Mountain area type intelligent combined flow measuring instrument

Abstract

The invention relates to the technical field of water flow measurement, and discloses a mountainous area type intelligent combined flow measuring instrument, which is characterized in that a measuring system is used for collecting and analyzing fluid flow; an outer box structure capable of automatically leveling is arranged outside the flow measuring instrument, and a high-precision tilt angle sensor and a multi-point supporting miniature leveling mechanism are arranged in an outer box; the remote control system is used for realizing wireless transmission and remote operation of data; when the remote system detects that the external environment changes drastically or the inclination angle of the instrument exceeds an allowable value according to a sensor, the leveling mechanism of the outer box is triggered to carry out posture correction in time; and if the correction cannot be completed within the specified time or the inclination exceeds the safety range, the system gives an alarm to the cloud to remind the operation and maintenance personnel to process in time. In addition, the measurement result of the flow measuring instrument body can be corrected and judged in combination with the attitude data returned by the leveling system in real time, so that the measurement error caused by environment change or random interference in the use process is eliminated to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of water flow measurement, and particularly to a mountain-type intelligent combined flowmeter. Background Technique

[0002] In water conservancy and hydropower projects, in order to understand and master the flow rate of a water channel, a water measuring weir is usually set on the water channel. Existing water measuring weirs generally include a weir trough, in which a vertical weir plate is provided. A notch is provided on the vertical weir plate, so that when water flows through the notch, it has the property of sharp-crested weir flow. A water gauge or a weir flowmeter is set at a depth of 3 to 5 times the maximum over-weir water depth upstream of the weir plate. According to the reading of the water gauge or the instrument, the flow rate can be obtained according to relevant formulas or a pre-drawn water level-flow rate chart. Currently, the notch shape on the weir plate is mostly triangular or trapezoidal: the apex angle of the triangular notch is downward, and the apex angle is usually a right angle of 90°; the cross-section of the trapezoidal notch is generally a trapezoidal notch with a wider upper part and a narrower lower part, and the side of the trapezoidal notch is usually a hypotenuse with an inclination of 4:1. In order to improve the measurement accuracy, free overflow is preferably used.

[0003] In actual projects, due to the influence of external and internal environments on the seepage flow rate in the project area, it is a dynamically changing process, that is, the seepage flow rate is very large at a certain point in time or during a certain period, while in other periods, the seepage flow rate is very small. Therefore, it is necessary to accurately measure the seepage flow rate in each time period of the project area, so as to make timely and effective countermeasures. The notch shape on the vertical weir plate of the existing water measuring weir is fixed. When the notch shape is triangular, a higher water head can be obtained at a smaller flow rate, and the measurement accuracy is relatively high. However, when the flow rate is large, the measurement range is limited and cannot meet the measurement accuracy; if the notch shape on the vertical weir plate of the water measuring weir is trapezoidal, the over-flow capacity is improved, and the measurement accuracy for a larger flow rate can be satisfied, but the measurement accuracy is relatively low when the flow rate is small.

[0004] The measurement of various flow rates is essential measurement data in hydrogeological surveys, environmental geological surveys, hydrological monitoring, water conservancy design, and environmental monitoring. When obtaining flow rate data during field actual exploration or measurement, the commonly used tools are triangular weirs (more accurate for flow rates < 100 L / S), trapezoidal weirs (more accurate for flow rates of 100 - 1000 L / S), and rectangular weirs (with a larger measurement range), all of which are equipped with straight rulers. The operation process is controlled manually, and the measurement accuracy is affected. The measurement range of the triangular weir is the smallest, and the measurement range of the rectangular weir is the largest. The measurement ranges of the three measuring weirs are also limited by themselves.

[0005] In the prior art, firstly, there is a flowmeter that uses a float-type flow measurement and single-point leveling device. This device realizes local leveling by using the rise and fall of the float and a single inclination sensor. Secondly, there is a flowmeter that uses multi-sensor fusion to measure flow velocity and liquid level and has the function of remote data acquisition. However, in a mountainous environment with complex terrain, it often requires additional brackets or manual assistance for instrument attitude correction, and lacks a multi-point leveling structure, making it difficult to maintain measurement accuracy in an environment with a large inclination.

[0006] Both of the above two prior arts have certain limitations. The first technology can collect flow data and complete partial leveling operations. However, the leveling is limited to single-inclination detection and lacks real-time tracking of the overall attitude of the outer box, making it difficult to maintain stability during sudden terrain changes or long-term operation. The second technology has the ability of multi-sensor fusion and remote data acquisition, but does not closely combine the leveling system with multi-point support and remote monitoring. When the external environment changes violently or there is a large-angle inclination, manual intervention or re-deployment of the support structure is required, and the degree of automation of the measurement process is relatively low. Summary of the Invention

[0007] The purpose of the present invention is to provide a mountain-type intelligent combined flowmeter to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A mountain-type intelligent combined flowmeter, comprising:

[0009] A measurement system for collecting and analyzing the fluid flow rate, integrated with a flow velocity sensor, a pressure / liquid level sensor. The sensors transmit the detected flow velocity, water level or pressure difference signals to the data acquisition module, and the data acquisition module converts the original physical quantity into quantifiable flow information according to a pre-set measurement formula or calibration curve;

[0010] A leveling system, an autonomous leveling outer box structure arranged outside the flowmeter, adapted to be used in mountainous terrain; inside the outer box, there are arranged high-precision inclination sensors or gyroscopes and a multi-point supported micro-leveling mechanism; before measurement or during operation, when it is detected that there is a deviation between the outer box and the horizontal plane, the control unit fine-tunes multiple support feet or support surfaces through a servo motor or a hydraulic / pneumatic balance device to keep the outer box and the core measurement unit horizontal;

[0011] Remote control system, including a data acquisition module and a wireless communication module. The wireless communication module uses a cellular network, a wireless local area network or a long-distance communication method to upload sensor information such as flow rate, liquid level, temperature, etc. to the cloud management platform. The cloud management platform can remotely configure parameters and issue commands to the flowmeter. When it detects a drastic change in the external environment or the inclination angle of the instrument exceeds a preset value, it sends a leveling command to the flowmeter through the same communication link. If the leveling times out or the inclination exceeds the safe range, it sends an alarm message to the cloud.

[0012] The attitude correction is linked with the measurement result. In complex mountainous terrains, when the leveling system corrects the attitude, the measurement result of the flowmeter body is synchronously calibrated with the real-time attitude data to reduce the measurement deviation caused by terrain fluctuations or installation errors, and ensure the measurement accuracy and stability in mountainous environments. Further, the sensors include:

[0013] Flow velocity sensor: Obtains flow velocity information by detecting the rotation, frequency change or Doppler effect generated when water flows through the probe.

