CN108953131A - The method and apparatus for detecting electric vacuum pump system leak - Google Patents
The method and apparatus for detecting electric vacuum pump system leak Download PDFInfo
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- CN108953131A CN108953131A CN201810759092.XA CN201810759092A CN108953131A CN 108953131 A CN108953131 A CN 108953131A CN 201810759092 A CN201810759092 A CN 201810759092A CN 108953131 A CN108953131 A CN 108953131A
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- vacuum pump
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- pumping system
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- electric vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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Abstract
The present invention proposes a kind of method and apparatus for detecting electric vacuum pump system leak, and method includes: the accumulative operation duration of the electric vacuum pump described in real-time statistics in the operational process of electric vacuum pump；When the accumulative operation duration reaches the maximum functional duration of permission, according to the current vacuum degree of the Motorized vacuum pumping system and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；If the current vacuum degree is less than first threshold values, it is determined that the Motorized vacuum pumping system is in leak condition, is capable of detecting when whether Motorized vacuum pumping system leaks.
Description
Technical field
The present invention relates to electric vehicle engineering field more particularly to it is a kind of detect electric vacuum pump system leak method and
Device.
Background technique
In the related technology, when being vacuumized using electric vacuum pump, usually only the vacuum capacity of electric vacuum pump is carried out
Judgement judges the ability that vacuum is generated in the electric vacuum pump unit time.But the relevant technologies the problem is that, it is electronic
Vacuum pump system is easy to happen leakage, and then influences the safety of vehicle operation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
First purpose is to propose a kind of method for detecting electric vacuum pump system leak, to realize electric vacuum pump system leak
Detection.
Second object of the present invention is to propose a kind of device for detecting electric vacuum pump system leak.
In order to achieve the above object, first aspect present invention embodiment proposes a kind of method, comprising the following steps: electronic true
The accumulative operation duration of electric vacuum pump described in real-time statistics in the operational process of sky pump；Reach fair in the accumulative operation duration
When maximum functional duration perhaps, according to the current vacuum degree of the Motorized vacuum pumping system and preset first threshold values, institute is judged
State whether Motorized vacuum pumping system is in leak condition；If the current vacuum degree is less than first threshold values, it is determined that
The Motorized vacuum pumping system is in leak condition.
The method of detection Motorized vacuum bump leakage according to an embodiment of the present invention, passes through the operational process in electric vacuum pump
The accumulative operation duration of middle real-time statistics electric vacuum pump, and when accumulative operation duration reaches the maximum functional duration of permission,
If current vacuum degree is less than the first threshold values, it is determined that Motorized vacuum pumping system is in leak condition.The present invention is implemented as a result,
The detection method of example is capable of detecting when whether Motorized vacuum pumping system leaks, so that the safety of vehicle operation be effectively ensured.
According to one embodiment of present invention, the determination Motorized vacuum pumping system is in after leak condition, also
Include: to be compared the current vacuum degree with the threshold values of preset multiple leak conditions, determines the current vacuum
The locating threshold range of degree, and then determine the leakage class of the Motorized vacuum pumping system.
According to one embodiment of present invention, after the leakage class for determining the Motorized vacuum pumping system,
Further include: when the leakage class for determining the Motorized vacuum pumping system is the second leakage class, let out using with described second
The alarm strategy of ratings match is leaked, carries out leakiness alarm, and control the electric vacuum pump and run in the safe mode.
According to one embodiment of present invention, the safe mode is run with the duty cycle set and is rested after operation
Preset time interval executes the operating condition as operating condition, according to preset work times circulation.
According to one embodiment of present invention, after the control electric vacuum pump is run in the safe mode, also
Include: after the safe mode end of run, continue to return execute it is described according to current true of the Motorized vacuum pumping system
Reciprocal of duty cycle and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；If described current true
Reciprocal of duty cycle is more than or equal to first threshold values, then updates the number that current vacuum degree is greater than the first threshold values；And described
When the number that current vacuum degree is more than or equal to the first threshold values reaches the first preset times, controls the electric vacuum pump and hold
Row makes a concession driving operating mode.
