• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ll Abstract An apparatus and a method for Waking up at least an electronic brake system,EBS, (10) of a vehicle (1). The EBS (10) comprises a parking brake, at least oneservice brake and an anti compound functionality. The apparatus (1 1) comprisesa seat occupation sensor (6) configured to generate an occupation signalindicating if a person is sitting on a driver's seat (3) in the vehicle (1 ), and a wake-up unit (9) that is configured to be powered from a battery (10). The wake-up unit(9) is further configured to receive the occupation signal, generate a wake-upsignal ß if the person is sitting on the seat (3), and to send the wake-up signal ßto the EBS (10) of the vehicle (1), whereby the EBS (10) is powered andactivated. (Fig. 1)
    公开号:SE1451526A1
    申请号:SE1451526
    申请日:2014-12-11
    公开日:2016-06-12
    发明作者:Lindqvist Arne
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Apparatus and method for waking up an electronic brake system of a vehicleTechnical fieldThe present invention relates to an apparatus and a vehicle for waking up at leastan electronic brake system, EBS, of a vehicle, and a vehicle comprising the apparatus.
    BackgroundA brake system of a vehicle includes different kinds of brakes, for example aparking brake and a service brake such as a foot brake. When the vehicle isstanding still and the parking brake is actuated, the foot brake pedal should not betotally depressed to avoid overload in mechanical parts of the brake system.Simultaneous application of the parking brake and the service brake is calledbrake compounding.
    To protect against damage to the brake system caused by brake compounding,anti compounding is used. Anti compounding is a method to prevent simultaneousapplication of parking brake forces and service brake forces to a slack adjuster ofthe brake system. A slack adjuster is the link between a brake chamber oractuator, and a foundation brake camshaft. lt transforms and multiplies the forcedeveloped by the chamber into a torque which applies the brakes via the brakecamshaft. The anti compounding may prevent simultaneous operation of thebrakes by directing application air of the braking system to the parking brakeswhen both brakes are applied at once.
    A vehicle with a pneumatically actuated brake system has an anti compoundsolution comprising a pneumatically actuated system. When the brake system iselectrically actuated, thus an EBS (Electronic Brake System), the anti compoundsolution comprises an electrically actuated system that will limit the pressure onthe service brake, i.e. a foot brake, even if the driver fully depress the foot brakepedal. However, an electrically actuated system requires power to function andwhen the vehicle is shut off, the EBS system cannot be actuated.2The EBS system has a wake up time, and depressing of the foot brake pedalwhile the vehicle is shut off may cause brake compounding. After a certain timethe EBS system may be wakened by the actuation of the foot brake, whereby anticompounding can be achieved. The time period of brake compounding mayhowever cause breakage of mechanical parts of the brake system.ln US20130151102 a brake signal controliing system is disclosed. The systemmay include a wake-up unit to selectively operate an ESC (Electronic StabilityControl) system, such that starting and stopping of the vehicle can be normallyperformed when the engine of the vehicle is stopped. A seatbelt switch and a doorswitch transmit signals to a wake-up generator that supplies a voltage for theoperation of the wake-up unit. However, a brake system may be actuated withoutusing a seatbelt or without previously actuating the door.
    Summarylt is an object of the present invention to alleviate at least some of the drawbackswith prior art. lt is a further object to provide an improved anti compound functionfor a vehicle with an electronic brake system of a vehicle.
    This object and others are at least partly achieved by the apparatus, method andvehicle according to the independent claims, and by the embodiments accordingto the dependent claims.
    The apparatus is arranged for waking up at least an electronic brake system,EBS, of a vehicle. The EBS comprises a parking brake, at least one service brakeand an anti compound functionality. The apparatus comprises a seat occupationsensor configured to generate an occupation signal indicating if a person is sittingon a driver's seat in the vehicle. The apparatus further comprises a wake-up unitthat is configured to be powered from a battery. The wake-up unit is furtherconfigured to receive the occupation signal, generate a wake-up signal ß if theperson is sitting on the seat, and send the wake-up signal ß to the EBS of thevehicle, whereby the EBS is powered and activated.
    The apparatus ascertains a working anti compound function for a vehicle withEBS, even if the vehicle is not yet started. As soon as the person is sitting on thedriver's seat, the EBS is awakened, and the anti compound function startsworking. lt is thereby secured that both the parking brake and the service brakeare not applied at the same time. Thus, even if a driver has been sleeping in thevehicle and does not open the door before using the service brake or use thesecurity belt, the anti compounding function is activated even if the vehicle is notyet started. Starting the vehicle here means that the car-key is turned.
