EP2914462A1 - Method and control system in connection with a parking brake - Google Patents

Method and control system in connection with a parking brake

Info

Publication number
EP2914462A1
EP2914462A1 EP13851483.1A EP13851483A EP2914462A1 EP 2914462 A1 EP2914462 A1 EP 2914462A1 EP 13851483 A EP13851483 A EP 13851483A EP 2914462 A1 EP2914462 A1 EP 2914462A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
parking brake
activation
fulfilled
control system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13851483.1A
Other languages
German (de)
French (fr)
Other versions
EP2914462A4 (en
Inventor
Jonas EKERLI
Johan Hesse
Håkan Jonsson
Tomas Björnelund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scania CV AB
Original Assignee
Scania CV AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania CV AB filed Critical Scania CV AB
Publication of EP2914462A1 publication Critical patent/EP2914462A1/en
Publication of EP2914462A4 publication Critical patent/EP2914462A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/08—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on brakes or brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
    • B60R25/06—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor operating on the vehicle transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
    • B60R25/1012—Zone surveillance means, e.g. parking lots, truck depots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
    • B60R25/33—Detection related to theft or to other events relevant to anti-theft systems of global position, e.g. by providing GPS coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/16—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle
    • B60T7/18—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle operated by wayside apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B60W10/182—Conjoint control of vehicle sub-units of different type or different function including control of braking systems including control of parking brakes

