CN105774691A - Parking auxiliary system for vehicle and corresponding vehicle - Google Patents
Parking auxiliary system for vehicle and corresponding vehicle Download PDFInfo
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- CN105774691A CN105774691A CN201410815318.5A CN201410815318A CN105774691A CN 105774691 A CN105774691 A CN 105774691A CN 201410815318 A CN201410815318 A CN 201410815318A CN 105774691 A CN105774691 A CN 105774691A
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Abstract
The invention provides a parking auxiliary system for a vehicle. According to the parking auxiliary system for the vehicle, the parking auxiliary system comprises a control unit. The control unit is configured to implement a parking function for parking the vehicle in a parking space. The control unit is further configured to confirm and/or monitor the tire pressure of at least one tire of the vehicle. The invention further provides the vehicle comprising the parking auxiliary system. According to the control unit of the parking auxiliary system for the vehicle and the vehicle, the parking function for parking the vehicle in the parking space can be implemented, and the tire pressure of at least one tire of the vehicle can also be confirmed and/or monitored, so that the parking auxiliary system has double functions, an additionally-arranged tire pressure monitoring system is omitted, and the cost of the vehicle is reduced.
Description
Technical field
The present invention relates to field of vehicle control, more specifically, relate to a kind of parking assistance system for vehicle and a kind of corresponding vehicle.
Background technology
Among prior art, DE102010007650 discloses a kind of for using range data and the wheel pulse data method to determine the current wheel circumference of vehicle, wherein, current wheel circumference is determined based on determined range difference and corresponding wheel pulse number.But, DE102010007650 unexposed corresponding system for monitoring pressure in tyre (TPMS:TirePressureMonitoringSystem).
Known system for monitoring pressure in tyre consists essentially of following two type:
The first system for monitoring pressure in tyre is called " directly " system for monitoring pressure in tyre, and it is costly.The system for monitoring pressure in tyre being somebody's turn to do " directly " has specific tyre pressure testing quantity sensor on each wheel.Such as, a kind of method of girth for updating wheel being stored among control unit disclosed in DE102012219569A1.Disclose this vehicle in fig. 2 and there is the wheel pressure sensors 34 being arranged among wheel.Tire pressure sensor 34 is wirelessly coupled to control unit 12 by receptor 38.The measured value of tire pressure sensor is transmitted to receptor 38 by radio wave 36, and this measured value is transmitted to control unit 12 by this receptor via CAN 40.Being used in the measured value of tire pressure among each wheel 20, this control unit 20 can determine a corrected value based on stored wheel circumference initial value.This control unit 12 uses this corrected value can more be newly stored in the wheel circumference among control unit 12.
The system for monitoring pressure in tyre of the second type is called the system for monitoring pressure in tyre of " indirectly ", and it more offsets.Such as, a kind of method of pressure loss for detecting in automobile tyre disclosed in US2010/0063665A1, it pressure loss including the change of the detection rolling circumference due to one or more tire on vehicle wheel and indicating；Rolling circumference according to one or more tire calculates the parameter that at least two is different in a different manner；And the parameter assessing two above different detects the pressure loss (referring to claim 9) at least one vehicle tyre.Specifically, it is possible to calculate these parameters (referring to claim 11) according at least one in speed or wheel torque.Among another example, the system of the tire pressure loss of a kind of vehicle for detecting among operating disclosed in DE102005049442A1, it includes the device of the rotating speed for detecting each wheel.When constant car speed, based on measured vehicle wheel rotational speed, the variable ratio-dependent of girth is used for limiting the current driving distance of each independent wheel.Then, will make comparisons with stored reference value with the variable ratio of girth.
Additionally, US2009/0125181 discloses a kind of for parking or the method for auxiliary driver during operating motor vehicles, this motor vehicles at least has a kind of driver assistance system and Vehicle security system, and the method comprises the following steps: a) detect surrounding；And among computation model, b) calculate desired path, wherein, Vehicle security system will be relied on to monitor and determine the difference on operating range between the single wheel of this motor vehicles, and by using the difference on operating range implemented by driver assistance system and desired path being predicted in the detection of surrounding among computation model.Especially, by using at least one Vehicle security system the corresponding wheel rolling girth of at least one wheel is defined as the operating range of wheel and assesses the wheel rolling girth of determined single wheel so that the difference found out between wheel rolling girth.Specifically, the difference of the wheel rolling girth between single wheel can be monitored by the Vehicle security system including indirect tire inflation pressure determining system, anti-lock braking system (ABS), ESP (ESP) system or the combination between them.
