• 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:
    The invention relates to a system (1) for detecting a locking readiness position of a closure element (10) of a motor vehicle, comprising a first sensor (12) for detecting a position signal of the closure element (10), further comprising a second magnetic sensor (14) for detecting a magnetic field signal (18). According to the invention, it is provided that the first sensor (12) and the second magnetic sensor (14) are connected to an electronic unit (20) for data processing purposes, and the electronic unit (20) carries out the magnetic field signal (18) and the position signal by data transmission, wherein the Electronic unit (20) has a memory (22) with at least one stored magnetic field signal value (24), wherein the electronic unit (20) an output signal change at an output (26) of the electronic unit (20) in a positive comparison of the magnetic field signal value (24) with the detected Magnetic field signal (18) and upon detection of an end position of the closure element (10) generated. Furthermore, the invention relates to a method for detecting a locking readiness position of a closure element (10) of a motor vehicle.
    公开号:AT515386A2
    申请号:T813/2014
    申请日:2014-11-06
    公开日:2015-08-15
    发明作者:Reiner Armbruster
    申请人:Porsche Ag；
    IPC主号:
    专利说明:

    System for detecting a locking readiness position of a closure element of a motor vehicle
    The invention relates to a system for detecting a locking readiness position of a closure element of a motor vehicle, according to the preamble of claim 1. Furthermore, the invention relates to a method for detecting a locking readiness position of a closure element of a motor vehicle, according to claim 8.
    From the document DE 10 2011 000 391 B3 a system for locking a closure element for a motor vehicle is known. The system has a first sensor, wherein a predetermined position of a closure element can be detected by the first sensor. Furthermore, the system has a second sensor, which is designed as a reed switch. The reed switch switches at a certain applied magnetic field strength value. The determined magnetic field intensity value is generated by a magnet, which is arranged on a pivotable hood of a convertible vehicle. By pivoting the top in the vicinity of the reed switch is accordingly a pivoting of the magnet, whereby at a certain position of the magnet at the reed switch of the specific magnetic field strength value is achieved. However, it has proven to be disadvantageous that a switching operation of the reed switch can only be triggered by the achievement of a specific magnetic field strength value, i. that the specific magnetic field strength value must be exceeded by the magnet used. The use of a weaker magnet, z. As in the case of an exchange, this is not possible, which leads to a limited usability of the system.
    It is an object of the present invention to provide a system and a method for detecting a lock-ready position of a closure element of a motor vehicle, wherein the system and the method have a simple and inexpensive construction, in particular that a use of the system and the method for different magnetic field signals is provided.
    To solve this problem, a system for detecting a locking readiness position of a closure element of a motor vehicle with the features of claim 1, in particular with the features of the characterizing part and a method with the features of claim 8 is proposed. In the dependent claims preferred developments are carried out. The features mentioned in the claims in the description may be essential to the invention, individually or in combination. Features and details which are described in connection with the method according to the invention, of course, also apply in connection with the system according to the invention and vice versa.
