CN116696538A - Method, device, equipment and medium for monitoring abnormal rotation speed of clutch fan - Google Patents
Method, device, equipment and medium for monitoring abnormal rotation speed of clutch fan Download PDFInfo
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- CN116696538A CN116696538A CN202310699293.6A CN202310699293A CN116696538A CN 116696538 A CN116696538 A CN 116696538A CN 202310699293 A CN202310699293 A CN 202310699293A CN 116696538 A CN116696538 A CN 116696538A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 230000005856 abnormality Effects 0.000 claims abstract description 171
- 229920002545 silicone oil Polymers 0.000 claims abstract description 83
- 230000001960 triggered effect Effects 0.000 claims abstract description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
- F01P7/081—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps using clutches, e.g. electro-magnetic or induction clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
- F01P2031/20—Warning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a clutch fan rotating speed abnormality monitoring method, device, equipment and medium. The clutch fan rotating speed abnormality monitoring method comprises the following steps: acquiring the current running state of an engine of a vehicle, and determining an abnormal early warning condition of the target fan rotating speed of the electrically controlled silicone oil clutch according to the current running state of the engine; when the electric control silicone oil clutch fan meets the abnormal early warning condition of the target fan rotating speed, a target timer is triggered, and when the target timer overflows, a fan rotating speed abnormal early warning signal is generated. The technical scheme of the embodiment of the invention can timely find out abnormal rotation speed of the fan and prompt a user, thereby avoiding failure of closed-loop control of the electric control silicone oil clutch fan and ensuring driving safety of the user.
Description
Technical Field
The invention relates to the technical field of vehicle fault identification, in particular to a method, a device, equipment and a medium for monitoring abnormal rotation speed of a clutch fan.
Background
The electric control silicone oil clutch fan is widely applied to various medium and heavy commercial vehicles due to the fact that the electric control silicone oil clutch fan has the advantage of accurate control. The electronic control silicone oil clutch fan realizes closed-loop control of the fan rotating speed through feedback of a fan rotating speed signal.
However, in reality, abnormality of the fan rotation speed signal, that is, an unreliable failure of the fan rotation speed signal, occurs for various reasons (for example, a virtual connection of the rotation speed signal sensor signal line, electromagnetic interference, etc.). When an unreliable fault of a fan rotating speed signal occurs, closed-loop control of the electrically controlled silicone oil clutch fan is invalid, the rotating speed of the fan cannot be controlled normally, and the actual rotating speed of the fan is higher or lower than the target control rotating speed, so that the conditions of lower water temperature, increased oil consumption or overhigh water temperature of the engine are caused when the whole automobile is in operation, and even the engine is pulled.
Disclosure of Invention
The invention provides a clutch fan rotating speed abnormality monitoring method, device, equipment and medium, which are used for solving the problem that a user cannot know the condition of failure of closed-loop control of an electrically controlled silicone oil clutch fan and the driving safety is influenced because the abnormal fan rotating speed is not found in time.
According to an aspect of the present invention, there is provided a clutch fan rotation speed abnormality monitoring method, including:
acquiring the current running state of an engine of a vehicle, and determining an abnormal early warning condition of the target fan rotating speed of the electrically controlled silicone oil clutch according to the current running state of the engine;
when the electric control silicone oil clutch fan meets the abnormal early warning condition of the target fan rotating speed, a target timer is triggered, and when the target timer overflows, a fan rotating speed abnormal early warning signal is generated.
According to another aspect of the present invention, there is provided a clutch fan rotation speed abnormality detection apparatus including:
the rotating speed abnormality early warning condition determining module is used for obtaining the current running state of an engine of the vehicle and determining the target fan rotating speed abnormality early warning condition of the electrically controlled silicone oil clutch according to the current running state of the engine;
the rotating speed abnormality early warning signal generation module is used for triggering the target timer when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition and generating a fan rotating speed abnormality early warning signal when the target timer overflows in a timing mode.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the clutch fan speed anomaly monitoring method of any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute the method for monitoring abnormal rotation speed of a clutch fan according to any one of the embodiments of the present invention.
