wireless protocol, Antenna 6 can convert the digital signal generated by the pressure transmitter 11 into electromagnetic waves and transmit them. At the same time, it can also receive electromagnetic wave signals from other devices (such as RTUs) and convert them into digital signals for the pressure transmitter 11 to process, realizing wireless data transmission and ensuring stable communication between the pressure transmitter 11 and the upper computer or other devices.

[0067] (3) Through the different display states of the LED indicator 2, users can intuitively and quickly understand the working state of the pressure transmitter 11, promptly discover whether the device is operating normally and whether configuration adjustments are needed, etc., providing convenience for the use and maintenance of the device.

[0068] 1. Red light indication

[0069] Prompt for entering the configuration mode: When the battery is powered on for the first time, or when the reset magnet 1 is used for the reset operation, the red LED indicator 2 of the instrument will flash three times. These three flashes are a prompt signal to inform users that the instrument can enter the configuration mode at this time, and users can modify important parameters such as the network number and channel number in this mode. When the instrument successfully enters the configuration mode, the red LED indicator 2 of the instrument will stay on constantly, indicating that the current instrument is in a configurable working state.

[0070] 2. Blue light indication

[0071] Prompt for data acquisition and communication link establishment: The instrument defaults to collecting pressure data every 10 seconds. During this collection process, or when the instrument is establishing a communication link with the RTU (Remote Terminal Unit), the blue LED indicator 2 will flash once. This flash prompts users that the instrument is normally performing data collection work or is attempting to establish a communication connection with other devices.

[0072] Prompt for entering the configuration mode: When using the reset magnet 1 to make the blue LED indicator 2 stay on constantly, quickly move the magnet away. If the instrument flashes three times at this time, then the instrument will enter the configuration mode. This operation method provides users with another way to enter the configuration mode, increasing the flexibility of device operation.

[0073] (4) Right-angle antenna turning joint 7, which is used to change the direction of antenna 6, enabling antenna 6 to flexibly adjust the angle according to the on-site installation environment and signal transmission requirements; in some complex industrial sites where the equipment installation space is limited, the right-angle antenna turning joint 7 can allow antenna 6 to avoid obstacles, optimize the signal transmission direction, reduce signal occlusion and interference, enhance the transmission effect of wireless signals, and ensure the stability and reliability of data transmission;

[0074] (5) Liquid crystal display screen 8, as Figure 3 shown, the display panel of liquid crystal display screen 8 includes:

[0075] Online indicator, which is used to indicate the status of communication interaction between the instrument and the on-site RTU (Remote Terminal Unit);

[0076] Battery level, which reflects the remaining power of the battery used by pressure transmitter 11 and intuitively shows the energy reserve of the battery;

[0077] Percentage progress bar, which is used to represent the data acquisition and transmission progress, or the completion degree of certain operations of the device (such as calibration, parameter setting, etc.);

[0078] Main variable indicator, which is used to clarify the main physical quantity being measured currently;

[0079] Sub-variable indicator, which represents other relevant measured variables except the main variable, and may be auxiliary variables related to pressure measurement such as temperature;

[0080] Group number - serial number, which is used to identify the identity of pressure transmitter 11 in the system;

[0081] Locking indicator, which indicates the operation permission status of the device;

[0082] Measured value display, which directly shows the actual physical quantity value measured by pressure transmitter 11, such as the pressure value;

[0083] Unit and menu display area, which shows the physical unit of the measured value (such as MPa, kPa, etc.), facilitating users to accurately understand the magnitude and meaning of the measured value; at the same time, when performing operations such as parameter setting, this area will display relevant menu options to guide users to perform various function settings and operations;

[0084] Signal channel, which is used to identify the channel used by pressure transmitter 11 during wireless communication;

[0085] (6) Tempered glass window 3, on the one hand, protects the internal liquid crystal display screen 8 from external collisions, scratches, dust and moisture erosion, and extends the service life of the display screen; on the other hand, it has good light transmittance, enabling users to clearly see various information such as pressure values, battery voltages, channel numbers, signal strengths, etc. displayed on the liquid crystal display screen 8, facilitating users to quickly obtain the operating status and measurement data of the device on-site;

[0086] (7) Hanging screw 4, used for hanging identification plates; in industrial sites, in order to facilitate equipment management and maintenance, it is necessary to hang identification plates containing information such as equipment name, number, usage precautions, etc. on the equipment. The hanging screw 4 provides a fixing point for hanging the identification plate, facilitating operators to quickly identify and understand the relevant information of the equipment;