    The invention discloses a system for detecting a locking readiness position of a closure element of a motor vehicle. In this case, the system has a first sensor for detecting a position signal of the closure element. Furthermore, the system has a second magnetic sensor for detecting a magnetic field signal. According to the invention, it is provided that the first sensor and the second magnetic sensor are connected to an electronic unit for data technology. In this case, a forwarding of the magnetic field signal and the position signal takes place in terms of data technology to the electronics unit. The electronics unit has a memory with at least one stored
    Magnetic field characteristic, wherein the electronic unit generates an output signal change at an output of the electronic unit in a positive comparison of the magnetic field characteristic with the magnetic field signal and upon detection of an end position of the closure element. As a magnetic field characteristic, a value of a magnetic field strength can be considered. So z. B. a magnetic field characteristic z. B. be a value between -67 mT and + 67 mT. So it is also conceivable that a magnetic field characteristic can be defined as a value in a certain voltage range, z. B. in a voltage range of - lv to + IV, wherein the voltage can be caused by an induced voltage of the second magnetic sensor, caused by the magnetic field signal. The term signal, in particular the term magnetic field signal is meant within this document as a state, for example, the magnetic field signal may be a magnetic field strength. Also, a magnetic field signal can be understood by a pulsed, emitting magnetic field with a specific magnetic field strength by an electromagnet. By the pulsed magnetic field signal, e.g. Information is transmitted. Various magnetic field signals may be stored in the memory of the electronics unit. At the output of the electronic unit there is an output signal change in a positive comparison of the magnetic field signal value with the detected magnetic signal and upon detection of an end position of the closure element. The output signal of the electronic unit can initially have a low level. The low level can be defined as 0 V. A positive comparison of the
    Magnetic field signal value with the detected magnetic field signal can be effected in that a detected magnetic field signal in the form of a detected magnetic field strength reaches a certain threshold value of a magnetic field strength. In this case, the threshold value of the magnetic field strength, d. H. in this case the
    Magnetic field signal value, z. B. be at 50 mT. The magnetic field signal value may be variably stored in the memory of the electronic unit. It is conceivable that a plurality of magnetic field signal values are stored in the electronic unit. In this case, before commissioning of the system, a specific magnetic field signal value can be determined, which leads to the triggering of the output signal change at the output of the electronic unit. The selection from the stored magnetic field signal values may be made by a user of the system. Thus, prior to installation of the system, e.g. in a motor vehicle, are determined by the user via an interface of the electronic unit, which
    Magnetic field signal value to trigger the output signal change.
    It is advantageous that the second magnetic sensor detects a field strength measurement of the magnetic field signal and / or an identification of the magnetic field signal. Thus, an approximate magnetic field to the second magnetic sensor can be detected by a linear Hall sensor, wherein the linear Hall sensor can output a field strength of the approaching magnetic field corresponding linear level. The linear level can then be forwarded to the electronic unit, wherein the electronic unit evaluates the corresponding linear level, in particular compares this corresponding linear detected level with the stored magnetic field signal value. If the stored magnetic field signal value is exceeded by the detected level, the output signal change at the output of the electronic unit can take place with simultaneous detection of an end position of the closure element. It can the
    Output change at the output of the electronics unit from a low level to a high level or from a high level to a low level. Thus, the low level can be at 0 volts and the high level z. At 5 volts. Furthermore, it is conceivable according to the invention that an identification of the magnetic field signal of the approaching magnetic field takes place at the second magnetic sensor. The corresponding approximately magnetic field at the second magnetic sensor can be detected with a magnetoresistive angle sensor, which has the advantage that in addition to a field strength measurement and an identification of the magnetic field is made possible. This can be done by the magnetoresistive angle sensor used as a second magnetic sensor, a field strength measurement and identification of the magnetic field signal.
    Furthermore, it is advantageous that the first sensor is a Hall sensor. A Hall sensor enables non-contact detection of a magnetic field. The Hall sensor supplies an output voltage which is proportional to the magnetic field strength and the current passing through it. This means that the higher the surrounding magnetic field surrounding it, the higher the output voltage of the Hall sensor. The detection of the end position of the closure element can accordingly take place without contact. It is also conceivable that the first sensor is a simple on-off switch. In this case, a button can be used, which switches at a touch. If the closure element touches the button, the detection of the end position of the closure element takes place. The advantage of a simple on-off switch is its cost-effective production, whereby the entire locking device can be produced more cheaply.
    It is also conceivable according to the invention that a second electronic unit is arranged electrically at the output, wherein the second electronic unit has at least one second output. The second output can be energetically loaded higher than the output of the electronic unit. The output of the electronics unit can, for. B. via an output of a TTL gate, wherein a voltage at the output of the TTL gate between z. B. 0 V and 5 V may be. The current drain of the TTL gate can be z. B. between 4 mA and 20 mA. Thus, a maximum power output at the output of the TTL gate would be given by P = U x I corresponding to z. B. P = 5Vx20 mA = 0.1W possible. This can z. B. only electromechanical devices, eg. B. electric motors with an extremely low power consumption, operated. In order to operate electromotive components of higher power, therefore, a gain is necessary. For this purpose, the second electronic unit can be constructed as an amplifier unit, wherein at an output signal change at the output of the electronic unit, the second electronic unit at the second output a higher tappable electrical power can be removed. This also enables electromechanical components to be operated at a higher power. This is possible, e.g. for an electromechanical actuation of the closure element by an electromechanical component. Thus, e.g. via an electric motor, the closure element are transferred into a closed state electromechanically. Further, it is conceivable that the second electronic unit has a further output, wherein the further output can be used for an indication of the locking readiness position of the closure element of the motor vehicle. As indication, e.g. a driver information system of a motor vehicle usable. An acoustic display is also conceivable.