According to one embodiment of present invention, after the leakage class for determining the Motorized vacuum pumping system,
Further include: when the leakage class for determining the Motorized vacuum pumping system is third leakage class, let out using with the third
Reveal the alarm strategy of ratings match, carries out leakiness alarm, and torque limit is carried out to the control motor of the electric vacuum pump
System, and the control electric vacuum pump are run in the safe mode.
According to one embodiment of present invention, in the vacuum degree and first current according to the Motorized vacuum pumping system
Threshold values, judges whether the Motorized vacuum pumping system is in front of leak condition, further includes: reaches in the accumulative operation duration
When working normally duration, by the current vacuum degree of the Motorized vacuum pumping system compared with first threshold values, if described work as
Preceding vacuum degree is less than first threshold values, then controls the electric vacuum pump and work on to the accumulative operation duration arrival
The maximum functional duration.
According to one embodiment of present invention, the electric vacuum pump described in real-time statistics in the operational process of electric vacuum pump
Accumulative operation duration before, further includes: obtain the atmospheric value of current environment；According to the atmospheric value got and often
The corresponding threshold coefficient of a leakage decision threshold, obtains the leakage decision threshold of the current environment, wherein leak judgement threshold values
Threshold values including the first threshold values and multiple leakage class.
According to one embodiment of present invention, the acquisition current environment atmospheric value, comprising: acquisition atmosphere pressure sensor
The voltage signal of output；Judge whether the voltage signal exceeds preset range, and exceeds preset range in the voltage signal
When the voltage signal is adjusted；According to the voltage signal or voltage signal adjusted for being in the preset range, obtain
Obtain the atmospheric value.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of detection electric vacuum pump system leak
Device, comprising: statistical module, the accumulative fortune for electric vacuum pump described in the real-time statistics in the operational process of electric vacuum pump
Row duration；Judgment module, for when the accumulative operation duration reaches the maximum functional duration allowed, according to described electronic true
The current vacuum degree of empty pumping system and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；
And when the current vacuum degree is less than first threshold values, determine that the Motorized vacuum pumping system is in leak condition.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the method for the detection electric vacuum pump system leak of the embodiment of the present invention；
Fig. 2 is the flow chart of the method for the detection electric vacuum pump system leak of one specific embodiment of the present invention
Fig. 3 is the block diagram of the device of the detection electric vacuum pump system leak of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the method and system of the detection Motorized vacuum bump leakage of the embodiment of the present invention is described.
Fig. 1 is the flow chart of the method for the detection electric vacuum pump system leak of the embodiment of the present invention.As shown in Figure 1, this
The method of the detection Motorized vacuum bump leakage of inventive embodiments, comprising the following steps:
S101: the accumulative operation duration of real-time statistics electric vacuum pump in the operational process of electric vacuum pump.
S102: when accumulative operation duration reaches the maximum functional duration of permission, current according to Motorized vacuum pumping system
Vacuum degree and preset first threshold values, judge whether Motorized vacuum pumping system is in leak condition.
S103: if current vacuum degree is less than the first threshold values, it is determined that Motorized vacuum pumping system is in leak condition.
Wherein, the first threshold values is the closing threshold values of electric vacuum pump.
It should be noted that Motorized vacuum pumping system includes electric vacuum pump, vacuum tank and vacuum sensor, wherein
For electric vacuum pump for vacuumizing to vacuum tank, vacuum sensor is used to detect the real-time vacuum degree of Motorized vacuum pumping system.
When electric vacuum pump operates normally, vacuum tank vacuum degree under electric vacuum pump vacuum action is gradually risen, until reaching
Close threshold values.In other words, under normal mode, electric vacuum pump is opened operation and is vacuumized to vacuum tank, is reaching normal fortune
When row operating time, the current vacuum degree of vacuum sensor detection system reaches closing threshold values, and control electric vacuum pump is closed,
Stop vacuumizing.Therefore, if Motorized vacuum pump operation reaches maximum functional duration, the current vacuum degree of system can not still reach
To closing threshold values, then it represents that electric vacuum pump system leak constantly has ambient atmos to enter system, influences electric vacuum pump
Vacuumizing effect.