[0087] (8) M6 bracket fixing hole 5, used to fix the pressure transmitter 11 in a specific position; by passing a matching bolt through the M6 bracket fixing hole 5, the pressure transmitter 11 can be firmly installed on industrial equipment, pipelines or other support structures, ensuring that the pressure transmitter 11 will not be affected by factors such as vibration and displacement during operation, affecting measurement accuracy and data transmission stability, and ensuring the firmness and stability of equipment installation;

[0088] (9) Instrument keys 9, including keys K1, K2, and ZERO key, which are mainly used for parameter setting, information viewing, and cooperating with other operations to achieve specific functions;

[0089] 1. Parameter setting for two types of instruments A and B:

[0090] In the normal measurement mode, long press either K1 or K2 key, enter the password input state, and the screen shows: blank indicates flashing, that is, the cursor position; press the K1 key to move the cursor to the left, press the K2 key to change the value at the cursor position, input the password 00066 or 00088, and press the ZERO key to confirm, then enter the instrument parameter setting state; each menu item can be divided into a viewing state and a setting state. In the viewing state, the value of this menu item can be viewed. Press the K1 key or K2 key to switch between menu items, and press the ZERO key to enter the setting state of the current menu item. In the setting state, the value of this menu item can be changed. After the change is completed, press the ZERO key to return to the viewing state of this menu item; touch the K1 key once, the liquid crystal displays the network number, touch the K2 key once, the liquid crystal displays the error code, and if no key is pressed for 60 seconds, the instrument automatically exits the instrument parameter setting mode;

[0091] Instrument parameter setting A:

[0092] Button operation, enter the password 00066 to enter the instrument parameter setting A, where you can modify the network number, channel number, instrument group number, and instrument serial number corresponding to the well name; the network number and channel number determine the position and communication frequency of the instrument in the wireless communication network, ensuring stable connection of the instrument with a specific network and accurate data transmission; the instrument group number and instrument serial number are used to distinguish different instrument devices, facilitating management and identification in the system. For large-scale industrial monitoring scenarios, each instrument can be quickly located and managed through the group number and serial number;

[0093] After entering, the program code in the lower right corner of the first instrument is SET-P. Press the ZERO key to enter the setting state of the current menu item, press the K1 key to move the cursor, press the K2 key to change the value at the cursor position, and press the ZERO key to confirm after changing to the correct value. Press the YES key in the last menu to save. The specific operation functions are as Figure 4 shown;

[0094] Instrument parameter setting B:

[0095] Button operation, enter the password 00088 to enter the instrument parameter setting B; read user-adjustable parameters such as the RTU reporting period, instrument device type, pressure decimal places, temperature decimal places, physical quantity unit conversion, manufacturer code, calibration enable switch, etc.; can read and set the RTU reporting period, which determines the time interval for the instrument to send data to the RTU (Remote Terminal Unit), and users can adjust it according to actual needs to balance data real-time performance and device power consumption; can set the instrument device type, for example, 2 represents pressure, 3 represents temperature, and 11 represents pressure and temperature integrated, enabling the instrument to perform corresponding data processing and display according to different measurement types; can also set the pressure decimal places and temperature decimal places to control the display accuracy of the liquid crystal; perform physical quantity unit conversion to facilitate users to view data in different units; view the manufacturer code; set the calibration function switch to control the calibration operation of the instrument to meet specific debugging and calibration requirements.

[0096] The functions here are mainly for a small number of user debugging and integrator debuggers. Enter and modify with the password 00088. The specific operation functions are as Figure 5 shown;

[0097] 2. Information viewing function: In the normal measurement mode, gently touch the K1 button, and the network number will be displayed on the liquid crystal; gently touch the K2 button, and the error code will be displayed on the liquid crystal; it is convenient for users to understand the network connection status and device status of the instrument at any time, promptly discover and handle possible problems, and ensure the normal operation of the device;

[0098] 3. Implement specific functions in combination with other operations: During the instrument parameter setting process, press the K1 key to move the cursor, and press the K2 key to change the value at the cursor position. The two work together to complete parameter modification. For example, when setting parameters such as network number and channel number, the user precisely adjusts the value through the K1 and K2 keys. After completion, press the ZERO key to confirm and make the parameter modification effective.

