755 results about "Rollover" patented technology

The invention relates to the technical field of forklift driving stability control, in particular to a forklift driving stability control system based on ultrasonic and laser composite ranging, which comprises a composite ranging module, a multi-modal data fusion module, a stability prediction and control module, an execution mechanism control module and an online learning system. The composite distance measuring module collects surrounding environment information and corrects motion errors through a dynamic compensation algorithm; the multi-modal data fusion module dynamically adjusts the weight of the sensor based on an environmental interference factor, and realizes space-time calibration in combination with extended Kalman filtering; the stability prediction and control module is fused with the vehicle dynamic characteristics to predict the rollover risk and generate a hierarchical control instruction; the actuating mechanism control module drives actuating components such as an active suspension and an electronic differential mechanism through a layered framework. The method can adapt to complex working conditions, the prediction precision and fault-tolerant capability are improved, safety and efficiency are balanced, the maintenance cost is reduced, and the method is suitable for various forklifts.

The invention discloses a rollover risk prediction method for an operation machine, and the method comprises the steps: determining target attitude information corresponding to the operation machine and a target rotation angle of the operation machine around a first rollover line under the condition that the operation machine is in a bucket supporting condition, the target posture information is used for representing the supporting posture of the operation machine under the bucket supporting working condition, and the first tip-over line is a connecting line between supporting points of the operation machine under the bucket supporting working condition; determining a target stability parameter corresponding to the operation machine based on the target attitude information, the target rotation angle and a preset mapping relation; the mapping relation is used for representing the relation among the rotation angle, the attitude information and the stability parameter of the operation machine; and determining the tipping risk of the operation machine according to the stability parameter. According to the invention, the tipping risk of the operation machine can be accurately determined.

The invention discloses a vehicle driving risk prediction method and device in an off-road environment based on a large model, and relates to the technical field of off-road risk prediction, and the method comprises the steps: obtaining current vehicle state data and current environment perception data; determining a target multi-axis rollover risk index based on the current vehicle state data; determining a target lateral instability index based on the current vehicle state data and the current environment perception data; fusing the target multi-axis rollover risk index and the target lateral instability index to generate target risk level data; based on the current vehicle state data, the current environment perception data and the target risk level data, generating a target operation recommendation sequence through a large cross-country decision model; and outputting risk early warning information based on the target operation recommendation sequence.

The invention discloses an axle staged cooling system, an axle staged cooling assembly and an engineering vehicle. The axle staged cooling system comprises an engine first-stage cooling system, an engine second-stage cooling system, an axle first-stage cooling system and an axle second-stage cooling system. Each stage of cooling system controls cooling water and oil path trend through a thermolator in each loop, controls axle cooling oil and engine cooling water to exchange heat, and meets different cooling requirements of an axle. The temperature sensor in each loop outputs water and oil temperature signals to a motor of the cooling fan, so that the rotating speed of the fan is increased to different degrees along with the temperature rise of each cooling system, and different cooling powers are matched. According to the grading system, the engine and the axles can work at the proper temperature at the same time, the two heat exchangers cool cooling oil of the front axle, cooling oil of the middle axle and cooling oil of the rear axle respectively, the cooling capacity of the front axle is improved, the braking effectiveness of the front axle is guaranteed, and rollover caused by serious backward movement of the gravity center of a vehicle during emergency braking is prevented.

The invention provides a semi-trailer rollover early warning method and system based on dynamic threshold value prediction. The early warning method comprises the steps that the transverse acceleration, the yaw velocity, the vehicle speed, the suspension pressure and the front lane curvature of a semi-trailer are obtained in real time; according to the collected and calculated data and a linear trend extrapolation method, constructing a dynamic rollover risk threshold function and a comprehensive risk index function, and calculating a rollover risk threshold, a real-time risk value and a predicted risk value; the item with the higher value in the real-time risk value and the predicted risk value is selected and compared with a rollover risk threshold value, and whether early warning is triggered or not is judged, and a control instruction is issued; the early warning system comprises a semitrailer state monitoring unit, a lane curvature recognition unit, a rollover risk threshold calculation unit, a real-time risk value calculation unit, a predicted risk value calculation unit and an early warning control unit, and is used for realizing the early warning method, so that the response speed and the judgment accuracy of the semitrailer rollover early warning system under variable working conditions are improved.