Definitions

  • the present invention pertains to a method and a control system according to the preambles for the independent patent claims.
  • the invention pertains to electronically activatable and deactivatable parking brakes for vehicles, which are activated or deactivated depending on one or several activation conditions.
  • Electronically controlled parking brakes for vehicles are increasingly common. These typically function such that the parking brake lever is replaced with a small switch, and for example an electromagnet generates the power required to activate the parking brake, where the electromagnet may pull the handbrake cable, alternatively, may sit directly on the brake calliper.
  • Pneumatic (compressed air-operated) parking brakes are most common in heavy goods vehicles.
  • a powerful coil spring presses on a pressure rod which releases the brake shoes in the parking brake (drum brake).
  • bellows are filled with compressed air which counteracts the action of the spring.
  • the compressed air is released from the bellows and the spring unlocks the brake.
  • Electronically activated parking brakes means parking brakes which may be activated in any way via a signal with control instructions which impact for example a cable, a compressed air system, a pneumatic system, etc., which in turn activates or deactivates the parking brake.
  • JP2009096431 describes a system to prevent a driver intoxicated by alcohol from driving a vehicle. When it is established that the driver has been drinking, the parking brake is prevented from being released.
  • US20100294583 describes how it is discovered that the driver has been drinking alcohol and how the vehicle is subsequently immobilised, for example by activation of a parking brake.
  • US20090169068 describes how for example a parking brake is locked while the alcohol test is carried out on the driver in the vehicle.
  • WO201 125436 describes a method to avoid that a vehicle is driven with an overload, where the parking brake is activated when the overload has been identified.
  • US8103414 describes a system where the driver receives information that the vehicle is overloaded and certain vehicle functions are then locked
  • DE102006049419 describes a system where driver identification and control of the parking brake are connected so that the parking brake is activated as long as no driving permission has been granted.
  • US7274979 describes an anti-theft system in a vehicle where the parking brake is controlled depending on whether the correct driver is identified.
  • the objective of the present invention is to improve protection, and to prevent a stolen vehicle from being driven.
  • the deactivation of the parking brake is prevented if the vehicle is outside an approved geographical area.
  • the activation condition relating to the vehicle's position is fulfilled entails that the parking brake may be activated, i.e. the vehicle's brake is applied.
  • the vehicle's position relates to the geographical position of the vehicle. In order for the parking brake to be deactivated, none of a number of activation conditions must be fulfilled, among others the activation condition related to the vehicle's position. Thus, the possibility of the driver releasing the parking brake is prevented if any one of the activation conditions is fulfilled.
  • Figure 1 is a schematic block diagram which illustrates the present invention.
  • Figure 2 is a flow diagram which illustrates the method according to preferred embodiments of the present invention. Detailed description of preferred embodiments of the invention
  • the present invention pertains to a control system 2 for an electronically activatable and deactivatable parking brake 4 for a vehicle, for example a truck, a bus or a car.
  • An electronically activated parking brake means as mentioned above, in the present application, a parking brake which may in some way be activated and deactivated via a signal with control instructions which impacts for example a cable, a compressed air system, a pneumatic system, etc., which in turn activates or deactivates the parking brake.
  • a signal with control instructions which impacts for example a cable, a compressed air system, a pneumatic system, etc.
  • the signal which activates or deactivates the parking brake may be generated by the control system according to the present invention, it is also possible for the driver manually to activate or deactivate the parking brake, for example by pressing a push-button,
  • the control system 2 is adapted to generate a control signal 6 to the said parking brake 4, where the control signal 6 comprises control instructions relating to activation or deactivation of the parking brake.
  • the parking brake is adapted to be activated or deactivated by the said control instructions depending on the state for one or several activation conditions, and that one of these activation conditions is related to the vehicle's position.
  • the control instructions received by the parking brake 4 are interpreted by a control device (not shown in the figure) in the parking brake 4 which controls the parking brake to be activated or deactivated.
  • the parking brake is controlled directly by the control signals.
  • the vehicle's position relates to the geographical position of the vehicle.