[0099] (X) Process connection interface 10 is a component that connects the pressure transmitter 11 to the pipeline or equipment where the measured medium is located. Multiple specifications such as M20×1.5, NPT1 / 2, G1 / 2, and R1 / 2 can be selected. Its function is to connect the pressure transmitter 11 to the measured medium, enabling the pressure to accurately act on the detection element, thereby achieving precise measurement of the industrial pipeline pressure and ensuring the accuracy and reliability of pressure measurement.

[0100] In summary, the specific process of the preliminary installation and commissioning of the pressure transmitter 11 is as follows:

[0101] 1. Equipment selection:

[0102] According to the actual application scenario and requirements, select a suitable pressure transmitter 11 from various model classifications; determine the wireless form (such as ZigBee, LoRa, etc.) to ensure its compatibility with the on-site wireless communication environment; based on the measured pressure range, select a range that meets the requirements from the range options (2MPa, 3.5MPa, etc.); according to the connection method with the pipeline or equipment of the measured medium, select the corresponding process interface specification (M20×1.5, NPT1 / 2, etc.); considering the on-site power supply conditions, select a suitable power supply method (3.6V / 38Ah disposable lithium battery, 3.6V / 6.6Ah solar charging battery); if there is a risk of explosion and fire in the installation environment, determine the required explosion protection type (intrinsic safety type or standard type, and further subdivide specific grades such as Ex, ia under the intrinsic safety type).

[0103] 2. Installation process

[0104] 2.1. Fix the pressure transmitter 11. At the selected installation position, use the supporting bolts to pass through the M6 bracket fixing holes 5 to firmly install the pressure transmitter 11 on the industrial equipment, pipeline, or other support structures; ensure firm installation to avoid affecting the measurement accuracy and data transmission stability due to vibration, displacement, etc. during operation.

[0105] 2.2. Connect the process interface. According to the selected process connection interface 10 specification, connect the process connection interface 10 of the pressure transmitter 11 to the pipeline or equipment where the measured medium is located; ensure a tight connection without leakage, enabling the pressure to accurately act on the detection element and achieving precise measurement of the industrial pipeline pressure.

[0106] 2.3. Install the antenna 6 and adjust its direction. Install the antenna 6 on the pressure transmitter 11 to ensure a firm connection. If the on-site installation environment is complex and the space is limited, the right-angle antenna elbow joint 7 can be used to change the direction of the antenna 6 to avoid obstacles, optimize the signal transmission direction, reduce signal occlusion and interference, enhance the transmission effect of the wireless signal, and ensure the stability and reliability of data transmission.

[0107] 3. Commissioning process

[0108] 3.1. Initial power-on and entry into the configuration mode

[0109] After the installation is completed, power on the pressure transmitter 11. If battery power is used, when the battery is powered on for the first time, the red light of the LED indicator 2 will flash three times, and at this time, the instrument enters the configuration mode where the network number and channel number can be modified, and the red light of the LED indicator 2 remains on in the configuration mode.

[0110] The reset magnet 1 can also be used to enter the configuration mode. The operation method is as follows: Use the reset magnet 2 to make the red light of the LED indicator 2 flash three times to enter the configuration mode (the red light of the LED indicator 2 remains on); or when the magnet reset makes the blue light of the LED indicator 2 stay on constantly, quickly remove the magnet, and the instrument can also enter the configuration mode after flashing three times.

[0111] 3.2. Instrument parameter settings

[0112] 3.2.1. Instrument parameter settings A

[0113] In the normal measurement mode, long press either the K1 or K2 key to enter the password input state, and the cursor position will be displayed on the screen (blank indicates flashing); press the K1 key to move the cursor to the left, press the K2 key to change the value at the cursor position, input the password 00066, and press the ZERO key to confirm to enter the instrument parameter settings A.

[0114] After entering, the program code number at the lower right corner of the first instrument is SET-P. Press the ZERO key to enter the setting state of the current menu item, press the K1 key to move the cursor, press the K2 key to change the value at the cursor position, and sequentially set the network number, channel number, instrument group number, and instrument serial number corresponding to the well name; these parameters determine the position of the instrument in the wireless communication network, the communication frequency, and the identity identifier in the system, ensuring that the instrument can be stably connected to a specific network and facilitating system management. After the settings are completed, save until the last menu YES.

[0115] 3.2.2. Instrument parameter settings B

[0116] Similarly, in the normal measurement mode, long press K1 or K2 to enter the password input state, input the password 00088, and press the ZERO key to confirm to enter the instrument parameter settings B.