    According to one embodiment, the wake-up unit is configured to generate a wake-up signal ß as long as the person is sitting on the driver”s seat.
    According to one embodiment, the wake-up unit is further configured to send thewake-up signal ß to an accessory unit of the vehicle, whereby the accessory unitis powered. Thus, also other kinds of functions may be powered and activatedbased on that it is detected that a person is sitting in the driver”s seat.
    The disclosure also relates to a vehicle arranged with an electronic brake system,EBS, with a parking brake, at least one service brake and an anti compoundfunctionality, wherein the vehicle comprises an apparatus according to any ofembodiments disclosed herein.
    Brief description of the drawinqsFig. 1 shows a truck arranged with an electronic brake system, EBS, and anapparatus for waking up the EBS according to the disclosure.
    Fig. 2 schematically illustrates the apparatus for waking up the EBS in greaterdetail, and some units that may cooperate with, or be included in, the apparatus insome embodiments.
    Fig. 3 illustrates a flow chart of a method for waking up at least the EBS of thevehicle.
    Detailed descriptionFig. 1 illustrates a vehicle 1 in the shape of a truck With a driver's cabin 2. Thevehicle 1 is arranged With an Electronic Brake System, EBS, 10. The EBS 10comprises several braking components such as a parking brake, at least oneservice brake and an anti compounding functionality. The service brake is theprimary braking system of the vehicle 1. The service brake is typically operated byfoot and is mechanically separated from the parking brake. The service brake maycomprise disk or drum brakes or a combination of the two. The anti compoundingfunctionality prevents simultaneous operation of the parking brake and the servicebrake e.g. by directing application air of the EBS 10 to the parking brakes Whenboth brakes are applied at once. The braking components of the EBS 10 arefurthermore electrically activated. However, the parking brake may be activatedeven if the vehicle 1 is not started.ln the driver's cabin 2 there is arranged among all a driver's seat 3 and a steeringWheel 4. Various other accessory devices such as radio; lightning system such asinstrument panel lightning, indoor lightning, outdoor lightning; heating devices forpre Warming of engine or cabin 2, extra Warming, seat Warming; a GPS-unit(Global Positioning System) or other positioning unit, etc may also be arranged inthe vehicle 1. These devices are schematically denoted by a device 7 in theinstrument panel and it should be understood that the named devices may belocated at another place in the vehicle 1.
    The vehicle 1 is further arranged With an apparatus 11 comprising a Wake-up unit9 that is configured to be powered from a battery 8, and a seat occupation sensor5, 6. The Wake up unit 9 may be part of an Electronic Control Unit (ECU) of thevehicle 1. The seat occupation sensor 5, 6 is configured to generate anoccupation signal indicating if a person is sitting on a driver's seat 3 in the vehicle1. The seat occupation sensor 5, 6 may for example be a pressure sensor 5 orforce sensor 5 arranged to the drivers seat 3 and arranged to monitor if a personis sitting in the seat 3 or not. lf the driver”s seat 3 is arranged With a heightadjustment system (not shown) with compressed air or With springs, the seat5occupation sensor 5, 6 may be arranged to sense the pressure change or springload change of the height adjustment system. lf a person is sitting on the driversseat 3 the weight of the person will put a load on the height adjustment systemwhich may then be sensed.
    The seat occupation sensor 5, 6 may instead be a camera unit or video unit 6arranged to monitor the drivers seat 3 to detect if a person is sitting in or standingin front of the driver's seat 3 or not. The camera unit 5 or video unit 6 may bearranged to monitor any presence of a person on or in front of the driver's seat 3.
    The seat occupation sensor 5, 6 may also be a heat radiation detector 6configured to sense heat radiation from a person sitting in or standing in front ofthe driver's seat 3 in the vehicle 1.
    Fig. 2 is illustrating the apparatus 11 and parts that the apparatus 11 may be incommunication with in various embodiments in greater detail. The apparatus 11comprises the wake-up unit 9 that is configured to be powered from the battery 8.The wake-up unit 9 and the battery 8 are for that purpose connected by wire. Thebattery 8 is configured to continuously transfer power to the wake-up unit 9, suchthat the wake-up unit 8 is continuously activated. As previously stated, the wake-up unit 8 may be part of an ECU, but the whole ECU does not have to be poweredeven though the wake-up unit 8 is powered.
