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Frontal area measurement of a sports car using S.E.A. CPPMS system

Frontal Area Measurement

Patented frontal area measurement system
from S.E.A.
CPPMS

Frontal Area Measurement

CPPMS – Compact Parallel Projection Measurement System

The CPPMS frontal area measurement system developed and patented by S.E.A. is used to record and measure the front area of a vehicle exposed to wind (front surface or front area). The frontal area is optically scanned in a short time using parallel light, and the shadow image captured is then evaluated with high precision using image processing.

Frontal area measurement for all vehicle types using S.E.A. CPPMS optical system

With S.E.A. frontal area measurement, all relevant components are taken into account in a single measurement run

The patented optical measurement method ensures that all elements relevant to the front surface are completely and correctly recorded in a single measurement, including:

  • Tires: Current shape at different air pressures and load conditions
  • Side mirrors: The quantitative influence of different designs
  • Underbody elements: such as chassis and exhaust systems
  • Attachments and superstructures: such as antenna positioning and shape or door handles
Drawing of the CPPMS system for frontal area measurement with light projection and camera from S.E.A.

Patented design of the frontal area measurement system

The CPPMS measurement principle can be implemented for a variety of spatial conditions, whether permanently installed in a measurement room or integrated into the plenum of an aerodynamic wind tunnel.
Various options are available for correct alignment of the vehicle and can be added on request.

Speed and precision of measurement

The S.E.A. CPPMS system accurately captures the entire frontal area with all relevant factors in a short time in a single automated measurement step.
A parallel light strip is moved across the vehicle. A high-resolution video camera captures the shadow image of the parallel lighting in real time.
The fast recording enables an efficient workflow in the event of spontaneous modifications or changes to the condition of the vehicle model.

Optical measuring system for precise end face measurement – SEA Datentechnik GmbH
Complete view of the automated measuring station for recording the frontal area of vehicles – SEA Datentechnik
Measuring station for precise measurement of the frontal area of vehicles – complete view

Patented process for frontal area measurements

The recorded shadow image is then geometrically corrected and analyzed precisely using innovative image processing. The result is the exact size of the frontal area in square meters.
This procedure enables fast and precise recording of the vehicle geometry, which is crucial for optimizing aerodynamics and complying with regulations.

Technician operating the optical SEA measuring system for measuring frontal areas in an industrial environment
Operation of the frontal area measuring station in practical use – direct interaction with the SEA measuring system

Data conversion and image processing frontal area measurement

Flexibility during processing by the operator

Data conversion and image processing play a crucial role in the measurement process. The specialized CPPMS software converts the captured image into 2D silhouette data, which provides a digital basis for further adjustments.
Before evaluation, the user has the option of actively modifying the image, for example by cutting out or adding specific sections. This makes it possible, for example, to close glass surfaces, modify the shape of mirrors, adjust spoilers, or change the entire body shape. This flexibility in processing is crucial for optimizing vehicle design and improving aerodynamic properties.

Precision, proven performance, and robust quality

The CPPMS system has proven itself over many years with renowned automotive manufacturers worldwide as an indispensable measuring instrument for uncomplicated routine use.

If you require further information or have any questions, please contact us.

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CCPMS frontal area measurement system

product brochure

Projection for measuring frontal area in design – measurement solution from SEA Datentechnik
Projection-based frontal area measurement for precise alignment in design

What is the significance of the frontal area in the automotive industry?

The frontal area is a key term in aerodynamics and refers to the projected area that the shadow of an object, such as a car, casts in the longitudinal direction. This area plays a crucial role in analyzing the airflow around the vehicle and serves as an essential reference surface for the precise calculation of drag. It is also essential for determining other aerodynamic forces and moments that influence the vehicle’s behavior and performance. A thorough understanding of the frontal area enables engineers to optimize aerodynamics, which not only improves efficiency and speed but also has a significant impact on energy consumption and emissions.

When and why is measuring the frontal area important in automotive development?

Drag and performance optimization

Accurate measurement of the frontal area is crucial for calculating the drag of a vehicle or aircraft. This drag affects efficiency and energy consumption. Engineers use the frontal area to optimize design and improve aerodynamics.
Certain regulations and standards require the frontal area to be specified in order to ensure compliance with emission and safety standards. Many regional markets have regulations and standards for emissions and fuel consumption that can be met by optimizing the frontal area.

Safety analyses:

In vehicle development, the frontal area is important for crash tests and safety analyses, as it influences the behavior of the vehicle at different speeds.

Regulatory requirements:

Certain regulations and standards require the specification of the frontal area to ensure compliance with emission and safety standards. Many markets have regulations and standards for emissions and fuel consumption that can be met by optimizing the frontal area. Vehicles that do not meet these requirements may be subject to heavy penalties or restrictions.

Noise reduction:

A better aerodynamic design that also takes the frontal area into account can reduce air resistance and thus also reduce driving noise levels. This contributes to a more comfortable driving experience.

Air conditioning:

The shape and size of the frontal area influence how air flows around the vehicle. This affects the efficiency of the air conditioning system, as less energy is required to cool or heat the interior.

Safety aspects:

An optimized front end can also affect the stability of the vehicle at high speeds. Better aerodynamics can reduce the risk of lift and associated safety issues.

Increasing vehicle appeal:

Consumer interest in efficient and environmentally friendly vehicles is also taken into account when developing new models. A smaller frontal area and thus a better drag coefficient can be a selling point.

Sustainability:

Sustainability plays a central role in today’s automotive industry. Improved aerodynamics lead to reduced CO2 emissions, thereby reducing the vehicle’s ecological footprint.

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