Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
  • B60K31/0008—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including means for detecting potential obstacles in vehicle path
• • 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
  • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
  • B60W30/14—Adaptive cruise control
  • B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• • 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
  • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
  • B60W30/14—Adaptive cruise control
  • B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
  • B60W30/17—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
• • 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
  • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
  • B60W30/18—Propelling the vehicle
  • B60W30/18009—Propelling the vehicle related to particular drive situations
  • B60W30/18027—Drive off, accelerating from standstill
• • 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
  • B60W2540/00—Input parameters relating to occupants
  • B60W2540/12—Brake pedal position

Definitions

• the present invention relates to a device and a method for automatic longitudinal control of a motor vehicle, which has a distance sensor that measures at least the distance of the own, following vehicle from a preceding vehicle and / or the relative speed with respect to the following vehicle. From the
• Measured values are determined whether the detected preceding vehicle has been stopped, so that the following vehicle is automatically stopped at a distance behind the preceding vehicle. If it is recognized that the preceding vehicle is starting up again, the driver of the following vehicle must actuate a kind of driving confirmation device, the starting confirmation device
• Brake pedal is.
• an adaptive distance and speed controller which measures the distance and relative speed of the preceding vehicle by means of radar radiation and depending on the control of the auxiliary devices and deceleration devices of the vehicle in such a way that the vehicle automatically follows at a predetermined distance behind the preceding vehicle.
• the application limits of this system are limited by the speed, so that such an adaptive distance and speed controller only up to Mirtimal speeds of about 40 kilometers per hour can be used.
• a stop-and-go-acc is being developed which, as a traffic congestion assistant, is also able to independently brake the vehicle to a standstill and to accelerate the vehicle automatically when the preceding traffic starts again. Since such systems are designed as driver-assisted assistance systems, confirmation by the driver is necessary to start off, since it must be ruled out that a person or an object is positioned directly in front of one's own vehicle and cannot be detected by the distance sensors. If such a traffic congestion assistant recognizes that the preceding traffic is starting again, the driver of his own, following vehicle is requested to give a start release by means of a confirmation. Such start-up releases can be provided, for example, by an additional control button on the steering wheel or in the dashboard of the vehicle, or by briefly pressing the accelerator pedal.
• the essence of the present invention is to provide, for a vehicle which has a traffic jam assistant for the automatic longitudinal guidance of the vehicle with a stopping and restarting function, a drive-off confirmation device which can be operated intuitively by the driver and is safe and harmless for the environment, even in the event of incorrect operation , According to the invention this is due to the features of the independent
• the following vehicle starts automatically when the driver does it
• the following vehicle starts automatically when the driver releases the brake pedal It is particularly advantageous that the following vehicle starts automatically when a predetermined minimum pedal travel phimin has been exceeded.
• the following vehicle advantageously starts again automatically when a predetermined minimum pedal force on the brake pedal has been exceeded.
• the following vehicle starts automatically when the brake pedal has been operated for longer than a predetermined minimum actuation time.
• control element which is provided for a control unit of a traffic jam assistant or an adaptive distance or speed control of a motor vehicle.
• a program is stored on the control element, which is executable on a computing device, in particular on a microprocessor or signal processor, and is suitable for executing the method according to the invention.
• the invention is thus reacted by a program stored on the control element, so that this control element provided with the program represents the invention in the same way as the method, for the execution of which the program is suitable.
• an electrical storage medium for example a read-only memory, can be used as the control element.
• FIG. 1 shows a schematic block diagram of an embodiment of the device according to the invention
• FIG. 2 shows a flow diagram of an embodiment of the method according to the invention.
• a longitudinal control device 1 which is able to brake the vehicle to be controlled to a standstill when traffic is slow and after recognizing that the preceding, stopped traffic continues to drive the vehicle to be controlled again automatically ,
• Longitudinal control device 1 has an input circuit 2, by means of which input signals can be fed to the longitudinal control device 1.
• These input signals originate, among other things, from a distance sensor system 3, which detects vehicles or objects traveling in front within the sensor detection area, as well as their distance d, relative speed vrel with respect to the vehicle behind, as well as the vehicle
• one or more sensors can be installed on the front of the vehicle.
• This sensor system can be, for example, a radar sensor system, ultrasonic sensor system, video sensor system, laser sensor system and / or a combination of these sensor types.
• Azimuth angles are fed to the input circuit 2 of the longitudinal control device 1.
• an operating device 4 is provided, by means of which control signals can be fed to the longitudinal control device 1.
• the control device 1 can be switched on or off by means of the operating device 4, and certain operating parameters and settings can be made and changed so that the driver of the vehicle is able to adjust the longitudinal control device 1 according to his needs.
• a speed signal V is provided as an input variable, which is generated by a speed sensor 5, which determines the speed of the vehicle. Knowing one's own vehicle speed V makes it possible to convert the measured relative speed vrel of the preceding object recognized by the distance sensor system 3 into an absolute speed, so that the absolute speed of the preceding vehicle can also be determined.