Specifically, in the operational process of electric vacuum pump, the accumulative operation duration of real-time statistics electric vacuum pump, and
Accumulative operation duration is compared with maximum functional duration, when accumulative operation duration is greater than or equal to maximum functional duration,
It determines the long maximum functional duration for reaching permission of accumulative operation, judges the current vacuum degree of Motorized vacuum pumping system and preset the
The size of one threshold values, if current vacuum degree is less than the first threshold values, it is determined that Motorized vacuum pumping system is in leak condition.
According to one embodiment of present invention, after determining that Motorized vacuum pumping system is in leak condition, further includes: will
Current vacuum degree is compared with the threshold values of preset multiple leak conditions, determines threshold values model locating for current vacuum degree
It encloses, and then determines the leakage class of Motorized vacuum pumping system.
Wherein, the threshold values of multiple leak conditions can be two or three, corresponding, and threshold range can be three or four.
Leakage class below by taking the threshold values of two leak conditions as an example, in detail to describe to determine Motorized vacuum pumping system
Process.
S201: current vacuum degree is compared with preset second threshold values, if current vacuum degree is greater than second
Threshold values, it is determined that Motorized vacuum pumping system is in the first leak condition.
S202: if current vacuum degree is less than or equal to the second threshold values, by current vacuum degree and preset third
Threshold values is compared, if current vacuum degree is greater than third threshold values, it is determined that system is let out in second at Motorized vacuum pumping system
Leak grade.
S203: if current vacuum degree is less than or equal to third threshold values, it is determined that Motorized vacuum pumping system is in third
Leakage class.
Wherein, the first threshold values is greater than the second threshold values, and the second threshold values is greater than third threshold values.That is, being less than or equal to the first threshold values
And be greater than between the second threshold values and form the first threshold range, corresponding first leakage class less than or equal to the second threshold values and is greater than
The second threshold range is formed between third threshold values, corresponding second leakage class is less than or equal to third threshold values and forms third threshold values
Range, corresponding third leakage class.
Specifically, after current vacuum degree is greater than preset first threshold values, first judge current vacuum degree and second
The relationship of threshold values, if preset threshold value is greater than the second threshold values, it is determined that current vacuum degree is in the first threshold range, corresponding
Vacuum pump system is in the first leakage class, if current vacuum degree is less than or equal to the second threshold values, further judgement is worked as
Relationship between preceding vacuum degree and third threshold values, if current vacuum degree is less than or equal to the second threshold values and is greater than third valve
Value, it is determined that current vacuum degree is in the second threshold range, and corresponding vacuum pump system is in the second leakage class, if worked as
Preceding vacuum degree is less than or equal to third threshold values, it is determined that current vacuum degree is in third threshold range, corresponding vacuum pump
System is in third leakage class.
It should be understood that since the size of the first threshold values, the second threshold values and third threshold values is gradually successively decreased, in other words, first
The leakiness of leakage class is lower than the leakiness of the second leakage class, and the leakiness of the second leakage class is let out lower than third
Leak the leakiness of grade.For example, the first leakage class, the second leakage class and third leakage class can be respectively designated as low
Spend leakage class, moderate leakage class and height leakage class.Wherein, the first threshold values can be the closing threshold values of electric vacuum pump,
Second threshold values can differentiate that threshold values, third threshold values can be the unlatching threshold values of electric vacuum pump for electric vacuum pump system leak.
According to one embodiment of present invention, when the leakage class for determining Motorized vacuum pumping system is the second leakage class
When, using with the matched alarm strategy of the second leakage class, leakiness alarm is carried out, and control electric controlled vacuum pump with safe mould
Formula operation.
It should be noted that the leakiness due to Motorized vacuum pumping system is increased with the promotion of leakage class, because
This is when the leakage class of Motorized vacuum pumping system is the second leakage class (moderate leakage class), then it represents that electric vacuum pump system
System leakage is more serious, alarms, and control electric vacuum pump and run with security operating mode.