  • the control system comprises a processing device 8 which is adapted to receive a position signal 10 indicating the vehicle's current position, a memory device 12 adapted to store data regarding predetermined geographical areas, of which one or several constitute approved geographical areas.
  • a position signal 10 is, for example, a GPS signal from a GPS device in the vehicle.
  • the approved geographical areas may be inserted, or marked, when the route of the vehicle is confirmed. They may also be confirmed by inserting specific areas, e.g. Skane, Sweden, Normandy or Scotland, where the vehicle is permitted to drive.
  • the processing device 8 is adapted to decide whether or not the vehicle's current position is within one of the said approved geographical areas, and that the activation condition regarding the vehicle's position is fulfilled if the vehicle's position is not within an approved geographical area.
  • the parking brake 4 is adapted to be activated, i.e. applied and braking, depending on the said control instructions. If the vehicle is located outside the said approved geographical areas
  • the said activation condition is fulfilled and the parking brake may not be deactivated, i.e. the parking brake prevents the vehicle from being driven.
  • the parking brake prevents the vehicle from being driven.
  • Activation condition related to whether an alarm for the vehicle is activated or triggered.
  • the condition is fulfilled if the alarm is active or triggered.
  • a near field detection of a circuit in the ignition key to the vehicle which functions such that the vehicle may only be started if an ignition key with confirmed identity is used.
  • the condition is fulfilled if the immobilizer is active.
  • Activation conditions relating to one or several remotely transmitted activation conditions. These may relate to a remotely transmitted message, for example sent via SMS, that the vehicle will be used.
  • the condition is fulfilled depending on the contents of these messages.
  • the parking brake will be activated.
  • the present invention also pertains to a method in connection with an
  • the control signal comprises control instructions regarding activation or deactivation of the parking brake, and that the parking brake is adapted to be activated or deactivated by the said control instruction depending on the state for one or several activation conditions.
  • the method according to the invention comprises the step to:
  • control system comprises a processing device which is adapted to receive a position signal indicating the vehicle's current position, a memory device adapted to store data regarding predetermined geographical areas, of which one or several constitute approved geographical areas, i.e.
  • the processing device is also adapted to decide whether the vehicle's current position is within an approved geographical area by comparing the vehicle's current position with the predetermined areas stored in the memory device.
  • the activation condition concerning the vehicle's position is fulfilled if the vehicle's position is not within an approved geographical area, where the parking brake is adapted to be activated, depending on the said control instructions, if this condition is fulfilled.
  • the activation condition regarding the vehicle's position is fulfilled and the parking brake cannot be deactivated.
  • step A a position signal is received which indicates the current position of the vehicle.
  • step B the current position is compared to stored approved geographical areas, and it is determined whether the current position is within or outside an approved area.
  • step C If the current position is not within an approved area, the activation condition is fulfilled (step C) and the parking brake may be activated (step D).
  • step E If, instead, the current position is within an approved area, the activation condition concerning the position is not fulfilled (step E).
  • step F verification of whether any other activation condition is fulfilled is carried out.
  • the parking brake may be deactivated, which takes place at step G. If it is activated, it will then be deactivated. If, on the other hand, it is already deactivated, it will continue to be so.
  • the parking brake will be activated (step D).
  • step H it is controlled whether at least one activation condition is fulfilled. This takes place preferably with a frequency in the range of one or a few seconds. Provided at least one condition is fulfilled, the parking brake will be activated. Where no activation conditions are fulfilled, the procedure starts over from step A. Situations may arise where the vehicle is stolen within an approved geographical area. If there is an activation condition relating to the alarm and the alarm has been generated, the parking brake will be activated.
  • a speed condition is therefore connected to the activation condition relating to the vehicle's position which entails that the activation condition may only be fulfilled if the vehicle's speed is zero, or nearly zero.
  • Information regarding the vehicle's speed is available via the vehicle's general rules and control systems and measured in the conventional way, for example by measuring the rotation speed of the output shaft of the gearbox.
  • the present invention also pertains to a computer program product adapted to carry out the steps in the method described above.
  • the computer program may be implemented in, for example, the control system described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Regulating Braking Force (AREA)

