Self-adapting river trash blocking and compressing method and device based on flow rate sensing

Abstract

This invention discloses an adaptive river debris interception and garbage compression and packaging method and device based on flow velocity sensing, relating to river ecological management. The device comprises five modules: debris interception machinery, backup electric drive, garbage compression and packaging, sensing and detection, and main control. Operating data is collected through radar flow velocity sensors and ultrasonic volume sensors. The main control module coordinates with each module to achieve adaptive regulation. The method employs a river debris interception power adaptive switching algorithm, activating the backup electric drive module or adjusting the device angle based on water flow velocity to stabilize the speed of the belt conveyor unit for garbage transport. An adaptive garbage packaging threshold switching algorithm dynamically corrects the compression threshold, compressing garbage according to a pre-compression-main compression-holding-reset process. Simultaneously, data is uploaded to an IoT platform, enabling information prompts and remote control based on signal type. This invention features wide applicability, automation, and low cost, efficiently solving the problem of river garbage cleanup.

Description

Technical Field

[0001] This invention relates to the field of technology, and specifically to an adaptive method and apparatus for compressing and packaging river debris based on flow velocity sensing. Background Technology

[0002] With rapid urbanization and population growth, rivers, as key carriers for maintaining urban ecological balance, are facing increasingly prominent issues of floating debris pollution. Multiple factors, including household waste discharge, agricultural non-point source pollution migration, and the accumulation of natural degradation products, lead to frequent accumulation of garbage in rivers, not only damaging water quality and threatening the habitat of aquatic life, but also increasing the human and economic costs of river maintenance. Currently, although various technical solutions have emerged in the field of river pollution interception and cleaning, existing equipment still has significant shortcomings, failing to meet the practical needs of wide applicability, high automation, low cost, and low maintenance.

[0003] Chinese patent (publication number CN211713918U) discloses a hydraulically driven automatic collection device for channel debris. It collects debris into a collection box by using a float and a tentacle. However, it relies solely on hydraulic power and does not have a backup power system. When the water flow velocity in the channel is below 0.3 m / s, the waterwheel cannot rotate effectively, causing the debris collection operation to be interrupted. Furthermore, the device lacks a debris compression function, the collection box has a limited capacity, and frequent manual retrieval is required, resulting in low operation and maintenance efficiency.

[0004] Chinese patent (publication number CN107059818A) discloses a hydrodynamic self-cleaning trash rack system, which uses water flow power to achieve trash blocking and guidance through the cooperation of louvered gates and sliding rails. However, the system relies on a motor to drive the gate to slide, which still has the problem of power consumption. In addition, it does not involve the design of compression and storage after garbage collection. A large amount of garbage accumulation can easily lead to blockage of the trash collection channel, requiring an additional trash cleaning machine, which increases the complexity of the equipment and the procurement cost.

[0005] Chinese patent (publication number CN119980995A) discloses an adaptive river waste cleaning system and control system. The system converts water potential energy into energy through a rotating wheel to drive the collection plate to tilt and dump the waste. However, the system requires a floating device and a lifting device, which makes the structure complex and costly. At the same time, it does not consider the equipment protection design under high flow conditions. When the river flow speed exceeds 2.5m / s, the collection plate is easily damaged by impact. Furthermore, it lacks fault self-diagnosis and remote monitoring functions, making it difficult for maintenance personnel to grasp the equipment's operating status in real time.

[0006] In summary, existing river debris interception equipment suffers from a single power mode, which cannot adaptively switch according to water flow speed, resulting in poor adaptability; it lacks waste compression function, leading to low storage space utilization and high frequency of manual maintenance; and its automation level is insufficient, making it difficult to achieve remote control and fault early warning. Therefore, designing a river debris interception device that combines hydraulic-electric dual power switching, adaptive waste compression, remote monitoring, and strong environmental adaptability has become an urgent need to solve the current technical bottlenecks. Summary of the Invention

[0007] Based on the above-mentioned technical problems, this application discloses an adaptive river channel debris interception and garbage compression and baling device based on flow velocity sensing, specifically including: a debris interception mechanical module, a backup electric drive module, a garbage compression and baling module, a sensing and detection module, and a main control module;

[0008] The debris-blocking mechanical module includes a worm gear transmission unit, a belt conveyor unit, a mechanical frame, and auxiliary accessories. The worm gear transmission unit is driven by the impact of water flow on the blades, which converts the kinetic energy of the water flow into the mechanical energy of the belt conveyor, so that the floating debris in the river is guided to the belt conveyor unit through the baffle and the non-powered roller slide.

[0009] The backup power drive module provides power support to the debris-blocking mechanical module when the water flow power is insufficient, and includes a three-phase asynchronous motor, a reducer, a relay, and a contactor;

[0010] The waste compression and baling module receives waste conveyed by the belt conveyor unit and compresses and bales waste that has reached a set volume, including a hydraulic press, a waste collection bin, and an actuator.

[0011] The sensing and detection module includes a radar flow velocity sensor and an ultrasonic volume sensor, which respectively collect the river flow velocity and the height of garbage accumulation in the garbage collection bin.

[0012] The main control module is electrically connected to the backup electric drive module, the waste compression and packaging module, and the sensing and detection module.

[0013] Preferably, the main control module receives the flow velocity signal from the radar flow velocity sensor. When the water flow velocity is detected to be lower than the preset flow velocity threshold for 5 seconds, it controls the backup power drive module to start, which operates the three-phase asynchronous motor through relays and contactors, and drives the worm gear transmission through the reducer to ensure the stable operation of the belt conveyor unit. The main control module also receives the garbage accumulation signal from the ultrasonic volume sensor. When the garbage accumulation height is detected to reach the set threshold for 5 seconds, it controls the hydraulic press to start, and completes the garbage compression and packaging according to the pre-compression-main compression-holding-reset process. The holding time is 3 seconds, and after compression, the hydraulic press runs for 10 seconds and then resets.

