Thermal Vision Improved by Gig-E Vision®

Table of Contents

Introduction
Low Cost but Feature Packed
Uncompressed Digital Video
Small and Flexible Form Factors
Thermography
Color Palettes
GENLOCK
     Image Contrast Enhancement
     Wide Array of Configurations
Easy to Use and Integrate
     Cabling
     Power
     Deployment and Remote Operation
Applications

Introduction

Viento-G thermal cameras are unique imaging systems that are packed with features, easy to use and are specifically designed for use in a wide range of laboratory imaging and thermography applications. The Viento-G thermal camera was specified around the DRS TamariskTM thermal cores, GigE Vision Standard, and standard connectors. The camera’s design makes it feature packed and low cost while being easy-to-integrate and use in a wide range of applications.

Low Cost but Feature Packed

Viento-G thermal cameras provide top-of-the-line imaging at the lowest cost-per-pixel in their class, and hence they are suitable for use in custom applications and custom OEM products. In either of its two form factors, the Viento-G camera is available as thermal imagers with thermographic data (Viento-GT) or standard thermal imagers (Viento-G).

Uncompressed Digital Video

In all Viento-G thermal cameras – the thermographic Viento-GT and the standard Viento-G versions – the GigE Vision interface transfers uncompressed, full-fidelity image data to the host system. So whether users are detecting small temperature changes in a sensitive imaging application, performing image processing in an industrial process-control environment, or gathering numeric temperature data for computation and analysis, the Viento-G thermal camera delivers full-frame-rate images, free of compression artifacts at resolutions up to 640 x 480 pixels. This digital video can either be streamed as 8 bit or 14 bit digital data or as a color image. Additionally, the Viento-GT offers a 16-bit digital mode with thermographically calibrated digital data for each pixel.

Small and Flexible Form Factors

The Viento-G thermal camera comes in two form factors — a split board set with flexible connection between the board sets and a fully enclosed and connectorized model. The latter provides standard connectors that allow rapid integration and easy use of the interface. A SMA connector provides a GENLOCK interface for optional frame synchronization and an RJ45 connector offers the Ethernet and Power over Ethernet connection (PoE). The unit can be powered through a PoE injector or plugged directly into a PoE-enabled network switch so that only one Ethernet cable is needed to use the camera out of the box.

Viento-G thermal cameras

With the split board form factor, integrators have the flexibility to install the unit into custom applications that have stringent weight and size requirements. Sierra Olympic Technologies, Inc. (SOTI) certifies proper operation when using flex cables up to a maximum length of eight inches between the board sets.

Viento-G thermal cameras

Thermography

Viento-GT models are thermographically calibrated to allow accurate measurement of temperatures over a dynamic range of -40 °C to +550 °C. The Isotherm imaging feature is also built in to the thermal core. DRS’ proprietary ICE-o-Therm allows users to isolate the key temperature sections of the image and configure them to be displayed, which can eliminate an unimportant or noisy image background.

Color Palettes

In color video output mode, nine different color palette configurations enable users to set the camera to their preference or alternatively to find the palette that optimally displays the particular scene the camera is looking at.

GENLOCK

The Viento-G cameras include the optional GENLOCK feature that can be software enabled in either slave or master modes, so as to provide for precise and synchronized triggering in vital timing applications.

Image Contrast Enhancement

Image Contrast Enhancement (ICETM) feature enables users to considerably enhance the image in low contrast scenes and adjust the video image quality for their scene.

Wide Array of Configurations

Viento-G thermal cameras have the option for two different form factors (split board or enclosed), two resolutions (320 x 240 or 640 x 480) and a wide range of lenses totaling to over 40 unique configurations.

Easy to Use and Integrate

Cabling

With regard to cabling, even the slimmest Camera Link cables are still stiff, heavy and costly. Since GigE Vision specifies the use of standard Gigabit Ethernet network infrastructure, Viento-G thermal cameras are able to use the same Ethernet cabling as is used in standard IT networks. A Camera Link cable is restricted by specification to a maximum run of 10 m (33 ft). On the other hand, GigE Vision operates within the Gigabit Ethernet standard, where Cat 5e cables can extend up to 100 m (328 ft). Even an Ethernet cable measuring 300 foot in length is less expensive than a Camera Link cable extending to 30 foot in length.

Power

After accounting for the cabling that will carry video from the camera (thick and expensive Camera Link cabling against simple and lightweight Ethernet cabling) the camera still has to be powered. While “Power over Camera Link” (POCL) systems are there, they are not universal across Camera Link frame grabber boards, and also the Camera Link cables have to be compatible too – “generic” Camera Link cables that are less expensive may not be compatible with POCL. Rather than using POCL, there are many cameras that have a separate power input connector requiring a separate cable. In the case of a camera that is remotely being operated 33 ft away (the maximum allowed length of a Camera Link cable) and when there is no power source close to the camera, then voltage drop over a long power cable can turn out to be a problem. Therefore, while Camera Link cabling restricts remote operations to 33 feet even at that short distance, it would be difficult to power the camera remotely.

The Viento-G thermal camera is powered through the PoE industry standard, with power supplied over that same light, thin and inexpensive Ethernet cable that streams the video. It is the PoE standard that specifies operation at 48 V nominally and by employing this standard the circuitry in the Viento-G powers the camera consistently over cable lengths up to the full-length Gigabit Ethernet standard of 100 m (328 feet).

Deployment and Remote Operation

Given that the Viento-G camera links to standard Ethernet network infrastructure, in many cases, it would be simple to deploy a system of one or more Viento-G. There are many facilities that are already wired with Ethernet switches and cabling, and the Viento-G camera is capable of plugging in to those networks that are already in place. Even setting up a system with various cameras hundreds of feet apart can be relatively easier than it would be using analog video connections or Camera Link cables.

A Viento-G imaging system can be as simple as connecting a short Ethernet cable across a workbench or desk, or it might be several cameras spread across a factory floor or throughout a facility. In both cases, the Viento-G camera can be deployed more easily thanks to the ability to leverage current Gigabit Ethernet infrastructure and the use of widely accessible network elements and Ethernet cables.

Applications

The Viento-G thermal cameras, both standard and thermographic models, can be employed for many different applications such as early detection and warning for hot spots and fires, monitoring switching and power transmission equipment for predicting and preventing failures, monitoring the quality of circuits or manufactured goods on an assembly line, non-destructive testing (NDI), non-destructive testing (NDT) and medical imaging.

This information has been sourced, reviewed and adapted from materials provided by Sierra-Olympic Technologies Inc.

For more information on this source, please visit Sierra-Olympic Technologies Inc.

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