• 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 method involves detecting noise signals by a set of ultrasonic sensors (3a, 3b) arranged at a left side of a motor vehicle (1) and another set of ultrasonic sensors (3c, 3d) arranged at a right side of the vehicle. The noise signals of the left and right sided ultrasonic sensors are compared. Side wind (2) is detected based on variations of the noise signal of the left sided ultrasonic sensor from the noise signal of the right sided ultrasonic sensor. Strength of the side wind is detected based on amount of the variations. A warning signal is output based on the strength. An independent claim is also included for a device for detecting side wind acting on a vehicle.
    公开号:NL2004736A
    申请号:NL2004736
    申请日:2010-05-18
    公开日:2010-11-22
    发明作者:Volker Niemz
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    P91482NL00
    Title: Method and device for detecting a crosswind acting on a vehicle, in particular a motor vehicle
    The invention describes a method and a device for detecting a side wind operating on a vehicle, in particular a motor vehicle.
    Publication DE 41 27 727 A1 discloses a method for minimizing the crosswind influence on the driving behavior of a vehicle, with pressure sensors opposite the sides of the vehicle for measuring the air pressure accumulating in the area of the exterior of the bodywork. are arranged and in which the lateral force of the wind is determined in dependence on the pressure difference between the pressure sensors of both vehicle sides.
    Publication DE 10 2004 017 638 A1 discloses a method for determining a crosswind value for a vehicle, wherein the crosswind value is estimated on the basis of a transverse acceleration value and a rotational speed value. The acceleration value is herein preferably recorded with the aid of an acceleration value sensor and the rotational speed value with the aid of a rotation value sensor. However, such detection methods are also associated with relatively high costs. Alternatively, it is also possible to determine the transverse acceleration and rotational speed value with the aid of a suitable model or estimate, for example from the speed of the vehicle and the steering angle.
    Instead, the present invention makes it possible to derive the effect of crosswind from the deviation of the current track from the track set by means of the steering wheel. As a result, the track deviations no longer have to be based on track formation, track changes, worn tires or road surface irregularities. This is achieved cheaply by providing a method for detecting a side wind operating on a vehicle, in particular a motor vehicle, wherein ultrasonic sensor arranged at least on the left side of the vehicle and ultrasonic sensor arranged at least on the right side of the vehicle a noise signal is received, the noise signals of the left and right ultrasound sensors are compared and a side wind is detected on the basis of the deviations of the noise signals of the left ultrasound sensors with respect to the noise signals of the right ultrasound sensors. These ultrasound sensors can also be well integrated into the vehicle contour.
    Similar advantages are also achieved by a device according to the invention for detecting a side wind operating on a vehicle, in particular a motor vehicle. To this end, the vehicle comprises at least at least one ultrasonic sensor arranged on the left side of the vehicle and at least one at the right side of the vehicle for recording noise signals, as well as an evaluation unit for comparing the noise signals of the left and right ultrasonic sensors and for detecting of a crosswind on the basis of the deviations of the noise signals of the left ultrasound sensors from the noise signals of the right ultrasound sensors.
    The method according to the invention and the device according to the invention have the advantage that use is made of ultrasound sensors for crosswind detection, which are already mounted on the vehicle in many vehicle models and for distance measurement, for example for the realization of a parking aid, or serve to monitor the blind spot. Thus, a simple and reliable detection of the crosswind is possible without additional costs.
    Preferably, a noise signal from at least two ultrasound sensors disposed on the left-hand side of the vehicle and from at least two ultrasound sensors disposed on the right-hand side of the vehicle is recorded. At least one of the ultrasonic sensors arranged on the left-hand side and the ultrasonic sensors arranged on the right-hand side is in each case arranged in the front area of the vehicle, and at least the ultrasonic sensors arranged on the left-hand side in each case are arranged in the area of the vehicle located at the rear. Acting crosswind simultaneously leads to increased amplitude of the noise signal on all ultrasound sensors mounted on the side of the vehicle facing the wind. Conversely, increases in the noise signal due to ambient noise, such as sideways-catching vehicles, occur at the ultrasound sensors located in the rear area of the vehicle and at the ultrasound sensors with a time difference disposed in the front-facing area of the vehicle. In this way, crosswinds can be easily separated from other noise sources that increase noise. Upon detection of a crosswind, a warning signal is preferably issued which draws the driver's attention to the required increased awareness.