The invention discloses a rollover risk pre-judgment and speed closed-loop control system and method integrating an IMU and an encoder, and relates to the technical field of vehicle active safety control. The system comprises an inertial measurement unit, an encoder, a controller, an execution mechanism and an alarm, the inertial measurement unit provides vehicle attitude data, and the encoder provides vehicle speed information. And the controller fuses the data in real time to calculate a vehicle rollover risk index, and sets a double-threshold criterion: when the risk is close to a threshold, an early warning is given, and when the risk exceeds the threshold, a deceleration control instruction is sent to the execution mechanism. The executing mechanism adjusts vehicle power output or braking accordingly, and automatic speed reduction is achieved. The controller forms a closed-loop control loop through feedback of the encoder, the speed reduction force is dynamically adjusted, and the speed of the vehicle is stably reduced to a safe range. Through the method, the rollover risk of the vehicle can be sensed in advance and actively intervened, rollover accidents are avoided, and the rollover-resistant safety of the vehicle is remarkably improved.

The invention discloses a hazardous chemical substance transportation early warning system based on a fuzzy neural network, and relates to the technical field of traffic transportation and road safety monitoring. According to the hazardous chemical substance transportation early warning system based on the fuzzy neural network, road geometric influence in original data of a sensor is accurately stripped from dynamic response of a vehicle; according to the method, false risk signals caused by road design can be eliminated, the method focuses on instability risks really caused by dynamic factors such as vehicle control and load transfer, and the rollover risk can be judged more essentially and more accurately; converting the preprocessed characteristic quantity into a fuzzy linguistic variable, reasoning by simulating a fuzzy rule of human expert experience, and finally outputting continuous risk indexes and levels; the processing mode not only better conforms to the imprecise characteristic of risk assessment, but also enhances the adaptability and robustness of the system to different vehicle types, loads and road conditions.

The utility model discloses an unmanned ship rollover prevention device which comprises two rollover prevention assemblies of the same structure, the two rollover prevention assemblies are symmetrically and fixedly installed on the two side portions of a ship body, each rollover prevention assembly comprises an installation base, an extension module and a driving module, the installation bases are fixedly installed on the side portions of the ship body, and the extension modules are fixedly installed on the side portions of the ship body. A mounting groove is formed in the mounting base, one end of the extension module is fixedly mounted in the mounting base, the extension module is located in the mounting groove, and the driving module is mounted in the ship body and connected with the extension module; according to the anti-rollover device for the unmanned ship, the anti-rollover assemblies are arranged on the two sides of the ship body correspondingly, when the anti-rollover assemblies are unfolded, the buoyancy of the ship body can be effectively enhanced, meanwhile, the base contact area of the ship body and the water surface is enlarged, the overall supporting area of the ship body is enlarged, and the wind wave resistance is improved; the situation that the ship body rolls over due to overlarge storm waves is effectively reduced, then the safety of the ship body is effectively guaranteed, and the possibility that the ship body is damaged is reduced.

The invention discloses a robot orchard cross slope rollover prevention method based on space-time prediction enhanced control, and aims to solve the problem of inaccurate centroid time-varying estimation caused by load and mechanical arm actions. According to the method, a vehicle-arm-load space-time diagram and a terrain contact diagram are constructed through multi-source sensing, gravity center distribution containing heavy tail uncertainty is estimated through risk gating attention cross coupling and a space-time diagram network, physical constraint projection and residual error correction are implemented, a rolling angle and a rolling stability margin are predicted through an action condition Transform, and the rolling angle and the rolling stability margin are predicted. Conditional risk value risk indexes are embedded into a sampling type model for predictive control and are constrained by a control obstacle function, so that the technical effects of reducing the rollover risk and improving the gravity center estimation credibility and the operation safety under a cross slope and a soft soil form are achieved.

The application relates to the field of automobile safety technology and provides a vehicle detection dynamic rollover early warning method, a system and electronic equipment, which comprises the following steps: based on a target vehicle, receiving multi-source data of a real-time monitoring unit integrated with an accelerometer and a gyroscope, setting a complementary filtering framework, combining vehicle posture information and EKF principles to establish a dynamic model; predicting the vehicle posture and calculating dynamic parameters, comparing the dynamic parameters with preset threshold values, judging whether a rollover early warning signal is triggered or not, solving the technical problem that the accuracy of rollover early warning is insufficient under the influence of various interference factors in a complex and constantly changing driving environment, setting the complementary filtering framework, effectively filtering out noise, improving the accuracy of vehicle posture estimation by using the EKF principle, simultaneously, deeply analyzing the multidimensional correlation among the vehicle posture, road conditions and dynamic running parameters, quickly judging the rollover risk and triggering the early warning signal, and reducing the probability of rollover accidents.

