CN114394074A - Control method and device of electronic vacuum pump, controller and vehicle - Google Patents
Control method and device of electronic vacuum pump, controller and vehicle Download PDFInfo
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- CN114394074A CN114394074A CN202210067489.9A CN202210067489A CN114394074A CN 114394074 A CN114394074 A CN 114394074A CN 202210067489 A CN202210067489 A CN 202210067489A CN 114394074 A CN114394074 A CN 114394074A
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- 238000002679 ablation Methods 0.000 abstract description 8
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- 238000005086 pumping Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/30—Environment conditions or position therewithin
- B60T2210/32—Vehicle surroundings
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Abstract
The application provides a control method of an electronic vacuum pump, which comprises the following steps: the method comprises the steps of obtaining environmental information of an environment where a vehicle is located, determining a closing threshold value of the electronic vacuum pump according to atmospheric pressure in the environmental information and a corresponding relation between pre-calibrated pressure and the threshold value, and switching the electronic vacuum pump to a stalling state when the vacuum degree of the electronic vacuum pump is larger than or equal to the closing threshold value. The method adaptively adjusts the closing threshold of the electronic vacuum pump in combination with the environmental information of the environment where the vehicle is located, avoids the problem that the vacuum degree of the electronic vacuum pump cannot reach the closing threshold due to environmental influence, further enables the electronic vacuum pump to be in a working state all the time, reduces ablation risk, and ensures the braking force of the vehicle.
Description
Technical Field
The present disclosure relates to the field of vehicle control technologies, and in particular, to a method, an apparatus, a controller, a vehicle, and a computer-readable storage medium for controlling an electronic vacuum pump.
Background
With the rapid development of the automobile industry towards new and quadruple directions such as electromotion, intellectualization, networking, sharing and the like, more and more automobile companies begin to research and develop new energy automobiles such as electric vehicles, hybrid power and the like. The new energy vehicle is not provided with a traditional vacuum source such as an engine, but an electronic vacuum pump is additionally added for pumping air to provide vacuum for a brake system.
At present, the electronic vacuum pump is generally controlled by a controller corresponding to the electronic vacuum pump according to a set strategy. Specifically, the controller obtains the current vacuum degree of the electronic vacuum pump through the vacuum degree sensor, then compares the current vacuum degree with a set opening threshold value and a set closing valve value, and determines to switch the electronic vacuum pump to a working state or a stalling state according to a comparison result. For example, if the current vacuum level is below the opening threshold, the controller may switch the electronic vacuum pump to an operating state. For another example, if the current vacuum level is above the shut-off threshold, the controller may switch the electronic vacuum pump to a stall state.
However, in some scenarios, for example, when the automobile travels to a high altitude area, the vacuum degree is raised by the electronic vacuum pump due to the reduction of the atmospheric pressure, and there may be a problem that the vacuum degree cannot reach the closing threshold all the time. Thus, the electronic vacuum pump will always be in operation with a risk of ablation, resulting in a loss of braking force for the vehicle.
Disclosure of Invention
The application provides a control method of an electronic vacuum pump, which is used for adaptively adjusting a closing threshold value of the electronic vacuum pump by combining environmental information of an environment where a vehicle is located, so that the problem that the vacuum degree of the electronic vacuum pump cannot reach the closing threshold value due to environmental influence, and further the electronic vacuum pump is always in a working state is solved, the ablation risk is reduced, and the braking force of the vehicle is guaranteed. The present application also provides a control apparatus of an electronic vacuum pump, a controller, a vehicle, a computer-readable storage medium, and a computer program product.
In a first aspect, the present application provides a method of controlling an electronic vacuum pump. The method may be performed by a controller, which may be a stand-alone controller or a controller integrating the Control function of the Electronic vacuum pump on an existing controller such as an Electronic Control Unit (ECU).
Specifically, environmental information of an environment in which a vehicle is located is acquired, wherein the environmental information comprises atmospheric pressure; determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value; and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, switching the electronic vacuum pump to a stalling state.
In some possible implementations, the method further includes:
acquiring single continuous working time of the electronic vacuum pump;
when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, switching the electronic vacuum pump to a stalling state, including:
and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value and the single continuous working time of the electronic vacuum pump is greater than or equal to the preset time, switching the electronic vacuum pump to a stalling state.
In some possible implementations, the method further includes:
determining a count value corresponding to a counter of the electronic vacuum pump according to the working time of the electronic vacuum pump and the stalling time of the electronic vacuum pump;
and when the count value reaches a first preset value, switching the electronic vacuum pump to a stop state.