    In another advantageous embodiment of the invention, a strength of the crosswind is determined depending on the magnitude of the deviations of the noise signals of the left ultrasound sensors relative to the noise signals of the right ultrasound sensors. With the aid of the determined wind strength, a steering wheel angle compensation can then be determined or an already set steering wheel angle compensation can be compensated. The steering wheel angle that is required for a possible perfect straight-ahead is determined. Similarly, the steering transmission can be changed depending on the wind strength ascertained, whereby the effects of angular deflections can be minimized.
    Further features and advantages of embodiments of the invention appear from the following description with reference to the accompanying drawing, which shows
    Figure 1 is a schematic top view of a motor vehicle with a device according to the invention for detecting the crosswind, and
    Figure 2 shows a schematic representation of the noise signals recorded by the ultrasound sensors under the influence of a crosswind.
    Figure 1 shows a motor vehicle 1 which is provided with a device according to the invention for detecting a crosswind acting on the motor vehicle 1. The crosswind operating on the motor vehicle 1 is thereby symbolically represented with the aid of a level 2. The device comprises two ultrasound sensors 3a and 3b arranged on the left-hand side and two right-hand sides of the motor vehicle 1, respectively of which the left and the right of the right ultrasound sensors are located in the front area of the motor vehicle, preferably in the area of the front fenders, and in each case of the left and right of the ultrasound sensors, is arranged in the rear area of the motor vehicle 1, preferably in the area of the rear fenders. Such ultrasound sensors are often originally placed in front of a system for assisting a driver, for example a parking assistance system, and such sensors thereby serve for the distance measurement to an obstacle located in the vicinity of the motor vehicle. Moreover, additional ultrasound sensors 4 are provided both in the front area and in the rear area of the motor vehicle 1, which are, however, not necessary for the method according to the invention and the device according to the invention. Ultrasound sensors are also used for monitoring the blind spot in many vehicle models, which can be used for the detection of crosswinds corresponding to the invention.
    The ultrasound sensors 3a to 3d and 4 are connected to an evaluation unit 6 for evaluating the sensor signals by means of signal lines 5, which can be designed as a CAN bus or as a point-to-point connection, for example.
    By evaluating and comparing the output signals of the left and right ultrasound sensors 3a to 3d, a side wind acting on the motor vehicle 1 is detected by the evaluation unit 6. Upon detection of a crosswind, a warning signal can be given to the driver via an output unit 7, which signal calls this driver to increased awareness. The warning signal can be given in any form, which means, for example, optically in the form of a display and / or acoustically.
    The device according to the invention is shown in Figure 1 with two left and two right ultrasound sensors. However, the detection of crosswind corresponding to the invention is also possible with ultrasound sensor disposed on the left-hand side and on the right-hand side. Of course, more than two ultrasound sensors can of course also be fitted on both sides of the vehicle.
    The method according to the invention is explained in more detail below with reference to Figure 2. If, as shown in Figure 1 with the aid of the level 2, a crosswind is present on the left-hand side of the motor vehicle 1 in the direction of travel, the ultrasonic sensors 3a and 3b arranged on the windward side of the motor vehicle 1 absorb noise signals with amplitudes which are clearly above the amplitudes of the noise signals received by the ultrasonic sensors 3c and 3d arranged on the wind side of the motor vehicle 1. This state of affairs is shown in FIG. 2 is shown schematically. Therein, the variation of the noise signals received by the ultrasound sensors 3a to 3d in the form of the determined voltage amplitudes with respect to time is recorded. The signal paths 3a "and 3b" represent the noise signals received by the ultrasonic sensors 3a and 3b with high amplitudes. In contrast, the signal paths 3c "and 3d" represent the noise signals received by the ultrasound sensors 3c and 3d with low amplitudes. All signals received by the ultrasound sensors that are not echo signals which are detected by obstacles to be detected in the vicinity of the motor vehicle 1 are referred to as noise signals. In contrast to echo signals from real obstacles, which lead to a peak in the reception signal, noise signals exhibit a relatively constant signal waveform with smaller amplitudes.
