Automotive wind tunnel testing is a core component of modern vehicle research and development. Its primary goal is to accurately measure the pressure (drag) at different positions on the vehicle body under simulated high-speed driving conditions, providing scientific and reliable data to support the analysis of the vehicle's aerodynamic performance and stability. By optimizing the aerodynamic design of the vehicle's exterior, engineers can achieve reduced drag, improved wind noise characteristics, and enhanced stability during high-speed driving.
In automotive wind tunnel testing, multiple pressure measurement points need to be arranged across the vehicle body surface, focusing on key areas such as the front end, side mirrors, body sides, and rear spoiler. These points are used to capture phenomena like flow separation and turbulence, which are then visualized in pressure contour maps. For multi-point synchronous pressure measurement, traditional single-point pressure sensors present challenges such as complex wiring, poor synchronization between channels, and susceptibility to data phase discrepancies. These limitations make it difficult to meet the requirements for simultaneous data acquisition across numerous measurement points, while also increasing testing costs and operational complexity. In contrast, a multi-channel pressure scanner integrates multiple high-precision sensors within a single device, enabling data acquisition from numerous points simultaneously-effectively addressing these pain points. With its strong adaptability and high cost-effectiveness, the multi-channel pressure scanner has become the preferred equipment for automotive wind tunnel testing.
A 16-channel pressure scanner offers an ideal number of channels that closely align with the typical measurement point requirements for small to medium-scale automotive wind tunnel tests. It adequately covers the key pressure measurement areas of the vehicle body without the resource waste associated with excessive channel redundancy. The scanner is equipped with 16 built-in high-precision pressure sensor units. Each pressure measurement point on the vehicle body is connected via tubing to one of the 16 independent pneumatic ports on the scanner. The pressure signals from each channel are amplified and filtered, and then an internal microprocessor triggers all sensors for simultaneous data acquisition. The microprocessor subsequently transmits the data to the test analysis system via Ethernet, enabling synchronized, precise collection of multi-point pressure data.
Mihui Technology's Intelligent Ethernet Pressure Scanner Valve features high-precision pressure sensor modules with ±0.05% FS accuracy, capable of capturing minute pressure changes. It synchronously acquires pressure data from all measurement points, ensuring that the data accurately reflects the flow field state at any given moment. Additionally, its compact size and straightforward wiring allow for flexible installation within the wind tunnel test section, accommodating various vehicle model sizes without requiring complex setup or debugging.
If you would like to learn more, please feel free to click the link for additional details: https://www.mihuitec.com/capacitive-diaphragm-gauge/psv305-intelligent-ethernet-pressure-scanner.html. For any inquiries regarding pressure sensors, you are welcome to reach out to us at mihuitec@gmail.com-we will be happy to assist you.