In some possible implementations, the method further includes:
and when the count value reaches a second preset value, sending alarm information to a user.
In some possible implementations, the method further includes:
acquiring the working condition of the vehicle;
determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relationship between the pre-calibrated pressure and the threshold value, wherein the determining comprises the following steps:
and determining the closing threshold value of the electronic vacuum pump according to the atmospheric pressure, the working condition of the vehicle and the corresponding relationship between the pressure and the threshold value under different pre-calibrated working conditions.
In some possible implementations, the method further includes:
determining the starting threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value;
and when the vacuum degree of the electronic vacuum pump is smaller than or equal to the starting threshold value, switching the electronic vacuum pump to a working state.
In a second aspect, the present application provides a control apparatus for an electronic vacuum pump. The device comprises:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring environmental information of an environment where a vehicle is located, and the environmental information comprises atmospheric pressure;
the determining module is used for determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pressure and the threshold value calibrated in advance;
and the control module is used for switching the electronic vacuum pump to a stalling state when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value.
In some possible implementations, the obtaining module is further configured to:
acquiring single continuous working time of the electronic vacuum pump;
the control module is specifically configured to:
and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value and the single continuous working time of the electronic vacuum pump is greater than or equal to the preset time, switching the electronic vacuum pump to a stalling state.
In some possible implementations, the determining module is further configured to:
determining a count value corresponding to a counter of the electronic vacuum pump according to the working time of the electronic vacuum pump and the stalling time of the electronic vacuum pump;
the control module is further configured to:
and when the count value reaches a first preset value, switching the electronic vacuum pump to a stop state.
In some possible implementations, the control module is further configured to:
and when the count value reaches a second preset value, sending alarm information to a user.
In some possible implementations, the obtaining module is further configured to:
acquiring the working condition of the vehicle;
the determining module is specifically configured to:
and determining the closing threshold value of the electronic vacuum pump according to the atmospheric pressure, the working condition of the vehicle and the corresponding relationship between the pressure and the threshold value under different pre-calibrated working conditions.
In some possible implementations, the determining module is further configured to:
determining the starting threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value;
the control module is specifically configured to:
and when the vacuum degree of the electronic vacuum pump is smaller than or equal to the starting threshold value, switching the electronic vacuum pump to a working state.
In a third aspect, the present application provides a controller. The controller comprises a processor and a memory; the processor and the memory are in communication with each other. The processor is configured to execute instructions stored in the memory to cause the controller to perform a method of controlling an electronic vacuum pump according to the first aspect of the present application.
In a fourth aspect, the present application provides a vehicle. The vehicle comprises an electronic vacuum pump and a controller for executing the method of controlling an electronic vacuum pump according to the first aspect of the present application to control the electronic vacuum pump.
In a fifth aspect, the present application provides a computer-readable storage medium. The computer readable storage medium has stored therein instructions that, when run on a controller, cause the controller to perform the method of controlling an electronic vacuum pump according to the first aspect or any one of the implementations of the first aspect.
In a sixth aspect, the present application provides a computer program product containing instructions. When run on a controller, causes the controller to perform the method of controlling an electronic vacuum pump as described in the first aspect or any one of the implementations of the first aspect.
The present application can further combine to provide more implementations on the basis of the implementations provided by the above aspects.
Drawings
In order to more clearly illustrate the technical method of the embodiments of the present application, the drawings used in the embodiments will be briefly described below.
Fig. 1 is a system architecture diagram illustrating a control method for an electronic vacuum pump according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a control method of an electronic vacuum pump according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a control apparatus of an electronic vacuum pump according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a controller according to an embodiment of the present application.
Detailed Description
The scheme in the embodiments provided in the present application will be described below with reference to the drawings in the present application.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely descriptive of the various embodiments of the application and how objects of the same nature can be distinguished.
In order to facilitate understanding of the technical solutions of the present application, some technical terms related to the present application are described below.
Vacuum, in theory, refers to a state in which the volume does not contain any substances inside. In reality, a state where a true vacuum does not exist is generally called a vacuum state, and a state where the air pressure in the container is lower than a normal atmospheric pressure (specifically, a normal atmospheric pressure, 101325 Pa).
The degree of vacuum is an index for evaluating the state of vacuum. The degree of vacuum can represent the degree of gas dilution in a vacuum. Vacuum is generally pressure dependent. In some embodiments, the vacuum level may also be represented by a pressure value.
