Method and device for sensing surroundings of movement assistant by means of sound signals which are emitted in form of pulses

An auxiliary equipment and acoustic signal technology, which is applied in the direction of measuring devices, utilization of re-radiation, re-radiation of sound waves, etc., can solve the problems of high cost, discontinuity, high susceptibility of receivers to interference, etc., and achieve low cost and high reliability sexual effect

Active Publication Date: 2014-08-13
ROBERT BOSCH GMBH
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Problems solved by technology

However, in the case of narrow-band signals, and to a greater extent in the case of single-frequency signals: a higher susceptibility to interference of a receiver matched thereto, especially when exactly this frequency When disturbed
Wideband converters for transmitting acoustic signals generally require significantly more expensive generation of the signal form than narrowband converters, because due to the wideband nature, unintentional jumps in the transmission – e.g. when switching the transmission stream on and off The change that occurs when - the signal spectrum of
[0010] In addition, single-frequency systems with pulsed measurements at one signal frequency generally have the following disadvantage: In the case of multiple reflections, that is to say reflections at reflection points close to each other in propagation time, there may be The destructive addition of the reflected signal, and more precisely, the destructive addition of the echoes, occurs such that an unusually small (if not even none) signal s...

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  • Method and device for sensing surroundings of movement assistant by means of sound signals which are emitted in form of pulses
  • Method and device for sensing surroundings of movement assistant by means of sound signals which are emitted in form of pulses
  • Method and device for sensing surroundings of movement assistant by means of sound signals which are emitted in form of pulses

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Embodiment Construction

[0110] Preferred embodiments of the present invention are explained in detail below with reference to the drawings.

[0111] figure 1shows three at least partially simultaneously transmitted pulse-shaped signals S according to a first embodiment of the invention 1 (t), S 2 (t), S 3 (t) time t dependent curves, the signals each having a plurality of corresponding fixed frequencies f c1 , f c2 and f c3 signal block. Here, the signal S 1 (t) consists of three repeated pulses (signal blocks) P 11 ,P 12 and P 13 ,exist figure 1 are only shown in which two pulses P 11 ,P 12 . Signal S 2 (t) consists of three repeated pulses (signal blocks) P 21 ,P 22 and P 23 ,Its figure 1 appears only once in the illustration. In addition, the signal S 3 (t) consists of three repeated pulses (signal blocks) P 31 ,P 32 and P 33 ,Its figure 1 are repeated twice in each of the diagrams.

[0112] exist figure 1 Three signals S with multiple fixed frequency signal blocks each s...

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Abstract

A method for determining the position and/or the movement of objects in the surroundings of a movement assistant by means of sound signals which are emitted in the form of pulses and are reflected at at least one object is provided, in which method at least one sound pulse (S1, S2, S3), which has frequencies below the ultrasonic frequency range, is received and used. In addition, an associated device for carrying out the method, a cover apparatus for the device and a vehicle having the device according to the invention are disclosed.

Description

technical field [0001] The invention relates to a method and a device for acoustically detecting the environment of a sports assistance device and for exchanging information with the environment of the sports assistance device and between the sports assistance devices. In particular, the invention relates to a method and a device for determining the position and / or movement of an object in the environment of a movement assistance device by means of an acoustic signal emitted pulse-shapedly and reflected on at least one object, and for determining the position and / or movement of an object on the basis of the acoustic signal Changes due to reflections are used to distinguish objects reflecting said acoustic signal and to transmit information by emitting a determined signal form from a set of possible signal forms. Furthermore, the invention relates to a device for arranging an acoustic transducer, for example in a groove, the use of a covering device for covering a device accord...

Claims

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Application Information

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IPC IPC(8): G01S15/10G01S15/93G01S15/931
CPCG01S15/931G01S15/107G01S15/34
Inventor M·卡尔
Owner ROBERT BOSCH GMBH
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