Wherein, safe mode using the duty cycle operation that sets and rests preset time interval as operating condition after operation,
It is recycled according to preset work times and executes operating condition.For example, when the duty cycle can preset for control Motorized vacuum pump operation first
Between, time interval can be the second preset time, cycle-index N, that is, control the first preset time of Motorized vacuum pump operation, so
After rest the second preset time, restart the first preset time of operation, the second preset time of resting recycles n times with this.Wherein,
First preset time and the second preset time can be equal, can also be unequal, and N is integer greater than 1, such as 10.
Further, after safe mode end of run, continue to return executing according to current true of Motorized vacuum pumping system
Reciprocal of duty cycle and preset first threshold values, judge whether Motorized vacuum pumping system is in leak condition, if current vacuum degree is greater than
Or be equal to the first threshold values, then the number that current vacuum degree is greater than the first threshold values is updated, and be greater than in current vacuum degree
Or when equal to the number of the first threshold values reaching the first preset times, control electric vacuum pump, which executes, makes a concession driving operating mode.
Wherein, the first preset times can be 10 times.
As a result, can after electric vacuum pump system leak degree reaches moderate leakage class, by safe mode operation come
The current vacuum degree of Motorized vacuum pumping system is adjusted, thus under the premise of guaranteeing safety traffic, to greatest extent using current
The residue of vehicle can ability to work, and can be prevented unexpected by way of regression point after safe mode increasing
Factor cause systems stay to recycle execution in fault mode.
According to another embodiment of the invention, when the leakage class for determining Motorized vacuum pumping system is third leakage etc.
When grade, using, progress leakiness alarm tactful with the matched alarm of third leakage class, and to the control of electric vacuum pump electricity
Machine carries out torque limit, and control electric vacuum pump is run in the safe mode.
It should be understood that when the leakage class of Motorized vacuum pumping system is third leakage class, electric vacuum pump system
System is in height leak condition, and Motorized vacuum pumping system issues serious leak alarm at this time, while to the control of electric vacuum pump electricity
Machine carries out torque limit, and controls electric vacuum pump and run in the safe mode.
It should also be noted that, when the leakage class of Motorized vacuum pumping system is the first leakage class, electric vacuum pump
System is in low leak condition, although not influencing traffic safety, can return at this point, Motorized vacuum pumping system has leakage situation
Normal mode of operation continues to drive a vehicle.
According to one embodiment of present invention, according to the current vacuum degree of electric vacuum pump and the first threshold values, judge electricity
Whether dynamic vacuum pump is in front of state, further includes: when accumulative operation duration reaches and works normally duration, by electric vacuum pump
The current vacuum degree of system is compared with the first threshold values, if current vacuum degree controls electric vacuum pump less than the first threshold values
It works on and reaches maximum functional duration to accumulative operation duration.
That is, after electric vacuum pump unlatching operation vacuumizes vacuum tank, control electric vacuum pump fortune
Row works normally duration, then judges whether current vacuum degree reaches the first threshold values, if current vacuum degree reaches first
Threshold values then controls electric vacuum pump closing, stops vacuumizing, if current vacuum degree controls electronic less than the first threshold values
Vacuum pump, which works on, reaches maximum functional duration to accumulative operation duration, at this point, leaking again Motorized vacuum pumping system
Judgement.
A specific embodiment according to the present invention, as shown in Fig. 2, the detection Motorized vacuum pumping system of the embodiment of the present invention
The method of leakage, comprising the following steps:
S301: normal mode of operation driving.
S302: electric vacuum pump System self-test.
S303: judge whether the current vacuum degree of system is less than or equal to the unlatching threshold values of electric vacuum pump.
If so, thening follow the steps S304；If it is not, then return step S301.
S304: control electric vacuum pump normal operation operating time.
S305: judge whether the current vacuum degree of system is less than or equal to the closing threshold values of electric vacuum pump.
If so, thening follow the steps S306；If it is not, then return step S301.
S306: control Motorized vacuum pump operation to maximum functional duration.
S307: judge whether the current vacuum degree of system is less than or equal to the closing threshold values of electric vacuum pump again.
If so, thening follow the steps S308；If it is not, then return step S310.
S308: judge whether the current vacuum degree of system is less than or equal to system leak and differentiates threshold values.