According to the technical scheme, the current running state of the engine of the vehicle is obtained, the abnormal early warning condition of the target fan speed of the electrically controlled silicone oil clutch is determined according to the current running state of the engine, then when the fan of the electrically controlled silicone oil clutch meets the abnormal early warning condition of the target fan speed, the target timer is triggered, and when the target timer overflows, a fan speed abnormal early warning signal is generated. According to the technical scheme, the target fan rotating speed abnormality early warning condition determined according to the current running state of the engine is divided into the fan rotating speed abnormality judgment based on the running state of the engine, the judgment of the actual fan rotating speed abnormality can be more accordant, when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition, the time length meeting the target fan rotating speed abnormality early warning condition is further monitored based on the target timer, early warning is carried out when the time length arrives, false alarm is prevented, the reliable early warning is carried out when the fan rotating speed abnormality is guaranteed, the problem that a user cannot know the condition that the closed loop control of the electric control silicone oil clutch fan fails due to the fact that the fan rotating speed abnormality is not found in time is solved, the running safety is influenced is solved, the fan rotating speed abnormality can be found in time, the user is prompted, the condition that the closed loop control of the electric control silicone oil clutch fan fails is known in time, and the running safety of the user is guaranteed.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for monitoring abnormal rotation speed of a clutch fan according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for monitoring abnormal rotation speed of a clutch fan according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a clutch fan speed abnormality monitoring logic according to a second embodiment of the present invention;
fig. 4 is a logic diagram for fan speed exception handling according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a clutch fan speed abnormality detection device according to a third embodiment of the present invention;
fig. 6 shows a schematic diagram of an electronic device that may be used to implement an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for monitoring abnormal rotational speed of a clutch fan according to a first embodiment of the present invention, where the method may be performed by a clutch fan rotational speed abnormality detection device, the clutch fan rotational speed abnormality detection device may be implemented in hardware and/or software, and the clutch fan rotational speed abnormality detection device may be configured in an electronic device. The electronic device may include, but is not limited to, an in-vehicle terminal or the like. As shown in fig. 1, the method includes:
step 110, obtaining the current running state of the engine of the vehicle, and determining the abnormal pre-warning condition of the target fan rotating speed of the electrically controlled silicone oil clutch according to the current running state of the engine.
Wherein the current engine operating state may be used to reflect the state of the vehicle engine. The current operating state of the engine may include a start state and an un-start state. The target fan speed abnormality early warning condition can be a condition matched with the current running state of the engine, and whether the clutch fan speed of the electrically controlled silicone oil clutch is abnormal or not is judged. The target fan speed abnormality warning condition may be stored in a memory of the vehicle-mounted terminal.
In the embodiment of the invention, the current running state of the engine of the vehicle can be obtained first, then the target fan speed abnormality early warning condition corresponding to the current running state of the engine and judging whether the clutch fan speed of the electrically controlled silicone oil clutch is abnormal can be determined based on the current running state of the engine.
Alternatively, when the current running state of the engine is the start-up state, the start-up state may be further subdivided into a first start-up state (minimum power operation state) and a second start-up state (maximum power operation state). When the running states of the engine are different, the target fan rotating speed abnormality early warning conditions corresponding to the current running states of the engine are also different.
And 120, triggering a target timer when the electric control silicone oil clutch fan meets the abnormal early warning condition of the target fan rotating speed, and generating a fan rotating speed abnormal early warning signal when the target timer overflows in a timing way.
The target timer may be any timer having a timing function. Alternatively, the target timer may have a correspondence with the target fan rotation speed abnormality warning condition, for example, the timing duration of the target timer corresponding to different target fan rotation speed abnormality warning conditions may be different. The target timer may not have a corresponding relation with the abnormal target fan speed early warning condition, and the timing duration of the target timer corresponding to different abnormal target fan speed early warning conditions may be the same. The abnormal fan speed early warning signal can be a signal for prompting a user to control the abnormal fan speed of the silicone oil clutch fan so as to enable the user to repair the vehicle as soon as possible based on the signal. The fan speed anomaly warning signal may be a text signal and/or a voice signal. The fan rotating speed abnormality early warning signal can be broadcasted and displayed through the vehicle-mounted terminal.