[0014] Pressure / liquid level sensor: Reflects the water level change in the form of liquid column height or pressure difference, and thus calculates the flow rate.

[0015] Auxiliary sensors such as temperature and humidity: Provide reference parameters for environmental calibration and data correction.

[0016] After the data acquisition is completed, the main control unit will perform preliminary processing on the acquired data, such as outlier rejection, average value calculation and real-time monitoring based on a set threshold. The finally obtained flow rate data can be recorded in the local memory or transmitted wirelessly to the remote monitoring platform to provide support for subsequent analysis, decision-making or scheduling.

[0017] Further, the specific working process of the outer box leveling system is as follows:

[0018] (1) Attitude detection:

[0019] The high-precision inclination sensor or gyroscope integrated inside the outer box will collect the angle information between the current outer box and the horizontal plane in real time at a certain frequency (such as multiple times per second). This information usually includes the inclination angles in the horizontal and vertical directions. If the device is in a severe vibration or impact occasion, the acceleration sensor can also be combined to monitor the attitude more comprehensively.

[0020] (2) Data analysis:

[0021] The inclination angle data detected by the sensor will be transmitted to the control unit (such as a microcontroller or an embedded system). The control unit judges whether to perform a leveling operation based on a preset leveling algorithm (including attitude feedback, error tolerance and fine-tuning strategy).

[0022] If the detected tilt angle exceeds the design threshold (e.g., ±1° or a smaller range), the control unit will immediately send an instruction to the actuator.

[0023] (3) Actuator adjustment:

[0024] The actuator can be a micro stepping motor, a servo motor with a gear mechanism, or may also use a hydraulic or pneumatic balancing device. Multiple support points are usually symmetrically distributed on the bottom of the outer box or the internal support platform, and the attitude is corrected by lifting or tilting fine-tuning.

[0025] When the control unit issues an "up" or "down" instruction, the corresponding motor or hydraulic rod will act to lift or lower a specific support point in a micro-step manner, achieving precise leveling of the outer box in the horizontal, vertical, or three-dimensional directions.

[0026] (4) Real-time correction and feedback:

[0027] During the leveling process, the tilt sensor will continuously monitor the attitude change to form a closed-loop control. As the support points move, the tilt angle data is continuously updated and fed back to the control unit until the tilt degree returns within the allowable range.

[0028] If external force disturbances persist (such as wind blowing, ground vibration, fluid impact, etc.), the system will repeatedly execute the leveling instruction according to the new tilt data to maintain the horizontal attitude of the core measurement module of the current meter.

[0029] The entire leveling process needs to ensure fast response while avoiding overshoot and vibration as much as possible, which is usually achieved by optimizing the control algorithm and setting soft start and soft stop strategies.

[0030] (5) Safety and exception handling:

[0031] If the leveling system detects that the tilt degree of the instrument exceeds the safety range (such as exceeding a certain angle or the leveling time is too long), an alarm will be generated and the exception information will be recorded; at the same time, an alarm signal can be sent to the remote monitoring platform to prompt the operator to perform manual intervention or on-site inspection.

[0032] In some extreme environments (such as strong earthquakes or flood impacts), the system may not be able to complete effective automatic leveling. At this time, the operation and maintenance personnel should, according to the actual situation, adopt a more stable installation method or evacuate the instrument from the dangerous area.

[0033] Furthermore, the specific working process of the remote control system is as follows:

[0034] (1) Data acquisition and digitization

[0035] The original sensor signals such as measured flow rate, liquid level, temperature, and pressure are first input into the data acquisition module. This module usually consists of a high-precision analog-to-digital converter (ADC) and a filtering circuit to complete the digitization, noise reduction, and preliminary calibration of analog signals.

[0036] The acquired digitized data can be subjected to necessary calculations or preprocessing locally (such as outlier rejection, statistical average, data compression) to prepare for subsequent wireless transmission.

[0037] (2) Wireless Communication and Platform Interaction

[0038] The preprocessed data is sent to the cloud management platform through a wireless communication module (such as 4G / 5G cellular network, Wi-Fi, or LoRa, etc.). The transmission protocol can adopt MQTT, HTTP, or a custom protocol to ensure stable and reliable information transmission under different bandwidth and network conditions.

[0039] The cloud management platform receives, stores, and analyzes the uplink data in real time, and presents it in various forms such as charts, curves, or geographical locations on the visualization interface to help users quickly understand the device operation status and measurement results. Users can also call historical data at any time for trend analysis or comparative research.

[0040] (3) Remote Control and Instruction Issuance

[0041] The platform side also has a remote control function, allowing users to configure the parameters of the flow meter on the web side or mobile side. For example:

[0042] Adjust the measurement frequency: Set a faster or slower sampling interval under different flow rate change rates.

[0043] Re-calibrate: When there is a large deviation, send a calibration instruction to the flow meter to make it perform a reference self-check again.

[0044] Work mode switching: Switch the flow meter to a low-power mode, continuous monitoring mode, or timed monitoring mode, etc., according to different monitoring objectives or energy consumption requirements.

[0045] After the instruction issuance is parsed by the main control unit, it will reset the internal parameters of the flow meter or execute specific device operations (such as restarting the leveling system or restarting the sensor calibration) accordingly, so as to achieve true remote management and flexible operation and maintenance.

[0046] (4) Alarm and Security Mechanism

[0047] To detect and handle device anomalies in a timely manner, the platform usually sets multiple alarm rules. When the measured value exceeds the safety threshold (such as sudden increase in flow rate, abnormal temperature), the device tilts excessively, or the communication is interrupted for more than the specified duration, the system will automatically trigger an alarm.

[0048] Alarm information will be notified to relevant operation and maintenance personnel by means of SMS, email or mobile push to take measures. At the same time, the device side can also perform emergency shutdown or restart operations according to the built-in logic to avoid hardware damage or safety accidents.

[0049] Furthermore, the mountain-type intelligent combined flowmeter includes a rectangular weir, a triangular weir, a trapezoidal weir, a millimeter scale, and a level instrument. The rectangular weir is provided with a rectangular weir plate. Two groups of rectangular weir plates are provided. Two groups of millimeter scales are provided. The millimeter scales are arranged on the rectangular weir plates. The level instrument is arranged at the upper end of the rectangular weir. The triangular weir is fixedly connected to the rectangular weir by bolts to form a combination of the rectangular weir and the triangular weir. The trapezoidal weir is fixedly connected to the rectangular weir by bolts to form a combination of the rectangular weir and the trapezoidal weir.

