• 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:
    Summary A safety system (2) for an electronically activatable and deactivable parking brake (4) drives a vehicle (5), the safety system (2) being adapted to generate a first control signal (6) to said parking brake (4), the control signal (6) ) includes control instructions for activating or deactivating the parking brake. The safety system is adapted to receive an emergency signal (8) from a (manually actuable) emergency switch (10) in the vehicle, and a speed signal (12) which includes information about the current speed of the vehicle. If an emergency signal (8) is received and if the current speed of the vehicle is lower than a predetermined speed threshold VT, said first control signal (6) is generated with control instructions for activating the parking brake (4), and that the safety system (2) is adapted to generate a second control signal (14 ) adapted to deactivate one or more essential systems (16) in the vehicle, for example interrupting the power or switching off the engine, said second control signal being generated if the parking brake is activated by the first control signal. (Figure 1)
    公开号:SE1251465A1
    申请号:SE1251465
    申请日:2012-12-20
    公开日:2014-06-21
    发明作者:Jonas Ekerli；Johan Hesse；Håkan Jonsson；Tomas Björnelund
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Title Safety system and method in connection with a parking brake Field of the invention The present invention relates to a safety system and a method according to the preambles of the independent patent claims.
    In particular, the invention relates to a safety system for electronically activatable and deactivatable parking brakes for vehicles.
    Background to the invention Electronically controlled parking brakes for cars and lorries are becoming more common. These generally work so that the parking brake lever is replaced with a small circuit breaker and, for example, an electromagnet generates the force required to activate the parking brake. The electromagnet can pull on the parking brake cable, or sit directly on the brake caliper. Pneumatic parking brakes are most common for trucks. A powerful coil spring presses on a push rod that pushes out the jaws in the parking brake (drum brake). To release the brake, a bellows is supplied with compressed air that can counteract the force of the spring. When the brake is to be applied, the compressed air is released from the boat and the spring laser cla brake. Electronically activated parking brakes in the present application refer to parking brakes which can in some way be activated via a signal with control instructions which act on, for example, a wire, a pneumatic system, a hydraulic system, or the like, which in turn activates or deactivates the parking brake. The parking brake can of course be made up of other types of brakes, for example a disc brake.
    There are a number of different solutions clar a parking brake is activated or deactivated depending on whether a condition is met or not. Below are a number of examples of such readings.
    US-2010/0294583 describes how it is discovered that the driver has drunk alcohol and how the vehicle is then immobilized, for example by activating a parking brake.
    DE-102006049419 describes a system in which driver identification and control of the parking brake are connected so that the parking brake is activated. Enter as card condition has not been granted.
    Today, it is thus possible to electronically activate and deactivate a pneumatic parking brake. This can be done by the user (driver) or automatically by a control system if certain logical conditions are met. It is also possible to prevent the release of an applied parking brake if logical conditions are not met. In the documents discussed above, various logical conditions have been mentioned.
    Today, there are requirements in several cases that it must be 0, in the event of an emergency situation, for example, to switch off the engine and the power with an emergency switch in the vehicle.
    The following patent documents describe various solutions aimed at automatically applying the parking brake if various predetermined conditions are met.
    For example, US-2008/0191546 describes an automatic braking system for a motor vehicle which comprises a control system adapted to control the braking system of the vehicle.
    US-4572319 describes a parking brake system which applies the parking brake automatically when the engine is stopped.
    US-2008/0149437 describes a system for automatic braking. If a vehicle has come to a standstill after the service brake has been applied, the parking brake will be applied automatically. The parking brake can also be applied in cases where defects have occurred on the service brake.
    US-2003/0090150 refers to a braking device that should be able to automatically apply the parking brake if the vehicle, for example, has been involved in a collision and the driver can thus stop the car himself if it starts to roll.
    WO-2009/156833 describes a method for being able to apply a parking brake automatically. This can happen, for example, when the driver leaves his vehicle or when the engine is off. It is also possible for the parking brake to be used as a complement to the service brake in an emergency situation.
    In an emergency situation where an emergency switch arranged in the vehicle has been activated, it is not always certain that the driver has the opportunity to apply the parking brake himself to ensure that the vehicle does not start rolling. This can give rise to a dangerous situation because the vehicle can then roll off current loss and with a motor switched off because the driver has switched off the power in the vehicle by activating the switch.
    Another scenario is that the driver activates the emergency switch and that the power is switched off, either immediately, if the vehicle is already stationary, or, if the vehicle is still rolling when the emergency switch is activated, the power is sold off when the vehicle has stopped and is at a standstill. In both cases, this means that other systems in the vehicle, for example an electrically activatable parking brake, stop working because the power supply has been broken and even if the driver tries to brake the vehicle with the parking brake, it does not work.