In the embodiment of the invention, the data related to the abnormality judgment of the fan corresponding to the abnormality early warning condition of the target fan can be obtained, the data related to the abnormality judgment of the fan is compared with the abnormality early warning condition of the target fan, if the data related to the abnormality judgment of the fan meets the abnormality early warning condition of the target fan, the electric control silicone oil clutch fan is determined to meet the abnormality early warning condition of the target fan, the target timer is triggered synchronously, and when the target timer overflows, a fan abnormality early warning signal is generated to prompt a user that the fan of the electric control silicone oil clutch fan is abnormal, so that the user can check the condition of the vehicle in time, maintain the vehicle as soon as possible, and prevent the vehicle from being damaged further due to faults. If the data associated with the abnormal judgment of the fan does not meet the abnormal early warning condition of the target fan speed, the electronic control silicone oil clutch fan is determined to not meet the abnormal early warning condition of the target fan speed, a target timer is not required to be triggered, and the fact that the fan speed of the electronic control silicone oil clutch fan is abnormal can be determined.
Optionally, after generating the abnormal rotation speed early warning signal of the fan, the open-loop control of the electrically controlled silicone oil clutch fan can be implemented, so that the fault that the water temperature of the engine is too high or too low can be avoided before a user performs vehicle maintenance.
According to the technical scheme, the current running state of the engine of the vehicle is obtained, the abnormal early warning condition of the target fan speed of the electrically controlled silicone oil clutch is determined according to the current running state of the engine, then when the fan of the electrically controlled silicone oil clutch meets the abnormal early warning condition of the target fan speed, the target timer is triggered, and when the target timer overflows, a fan speed abnormal early warning signal is generated. According to the technical scheme, the target fan rotating speed abnormality early warning condition determined according to the current running state of the engine is divided into the fan rotating speed abnormality judgment based on the running state of the engine, the judgment of the actual fan rotating speed abnormality can be more accordant, when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition, the time length meeting the target fan rotating speed abnormality early warning condition is further monitored based on the target timer, early warning is carried out when the time length arrives, false alarm is prevented, the reliable early warning is carried out when the fan rotating speed abnormality is guaranteed, the problem that a user cannot know the condition that the closed loop control of the electric control silicone oil clutch fan fails due to the fact that the fan rotating speed abnormality is not found in time is solved, the running safety is influenced is solved, the fan rotating speed abnormality can be found in time, the user is prompted, the condition that the closed loop control of the electric control silicone oil clutch fan fails is known in time, and the running safety of the user is guaranteed.
Example two
Fig. 2 is a flowchart of a method for monitoring abnormal rotational speed of a clutch fan according to a second embodiment of the present invention, which is embodied based on the foregoing embodiment, and provides a specific alternative implementation manner for determining an abnormal rotational speed early warning condition of a target fan of an electrically controlled silicone oil clutch according to a current running state of an engine. As shown in fig. 2, the method includes:
step 210, obtaining the current running state of the engine of the vehicle, and obtaining a fan rotating speed abnormal early warning condition set according to the current running state of the engine.
And 220, when the current running state of the engine is an un-started state, taking the first fan rotating speed abnormality early-warning condition in the fan rotating speed abnormality early-warning condition set as a target fan rotating speed abnormality early-warning condition.
The fan rotation speed abnormality pre-warning condition set may be a preset set of pre-warning conditions for distinguishing the fan rotation speed abnormality. The first fan speed abnormality early warning condition may be a fan speed abnormality condition in a fan speed abnormality early warning condition set, for discriminating that the current running state of the engine is a fan speed abnormality condition in an un-started state.