[0050] Preferably, a diversion channel is provided on one side of the rectangular weir; the bottom angle of the water passing section of the triangular weir is 90°; the water passing section of the trapezoidal weir is a Simpson trapezoid, and the inclination ratio of its hypotenuse in the height direction is 4:1.

[0051] Another object of the present invention is to provide a flow measurement method for a mountain-type intelligent combined flowmeter, including the following steps:

[0052] Step 1, deploy the flowmeter at the fluid site to be measured, and perform preliminary horizontal calibration through the outer box leveling system;

[0053] Step 2, start the measurement unit, collect the flow velocity, liquid level and other environmental parameters, and generate preliminary measurement data;

[0054] Step 3, transmit the preliminary measurement data to the data acquisition module for digitization and preprocessing;

[0055] Step 4, send the preprocessed data to the cloud management platform through the wireless communication module, and display or store the measurement results in real time in the cloud management platform.

[0056] Furthermore, the preliminary horizontal calibration of the outer box leveling system includes:

[0057] S11, the inclination sensor detects the deviation between the flowmeter and the horizontal plane;

[0058] S12, the control unit sends an adjustment instruction to the leveling actuator in the outer box according to the deviation;

[0059] S13, the leveling actuator raises or lowers through the support feet or the support surface until the inclination returns to the preset range.

[0060] Furthermore, the method also includes an automatic leveling step when detecting changes in the external environment, specifically:

[0061] S21. When the internal sensors of the remote monitoring system or the current meter detect that the ground vibration, external impact, or the inclination angle of the outer box exceeds the limit, an automatic leveling trigger signal is generated;

[0062] S22. Upload the automatic leveling trigger signal to the control unit, and the control unit re-executes the inclination detection;

[0063] S23. The leveling actuator performs secondary or multiple fine-tuning according to the newly detected inclination angle until the inclination degree returns within the preset threshold.

[0064] Further, the remote monitoring and control steps include:

[0065] S31. The cloud management platform performs real-time analysis and storage on the received measurement data, and generates a flow measurement curve or report;

[0066] S32. The user sets measurement parameters or alarm thresholds in the cloud management platform and sends them to the main control unit of the current meter through the wireless communication module;

[0067] S33. The main control unit adjusts the measurement frequency, sensor calibration mode, or leveling execution strategy according to the sent instructions, and continuously feeds back the status information to the cloud management platform in subsequent operations.

[0068] Compared with the prior art, the beneficial effects of the present invention are as follows: This combined current meter is foldable. For long-term field exploration, investigation, research, survey, etc., a large number of tools need to be carried. This invention can be folded, is small and portable, which reduces the work equipment; it has scales. When measuring the flow with the three weir plates, the readings are required to be horizontal. However, field operations are often affected by terrain and landforms. In addition, the ruler is perpendicular to the weir mouth instrument, and affected by human operation, the readings are often inaccurate. The scales eliminate the interference of human readings. A level is added in the design to obtain accurate flow data, providing relatively accurate and reliable data support for production and scientific research; it can be taken in combination. The measurement ranges of a single triangular weir, trapezoidal weir, and rectangular weir all have limitations and errors. After combination, it can be selectively combined according to the measured flow, which can greatly improve the measurement accuracy and range; the rectangular weir of this current meter is made of plastic rigid material, and the triangular weir and trapezoidal weir are made of transparent rigid material. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 It is a schematic structural diagram of the mountain-type intelligent combined current meter provided by an embodiment of the present invention;

[0070] Figure 2 It is a schematic structural diagram of the leveling system provided by an embodiment of the present invention;

[0071] Figure 3Flow measurement method flowchart of the mountain - type intelligent combined flowmeter provided by the embodiments of the present invention;

[0072] Figure 4 Preliminary horizontal calibration flowchart of the outer box leveling system provided by the embodiments of the present invention;

[0073] Figure 5 Automatic leveling flowchart when detecting external environmental changes provided by the embodiments of the present invention;

[0074] Figure 6 Remote monitoring and control flowchart provided by the embodiments of the present invention;

[0075] Figure 7 Mechanical structure diagram of the mountain - type intelligent combined flowmeter provided by the embodiments of the present invention;

[0076] Figure 8 Top view and side view of the rectangular weir provided by the embodiments of the present invention;

[0077] In the figure: 1 rectangular weir, 2 rectangular weir flow plate, 3 millimeter scale, 4 level instrument, 5 triangular weir, 6 trapezoidal weir. Specific embodiments

[0078] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the protection scope of the present invention.

[0079] As Figure 1 shown, the embodiments of the present invention provide a mountain - type intelligent combined flowmeter, including:

[0080] A measurement system. The core function of the flowmeter is to collect and analyze the fluid flow rate. Usually, it integrates a flow velocity sensor, a pressure / liquid level sensor or other sensing elements suitable for the target environment inside to obtain the physical parameters of the real - time water flow or fluid. When the fluid passes through the measurement area, the sensor transmits the detected signals such as flow velocity, water level or pressure difference to the data acquisition module. The data acquisition module will convert the measured original physical quantity into quantifiable flow information according to the pre - set measurement formula or calibration curve. At the same time, in order to improve the measurement accuracy, when designing the flowmeter, it is necessary to ensure the accurate alignment and horizontal placement of the measurement unit with the water flow direction, so as to reduce the data error caused by the inclination of the sensor.

[0081] Leveling system. To adapt to uneven ground surfaces and other conditions in the field, an externally box structure that can self-level is provided outside the current meter. Inside the box, high-precision inclination sensors (or gyroscopes) and a micro-leveling mechanism with multiple supports are arranged. Before the measurement starts, the sensor will detect the current attitude of the box. If a deviation from the theoretical horizontal plane is found, the control unit will send instructions to the servo motor or hydraulic / pneumatic balance device to fine-tune the box through multiple support feet or support surfaces until the box and the core measurement unit of the instrument are in a horizontal state. This process can be monitored in real time during the measurement and quickly correct the tilt to avoid measurement inaccuracies caused by ground settlement, external impacts, or environmental vibrations;

[0082] Remote control system. On the basis of the normal operation of the leveling and measurement units, the current meter is also integrated with a remote intelligent control system to achieve wireless data transmission and remote operation. Specifically, the data acquisition module inside the device will first digitally process the sensor information such as flow rate, liquid level, and temperature measured, and then upload it to the cloud management platform through a wireless communication module (such as cellular network, Wi-Fi, or LoRa, etc.). The cloud management platform provides a visual data monitoring interface for users, which can display real-time or historical measurement data, and can alarm abnormal situations according to thresholds or statistical results. At the same time, the remote control function will also send the measurement parameters or instructions set by the user in the cloud (such as recalibration, adjustment of measurement frequency, start or pause of measurement, etc.) to the main control unit of the current meter through the same communication link, so as to achieve remote management of the instrument.