[0117] In this mode, user parameter adjustment functions such as reading and setting the RTU reporting period, instrument device type (e.g., 2 represents pressure, 3 represents temperature, etc.), pressure decimal places, temperature decimal places, physical quantity unit switching, manufacturer code, calibration enable switch, etc. can be performed; corresponding settings can be made according to actual needs, such as adjusting the RTU reporting period to balance data real-time performance and device power consumption, etc.

[0118] 4. Information viewing and function testing:

[0119] Information viewing: In the normal measurement mode, gently touch the K1 button, and the network number will be displayed on the liquid crystal display to check whether the network connection is correct; gently touch the K2 button, and the error code will be displayed on the liquid crystal display to check whether there are any abnormalities in the device.

[0120] Fast pressure refresh mode test: Place a strong magnet near the instrument's Hall element, keep it for 3 - 5 seconds until the blue LED indicator 2 stays on constantly, and then quickly leave. The instrument will flash three times and enter the fast pressure refresh mode, which can last for 300 seconds. Observe the real-time change of pressure to test whether this function is normal.

[0121] Data acquisition and communication link establishment prompt test: The instrument defaults to collecting pressure data every 10 seconds. During the data collection process or when the instrument is establishing a communication link with the RTU, observe whether the blue LED indicator 2 will flash once to determine whether the data acquisition and communication link establishment prompt function is normal.

[0122] II. Lower computer, which includes a 32-bit microprocessor and a 24-bit ADC;

[0123] The 32-bit microprocessor refers to a microprocessor with a 32-bit data bus width, which has powerful data processing capabilities and can quickly process a large amount of data collected by the pressure transmitter 11; it can perform complex operations on the high-precision pressure data converted by the 24-bit ADC, such as calibrating and compensating the pressure data according to the measurement principle and compensation algorithm to improve the measurement accuracy and ensure the accuracy and reliability of the output pressure measurement value.

[0124] The 24-bit ADC is a 24-bit analog-to-digital converter used to convert analog signals into digital signals; it converts the analog pressure signal collected by the pressure sensor into a digital signal. The high resolution of 24 bits means that it can divide the analog signal into 2 24A number of different quantization levels can precisely capture the minute changes in the pressure signal, accurately convert extremely weak or subtle pressure changes into digital quantities, providing a basis for subsequent precise measurement and analysis. At the same time, it enables the pressure transmitter 11 to have higher measurement accuracy and resolution. In industrial pipeline pressure monitoring, it can detect minute pressure fluctuations. Even when the pressure change is very small, it can accurately convert it into a digital signal through a 24-bit ADC, enabling the pressure transmitter 11 to measure pressure more precisely and meet the requirements for high-precision pressure measurement in the industrial field.

[0125] III. Host computer. The host computer is the management system of the pressure transmitter 11. The system includes a communication management unit, a data storage unit, a data analysis unit, and a user interface unit.

[0126] (1) Communication management unit. It adapts to multiple communication protocols, processes data transmission and reception, monitors the connection status, and ensures stable and accurate system communication.

[0127] 1. Communication protocol adaptation: It supports multiple communication protocols such as ZigBee, LoRa, 4G, NB-IoT, etc., and can be adapted according to the wireless communication system of the pressure transmitter 11. When there are multiple communication requirements in the system, it can flexibly switch protocols to ensure accurate data transmission.

[0128] 2. Data transmission and reception processing: It is responsible for data interaction with the lower computer, receiving information such as pressure data and device status uploaded by the lower computer, and at the same time sending control instructions and configuration parameters of the host computer to the lower computer. When receiving data, it will verify the data and request retransmission if the data is incorrect to ensure data accuracy.

[0129] 3. Connection management: It monitors the connection status with the lower computer. When the connection is abnormal, it will automatically attempt to reconnect. If the communication is interrupted due to signal interference, it will resume the connection in a timely manner after the interference is eliminated to ensure the stability of system communication.

[0130] (2) Data storage unit. It constructs a database to store data, creates an index for convenient retrieval, and performs regular backups to prevent data loss.

[0131] 1. Database construction: It constructs a data storage architecture using a relational database (such as MySQL) or a time series database (such as InfluxDB). According to the characteristics of the pressure data, it designs a reasonable data table structure, including fields such as pressure value, acquisition time, device ID, temperature (if it is temperature and pressure integrated), etc., to facilitate data storage and query.

[0132] 2. Data storage: It stores information such as pressure data, device parameters, and alarm records uploaded by the lower computer in the database in chronological order. To improve storage efficiency and data security, it will perform regular backups to prevent data loss.