If so, thening follow the steps S309；If not, thening follow the steps S312.
S309: judge whether the current vacuum degree of system is less than or equal to the unlatching threshold values of electric vacuum pump.
If so, thening follow the steps S314；If not, thening follow the steps S313.
S310: judge whether the current vacuum degree of system reaches first default time more than or equal to the number of the first threshold values
Number.
If so, thening follow the steps S311；If it is not, then return step S301.
S311: enter and make a concession drive mode.
S312: determine that system minuent leaks, and return step S301.
S313: carrying out leakiness alarm, and controls electric vacuum pump and run in the safe mode and return step
S307。
S314: leakiness alarm is carried out, and torque limit, and control electricity are carried out to the control motor of electric vacuum pump
Dynamic vacuum pump is run in the safe mode.
Further, according to one embodiment of present invention, real-time statistics are electronic in the operational process of electric vacuum pump
Before the accumulative operation duration of vacuum pump, further includes: the atmospheric value for obtaining current environment, according to the atmospheric value that gets and
The corresponding threshold coefficient of each leak judgement threshold values, obtains the leak judgement threshold values of current environment.Wherein, leak judgement threshold values packet
Include the threshold values of the first threshold values and multiple leakage class.
Further, obtaining current environment atmospheric value includes: the voltage signal for acquiring atmosphere pressure sensor output, is sentenced
Whether disconnected voltage signal exceeds preset range, is adjusted when voltage signal exceeds preset range to voltage signal, according to place
In the voltage signal or voltage signal adjusted of preset range, atmospheric value is obtained.
That is, above-mentioned first threshold values, the second threshold values and third threshold values can be counted by present air atmospheric value
It obtains.
Specifically, it can be detected by atmosphere pressure sensor, then acquire the voltage signal of atmosphere pressure sensor output,
Judge whether voltage signal exceeds preset range, if voltage signal exceeds preset range, voltage signal is adjusted, is made
The normal operation for not influencing vehicle, wherein Backup can be enabled to voltage signal adjustment and substitute this beyond preset range
Voltage signal, then will be fitted calculating in preset range voltage signal or voltage signal adjusted, and acquisition meets work
The atmospheric value of the current environment of Cheng Yiyi, it is finally again that the atmospheric value of current environment and each leak judgement threshold values is corresponding
Threshold coefficient is calculated, and the leakage decision threshold of corresponding current environment, i.e. the first threshold values, the second threshold values and third valve are obtained
Value.
It should be noted that between the leakage decision threshold for the current environment being calculated and the atmospheric value of current environment
Mapping function be linear function.
As a result, by obtaining the atmospheric value of current environment and obtaining letting out for current environment by current environment atmospheric pressure
Decision threshold is leaked, so as to make leak judgement threshold values meet the currently running environment of vehicle, that is, not for ambient atmosphere pressure value
Same area uses different leak judgement threshold values, to avoid generating system leakage erroneous judgement, the standard that lifting system leakage judges
True property improves the safety of vehicle operation.
To sum up, the method for detection Motorized vacuum bump leakage according to an embodiment of the present invention, passes through the fortune in electric vacuum pump
The accumulative operation duration of real-time statistics electric vacuum pump during row, and when accumulative operation duration reaches the maximum functional of permission
When long, if current vacuum degree is less than the first threshold values, it is determined that Motorized vacuum pumping system is in leak condition.This hair as a result,
The detection method of bright embodiment is capable of detecting when whether Motorized vacuum pumping system leaks, so that the safety of vehicle operation be effectively ensured
Property
In order to realize above-described embodiment, the present invention also proposes a kind of device for detecting electric vacuum pump system leak.
Fig. 3 is the block diagram of the device of the detection electric vacuum pump system leak of the embodiment of the present invention.Such as Fig. 3 institute
Show, the device 100 of the detection electric vacuum pump system leak includes: statistical module 10 and judgment module 20.