[0083] Multi-system coordination and comprehensive guarantee

[0084] In actual use, the leveling system and the remote control system are closely coordinated: when the remote system detects a drastic change in the external environment, or judges that the tilt angle of the instrument exceeds the allowable value according to the sensor, it will trigger the leveling mechanism of the box to immediately correct the attitude; if the correction cannot be completed within the specified time or the tilt exceeds the safe range, the system will send an alarm to the cloud to remind the operation and maintenance personnel to handle it in time. In addition, the measurement results of the current meter body will also be corrected and judged in combination with the attitude data transmitted in real time by the leveling system to minimize the measurement errors caused by environmental changes or random interferences during use. Through the above multi-system linkage, the mountain-type intelligent combined current meter can maintain high-precision flow monitoring in various scenarios and complex environments, and at the same time has the characteristics of remote visualization and intelligent control, greatly improving the measurement efficiency and data reliability.

[0085] Working principle of the measurement system

[0086] The core of the current meter lies in the accurate acquisition and analysis of fluid flow rate or corresponding physical quantities. Usually, various types of sensors are arranged inside to meet different measurement requirements, such as:

[0087] Flow velocity sensor: Obtains flow velocity information by detecting the rotation, frequency change, or Doppler effect generated when water flows through the probe.

[0088] Pressure / liquid level sensor: Reflects the water level change in the form of liquid column height or pressure difference, and thus calculates the flow rate.

[0089] Auxiliary sensors such as temperature and humidity: Provide reference parameters for environmental calibration and data correction.

[0090] When the fluid to be measured enters the measurement area, the sensor outputs the collected physical quantity to the data acquisition module in the form of an analog signal or a digital signal. The data acquisition module converts the original signal into the corresponding flow rate value according to the pre-set measurement formula or calibration curve (this curve is usually obtained during factory or on-site calibration). For example, if a pressure / liquid level sensor is used, the instantaneous flow rate can be calculated by measuring the head difference, flow velocity, and the cross-sectional area of the pipeline or weir opening; if a Doppler flow velocity probe is used, the fluid flow velocity can be judged by the magnitude of the echo frequency shift and further converted into the flow rate.

[0091] To ensure the accuracy of the measurement results, the following points need to be achieved in the structural design of the instrument:

[0092] 1. Sensor alignment: Ensure that the flow velocity sensor, weir plate, or guide pipe is parallel to the water flow direction or within a pre-set angular range to avoid measurement errors.

[0093] 2. Horizontal placement: Use a spirit level or an external leveling mechanism to align the sensor with the reference horizontal plane to reduce the measurement deviation caused by the offset of the gravity direction.

[0094] 3. Stable installation: In the field environment, place or fix the instrument on a support platform that is as stable as possible to prevent external forces such as water flow impact and personnel touch from causing shaking and affecting data stability.

[0095] After the data acquisition is completed, the main control unit will perform preliminary processing on the acquired data, such as outlier rejection, average value calculation, and real-time monitoring based on the set threshold. The finally obtained flow rate data can be recorded in the local memory or transmitted wirelessly to the remote monitoring platform to provide support for subsequent analysis, decision-making, or scheduling.

[0096] Working principle of the outer box leveling system

[0097] The outer box leveling system developed for the complex terrain in the field aims to ensure that the core measurement unit of the flowmeter can automatically correct its own horizontal attitude, thereby reducing the tilt error caused by uneven bottom surfaces or external disturbances. Its specific working process is as follows:

[0098] (1) Attitude detection:

[0099] The high-precision inclination sensor or gyroscope integrated inside the outer box will collect the angle information between the current outer box and the horizontal plane in real time at a certain frequency (such as multiple times per second). This information usually includes the inclination angles in the lateral and longitudinal directions; in the case of severe vibration or shock of the device, an acceleration sensor can also be combined to monitor the attitude more comprehensively.

[0100] (2) Data analysis:

[0101] The inclination angle data detected by the sensor will be transmitted to the control unit (such as a microcontroller or an embedded system). Based on the pre-set leveling algorithm (including attitude feedback, error tolerance, and fine-tuning strategy), the control unit determines whether to perform a leveling operation.

[0102] If the detected inclination angle exceeds the design threshold (for example, ±1° or a smaller range), the control unit will immediately send an instruction to the actuator.

[0103] (3) Actuator adjustment:

[0104] The actuator can be a micro stepping motor, a servo motor plus a gear mechanism, or may also use a hydraulic or pneumatic balancing device. Multiple support points are usually symmetrically distributed on the bottom of the outer box or the internal support platform, and the attitude is corrected by lifting or tilting fine-tuning.

[0105] When the control unit issues an "up" or "down" instruction, the corresponding motor or hydraulic rod will act to lift or lower a specific support point in a micro-stepping manner, achieving precise leveling of the outer box in the lateral, longitudinal, or three-dimensional directions.

[0106] (4) Real-time correction and feedback:

[0107] During the leveling process, the inclination sensor will continuously monitor the attitude change to form a closed-loop control. As the support point moves, the inclination angle data is continuously updated and fed back to the control unit until the inclination returns within the allowable range.

[0108] If external forces interfere continuously (such as wind, ground vibration, fluid impact, etc.), the system will repeatedly execute the leveling instruction according to the new inclination data to maintain the horizontal attitude of the core measurement module of the flowmeter.

[0109] The entire leveling process needs to ensure fast response while avoiding overshoot and vibration as much as possible, which is usually achieved by optimizing the control algorithm and setting soft start and soft stop strategies.

[0110] (5) Safety and exception handling:

[0111] If the leveling system detects that the inclination of the instrument exceeds the safe range (such as exceeding a certain angle or taking too long to level), an alarm will be generated and the abnormal information will be recorded. At the same time, an alarm signal can be sent to the remote monitoring platform to prompt the operator to perform manual intervention or on-site inspection.

[0112] In some extreme environments (such as strong earthquakes or flood impacts), the system may not be able to complete effective automatic leveling. In this case, the operation and maintenance personnel should adopt a more stable installation method according to the actual situation or evacuate the instrument from the dangerous area.

[0113] Through the coordinated operation of the above-mentioned multiple links, the outer box leveling system can maintain the accurate measurement attitude of the current meter in a complex outdoor environment, reduce the tilt error and the reading deviation caused by uneven terrain from the source, and ensure the reliability and accuracy of the data.