The invention discloses a vehicle rolling critical condition prediction method and device. The method comprises the following steps: acquiring n groups of rolling data about vehicle rolling; based on the n groups of vehicle rollover parameters, performing new data synthesis processing to obtain m groups of enhanced rollover parameters corresponding to the vehicle rollover parameters; inputting the enhanced tumbling parameter into the implicit neural network, and outputting a tumbling result corresponding to the enhanced tumbling parameter; training the initial explicit neural network through the enhanced tumbling parameter and a tumbling result corresponding to the enhanced tumbling parameter to obtain a trained explicit neural network; and determining a critical condition for triggering the rolling of the target vehicle through the explicit neural network according to the input actual rolling parameter of the target vehicle. In this way, the implicit neural network is used to learn the rolling discrimination capability from the small-scale real vehicle rolling data; and then a large number of reasonable enhanced rolling parameters are generated to train an explicit neural network so as to output critical conditions of vehicle rolling expressed in a specific parameter threshold form.

The invention discloses a commercial vehicle longitudinal and transverse cooperative anti-yaw stability control system and method, and aims to solve the problem that a traditional vehicle stability control system is lagged in response and cannot actively prevent the risk of instability. The method comprises the following steps: firstly, constructing a self-adaptive digital twinborn model which can be synchronized with a physical vehicle in real time through an online parameter identification technology; then, forward simulation is carried out based on the high-fidelity model, and the future state trajectory of the vehicle is converted into a quantified stability risk potential field containing multi-dimensional information such as yawing, rollover and hinge folding; the core of the method is that by analyzing the gradient of the risk potential field in the state space, the instability risk mode playing a leading role at present is accurately and dynamically identified. According to the method, fundamental transformation from passive response to active prevention is achieved, and the driving safety and stability of the commercial vehicle under the limiting working condition are remarkably improved through accurate prediction and risk classification.

The invention discloses a vehicle rollover risk assessment method, a vehicle rollover control method and a vehicle rollover risk assessment system, and relates to the technical field of vehicle active safety. The evaluation method comprises the following steps: acquiring an acquisition value of a first parameter of a vehicle in a first time step; inputting the collection value of the first parameter into a prediction model to obtain a prediction value of a second parameter under a second time step; according to the predicted value of the second parameter, constructing a risk measurement index based on a differential energy Lyapunov index; and evaluating the rollover risk of the vehicle according to the value and the change trend of the risk measurement index. According to the technical scheme, the vehicle rollover problem is abstracted into a stability problem of a dynamic system, a provable theoretical basis is provided for risk assessment and control, higher generalization ability and robustness are achieved, and the control accuracy and the adaptability to complex working conditions are remarkably improved.

The invention discloses a trajectory tracking control method and device, electronic equipment, a storage medium and a vehicle, and relates to the field of automatic driving. Performing attitude risk prediction according to the multi-modal sensing information; performing dynamic weight decision according to attitude risk prediction; and performing three-dimensional cooperative control of vehicle trajectory tracking according to the dynamic weight decision. According to the scheme, dynamic deduction is carried out fully based on the current vehicle attitude, the road adhesion coefficient and the suspension state, the attitude evolution process and response characteristics of the vehicle in the driving process along the planned track are simulated, and key prediction indexes including the rollover risk index, the pitching impact acceleration and the tire instability probability are generated; by implementing a multi-mode adaptive strategy, the trajectory tracking capability of the vehicle in various states is enhanced.

The invention provides a dynamic braking element arrangement and control device for preventing a cruise vehicle from rolling, and relates to the technical field of vehicle braking control systems. The problems that in the prior art, when the complex overturning risk of a high-gravity-center vehicle is dealt with, risk sources cannot be distinguished, and control strategy switching is rigid are comprehensively solved. According to the method, the identification precision and response speed of the control system to overturning risks of different sources are improved, and the smoothness and precision of the control process are improved on the premise of ensuring the limit safety, so that the overall robustness and adaptability of the system in a complex and dynamic change scene are enhanced.