In the embodiment of the invention, if the current running state of the engine is determined to be the un-started state, a first fan rotating speed abnormality early-warning condition corresponding to the un-started state of the engine is inquired from the fan rotating speed abnormality early-warning condition set, and the first fan rotating speed abnormality early-warning condition is used as a target fan rotating speed abnormality early-warning condition.
Step 230, when the current running state of the engine is a starting state, a PWM signal of the fan speed regulator is obtained.
In the embodiment of the invention, if the current running state of the engine is determined to be a starting state, a PWM (Pulse Width Modulation ) signal of a fan rotating speed regulator of the electrically controlled silicone oil clutch is further obtained.
And 240, when the amplitude of the PWM signal is the first amplitude, taking the second fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as a target fan rotating speed abnormality early warning condition.
The first amplitude may be an amplitude of a PWM signal of a fan of the electrically controlled silicone oil clutch at a minimum power. Illustratively, the first amplitude may be 0. The second fan speed abnormality early warning condition may be a fan speed abnormality condition in the fan speed abnormality early warning condition set, for discriminating that the current running state of the engine is a start state, and the amplitude of the PWM signal is the first amplitude.
In the embodiment of the invention, if the current running state of the engine is a starting state and the amplitude of the PWM signal is a first amplitude, namely the current running state of the engine is represented as a first starting state, determining a second fan rotating speed abnormality early-warning condition for abnormality of the fan rotating speed when the current running state of the engine is the starting state and the amplitude of the PWM signal is the first amplitude from a fan rotating speed abnormality early-warning condition set, and taking the second fan rotating speed abnormality early-warning condition as a target fan rotating speed abnormality early-warning condition.
And 250, when the amplitude of the PWM signal is the second amplitude, taking the third fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as a target fan rotating speed abnormality early warning condition.
The second amplitude may be an amplitude of a PWM signal when the fan of the electrically controlled silicone oil clutch rotates at maximum power. The second amplitude may be, for example, 100.
In the embodiment of the invention, if the current running state of the engine is a starting state and the amplitude of the PWM signal is a second amplitude, namely the current running state of the engine is represented as a second starting state, the current running state of the engine is determined to be the starting state from the fan speed abnormality early-warning condition set, and when the amplitude of the PWM signal is the second amplitude, the abnormal third fan speed abnormality early-warning condition of the fan speed is judged, so that the abnormal third fan speed early-warning condition is taken as the abnormal target fan speed early-warning condition.
And 260, triggering a target timer when the electric control silicone oil clutch fan meets the abnormal early warning condition of the target fan rotating speed, and generating a fan rotating speed abnormal early warning signal when the target timer overflows in a timing way.
In an alternative embodiment of the present invention, when the electrically controlled silicone oil clutch fan meets the abnormal pre-warning condition of the target fan speed, triggering the target timer may include: and triggering a target timer when the electrically controlled silicone oil clutch fan meets any one of the first fan rotating speed abnormality early warning condition, the second fan rotating speed abnormality early warning condition or the third fan rotating speed abnormality early warning condition.
Specifically, when the electrically controlled silicone oil clutch fan meets any one of the first fan speed abnormality early warning condition, the second fan speed abnormality early warning condition or the third fan speed abnormality early warning condition, the target timer can be triggered synchronously.
In an alternative embodiment of the present invention, the electrically controlled silicone oil clutch fan satisfies the first fan rotation speed abnormality early warning condition, and may include: and when the current running state of the engine is an un-started state and the real-time rotating speed of the fan is larger than a first rotating speed threshold value, determining that the electrically controlled silicone oil clutch fan meets the first fan rotating speed abnormality early warning condition.
The first rotation speed threshold may be a preset rotation speed threshold that is compared with a real-time rotation speed of the fan when the current running state of the engine is an inactive state. The first rotational speed threshold may be 0. The real-time rotating speed of the fan is the current rotating speed of the fan of the electrically controlled silicone oil clutch.