    The status of the driver's seat is continuously monitored by the seat occupationsensor or sensors 5, 6. The seat occupation sensor or sensors 5, 6 is/areconfigured to generate an occupation signal and send the signal to the wake-upunit 9. The occupation signal may comprise raw data such as a pressure level, aforce level or a heat radiation level. The wake-up unit 9 may then be configured tocompare the level with a previously detected level, and to determine if there is achange of the level. The change should according to one embodiment be greaterthan a certain constant depending of the detected unit to determine that there is aperson sitting in the driver”s seat 3. Alternatively the seat occupation senor 5, 66may be configured to make that determination in the seat occupation sensor 5, 6itself. lf there is a change of the detected level, e.g. greater than the certainconstant, the occupation signal may comprise that data. The data may e.g.include a flag or a “1 ” if it is determined that a person is sitting in the seat 3, or a“O” if it determined that no person is sitting in the seat 3. The wake-up unit 9 maythen be configured to receive the occupation signal with the data, and if itcomprises a flag or a "1" the wake-up unit 9 will know that there is someone sittingin the driver's seat 3.lf the seat detection unit 5, 6 is a camera unit, video unit, or heat radiationdetector 6, the determination may be made as stated above, thus either in thecamera unit, video unit or in the heat radiation detector 6, respectively, or in thewake-up unit 9.
    The wake-up unit 9 is configured to generate a wake-up signal ß if it is detectedthat the person is sitting on the seat 3. The wake-up unit 9 may be configured togenerate a wake-up signal ß as long as the person is sitting on or standing beforethe driver's seat 3. The wake-up unit 9 is further configured to send the wake-upsignal ß to the EBS 10 of the vehicle 1, whereby the EBS 10 is powered andactivated. The wake-up signal ß may include a flag or a “1 ” if the person is sittingin the drivers seat 3. The wake-up signal ß is configured to turn on the powerfrom a battery to the EBS 10. The battery may be the same battery as the battery8 powering the wake-up unit 9. The EBS 10 may be configured to be activated atthe same time it is powered. When the EBS 10 is activated, it is possible to usethe braking components of the EBS 10, and the anti compounding function willstart working. The person sitting on the driver”s seat 3 may then use the servicebrake at the same time as the parking brake is activated, without the risk of failureof any parts.
    The wake-up unit 9 may be configured to receive seat occupation signals fromdifferent sensors 5, 6. At least one of the signals should then comprise dataindicating that a person is sitting in the driver's seat 3, to generate the wake-up7signal ß. The apparatus 11 may thus become more redundant compared to useonly one sensor. According to another embodiment, at least two of the signalsshould comprise data indicating that a person is sitting in the driver's seat 3, inorder to generate the wake-up signal ß.
    The wake-up unit 9 may also be configured to send the wake-up signal ß to anaccessory unit 7 of the vehicle 1, whereby the accessory unit 7 is powered. Theaccessory unit 7 may be any of the above stated accessory units 7 such as radio;lightning system such as instrument panel lightning, indoor lightning, outdoorlightning; heating devices for pre Warming of engine or cabin 2, extra Warming,seat Warming; a GPS-unit (Global Positioning System) or other positioning unit,etc. may also be arranged in the vehicle 1. Further, the wake-up signal ß may besent to an accessory unit 7 such as a fuel feed pump, a driver setting unit, etc.When the accessory device 7 then is powered, it may also be activated such thate.g. the radio is turned on, any of the lightning is turned on, the heating and/orWarming is turned on, the positioning unit is showing the position of the vehicle 1,the fuel feed pump is started and/or previously set driver settings such as thesteering wheel 4 position are set etc.
    As long as it is detected that a person is sitting on the driver's seat 3, theaccessory device 7 may be powered and/or activated. According to oneembodiment, if the driver is leaving the seat 3, the accessory device 7 is no longerpowered or activated.
    The vehicle 1 may communicate internally between its apparatuses, units,devices, sensors, detectors etc. via a communication bus, for example a CAN-bus(Controller Area Network) which uses a message based protocol. Examples ofother communication protocols that may be used are TTP (Time-TriggeredProtocol), Flexray, etc. ln that way signals and data described herein may beexchanged between different units, devices, sensors and/or detectors in thevehicle 1. Signals and data may instead be transferred wirelessly between thedifferent apparatuses, units, devices, sensors and/or detectors.