    In addition, it is advantageous that the electronic unit and / or the second electronic unit is connected to a fieldbus for data technology. Through a fieldbus, all information can be transmitted via a line. Thus, the electronic unit and / or second electronic unit can be controlled via the fieldbus. The electronic unit and / or second electronic unit can be a control unit, wherein the control units can exchange data with each other via the fieldbus. In addition, a central processing unit can be used, which receives the data from the fieldbus, as well as can send certain data to individual ECUs. As a result, it can be made possible for the central computer unit to send data to the control unit via the fieldbus. H. Electronic unit and / or second electronic unit can send. This can be in the simplest case z. B. be on and off an electromechanical drive of the closure element. By using a fieldbus in a motor vehicle, the wiring effort within the motor vehicle can be significantly reduced. Furthermore, further control devices can be connected to the fieldbus, with all control devices being able to exchange data with one another via the fieldbus. A fieldbus can be a LIN bus or CAN bus.
    Furthermore, it is advantageous that a magnet is arranged on the closure element. The arrangement of the magnet can take place via a bonding method to the closure element. The closure element may be made of plastic, so that the generated field lines are not significantly disturbed by the magnet. It is also conceivable that the closure element is made of a ferromagnetic material. The ferromagnetic material can have a high permeability and a low remanence.
    Thereby, a magnetic shielding of the arranged magnet can be effected to a certain direction by the closure element. In the case that the closure element is made of plastic, the magnet can be arranged in the closure element, so that the
    Magnet is completely surrounded by the plastic of the closure element. Thus, the magnet is effectively protected from external environmental influences, whereby a longer durability of the magnet can be achieved.
    The object of the invention is also achieved by a method for detecting a
    Lock ready position of a closure element of a motor vehicle. In this case, the method comprises the following steps: detecting a position signal of the closure element, detecting a magnetic field signal, generating an output signal change at an output at an electronic unit in a positive comparison of the magnetic field signal with a magnetic field signal value stored in the electronic unit and upon detection of an end position of the closure element.
    This method has the advantage that, in addition to the detection of the end position of the closure element, a positive comparison of the magnetic field signal with a magnetic field signal value stored in the electronic unit takes place in order to detect a locking readiness position. Advantageously, a plurality of magnetic field signal values can be stored in the electronic unit. The magnetic field signal can be detected by a second magnetic sensor. In this case, a magnet, for. B. an electromagnet are brought to the second magnetic sensor. The closer the magnet is brought to the second magnetic sensor, the stronger the detection of the magnetic field strength by the magnetic sensor. Thus, the magnet generates a certain magnetic field strength at a certain position of the magnet to the second magnetic
    Sensor. It can be z. B. the magnetic field strength in a directly adjacent position of the magnet to the second magnetic sensor z. B. 50 mT. In the memory of the electronic unit can, for. As a magnetic field signal value 50 mT > be saved. If the magnet now directly adjoins the magnetic sensor and the second magnetic sensor detects the 50 mT, the electronic unit makes a positive comparison of the magnetic field signal with the magnetic field signal value and an output signal change at the output of the electronic unit is generated. The output signal change at the output of the electronics unit can be used as a trigger for converting the closure element into a locked state. In this case, the closure element can be used for locking a trunk lid of a motor vehicle, a motor vehicle door or a convertible top of a convertible vehicle. Advantageously, in this case, the magnet, which has a specific magnetic field signal, by an exchange magnet with a lower magnetic field signal, d. H. be replaced by a lower magnetic field strength. For this, only the storage of another magnetic field signal value in the memory of the electronic unit is necessary. Thereafter, advantageously, the method and system according to the invention is immediately ready for the use of the evaluation of another magnetic field signal. The replacement can be done via a data interface, which can be located on the electronics unit, e.g. done manually. Thus, it is conceivable that the replacement magnet could be e.g. generates a maximum field strength of 30 mT with a direct contact of the magnet on the sensor. If the stored value of 50 mT persisted in the electronics unit, it would in no case lead to a positive comparison of the magnetic field signal with that in the
    Electronic unit stored magnetic field value. For the use of the system according to the invention and the method according to the invention therefore only the exchange of the magnetic field value in the electronic unit is necessary. This makes it possible to use replacement magnets with a lower magnetic field strength. Of course, magnets with a higher magnetic field strength can be used, with only the exchange of the magnetic field signal value of the correspondingly used magnetic field signal in the electronics unit is necessary. Thus, different magnetic field signals can be evaluated by the electronic unit. Here, e.g. Magnetic field signals are used in which e.g. the magnetic field strength changes over time. Pulsed magnetic field signals are also conceivable.