The electronic vacuum pump adopts piezoelectric material as power device, and can completely implement electronization from control to drive, and can completely control gas exchange and transmission by means of electronic integrated system so as to implement electronic equipment capable of changing vacuum degree.
The electronic vacuum pump is generally controlled by a controller corresponding to the electronic vacuum pump according to a set strategy. Specifically, the controller obtains the current vacuum degree of the electronic vacuum pump through the vacuum degree sensor, then compares the current vacuum degree with a set opening threshold value and a set closing valve value, and determines to switch the electronic vacuum pump to a working state or a stalling state according to a comparison result. For example, if the current vacuum level is below the opening threshold, the controller may switch the electronic vacuum pump to an operating state. For another example, if the current vacuum level is above the shut-off threshold, the controller may switch the electronic vacuum pump to a stall state.
However, in some scenarios, for example, when the automobile travels to a high altitude area, the vacuum degree is raised by the electronic vacuum pump due to the reduction of the atmospheric pressure, and there may be a problem that the vacuum degree cannot reach the closing threshold all the time. Thus, the electronic vacuum pump will always be in operation with a risk of ablation, resulting in a loss of braking force for the vehicle.
In view of this, the present application provides a method for controlling an electronic vacuum pump. The method can be executed by a controller, which can be an independent controller or a controller with the control function of the electronic vacuum pump integrated on an existing controller such as an Electronic Control Unit (ECU).
Specifically, the controller acquires environmental information of an environment where the vehicle is located, the environmental information includes atmospheric pressure, then the controller determines a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and a corresponding relationship between a pre-calibrated pressure and the threshold value, and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, the controller switches the electronic vacuum pump to a stall state.
In the method, the controller is combined with the environmental information of the environment where the vehicle is located to self-adaptively adjust the closing threshold value of the electronic vacuum pump, so that the problem that the vacuum degree of the electronic vacuum pump cannot reach the closing threshold value due to environmental influence, and the electronic vacuum pump is always in a working state is solved, the ablation risk is reduced, and the braking force of the vehicle is guaranteed.
In order to make the technical solution of the present application clearer and easier to understand, a system architecture of the embodiment of the present application is described below with reference to the drawings.
Referring to the schematic architecture of the control system shown in fig. 1, a controller 10 and an electronic vacuum pump 20 are included in the system 100. A vacuum degree sensor, not shown in fig. 1, is disposed in the electronic vacuum pump 20, and the electronic vacuum pump 20 can acquire the vacuum degree of the electronic vacuum pump 20 through the vacuum degree sensor. The controller 10 controls the electronic vacuum pump 20 to be turned on and off according to the degree of vacuum of the electronic vacuum pump 20.
Specifically, the controller 10 obtains environment information of an environment where the vehicle is located, where the environment information includes atmospheric pressure, and then the controller 10 determines a closing threshold of the electronic vacuum pump according to the atmospheric pressure and a correspondence between a pressure and a threshold that are calibrated in advance, and when a vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold, the controller 10 switches the electronic vacuum pump to a stall state.
The controller 10 may further obtain a single continuous operating time of the electronic vacuum pump 20, and switch the electronic vacuum pump to a stop state when the vacuum degree of the electronic vacuum pump 20 is greater than or equal to the shutdown threshold and the single continuous operating time of the electronic vacuum pump is greater than or equal to a preset time.
Because the closing threshold value changes along with the change of the environmental information such as the atmospheric pressure and the like, for example, when the atmospheric pressure decreases, the closing threshold value also decreases, and based on this, the vacuum degree of the electronic vacuum pump 20 can reach the closing threshold value, so that the problem that the electronic vacuum pump 20 is always in a working state is avoided, the ablation risk is reduced, and the braking force of the vehicle is ensured.
Next, a control method of the electronic vacuum pump in the embodiment of the present application will be described from the perspective of the controller 10.
Referring to fig. 2, a flow chart of a method of controlling the electronic vacuum pump includes:
s202: the controller 10 acquires environmental information of an environment in which the vehicle is located.
The environmental information includes atmospheric pressure. The unit of atmospheric pressure may be patm or bar. When the vehicle is traveling in different areas, such as areas at different altitudes, the atmospheric pressure of the environment in which the vehicle is located may be different. The pumping capacity of the electronic vacuum pump 20 may be affected by the atmospheric pressure, and for this reason, the controller 10 may acquire the atmospheric pressure of the environment in which the vehicle is located, thereby acquiring environmental information of the environment in which the vehicle is located.