Summary of the invention
The parking assistance system that difference with the prior art of the present invention is in that to not a half autonomy (mean semi-autonomous or entirely autonomous) is with the control unit with parking function (such as calculate and vehicle stops the parking trajectory into parking space), and described control unit is also used for determining tire pressure and for monitoring tire pressure (such as determining that tire pressure loses).Therefore, according to the present invention, tire pressure monitoring function is implemented among the control unit of described parking assistance system too.More cheap parking assistance system can be provided by this way.
A first aspect of the present invention proposes a kind of parking assistance system for vehicle, it is characterised in that including:
-control unit, it is configured to implement described vehicle is stopped the parking function into parking space,
Wherein, described control unit is additionally configured to determine and/or monitor the tire pressure of at least one tire of described vehicle.
Can either implement described vehicle is stopped the parking function into parking space according to the control unit for the parking assistance system of vehicle of the present invention, it also is able to determine and/or monitor the tire pressure of at least one tire of described vehicle, so that there is dual-use function according to the parking assistance system of the present invention, so just save the tire pressure monitoring system arranged separately and then reduce the cost of vehicle.
According among one embodiment of the present of invention, described control unit is additionally configured to determine that tire pressure loses.
Specifically, the tire pressure monitoring at least one tire of described vehicle includes determining whether this tire exists the pressure loss, and then calculates offer information of vehicles more accurately for follow-up parking trajectory.
According to, among one embodiment of the present of invention, determining the described parking function of control unit described in the situation deactivating of described tire pressure loss.
It is prevented from by this way causing that original parking function cannot correctly perform due to vehicle tyre pressure loss.
According to, among one embodiment of the present of invention, implementing the described parking function of described control unit in the parking trajectory computing interval by the mode of compensation flat when determining the loss of described tire pressure.
Driving trace can be revised by this way, thus correctly implementing original parking function by the mode of compensation flat.
According among one embodiment of the present of invention, the signal that described control unit is arranged to according to transmitting from the anti-lock braking system of described vehicle determines tire pressure.
According among one embodiment of the present of invention, the signal that described control unit is arranged to according to transmitting from the anti-lock braking system of described vehicle implements described parking function.
This control unit can be implemented as electronics performance element (ECU), and it can determine tire pressure according to the signal that the anti-lock braking system from described vehicle is transmitted.Additionally, as previously mentioned, this electronics performance element can also implement described parking function according to the signal that the anti-lock braking system from described vehicle is transmitted.Thus achieving the electronics performance element for indirectly monitoring vehicle tyre pressure and for implementing the multiplexing of the electronics performance element of parking function, thus reducing the manufacturing cost of the control unit of vehicle, and then reducing the manufacturing cost of vehicle.
According among one embodiment of the present of invention, described control unit is configured to CAN and receives the described signal transmitted from described anti-lock braking system.
CAN is a kind of conventional bus in vehicle, and those skilled in the art is it is to be appreciated that other suitable buses are also feasible, for instance LIN bus etc..
According among one embodiment of the present of invention, described signal is wheel pulse data and described wheel pulse data include rear left wheel velocity pulse, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse.
Wheel velocity can be calculated based on the wheel pulse data of received such as rear left wheel velocity pulse, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse according to the control unit of the present invention and implement parking function and tire pressure monitoring function accordingly.
According to, among one embodiment of the present of invention, implementing parking function and include calculating the parking trajectory for the described vehicle that stops among described parking space.
According among one embodiment of the present of invention, described parking assistance system is at least half autonomous parking assistance system.Those skilled in the art is it is to be appreciated that also be able to as complete autonomous parking assistance system according to the parking assistance system of the present invention.
According among one embodiment of the present of invention, described control unit implements range finding, and described range finding is configured to calculate wheel speed data and for implementing parking function.
By this way, it is possible to calculate wheel speed data by means of range unit and correspondingly implement parking function, thus optimizing the structure of vehicle.
A second aspect of the present invention proposes a kind of vehicle, it is characterised in that described vehicle includes parking assistance system described according to the first aspect of the invention.
Parking function and tire pressure monitoring function can be implemented in same control unit according to the vehicle including aforesaid parking assistance system of the present invention, achieve the highly integrated of corresponding function, and then be conducive to optimizing structure and the manufacturing cost of control unit for vehicle.
Accompanying drawing explanation
After the description below with reference to the specific embodiment of the present invention given by drawings below, it is better understood with the present invention, and other purposes of the present invention, details, feature and advantage will become apparent from.In the accompanying drawings:
Fig. 1 illustrates the structural representation Figure 100 according to the control unit in the vehicle of prior art；And
Fig. 2 illustrates the block diagram 200 of the control unit in vehicle according to the invention.
Wherein, in various figures, same or analogous accompanying drawing labelling indicates same or analogous function or element.