In the embodiment of the invention, after the current running state of the engine is determined, the real-time rotating speed of the fan can be obtained, when the current running state of the engine is the non-starting state, the real-time rotating speed of the fan can be compared with the first rotating speed threshold, and if the real-time rotating speed of the fan is larger than the first rotating speed threshold, the electrically-controlled silicone oil clutch fan can be determined to meet the first abnormal rotating speed early warning condition of the fan.
In an alternative embodiment of the present invention, the electrically controlled silicone oil clutch fan satisfies the second fan speed abnormality warning condition, and may include: when the current running state of the engine is a starting state and the amplitude of the PWM signal is a first amplitude, and the real-time rotating speed of the fan is smaller than a second rotating speed threshold value, determining that the electrically controlled silicone oil clutch fan meets the abnormal rotating speed early warning condition of the second fan.
The second rotation speed threshold may be preset, and is compared with a real-time rotation speed of the fan when the current running state of the engine is a starting state and the amplitude of the PWM signal is the first amplitude. The second rotational speed threshold may include, but is not limited to, 500 revolutions per minute.
In the embodiment of the invention, after the current running state of the engine is determined, the real-time rotating speed of the fan can be obtained, if the current running state of the engine is a starting state, the amplitude of the PWM signal is further obtained, and when the amplitude of the PWM signal is a first amplitude and the real-time rotating speed of the fan is greater than a second rotating speed threshold value, the condition that the fan of the electrically controlled silicone oil clutch meets the abnormal rotating speed early warning condition of the second fan can be determined.
In an optional embodiment of the present invention, the electrically controlled silicone oil clutch fan satisfies a third fan rotation speed abnormality early warning condition, and may include: when the current running state of the engine is a starting state, the amplitude of the PWM signal is a second amplitude, the absolute difference value between the real-time fan rotating speed and the engine rotating speed does not fall into a third rotating speed threshold value interval, and the engine rotating speed signal is a normal signal, the electrically controlled silicone oil clutch fan is determined to meet the abnormal rotating speed early warning condition of the third fan.
Wherein the absolute difference may be the absolute value of the difference of the two data. The third speed threshold interval may be a preset speed interval for comparison with an absolute difference between the fan real-time speed and the engine speed. For example, the third speed threshold interval may include, but is not limited to (0 rpm, 100 rpm).
In the embodiment of the invention, if the current running state of the engine is a starting state, the amplitude of the PWM signal, the real-time rotating speed of the fan, the engine rotating speed signal and the engine rotating speed are obtained, so that when the amplitude of the PWM signal is a second amplitude, the absolute difference value of the real-time rotating speed of the fan and the engine rotating speed is calculated, the calculated absolute difference value is compared with a third rotating speed threshold interval, and if the absolute difference value of the real-time rotating speed of the fan and the engine rotating speed does not fall into the third rotating speed threshold interval and the engine rotating speed signal is a normal signal, the electrically controlled silicone oil clutch fan is determined to meet the abnormal pre-warning condition of the rotating speed of the third fan.
Alternatively, the fan speed anomaly warning signal may be classified into at least two levels. And when the electric control silicone oil clutch fan meets the abnormal early warning condition of the third fan rotating speed and the target timer overflows, the generated abnormal early warning signal of the fan rotating speed is the highest-level early warning. When the electric control silicone oil clutch fan meets the second fan rotating speed abnormality early warning condition or the first fan rotating speed abnormality early warning condition, and the target timer overflows in a timing way, the generated fan rotating speed abnormality early warning signal is in a low-level early warning mode.
According to the technical scheme, the current running state of the engine of the vehicle is obtained, and the fan speed abnormality early-warning condition set is obtained according to the current running state of the engine, so that when the current running state of the engine is in an un-started state, a first fan speed abnormality early-warning condition in the fan speed abnormality early-warning condition set is used as a target fan speed abnormality early-warning condition, when the current running state of the engine is in a starting state, a PWM signal of a fan speed regulator is obtained, further when the amplitude of the PWM signal is in a first amplitude, a second fan speed abnormality early-warning condition in the fan speed abnormality early-warning condition set is used as a target fan speed abnormality early-warning condition, and further when the amplitude of the PWM signal is in a second amplitude, a third fan speed abnormality early-warning condition in the fan speed abnormality early-warning condition set is used as a target fan speed abnormality early-warning condition, and therefore when an electrically controlled silicone oil clutch fan meets the target fan speed abnormality early-warning condition, a target timer is triggered, and when the target timer overflows, a fan speed abnormality early-warning signal is generated.