S204: the controller 10 determines the closing threshold of the electronic vacuum pump 20 according to the atmospheric pressure and the corresponding relationship between the pressure and the threshold, which are calibrated in advance.
In practical applications, for example, when the vehicle leaves a factory, a manufacturer may calibrate in advance a correspondence between the pressure and the threshold, where the correspondence includes a correspondence between an atmospheric pressure (for example, an absolute atmospheric pressure) and a closing threshold. Further, the corresponding relationship may also include a corresponding relationship between atmospheric pressure and an opening threshold.
Based on this, the controller 10 may determine the closing threshold of the electronic vacuum pump 20 according to the acquired atmospheric pressure of the environment in which the vehicle is located and the above correspondence. Further, the controller 10 may also determine the starting threshold of the electronic vacuum pump 20 according to the atmospheric pressure of the environment where the vehicle is located and the corresponding relationship.
In some possible implementations, the demand for vacuum may be different for different operating conditions of the vehicle (particularly vehicle operating conditions). The working condition refers to data points of the running speed and time of a certain type of automobile in a specific environment. For example, the operating conditions may include a low speed operating condition (e.g., an operating condition of driving on a rural road), an urban operating condition, a vehicle speed signal fault state, a fault-free operating condition of the electronic vacuum pump, and an emergency braking operating condition.
The vehicle speed is typically less than 20 kilometers per hour (km/h) at low speed conditions and greater than 20km/h at urban conditions. Based on this, the manufacturer can respectively calibrate the corresponding relation between the pressure and the threshold value according to different working conditions. Under the emergency braking working condition, the braking change rate is greater than a calibrated value. The brake change rate can be measured by the pedal opening and the pedal opening change rate. When the pedal opening is greater than 30% of the calibration value, and the pedal opening change rate is greater than 50% of the calibration value, it can be considered that the brake change rate is greater than the calibration value.
Based on this, the manufacturer can respectively calibrate the corresponding relation between the pressure and the threshold value according to different working conditions. Correspondingly, the controller 10 may further obtain a working condition of the vehicle, for example, a vehicle speed of the vehicle is identified, or a pedal opening degree and a pedal opening degree change rate of the vehicle are identified to determine the working condition of the vehicle, and then determine the shutdown threshold of the electronic vacuum pump 20 according to the atmospheric pressure, the working condition of the vehicle, and a corresponding relationship between a pressure and a threshold value in different pre-calibrated working conditions.
S206: when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, the controller 10 switches the electronic vacuum pump to a stall state.
Specifically, the controller 10 may acquire the vacuum level of the electronic vacuum pump 20 through a vacuum level sensor and compare the vacuum level with a shut-off threshold. When the degree of vacuum is greater than or equal to the shut-off threshold, the controller 10 may switch the electronic vacuum pump to a stopped state. Further, the controller 10 may also compare the vacuum level to an opening threshold. When the vacuum level is less than or equal to the turn-on threshold, the controller 10 may switch the electronic vacuum pump to the turn-on state.
In some possible implementations, the controller 10 may also control the electronic vacuum pump 20 in conjunction with a single continuous operation time of the electronic vacuum pump 20, based on the consideration that continuous operation of the electronic vacuum pump 20 for a longer period of time may also cause ablation of the electronic vacuum pump 20. Specifically, the controller 10 may acquire a single continuous operation time of the electronic vacuum pump, and switch the electronic vacuum pump to a stop state when the vacuum degree of the electronic vacuum pump 20 is greater than or equal to the shutdown threshold and the single continuous operation time of the electronic vacuum pump 20 is greater than or equal to a preset time. The preset time may be set empirically, for example, may be set to 3 seconds (second, s).
For ease of understanding, the following description is made with reference to specific examples. Referring to the table of correspondence between pressure and threshold values under different conditions shown in table 1, the following is shown:
TABLE 1 corresponding relationship table of pressure and threshold value under different working conditions
Based on table 1, when the current operating condition of the vehicle is the low speed operating condition, the controller 10 obtains the actually measured atmospheric pressure, and then determines that the closing threshold is 30% of the atmospheric pressure according to the corresponding relationship between the calibrated pressure and the threshold, and records the closing threshold as 30% patm. When the current working condition of the vehicle is an urban working condition and a vehicle speed signal fault state, and the electronic vacuum pump does not report a fault working condition or an emergency braking working condition, the controller 10 obtains an actually measured atmospheric pressure, and then determines that the closing threshold value is 22% of the atmospheric pressure according to a corresponding relation between the calibrated pressure and the threshold value, and records the closing threshold value as 22% patm. Similarly, the controller may also determine the opening threshold (i.e., the activation threshold) in the same manner. The controller 10 can determine whether the vacuum degree of the electronic vacuum pump 20 is greater than the shutdown threshold and whether the single-connection operating time of the electronic vacuum pump 20 is greater than or equal to the preset time, and if so, switch the electronic vacuum pump 20 to the shutdown state,
Further, the controller 10 may also maintain a counter for the electronic vacuum pump 20. The controller 10 may determine a count value corresponding to a counter of the electronic vacuum pump according to the operating time of the electronic vacuum pump and the stalling time of the electronic vacuum pump, and switch the electronic vacuum pump to a stalling state when the count value reaches a first preset value.