    It is particularly advantageous that an excess of a threshold value of the magnetic field signal value is determined in order to determine the positive comparison. Thus, a certain magnetic field signal value does not have to be achieved by the detected magnetic field signal for a positive comparison. It may be sufficient in this case for the threshold value of the magnetic field signal value to be exceeded once by the magnetic field signal in order thus to come to a positive comparison and thus to an output signal change with simultaneous detection of an end position of the closure element. The threshold value of the magnetic field signal value can also have a lower and an upper range, wherein the threshold value can cover a specific range. So it is conceivable that when exceeding a threshold at z. B. 50 mT the positive comparison is achieved, but further than a maximum exceeding the threshold to z. B. 70 mT can be evaluated. This can be effectively excluded that stronger magnetic field signals that are not part of the system, can be filtered out.
    Further measures and advantages of the invention will become apparent from the claims of the following description and drawings. In this case, those mentioned in the claims and in the description may each be essential to the invention individually or in any combination.
    Show it:
    1 is a schematic view of a system for detecting a locking readiness position of a closure element of a motor vehicle,
    Fig. 2 is a schematic view of a system for detecting a locking readiness position of a closure element of a motor vehicle with a second electronic unit and
    3 shows a flow diagram of a method for detecting a locking readiness position of a closure element of a motor vehicle.
    It should be noted that like reference numerals reflect the same technical features in the embodiments.
    FIG. 1 shows a schematic view of a system 1 for detecting a locking readiness position of a closure element 10 of a motor vehicle. On an electronic unit 20, a first sensor 12 for detecting an end position of the closure element 10 is arranged by data technology. Next to the electronic unit 20, a second magnetic sensor 14 is connected to the electronic unit 20 data technology. In this case, detected signals from the first sensor 12 and the second magnetic sensor 14 can be transmitted by cable or wirelessly to the electronic unit 20. The first sensor 12 is in the simplest case, a simple on-off switch, which may be designed as a button, wherein upon contact of the j shutter 10 to the key switch 12, an end position of the closure element 10 can be detected. However, the first sensor 12 may also be designed as a Hall sensor, wherein an approximation of the closure element 10 by the Hall sensor 12 can be detected. For this purpose, the closure element 10 can have an auxiliary magnet with a specific magnetic field signal. The second magnetic sensor 14 can register a magnetic field signal 18, the magnetic field signal 18 being generated by a magnet 16. The magnet 16 may be formed as an electromagnet or permanent magnet i. The closer the magnet 16 approaches the second magnetic sensor 14, the greater the value of the detected magnetic field signal 18 which the second magnetic sensor 14 detects. The electronics unit 20 has a memory 22, wherein a stored magnetic field signal value 24 is stored in the memory 22. The electronic unit 20 can perform a positive comparison of the detected magnetic field signal 18 by the second magnetic sensor 14 with the stored magnetic field signal value 24. In a positive comparison of the magnetic field signal value 24 with the detected magnetic field signal 18 by the magnetic sensor 14 with simultaneous detection of the end position of the closure element 10 by the sensor 12 is an output signal change at an output 26 of the electronic unit 20. The output signal 26 may be a low level , where the low level can be defined as 0V. Also, a range of the low level can be defined, so that the low level z. B. is defined in a range of 0 V to 0.8 V. In a positive comparison of the magnetic field signal value 24 with the detected magnetic field signal 18 with simultaneous detection of an end position of the closure element 10, the output signal 26 of z. B. a low level can be changed to a high level. In this case, the high level z. B. assume a value of 5V. The high level, like the low level, may have a certain range, with the high level falling within a range of z. B. 4.4V to 5.4V can be defined. Other output signal changes may also be generated at the output 26. In this case, the output signal in a positive comparison of the magnetic field signal value with the detected magnetic field signal from a 0 V level to z. For example, a sine wave or the like can be changed.