In a specific example, when the engine is not started, the silicone oil clutch fan should also have no rotational speed. After the engine is started, when the PWM output of the fan speed PID regulator is 0, the clutch of the fan delivers a minimum torque, at which time the fan operates at a minimum speed. However, due to mechanical limitations, the fan speed is not less than a certain threshold (second speed threshold). After the engine is started, when the amplitude of the PWM signal output of the fan speed PID regulator is 100, the clutch of the fan is completely closed, and the fan and the engine should run at the same speed, and clutch fan speed abnormality monitoring logic shown in fig. 3 is designed based on the principle.
Fig. 4 is a schematic diagram of fan speed abnormality processing logic provided in the second embodiment of the present invention, as shown in fig. 4, a PWM signal and a fan real-time speed output by a fan speed controller of an electrically controlled silicone oil clutch are obtained in real time, whether the fan speed signal is abnormal or not is determined based on the PWM signal, the fan real-time speed and a target fan speed abnormality pre-warning condition, if it is determined that the abnormality exists, a fan speed abnormality pre-warning signal is generated and prompted, and if it is determined that the abnormality does not exist, a step of determining whether the fan speed signal is abnormal is returned.
According to the technical scheme, the target fan rotating speed abnormality early warning condition determined according to the current running state of the engine is divided into the fan rotating speed abnormality judgment based on the running state of the engine, the judgment of the actual fan rotating speed abnormality can be more accordant, when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition, the time length meeting the target fan rotating speed abnormality early warning condition is further monitored based on the target timer, early warning is carried out when the time length arrives, false alarm is prevented, the reliable early warning is carried out when the fan rotating speed abnormality is guaranteed, the problem that a user cannot know the condition that the closed loop control of the electric control silicone oil clutch fan fails due to the fact that the fan rotating speed abnormality is not found in time is solved, the running safety is influenced is solved, the fan rotating speed abnormality can be found in time, the user is prompted, the condition that the closed loop control of the electric control silicone oil clutch fan fails is known in time, and the running safety of the user is guaranteed.
Example III
Fig. 5 is a schematic structural diagram of a clutch fan rotation speed abnormality detection device according to a third embodiment of the present invention. As shown in fig. 5, the apparatus includes: a rotational speed abnormality pre-warning condition determination module 310, and a rotational speed abnormality pre-warning signal generation module 320, wherein,
the abnormal rotating speed early warning condition determining module 310 is used for obtaining the current running state of the engine of the vehicle and determining the abnormal rotating speed early warning condition of the target fan of the electrically controlled silicone oil clutch according to the current running state of the engine;
the rotation speed abnormality early warning signal generating module 320 is configured to trigger a target timer when the electrically controlled silicone oil clutch fan satisfies a target fan rotation speed abnormality early warning condition, and generate a fan rotation speed abnormality early warning signal when the target timer overflows.
According to the technical scheme, the current running state of the engine of the vehicle is obtained, the abnormal early warning condition of the target fan speed of the electrically controlled silicone oil clutch is determined according to the current running state of the engine, then when the fan of the electrically controlled silicone oil clutch meets the abnormal early warning condition of the target fan speed, the target timer is triggered, and when the target timer overflows, a fan speed abnormal early warning signal is generated. According to the technical scheme, the target fan rotating speed abnormality early warning condition determined according to the current running state of the engine is divided into the fan rotating speed abnormality judgment based on the running state of the engine, the judgment of the actual fan rotating speed abnormality can be more accordant, when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition, the time length meeting the target fan rotating speed abnormality early warning condition is further monitored based on the target timer, early warning is carried out when the time length arrives, false alarm is prevented, the reliable early warning is carried out when the fan rotating speed abnormality is guaranteed, the problem that a user cannot know the condition that the closed loop control of the electric control silicone oil clutch fan fails due to the fact that the fan rotating speed abnormality is not found in time is solved, the running safety is influenced is solved, the fan rotating speed abnormality can be found in time, the user is prompted, the condition that the closed loop control of the electric control silicone oil clutch fan fails is known in time, and the running safety of the user is guaranteed.