    The object of the present invention is to improve the safety of vehicles in connection with the activation of an emergency switch.
    SUMMARY OF THE INVENTION The above object is achieved by the invention defined by the independent claims.
    Preferred embodiments are set out in the dependent claims.
    By implementing the present invention, an unmatched functionality is achieved that provides customer benefit in the form of comfort and increased security. This is achieved, according to the invention, by applying the parking brake automatically when the switch is activated and the speed of the vehicle is lower than a predetermined speed threshold and not directly dependent on the active actions of the driver. When the parking brake is applied, the vehicle remains braked, for example in connection with an evacuation of the vehicle. Thereafter, one or more essential systems for the vehicle are deactivated, for example by breaking the current in the vehicle, switching off the engine, or the like.
    Brief Description of the Drawings Figure 1 is a schematic block diagram illustrating the present invention. Figure 2 is a flow chart illustrating the method according to preferred embodiments of the present invention.
    Detailed Description of Preferred Embodiments of the Invention The present invention will now be described in detail with reference to the figures.
    Referring to Figure 1, the present invention relates to a safety system 2 for an electronically activatable and deactivatable parking brake 4 for a vehicle 5, for example a truck, a bus, or a passenger car.
    Electronically activated parking brakes, as mentioned above, in the present application refer to parking brakes which can be activated and deactivated via a signal with control instructions which affect, for example, a wire, a pneumatic system, a hydraulic system, or the like, which in turn activates or disables the parking brake. In addition to the signal which activates or deactivates the parking brake can be generated by the safety system according to the present invention, it is also possible for the driver to manually activate or deactivate the parking brake, for example by pressing a button. According to the invention the safety system 2 is adapted to generate a first control signal 6 to said parking brake 4, the control signal 6 comprising control instructions regarding activation or deactivation of the parking brake.
    Preferably, the control instructions received by the parking brake 4 are interpreted by a control unit, or associated logic, in the parking brake 4 which controls the parking brake to be activated or deactivated. Alternatively, the parking brake is controlled directly by the control signals.
    The security system is adapted to receive a node signal 8 which is preferably generated by an emergency switch 10 in the vehicle. The emergency switch can be manually actuated by the driver or by another flake in the vehicle. It is conveniently accessible to the driver. There may be flora switches located in different stables in the vehicle, which may be relevant if the vehicle is a bus. The switch can, for example, be located under a transparent plastic lid which falls on the side of the emergency switch to be activated.
    The emergency switch can also be automatically actuable and then emit a node signal depending on a failed action, for example a severe deceleration or a collision. According to another variant, the emergency switch can be connected to an acoustic sensor and can then be left-handed, for example if the driver shouts loudly.
    According to an alternative, the node signal 8 is adapted to be generated by other systems in the vehicle. This may, for example, occur when any of a number of predefined dangerous 2 situations have occurred or are about to occur, for example related to the speed of the vehicle.
    The safety system is further adapted to receive a speed signal 12 which includes information about the current speed of the vehicle. The speed signal is available, for example, via the vehicle's data bus system.
    The vehicle's current speed janitors in the safety system with a predetermined speed threshold VT and if a node signal 8 is received and if the vehicle's current speed is lower than the predetermined speed threshold VT, the said first control signal 6 is generated with control instructions to activate the parking brake 4, ie. the parking brake receives control signals which meant that it must brake the vehicle and keep it braked. The speed threshold VT is a low speed, preferably 8 km / h or save. It can, for example, be set to zero km / h, ie. Only when the vehicle is stationary will the parking brake be activated if the emergency switch is activated.
    The safety system 2 is further adapted to generate a second control signal 14 adapted to deactivate one or more essential systems 16 in the vehicle, said second control signal being generated if the parking brake is activated by the first control signal 6. Preferably, the safety system 2 is also adapted to receive a feedback signal from the parking brake signal. as confirmation that it has been activated and is employed and then constitutes a prerequisite for the second control signal 14 to be able to be generated.
    Essential systems 16 for the vehicle refer to systems that are important to switch off in an emergency situation, for example the engine, fuel pumps, cooling systems, electrical supply systems.
    According to one embodiment, the second control signal is adapted to break the current in the vehicle, which then results in the majority of systems in the vehicle becoming without electricity.
    According to another embodiment, the second control signal is adapted to switch off the engine in the vehicle, for example by interrupting the power supply to certain parts of the engine, or to restrict the fuel supply to the engine.