Abstract

A control system (2) and a method for an electronically activatable and deactivatable parking brake (4) for a vehicle. The control system (2) is adapted to generate a control signal (6) to the said parking brake (4), where the control signal (6) comprises control instructions concerning the activation or deactivation of the parking brake, and that the parking brake is adapted to be activated or deactivated by the said control instructions depending on the state of one or several activation conditions, where one of the said activation conditions is related to the vehicle's position.

Description

Title
Method and control system in connection with a parking brake
Field of the invention
The present invention pertains to a method and a control system according to the preambles for the independent patent claims.
In particular, the invention pertains to electronically activatable and deactivatable parking brakes for vehicles, which are activated or deactivated depending on one or several activation conditions.
Background of the invention
Electronically controlled parking brakes for vehicles, e.g. cars and trucks, are increasingly common. These typically function such that the parking brake lever is replaced with a small switch, and for example an electromagnet generates the power required to activate the parking brake, where the electromagnet may pull the handbrake cable, alternatively, may sit directly on the brake calliper.
Pneumatic (compressed air-operated) parking brakes are most common in heavy goods vehicles. A powerful coil spring presses on a pressure rod which releases the brake shoes in the parking brake (drum brake). In order to release the brake, bellows are filled with compressed air which counteracts the action of the spring. In order to apply the brake, the compressed air is released from the bellows and the spring unlocks the brake. Electronically activated parking brakes, in the present application, means parking brakes which may be activated in any way via a signal with control instructions which impact for example a cable, a compressed air system, a pneumatic system, etc., which in turn activates or deactivates the parking brake.
There are a number of different solutions where a parking brake is activated or deactivated depending on whether or not a condition is fulfilled.
A number of examples of such solutions are set out below. JP2009096431 describes a system to prevent a driver intoxicated by alcohol from driving a vehicle. When it is established that the driver has been drinking, the parking brake is prevented from being released. US20100294583 describes how it is discovered that the driver has been drinking alcohol and how the vehicle is subsequently immobilised, for example by activation of a parking brake.
US20090169068 describes how for example a parking brake is locked while the alcohol test is carried out on the driver in the vehicle.
WO201 125436 describes a method to avoid that a vehicle is driven with an overload, where the parking brake is activated when the overload has been identified.
US8103414 describes a system where the driver receives information that the vehicle is overloaded and certain vehicle functions are then locked
simultaneously. DE102006049419 describes a system where driver identification and control of the parking brake are connected so that the parking brake is activated as long as no driving permission has been granted.
US7274979 describes an anti-theft system in a vehicle where the parking brake is controlled depending on whether the correct driver is identified.
Currently, it is possible to activate a pneumatic parking brake electronically. This may be done by the user (driver) or automatically by a control system if certain logical conditions are fulfilled. It is also possible to prevent the release of an applied parking brake if certain logical conditions are not fulfilled. Various logical conditions are mentioned in the documents discussed above. Vehicle theft is an existing problem, and different types of alarms are currently available to prevent theft.
The objective of the present invention is to improve protection, and to prevent a stolen vehicle from being driven.
Summary of the invention
The above-mentioned objectives are achieved with the invention as defined by the independent patent claims.
The preferred embodiments are specified by the dependent patent claims.
According to the invention, the deactivation of the parking brake is prevented if the vehicle is outside an approved geographical area. This means that it is not possible to release the parking brake if the activation condition relating to the vehicle's position is fulfilled, i.e. if the vehicle is located outside the approved area. Thus, it is impossible to drive in such an area. The fact that the activation condition relating to the vehicle's position is fulfilled entails that the parking brake may be activated, i.e. the vehicle's brake is applied. The vehicle's position relates to the geographical position of the vehicle. In order for the parking brake to be deactivated, none of a number of activation conditions must be fulfilled, among others the activation condition related to the vehicle's position. Thus, the possibility of the driver releasing the parking brake is prevented if any one of the activation conditions is fulfilled. Brief description of drawings
Figure 1 is a schematic block diagram which illustrates the present invention. Figure 2 is a flow diagram which illustrates 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. First, with reference to Fig. 1 , the present invention pertains to a control system 2 for an electronically activatable and deactivatable parking brake 4 for a vehicle, for example a truck, a bus or a car.
An electronically activated parking brake means, as mentioned above, in the present application, a parking brake which may in some way be activated and deactivated via a signal with control instructions which impacts for example a cable, a compressed air system, a pneumatic system, etc., which in turn activates or deactivates the parking brake. Apart from the fact that the signal which activates or deactivates the parking brake may be generated by the control system according to the present invention, it is also possible for the driver manually to activate or deactivate the parking brake, for example by pressing a push-button,
According to the invention, the control system 2 is adapted to generate a control signal 6 to the said parking brake 4, where the control signal 6 comprises control instructions relating to activation or deactivation of the parking brake. The parking brake is adapted to be activated or deactivated by the said control instructions depending on the state for one or several activation conditions, and that one of these activation conditions is related to the vehicle's position. Preferably, the control instructions received by the parking brake 4 are interpreted by a control device (not shown in the figure) 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 vehicle's position relates to the geographical position of the vehicle.