• a brake pedal sensor 6 which actuates the Brake pedal as well as the intensity of the brake pedal actuation and passes it in the form of an input signal to the input circuit 2 of the longitudinal control device 1.
• a calculation device 8 by means of a data exchange device 7.
• the calculation device 8 can be, for example, a microprocessor or a signal processor on which the method according to the invention runs in the form of a program. The calculation device 8 determines from the
• Longitudinal control device 1 supplied input variables, corresponding to the running program, output variables which are output to an output circuit 9 by means of the data exchange device 7.
• the output variables of the longitudinal control device 1 are output to downstream actuators by means of the output circuit 9. Depending on the input variables, the
• an output variable is output via the output circuit 9 to a power-determining control element 10 of the drive device.
• this power-determining control element 10 can be, for example, an electrically operated throttle valve.
• the power-determining control element it is possible for the power-determining control element to be designed as a fuel quantity metering device of an injection device.
• the power-determining control element 10 can also be a control circuit for an electric motor for drive purposes. If it is determined that the vehicle is too fast and has to be decelerated, a control variable is output to the deceleration devices 11 of the vehicle via the output circuit 9. This manipulated variable is supplied, for example, to a brake control device 11, which uses this to generate a braking pressure or a braking force, which actuate the braking devices of the vehicle, so that the vehicle is slowed down. It is also provided that the
• Output circuit 9 can output a start request signal to a start request device 12. If it is recognized that the own vehicle has been braked to a standstill as a result of a stopping vehicle driving in front, and it is further recognized that the vehicle in front is starting again and the own vehicle can be accelerated, then the own vehicle will
• a driver's start confirmation is necessary so that the driver can inform the system that he has the traffic situation under control and that the vehicle can be started.
• This request to the driver to issue a start confirmation is generated by means of the start request device 12. This can be, for example
• this start-up request device 12 can be an acoustic system, which prompts the driver to confirm the start by means of a warning tone or a voice output. It is also possible for the start request to be a combination of visual and acoustic requests. If the traffic congestion assistant is activated and the own vehicle is also at a standstill as a result of a stopped preceding vehicle and the preceding vehicle is starting again, the start request device 12 is activated and waited until the driver issues a start confirmation by means of the brake pedal sensor 6
• Approach confirmation which is detected by means of the brake pedal sensor 6, can be, for example, the actuation of the brake pedal or the release of the brake pedal until it has returned to the rest position. It is also possible that the brake pedal must be deflected to such an extent that a minimum pedal travel of the brake pedal had to be covered in order not to consider an accidental, lightly tapping the brake pedal as a confirmation of the start. This would increase the security of the system against accidental activation. Furthermore, it is possible that the brake pedal 6 must be deflected out of the rest position for a predetermined minimum actuation time or must be deflected further than a predetermined minimum pedal travel for this minimum actuation time.
• step 13 A flow chart of this method is shown in FIG. This begins in step 13 at the start, whereupon in step 14 the condition must be fulfilled that the longitudinal control with an attached function (traffic jam assistant) is switched on. If this is not the case, the process branches to step 15, where the method is ended. If the longitudinal control with the stopping function according to step 14 is fulfilled, the method is continued in step 16, in which it is checked whether a preceding vehicle has stopped. This is determined by means of the distance sensor system 3, taking into account the vehicle speed V of the speed sensor 5. Has the If the preceding vehicle is not stopped, but is still in motion, step 16 branches to no and is continued in step 14.
• step 17 the own vehicle is stopped at the distance dtarget behind the preceding, stopped vehicle. This is done by means of control signals which control the deceleration means, which intervene in the deceleration devices 11 of the vehicle, these control signals depending on the detected measured variables of the distance sensor system 3, an input target distance dtarget which can be predetermined by means of the control device 4 and the own speed V of the speed sensor 5 is calculated by the accounting device 8. As long as the vehicle in front remains at a standstill, branches
• Step 18 after no and continues in step 18, so that a waiting loop is created. If it is recognized that the preceding vehicle is starting again, the method branches in step 19, in which the longitudinal control device 1 issues a start request to the driver by means of the start request device 12. As long as the brake pedal is not operated, step 20 branches to
• step 20 If it is recognized in step 20 that a start confirmation has been given by means of the brake pedal, the method is continued in step 21, in which the longitudinal control is resumed and depending on the distance D from the preceding one

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• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Automation & Control Theory (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Regulating Braking Force (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=34960354

Family Applications (1)

Country Status (6)

Families Citing this family (13)

Family Cites Families (8)

• 2004
  • 2004-04-21 DE DE102004019164A patent/DE102004019164A1/de not_active Withdrawn
• 2005
  • 2005-02-09 JP JP2007508880A patent/JP2007533539A/ja active Pending
  • 2005-02-09 US US11/578,198 patent/US20070294020A1/en not_active Abandoned
  • 2005-02-09 WO PCT/EP2005/050572 patent/WO2005102764A1/de active Application Filing
  • 2005-02-09 CN CNA2005800119058A patent/CN1942336A/zh active Pending
  • 2005-02-09 EP EP05707985A patent/EP1740408A1/de not_active Withdrawn

Non-Patent Citations (1)

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