[0114] Working principle of remote intelligent control and monitoring

[0115] After successfully solving the instrument leveling and measurement accuracy, the mountain-type intelligent combined current meter also realizes the real-time monitoring and centralized management of the measurement process and operation status through the remote intelligent control system. The specific working process is as follows:

[0116] (1) Data acquisition and digitization

[0117] The original sensor signals such as measured flow, liquid level, temperature, and pressure will first be input into the data acquisition module. This module usually consists of a high-precision analog-to-digital converter (ADC) and a filter circuit to complete the digitization, noise reduction, and preliminary correction of analog signals.

[0118] The acquired digitized data can be subjected to necessary operations or preprocessing locally (such as outlier rejection, statistical average, data compression) to prepare for subsequent wireless transmission.

[0119] (2) Wireless communication and platform interaction

[0120] The preprocessed data will be sent to the cloud management platform through a wireless communication module (such as 4G / 5G cellular network, Wi-Fi, or LoRa, etc.). The transmission protocol can adopt MQTT, HTTP, or a custom protocol to ensure stable and reliable information transmission under different bandwidth and network conditions.

[0121] The cloud management platform receives, stores, and analyzes the uplink data in real time, and presents it in various forms such as charts, curves, or geographical locations on the visualization interface to help users quickly understand the device operation status and measurement results. Users can also call historical data at any time for trend analysis or comparative research.

[0122] (3) Remote control and instruction issuance

[0123] The platform side also has a remote control function, allowing users to configure the parameters of the current meter on the web or mobile side. For example:

[0124] Adjust the measurement frequency: Set a faster or slower sampling interval under different flow change rates.

[0125] Re - calibrate: When there is a large deviation, send a calibration instruction to the current meter to make it perform a reference self - check again.

[0126] Work mode switching: Switch the current meter to low - power mode, continuous monitoring mode, or timed monitoring mode, etc., according to different monitoring objectives or energy consumption requirements.

[0127] After the instruction is parsed by the main control unit, it will reset the internal parameters of the current meter or execute specific device operations (such as restarting the leveling system or recalibrating the sensor), so as to achieve true remote management and flexible operation and maintenance.

[0128] (4) Alarm and safety mechanism

[0129] To detect and handle device anomalies in a timely manner, the platform usually sets multiple alarm rules. When the measured value exceeds the safety threshold (such as sudden increase in flow, abnormal temperature), the device tilts excessively, or the communication is interrupted for more than the specified duration, the system will automatically trigger an alarm.

[0130] The alarm information will be notified to the relevant operation and maintenance personnel to take measures by means of text messages, emails, or mobile push. At the same time, the device side can also execute emergency shutdown or restart operations according to the built - in logic to avoid hardware damage or safety accidents.

[0131] Multi - system collaboration and comprehensive guarantee

[0132] The entire current meter consists of a measurement system, a leveling system, and a remote intelligent control system, and the three together form a complete closed - loop control and monitoring system:

[0133] 1. Information closed - loop and mutual compensation

[0134] The flow or tilt data obtained by the measurement unit will be transmitted to the leveling system in real time for correction reference; if the leveling system is in a frequent action state, it means that the environmental stability is insufficient, which may impact the measurement accuracy. At this time, the measurement unit can adaptively adjust the sampling strategy, such as increasing the sampling frequency to capture drastic changes, or pausing the measurement during the leveling process to avoid interference.

[0135] When the remote intelligent control system detects abnormal fluctuations in measurement data or frequent alarms, it will further retrieve the attitude records of the leveling system to determine whether the deviation is caused by reasons such as ground vibration or external impact. If the instrument attitude is indeed abnormal, it will send instructions to activate or strengthen the leveling action to quickly restore the normal state.

[0136] 2. Fault Diagnosis and Fault Tolerance Mechanism

[0137] During the multi-system collaboration of the current meter, potential fault hazards are inevitable, such as sensor failures, unstable network communication, and leveling motor jams. Through the mutual comparison of tripartite data and historical trend analysis, the system can detect abnormalities in a timely manner. For example, if the flow rate data has been hovering within a very small or very large value range, and the leveling system has not detected any obvious inclination, it may indicate a sensor failure or blockage.

[0138] After detecting potential faults, the control system can attempt a soft reset (such as restarting the sensor or communication module) or guiding the outer box leveling system to restart to quickly repair small-scale faults; if it still cannot be restored, it will upload alarm information to request manual intervention.

[0139] 3. Collaborative Optimization and Energy Consumption Balance

[0140] During actual operation, to balance equipment battery life and measurement accuracy, the system can dynamically allocate the working modes of each unit according to the environment and data requirements. For example, during late-night hours when the flow rate changes smoothly and the ground shakes less, the measurement frequency and leveling monitoring frequency can be lowered to reduce power consumption; when sudden flow rate changes or external strong interferences are detected, the monitoring, calibration, and data transmission frequencies will be automatically increased.

[0141] Through the remote intelligent control platform, managers can flexibly define the operation strategies of the instrument based on different usage scenarios (such as short-term measurement, long-term fixed-point monitoring, periodic sampling), enabling multi-system collaboration while taking into account energy consumption, accuracy, and service life.

[0142] 4. Cross-regional and Multi-point Collaborative Monitoring

[0143] In large-scale environmental monitoring or regional water conservancy projects, multiple intelligent current meters are usually deployed to achieve full coverage. Each instrument has the capabilities of automatic leveling, remote monitoring, and data reporting, and the cloud platform can uniformly dispatch multiple devices to analyze the flow distribution within the spatial range.

[0144] When abnormal fluctuations occur at a certain measurement point, the platform can automatically retrieve the data of adjacent measurement points for comparison to determine whether it is a local phenomenon or a regional problem; if it is confirmed as a local anomaly, the fault point can be further accurately located and quickly investigated.

[0145] In summary, the mountain - type intelligent combined flowmeter provided by the embodiments of the present invention can still maintain high - precision, stable and efficient flow measurement in complex and changeable outdoor or industrial environments through the multi - layer collaboration of the leveling system, the measurement unit and the remote intelligent control platform. The scalability and remote controllability of the system also provide sufficient technical guarantees for subsequent function upgrades and multi - point collaborative monitoring.

[0146] Another object of the present invention is to provide a flow measurement method for a mountain - type intelligent combined flowmeter, including the following steps:

[0147] S101, deploy the flowmeter at the fluid site to be measured, and perform preliminary horizontal calibration through the outer box leveling system;

[0148] S102, start the measurement unit, collect the flow velocity, liquid level and other environmental parameters, and generate preliminary measurement data;

[0149] S103, transmit the preliminary measurement data to the data acquisition module for digitization and pre - processing;

[0150] S104, send the pre - processed data to the cloud management platform through the wireless communication module, and display or store the measurement results in real time in the cloud management platform.