[0133] 3. Data Indexing and Retrieval: Create indexes for key data fields (such as collection time, device ID) to improve data retrieval speed. When a user queries pressure data for a specific time period or a specific device, the system can quickly locate and return the results.

[0134] (III) Data Analysis Unit, which is used to clean and process data, perform statistical analysis, trend prediction, and fault diagnosis, and provide decision support.

[0135] 1. Data Cleaning and Preprocessing: Clean the stored pressure data to remove outliers and noise data. Use a filtering algorithm to remove mutant data caused by interference, outliers, and noise data to ensure the accuracy of subsequent analysis. For example, during the pressure data collection process, if there is a significant deviation from the normal range in the pressure value at a certain moment, the filtering algorithm can identify and remove this outlier.

[0136] 2. Statistical Analysis: Calculate the statistical characteristics of pressure data, such as mean, maximum value, minimum value, standard deviation, etc. By analyzing these statistics, understand the change trend and fluctuation of pressure, and provide a basis for evaluating the operating state of the device.

[0137] Mean formula: where n is the number of data, and x i is the i-th data. For example, if 5 pressure data are collected over a period of time: 2 MPa, 2.2 MPa, 1.8 MPa, 2.1 MPa, 1.9 MPa, the mean is (2 + 2.2 + 1.8 + 2.1 + 1.9) ÷ 5 = 2 MPa.

[0138] Standard deviation formula: Taking the above data as an example, first calculate the square of the difference between each data and the mean, then find the average of these squared values, and finally take the square root to get the standard deviation, which can measure the degree of data dispersion and understand the pressure fluctuation.

[0139] Maximum value: Compare the data in the sequence one by one. Each data is compared with the currently recognized maximum value. If this data is greater than the current maximum value, update this data as the maximum value. Keep repeating this process until all data is traversed. The final result is the maximum value in this set of data, denoted by max(x1, x2,..., x n ).

[0140] Minimum value: Similarly, compare the data in the sequence one by one. Each data is compared with the currently recognized minimum value. If this data is less than the current minimum value, update this data as the minimum value. Keep repeating this process until all data is traversed. The final result is the minimum value in this set of data, denoted by min(x1, x2,..., x n) Representation;

[0141] 3. Trend Prediction: Use algorithms such as time series analysis and machine learning to model and predict pressure data; by analyzing historical data, predict the pressure change trend in the future period, discover potential pressure anomalies in advance, and provide decision-making support for equipment maintenance and production scheduling;

[0142] Use algorithms such as time series analysis and machine learning to model and predict pressure data. However, specific algorithm formulas are not clearly given in the text; taking the simple moving average method in time series analysis as an example, assuming that the pressure value in the n+1th period is to be predicted, select the data of the nearest k periods, and the predicted value For example, if the pressure values of the nearest 3 periods (2MPa, 2.2MPa, 2.1MPa) are selected to predict the next period's pressure, the predicted value is (2 + 2.2 + 2.1) ÷ 3 = 2.1MPa; machine learning algorithms establish a relationship model between data features and pressure changes through learning a large amount of historical pressure data, and then predict the future pressure trend;

[0143] 4. Fault Diagnosis: Judge whether the equipment has a fault according to the change pattern and threshold of pressure data; if the pressure continuously exceeds the normal range, combine other parameters to judge whether it is an equipment fault, and give suggestions on the cause of the fault and solutions; for example, set the normal pressure range to 1.5 - 2.5MPa, when the pressure measurement value is greater than 2.5MPa for many consecutive times, the system judges that there may be a fault, and then further analyzes the cause of the fault in combination with parameters such as equipment temperature and running time, such as whether the pressure increase is caused by pipeline blockage, and give corresponding solutions;

[0144] (IV) User Interface Unit

[0145] It includes communication settings, general parameter settings, SMTX-X module settings, device online list, wireless signal detection, common parameter settings, factory parameter settings, version view, sensor channel settings, manufacturer / protocol settings, sample point parameter settings, A11 protocol test software, a total of 12 interfaces;

[0146] 1. Communication Settings Interface ( Figure 6 / A), usually includes options such as serial port selection (such as U to serial port), baud rate setting (such as 19200), parity check method selection (such as no parity check), etc.;

