08 Dec 2017

LED current controllers improve power of vision systems

Getting crystal-clear images of fast moving objects is one of the most challenging tasks in vision applications. Subtle fluctuations in the illumination can cause errors in measurement precision. Taking precise control of the LED illumination is the key to ensuring very high image and analysis quality. To improve productivity when using lighting to power a vision system, LED current controllers like SMARTEK Vision’s HPSC series are an ideal option for high-quality, fast and stable processing.

The four-channel controller is designed to work as part of a vision solution, be it for the flexibility to capture fast moving objects with maximized picture sharpness or where precision levels of illumination are required. Driving a broad range of LED illumination, it comes with a digital regulated buck and boost switching power supply with up to 120 W output. The four individually controllable input and output channels enable asynchronous operation and full control over light intensity, timing and synchronization, as well as over modulation of one of more lights for different lighting scenarios via a single controller.

With its very high signal quality and stability, SMARTEK’s HPSC4 produces up to 40 A pulses at a maximum of 48 V on the output. A modern hardware design in a compact, rugged housing, combined with Optimal Autosense for ideal operating conditions at any time, achieves an efficiency of more than 90 %. For precise synchronization and strong overdrive options the HPSC4 comes with opto-isolated trigger inputs and separate output lines for external synchronization. The input-to-output delay of down to 2 µs allows pulses with a resolution of up to 1 µs/ 1 mA and durations from 1 µs to 60 s. The various HPSC4 operating modes – from external, internal and software triggered to continuous operation – allow the synchronization type best suited to a specific application to be selected. With up to 200 V, the IPSC series from SMARTEK Vision also offers a unique solution to benefit from the advantages of an LED current controller at high voltages.

From factory automation to traffic monitoring and control, image processing applications benefit considerably from the performance of their lighting system. The lighting intensity of LEDs, with simultaneously low thermal load, can also be significantly increased with extremely short and very bright pulses of light. Existing LED lights can therefore be operated well beyond their specification and used much more efficiently. For integrators and end users alike, this means two things: more light and less money spent!

Industry and product experts at FRAMOS are available to support customers in integrating the illumination and fitting LED current controllers in their applications and projects. In addition, FRAMOS also provides additional services like development support, customization, and logistics to customers.

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