Detailed description of the invention
It is more fully described the preferred embodiment of the present invention below with reference to accompanying drawings.Although accompanying drawing shows the preferred embodiment of the present invention, however, it is to be appreciated that may be realized in various forms the present invention and should do not limited by embodiments set forth herein.On the contrary, it is provided that these embodiments are to make the present invention more thorough and complete, and complete for the scope of the present invention can be conveyed to those skilled in the art.
Fig. 1 illustrates the structural representation Figure 100 according to the control unit in the vehicle of prior art.As can be seen from the figure, CAN is connected to three modules, respectively the electronics performance element (ABS) 130 of the half autonomous electronics performance element (SAPAS) 110 of parking assistance system, the electronics performance element (indirect TPMS) 120 of indirect tire pressure monitoring system and anti-lock braking system.Operationally, the signal of the such as rear left wheel velocity pulse of transmission, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse on CAN that the electronics performance element 110 of half autonomous parking assistance system provides according to the electronics performance element 130 of anti-lock braking system implements parking function to such structure；And the signal of the such as rear left wheel velocity pulse of transmission, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse on CAN that indirectly the electronics performance element 120 of tire pressure monitoring system provides also according to the electronics performance element 130 of anti-lock braking system implements indirectly tire pressure monitoring function.Such half autonomous parking assistance system and indirectly tire pressure monitoring function carry out respectively among different separate two electronics performance elements, and the such as rear left wheel velocity pulse of transmission on CAN that the electronics performance element 130 of the signal such as anti-lock braking system of institute's foundation provides, right rear wheel velocity pulse, the signal of front left wheel velocity pulse and/or right front wheel velocity pulse is then identical, so just the expense on the hardware of such as two separate electronics performance elements and the waste of the computing capability of electronics performance element not being fully utilized unnecessarily are brought.
For the structure of the prior art shown in Fig. 1, the present invention proposes a kind of optimized control unit structure, and Fig. 2 illustrates the block diagram 200 of the control unit in vehicle according to the invention.As can be seen from the figure, control unit 210 is included according to the parking assistance system 200 for vehicle of the present invention, it is configured to implement to stop vehicle the parking function into parking space, wherein, this control unit 210 is additionally configured to determine and/or monitor the tire pressure of at least one tire of vehicle.
Specifically, the described control unit of described parking assistance system is run (being namely constantly in open mode) constantly, as long as described vehicle opens (can merely turn on described park assist sensor when activating car-parking model).Owing to described control unit is run constantly, so described tire pressure monitoring function can be run constantly when described vehicle is opened.
Can either implement to stop vehicle the parking function into parking space according to the control unit for the parking assistance system of vehicle of the present invention, it also is able to determine and/or monitor the tire pressure of at least one tire of vehicle, so that there is dual-use function according to the parking assistance system of the present invention, so just save the tire pressure monitoring system arranged separately and then reduce the cost of vehicle.
According among one embodiment of the present of invention, control unit is additionally configured to determine that tire pressure loses.Specifically, the tire pressure monitoring at least one tire of described vehicle includes determining whether this tire exists the pressure loss, and then calculates offer information of vehicles more accurately for follow-up parking trajectory.
Alternatively, the described parking function of control unit described in the situation deactivating of described tire pressure loss is being determined.It is prevented from by this way causing that original parking function cannot correctly perform due to vehicle tyre pressure loss.
Alternatively, the described parking function of described control unit is implemented in the parking trajectory computing interval by the mode of compensation flat when determining the loss of described tire pressure.Driving trace can be revised by this way, thus correctly implementing original parking function by the mode of compensation flat.
According among one embodiment of the present of invention, the signal that described control unit is arranged to according to transmitting from the anti-lock braking system of described vehicle determines tire pressure.Specifically, the signal that control unit is arranged to according to transmitting from the anti-lock braking system of described vehicle implements described parking function.This control unit can be implemented as electronics performance element (ECU), and it can determine tire pressure according to the signal that the anti-lock braking system from described vehicle is transmitted.Additionally, as previously mentioned, this electronics performance element can also implement described parking function according to the signal that the anti-lock braking system from described vehicle is transmitted.Thus achieving the electronics performance element for indirectly monitoring vehicle tyre pressure and for implementing the multiplexing of the electronics performance element of parking function, thus reducing the manufacturing cost of the control unit of vehicle, and then reducing the manufacturing cost of vehicle.
Alternatively, control unit is configured to CAN and receives the described signal transmitted from described anti-lock braking system.CAN is a kind of conventional bus in vehicle, and those skilled in the art is it is to be appreciated that other suitable buses are also feasible, for instance LIN bus etc..