The invention relates to a curve rollover prevention monitoring method and system, and the method comprises the steps: enabling a vehicle-mounted terminal to collect the load distribution information and driving parameters of a vehicle, and uploading the information and parameters to a cloud server; the cloud server receives front road information provided by the road side unit; the cloud server calculates a rollover risk value of the vehicle on the front curve based on the load distribution information, the driving parameters and the road information; the cloud server determines a response strategy according to the rollover risk value and transmits the response strategy to the vehicle-mounted terminal; the vehicle-mounted terminal executes a response strategy before the vehicle arrives at the curve, and the response strategy at least comprises risk warning and / or vehicle speed control. Through cooperation of the vehicle-mounted terminal and the cloud server, the rollover risk can be accurately evaluated before the vehicle enters the curve, a risk alarm is given in advance, and / or the vehicle speed is directly and automatically controlled, so that enough response time is provided for a driver, and the possibility of rollover accidents is greatly reduced.

Disclosed herein is a hoist tool including a hoist frame and a base structure. The hoist frame includes a structural framework having a first end and a second end and at least one first rotation-enabling coupling at the second end of the structural framework. The base structure includes at least one second rotation-enabling coupling configured to engage with the at least one first rotation-enabling coupling of the hoist frame. The at least one second rotation-enabling coupling of the base structure defines a rolling axis. The hoist frame is selectively movable by the hoist to position the at least one first rotation-enabling coupling into engagement with the at least one second rotation-enabling coupling and when coupled and when the assembled structure is coupled to the hoist frame, the hoist frame is selectively rotatable about the rolling axis, relative to the base structure, to enable a rollover of the assembled structure.

The invention discloses an engineering vehicle rollover detection method and device based on a BMS (Battery Management System), and the method comprises the steps: obtaining the attitude data of an engineering vehicle through sensing equipment, and calculating the attitude parameters of the engineering vehicle in the current state according to the attitude data and a preset algorithm, judging whether the attitude parameters are within a preset early warning attitude parameter range or not, when it is judged that the attitude parameters are within the preset early warning attitude parameter range, determining the risk level corresponding to the rollover risk existing in the engineering vehicle according to the early warning attitude parameter range, and controlling the rollover risk of the engineering vehicle on the basis of control parameters of a BMS system of the engineering vehicle. And executing protection control operation matched with the risk level on the engineering vehicle. Therefore, the probability of rollover of the working vehicle can be effectively reduced, so that the probability of accidents during operation of the engineering vehicle is reduced, and the use safety of the engineering vehicle is improved.

The invention discloses a truck gravity center deviation early warning method, which has the main design conception that on the premise of not increasing the cost of the whole truck, grades corresponding to different degrees of gravity center deviation are divided by calculating a left and right tire pressure difference value or a left and right tire temperature difference value by utilizing an existing original truck tire state detection device, so that the truck gravity center deviation early warning method is realized. Specifically, the early warning can be divided into a normal state, first-level early warning and second-level early warning, the first-level early warning can remind a driver of focusing attention through low-level warning measures, and the second-level early warning can remind the driver of the risk of rollover and the need of deceleration and parking as soon as possible through a high-level warning mode. Through difference monitoring of tires on the two sides and a grading early warning mechanism, the probability of occurrence of truck rollover accidents is effectively reduced. The truck center-of-gravity shift early-warning system can effectively warn truck center-of-gravity shift in a low-cost manner, so that the driving safety of the truck is ensured.

The utility model relates to the technical field of walking mechanical equipment, and particularly discloses a cab turnover assembly and engineering mechanical equipment, when the engineering mechanical equipment provided with the cab turnover assembly is overhauled, a locking assembly is switched to a separation state, at the moment, a cab can be driven to rotate around a pivot shaft relative to a frame, and the cab is turned over. When the included angle between the cab and the frame is the first preset included angle, the fixing piece fixes the included angle between the cab and the frame to be the first preset included angle, and at the moment, a worker can overhaul equipment below the cab. The included angle between the cab and the frame is fixed to be the first preset included angle through the fixing piece, the cab is prevented from being excessively turned over or moving in the unexpected direction, and then the safety and stability of engineering mechanical equipment are improved.