[0014] The adaptive river debris interception and packaging method based on flow velocity sensing is as follows:

[0015] A garbage compression and baling device for intercepting and packing waste in the river channel is installed downstream of the river to monitor the river flow speed and the height of garbage accumulation.

[0016] Based on the river flow velocity, the river debris interception power adaptive switching algorithm is used to mobilize the debris interception mechanical module and the backup electric drive module to stably transport floating debris from the river to the riverbank garbage collection bin.

[0017] Based on the height of the garbage accumulation, the compression and packaging module is activated through an adaptive switching algorithm for the garbage packaging threshold, and the compression and packaging operation is performed according to the process of pre-compression-main compression-holding pressure-reset.

[0018] Upload operating status, flow rate data, and waste accumulation status to the IoT platform, and provide information prompts and remote control based on signal type.

[0019] Preferably, the method of installing the river channel debris interception and garbage compression and packaging device in the downstream of the river channel specifically involves: setting the garbage interception device and garbage conveying device of the debris interception mechanical module perpendicular to the river channel; deploying a radar flow velocity sensor on the bank or river channel support to collect the water surface flow velocity; and installing an ultrasonic volume sensor on the top of the riverbank garbage collection bin to detect the garbage accumulation height.

[0020] Preferably, the river channel debris interception dynamic adaptive switching algorithm is as follows: when the river water flow velocity is detected to be in the optimal working range, the debris interception mechanical module converts the kinetic energy of the water flow into the mechanical energy of the belt conveyor unit, and transports the floating debris in the river to the riverbank garbage collection bin.

[0021] When the river flow velocity is detected to be lower than the optimal operating range, the backup electric drive module ensures the stable operation of the belt conveyor unit.

[0022] When the water flow rate exceeds the optimal operating range, adjust the debris-blocking mechanical module and disconnect the backup power drive.

[0023] Preferably, when the water flow velocity is in the optimal operating range, specifically, the analog signal output by the radar current meter is converted into the actual water flow velocity.

[0024] When the flow rate meets the requirements, the water flow impacts the blades of the debris-blocking mechanical module, causing the worm to rotate. The worm acts as the driving component, driving the worm wheel to rotate.

[0025] The worm gear transmission unit, through gear linkage with the mesh filter conveyor belt, converts rotational kinetic energy into linear motion mechanical energy of the belt, enabling the belt to run stably within a specified speed range;

[0026] Floating debris in the river flows through the device under the action of water flow, and is guided by baffles and non-powered roller slides to the operating belt. The belt overcomes frictional resistance and transports the floating debris to the riverbank garbage collection bin.

[0027] Preferably, when the water flow velocity is below or above the optimal operating range, specifically, an anti-vibration delay threshold is set. Determine the actual water flow velocity Is the flow rate below the lower limit of the optimal operating range? When the flow rate is detected to be below the lower limit, initiate... If the insufficient flow rate condition is continuously met after a prolonged anti-vibration delay, the backup power drive module start command is automatically triggered, and the hydraulic drive priority is cut off. The intermediate relay is controlled to activate, and the contactor is linked to connect the three-phase asynchronous motor power supply. After the motor (0.5~5.5kW, IP65 protection level) starts, the speed is reduced and the torque is increased by the reducer (reduction ratio 10:1~50:1), which drives the worm gear transmission unit (the worm is made of carburized and quenched alloy steel, and the worm wheel is made of tin bronze) to operate.

[0028] The water flow velocity exceeds the upper limit of the optimal working range and continues After a certain period, if the backup power drive module is running, the PLC immediately outputs a cut-off signal to disconnect the contactor power supply via an intermediate relay, stopping the three-phase asynchronous motor and preventing power superposition from overloading the transmission system. The PLC then sends an angle adjustment command to the hydraulic actuator, dynamically adjusting the operating angle of the debris-blocking machinery based on the excess flow rate. The closer the flow rate is to the safety threshold, the larger the angle adjustment range. The formula is as follows:

[0029]

[0030] in, The adjusted angle of the debris barrier. As the initial working angle, To achieve the optimal workflow rate limit, For the safe flow rate threshold, This represents the maximum angle adjustment amount.

[0031] Preferably, the adaptive switching algorithm for the waste packaging threshold specifically involves: setting a preset filling time threshold. and continuous period threshold The system reads the sensor signal from the ultrasonic volume sensor, combines it with historical filling data to calculate the waste filling rate, and dynamically adjusts the volume threshold. If continuous The filling time within each unloading cycle is less than Automatically raise the volume threshold; if the filling time exceeds ,reduce ;

[0032] When the sensor detects that the height of the accumulated garbage has reached the dynamically corrected threshold... And continued During the specified time, the PLC outputs multi-stage compression start instructions to the waste compression and packaging module;

[0033] After the compression process is completed, the PLC detects the reset status of the hydraulic press through the limit switch and triggers an audible and visual alarm to prompt unloading. If the material is not unloaded within the preset unloading period, the secondary compression is automatically started to increase the pressure to the main pressure and extend the storage period.

[0034] Preferably, the multi-stage compression specifically involves: in the pre-compression stage, the hydraulic press piston rod extends at a low speed, and the pressure plate slowly contacts the surface of the waste to apply a preset pre-compression pressure;

[0035] During the main pressing stage, the pressure plate continuously applies pressure. The hydraulic press pressure parameters are determined based on the waste accumulation density and height, using the following formula:

[0036]

[0037]

[0038] in, Main pressure. Pre-compression pressure, For the density of garbage accumulation, It is the acceleration due to gravity. The height of the garbage pile, For safety reasons, This is the preload coefficient;

[0039] During the pressure holding phase, the operating time is determined based on the volume of waste, using the following formula:

[0040]

[0041] in, For the pressure holding time, This represents the actual volume of the waste. This refers to the total capacity of the trash can. This refers to the hydraulic press reset time.

[0042] During the reset phase, the PLC controls the hydraulic system's directional valve to switch, releasing the pressure inside the hydraulic cylinder; the hydraulic press piston rod retracts in the reverse direction, driving the pressure plate back to its initial position.