According to one embodiment, the control system comprises a processing device 8 which is adapted to receive a position signal 10 indicating the vehicle's current position, a memory device 12 adapted to store data regarding predetermined geographical areas, of which one or several constitute approved geographical areas. In the memory device, map databases, etc. may be stored where different geographical areas may be identified and marked. The position signal 10 is, for example, a GPS signal from a GPS device in the vehicle. The approved geographical areas may be inserted, or marked, when the route of the vehicle is confirmed. They may also be confirmed by inserting specific areas, e.g. Skane, Stockholm, Normandy or Scotland, where the vehicle is permitted to drive. The processing device 8 is adapted to decide whether or not the vehicle's current position is within one of the said approved geographical areas, and that the activation condition regarding the vehicle's position is fulfilled if the vehicle's position is not within an approved geographical area. In this case, the parking brake 4 is adapted to be activated, i.e. applied and braking, depending on the said control instructions. If the vehicle is located outside the said approved
geographical area, the said activation condition is fulfilled and the parking brake may not be deactivated, i.e. the parking brake prevents the vehicle from being driven. Below is a non-exhaustive list of a number of activation conditions and what is required in order for the conditions to be fulfilled:
Activation conditions regarding the vehicle's position.
Fulfilled if the vehicle is located outside an approved geographical area.
Activation condition related to whether an alarm for the vehicle is activated or triggered.
The condition is fulfilled if the alarm is active or triggered.
Activation condition related to the state of an immobilizer in the vehicle.
Preferably, a near field detection of a circuit in the ignition key to the vehicle which functions such that the vehicle may only be started if an ignition key with confirmed identity is used.
The condition is fulfilled if the immobilizer is active. Activation conditions relating to one or several remotely transmitted activation conditions. These may relate to a remotely transmitted message, for example sent via SMS, that the vehicle will be used.
The condition is fulfilled depending on the contents of these messages.
If one or several of the above activation conditions is/are fulfilled, the parking brake will be activated.
The present invention also pertains to a method in connection with an
electronically activatable and deactivatable parking brake for a vehicle depending on a control signal to the said parking brake. The method will be described with reference to the flow diagram in Fig. 2.
The control signal comprises control instructions regarding activation or deactivation of the parking brake, and that the parking brake is adapted to be activated or deactivated by the said control instruction depending on the state for one or several activation conditions. The method according to the invention comprises the step to:
- control the parking brake's activation or deactivation depending on an activation condition related to the vehicle's position.
As described above, the control system comprises a processing device which is adapted to receive a position signal indicating the vehicle's current position, a memory device adapted to store data regarding predetermined geographical areas, of which one or several constitute approved geographical areas, i.e.
geographical areas where the vehicle may be driven.
The processing device is also adapted to decide whether the vehicle's current position is within an approved geographical area by comparing the vehicle's current position with the predetermined areas stored in the memory device. The activation condition concerning the vehicle's position is fulfilled if the vehicle's position is not within an approved geographical area, where the parking brake is adapted to be activated, depending on the said control instructions, if this condition is fulfilled.
If the vehicle is located outside an approved geographical area, the activation condition regarding the vehicle's position is fulfilled and the parking brake cannot be deactivated.
In the flow diagram, different embodiments of the invention have been illustrated with the steps A-F.
In step A, a position signal is received which indicates the current position of the vehicle.
In step B the current position is compared to stored approved geographical areas, and it is determined whether the current position is within or outside an approved area.
If the current position is not within an approved area, the activation condition is fulfilled (step C) and the parking brake may be activated (step D).
If, instead, the current position is within an approved area, the activation condition concerning the position is not fulfilled (step E).
At step F, verification of whether any other activation condition is fulfilled is carried out. These have been presented above.
If no other activation condition is fulfilled, the parking brake may be deactivated, which takes place at step G. If it is activated, it will then be deactivated. If, on the other hand, it is already deactivated, it will continue to be so.
If, on the other hand, at least one other activation condition is fulfilled, the parking brake will be activated (step D).
At regular intervals, it is controlled whether at least one activation condition is fulfilled (step H). This takes place preferably with a frequency in the range of one or a few seconds. Provided at least one condition is fulfilled, the parking brake will be activated. Where no activation conditions are fulfilled, the procedure starts over from step A. Situations may arise where the vehicle is stolen within an approved geographical area. If there is an activation condition relating to the alarm and the alarm has been generated, the parking brake will be activated.
Since no such activation condition exists, it will be possible to drive the vehicle, unless another activation condition is fulfilled.
When the vehicle is no longer within an approved geographical area, the activation condition concerning the vehicle's position will be fulfilled and the parking brake will be activated. However, for security reasons it is not appropriate to activate the parking brake when the vehicle is being driven. According to one embodiment, a speed condition is therefore connected to the activation condition relating to the vehicle's position which entails that the activation condition may only be fulfilled if the vehicle's speed is zero, or nearly zero. Information regarding the vehicle's speed is available via the vehicle's general rules and control systems and measured in the conventional way, for example by measuring the rotation speed of the output shaft of the gearbox.
The present invention also pertains to a computer program product adapted to carry out the steps in the method described above. The computer program may be implemented in, for example, the control system described above.
Alternatively, it may be comprised in a higher-level control system for the vehicle (not showed in the figure).
The present invention is not limited to the preferred embodiments described above. Various alternatives, modifications and equivalents may be used. The embodiments above shall therefore not be deemed to limit the scope of the invention, which is defined by the enclosed patent claims.