    The wake-up unit 9 may comprise a processing unit 12 and the memory unit 13,that may be part of the ECU. The processing unit 12 may be made up of one ormore Central Processing Units (CPU). The memory unit 13 may be made up ofone or more memory units. A memory unit 13 may include a volatile and/or a non-volatile memory, such as a flash memory or Random Access Memory (RAM). Thememory unit 13 further includes a computer program P including a computerprogram code to cause the apparatus 11, or a computer connected to theapparatus 11, to perform any of the method steps that will be described in thefollowing.in Fig. 3 a method for waking up at least the electronic brake system, EBS, 11 ofthe vehicle 1 is illustrated by means of a flowchart. The method will now beexplained with reference to the flowchart. The method comprises generating anoccupation signal indicating if a person is sitting on a driver's seat 3 in the vehicle1 (A1). The occupation signal is generated by the seat occupation sensor 5, 6.The method further comprises receiving, to the wake-up unit 9, the occupationsignal (A2). The method comprises generating a wake-up signal, by the wake-upunit 9, if the person is sitting on the driver's seat 3 (A3). The method furthercomprises sending the wake-up signal to the EBS (10) of the vehicle 1, wherebythe EBS 11 is powered and activated (A4).
    权利要求:
    Claims (2)
    [1] _L laims An apparatus (11) for waking up at least an electronic brake system,EBS, (10) of a vehicle (1), the EBS (10) comprises a parking brake, at leastone service brake and an anti compound functionality, ch aracterized inthat the apparatus (11) comprises: - a seat occupation sensor (6) configured to generate an occupationsignal indicating if a person is sitting on a drivers seat (3) in the vehicle (1); - a wake-up unit (9) that is configured to be powered from a battery(10) and further configured to: - receive the occupation signal; - generate a wake-up signal ß if the person is sitting onthe seat (3); - send the wake-up signal ß to the EBS (10) of thevehicle (1 ), whereby the EBS (10) is powered and activated. The apparatus (11) according to claim 1, wherein the wake-up unit (9)is configured to generate a wake-up signal ß as long as the person is sitting onthe driver's seat (3). The apparatus (11) according to claim 1 or 2, wherein the seatoccupation sensor (6) is configured to detect a force change or pressurechange. The apparatus (11) according to claim 1 or 2, wherein the seatoccupation sensor (6) comprises a camera unit or video unit (7) configured tomonitor the driver's seat (3) and to determine if the person is sitting in thedriver's seat (3) or not. The apparatus (11) according to any of the preceding claims, whereinthe seat occupation sensor (6) comprises a heat radiation detector (7). The apparatus (11) according to any of the preceding claims, whereinthe wake-up unit (9) further is configured to send the wake-up signal ß to anaccessory unit (7) of the vehicle (1 ), whereby the accessory unit (7) ispowered. lO A method for waking up at least an electronic brake system, EBS,(10) of a vehicle (1 ), the EBS (10) comprises a parking brake, at least oneservice brake and an anti compound functionality, the method comprises - generating an occupation signal indicating if a person is sitting on adriver's seat (3) in the vehicle (1 ); - receiving, to a wake-up unit (9), the occupation signal; - generating a wake-up signal if the person is sitting on the driver”sseat (3); - sending the wake-up signal to the EBS (10) of the vehicle (1 ),whereby the EBS (10) is powered and activated. A vehicle (1) arranged with an electronic brake system, EBS, (1 O)with a parking brake, at least one service brake and an anti compoundfunctionality, wherein the vehicle (1) comprises an apparatus (11) according to any of claims 1 to 6.
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    同族专利:
    公开号 | 公开日
    DE102015015271A1|2016-06-16|
    SE538678C2|2016-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    KR101339228B1|2011-12-07|2014-01-02|현대자동차 주식회사|Brake signal controling system for vehicle and method thereof|US11186262B2|2018-10-11|2021-11-30|Bendix Commercial Vehicle Systems Llc|System and method for controlling compounding in a brake actuator|
    法律状态:
    2021-08-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1451526A|SE538678C2|2014-12-11|2014-12-11|Apparatus and method for waking up an electronic brake system of a vehicle|SE1451526A| SE538678C2|2014-12-11|2014-12-11|Apparatus and method for waking up an electronic brake system of a vehicle|
    DE102015015271.8A| DE102015015271A1|2014-12-11|2015-11-25|Apparatus and method for waking up an electronic braking system of a vehicle|
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