The utility model relates to the technical field of truck covering, and provides a side-turning automatic tarpaulin machine which comprises a carriage. The winding drum is fixedly connected to the upper end of one side of the carriage, and one side of the front face of the winding drum is fixedly connected with a controller; the output end of the fixed servo motor extends into the winding drum and is fixedly connected with a winding roller through a coupler, and the surface of the winding roller is wound with a tarpaulin body. The driving rods are symmetrically and rotationally connected to the two ends of the carriage; the fixing frame fixedly connected to the upper end of the front face of the compartment enables the sweeping brush plate to be tightly attached to the surface of the tarpaulin body through the arranged fixing springs, sundries on the surface of the tarpaulin body can be swept away when the tarpaulin body is rolled, the situation that the sundries are accumulated on the rolled tarpaulin body, and consequently the tarpaulin body is damaged is avoided, and the service life of the tarpaulin body is prolonged. And the rolled tarpaulin body is located in the rolling cylinder, so that the rolled tarpaulin body is prevented from being exposed outside for a long time to be scratched and damaged by the outside, and the service life of the tarpaulin body is prolonged.

A method for controlling the actuation of an actuable restraint in response to a vehicle rollover event includes detecting whether the vehicle (12) is engaged in off-road driving. The method further includes determining whether the vehicle (12) is experiencing a rollover event (99), which, if the vehicle is engaged in on-road driving, would guarantee the actuation of the actuable restraint (20). The method further includes actuating the actuable restraint (20) in response to determining that a roll acceleration (D RATE) of the vehicle (20) indicates that the roll event is continuing. A vehicle safety system (10) includes an actuable restraint and a controller (50) configured to control the actuation of the actuable restraint according to the method.

The utility model belongs to the technical field of transport vehicle unloading, and discloses an electrolyte mixing transport vehicle unloading device which comprises a hydraulic overturning vehicle frame, a supporting plate is rotationally connected into the hydraulic overturning vehicle frame, fixing seats are symmetrically and fixedly installed at the top end of the supporting plate, a sliding rail is fixedly installed at the bottom end of the supporting plate, and the sliding rail is fixedly connected with the hydraulic overturning vehicle frame. A first sliding block is slidably mounted in the sliding rail, a motor is fixedly mounted at the bottom end of the sliding rail, an output shaft of the motor is fixedly connected with a lead screw, a base is fixedly connected to the bottom end of the first sliding block, a lantern ring is rotatably connected into the base, and a steel wire rope is fixedly connected to the outer surface of the lantern ring. Through the balancing weight arranged below the supporting plate, the balancing weight slides upwards in an inclined mode along the sliding rail in the synchronous inclined unloading process of the transport vehicle and the supporting plate, and therefore stability in the unloading process can be effectively guaranteed, and equipment rollover caused by center-of-gravity shift is avoided.

1. The name of the design product: power unit for battery replacement locking mechanism (G500). 2. The use of the design product: power unit for battery replacement locking mechanism of automobile cab, used for rollover drive of cab. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the field of adjustable examination couch, in particular to an adjustable examination couch for obstetrics and gynecology department, which comprises a supporting anti-skidding bottom frame, an adjusting ring frame, a limiting adjusting ring block, a rotating ring rod, an H-shaped adjusting plate and an examination couch body. A limiting adjusting ring block is fixedly installed in the middle of the top end of the adjusting workbench, rotating ring rods are rotationally connected to the outer sides of limiting fixing rods, an H-shaped adjusting plate is fixedly connected between the two rotating ring rods, and an examination bed body is fixedly welded to the top end of the H-shaped adjusting plate. A stable counterweight plate increases the weight of a chassis of the device and avoids rollover of the device, a limiting rotating block rotates in an adjusting ring frame in a limiting mode, the purpose of adjusting the rotating angle of a bed body is achieved, meanwhile, an electric lifting rod can conduct lifting adjustment on the bed body, a rotating ring rod rotates on the outer side of the limiting adjusting ring block, and the purpose of adjusting the angle of the bed body is achieved. The bearing movable plate at the upper end of the rotating shaft block is used for ensuring the stability of the bed body in the angle adjusting process.

The blowout preventer crane comprises a main support, a center shaft is rotationally installed at the top of the main support, rear moving wheels are rotationally installed on the two sides of the main support, and a front fixing frame is fixedly installed at the front end of the main support. The center shaft is fixedly sleeved with a main gear, the top end of the center shaft is fixedly sleeved with an upper supporting frame, an upper supporting cantilever is fixedly installed on the top of the upper supporting frame, a winding motor is fixedly installed on the top of the upper supporting cantilever, an output shaft of the winding motor is fixedly sleeved with a winding wheel, and the winding wheel is sleeved with a winding cable. The blowout preventer crane for ocean engineering is simple in structure and convenient to use, a blowout preventer can be conveniently positioned and lifted, the blowout preventer crane is convenient to move, and the whole device is prevented from rolling over in the process of lifting the blowout preventer through the supporting anti-skid structures on the two sides.