[0043] Preferably, the information prompting and remote control based on signal type specifically involves: dynamically adjusting the upload cycle according to data fluctuation amplitude to balance real-time performance and communication power consumption, as shown in the formula:

[0044]

[0045] in, For data upload cycle, Based on the basic upload cycle, Minimum upload interval The data value at the current moment. This is the data value from the previous moment. , These represent the maximum and minimum values ​​of the data.

[0046] The sensor analog signals are converted into engineering values ​​that can be displayed on the platform, and early warning priorities are assigned according to the fault type and the urgency of the operating condition. The formula is as follows:

[0047]

[0048] in, As a priority for early warning, For fault type weights, Fault level, For deviations from the weight of the operating condition, For parameter warning threshold, For parameter limit threshold, This is the current value of the parameter corresponding to the fault type.

[0049] Compared with the prior art, the technical solution of this application has the following technical effects:

[0050] This invention breaks through the limitations of the existing single power mode and adopts a hydraulic-electric dual power adaptive switching design. It monitors the water flow speed in real time through a radar flow velocity sensor. In the optimal flow velocity range, it uses hydraulic drive to save energy. When the flow velocity is insufficient, it starts the backup electric drive to ensure continuous operation. When the flow velocity exceeds the standard, it adjusts the angle of the debris-blocking machinery and cuts off the power, which greatly improves the adaptability of the equipment to different river flow velocity conditions.

[0051] This invention dynamically corrects the compression threshold through an adaptive switching algorithm for waste packing threshold, and achieves waste compression according to the process of pre-compression-main compression-holding compression-reset, which significantly improves the utilization rate of storage space, reduces the frequency of manual retrieval and maintenance, and lowers maintenance costs.

[0052] This invention uploads equipment operating status, flow rate, and waste accumulation data to an Internet of Things (IoT) platform to enable remote control, fault warning, and priority determination, thereby improving the automation and intelligence level of the equipment.

[0053] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0054] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0056] Based on the description of the figures and their corresponding technical content in the document, the titles of the figures are as follows:

[0057] Figure 1 This is a structural diagram of an adaptive river debris interception and garbage compression and baling device based on flow velocity sensing.

[0058] Figure 2 This is a physical image of an adaptive river debris interception and garbage compression and baling device based on flow velocity sensing.

[0059] Figure 3 This is an architecture diagram of an adaptive river debris interception and packaging method based on flow velocity sensing.

[0060] Figure 4 This is a comparison chart of waste conveying efficiency and energy consumption data at different flow rates in the embodiments of this application;

[0061] Figure 5 This is a dynamic data diagram of the waste compression and packaging control stage in the embodiments of this application;

[0062] Figure 6 This is a comparison chart of performance indicators over a 72-hour operating cycle in the embodiments of this application. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0064] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0065] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0066] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0067] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0068] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0069] Example 1 mainly describes an adaptive river debris interception and garbage compression and baling device based on flow velocity sensing, such as... Figure 1 , Figure 2 As shown, it includes a debris interception mechanical module, a backup electric drive module, a waste compression and baling module, a sensing and detection module, and a main control module;

[0070] The debris-blocking mechanical module includes a worm gear drive unit, a belt conveyor unit, a mechanical frame, and auxiliary accessories. In the worm gear drive unit, the worm is made of carburized and quenched alloy steel, and the worm gear is made of tin bronze. The mechanical frame is made of hot-dip galvanized steel with an epoxy coating. The conveyor belt of the belt conveyor unit is made of neoprene rubber. Auxiliary accessories include iron-capped sealed bearings and non-powered roller slides. The debris-blocking mechanical module uses water flow to impact the blades and drive the worm gear drive, converting the kinetic energy of the water flow into the mechanical energy of the belt conveyor. This guides floating debris in the river through baffles and non-powered roller slides to the belt conveyor unit, and then transports it to the riverbank garbage collection point.

[0071] The backup power drive module includes a three-phase asynchronous motor, a reducer, relays and contactors. The protection level of the three-phase asynchronous motor is not lower than IP65, and the reduction ratio of the reducer is 10:1 to 50:1. It is used to provide power support for the debris-blocking mechanical module when the water flow power is insufficient.

[0072] The waste compression and baling module includes a hydraulic press, a waste collection bin, and an actuator, which is used to receive waste conveyed by the belt conveyor unit and compress and bale the waste that reaches a set volume.

[0073] The sensing and detection module includes a radar flow velocity sensor and an ultrasonic volume sensor. The radar flow velocity sensor outputs a 4-20mA analog signal for real-time acquisition of river flow velocity, while the ultrasonic volume sensor is a switch output type for detecting the height of garbage accumulation inside the garbage collection bin.

[0074] The main control module is electrically connected to the backup electric drive module, the waste compression and packaging module, and the sensing and detection module.

[0075] Furthermore, the main control module uses a Siemens S7-1200 PLC to receive the flow velocity signal from the radar flow velocity sensor. When the water flow velocity is detected to be lower than 1 m / s for 5 seconds, the backup power drive module is started. The three-phase asynchronous motor is driven by relays and contactors, and the worm gear transmission is driven by a reducer to ensure the stable operation of the belt conveyor unit. The main control module receives the garbage accumulation signal from the ultrasonic volume sensor. When the garbage accumulation height is detected to reach the set threshold for 5 seconds, the hydraulic press is started. The garbage is compressed and packaged according to the pre-compression-main compression-holding-reset process. The holding time is 3 seconds. After compression, the hydraulic press runs for 10 seconds and then resets.

[0076] Furthermore, the applicable flow rate range of the device is 0.3~2.5m / s, the optimal working flow rate is 1.0~1.8m / s, the interception rate of floating garbage with a size ≥5cm is ≥90%, the garbage processing capacity is 0.5~3m³ / h, it is suitable for water quality environments with a depth of 2~8m, pH 6~9 and working temperature of -20℃~50℃, and the design life of the main structure is ≥10 years.