[0147] This interface is used to configure the data transmission parameters between the upper computer and the lower computer; correctly setting the serial port parameters can ensure stable and accurate data transmission between the upper computer and the pressure transmitter 11 through the serial port; if the baud rate is set improperly, it may cause data transmission errors or slow transmission speed; the selection of the parity check method helps to detect whether data errors occur during the transmission process, ensuring the integrity and accuracy of the data, which is the basic guarantee for the stable communication of the system;

[0148] 2. Conventional Parameter Setting Interface ( Figure 6 / B), covering parameters such as RTU reporting period setting (e.g., 60 seconds can be set), pressure decimal digit setting (0 - 3 optional), temperature decimal digit setting (0 - 3 optional), etc.;

[0149] Setting the reporting period can balance data real - time performance and device power consumption, meeting the requirements of different application scenarios; setting the decimal digits of pressure and temperature can adjust the display accuracy, meeting different users' requirements for data fineness; in scenarios with low precision requirements, the decimal digit display can be reduced to make data viewing more concise; while in experimental or industrial production links with high precision requirements, the decimal digit display can be increased to ensure data accuracy;

[0150] 3. SMTX - X Module Setting Interface ( Figure 7 / C), including well name setting, router / coordinator selection (0 for router, 1 for coordinator), S2C module type setting, network ID setting (e.g., 48765 in HEX format), communication channel setting, encryption enable setting (e.g., 1 means enabled), network key setting (e.g., 11), AO command type setting, ZS protocol type setting, etc.;

[0151] This interface names and calculates the network number and channel number to accurately locate and communicate the device in the network. Setting the router / coordinator, module type, network ID, etc. can configure the network attributes of the device to ensure its access to the correct network; encryption enable and network key settings encrypt data transmission to prevent data from being stolen or tampered with, ensuring system security; AO command type and ZS protocol type settings determine the communication rules between the device and other devices in the network to ensure normal data interaction;

[0152] 4. Device Online List Interface ( Figure 7 / D), showing information such as device address, communication online time, device type, device group number, device serial number, communication efficiency (e.g., 100%), etc.;

[0153] This interface facilitates users to quickly understand the basic information of all online devices in the current system; the device can be uniquely identified by the device address; the communication online time is used to record the moment when the device accesses the network, facilitating fault troubleshooting; device type, group number, and serial number help in classifying and managing devices; communication efficiency can intuitively reflect the communication status of the device. If the communication efficiency is low, the network or device problems can be checked in time to ensure system device management and communication status monitoring;

[0154] 5. Wireless Signal Detection Interface ( Figure 8 / E), showing information such as the number of online devices, device address, communication online time, signal strength (e.g., - 53dBm), etc., and may also have operation buttons for clearing the list and detecting wireless signals;

[0155] By monitoring the number of online devices, this interface can understand the device access situation within the current network coverage; the device address, online time, and signal strength can help users judge the signal quality and connection stability of the device; if the signal strength is weak, the device position or the direction of the antenna (6) can be adjusted to ensure normal wireless communication between devices and optimize the wireless communication environment;

[0156] 6. Common parameter setting interface ( Figure 8 / F), which includes setting options such as well name, network number, physical channel, instrument type (e.g., 11 represents pressure and temperature integrated), instrument group number, instrument number, maximum sleep time (e.g., 3600 seconds), load judgment step, hourly average power consumption, running time, encryption enable, network key (hexadecimal), etc.;

[0157] By setting the well name, network number, and channel on this interface, it ensures accurate device network connection; selecting the instrument type enables the system to process data in the corresponding mode; setting the group number and number facilitates device management; the maximum sleep time determines the energy-saving strategy of the device in case of communication anomalies; the load judgment step is used for specific data processing; encryption enable and network key ensure data security; hourly average power consumption and running time can help users understand the energy consumption and operation status of the device, and reasonably arrange device maintenance and management;

[0158] 7. Factory parameter setting interface ( Figure 9 / G), which displays information such as the model code of the instrument (e.g., 20220609001), serial number, lower range limit, upper range limit, measurement accuracy (e.g., 0.5%), protection level (e.g., IP68 (1m, 1h)), explosion-proof level (e.g., ExiaⅡCT4Ga), instrument description, etc., and also operation buttons such as configuration, reading, restoring factory settings, one-key backup parameters, and one-key restoring parameters;

[0159] Through this interface, users can view the basic information of the instrument, understand the device specifications, and restoring factory settings can restore the parameters to the initial state when the device has anomalies, facilitating problem troubleshooting. The backup and restore parameter functions enable users to back up data before upgrading the system or adjusting parameters and quickly restore it when problems occur, ensuring the normal operation of the device;

