- Patent Title: Flow sensor performing multi level down sampling and method thereof
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Application No.: US17546439Application Date: 2021-12-09
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Publication No.: US12123758B2Publication Date: 2024-10-22
- Inventor: Sung Q Lee , Joho Yun , Chang Han Je , Gunn Hwang
- Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Applicant Address: KR Daejeon
- Assignee: Electronics and Telecommunications Research Institute
- Current Assignee: Electronics and Telecommunications Research Institute
- Current Assignee Address: KR Daejeon
- Agency: Rabin & Berdo, P.C.
- Priority: KR 20210018099 2021.02.09
- Main IPC: G01F1/663
- IPC: G01F1/663 ; G01F1/66

Abstract:
Disclosed is a method of operating a flow sensor according to an embodiment of the present disclosure, which includes receiving an ultrasonic signal reflected from a particle, generating first and second digital, generating a first Doppler frequency based on the first and second digital signals, a predetermined number of samples, and a first time period, comparing the first Doppler frequency with a second reference frequency, when the first Doppler frequency is less than a first reference frequency, down-sampling the predetermined number of samples to a first sampling frequency or a second sampling frequency, generating a second Doppler frequency based on the first and second digital signals, the number of down-sampled samples, and a second time period determining an output frequency based on the second Doppler frequency when the first Doppler frequency is less than a first reference frequency, and obtaining flow information of the particle based on the output frequency.
Public/Granted literature
- US20220251948A1 FLOW SENSOR PERFORMING MULTI LEVEL DOWN SAMPLING AND METHOD THEREOF Public/Granted day:2022-08-11
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