[0077] This embodiment describes in detail an adaptive river debris interception and garbage compression and baling device based on flow velocity sensing. It comprises five main modules: debris interception machinery, backup electric drive, garbage compression and baling, sensing and detection, and main control. Operating data is collected through radar flow velocity sensors and ultrasonic volume sensors, and the main control module coordinates with each module to achieve adaptive regulation.

[0078] Example 2, based on Example 1, describes in detail an adaptive river debris interception and packaging method based on flow velocity sensing, such as... Figure 3 As shown, specifically:

[0079] A garbage compression and baling device for intercepting and packing waste in the river channel is installed downstream of the river to monitor the river flow speed and the height of garbage accumulation.

[0080] Based on the river flow velocity, the river debris interception power adaptive switching algorithm is used to mobilize the debris interception mechanical module and the backup electric drive module to stably transport floating debris from the river to the riverbank garbage collection bin.

[0081] Based on the height of the garbage accumulation, the compression and packaging module is activated through an adaptive switching algorithm for the garbage packaging threshold, and the compression and packaging operation is performed according to the process of pre-compression-main compression-holding pressure-reset.

[0082] Upload operating status, flow rate data, and waste accumulation status to the IoT platform, and provide information prompts and remote control based on signal type.

[0083] Furthermore, a river channel debris interception and garbage compression and packaging device is installed downstream of the river channel. Specifically, the garbage interception device and garbage conveying device of the debris interception mechanical module are set perpendicular to the river channel. A radar flow velocity sensor is deployed on the bank or river channel support to collect the water surface flow velocity, and an ultrasonic volume sensor is installed on the top of the riverbank garbage collection bin to detect the garbage accumulation height.

[0084] Furthermore, the adaptive switching algorithm for river debris interception is as follows: when the radar flow velocity sensor detects that the river water flow velocity is in the optimal working range of 1.0~1.8m / s, the water flow impacts the blades of the debris interception mechanical module, driving the worm gear transmission unit to operate, converting the kinetic energy of the water flow into the mechanical energy of the belt conveyor unit. The floating debris in the river is guided to the belt conveyor unit by the baffle and the non-powered roller slide, and then transported by the belt to the riverbank garbage collection bin.

[0085] When the radar flow velocity sensor outputs a 4-20mA analog signal in real time, it is converted into an actual flow velocity value by the analog input module of the Siemens S7-1200 PLC. When the water flow velocity is detected to be lower than 1.0m / s for 5 seconds, the PLC controls the backup power drive module to start. Through the intermediate relay and contactor, the three-phase asynchronous motor drives the worm gear transmission unit through the reducer, ensuring that the belt conveyor unit runs stably at a speed of 0.1~0.5m / s.

[0086] When the water flow velocity exceeds 2.5m / s, the PLC controls the angle of the trash rack to be adjusted to 30°~60° and cuts off the backup power drive (if it is in operation).

[0087] Furthermore, when the water flow velocity is within the optimal operating range ( Specifically, the radar current meter collects the river flow velocity in real time and outputs a 4-20mA analog signal, which is converted into the actual flow velocity value by the analog input module of the Siemens S7-1200 PLC. The formula is:

[0088]

[0089] in, This represents the actual water flow velocity. , These are the lower and upper limits of sensor measurement, respectively. , These are the minimum output current and the maximum output current, respectively. Output current to the sensor;

[0090] Determine whether it is in the optimal working range of 1.0~1.8m / s. When the flow rate meets the requirements, the water flow impacts the blades of the debris-blocking mechanical module, driving the worm gear to rotate. The worm gear, as the active component, drives the worm wheel to rotate.

[0091] The worm gear transmission unit, through gear linkage with the mesh filter conveyor belt, converts rotational kinetic energy into linear motion mechanical energy of the belt, enabling the belt to run stably within a specified speed range;

[0092] Floating debris in the river flows through the device under the action of water flow, and is guided by baffles and non-powered roller slides to the operating belt. The belt overcomes frictional resistance and transports the floating debris to the riverbank garbage collection bin.

[0093] Furthermore, when the water flow velocity is below or above the optimal operating range, specifically: set an anti-vibration delay threshold. Determine the actual water flow velocity Is the flow rate below the lower limit of the optimal operating range? When the flow rate is detected to be below the lower limit, initiate... If the insufficient flow rate condition is continuously met after a prolonged anti-vibration delay, the backup power drive module start command is automatically triggered, and the hydraulic drive priority is cut off. The intermediate relay is controlled to activate, and the contactor is linked to connect the three-phase asynchronous motor power supply. After the motor (0.5~5.5kW, IP65 protection level) starts, the speed is reduced and the torque is increased by the reducer (reduction ratio 10:1~50:1), which drives the worm gear transmission unit (the worm is made of carburized and quenched alloy steel, and the worm wheel is made of tin bronze) to operate.

[0094] The water flow velocity exceeds the upper limit of the optimal working range and continues After a certain period, if the backup power drive module is still running, the PLC immediately outputs a cut-off signal to disconnect the contactor power supply via an intermediate relay, stopping the three-phase asynchronous motor and preventing overload of the transmission system due to power superposition. The PLC sends an angle adjustment command to the hydraulic actuator, dynamically adjusting the working angle of the debris-blocking machinery (initial working angle 45°) according to the flow velocity amplitude. The closer the flow velocity is to the safety threshold (2.5m / s), the larger the angle adjustment amplitude, up to a maximum of 60°, to reduce the impact load of the water flow on the device. The formula is:

[0095]

[0096] in, The adjusted angle of the debris barrier. As the initial working angle, To achieve the optimal workflow rate limit, For the safe flow rate threshold, This represents the maximum angle adjustment amount.

[0097] Furthermore, the rationality of the load after angle adjustment is verified to ensure the structural safety of the device. The formula is:

[0098]

[0099] in, The impact load of water flow on the debris-blocking machinery. For the density of river water, The frontal area of ​​the debris-blocking machinery, The drag coefficient is determined based on the shape of the device.

