Description of the Application

Automotive and marine gauges, such as speedometers and tachometers, must be correctly calibrated by the assemblers prior to leaving the factory. This vision application must accurately locate and track the needle of a tachometer through the RPM range (0 to 8,000). This process requires information feedback in real time.

The Solution using Optimas XCaliper

The objective of the application is to track the tachometer's needle. Optimas XCaliper first determines the center location of the tachometer using the Horizontal and Vertical Line Calipers. XCaliper then places two Arc Calipers on the center location: one for the gauge itself and one for the needle. The RPM positions are then calculated in angles and the application determines the angle of the 0 (zero) RPM. XCaliper then calculates the angle of the needle at any given moment, extracts the difference between the needle and zero position, and multiplies by the angle between two RPMs. The RPM value is then displayed on the application's user interface.

Why XCaliper is the right choice

Real-time Inspection. XCaliper tracks the position of the tachometer needle in real-time. Fast Development. XCaliper applications can be quickly prototyped and developed, and compiled. Compatibility. XCaliper's tools are compatible with the high-level, easy-to-use Visual Basic development platform, a wide variety of frame grabbers, and can be used with standard SPC systems and process control I/O equipment. Economical system deployment. XCaliper's run-time license and software-based design make it inexpensive to deploy and maintain a large number of systems.

To see a demonstration of this vision application, or to learn how it was created, please contact Agris-Schoen Vision Systems, Inc.