US 11,914,082 B2
Ranging device, ranging method, and recording medium
Takuya Iwamoto, Osaka (JP); and Tadashi Morita, Kanagawa (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Nov. 22, 2022, as Appl. No. 17/992,661.
Claims priority of application No. 2022-046979 (JP), filed on Mar. 23, 2022.
Prior Publication US 2023/0305127 A1, Sep. 28, 2023
Int. Cl. G01S 7/526 (2006.01); G01S 15/931 (2020.01)
CPC G01S 7/526 (2013.01) [G01S 15/931 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A ranging device including transducers, the ranging device comprising:
a transmission circuit configured to cause at least one of the transducers to transmit a transmission wave;
a reception circuit configured to output a received signal obtained by digitizing a reflected wave of the transmission wave by using a sampling frequency equal to or more than a frequency of the transmission wave, the reflected wave being received by each of the transducers;
a transfer data generation circuit configured to
separate, into a target period and a non-target period, time-series received signals output from the reception circuit, the target period being a period in which a wave height is equal to or more than a threshold, the non-target period being a period in which a wave height is less than the threshold,
perform thinning-out processing on received signals in the non-target period, and
generate waveform information indicating a waveform received by the transducer; and
a transfer circuit configured to output the waveform information generated by the transfer data generation circuit.