Optionally, the abnormal rotation speed early warning condition determining module 310 includes a target fan abnormal rotation speed early warning condition determining unit, configured to obtain a set of abnormal rotation speed early warning conditions of the fan; and when the current running state of the engine is a non-starting state, taking a first fan rotating speed abnormality early-warning condition in the fan rotating speed abnormality early-warning condition set as the target fan rotating speed abnormality early-warning condition.
Optionally, the target fan speed abnormality early warning condition determining unit is further configured to obtain a pulse width modulation PWM signal of the fan speed regulator when the current running state of the engine is a start state; when the amplitude of the PWM signal is a first amplitude, taking a second fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as the target fan rotating speed abnormality early warning condition; and when the amplitude of the PWM signal is the second amplitude, taking a third fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as the target fan rotating speed abnormality early warning condition.
Optionally, the rotation speed abnormality early warning signal generating module 320 includes a target timer triggering unit, configured to trigger the target timer when the electrically controlled silicone oil clutch fan meets any one of the first fan rotation speed abnormality early warning condition, the second fan rotation speed abnormality early warning condition, or the third fan rotation speed abnormality early warning condition.
Optionally, the target timer triggering unit includes an early warning condition judging subunit, configured to determine that the electrically controlled silicone oil clutch fan meets the first fan speed abnormality early warning condition when the current running state of the engine is an unactuated state and the real-time fan speed is greater than a first speed threshold.
Optionally, the early warning condition judging subunit is configured to determine that the electrically controlled silicone oil clutch fan meets the abnormal early warning condition of the second fan rotation speed when the current running state of the engine is a starting state and the amplitude of the PWM signal is a first amplitude and the real-time rotation speed of the fan is less than a second rotation speed threshold.
Optionally, the early warning condition judging subunit is configured to determine that the electrically controlled silicone oil clutch fan meets the abnormal early warning condition of the third fan rotation speed when the current running state of the engine is a starting state, the amplitude of the PWM signal is a second amplitude, the absolute difference between the real-time fan rotation speed and the engine rotation speed does not fall into the third rotation speed threshold interval, and the engine rotation speed signal is a normal signal.
The clutch fan rotating speed abnormality detection device provided by the embodiment of the invention can execute the clutch fan rotating speed abnormality monitoring method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 6 shows a schematic diagram of an electronic device that may be used to implement an embodiment of the invention. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 6, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the clutch fan speed abnormality monitoring method.
In some embodiments, the clutch fan speed anomaly monitoring method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the clutch fan rotation speed abnormality monitoring method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the clutch fan speed anomaly monitoring method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for monitoring abnormal rotational speed of a clutch fan, comprising:
acquiring the current running state of an engine of a vehicle, and determining an abnormal early warning condition of the target fan rotating speed of an electrically controlled silicone oil clutch according to the current running state of the engine;
when the electric control silicone oil clutch fan meets the abnormal pre-warning condition of the target fan rotating speed, a target timer is triggered, and when the target timer overflows, a fan rotating speed abnormal pre-warning signal is generated.
2. The method of claim 1, wherein determining a target fan speed anomaly pre-warning condition for an electrically controlled silicone oil clutch based on the current engine operating state comprises:
acquiring a fan rotating speed abnormality early warning condition set;
and when the current running state of the engine is a non-starting state, taking a first fan rotating speed abnormality early-warning condition in the fan rotating speed abnormality early-warning condition set as the target fan rotating speed abnormality early-warning condition.