[0100] Furthermore, the adaptive switching algorithm for garbage packing thresholds specifically involves: setting a preset filling time threshold. and continuous period threshold The system reads the sensor signal from the ultrasonic volume sensor, combines it with historical filling data to calculate the waste filling rate, and dynamically adjusts the volume threshold. If continuous The filling time within each unloading cycle is less than Automatically raise the volume threshold; if the filling time exceeds ,reduce ;

[0101] When the sensor detects that the height of the accumulated garbage has reached the dynamically corrected threshold... And continued During the specified time, the PLC outputs multi-stage compression start instructions to the waste compression and packaging module;

[0102] After the compression process is completed, the PLC detects the reset status of the hydraulic press through the limit switch and triggers an audible and visual alarm to prompt unloading. If the material is not unloaded within the preset unloading period, the secondary compression is automatically started to increase the pressure to the main pressure and extend the storage period.

[0103] Furthermore, the multi-stage compression specifically involves the following: In the pre-compression stage, the hydraulic press piston rod extends at a low speed, and the pressure plate slowly contacts the surface of the waste, applying a preset pre-compression pressure;

[0104] During the main pressing stage, the pressure plate continuously applies pressure. The hydraulic press pressure parameters are determined based on the waste accumulation density and height, using the following formula:

[0105]

[0106]

[0107] in, Main pressure. Pre-compression pressure, For the density of garbage accumulation, It is the acceleration due to gravity. The height of the garbage pile, For safety reasons, This is the preload coefficient;

[0108] During the pressure holding phase, the operating time is determined based on the volume of waste, using the following formula:

[0109]

[0110] in, For the pressure holding time, This represents the actual volume of the waste. This refers to the total capacity of the trash can. This refers to the hydraulic press reset time.

[0111] During the reset phase, the PLC controls the hydraulic system's directional valve to switch, releasing the pressure inside the hydraulic cylinder; the hydraulic press piston rod retracts in the reverse direction, driving the pressure plate back to its initial position.

[0112] Furthermore, during the pre-compression stage, the hydraulic press piston rod extends at a low speed (5mm / s), and the pressure plate slowly contacts the surface of the waste, applying a pre-compression pressure of 0.5kPa to squeeze the internal gaps of the waste (such as the air gaps between plastic bags and branches), thus avoiding uneven compression caused by gaps during the main compression and laying the foundation for the subsequent main compression. When the pressure sensor detects that the pressure is stable at 0.5kPa for 1 second, or the pressure plate displacement reaches the preset stroke (50mm), the pre-compression stage ends and automatically switches to the main compression stage.

[0113] Furthermore, during the main pressure stage, the PLC controls the hydraulic system to increase the pressure to the set main pressure value, and the pressure plate continuously applies pressure to compress the waste volume to 1 / 3 to 1 / 4 of its original volume, ensuring that the waste density meets the requirements for storage and transportation. The hydraulic system has a built-in relief valve that automatically releases pressure when the pressure exceeds the set value by 10% to avoid equipment overload. At the same time, the position of the pressure plate is monitored in real time by a displacement sensor to prevent it from squeezing the collection box body. The main pressure stage ends when the pressure plate reaches the preset compression stroke (determined according to the height of the collection box, usually 200 to 300 mm), or when the pressure sensor detects that the pressure has remained stable for 2 seconds.

[0114] Furthermore, during the pressure holding stage, after the main pressure stage ends, the hydraulic system maintains the main pressure unchanged, ensuring the stability of the compressed waste structure and preventing volume expansion due to elastic rebound after pressure release, thus ensuring that the packaged waste is not easily loosened; the PLC collects pressure sensor data in real time, and if the pressure drops by more than 100Pa during the pressure holding period, it automatically replenishes the pressure to the set value to ensure the pressure holding effect; when the pressure holding time reaches the preset value, the PLC sends a pressure holding end signal and enters the reset stage.

[0115] Furthermore, during the reset phase, the PLC controls the hydraulic system's directional valve to switch, releasing the pressure inside the hydraulic cylinder until it drops below 0.1 kPa. The hydraulic press piston rod retracts in the opposite direction at a speed of 15 mm / s, driving the pressure plate back to its initial position (top of the collection box, without affecting waste conveying). The limit switch detects whether the pressure plate has fully reset. If it has reset, the PLC sends a signal to the system indicating that the compression and baling is complete, triggering an audible and visual alarm to indicate unloading. If it has not reset, a fault warning is issued. After the reset is complete, the compression and baling module enters standby mode, waiting for the next waste accumulation threshold to be triggered, and repeats the above process.

[0116] Furthermore, information prompts and remote control are based on signal type. Specifically, the upload cycle is dynamically adjusted according to data fluctuation amplitude to balance real-time performance and communication power consumption. The formula is:

[0117]

[0118] in, For data upload cycle, Based on the basic upload cycle, Minimum upload interval The data value at the current moment. This is the data value from the previous moment. , These represent the maximum and minimum values ​​of the data.

[0119] The formula for converting sensor analog signals into engineering values ​​that the platform can display is:

[0120]

[0121] in, The converted engineering values, , These are the lower and upper limits of the project value. For sensor output current, , These are the maximum and minimum output currents of the sensor;

[0122] The warning priority is assigned according to the fault type and the urgency of the operating condition, using the following formula:

[0123]

[0124] in, As a priority for early warning, The fault type weights are (equipment downtime fault = 3, sensor fault = 2, parameter over-limit = 1). The fault level is categorized as follows: 1 = minor fault, 2 = serious fault. For deviations from the weight of the operating condition, For parameter warning threshold, For parameter limit threshold, This is the current value of the parameter corresponding to the fault type.

[0125] This embodiment details an adaptive river channel debris interception and garbage compression and baling method based on flow velocity sensing. Through an adaptive switching algorithm for river channel debris interception power, the method activates a backup power drive module or adjusts the device angle according to the water flow velocity to stabilize the speed of the belt conveyor unit for garbage transport. An adaptive switching algorithm for garbage baling threshold dynamically corrects the compression threshold, compressing the garbage according to a pre-compression-main compression-holding-reset process. Simultaneously, data is uploaded to an IoT platform, enabling information prompts and remote control based on signal type.

