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    • 48. 发明授权
    • Ultrasonic measuring system having a reduced minimum range and method for detecting an obstacle
    • 具有减小的最小范围的超声波测量系统和用于检测障碍物的方法
    • US09557168B2
    • 2017-01-31
    • US14117128
    • 2012-03-20
    • Albrecht KlotzDirk SchmidMichael SchumannMatthias Karl
    • Albrecht KlotzDirk SchmidMichael SchumannMatthias Karl
    • G01N29/04G01B17/00G01S7/527G01S7/529G01S7/534G01V1/00
    • G01B17/00G01S7/527G01S7/529G01S7/5345G01S15/931G01V1/00
    • An ultrasonic measuring system is described for detecting an obstacle using a resonant transducer element for transmitting an ultrasonic pulse and for generating a received signal which includes the ultrasonic echo pulse reflected from the obstacle, the transducer element generating a decay signal having its resonance frequency after transmitting an ultrasonic pulse. The ultrasonic measuring system includes an evaluation unit having a control unit which is designed to activate the transducer element for transmitting the ultrasonic pulse with the aid of a frequency-modulated transmitted signal generated by the control unit, the frequency modulation taking place with the aid of a modulation signal in such a way that the signature of the ultrasonic pulse differs from that of the decay signal. The evaluation unit is designed to recognize the echo pulse based on an evaluation of a correlation signal which is generated with the aid of at least one correlation filter and which originates from the correlation of the signal generated by the resonant transducer element with the transmitted signal. Furthermore, a corresponding method is provided for detecting an obstacle with the aid of ultrasound, as well as a vehicle assistance system having the ultrasonic measuring system.
    • 描述了一种超声波测量系统,用于使用用于发送超声波脉冲的谐振换能器元件来检测障碍物,并且用于生成包括从障碍物反射的超声波回波脉冲的接收信号,所述换能器元件在发送之后产生其谐振频率的衰减信号 超声波脉冲。 所述超声波测量系统包括评估单元,所述评估单元具有控制单元,所述控制单元被设计成借助于由所述控制单元生成的经调频的发送信号来激活用于发送所述超声波脉冲的所述换能器元件,所述调频发生在借助于 调制信号使得超声脉冲的签名与衰减信号的签名不同。 评估单元被设计为基于通过至少一个相关滤波器产生的相关信号的评估来识别回波脉冲,并且其起源于由谐振换能器元件产生的信号与发射信号的相关性。 此外,提供了借助于超声检测障碍物的相应方法,以及具有超声波测量系统的车辆辅助系统。
    • 49. 发明申请
    • DISTANCE MEASURING DEVICE
    • 距离测量装置
    • US20160209508A1
    • 2016-07-21
    • US14914779
    • 2013-09-06
    • RAKUTEN, INC.
    • Yasuyuki HAYASHI
    • G01S15/10G01S7/527G01S15/02
    • G01S15/10G01S7/527G01S15/025G01S15/88
    • A distance measuring device that can identify a reflected wave by a target object as a measurement target from among reflected waves when the reflected waves are observed in response to one output wave. The device transmits an output wave plural times from a speaker while moving, and acquires waveform data of a sound wave that is received by a microphone every time the output wave is transmitted and includes plural reflected waves caused by reflection of the output wave. Furthermore, the distance measuring device identifies a reflected wave by the target object as the measurement target from among the plural reflected waves according to change in the reception timing of each of the plurality of reflected waves included in each of plural pieces of the acquired waveform data, and calculates the distance to the target object on the basis of the reception timing of the identified reflected wave.
    • 一种距离测量装置,当响应于一个输出波观察反射波时,能够从反射波中的目标对象作为测量对象识别反射波。 该装置在移动时从扬声器发送多次输出波,并且在每次发送输出波时获取由麦克风接收的声波的波形数据,并且包括由输出波的反射引起的多个反射波。 此外,距离测量装置根据包含在多个获取波形数据中的每一个中的多个反射波的接收定时的变化,从多个反射波中的目标对象的反射波识别出作为测量对象的反射波 根据所识别的反射波的接收定时,计算到目标物体的距离。
    • 50. 发明授权
    • Ultrasonic detection device
    • 超声波检测装置
    • US09146307B2
    • 2015-09-29
    • US13379267
    • 2009-09-14
    • Satoru InoueRyotarou SuzukiKunihiko Araki
    • Satoru InoueRyotarou SuzukiKunihiko Araki
    • G01S7/527
    • G01S7/527
    • An ultrasonic detection device is constructed in such a way as to include a discriminating processing unit (a time width detecting part 13 and a pulse width discrimination part 14) for approximating the shape of each signal which is a reflection signal which is reflected from an object as a result of transmitting a ultrasonic pulse toward the object, or a noise as an isosceles triangle and computing a pulse time width equal to the length of the base of the approximating isosceles triangle, and for discriminating between the reflection signal and the noise signal by determining whether the computed pulse time width exceeds a predetermined pulse width discrimination threshold. Therefore, the ultrasonic detection device can determine the pulse time width with stability, and carry out the discriminating process with a high degree of reliability.
    • 超声波检测装置构成为包括用于近似作为从物体反射的反射信号的每个信号的形状的识别处理单元(时间宽度检测部13和脉冲宽度判别部14) 作为向对象发送超声波脉冲的结果,或作为等腰三角形的噪声,并计算等于近似等腰三角形的基底的长度的脉冲时间宽度,并且用于通过以下方式区分反射信号和噪声信号: 确定所计算的脉冲时间宽度是否超​​过预定脉冲宽度判别阈值。 因此,超声波检测装置可以稳定地确定脉冲时间宽度,以高可靠性进行判别处理。