    To cut off the power in the vehicle, for example, the second control signal 14 may be adapted to actuate a battery disconnector in the vehicle so that the power supply is cut off to the engine and other systems in the vehicle. The battery separator is arranged in connection with the vehicle's battery system and by breaking the current near the battery system, most of the vehicle's systems become strOmlOsa, which is desirable in an emergency situation, for example if a fire has broken out.
    According to one embodiment, if the safety system detects that no node signal has been received for a long time, the first control signal is issued with control instructions to deactivate the parking brake. It viii saga, when nOdbrytaren aterstalls sa deactivated the parking brake.
    According to another embodiment, if the safety system detects that no node signal has been received and that the parking brake has been manually deactivated, the first control signal is issued with control instructions to deactivate the parking brake. The viii saga, when the node switch is reset so the parking brake is deactivated on the condition that the parking brake is manually deactivated. A variant of this embodiment places additional requirements for the parking brake to be deactivated, so that if the parking brake can be deactivated, the most deactivation must be requested after the emergency switch has been reset.
    The present invention also includes a method in a security system for an electronically activatable and deactivatable parking brake for a vehicle. The method is illustrated by the flight diagram in Figure 2.
    The activation or deactivation of the parking brake takes place in dependence on an initial control signal to the parking brake, and that the control signal includes control instructions regarding activation or deactivation of the parking brake. The security system is adapted to: - receive an emergency signal from an emergency switch; - receiving a speed signal comprising information about the current speed of the vehicle, and that the method comprises the steps of: - generating a first control signal with control instructions to activate the parking brake if an nOd signal is received and if the current speed of the vehicle is lower than a predetermined speed threshold, and thereafter: - generate a second control signal adapted to deactivate essential systems in the vehicle.
    Essential systems for the vehicle refer to systems that are important to switch off in an emergency situation, such as the engine, fuel pumps, cooling systems, electrical supply systems.
    According to one embodiment, the second control signal is adapted to break the current in the vehicle, which then results in the majority of systems in the vehicle becoming without electricity.
    According to another embodiment, the second control signal is adapted to switch off the engine in the vehicle, for example by breaking the power supply to certain parts of the engine, or to restrict the supply of fuel to the engine.
    The figure illustrates the method by checking whether a node signal has been received, if so the current speed of the vehicle with the predetermined speed threshold value VT and if the current speed is less than VT the parking brake is activated and then the power supply in the vehicle is interrupted. The speed threshold VT is a low speed, preferably 8 km / h or Idgre. It can, for example, be set to zero km / h, ie. only when the vehicle is stationary will the parking brake be activated if the emergency switch is activated.
    Preferably, the second control signal is adapted to actuate a battery disconnector in the vehicle and thereby interrupt the power supply to the engine and other systems in the vehicle.
    Since the safety system, according to one embodiment, detects that no down signal has been received anymore, the first control signal is issued with control instructions to deactivate the parking brake.
    According to another embodiment, when the safety system detects that no emergency signal has been received and that the parking brake has been manually deactivated, the first control signal is issued with control instructions to deactivate the parking brake. A variant of this embodiment places additional requirements for the parking brake to be deactivated, and if the parking brake is to be deactivated, the most deactivation must be requested after the emergency switch has been reset.
    The present invention relates to a computer program product comprising computer program instructions configured to perform the steps of the method described above, when the computer program instructions' cars on a computer system, where the computer program product is readable by a computer. The computer program can be implemented in, for example, the security system described above. Alternatively, it can be part of a superior control system for the vehicle.
    The present invention is not limited to the above-described preferred embodiments. Various alternatives, modifications and equivalents can be used. The above embodiments are, therefore, not to be construed as limiting the scope of the invention as defined by the appended claims.
    权利要求:
    Claims (15)
    [1]
    A method in a safety system for an electronically activatable and deactivable parking brake for a vehicle depending on a first control signal to said parking brake, the control signal comprising control instructions for activating or deactivating the parking brake, may be characterized in that the safety system is adapted to: - receive a node signal, preferably from a node switch; - receiving a speed signal comprising information on the current speed of the vehicle, and that the method comprises the steps of: - generating a first control signal with control instructions to activate the parking brake if an emergency signal is received and if the current speed of the vehicle is lower than a predetermined speed threshold, generate a second control signal adapted to deactivate one or more essential systems for the vehicle.
    [2]
    The method of claim 1, wherein said second control signal is adapted to break the current in the vehicle.
    [3]
    The method of claim 1 or 2, wherein said second control signal is adapted to turn off the engine of the vehicle.