3. The method of claim 2, wherein determining a target fan speed anomaly pre-warning condition for an electrically controlled silicone oil clutch based on the current engine operating state, further comprises:
when the current running state of the engine is a starting state, acquiring a Pulse Width Modulation (PWM) signal of a fan rotating speed regulator;
when the amplitude of the PWM signal is a first amplitude, taking a second fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as the target fan rotating speed abnormality early warning condition;
and when the amplitude of the PWM signal is the second amplitude, taking a third fan rotating speed abnormality early warning condition in the fan rotating speed abnormality early warning condition set as the target fan rotating speed abnormality early warning condition.
4. The method of claim 3, wherein triggering a target timer when the electrically controlled silicone oil clutch fan meets the target fan speed anomaly pre-warning condition comprises:
and triggering the target timer when the electrically controlled silicone oil clutch fan meets any one of the first fan rotating speed abnormality early warning condition, the second fan rotating speed abnormality early warning condition or the third fan rotating speed abnormality early warning condition.
5. The method of claim 4, wherein the electronically controlled silicone oil clutch fan meeting the first fan speed anomaly pre-warning condition comprises:
and when the current running state of the engine is an un-started state and the real-time fan rotating speed is greater than a first rotating speed threshold value, determining that the electric control silicone oil clutch fan meets the first fan rotating speed abnormality early warning condition.
6. The method of claim 4, wherein the electronically controlled silicone oil clutch fan meeting the second fan speed anomaly pre-warning condition comprises:
when the current running state of the engine is a starting state and the amplitude of the PWM signal is a first amplitude, and the real-time rotating speed of the fan is smaller than a second rotating speed threshold value, determining that the electric control silicone oil clutch fan meets the abnormal rotating speed early warning condition of the second fan.
7. The method of claim 4, wherein the electrically controlled silicone oil clutch fan meets the third fan speed anomaly pre-warning condition, comprising:
and when the current running state of the engine is a starting state, the amplitude of the PWM signal is a second amplitude, the absolute difference value between the real-time fan rotating speed and the engine rotating speed does not fall into a third rotating speed threshold value interval, and the engine rotating speed signal is a normal signal, determining that the electrically controlled silicone oil clutch fan meets the abnormal rotating speed early warning condition of the third fan.
8. A clutch fan rotation speed abnormality detection device, characterized by comprising:
the system comprises a rotating speed abnormality early warning condition determining module, a speed abnormality early warning condition determining module and a speed abnormality early warning module, wherein the rotating speed abnormality early warning condition determining module is used for obtaining the current running state of an engine of a vehicle and determining the target fan rotating speed abnormality early warning condition of an electrically controlled silicone oil clutch according to the current running state of the engine;
the rotating speed abnormality early warning signal generation module is used for triggering a target timer when the electric control silicone oil clutch fan meets the target fan rotating speed abnormality early warning condition and generating a fan rotating speed abnormality early warning signal when the target timer overflows in a timing mode.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the clutch fan speed anomaly monitoring method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the clutch fan speed anomaly monitoring method of any one of claims 1-7 when executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310699293.6A CN116696538A (en) | 2023-06-13 | 2023-06-13 | Method, device, equipment and medium for monitoring abnormal rotation speed of clutch fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310699293.6A CN116696538A (en) | 2023-06-13 | 2023-06-13 | Method, device, equipment and medium for monitoring abnormal rotation speed of clutch fan |
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| Publication Number | Publication Date |
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| CN116696538A true CN116696538A (en) | 2023-09-05 |
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|---|---|---|---|
| CN202310699293.6A Pending CN116696538A (en) | 2023-06-13 | 2023-06-13 | Method, device, equipment and medium for monitoring abnormal rotation speed of clutch fan |
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| Country | Link |
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| CN (1) | CN116696538A (en) |
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2023
- 2023-06-13 CN CN202310699293.6A patent/CN116696538A/en active Pending
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