    2 shows a schematic view of a system 1 for detecting a locking readiness position of a closure element 10 of a motor vehicle. The locking element 10 is designed as a hook element. This hook element can be used to lock a motor vehicle part. In this case, the motor vehicle part may be a trunk element, a vehicle door or a convertible top of a convertible vehicle. A position of the closure element 10 can be detected via a first sensor 12. In the simplest case, an on-off switch can be used for the sensor 12, wherein the on-off switch can be designed as a push-button. When touching the closure element 10 to the button 12, an end position of the closure element 10 can be detected. It is also conceivable that the first sensor 12 is designed as a Hall sensor, wherein when approaching a magnet, which may be arranged on the closure element 10, a magnetic field change by the first sensor 12 can be detected. The first sensor 12 is connected to a computer unit 20 in terms of data technology. The connection of the first sensor 12 can be done wirelessly or by wire. On the computer unit 20, a second magnetic sensor 14 is arranged, wherein the second magnetic sensor 14 can detect a magnetic field signal 18 of a magnet 16. When approaching the magnet 16 to the second magnetic sensor 14, a linear level can be detected by the second magnetic sensor 14, wherein the linear level is forwarded to the computer unit 20. The magnet 16 may be designed as a permanent magnet or electromagnet. The second magnetic sensor can accordingly be designed as a Hall sensor, wherein a level corresponding to the magnetic field strength can be detected by the Hall sensor. It is also conceivable that the second magnetic sensor 14 is designed as a magnetoresistive sensor. A magnetoresistive sensor, in particular a magnetoresistive angle sensor, can also enable an identification of the magnetic field signal 18 in addition to a field strength measurement. The second magnetic sensor 14 is connected to the computer unit 20 by data technology. The connection can be wireless or wired. The computer unit 20 in this case has a memory 22 with a stored magnetic field signal value 24. The memory 22 may have a plurality of magnetic field signal values 24. Upon detection of the end position of the closure element 10 and a positive comparison of the magnetic field signal value 24 with the detected magnetic field signal 18, an output signal change takes place at an output 26 of the electronic unit 20. The output 26 is electrically connected to a second electronic unit 28. By the second electronic unit 28, a switching signal at a second output 30 can be achieved, wherein the switching signal 30 can be energetically loaded higher than the output signal change 26. Accordingly, the second electronic unit 28 can serve as an amplifier for an output signal change at the output 26, wherein at a Output change z. B. high level can be done at the second output 30. The high level can be a certain voltage, z. B. 24 V, wherein also a higher current at the output 30 can be removed. This can z. B. electromechanical terminals are connected to the output 30, which may have a power consumption of several watts. In addition, a second output 30 'can be arranged on the second electronic unit 28, wherein only an indication of the locking readiness position can be displayed via the second output 30'. The display of the lock ready position can be done in a level switch from a low level to a high level. The low level can be at 0 V and the high level z. B. at 5 V. If the high level of 5 V at the second output 30 ', so this signal can be a z. B. driver information system forwarded. This can be displayed to a user of a motor vehicle that the locking readiness position of the closure element 10 is reached. The second electronic unit 28 may have an externally accessible voltage input 32. The voltage input 32, here denoted by VCC and GND, where GND stands for ground and VCC for Voltage Common Collector, an external voltage can be applied to the second electronic unit 28 here. As a result, when switching from a low level to a high level of the second output 30, this electrical energy for operating z. B. an electromechanical component can be used. The first electronic unit 20 and the second electronic unit 28 are connected to a field bus 34 in terms of data technology. Via the field bus 34, data can be exchanged from the first electronic unit 20 to the second electronic unit 28 and vice versa. In this case, 34 further control devices can be connected to the fieldbus, with data can be exchanged among each other via the control units. The fieldbus can be a LIN bus or a CAN bus.