[0160] 8. Version viewing interface ( Figure 9 / H), which displays the factory version and date of the instrument (e.g., date 20220609, version V1.00);

[0161] This interface helps users understand the software version of the device and judge whether software upgrade is needed; new versions usually fix the vulnerabilities of old versions and add new functions. Users can update the device software in a timely manner based on the version information to improve the performance and stability of the device;

[0162] 9. Sensor Channel Setting Interface( Figure 10 / I), set the switch states (1 for on, 0 for off) of Channel 1 (pressure channel) and Channel 2 (temperature channel). When both Channel 1 and Channel 2 are 1, it represents the temperature and pressure integrated state;

[0163] This interface flexibly configures the sensor channels according to the actual measurement requirements. When only pressure measurement is needed, the temperature channel can be closed to reduce resource occupancy. When simultaneous measurement of temperature and pressure is required, both channels are opened to achieve integrated temperature and pressure measurement, improving the flexibility and adaptability of equipment use;

[0164] 10. Manufacturer / Protocol Setting Interface( Figure 10 / J), which includes setting options for manufacturer code (e.g., 7 represents Bengbu Riyue) and protocol type (e.g., 1 represents A11);

[0165] By setting the manufacturer code through this interface, the system can identify the device manufacturer, facilitating the acquisition of relevant technical support and services. Selecting the protocol type ensures that the device communicates with the host computer according to unified rules, guaranteeing accurate data interaction and serving as an important safeguard for system communication compatibility;

[0166] 11. Sample Point Parameter Setting Interface( Figure 11 / K), with options for printing data, operational amplifier gain setting (e.g., 0.61), curve display, sample point number setting (e.g., 6), physical value upper limit, physical value lower limit, physical value tare setting, as well as sampling code and physical value setting for each sample point and channel selection (for non-integrated sensors), read, start, stop, set, and other operation buttons;

[0167] By setting parameters such as operational amplifier gain, the sensor signal processing is optimized to improve measurement accuracy. The sample point number, physical value upper and lower limits, and tare setting are used for data processing and calibration. When performing pressure calibration, the tare can be set to remove zero error. The start and stop operations can control the sample data acquisition process, facilitating users to collect and analyze data to meet different measurement requirements;

[0168] 12. A11 Protocol Test Software Interface( Figure 11 / L), in the normal communication state, displays information such as the device MAC address, instrument type, device group number, communication efficiency, remaining battery power (e.g., 3.7v), sleep time (communication cycle), current pressure value of the instrument, clear button, sampling code, ambient temperature, ambient temperature sampling code, etc. of the instrument, as well as operation options such as file, configuration mode, non-conventional configuration, close communication, exit, reset, enter configuration, exit configuration, instrument upgrade, maintain network, etc.;

[0169] The real-time display of the device operation status and measurement data facilitates users to monitor the device; the clear button is used to calibrate the pressure data; the device parameters can be adjusted through the configuration mode options; the meter upgrade option can update the device software; operations such as reset, enter configuration, and exit configuration facilitate users to maintain the device and optimize the device performance, ensuring the normal operation of the device under the A11 protocol.

[0170] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A wireless transmission digital pressure transmitter, characterized in that: include: A pressure transmitter (11), the pressure transmitter (11) comprising a reset magnet (1), an antenna (6), an LED indicator light (2), a right-angle antenna bend joint (7), a liquid crystal display (8), a tempered glass window (3), a hanging screw (4), an M6 bracket fixing hole (5), an instrument button (9), and a process connection interface (10), wherein the pressure transmitter (11) has a plurality of models and types through different wireless forms, ranges, process interfaces, power supply modes, and explosion-proof forms; The lower computer includes a 32-bit microprocessor and a 24-bit ADC; A host computer, which is a management system of the pressure transmitter (11), and the system includes a communication management unit, a data storage unit, a data analysis unit, and a user interface unit; The communication management unit is adapted to various communication protocols, used to process data transmission and reception, monitor the connection status, and ensure stable and accurate system communication; The data storage unit is used to build a database to store data, create indexes for easy retrieval, and perform regular backups to prevent data loss; The data analysis unit is used to clean and process data, conduct statistical analysis, trend prediction and fault diagnosis, and provide decision support; The user interface unit provides multiple functional interfaces to facilitate users to configure parameters, view device status and data, and realize device interaction.

2. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The LED indicator light (2) distinguishes different display states through red and blue colors and different display frequencies. The user can intuitively and quickly understand the working state of the digital pressure transmitter (11) based on the display state, and promptly find out whether the device is in normal operation and whether configuration adjustment is required, which provides convenience for the use and maintenance of the device.

3. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The display panel of the liquid crystal display (8) comprises: Online flag, used to indicate the status of communication interaction between the instrument and the on-site remote terminal unit; Battery power, reflecting the remaining power of the battery used by the pressure transmitter (11), and intuitively showing the energy reserve of the battery; The percentage progress bar is used to indicate the progress of data collection and transmission, or the degree of completion of equipment calibration and parameter setting; The main variable flag is used to identify the main physical quantity currently being measured; The secondary variable sign indicates other related measurement variables besides the main variable; A group number-serial number, used to identify the pressure transmitter (11) in the system; The lock symbol indicates the operation permission status of the device; The measured value display directly displays the actual physical quantity value measured by the pressure transmitter (11); The unit and menu display area displays the physical unit of the measured value, which helps users to accurately understand the magnitude and meaning of the measured value. At the same time, when performing parameter setting operations, this area will display relevant menu options to guide users to perform various function settings and operations. The signal channel is used to identify the channel used by the pressure transmitter (11) during the wireless communication process.

4. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The instrument buttons (9) include K1, K2, and ZERO buttons, which are mainly used for parameter setting, information viewing, and cooperating with other operations to realize specific functions.

5. A wireless transmission digital pressure transmitter as claimed in claim 4, characterized in that: The parameter settings include two types of instrument parameter settings: instrument parameter setting A and instrument parameter setting B; Instrument parameter setting A is used to change the network number, channel number, instrument group number, and instrument serial number corresponding to the well name; the network number and channel number determine the position and communication frequency of the instrument in the wireless communication network, ensuring that the instrument can be stably connected to a specific network and achieve accurate data transmission; the instrument group number and instrument serial number are used to distinguish different instrument equipment, which is convenient for management and identification in the system. For large-scale industrial monitoring scenarios, each instrument can be quickly located and managed through the group number and serial number; Instrument parameter setting B is used to read the remote terminal unit reporting cycle, instrument equipment type, pressure decimal places, temperature decimal places, physical quantity unit switching, manufacturer code, calibration enabled switch user parameter adjustment function; it can read and set the remote terminal unit reporting cycle, which determines the time interval for the instrument to send data to the remote terminal unit. Users can adjust it according to actual needs to balance data real-time performance and equipment power consumption; it can set the instrument equipment type so that the instrument can perform corresponding data processing and display according to different measurement types; it can also set the pressure decimal places and temperature decimal places to control the accuracy of the LCD display; Switch the physical quantity units to facilitate users to view data in different units; view the manufacturer code; set the calibration function switch to control the calibration operation of the instrument to meet specific debugging and calibration requirements.

6. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The process connection interface (10) is a component for connecting the pressure transmitter (11) to the pipeline or equipment where the measured medium is located, and can be selected from a variety of specifications such as M20×1.5, NPT1 / 2, G1 / 2, and R1 / 2.

7. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The data analysis unit includes data cleaning and preprocessing, statistical analysis, trend prediction, and fault diagnosis; Data cleaning and preprocessing: Clean the stored pressure data to remove outliers and noise data; Use filtering algorithms to remove mutation data caused by interference, remove outliers and noise data, and ensure the accuracy of subsequent analysis; Statistical analysis: Calculate the statistical characteristics of pressure data. By analyzing these statistics, understand the changing trend and fluctuation of pressure, and provide a basis for evaluating the operating status of equipment; trend Prediction: Use time series analysis and machine learning algorithms to model and predict pressure data; By analyzing historical data, we can predict the pressure change trend in the future, detect potential pressure anomalies in advance, and provide decision support for equipment maintenance and production scheduling; Fault diagnosis: Determine whether the equipment has a fault based on the change pattern and threshold of the pressure data; if the pressure continues to exceed the normal range, combine other parameters to determine whether it is a device failure, and give the cause of the fault and solution suggestions.

8. A wireless transmission digital pressure transmitter as claimed in claim 1, characterized in that: The host computer user interface unit includes 12 interfaces in total, including communication settings, general parameter settings, SMTX-X module settings, device online list, wireless signal detection, common parameter settings, factory parameter settings, version viewing, sensor channel settings, manufacturer / protocol settings, sample point parameter settings, and A11 protocol test software.

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