The utility model provides an oil tank connecting pipe assembly and a multifunctional valve, and relates to the technical field of automobile accessories, the oil tank connecting pipe assembly comprises an oil tank flange and a shell, the oil tank flange is an oil tank sealing piece and is used for being installed on an oil tank and sealing a corresponding opening of the oil tank, and the oil tank flange is provided with an internal face and an external face; the shell is fixed with the oil tank flange, the shell penetrates through the oil tank flange and extends to the built-in surface and the external surface, an airflow channel and a built-in joint communicated with the airflow channel are arranged on the shell, and the built-in joint is located on the built-in surface. According to the oil tank connecting pipe assembly and the multifunctional valve, the oil tank flange is arranged, the oil tank ventilation pipe is integrated on the same airflow channel, the built-in connector connected with the rollover valve is arranged in the oil tank, the rollover valve is directly connected with the ventilation pipe from the interior of the oil tank, and extra chassis space does not need to be occupied; and a rollover valve pipeline can be effectively protected in the oil tank and is not easily influenced by external environmental factors.

The invention discloses a self-locking hydraulic cylinder, a cab turnover system and engineering machinery, and relates to the technical field of engineering machinery. The self-locking hydraulic cylinder comprises a main hydraulic cylinder, a self-locking mechanism and an auxiliary hydraulic cylinder; the main hydraulic cylinder comprises a main piston rod and a main cylinder barrel; the self-locking mechanism comprises a mounting frame fixed to the outer wall of the main cylinder barrel, a limiting plate is movably arranged on the mounting frame and fixedly connected with the top of the main piston rod, and a plurality of limiting holes are formed in the limiting plate in the moving direction at intervals. A spring bolt is mounted on the mounting frame corresponding to the limiting hole through a pin shaft; the top of an auxiliary piston rod of the auxiliary hydraulic cylinder is fixedly connected with the spring bolt and used for driving the spring bolt to be matched and locked with the limiting hole. According to the self-locking hydraulic cylinder, the self-locking mechanism and the auxiliary hydraulic cylinder work in a matched mode, locking can be conducted when the main hydraulic cylinder stretches out, when the self-locking hydraulic cylinder is applied to a cab overturning system, the purposes of mechanical locking and potential safety hazard eliminating can be achieved after an oil cylinder loses efficacy, and the self-locking hydraulic cylinder is simple in structure, safe and reliable.

This invention discloses a forced-drive comb-tooth tower garage suitable for low-rise buildings in the field of automated parking systems. The transverse comb-tooth frame includes a transverse frame with arrayed comb-tooth components on both sides. The lifting comb-tooth frame includes symmetrically arranged lifting frames with fixedly connected adapter frames at both ends. Each adapter frame has a welded forced-drive frame. The lifting frames have arrayed comb-tooth components on their sides and symmetrically distributed rotating rods at their lower ends. Symmetrically distributed rectangular limiting posts are located within the forced-drive frames. In this invention, the limiting plates within the comb-tooth components of the forced-drive comb-tooth tower garage can automatically rotate and rise, preventing vehicle displacement and rollover caused by vibrations during the lifting and lowering of the lifting comb-tooth frame, the exchange of positions between the transverse and lifting comb-tooth frames, and the transverse movement of the transverse comb-tooth frame. The lifting comb-tooth frame has a horizontal detection function and a fault protection function.

The invention relates to the technical field of temperature protector detection, in particular to a temperature protector critical flip acoustic feature detection method and system, and the method comprises the steps: obtaining an original sound signal of a bimetallic strip temperature protector; performing dynamic closed-loop suppression on the original sound signal to generate a sound signal after noise reduction; carrying out acoustic feature recognition on the sound signal, and generating an acoustic feature set representing bimetallic behavior characteristics; generating an acoustic parameter compensation variable according to the transmission process behavior of the sound wave in the high-temperature gas; processing the acoustic feature set and the acoustic parameter compensation variable based on a behavior recognition analysis process, and outputting an action feature sequence of the bimetallic strip temperature protector; and when the action characteristic sequence displays a continuous action characteristic state, confirming that the bimetallic strip temperature protector has completed critical overturning. According to the invention, the problems of critical upset misjudgment and incapability of analyzing the pre-upset energy storage process caused by thermal noise interference in a traditional electric heating detection method are effectively solved.