    According to the invention, the noise received by the ultrasonic sensors 3c and 3d disposed on the wind side of the motor vehicle 1 is identified as climate-dependent and environmental-dependent ground noise. If it is assumed in the first instance that no further interference sources are present on the side of the motor vehicle facing the wind, then the noise increase received by the ultrasound sensors 3a and 3b is above ground noise based on the corresponding side wind. Therefore, on the basis of the deviations of the noise signals of the left ultrasound sensors 3a and 3b with respect to the noise signals of the right ultrasound sensors 3c and 3d, a side wind acting on the motor vehicle 1 can be detected. Preferably, a crosswind is only detected when the deviations are above a certain threshold value.
    A magnitude of the crosswind can be deduced immediately from the magnitude of the deviations of the noise signals.
    In addition to crosswind influences, however, additional influences, such as, for example, motor vehicles sideways, lead to an increase in noise and therefore act as a disturbance factor with regard to the detection of crosswinds. Noise increases also caused in this way are only detected by those ultrasound sensors which are mounted on the side of the vehicle that is exposed to the interference factor. Such disturbance factors, however, unlike crosswind, do not lead to a simultaneous increase in the collected noise amplitudes on all open sides of the vehicle, but to an increase in noise amplitudes moving over time. For example, in the case of a motor vehicle catching up on the left, this first results in an increase in the noise collected at the ultrasound sensor 3b located in the rear area of the motor vehicle 1 and only after some time to increase the noise at the the front ultrasound sensor 3a. Such interference factors can therefore be distinguished by a simple comparison of the noise signals of the ultrasound sensors arranged in the front region of the motor vehicle with respect to the noise signals of the ultrasound sensors arranged in the respective rear region of the motor vehicle, and such interference factors can be taken into account. for the detection of crosswinds. In the simplest case, for example, crosswinds can only be detected if the deviation between these noise signals is below a certain threshold value.
    By using at least two ultrasonic sensors on each side of the vehicle, of which preferably the front area of the motor vehicle and preferably is not arranged in the rear area of the motor vehicle, as described, interference factors can be easily achieved. detect. However, the method according to the invention can also be applied if only a zero-level sound sensor is available on both sides of the vehicle. The observance of interference factors, such as, for example, motor vehicles that are catching up, is then also possible. Unlike crosswinds, which generally lead to a steady increase in noise, a catching vehicle only leads to a brief increase. By using the time lapse of the received noise signal, therefore, also with the aid of only one ultrasound sensor on a side of the vehicle, side wind can be separated from other interference factors. For example, crosswinds can only be detected when an increased noise from the sides of the vehicle occurs longer than a certain period of time.
    Preferably, the magnitude of the deviations of the noise signals of the left ultrasound sensors from the noise signals of the right ultrasound sensors is evaluated and a strength of the crosswind is calculated therefrom. Depending on the observed crosswind, a warning signal can be given to the driver of the motor vehicle 1. Depending on the detected strength of the crosswind, immediate interventions in the row of dynamics can also follow, for example in the form of a change in the steering transmission, so that the effects of steering results are minimized, or by producing an additional stabilizing steering moment. Giving a pre-warning signal to an electronic stability program is also possible. In many motor vehicles, a so-called steering wheel angle compensation is also taken into account. A steering wheel angle other than 0 ° is calculated, which leads to an optimum straight passage of the motor vehicle. Depending on the detected strength of a crosswind, this steering wheel angle compensation can be corrected if necessary.
