阅读说明：本技术 一种基于涉水深度监测的汽车发动机自动启停控制装置及方法 (Automatic automobile engine starting and stopping control device and method based on wading depth monitoring ) 是由 姚宝珍 曹峰 党鹏飞 马安坤 于 2020-04-17 设计创作，主要内容包括：本发明提供一种基于涉水深度监测的汽车发动机自动启停控制装置及方法。本发明装置,包括：水位监测器、分析器和自动启停控制器,水位监测器实时监测车辆涉水信息,并将监测信号发送至分析器,分析器判断监测信号的持续时间,结合预设控制逻辑判断车辆当前涉水情况,生成相应的控制指令发送至自动启停控制器；自动启停控制器接收指令,根据指令内容向车辆ECU发送启动或关闭车辆自动启停功能的指令。本发明能够使车辆在涉水过程中,自动关闭启停功能,避免因发动机涉水熄火后二次启动的损害,车辆通过涉水路段后,恢复自动启停功能,保证车辆在正常运行时的燃油经济性。通过对水位信号持续时间的判断,避免了车辆因偶然溅水造成自动启停功能误关闭。(The invention provides an automatic start-stop control device and method for an automobile engine based on wading depth monitoring. The device of the invention comprises: the system comprises a water level monitor, an analyzer and an automatic start-stop controller, wherein the water level monitor monitors vehicle wading information in real time and sends monitoring signals to the analyzer, the analyzer judges the duration of the monitoring signals, judges the current wading condition of a vehicle by combining preset control logic, generates corresponding control instructions and sends the control instructions to the automatic start-stop controller; and the automatic start-stop controller receives the instruction and sends an instruction for starting or closing the automatic start-stop function of the vehicle to the vehicle ECU according to the instruction content. The invention can automatically close the starting and stopping function in the wading process of the vehicle, avoid the damage of secondary starting after the engine is flamed out in wading, recover the automatic starting and stopping function after the vehicle passes through the wading road section, and ensure the fuel economy of the vehicle in normal operation. Through the judgment on the duration time of the water level signal, the automatic starting and stopping function is prevented from being mistakenly closed due to accidental water splashing.)

1. The utility model provides an automatic controlling means that stops that opens of automobile engine based on wading degree of depth monitoring which characterized in that includes:

the water level monitor is used for monitoring the vehicle wading information in real time and sending a monitoring signal to the analyzer;

the analyzer is connected with the water level monitor and is used for judging the duration time of the monitoring signal, judging the current wading condition of the vehicle by combining a preset control logic, generating a corresponding control instruction and sending the control instruction to the automatic start-stop controller;

and the automatic start-stop controller is connected with the analyzer and the vehicle ECU and is used for receiving the instruction sent by the analyzer and sending an instruction for starting or closing the automatic start-stop function of the vehicle to the vehicle ECU according to the instruction content.

2. The automatic start-stop control device for the automobile engine based on wading depth monitoring of claim 1, wherein the water level monitor comprises a first water level sensor and a second water level sensor, and corresponding monitoring signals are a first monitoring signal and a second monitoring signal respectively; the first water level sensor is installed at an air inlet of a vehicle engine, and the second water level sensor is installed at the tail of a vehicle exhaust pipe.

3. The automatic start-stop control device for the automobile engine based on wading depth monitoring of claim 1, wherein the analyzer is preferably a single chip microcomputer controller.

4. The automatic start-stop control device for the automobile engine based on wading depth monitoring of claim 1, wherein the preset control logic comprises:

when the analyzer receives the monitoring signal and the duration is longer than the preset duration, judging that the current vehicle wades, otherwise, judging that the vehicle wades accidentally;

when the analyzer does not receive the monitoring signal and the duration time exceeds the preset opening time, judging that the vehicle drives away from the wading road section;

when the analyzer judges that the current vehicle wades, an instruction for closing the automatic start-stop function is sent to the automatic start-stop controller;

when the analyzer judges that the current vehicle splashes water accidentally, the analyzer judges whether the duration time of the monitoring signal is longer than the preset duration time;

and when the analyzer judges that the current vehicle drives away from the wading road section, sending an instruction for starting the automatic start-stop function to the automatic start-stop controller.