[0151] Further, the preliminary horizontal calibration of the outer box leveling system includes:

[0152] S11, the inclination sensor detects the deviation between the flowmeter and the horizontal plane;

[0153] S12, the control unit sends an adjustment instruction to the leveling actuator inside the outer box according to the deviation;

[0154] S13, the leveling actuator raises or lowers through the support feet or the support surface until the inclination returns to the preset range.

[0155] Further, the method also includes an automatic leveling step when detecting external environmental changes, specifically:

[0156] S21, when the remote monitoring system or the internal sensor of the flowmeter detects ground vibration, external impact or the outer box tilt angle exceeding the limit, generate an automatic leveling trigger signal;

[0157] S22, upload the automatic leveling trigger signal to the control unit, and the control unit re - performs the inclination detection;

[0158] S23, the leveling actuator performs secondary or multiple fine - adjustments according to the re - detected tilt angle until the tilt degree returns within the preset threshold.

[0159] Further, the remote monitoring and control steps include:

[0160] S31. The cloud management platform performs real-time analysis and storage on the received measurement data, and generates a flow measurement curve or report.

[0161] S32. The user sets measurement parameters or alarm thresholds in the cloud management platform and sends them to the main control unit of the flowmeter through the wireless communication module.

[0162] S33. The main control unit adjusts the measurement frequency, sensor calibration mode or leveling execution strategy according to the sent instruction, and continuously feeds back status information to the cloud management platform in subsequent operations.

[0163] Please refer to Figures 7-8 , the present invention provides a technical solution: a combined flowmeter, including a rectangular weir 1, a millimeter scale 3, a level instrument 4, a triangular weir 5, and a trapezoidal weir 6. The rectangular weir 1 is provided with a rectangular weir flow plate 2. The rectangular weir flow plate 2 is set in two groups. The millimeter scale 3 is set in two groups. The millimeter scale 3 is arranged on the rectangular weir flow plate 2. The level instrument 4 is arranged at the upper end of the rectangular weir 1. The triangular weir 5 is fixedly connected to the rectangular weir 1 by bolts to form a combined body of a rectangular weir and a triangular weir. The trapezoidal weir 6 is fixedly connected to the rectangular weir 1 by bolts to form a combined body of a rectangular weir and a trapezoidal weir. This combined flowmeter can be folded. For long-term field reconnaissance, investigation, research, exploration and other work, a lot of tools need to be carried. This invention can be folded, is small and portable, which can reduce the work equipment. It has scales. When measuring the flow with the three weir plates, the readings are required to be horizontal. However, field operations are often affected by the terrain and landform. In addition, the ruler is perpendicular to the weir mouth instrument, and affected by human operation, the readings are often inaccurate. Having scales can eliminate the interference of human readings. A level is added in the design to obtain accurate flow data, providing relatively accurate and reliable data support for production and scientific research. It can be combined. The measurement ranges of a single triangular weir, trapezoidal weir and rectangular weir all have limitations and errors. After combination, it can be selectively combined according to the measured flow, which can greatly improve the measurement accuracy and range. The rectangular weir of this flowmeter is made of plastic rigid material, and the triangular weir and trapezoidal weir are made of transparent rigid material.

[0164] The core of the combined flowmeter of the present invention lies in using the rectangular weir 1 as the main support and positioning base, and components such as a rectangular weir flow plate 2, a millimeter scale 3 and a level instrument 4 are arranged above it. When measuring the flow, the rectangular weir flow plate 2 has a vertical water-blocking relationship with the water flow to be measured, and the head difference generated at the weir mouth is used to calculate the flow. Since the level instrument 4 is arranged at the upper end of the device, when the user places this flowmeter in the field, the overall posture of the flowmeter can be adjusted by observing the position of the bubble of the level instrument 4, ensuring the predetermined positional relationship between the weir plate, the water flow direction and the horizontal plane, and thus obtaining more accurate measurement data.

[0165] To meet the measurement requirements under different flow ranges, at the front end or side of the rectangular weir 1, the triangular weir 5 or trapezoidal weir 6 is fixedly connected to the rectangular weir 1 by bolts, thus realizing the combined measurement mode between the rectangular weir and the triangular weir and trapezoidal weir. When the user needs to accurately measure a relatively small flow, the triangular weir 5 can be installed on the rectangular weir 1; when measuring a relatively large flow, the trapezoidal weir 6 can be used in combination with the rectangular weir 1. Through this detachable connection method, the weir plate combination can be quickly replaced at the construction site, greatly improving the flexibility of the measurement range and measurement accuracy.

[0166] The rectangular weir plate 2 and the millimeter scale 3 are assembled and connected through a card slot or a reserved hole position, ensuring that the scale 3 is always perpendicular to the weir plate and can be firmly fixed at the weir opening. In this way, even under the impact of water flow or external force, the scale 3 can still maintain an accurate reading reference position. The whole device can be folded or stored in a segmented manner in terms of its external design. When used on-site, only the components need to be combined according to the pre-set assembly relationships such as plugging, buckling, and bolts, which saves time and effort. The fixed installation of the rectangular weir 1 and the level instrument 4 is calibrated again by the level instrument 4 after the assembly is completed, further ensuring the overall stability and horizontal state of the flowmeter.

[0167] In terms of function, the present invention guarantees the flow measurement accuracy through three major elements: one is the flexible switching of the combined weir plates (rectangular weir, triangular weir, trapezoidal weir), enabling the flowmeter to adapt to different flow velocities and water volumes; the second is that the millimeter scale 3 is perpendicular to the weir opening and is set at a position where the line of sight is easy to observe, reducing the human reading error in the field environment; the third is that the level instrument 4 assists in achieving the correct installation attitude, ensuring that the water level reading is consistent with the designed reference plane. Thus, in various scenarios such as field exploration, construction survey, and scientific research, it can provide reliable technical support for obtaining accurate flow data. At the same time, the foldable structure and the design of using lightweight materials also greatly reduce the difficulty of carrying and using.

[0168] The first embodiment is based on a portable flowmeter. By combining an embedded microcontroller and a wireless communication module, it realizes the remote real-time monitoring and control of flow data. This flowmeter is mainly applied in scenarios such as small rivers or factory workshops. Since it often needs to be deployed temporarily or mobilely, how to ensure the measurement accuracy in a simply built environment is the key point of improvement in this embodiment. For this reason, an outer box structure with an automatic leveling function is newly added outside the instrument, so that even when the instrument is placed on a slightly sloping or uneven ground, the internal sensor module can maintain a horizontal state.