    [4]
    The method according to any one of claims 1-3, wherein said second control signal is adapted to actuate a battery disconnector in the vehicle and thereby interrupt the power supply to the engine and other systems in the vehicle.
    [5]
    The method according to any one of claims 1-4, wherein if the security system detects that no node signal has been received any longer, said first control signal is issued with control instructions to deactivate the parking brake.
    [6]
    The method according to any one of claims 1-4, wherein if the security system detects that no node signal has been received anymore and that the parking brake has been manually deactivated, said first control signal is given with control instructions to deactivate the parking brake.
    [7]
    The method according to any one of claims 1-6, wherein said speed threshold is 8 km / h.
    [8]
    A safety system (2) for an electronically activatable and deactivable parking brake (4) for a vehicle (5), wherein the safety system (2) is adapted to generate a first control signal (6) to said parking brake (4), the control signal (6) ) includes control instructions for activating or deactivating the parking brake, characterized in that the safety system is adapted to receive an emergency signal (8), preferably from an emergency switch (10) in the vehicle, and a speed signal (12) which includes information about the current speed of the vehicle, and if a node signal (8) is received and if the current speed of the vehicle is lower than a predetermined speed threshold VT, said first control signal (6) is generated with control instructions for activating the parking brake (4), and that the safety system (2) is adapted to generate a second control signal (14 ) adapted to deactivate one or more essential systems (16) for the vehicle, said second control signal being generated if the parking brake is actuated. observed by the first control signal.
    [9]
    The safety system of claim 8, wherein said second control signal (14) is adapted to cut off the current in the vehicle.
    [10]
    The safety system according to claim 8 or 9, wherein said second control signal (14) is adapted to switch off the engine of the vehicle.
    [11]
    The safety system according to any one of claims 8-10, wherein said second control signal (14) is adapted to actuate a battery disconnector in the vehicle and thereby interrupt the power supply to the engine and other systems in the vehicle.
    [12]
    The security system according to any one of claims 8-11, wherein if the security system detects that no node signal has been received any longer, said first control signal is issued with control instructions to deactivate the parking brake.
    [13]
    The safety system according to any one of claims 8-11, wherein if the safety system detects that no node signal has been received anymore and that the parking brake has been manually deactivated, said first control signal is issued with control instructions to deactivate the parking brake.
    [14]
    The safety system according to any one of claims 8-13, wherein said speed threshold is 8 km / h.
    [15]
    A computer program product comprising computer program instructions configured to perform the steps of the method of any of claims 1-7, wherein the computer program instructions are run on a computer system, the computer program product being readable by a computer. 1/1
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    同族专利:
    公开号 | 公开日
    SE537711C2|2015-10-06|
    WO2014098717A1|2014-06-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4572319A|1984-10-03|1986-02-25|Fail Safe Brake Corporation|Automatic vehicle braking system|
    US6522246B1|2000-07-13|2003-02-18|Joy A. Williams|Motor vehicle emergency system|
    US20030090150A1|2001-11-09|2003-05-15|Min Su Woo|Braking device for vehicles|
    DE102004006374A1|2004-02-09|2005-08-25|Volkswagen Ag|Method and device for activating an electric parking brake|
    DE102005023665C5|2005-05-23|2020-05-14|Knorr-Bremse Systeme für Nutzfahrzeuge GmbH|Method for automatically braking a vehicle equipped with an electronically controlled braking device|
    DE102006049419A1|2006-10-16|2008-04-17|Conti Temic Microelectronic Gmbh|Motor vehicle, has common controller for controlling driving authorization system and electronically controllable parking brake system, where controller checks presence of driving authorization for controlling parking brake system|
    US20080191546A1|2007-02-13|2008-08-14|Louis Gino Plantamura|Automatic braking system for a motor vehicle|
    DE102008030511B4|2008-06-27|2013-05-23|Agco Gmbh|Brake system for a vehicle|
    DE102008063952A1|2008-12-19|2010-06-24|Wabco Gmbh|Method for operating a parking brake device, parking brake device, brake system for carrying out the method, brake system with this parking brake device and vehicle for carrying out the method or with this parking brake device or with this brake system|
    US8196694B2|2009-05-21|2012-06-12|GM Global Technology Operations LLC|Vehicle immobilizer methods and apparatus based on driver impairment|
    法律状态:
    2021-08-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1251465A|SE537711C2|2012-12-20|2012-12-20|Security system and method in connection with a parking brake|SE1251465A| SE537711C2|2012-12-20|2012-12-20|Security system and method in connection with a parking brake|
    PCT/SE2013/051425| WO2014098717A1|2012-12-20|2013-12-02|Safe system and method pertaining to a parking brake|
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