5. An automatic start-stop control method of an automobile engine based on wading depth monitoring is characterized by comprising the following steps:

step 101: in the running process of the vehicle, the water level monitor monitors the current water level of the vehicle in real time, and the step 102 is carried out;

step 102: the first water level sensor or the second water level sensor judges whether a water level signal is monitored, and if the water level signal is monitored, the step 103 is carried out; otherwise, no signal is sent;

step 103: the first water level sensor or the second water level sensor sends a corresponding first monitoring signal or second monitoring signal to the analyzer, and the step 104 is entered;

step 104: the analyzer judges whether the monitoring signal is received, if yes, the step 105 is entered; otherwise, go to step 106;

step 105: the analyzer judges whether the duration of the monitoring signal is greater than the preset duration, if so, the process goes to step 107; otherwise, feeding back to step 104;

step 106: the analyzer judges whether the duration time of not receiving the monitoring signal is longer than the preset opening time, if so, the step 108 is entered; otherwise, feeding back to step 104;

step 107: the analyzer sends a control instruction for closing the automatic start-stop function to the automatic start-stop controller, and the process goes to step 109;

step 108: the analyzer sends a control instruction for starting the automatic start-stop function to the automatic start-stop controller, and the process goes to step 109;

step 109: the automatic start-stop controller sends a control signal to the vehicle ECU according to the received control instruction sent by the analyzer, and the step 110 is entered;

step 110: the vehicle ECU40 turns on or off the automatic start-stop function according to the control signal.

6. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program when executed performs the method of claim 5.

7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to perform the method of claim 5.

Technical Field

The invention relates to the technical field of automobile engine control, in particular to an automatic automobile engine starting and stopping control device and method based on wading depth monitoring.

Background

With the rapid development of economy in China, the quantity of motor vehicles kept increases rapidly, thereby bringing a series of problems such as urban traffic jam, environmental pollution and the like. With the increase of the environmental protection of the country, a series of vehicle oil consumption limits and emission regulations are successively provided, and automobile manufacturers vigorously develop and allocate a series of new technologies, such as a light mixing system, an automatic engine start-stop technology and the like, on new vehicles in order to meet increasingly severe vehicle environment protection requirements. Wherein the content of the first and second substances,

the automatic starting and stopping technology of the engine is one of the most widely applied technologies on passenger cars at present, and most of the technologies are equipped with the automatic starting and stopping function of the engine from luxury brands of cars to common household cars. The automatic engine starting and stopping technology is a technology for quickly starting an engine when a driver releases a brake pedal or steps on an accelerator pedal and the like when the engine is closed under the condition that a vehicle encounters temporary parking (such as waiting for a red light and road congestion) in the running process. The technology can effectively reduce the exhaust emission and the oil consumption.

The engine starting and stopping technology applied to the existing passenger car has simpler control logic, and needs a driver to manually close the engine starting and stopping function under certain special conditions, particularly under the condition that the car wades. When a vehicle wades in the water, if the wading depth is deep, water may enter an air inlet system of an engine, so that air in an engine cylinder is suddenly lacked to participate in combustion, and the vehicle is instantly flamed out; or because the automobile exhaust pipe is low in position, accumulated water flows back into the exhaust pipe due to oil collection in the wading process of a driver, and the unsmooth exhaust of the engine is suppressed. In any case, when the vehicle wades, if the engine is shut down, the engine cannot be started for the second time, otherwise, the engine is flooded, the connecting rod of the engine is deformed if the engine is light, and the cylinder of the engine is scrapped if the engine is heavy, so that irreversible damage is caused to the engine.

Due to global warming, rainfall increases in rainy seasons, and urban waterlogging becomes more serious. According to data display of the Ministry of construction, 62% of cities in China have waterlogging, and the frequency of the waterlogging is in an increasing trend. The urban motor vehicles are more in quantity, when urban inland inundation occurs, the condition that the vehicles wade is very easy to occur, if the engine is flamed out in the wading process, part of novice drivers may loosen the brake pedal in a hurry, and the automatic start-stop system judges that the brake pedal is loosened, so that the engine is restarted, and irreversible damage is caused to the engine.

However, the existing automatic start-stop technology does not consider the automatic start-stop function when the vehicle wades, so that the vehicle is prevented from being automatically started in accumulated water to damage an engine under the condition that a driver mistakenly operates or forgets to manually close the start-stop function.

Disclosure of Invention

According to the technical problem that an automobile control system cannot automatically shut off the starting and stopping functions of an engine in the wading process of an automobile, the automatic starting and stopping control device and method for the automobile engine based on wading depth monitoring are provided. The damage to the engine caused by the automatic restarting of the engine in accumulated water of the vehicle under certain special conditions is avoided.