    FIG. 3 shows a flow diagram of the method according to the invention. In a first step 40, a position signal of a closure element is detected.
    At the same time, a magnetic field signal is detected in a step 42. A permanent comparison or time-limited comparison of a stored) magnetic field signal value in an electronic unit with the detected magnetic field signal can take place. Likewise, the detection of the end position by a second sensor can be permanent or limited in time. Intervals for detection or comparison are also conceivable. In a third step 46, an output signal change takes place at an output on the electronics unit in the case of a positive comparison of the magnetic field signal with a magnetic field signal value stored in the electronic unit and upon detection of an end position of the closure element.
    I
    It is advantageous that an excess of a threshold value of the magnetic field signal value is determined to determine the positive comparison. The positive comparison made in the third step 46 may be refined by the method of exceeding a threshold. In this case, in a single exceeding of the threshold value by the magnetic field signal, the
    Output signal change remain permanently. This ensures that when the threshold value is exceeded once above the magnetic field signal value, caused by a corresponding magnetic field signal, a reliable detection of a locking readiness position of a closure element of the motor vehicle takes place.
    权利要求:
    Claims (10)
    [1]
    1. A system (1) for detecting a locking readiness position of a closure element (10) of a motor vehicle, comprising a first sensor (12) for detecting a position signal of the closure element (10), further comprising a second magnetic sensor (14) for detecting a magnetic field signal ( 18), characterized in that the first sensor (12) and the second magnetic sensor (14) are connected to an electronic unit (20) for data technology and to the electronic unit (20) a forwarding of the magnetic field signal (18) and the position signal takes place by data technology, wherein the electronic unit (20) has a memory (22) with at least one stored magnetic field signal value (24), wherein the electronic unit (20) an output signal change at an output (26) of the electronic unit (20) in a positive comparison of the magnetic field signal value (24) the detected magnetic field signal (18) and upon detection of a Endpositio n of the closure element (10) produced.
    [2]
    2. System (1) according to claim 1, characterized in that the second magnetic sensor (14) detects a field strength measurement of the magnetic field signal (18) and / or an identification of the magnetic field signal (18).
    [3]
    3. System (1) according to claim 1 or 2, characterized in that the first sensor (12) is a Hall sensor.
    [4]
    4. System (1) according to any one of claims 1 to 3, characterized in that at the output (26), a second electronic unit (28) is arranged electrically, wherein the second electronic unit (28) has at least one second output (30).
    [5]
    5. System (1) according to any one of the preceding claims, characterized in that the electronic unit (20) and / or second electronic unit (28) is connected to a field bus (34) data technology.
    [6]
    6. System (1) according to any one of the preceding claims, characterized in that the first sensor (12) and / or second sensor (14) is wirelessly connected to the electronic unit (20) data technology.
    [7]
    7. System (1) according to any one of the preceding claims, characterized in that on the closure element (10), a magnet is arranged.
    [8]
    8. A method for detecting a locking readiness position of a closure element (10) of a motor vehicle, comprising the following steps: detecting a position signal of the closure element (10), detecting a magnetic field signal (18), generating an output signal change at an output of an electronic unit (20) at a positive Comparison of the magnetic field signal (18) with a magnetic field signal value (24) stored in the electronic unit (20) and upon detection of an end position of the closure element (10).
    [9]
    9. The method of claim 8, comprising the following step: that for determining the positive comparison exceeding a threshold value of the magnetic field signal value (24) is determined.
    [10]
    10. The method according to claim 8 or 9, which is operated on a system (1) according to one of claims 1 to 7. Vienna, at the Dr. med. Ing. H.c. F. Porsche Aktiengesellschaft



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    同族专利:
    公开号 | 公开日
    US9752897B2|2017-09-05|
    FR3016557B1|2020-09-04|
    FR3016557A1|2015-07-24|
    AT515386B1|2018-05-15|
    US20150203027A1|2015-07-23|
    AT515386A3|2018-01-15|
    DE102014100508A1|2015-07-23|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014100508.2A|DE102014100508A1|2014-01-17|2014-01-17|System for detecting a locking readiness position of a closure element of a motor vehicle|
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