[0126] Example 3, based on Example 1 or 2, describes in detail the implementation process of using this device and method to compress and package river debris in the downstream section of an urban river, as follows:

[0127] The city's inland river is 8m wide and 2.5m deep, with a daily flow velocity of 0.3-2.5m / s. The daily floating garbage volume is suitable for a garbage processing capacity of 0.5-3m³ / h. The device proposed in this application is deployed 5m downstream of the riverbank. The interception device and belt conveyor of the debris interception module are set perpendicular to the river. The belt conveyor is 6m long and tilted at a 15° angle. The radar flow velocity sensor (outputting a 4-20mA analog signal) is installed on the river support, 0.8m above the water surface. The ultrasonic volume sensor is installed on the top of the garbage collection bin on the riverbank, 1.5m from the bottom of the bin. The garbage collection bin has a volume of 0.8m³. The three-phase asynchronous motor has a power of 2.2kW, the reducer has a reduction ratio of 30:1, and the hydraulic press has a rated pressure of 10kPa. The main control module uses a Siemens S7-1200 PLC, the worm gear transmission unit has a module of m=1.6, and the center distance is 38mm.

[0128] 24-hour continuous monitoring, with a data acquisition interval of 10 seconds, shows a daily flow rate fluctuation range of 0.3-2.4 m / s. The monitoring error for garbage accumulation height is less than ±2 cm, and the flow rate monitoring error is less than ±0.05 m / s. The radar flow rate sensor outputs 4 mA when the flow rate is 0 and 20 mA at full scale (5 m / s). After PLC conversion, the engineering value error is less than ±0.05 m / s. A preset anti-shake delay threshold is included. The optimal operating flow rate range is 1.0-1.8 m / s, and the safe flow rate threshold is... .

[0129] During operation, taking the measured average flow velocity of 1.4 m / s as an example, the flow velocity is in the optimal range (1.0-1.8 m / s), and hydraulic drive is used. The water flow impacts the blades and drives the worm gear transmission. The measured belt conveyor speed is 0.3 m / s. The waste conveying efficiency is 25 kg / h, there is no waste accumulation, the energy consumption is 0, and the interception rate of floating waste larger than 5 cm is 95%.

[0130] When the flow rate is below the optimal range, taking a flow rate of 0.7 m / s at a certain moment as an example, the PLC controls the backup power drive module to start, and through the intermediate relay contactor, the three-phase asynchronous motor (2.2 kW, IP65) starts at a speed of 1480 r / min. After passing through the reducer (30:1), the output speed is 49.3 r / min, driving the worm gear transmission and belt conveyor. The actual measured belt conveyor speed is stable at 0.28 m / s, the waste conveying efficiency is 22 kg / h, the motor energy consumption is 1.8 kW·h / 8h, and the equipment operates stably without jamming.

[0131] When the flow velocity exceeds the optimal range, taking a flow velocity of 2.2 m / s at a certain moment as an example, the initial working angle... Maximum angle adjustment amount Adjusted the angle of the debris barrier This reduces the impact load of water flow; actual measurements show that without power superposition, the load on the transmission system is reduced by 25%, the interception efficiency is increased by 18%, the interception rate is maintained above 92%, there is no garbage overflow, and the mechanical frame meets the impact resistance standards.

[0132] The operating data under various working conditions were statistically analyzed, and the average operating data under different flow rates are shown in Table 1 below:

[0133] Table 1 Operating data under different working conditions

[0134] Monitoring parameters Optimal flow velocity range (1.0-1.8 m / s) Below the optimal flow rate range (<1.0 m / s) Exceeding the optimal flow velocity range (>1.8 m / s) driving method Hydraulic drive Backup power drive Hydraulic drive Belt transmission speed 0.29m / s 0.27m / s 0.31m / s Waste transport efficiency 24.8 kg / h 21.5 kg / h 27.6 kg / h Energy consumption 0kW·h 1.75kW·h / 8h 0kW·h Interception rate 95.7% 93.5% 92.8%

[0135] According to Table 1 and Figure 4 As shown in the comparison chart of waste conveying efficiency and energy consumption data under different flow rates, under different flow rates, this method adapts to the motor power and device angle, achieving stable maintenance of waste conveying efficiency and optimization of motor energy consumption under non-low flow rate conditions.

[0136] After intercepting the waste, the waste is compressed and packaged, and a preset filling time threshold is set. Continuous period threshold Preload coefficient Pre-compression pressure = The filling times for the first three unloading cycles were 3.8h, 3.7h, and 3.9h, respectively, all less than [a certain value]. The volume threshold is dynamically increased, corresponding to a waste accumulation height that is adjusted from 0.7m to 0.8m.

[0137] During the compression and baling process, the hydraulic press piston rod extends at a speed of 5 mm / s during the pre-compression stage, and the pre-compression ends after the pressure plate displacement reaches 50 mm, taking 10 seconds; the main compression stage involves increasing the waste bulk density. Stacking height 0.8m, safety factor 2.8, main pressure The compression process ends after the pressure plate reaches the preset compression stroke of 250mm, taking 35 seconds; the hydraulic system has a built-in relief valve that automatically releases pressure when the pressure exceeds the set value by 10%;

[0138] The pressure holding stage is set with a reset time of 10 seconds, and the actual volume of the waste is [not specified]. The pressure holding time is 3 seconds. If the pressure drop exceeds 0.2 kPa during the pressure holding period, the pressure will be automatically replenished, and the pressure fluctuation will be less than ±0.1 kPa.

[0139] The reset phase takes 15 seconds, during which the hydraulic press piston rod retracts in the opposite direction at a speed of 15 mm / s, and the limit switch detection reset accuracy is 100%. After the unloading timeout (preset 8 hours), the secondary compression is automatically started, the pressure is increased to 3.8 kPa, and the waste storage cycle is extended by 3 hours.