[0169] At the hardware level, Wi-Fi or LoRa is selected as the main communication method in this embodiment, facilitating remote data transmission in scenarios with a certain network foundation or short to medium distances. High-precision flow sensors, temperature / humidity sensors, etc. are equipped inside the current meter. After all data is collected in real-time by the embedded microcontroller, it is uploaded to the cloud platform through the wireless module. At the software level, a supporting Web or mobile application is provided, visually displaying flow velocity, flow rate, and environmental parameters, and supporting functions such as remote parameter setting, calibration, and device fault diagnosis. This system greatly improves the operability and maintenance efficiency of the current meter in the wild and industrial sites.

[0170] The outer box uses an integrated aluminum alloy shell and is equipped with a two-axis inclinometer sensor and a micro stepping motor. After the real-time inclination data is obtained by the inclinometer sensor, it is sent to the microcontroller for analysis. When it is detected that there is a deviation between the outer box and the horizontal plane, the driving motor gradually adjusts the relative position of the device through a small gear mechanism to achieve fast and precise leveling. The bottom of the outer box is designed with retractable support foot pads, which can adapt to small-scale terrain undulations. This external leveling mechanism simplifies the requirements for the placement position of the operator while ensuring the measurement accuracy.

[0171] The second embodiment is mainly aimed at large-scale and long-term use scenarios such as sparsely populated areas, springs, rivers, lakes governance, and hydrological monitoring in mining areas. The instrument is often placed in the river or near the monitoring section and needs to perform long-term continuous observations. To ensure high-precision measurement under unattended or complex environmental conditions, in addition to enhancing the remote control ability, this embodiment also upgrades the driving and leveling structure of the outer box to adapt to larger-angle inclinations and more severe terrains.

[0172] In the communication solution, this embodiment selects public cellular networks such as GPRS / 4G / 5G as the main transmission method, and at the same time reserves a satellite communication interface, which can upload data using a satellite link in areas with insufficient network coverage. The remote control and monitoring platform integrates big data analysis and alarm modules, which can perform trend analysis, threshold alarm, and historical record playback on river hydrological data, etc.; when the system detects abnormal flow or the instrument inclination exceeds the limit, the platform will push alarm information to the operation and maintenance personnel in the first time. In addition, more comprehensive integrated monitoring can be achieved by cooperating with external sensors (such as rain gauges, video monitoring, etc.).

[0173] The outer box of this embodiment adopts a multi-compartment waterproof design. The internal leveling mechanism uses a micro servo motor combined with a hydraulic strut to achieve rapid correction within a large angle range. The attitude detection algorithm based on multi-sensor fusion can utilize the data of both the gyroscope and the acceleration sensor simultaneously, improving the stability of the outer box in a severely jittery environment. To facilitate long-term field operation, adjustable clamps or fixtures can be additionally installed at the bottom of the outer box, directly anchored to the riverbed or slope protection structure to ensure stability even under water flow impact or external interference, guaranteeing the long-term and high-precision operation of the "mountain-type intelligent combined flowmeter" in harsh scenarios.

[0174] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent combined flowmeter for mountainous areas, characterized in that Including: A measurement system for collecting and analyzing fluid flow rate, integrated with a flow velocity sensor, a pressure / liquid level sensor. The sensors transmit the detected flow velocity, water level or pressure difference signals to the data acquisition module. The data acquisition module converts the original physical quantity into quantifiable flow information according to a pre-set measurement formula or calibration curve; A leveling system, an autonomous leveling outer box structure arranged outside the flowmeter, suitable for use in mountainous terrains; inside the outer box, there are high-precision inclination sensors or gyroscopes and a micro-leveling mechanism with multiple supports; before measurement or during operation, when it is detected that there is a deviation between the outer box and the horizontal plane, the control unit fine-tunes multiple support feet or support surfaces through a servo motor or a hydraulic / pneumatic balance device to keep the outer box and the core measurement unit level; A remote control system, including a data acquisition module and a wireless communication module. The wireless communication module uses a cellular network, a wireless local area network or a long-distance communication method to upload sensor information such as flow rate, liquid level, and temperature to the cloud management platform; the cloud management platform can perform remote parameter configuration and instruction issuance for the flowmeter. When it detects a drastic change in the external environment or the instrument tilt angle exceeds a preset value, it sends a leveling instruction to the flowmeter through the same communication link. If the leveling times out or the tilt exceeds the safe range, it sends an alarm message to the cloud; Attitude correction is linked with the measurement result. In the complex mountainous terrain, when the leveling system corrects the attitude, the measurement result of the flowmeter body is synchronously calibrated with the real-time attitude data to reduce the measurement deviation caused by terrain fluctuations or installation errors and ensure the measurement accuracy and stability in the mountain environment.

2. The mountain - type intelligent combined flowmeter according to claim 1, characterized in that, The sensors include: A flow velocity sensor: Obtains flow velocity information by detecting the rotation, frequency change or Doppler effect generated when water flows through the probe; A pressure / liquid level sensor: Reflects the water level change in the form of liquid column height or pressure difference, so as to calculate the flow rate; Temperature and humidity auxiliary sensors: Provide reference parameters for environmental calibration and data correction; After the data acquisition is completed, the main control unit will perform preliminary processing on the obtained data, including outlier rejection, average value calculation and real-time monitoring based on a set threshold; the finally obtained flow rate data can be recorded in the local memory or transmitted wirelessly to the remote monitoring platform to provide support for subsequent analysis, decision-making or scheduling.

3. The mountain-type intelligent combined flowmeter according to claim 1, characterized in that, The specific working process of the outer box leveling system is as follows: (1) Attitude detection: The high-precision inclination sensor or gyroscope integrated inside the outer box will collect the included angle information between the current outer box and the horizontal plane in real time at a certain frequency; this information usually includes the tilt angles in the horizontal and vertical directions; if the device is in a severe vibration or impact situation, the acceleration sensor is combined to monitor the attitude more comprehensively; (2) Data analysis: The tilt angle data detected by the sensor will be transmitted to the control unit, including a microcontroller or an embedded system; the control unit judges whether to perform a leveling operation based on a pre-set leveling algorithm, including attitude feedback, error tolerance and fine-tuning strategy; If it is detected that the tilt angle exceeds the design threshold, the control unit will immediately send an instruction to the actuator; (3) Actuator adjustment: The actuator is a micro stepping motor, a servo motor plus a gear mechanism, or a hydraulic or pneumatic balancing device; multiple support points are usually symmetrically distributed on the bottom of the outer box or the internal support platform, and the attitude is corrected by lifting or tilting for fine adjustment; When the control unit issues an "upward adjustment" or "downward adjustment" instruction, the corresponding motor or hydraulic rod will act to lift or lower a specific support point in a micro-stepping manner, achieving precise leveling of the outer box in the horizontal, vertical or three-dimensional directions; (4) Real-time correction and feedback: During the leveling process, the inclination sensor continuously monitors the attitude change to form a closed-loop control; as the support point moves, the tilt angle data is continuously updated and fed back to the control unit until the tilt degree returns within the allowable range; If external forces such as wind, ground vibration, and fluid impact continue to exist, the system will repeatedly execute the leveling instruction according to the new tilt data to maintain the horizontal attitude of the core measurement module of the flowmeter; The entire leveling process needs to ensure fast response while avoiding overshoot and vibration as much as possible, which is achieved by optimizing the control algorithm and setting soft start and soft stop strategies; (5) Safety and exception handling: If the leveling system detects that the inclination degree of the instrument exceeds the safety range, exceeds a certain angle or the leveling takes too long, an alarm will be generated and the abnormal information will be recorded; at the same time, an alarm signal can be sent to the remote monitoring platform to prompt the operator to perform manual intervention or on-site inspection; Under strong earthquake or flood impact, the system may not be able to complete effective automatic leveling. At this time, the operation and maintenance personnel should take a more stable installation method or evacuate the instrument from the dangerous area according to the actual situation.