Wherein, accumulative fortune of the statistical module 10 for the real-time statistics electric vacuum pump in the operational process of electric vacuum pump
Row duration；Judgment module 20 is used for when accumulative operation duration reaches the maximum functional duration allowed, according to electric vacuum pump system
The vacuum degree for uniting current and preset first threshold values, judge whether Motorized vacuum pumping system is in leak condition；And current
Vacuum degree less than the first threshold values when, determine that Motorized vacuum pumping system is in leak condition.
Further, it in a kind of possible implementation of the embodiment of the present invention, is determining at Motorized vacuum pumping system
After leak condition, judgment module 20 is also used to: the threshold values of current vacuum degree and preset multiple leak conditions is carried out
Compare, determine threshold range locating for current vacuum degree, and then determines the leakage class of Motorized vacuum pumping system.
Further, after the leakage class for determining Motorized vacuum pumping system, judgment module 20 is also used to: working as determination
When the leakage class of Motorized vacuum pumping system is the second leakage class out, using tactful with the matched alarm of the second leakage class,
Leakiness alarm is carried out, and controls electric vacuum pump and runs in the safe mode.
Further, safe mode using set duty cycle operation and after operation rest preset time interval as
Operating condition recycles according to preset work times and executes operating condition.
Further, after control electric vacuum pump is run in the safe mode, judgment module 20 is also used to: in safe mould
After formula end of run, continue to return execution according to the current vacuum degree of Motorized vacuum pumping system and preset first threshold values, judgement
Whether Motorized vacuum pumping system is in leak condition；If current vacuum degree is more than or equal to the first threshold values, update is worked as
Preceding vacuum degree is greater than the number of the first threshold values；And reach in the number that current vacuum degree is more than or equal to the first threshold values
When the first preset times, control electric vacuum pump, which executes, makes a concession driving operating mode.
Further, after the leakage class for determining Motorized vacuum pumping system, judgment module 20 is also used to: working as determination
Out the leakage class of Motorized vacuum pumping system be third leakage class when, using with third leakage ratings match alarm strategy,
Leakiness alarm is carried out, and torque limit, and control electric vacuum pump are carried out to pacify to the control motor of electric vacuum pump
Syntype operation.
Further, according to the current vacuum degree of Motorized vacuum pumping system and the first threshold values, judge electric vacuum pump system
Whether before leak condition, judgment module 20 is also used to system:, will be electric when accumulative operation duration reaches and works normally duration
The current vacuum degree of dynamic vacuum pump system is compared with the first threshold values, if current vacuum degree controls electricity less than the first threshold values
Dynamic vacuum pump, which works on, reaches maximum functional duration to accumulative operation duration.
Further, in the operational process of electric vacuum pump real-time statistics electric vacuum pump accumulative operation duration it
Before, judgment module 20 is also used to: obtaining the atmospheric value of current environment；Determined according to the atmospheric value got and each leakage
The corresponding threshold coefficient of threshold values obtains the leakage decision threshold of current environment, wherein leak judgement threshold values include the first threshold values and
The threshold values of multiple leakage class.
Further, judgment module 20 is also used to: the voltage signal of acquisition atmosphere pressure sensor output；Judge voltage signal
Whether exceed preset range, and voltage signal is adjusted when voltage signal exceeds preset range；According in default model
The voltage signal or voltage signal adjusted enclosed obtains atmospheric value.
It should be noted that the explanation of the aforementioned embodiment of the method to detection electric vacuum pump system leak is also suitable
In the device of the detection electric vacuum pump system leak of the embodiment, details are not described herein again.
In order to realize above-described embodiment, the present invention also proposes another electronic equipment, including memory, processor and storage
On a memory and the computer program that can run on a processor, when processor executes program, realize that detection above-mentioned is electronic
The method of vacuum pump system leakage.
In order to realize above-described embodiment, the present invention also proposes a kind of non-transitorycomputer readable storage medium, deposits thereon
Computer program is contained, which realizes detection electric vacuum pump system leak above-mentioned method when being executed by processor.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (10)
1. a kind of method for detecting electric vacuum pump system leak, which comprises the following steps:
The accumulative operation duration of electric vacuum pump described in real-time statistics in the operational process of electric vacuum pump；
When the accumulative operation duration reaches the maximum functional duration of permission, according to current true of the Motorized vacuum pumping system
Reciprocal of duty cycle and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；
If the current vacuum degree is less than first threshold values, it is determined that the Motorized vacuum pumping system is in leakage shape
State.