    权利要求:
    Claims (8)
    [1]
    Method for detecting a crosswind acting on a vehicle, in particular a motor vehicle (1), wherein - of at least one ultrasound sensor (3a; 3b) arranged on the left-hand side of the vehicle and at least one on the right-hand side ultrasound sensor (3c; 3d) fitted to the vehicle, a noise signal is recorded, - the noise signals from the left and right ultrasound sensors (3a, 3b, 3c, 3d) are compared, and - based on the deviations of the noise signals from the left ultrasound sensors (3a, 3b) a side wind is detected with respect to the noise signals of the right ultrasound sensors (3c, 3d).
    [2]
    Method according to claim 1, wherein a noise signal is received from at least two ultrasound sensors (3a, 3b) arranged on the left-hand side of the vehicle and at least two ultrasound sensors (3c, 3d) arranged on the right-hand side of the vehicle. at least one of the ultrasound sensors (3a; 3b; 3c; 3d) arranged on the left-hand side and one of the ultrasound sensors arranged on the right-hand side is located in the front area of the vehicle and in each case at least one of the one of the ultrasound sensors (3a; 3b; 3c; 3d) mounted on the right-hand side is located in the rear area of the vehicle.
    [3]
    Method according to claim 2, wherein the noise signals of the ultrasound sensors (3a, 3d) arranged in the front area of the vehicle with the noise signals of the ultrasound sensors arranged on the corresponding vehicle side in the rear area of the vehicle (3b, 3c) is compared and a crosswind is then detected if the deviations between these noise signals are below a certain threshold value.
    [4]
    Method according to one of claims 1 to 3, wherein a warning signal is given when a crosswind is detected.
    [5]
    Method according to one of the preceding claims, wherein, based on the magnitude of the deviations of the noise signals of the left ultrasound sensors (3a, 3b) relative to the noise signals of the right ultrasound sensors (3c, 3d), a strength of the crosswind is established.
    [6]
    Method according to claim 5, wherein a steering wheel angle compensation is determined and / or the steering transmission is changed depending on the detected crosswind.
    [7]
    Device for detecting a side wind operating on a vehicle, in particular a motor vehicle (1), with - at least one ultrasound sensor (3a; 3b) arranged on the left-hand side of the vehicle and at least one on the right-hand side of the vehicle vehicle mounted ultrasound sensor (3c; 3d) for recording noise signals, - an evaluation unit (6) for comparing the noise signals of the left and right ultrasound sensors (3a, 3b, 3c, 3d) and for detecting a crosswind on the basis of the deviations of the noise signals of the left ultrasound sensors (3a, 3b) with respect to the noise signals of the right ultrasound sensors (3c, 3d).
    [8]
    Device as claimed in claim 7, wherein on the left and on the right-hand side of the vehicle at least one ultrasonic sensor (3a, 3d) in the front region of the vehicle and at least one ultrasonic sensor (3b, 3c) in each case is located at the rear of the vehicle.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2945867B1|2016-09-30|
    DE102009003257B4|2021-01-28|
    NL2004736C2|2011-12-28|
    DE102009003257A1|2010-11-25|
    FR2945867A1|2010-11-26|
    引用文献:
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    DE102018206739A1|2018-05-02|2019-11-07|Robert Bosch Gmbh|Method and device for detecting a road condition|
    DE102019207043A1|2019-05-15|2020-11-19|Robert Bosch Gmbh|Method and device for determining a source causing a noise level by means of a plurality of ultrasonic sensors of a means of locomotion|
    DE102019207033A1|2019-05-15|2020-11-19|Robert Bosch Gmbh|Method and device for determining tonal signal components in a measurement signal of an ultrasonic sensor of a means of locomotion|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009003257.6A|DE102009003257B4|2009-05-20|2009-05-20|Method and device for detecting cross winds acting on a vehicle, in particular a motor vehicle|
    DE102009003257|2009-05-20|
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