4. The mountain-type intelligent combined flowmeter according to claim 1, characterized in that, The specific working process of the remote control system is as follows: (1) Data acquisition and digitization The original sensor signals of the measured flow rate, liquid level, temperature, and pressure are first input into the data acquisition module; this module usually consists of a high-precision analog-to-digital converter (ADC) and a filtering circuit to complete the digitization, noise reduction, and preliminary correction of the analog signal; The acquired digitized data can be subjected to necessary operations or preprocessing locally, including outlier rejection, statistical average value, and data compression, to prepare for subsequent wireless transmission; (2) Wireless communication and platform interaction The preprocessed data is sent to the cloud management platform through the wireless communication module. The wireless communication module includes 4G / 5G cellular network, Wi-Fi or LoRa; the transmission protocol can adopt MQTT, HTTP or a custom protocol to ensure stable and reliable information transmission under different bandwidth and network conditions; The cloud management platform receives, stores, and analyzes the uplink data in real time, and presents it in various forms such as charts, curves, or geographical locations on the visualization interface to help users quickly understand the device operation status and measurement results; users can also call historical data at any time for trend analysis or comparative research; (3) Remote control and instruction issuance The platform side also has a remote control function, allowing users to configure the parameters of the flowmeter on the web page or mobile terminal; Including: Adjust the measurement frequency: Set a faster or slower sampling interval under different flow rate change rates; Recalibration: When a large deviation occurs, a calibration instruction is sent to the current meter to make it perform a reference self-check again; Working mode switching: For different monitoring targets or energy consumption requirements, the current meter is switched to the low-power mode, continuous monitoring mode or timed monitoring mode; After the instruction is parsed by the main control unit, the internal parameters of the current meter are reset accordingly or specific device operations are executed, including restarting the leveling system or restarting the calibration of the sensor, so as to achieve true remote management and flexible operation and maintenance; (4) Alarm and safety mechanism The platform sets multiple alarm rules; when the measured value exceeds the safety threshold (such as sudden increase in flow, abnormal temperature), the device tilts excessively, or the communication is interrupted for more than the specified duration, the system will automatically trigger an alarm; The alarm information will be notified to relevant operation and maintenance personnel to take measures through text messages, emails or mobile device push; at the same time, the device side can also execute emergency shutdown or restart operations according to the built-in logic to avoid hardware damage or safety accidents.

5. The mountain-type intelligent combined flow measuring instrument according to claim 1, characterized in that, The mountain-type intelligent combined current meter includes a rectangular weir (triangular weir, trapezoidal weir), millimeter scale, and level instrument. The rectangular weir is provided with a rectangular weir flow plate. The rectangular weir flow plate is set in two groups. The millimeter scale is set in two groups. The millimeter scale is arranged on the rectangular weir flow plate. The level instrument is arranged at the upper end of the rectangular weir. The triangular weir is fixedly connected to the rectangular weir by bolts to form a combined body of rectangular weir and triangular weir. The trapezoidal weir is fixedly connected to the rectangular weir by bolts to form a combined body of rectangular weir and trapezoidal weir.

6. The mountain-type intelligent combined flow measurement instrument according to claim 5, characterized in that One side of the rectangular weir is provided with a diversion channel; the bottom angle of the water passing section of the triangular weir is 90°; the water passing section of the trapezoidal weir is a Simpson trapezoid, and the inclination ratio of its hypotenuse in the height direction is 4:

1.

7. A flow measurement method for the mountain-type intelligent combined flowmeter according to any one of claims 1 to 6, characterized in that, It includes the following steps: Step 1, deploy the current meter at the fluid site to be measured, and perform preliminary horizontal calibration through the outer box leveling system; Step 2, start the measurement unit, collect flow velocity, liquid level and other environmental parameters, and generate preliminary measurement data; Step 3, transmit the preliminary measurement data to the data acquisition module for digitization and preprocessing; Step 4, send the preprocessed data to the cloud management platform through the wireless communication module, and display or store the measurement results in real time in the cloud management platform.

8. The flow measurement method of the mountain - type intelligent combined flowmeter according to claim 7, characterized in that, The preliminary horizontal calibration of the outer box leveling system includes: S11, the inclination sensor detects the deviation between the current meter and the horizontal plane; S12, the control unit sends an adjustment instruction to the leveling actuator in the outer box according to the deviation; S13, the leveling actuator raises or lowers through the support feet or support surface until the inclination angle returns to the preset range.

9. The flow measurement method of the mountain-type intelligent combined flowmeter according to claim 7, characterized in that, The method also includes an automatic leveling step when detecting external environmental changes, specifically: S21, when the remote monitoring system or the internal sensor of the current meter detects ground vibration, external impact or the outer box tilt angle exceeds the limit, an automatic leveling trigger signal is generated; S22, upload the automatic leveling trigger signal to the control unit, and the control unit re-performs inclination detection; S23, the leveling actuator performs secondary or multiple fine-tuning according to the re-detected tilt angle until the tilt degree returns within the preset threshold.

10. The flow measurement method of the mountain-type intelligent combined flowmeter according to claim 7, characterized in that, The remote monitoring and control steps include: S31, The cloud management platform performs real-time analysis and storage on the received measurement data, and generates a flow measurement curve or report; S32, The user sets measurement parameters or alarm thresholds in the cloud management platform and sends them to the main control unit of the flow meter through the wireless communication module; S33, The main control unit adjusts the measurement frequency, sensor calibration mode or leveling execution strategy according to the sent instruction, and continuously feeds back status information to the cloud management platform in subsequent operations.

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