Specifically, above-mentioned signal is wheel pulse data and described wheel pulse data include rear left wheel velocity pulse, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse.Wheel velocity can be calculated based on the wheel pulse data of received such as rear left wheel velocity pulse, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse according to the control unit of the present invention and implement parking function and tire pressure monitoring function accordingly.
Preferably, implement parking function to include among described parking space, calculate the parking trajectory for the described vehicle that stops.It is further preferable that parking assistance system is at least half autonomous parking assistance system.Those skilled in the art is it is to be appreciated that also be able to as complete autonomous parking assistance system according to the parking assistance system of the present invention.
Alternatively, this control unit implements range finding, and described range finding is configured to calculate wheel speed data and for implementing parking function.By this way, it is possible to calculate wheel speed data by means of range unit and correspondingly implement parking function, thus optimizing the structure of vehicle.
Additionally, the invention allows for a kind of vehicle, this vehicle includes the parking assistance system according to the present invention.Parking function and tire pressure monitoring function can be implemented in same control unit according to the vehicle including aforesaid parking assistance system of the present invention, achieve the highly integrated of corresponding function, and then be conducive to optimizing structure and the manufacturing cost of control unit for vehicle.
Those of ordinary skill in the art it is also understood that the various exemplary logical block, unit and the method step that describe in conjunction with embodiments herein can be implemented as electronic hardware or computer software, is even embodied as the combination of the two.In order to clearly show that this interchangeability between hardware and software, above-mentioned various exemplary parts, unit and method step have all carried out general description around its function.It is implemented as hardware as this function and is also implemented as software, depend on specific application and apply design constraint over the whole system.Those skilled in the art for every kind of application-specific, can realize described function in the way of flexible, but, this realize decision-making and should not be construed as and deviate from protection scope of the present invention.
The above description of the present invention is for making any those of ordinary skill of this area be capable of or use the present invention.To those skilled in the art, the various amendments of the present invention or deformation will be apparent from, and general principle defined herein can also be applied to other deformation when without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention is not limited to example as herein described and design, but consistent with the widest scope of principle disclosed herein and novel features.
Claims (12)
1. the parking assistance system (200) for vehicle, it is characterised in that including:
-control unit (210), it is configured to implement described vehicle is stopped the parking function into parking space,
Wherein, described control unit (210) is additionally configured to determine and/or monitor the tire pressure of at least one tire of described vehicle.
2. parking assistance system according to claim 1 (200), it is characterised in that described control unit (210) is additionally configured to determine that tire pressure loses.
3. parking assistance system according to claim 2 (200), it is characterised in that determining the described parking function of control unit (210) described in the situation deactivating of described tire pressure loss.
4. parking assistance system according to claim 2 (200), it is characterized in that, implement the described parking function of described control unit (210) in the parking trajectory computing interval by the mode of compensation flat when determining the loss of described tire pressure.
5. parking assistance system according to any one of claim 1 to 4 (200), it is characterized in that, the signal that described control unit (210) is arranged to according to transmitting from the anti-lock braking system (230) of described vehicle determines tire pressure.
6. parking assistance system according to claim 5 (200), it is characterized in that, the signal that described control unit (210) is arranged to according to transmitting from the anti-lock braking system (230) of described vehicle implements described parking function.
7. the parking assistance system (200) according to claim 5 or 6, it is characterized in that, described control unit (210) is configured to CAN (240) and receives the described signal transmitted from described anti-lock braking system (230).
8. the parking assistance system (200) according to any one of claim 5 to 7, it is characterized in that, described signal is wheel pulse data and described wheel pulse data include rear left wheel velocity pulse, right rear wheel velocity pulse, front left wheel velocity pulse and/or right front wheel velocity pulse.
9. parking assistance system according to any one of claim 1 to 8 (200), it is characterised in that implement parking function and include calculating the parking trajectory for the described vehicle that stops among described parking space.
10. parking assistance system according to any one of claim 1 to 9 (200), it is characterised in that described parking assistance system (200) is at least half autonomous parking assistance system.
11. parking assistance system according to any one of claim 1 to 10 (200), it is characterized in that, described control unit (210) implements range finding, and described range finding is configured to calculate wheel speed data and for implementing parking function.
12. a vehicle, it is characterised in that described vehicle includes the parking assistance system (200) according to any one of claim 1 to 11.
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| CN201410815318.5A CN105774691A (en) | 2014-12-23 | 2014-12-23 | Parking auxiliary system for vehicle and corresponding vehicle |
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| CN201410815318.5A CN105774691A (en) | 2014-12-23 | 2014-12-23 | Parking auxiliary system for vehicle and corresponding vehicle |
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| CN105774691A true CN105774691A (en) | 2016-07-20 |
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