2. the method for detection electric vacuum pump system leak according to claim 1, which is characterized in that described in the determination
Motorized vacuum pumping system is in after leak condition, further includes:
The current vacuum degree is compared with the threshold values of preset multiple leak conditions, determines the current vacuum degree
Locating threshold range, and then determine the leakage class of the Motorized vacuum pumping system.
3. the method for detection electric vacuum pump system leak according to claim 2, which is characterized in that determined described
After the leakage class of the Motorized vacuum pumping system, further includes:
When determine the Motorized vacuum pumping system leakage class be the second leakage class when, using with it is described second leakage etc.
The matched alarm strategy of grade, carries out leakiness alarm, and control the electric vacuum pump and run in the safe mode.
4. the method for detection electric vacuum pump system leak according to claim 3, which is characterized in that the safe mode
It is run using the duty cycle of setting and rests preset time interval as operating condition after operation, followed according to preset work times
Ring executes the operating condition.
5. the method for detection electric vacuum pump system leak according to claim 3, which is characterized in that in the control institute
It states after electric vacuum pump runs in the safe mode, further includes:
After the safe mode end of run, continue to return to the execution vacuum current according to the Motorized vacuum pumping system
Degree and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；
If the current vacuum degree is more than or equal to first threshold values, current vacuum degree is updated greater than the first valve
The number of value；And
When the number that the current vacuum degree is more than or equal to the first threshold values reaches the first preset times, the electricity is controlled
Dynamic vacuum pump, which executes, makes a concession driving operating mode.
6. the method for detection electric vacuum pump system leak according to claim 2, which is characterized in that determined described
After the leakage class of the Motorized vacuum pumping system, further includes:
When determine the Motorized vacuum pumping system leakage class be third leakage class when, using with the third leakage etc.
The matched alarm strategy of grade, carries out leakiness alarm, and carry out torque limit to the control motor of the electric vacuum pump, with
And the control electric vacuum pump is run in the safe mode.
7. the method for detection electric vacuum pump system leak according to claim 1, which is characterized in that described according to institute
The current vacuum degree of Motorized vacuum pumping system and the first threshold values are stated, judges whether the Motorized vacuum pumping system is in leak condition
Before, further includes:
When the accumulative operation duration reaches and works normally duration, by the current vacuum degree of the Motorized vacuum pumping system and institute
The first threshold values is stated to compare,
If the current vacuum degree is less than first threshold values, controls the electric vacuum pump and work on to described tired
It counts operation duration and reaches the maximum functional duration.
8. the method for detection electric vacuum pump system leak according to claim 1, which is characterized in that in electric vacuum pump
Operational process in electric vacuum pump described in real-time statistics accumulative operation duration before, further includes:
Obtain the atmospheric value of current environment；
According to the atmospheric value and the corresponding threshold coefficient of each leakage decision threshold got, the current environment is obtained
Leakage decision threshold, wherein leak judgement threshold values includes the threshold values of the first threshold values and multiple leakage class.
9. the method for detection electric vacuum pump system leak according to claim 8, which is characterized in that described to obtain currently
Ambient atmosphere pressure value, comprising:
Acquire the voltage signal of atmosphere pressure sensor output；
Judge whether the voltage signal exceeds preset range, and when the voltage signal exceeds preset range to the voltage
Signal is adjusted；
According to the voltage signal or voltage signal adjusted for being in the preset range, the atmospheric value is obtained.
10. a kind of device for detecting electric vacuum pump system leak characterized by comprising
Statistical module, when accumulative operation for electric vacuum pump described in the real-time statistics in the operational process of electric vacuum pump
It is long；
Judgment module, for when the accumulative operation duration reaches the maximum functional duration allowed, according to the Motorized vacuum
The current vacuum degree of pumping system and preset first threshold values, judge whether the Motorized vacuum pumping system is in leak condition；With
And when the current vacuum degree is less than first threshold values, determine that the Motorized vacuum pumping system is in leak condition.
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