The technical means adopted by the invention are as follows:

the utility model provides an automatic controlling means that stops that opens of automobile engine based on wading depth monitoring, includes:

the water level monitor is used for monitoring the vehicle wading information in real time and sending a monitoring signal to the analyzer;

the analyzer is connected with the water level monitor and is used for judging the duration time of the monitoring signal, judging the current wading condition of the vehicle by combining a preset control logic, generating a corresponding control instruction and sending the control instruction to the automatic start-stop controller;

and the automatic start-stop controller is connected with the analyzer and the vehicle ECU and is used for receiving the instruction sent by the analyzer and sending an instruction for starting or closing the automatic start-stop function of the vehicle to the vehicle ECU according to the instruction content.

Further, the water level monitor comprises a first water level sensor and a second water level sensor, and the corresponding monitoring signals are a first monitoring signal and a second monitoring signal respectively; the first water level sensor is installed at an air inlet of a vehicle engine, and the second water level sensor is installed at the tail of a vehicle exhaust pipe.

Further, the analyzer is preferably a single chip controller.

Further, the preset control logic comprises:

when the analyzer receives the monitoring signal and the duration is longer than the preset duration, judging that the current vehicle wades, otherwise, judging that the vehicle wades accidentally;

when the analyzer does not receive the monitoring signal and the duration time exceeds the preset opening time, judging that the vehicle drives away from the wading road section;

when the analyzer judges that the current vehicle wades, an instruction for closing the automatic start-stop function is sent to the automatic start-stop controller;

when the analyzer judges that the current vehicle splashes water accidentally, the analyzer judges whether the duration time of the monitoring signal is longer than the preset duration time;

and when the analyzer judges that the current vehicle drives away from the wading road section, sending an instruction for starting the automatic start-stop function to the automatic start-stop controller.

The invention also provides an automatic start-stop control method of the automobile engine based on wading depth monitoring, which comprises the following steps:

step 101: in the running process of the vehicle, the water level monitor monitors the current water level of the vehicle in real time, and the step 102 is carried out;

step 102: the first water level sensor or the second water level sensor judges whether a water level signal is monitored, and if the water level signal is monitored, the step 103 is carried out; otherwise, no signal is sent;

step 103: the first water level sensor or the second water level sensor sends a corresponding first monitoring signal or second monitoring signal to the analyzer, and the step 104 is entered;

step 104: the analyzer judges whether the monitoring signal is received, if yes, the step 105 is entered; otherwise, go to step 106;

step 105: the analyzer judges whether the duration of the monitoring signal is greater than the preset duration, if so, the process goes to step 107; otherwise, feeding back to step 104;

step 106: the analyzer judges whether the duration time of not receiving the monitoring signal is longer than the preset opening time, if so, the step 108 is entered; otherwise, feeding back to step 104;

step 107: the analyzer sends a control instruction for closing the automatic start-stop function to the automatic start-stop controller, and the process goes to step 109;

step 108: the analyzer sends a control instruction for starting the automatic start-stop function to the automatic start-stop controller, and the process goes to step 109;

step 109: the automatic start-stop controller sends a control signal to the vehicle ECU according to the received control instruction sent by the analyzer, and the step 110 is entered;

step 110: the vehicle ECU40 turns on or off the automatic start-stop function according to the control signal.

The invention further provides a storage medium comprising a stored program, wherein when the program runs, the steps of the automatic start-stop control method of the automobile engine are executed.

The invention further provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor runs the steps of executing the automatic start-stop control method of the automobile engine through the computer program.

Compared with the prior art, the invention has the following advantages:

1. according to the automatic start-stop control device for the automobile engine, whether the water level of the head of the automobile reaches the air inlet of the engine or whether the water level of the tail of the automobile reaches the tail of the exhaust pipe is monitored in real time through the water level monitor in the wading process of the automobile, the automatic start-stop function or the automatic stop-stop function of the automobile is achieved, damage to the engine caused by secondary start of the automobile after the engine is flamed out due to wading is avoided, and the fuel economy of the automobile in normal operation is guaranteed.

2. The automatic start-stop control device for the automobile engine provided by the invention can avoid the error closing of the automatic start-stop function caused by accidental water splashing of the automobile through the judgment of the duration time of the water level signal.

For the reasons, the invention can be widely popularized in the fields of automobile engine control and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an automatic start-stop control device of an automobile engine.