Claims

Patent claim
1 . A method in connection with an electronically activatable and deactivatable parking brake for a vehicle depending on a control signal to the said parking brake, where the control signal comprises control instructions regarding the activation or deactivation of the parking brake, and that the parking brake is adapted to be activated or deactivated by the said control instructions depending on the state for one or several activation conditions,
characterised by the fact that the method comprises the step to:
- control the parking brake's activation or deactivation depending on an activation condition related to the vehicle's position, where the control system comprises a processing device which is adapted to receive a position signal indicating the vehicle's current position, a memory device adapted to store data concerning predetermined geographical areas, where one or several of these constitute approved geographical areas and where the processing device is adapted to decide whether the vehicle's current position is within one of the said approved geographical areas by comparing the vehicle's current position with the predetermined areas stored in the memory device, and that the activation condition relating to the vehicle's position is not fulfilled if the vehicle's position is not within an approved geographical area, where the parking brake is adapted to be activated, depending on the said control instructions, if this condition is fulfilled.
2. Method according to claim 1 , where, if the vehicle is located outside the said approved geographical area, the said condition is fulfilled and the parking brake cannot be deactivated.
3. Method according to any of the claims 1 -2, where the activation condition concerning the vehicle's position may only be fulfilled if the vehicle's speed is zero, or nearly zero.
4. Method according to any of claims 1 -3, where the said activation conditions comprise an activation condition related to whether an alarm for the vehicle has been activated or triggered.
5. Method according to any of claims 1 -4, where the said activation conditions comprise an activation condition related to the state of an immobilizer for the vehicle.
6. Method according to any of claims 1 -5, where the said activation condition comprises the state of one or several remotely transmitted activation conditions.
7. A control system (2) for an electronically activatable and
deactivatable parking brake (4) for a vehicle, where
the control system (2) is adapted to generate a control signal (6) to the said parking brake (4), where the control signal (6) comprises control instructions concerning the activation or deactivation of the parking brake, and that the parking brake is adapted to be activated or deactivated by the said control instructions depending on the state of one or several activation conditions,
characterised by the fact that one of the said activation conditions is related to the vehicle's position, where the control system comprises a processing device (8) adapted to receive a position signal (10) indicating the vehicle's current position, a memory device (12) adapted to store data relating to predetermined geographical areas, of which one or several of these constitute approved geographical areas and where the processing device (8) is adapted to decide whether the vehicle's current position is within one of the said approved geographical areas by comparing the vehicle's current position with the predetermined areas stored in the memory device, and that the activation condition relating to the vehicle's position is fulfilled if the vehicle's position is not within an approved geographical area, where the parking brake (4) is adapted to be activated, depending on the said control instructions, if such condition is fulfilled.
8. Control system according to claim 7, where, if the vehicle is located outside the said approved geographical area, the said condition is fulfilled and the parking brake cannot be deactivated.
9. Control system according to any of claims 7-8, where the activation condition relating to the vehicle's position may only be fulfilled if the vehicle's speed is zero, or nearly zero.
10. Control system according to any of claims 7-9, where the said activation condition comprises an activation condition related to whether an alarm for the vehicle is activated or triggered.
1 1 . Control system according to any of claims 7-10, where the said activation conditions comprise an activation condition related to the state of an immobilizer in the vehicle.
12. Control system according to any of claims 7-1 1 , where the said activation conditions comprise one or several remotely transmitted activation conditions.
13. Computer program product adapted to complete the steps in the method according to any of the claims 1 -6.
EP13851483.1A 2012-11-01 2013-10-24 Method and control system in connection with a parking brake Withdrawn EP2914462A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1251233A SE537863C2 (en) 2012-11-01 2012-11-01 Method and control system in connection with a parking brake
PCT/SE2013/051242 WO2014070078A1 (en) 2012-11-01 2013-10-24 Method and control system in connection with a parking brake

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EP2914462A1 true EP2914462A1 (en) 2015-09-09
EP2914462A4 EP2914462A4 (en) 2016-06-22

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BR (1) BR112015009582A2 (en)
SE (1) SE537863C2 (en)
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DE4224536C2 (en) * 1992-07-26 1996-12-19 Thomas Matouschek System for the geographically defined limitation of the movement space of vehicles
DE19512074A1 (en) * 1995-04-03 1996-10-10 Ruediger Klaschka Anti-theft device for a vehicle
EP0839697A1 (en) * 1996-10-31 1998-05-06 Friedrich Hille Device for at least temporarily setting a conditionning signal for prohibiting the starting of a vehicle
FR2761317B1 (en) * 1997-04-01 1999-05-28 Siemens Automotive Sa METHOD FOR PROTECTING A VEHICLE AGAINST UNAUTHORIZED USE, AND EMBEDDED DEVICE THEREOF
WO2012125726A1 (en) * 2011-03-14 2012-09-20 Intelligent Technologies International, Inc. Cargo theft prevention system and method
US7755472B2 (en) * 2007-12-10 2010-07-13 Grossman Victor A System and method for setting functions according to location
WO2009075615A1 (en) * 2007-12-12 2009-06-18 Volvo Lastvagnar Ab Vehicle immobilization system and a method of immobilizing a vehicle
BRMU9001100Y1 (en) * 2010-06-24 2014-10-14 Marcos Guerra Locking system on semi-trailers and braking trailers
US8781647B2 (en) * 2011-01-05 2014-07-15 GM Global Technology Operations LLC System and method for decreasing vehicle speed from a remote location

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EP2914462A4 (en) 2016-06-22
BR112015009582A2 (en) 2017-07-04
SE537863C2 (en) 2015-11-03
SE1251233A1 (en) 2014-05-02
WO2014070078A1 (en) 2014-05-08

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