The controller 10 may provide a multi-stage protection mechanism for the electronic vacuum pump 20. For example, the controller 10 may transmit a warning message to the user when the count value reaches the second preset value. Wherein the second preset value is generally smaller than the first preset value.
For ease of understanding, the embodiments of the present application provide an example for illustration.
In this example, the controller 20 initializes the value of the counter, the electronic vacuum pump 20 starts to operate, and counts +1 every 1S of operation, and when the electronic vacuum pump 20 stops operating, counts-3 every 1S of operation, the counter minimum is 0, and when the counter value rises to 90, the electronic vacuum pump 20 gives an alarm, continuously sends an alarm light for reminding, and sends a text for reminding: "Brake Vacuum Pump overload" records a fault code: the brake vacuum pump operates overtime. The electronic vacuum pump 20 can be normally controlled to operate, the counter value continues to operate, when the counter rises to 180 degrees, the electronic vacuum pump 20 stops operating, when the counter value is less than 150 degrees, the electronic vacuum pump 20 can operate, and when the counter value is less than 90 degrees, the alarm lamp and the corresponding characters are turned off.
Based on the above description, the present application provides a control method for an electronic vacuum pump. The method adaptively adjusts the closing threshold value according to the atmospheric pressure, realizes the fine control of the electronic vacuum pump 20, improves the control precision of the electronic vacuum pump, effectively prevents ablation on the premise of not additionally increasing related sensors, greatly reduces the cost of the whole vehicle, and improves the driving safety.
Based on the method provided by the embodiment of the application, the embodiment of the application also provides a control device of the electronic vacuum pump corresponding to the method.
Referring to a schematic structural diagram of a control apparatus of an electronic vacuum pump shown in fig. 3, the apparatus 300 includes:
an obtaining module 302, configured to obtain environmental information of an environment where a vehicle is located, where the environmental information includes atmospheric pressure;
a determining module 304, configured to determine a closing threshold of the electronic vacuum pump according to the atmospheric pressure and a corresponding relationship between a pre-calibrated pressure and a threshold;
and the control module 306 is configured to switch the electronic vacuum pump to a stall state when the vacuum degree of the electronic vacuum pump is greater than or equal to the shutdown threshold.
In some possible implementations, the obtaining module 302 is further configured to:
acquiring single continuous working time of the electronic vacuum pump;
the control module 306 is specifically configured to:
and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value and the single continuous working time of the electronic vacuum pump is greater than or equal to the preset time, switching the electronic vacuum pump to a stalling state.
In some possible implementations, the determining module 304 is further configured to:
determining a count value corresponding to a counter of the electronic vacuum pump according to the working time of the electronic vacuum pump and the stalling time of the electronic vacuum pump;
the control module 306 is further configured to:
and when the count value reaches a first preset value, switching the electronic vacuum pump to a stop state.
In some possible implementations, the control module 306 is further configured to:
and when the count value reaches a second preset value, sending alarm information to a user.
In some possible implementations, the obtaining module 302 is further configured to:
acquiring the working condition of the vehicle;
the determining module 304 is specifically configured to:
and determining the closing threshold value of the electronic vacuum pump according to the atmospheric pressure, the working condition of the vehicle and the corresponding relationship between the pressure and the threshold value under different pre-calibrated working conditions.
In some possible implementations, the determining module 304 is further configured to:
determining the starting threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value;
the control module 306 is specifically configured to:
and when the vacuum degree of the electronic vacuum pump is smaller than or equal to the starting threshold value, switching the electronic vacuum pump to a working state.