FIG. 2 is a flow chart of the automatic start-stop control method of the automobile engine.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1, the invention provides an automatic start-stop control device of an automobile engine based on wading depth monitoring, which comprises:

the water level monitor 10 is used for monitoring the vehicle wading information in real time and sending a monitoring signal to the analyzer 20; the water level monitor 10 includes a first water level sensor and a second water level sensor, the first water level sensor is installed at an air inlet of a vehicle engine, and a corresponding monitoring signal is a first monitoring signal. The second water level sensor is arranged at the tail part of the vehicle exhaust pipe, and the corresponding monitoring signal is a second monitoring signal;

and the analyzer is connected with the water level monitor 10, and when the water level monitor 10 monitors that the water level of the locomotive is positioned at an air inlet of the engine, a first monitoring signal is sent to the analyzer 20, or when the water level of the tail of the vehicle is monitored to be positioned at the tail of the exhaust pipe, a second monitoring signal is sent to the analyzer 20. The analyzer 20 judges the current wading condition of the vehicle by combining a preset control logic according to the duration time of the received first monitoring signal or the received second monitoring signal, generates a corresponding control instruction and sends the control instruction to the automatic start-stop controller 30; in this embodiment, the analyzer 30 is preferably a single chip controller.

And the automatic start-stop controller 30 is connected with the analyzer 20 and the vehicle ECU40, receives the instruction sent by the analyzer, and sends an instruction for starting or closing the automatic start-stop function of the vehicle to the vehicle ECU according to the instruction content.

In the invention, the preset control logic is the corresponding relation between the starting or closing of the automatic starting and stopping function of the engine under the wading condition of the vehicle, for example, the automatic starting and stopping function of the engine is closed when the vehicle wades; and after the vehicle is driven out of the wading road section, the function of starting and stopping the engine automatically is restored to be normal. Specifically, the method comprises the following steps:

when the analyzer 20 receives the monitoring signal and the duration is longer than the preset duration, it is determined that the vehicle is wading, otherwise, the vehicle is accidentally splashed;

when the analyzer 20 does not receive the monitoring signal and the duration time exceeds the preset opening time, judging that the vehicle drives away from the wading road section;

when the analyzer 20 judges that the vehicle is wading, an instruction for closing the automatic start-stop function is sent to the automatic start-stop controller;

when the analyzer 20 determines that the current vehicle accidentally splashes water, the analyzer 20 determines whether the duration of the monitoring signal is greater than a preset duration;

when the analyzer 20 determines that the current vehicle is driving away from the wading section, an instruction to start the automatic start-stop function is sent to the automatic start-stop controller 30.

As shown in FIG. 2, the invention provides an automatic start-stop control method of an automobile engine based on wading depth monitoring, which comprises the following steps:

step 101: in the running process of the vehicle, the water level monitor 10 monitors the current water level of the vehicle in real time, and the step 102 is entered;

step 102: the first water level sensor or the second water level sensor judges whether a water level signal is monitored, and if the water level signal is monitored, the step 103 is carried out; otherwise, no signal is sent;

step 103: the first water level sensor or the second water level sensor sends a corresponding first monitoring signal or second monitoring signal to the analyzer 20, and the step 104 is entered;

step 104: the analyzer 20 determines whether a monitoring signal is received, if yes, step 105 is performed; otherwise, go to step 106;

step 105: the analyzer 20 determines whether the duration of the monitoring signal is greater than a preset duration, if so, the process goes to step 107; otherwise, feeding back to step 104;

step 106: the analyzer 20 determines whether the duration of the non-reception of the monitoring signal is longer than a preset opening time, if so, the process goes to step 108; otherwise, feeding back to step 104;

step 107: the analyzer 20 sends a control instruction for turning off the automatic start-stop function to the automatic start-stop controller 30, and step 109 is performed;

step 108: the analyzer 20 sends a control instruction for starting the automatic start-stop function to the automatic start-stop controller 30, and the process goes to step 109;

step 109: the automatic start-stop controller 30 sends a control signal to the vehicle ECU40 according to the received control command sent by the analyzer 20, and then the process goes to step 110;

step 110: the vehicle ECU4040 turns on or off the automatic start-stop function according to the control signal.

In conclusion, the automatic start-stop control device and method for the automobile engine based on wading depth monitoring provided by the invention can monitor and judge whether the vehicle is wading or not in real time, and if yes, the automatic start-stop function is closed through the vehicle ECU40, so that irreversible damage to the automobile engine caused by secondary ignition when the vehicle is wading to be flamed out due to misoperation of a driver or forgetting to manually close the automatic function is prevented. Meanwhile, after the vehicle passes through the wading road section through monitoring and judging, the automatic start-stop function is recovered through the vehicle ECU40 to be started normally, and the fuel economy of the vehicle under the normal working condition without wading is guaranteed. In addition, the analyzer 20 provided by the invention judges whether the vehicle wades by judging the duration time of the water level signal, so that the automatic starting and stopping function is prevented from being switched off by mistake due to accidental water splashing of the vehicle.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.