[0140] Data from the waste compression and packaging control phase was collected to obtain, for example... Figure 5 The diagram shows the dynamic data of the waste compression and packaging control stage. According to the diagram, the waste volume after compression is 0.4m³, the compression ratio is 4:1, and the waste storage capacity of a single container is increased from 36kg to 144kg, which greatly reduces the operation and maintenance costs.

[0141] Preset basic upload cycle for IoT interaction and remote control phase Minimum upload cycle Maximum flow rate data minimum value ;

[0142] When the measured flow rate fluctuation is small, such as under the condition of 1.4m / s → 1.45m / s, the upload cycle is: When the flow rate fluctuates significantly, such as from 0.7 m / s to 1.1 m / s, the upload cycle... ;

[0143] After running continuously for 72 hours, a warning was issued once, with the fault type weighting as follows. (Sensor fault weight 2), operating condition deviation weight Fault level 2 (minor fault, slight sensor interference), flow rate deviates from threshold. Parameter limit difference Early warning priority (Priority Level 2, pop-up notification); Through the communication function of Siemens S7-1200 PLC, the optimal flow rate range was remotely adjusted to 0.9-1.9 m / s. After actual measurement and adjustment, the flow rate deviation and sensor malfunction were eliminated.

[0144] The collected operational data yielded the performance metrics for the 72-hour operational cycle, as shown in Table 2 below:

[0145] Table 2 Performance Indicators During the Operating Cycle

[0146] Performance Indicator Name Preset threshold 72-hour measured value Percentage of stable operating time of equipment ≥98% 99.2% Waste interception rate ≥90% 96.8% Compression and packaging efficiency ≥95% 97.8% Waste disposal volume ≥1.5m³ / h 1.8m³ / h Noise Level ≤60dB ≤58dB Energy consumption ≤5.8kW·h / 24h 5.4 kWh / 24h

[0147] According to Table 2 and Figure 6 As shown in the performance index comparison chart over the 72-hour operating cycle, the equipment operated with this method achieved a stability of 99.2%, a waste interception rate of 96.8%, a compression and baling efficiency of 97.8%, a stable processing capacity of 1.8 m³ / h, and a noise level of less than 58 dB. It is adaptable to different flow rates and waste production fluctuations in this river section, and the main structure operates stably, fully meeting the requirements for adaptive control.

[0148] This embodiment details the implementation process of compressing and packaging river debris using the device and method in the downstream section of an urban river. The results verify that the device and method can dynamically adjust the backup electric drive and device angle to achieve stable operation under multiple flow rate conditions. At the same time, the stacking height can be dynamically adjusted according to the filling time. The pressure of the pre-compression-main pressure-holding-reset process is stable and the compression is controllable, which significantly improves space utilization and reduces operation and maintenance costs, proving the feasibility, stability and economy of the device and method.

[0149] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter changes made to these embodiments within the spirit and principles of the present invention, without departing from the principles and spirit of the present invention, through conventional substitutions or to achieve the same function, fall within the scope of protection of the present invention.

Claims

1. An adaptive river debris interception and garbage compression and baling device based on flow velocity sensing, characterized in that, It includes a debris interception mechanical module, a backup electric drive module, a waste compression and baling module, a sensing and detection module, and a main control module; The debris-blocking mechanical module includes a worm gear transmission unit, a belt conveyor unit, a mechanical frame, and auxiliary accessories. The worm gear transmission unit is driven by the impact of water flow on the blades, which converts the kinetic energy of the water flow into the mechanical energy of the belt conveyor, so that the floating debris in the river is guided to the belt conveyor unit through the baffle and the non-powered roller slide. The backup power drive module provides power support to the debris-blocking mechanical module when the water flow power is insufficient, and includes a three-phase asynchronous motor, a reducer, a relay, and a contactor; The waste compression and baling module receives waste conveyed by the belt conveyor unit and compresses and bales waste that has reached a set volume, including a hydraulic press, a waste collection bin, and an actuator. The sensing and detection module includes a radar flow velocity sensor and an ultrasonic volume sensor, which respectively collect the river flow velocity and the height of garbage accumulation in the garbage collection bin. The main control module is electrically connected to the backup electric drive module, the waste compression and packaging module, and the sensing and detection module.

2. The adaptive river debris interception and garbage compression and baling device based on flow velocity sensing according to claim 1, characterized in that, The main control module receives the flow velocity signal from the radar flow velocity sensor. When it detects that the water flow velocity is lower than the preset flow velocity threshold for 5 seconds, it controls the backup power drive module to start. The three-phase asynchronous motor is driven by a relay and contactor, and the worm gear transmission is driven by a reducer to ensure the stable operation of the belt conveyor unit. The main control module also receives the garbage accumulation signal from the ultrasonic volume sensor. When it detects that the garbage accumulation height reaches the set threshold for 5 seconds, it controls the hydraulic press to start. The hydraulic press completes the garbage compression and packaging process according to the pre-compression-main compression-holding pressure-reset process. The holding pressure time is 3 seconds. After compression, the hydraulic press runs for 10 seconds and then resets.

3. An adaptive river debris interception and packaging method based on flow velocity sensing, used to achieve adaptive control of river debris interception and packaging through the dedicated system described in claims 1-2, characterized in that, Specifically: A garbage compression and baling device for intercepting and packing waste in the river channel is installed downstream of the river to monitor the river flow speed and the height of garbage accumulation. Based on the river flow velocity, the river debris interception power adaptive switching algorithm is used to mobilize the debris interception mechanical module and the backup electric drive module to stably transport floating debris from the river to the riverbank garbage collection bin. Based on the height of the garbage accumulation, the compression and packaging module is activated through an adaptive switching algorithm for the garbage packaging threshold, and the compression and packaging operation is performed according to the process of pre-compression-main compression-holding pressure-reset. Upload operating status, flow rate data, and waste accumulation status to the IoT platform, and provide information prompts and remote control based on signal type.

4. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 3, characterized in that, The installation of the river channel debris interception and garbage compression and packaging device in the downstream of the river channel specifically involves: setting the garbage interception device and garbage conveying device of the debris interception mechanical module perpendicular to the river channel; deploying a radar flow velocity sensor on the bank or river channel support to collect the water surface flow velocity; and installing an ultrasonic volume sensor on the top of the riverbank garbage collection bin to detect the garbage accumulation height.

5. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 3, characterized in that, The adaptive switching algorithm for river debris interception power is as follows: when the river flow velocity is detected to be in the optimal working range, the kinetic energy of the water flow is converted into the mechanical energy of the belt conveyor unit through the debris interception mechanical module, and the floating debris in the river is transported to the riverbank garbage collection bin. When the river flow velocity is detected to be lower than the optimal operating range, the backup electric drive module ensures the stable operation of the belt conveyor unit. When the water flow rate exceeds the optimal operating range, adjust the debris-blocking mechanical module and disconnect the backup power drive.

6. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 5, characterized in that, When the water flow velocity is in the optimal operating range, specifically, the analog signal output by the radar flow meter is converted into the actual water flow velocity. When the flow rate meets the requirements, the water flow impacts the blades of the debris-blocking mechanical module, causing the worm to rotate. The worm acts as the driving component, driving the worm wheel to rotate. The worm gear transmission unit, through gear linkage with the mesh filter conveyor belt, converts rotational kinetic energy into linear motion mechanical energy of the belt, enabling the belt to run stably within a specified speed range; Floating debris in the river flows through the device under the action of water flow, and is guided by baffles and non-powered roller slides to the operating belt. The belt overcomes frictional resistance and transports the floating debris to the riverbank garbage collection bin.

7. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 5, characterized in that, When the water flow velocity is below or above the optimal operating range, specifically: setting an anti-vibration delay threshold. Determine the actual water flow velocity Is the flow rate below the lower limit of the optimal operating range? When the flow rate is detected to be below the lower limit, initiate... If the insufficient flow rate condition is continuously met after a prolonged anti-vibration delay, the backup power drive module start command is automatically triggered, and the hydraulic drive priority is cut off. The intermediate relay is controlled to activate, and the contactor is linked to connect the three-phase asynchronous motor power supply. After the motor (0.5~5.5kW, IP65 protection level) starts, the speed is reduced and the torque is increased by the reducer (reduction ratio 10:1~50:1), which drives the worm gear transmission unit (the worm is made of carburized and quenched alloy steel, and the worm wheel is made of tin bronze) to operate. The water flow velocity exceeds the upper limit of the optimal working range and continues After a certain period, if the backup power drive module is running, the PLC immediately outputs a cut-off signal to disconnect the contactor power supply via an intermediate relay, stopping the three-phase asynchronous motor and preventing overload of the transmission system due to power superposition. The PLC then sends an angle adjustment command to the hydraulic actuator, dynamically adjusting the operating angle of the debris-blocking machinery according to the excess flow rate. The closer the flow rate is to the safety threshold, the larger the angle adjustment range. The formula is as follows: in, The adjusted angle of the debris barrier. As the initial working angle, To achieve the optimal workflow rate limit, For the safe flow rate threshold, This represents the maximum angle adjustment amount.

8. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 3, characterized in that, The adaptive switching algorithm for the waste packaging threshold specifically involves: setting a preset filling time threshold. and continuous period threshold The system reads the sensor signal from the ultrasonic volume sensor, combines it with historical filling data to calculate the waste filling rate, and dynamically adjusts the volume threshold. If continuous The filling time within each unloading cycle is less than Automatically raise the volume threshold; if the filling time exceeds ,reduce ; When the sensor detects that the height of the accumulated garbage has reached the dynamically corrected threshold... And continued During the specified time, the PLC outputs multi-stage compression start instructions to the waste compression and packaging module; After the compression process is completed, the PLC detects the reset status of the hydraulic press through the limit switch and triggers an audible and visual alarm to prompt unloading; If the material is not unloaded within the preset unloading period, the secondary compression will be automatically started to increase the pressure to the main pressure and extend the storage period.

9. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 8, characterized in that, The multi-stage compression specifically involves the following: In the pre-compression stage, the hydraulic press piston rod extends at a low speed, and the pressure plate slowly contacts the surface of the waste to apply a preset pre-compression pressure. During the main pressing stage, the pressure plate continuously applies pressure. The hydraulic press pressure parameters are determined based on the waste accumulation density and height, using the following formula: in, Main pressure. Pre-compression pressure, For the density of garbage accumulation, It is the acceleration due to gravity. The height of the garbage pile, For safety reasons, This is the preload coefficient; During the pressure holding phase, the operating time is determined based on the volume of waste, using the following formula: in, For the pressure holding time, This represents the actual volume of the waste. This refers to the total capacity of the trash can. This refers to the hydraulic press reset time. During the reset phase, the PLC controls the hydraulic system's directional valve to switch, releasing the pressure inside the hydraulic cylinder; the hydraulic press piston rod retracts in the reverse direction, driving the pressure plate back to its initial position.

10. The adaptive river debris interception and packaging method based on flow velocity sensing according to claim 3, characterized in that, The information prompting and remote control based on signal type specifically involves: dynamically adjusting the upload cycle according to data fluctuation amplitude to balance real-time performance and communication power consumption, as shown in the formula: in, For data upload cycle, Based on the basic upload cycle, Minimum upload interval The data value at the current moment. The data value from the previous moment. , These represent the maximum and minimum values ​​of the data. The sensor analog signals are converted into engineering values ​​that can be displayed on the platform, and early warning priorities are assigned according to the fault type and the urgency of the operating condition. The formula is as follows: in, As a priority for early warning, For fault type weights, Fault level, For deviations from the weight of the operating condition, For parameter warning threshold, For parameter limit threshold, This is the current value of the parameter corresponding to the fault type.

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