The control apparatus 300 of the electronic vacuum pump according to the embodiment of the present application may correspond to performing the method described in the embodiment of the present application, and the above and other operations and/or functions of each module/unit of the control apparatus 300 of the electronic vacuum pump are respectively for implementing the corresponding flow of each method in the embodiment shown in fig. 2, and are not described herein again for brevity.
The application provides a controller for realizing a control method of an electronic vacuum pump. Referring to the schematic diagram of the controller shown in fig. 4, the controller 400 includes a processor 402 and a memory 404. The processor 402 and the memory 404 are in communication with each other. For example, the processor 402 and the memory 404 may communicate with each other via a bus. The processor 402 is configured to execute instructions stored in the memory 404 to cause the controller 400 to execute a method of controlling an electronic vacuum pump.
Based on the controller 400 provided in the embodiment of the present application, the embodiment of the present application also provides a vehicle, which may be a new energy automobile, for example. The new energy automobile comprises a controller 400 and an electronic vacuum pump. The controller 400 controls the electronic vacuum pump by performing the control method of the electronic vacuum pump described above.
The present application provides a computer readable storage medium having stored therein instructions that, when run on an apparatus, cause the controller 400 to execute the above-described method of controlling an electronic vacuum pump.
The present application provides a computer program product containing instructions which, when run on a controller 400, cause the controller 400 to perform the above-described control method of the electronic vacuum pump.
It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be substantially embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, an exercise device, or a network device) to execute the method according to the embodiments of the present application.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, training device, or data center to another website site, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a training device, a data center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Claims (10)
1. A method of controlling an electronic vacuum pump, the method comprising:
acquiring environmental information of an environment where a vehicle is located, wherein the environmental information comprises atmospheric pressure;
determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value;
and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, switching the electronic vacuum pump to a stalling state.
2. The method of claim 1, further comprising:
acquiring single continuous working time of the electronic vacuum pump;
when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value, switching the electronic vacuum pump to a stalling state, including:
and when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value and the single continuous working time of the electronic vacuum pump is greater than or equal to the preset time, switching the electronic vacuum pump to a stalling state.
3. The method of claim 1, further comprising:
determining a count value corresponding to a counter of the electronic vacuum pump according to the working time of the electronic vacuum pump and the stalling time of the electronic vacuum pump;
and when the count value reaches a first preset value, switching the electronic vacuum pump to a stop state.
4. The method of claim 3, further comprising:
and when the count value reaches a second preset value, sending alarm information to a user.
5. The method according to any one of claims 1 to 4, further comprising:
acquiring the working condition of the vehicle;
determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relationship between the pre-calibrated pressure and the threshold value, wherein the determining comprises the following steps:
and determining the closing threshold value of the electronic vacuum pump according to the atmospheric pressure, the working condition of the vehicle and the corresponding relationship between the pressure and the threshold value under different pre-calibrated working conditions.
6. The method according to any one of claims 1 to 4, further comprising:
determining the starting threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pre-calibrated pressure and the threshold value;
and when the vacuum degree of the electronic vacuum pump is smaller than or equal to the starting threshold value, switching the electronic vacuum pump to a working state.
7. An apparatus for controlling an electronic vacuum pump, the apparatus comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring environmental information of an environment where a vehicle is located, and the environmental information comprises atmospheric pressure;
the determining module is used for determining a closing threshold value of the electronic vacuum pump according to the atmospheric pressure and the corresponding relation between the pressure and the threshold value calibrated in advance;
and the control module is used for switching the electronic vacuum pump to a stalling state when the vacuum degree of the electronic vacuum pump is greater than or equal to the closing threshold value.
8. A controller, characterized in that the controller comprises a processor and a memory;
the processor is configured to execute instructions stored in the memory to cause the controller to perform a method of controlling an electronic vacuum pump as claimed in any one of claims 1 to 6.
9. A vehicle comprising an electronic vacuum pump, and a controller for executing the control method of the electronic vacuum pump according to any one of claims 1 to 6 to control the electronic vacuum pump.
10. A computer-readable storage medium, characterized by comprising instructions which, when run on an apparatus, cause the apparatus to carry out the method of controlling an electronic vacuum pump according to any of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210067489.9A CN114394074A (en) | 2022-01-20 | 2022-01-20 | Control method and device of electronic vacuum pump, controller and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210067489.9A CN114394074A (en) | 2022-01-20 | 2022-01-20 | Control method and device of electronic vacuum pump, controller and vehicle |
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| CN202210067489.9A Pending CN114394074A (en) | 2022-01-20 | 2022-01-20 | Control method and device of electronic vacuum pump, controller and vehicle |
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