US 2025/0172390 A1Published application

Method for classifying at least one object on the basis of height

AssigneeElmos Semiconductor AG

InventorEgbert Spiegel

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Abstract

A method classifies an object on the basis of the height of the object based on an ultrasonic signal. The method comprises: receiving the reflected ultrasonic signal; determining a first total value in a first predefined range around a global maximum of the ultrasonic signal; determining a second total value in a second predefined range preceding the first predefined range; determining a third total value in a third predefined range following the first predefined range; determining a first difference value based on a weighted subtraction operation applied to the third total value and the first total value; determining a second difference value based on a weighted subtraction operation applied to the second total value and the first total value; and classifying the object based on the sign of the first difference value and the second difference value into one of at least two height categories.

Claims15

Dependent claims

A method for classifying at least one object based on a height of the at least one object determined based on data of a reflected ultrasonic signal reflected by the at least one object, the method comprising:

receiving the data of the reflected ultrasonic signal;
determining a first total value, the first total value being one of:
(i) a sum of values of the reflected ultrasonic signal in a first predefined range around a global maximum of the reflected ultrasonic signal, or (ii) a sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in the first predefined range around the global maximum of the reflected ultrasonic signal;
determining a second total value, the second total value being:
(i) the sum of the values of the reflected ultrasonic signal in a second predefined range immediately preceding the first predefined range, or (ii) the sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in the second predefined range immediately preceding the first predefined range;
determining a third total value, the third total value being:
(i) the sum of the values of the reflected ultrasonic signal in a third predefined range immediately following the first predefined range, or (ii) the sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in the third predefined range immediately following the first predefined range;
determining a first difference value based on a subtraction operation, optionally a weighted subtraction operation, applied to the third total value and the first total value;
determining a second difference value based on a subtraction operation, optionally a weighted subtraction operation, applied to the second total value and the first total value;
and
classifying the at least one object into one of at least two height categories based on the first difference value and the second difference value, optionally based on a sign of the first difference value and the second difference value.

8 more elements

An evaluation device for evaluating a reflected ultrasonic signal reflected by at least an object, the evaluation device being configured to:

receive data of the reflected ultrasonic signal,
determine a first total value, the first total value being:
(i) a sum of the values of the reflected ultrasonic signal in a first predefined range around a global maximum of the reflected ultrasonic signal, or (ii) a sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in a first predefined range around a global maximum of the reflected ultrasonic signal,
determine a second total value, the second total value being:
(i) the sum of the values of the reflected ultrasonic signal in a second predefined range immediately preceding the first predefined range, or (ii) the sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in a second predefined range immediately preceding the first predefined range,
determine a third total value, the third total value being:
(i) the sum of the values of the reflected ultrasonic signal in a third predefined range immediately following the first predefined range, or (ii) the sum of each of the values of the reflected ultrasonic signal raised respectively to a higher power, in a third predefined range immediately following the first predefined range,
determine a first difference value based on a subtraction operation, optionally a weighted subtraction operation, applied to the third total value and the first total value,
determine a second difference value based on a subtraction operation, optionally a weighted subtraction operation, applied to the second total value and the first total value, and
classify the at least one object based on the first difference value and the second difference value, optionally based on a sign of the first difference value and the second difference value, into one of at least two height categories.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/962,419Filed 27 Nov 2024
Priority: DE 10 2023 133 216.328 Nov 2023
Published: 29 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01S 7/539
Of systems according to group G01S15/00: using analysis of echo signal for target characterisation; Target signature; Target cross-section
G01B 17/02
Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations: for measuring thickness
G01S 15/42
Systems determining the position data of a target: simultaneous measurement of distance and other co-ordinates
G01S 15/52
Systems of measurement, based on relative movement of the target: discriminating between fixed and moving objects or between objects moving at…