Single-chip 360-degree spiral blade-based mechanical doppler signal generation device and velocity measurement method thereof
By using a single 360-degree spiral blade device combined with the Doppler effect, a stable and controllable mechanical Doppler signal generation was achieved, solving the problems of complex structure and frequency shift limitations of existing devices, and improving the accuracy and spectral range of the ultrasonic Doppler measurement system.
Patent Information
- Application Number
- CN202411246045.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2044-09-06
AI Technical Summary
Existing mechanical Doppler signal generating devices are complex in structure and large in size, and it is difficult to maintain uniform motion for a long time, which leads to unstable Doppler signals, limits the frequency shift range, and affects the accuracy of ultrasonic Doppler measurement systems.
A single 360-degree helical blade device is used. The helical blade is driven to rotate by a motor. An ultrasonic probe is used to transmit and receive ultrasonic signals. Combined with the Doppler effect, the angular velocity and linear velocity of the helical blade are calculated to achieve stable mechanical Doppler signal generation.
The simplified device structure and reduced cost, along with the ability to maintain uniform rotation over extended periods, generate a stable and adjustable mechanical Doppler signal, improving the spectral range and measurement accuracy, and verifying the reliability of the ultrasonic Doppler measurement system.