IC I 7 6 4 0 In frared C am era U ser M an u al v 1 .0
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1. supplied as part of the Infrared Cameras Inc camera system package That cable is a standard USB 2 0 cable and must be connected to the back plate of the camera unit before operation In the following a quick guide for the installation and running the camera will be presented Quick User Guide for Camera Installation and Running The data signal and communications is accomplished via the USB 2 0 port on the host computer There is one main connector and mating cable supplied as part of the Infrared Cameras Inc camera system package That cable is a standard USB 2 0 cable and must be connected to the back plate of the camera unit before operation It should be noted that the camera drivers and IR Flash software have to be installed on the computer as well When the installation is done the program will be completely installed and a note will appear telling you that the installation is complete Hit any key and you are ready to begin running the IR Flash program The main operating screen referred to as the Main Menu Screen is the first permanent screen that appears when entering the program and all user activities will be originated there Figure 1 The Main Menu and Control Bar options are organized to break the program into several logical functional groups First note that before a complete menu presentation is available you must load an image into the software system or have the camera running in live video mode Once the camera is plugg2. Jan 27 2012 Erfan Haghighi User Manual v 1 0 ICI 7640 Infrared Camera u http www infraredcamerasinc com ETH Zurich CHN E 50 2 Universitatstrasse 16 Tel 044 633 61 57 E mail erfan haghighi env ethz ch ICI 7640 Infrared Camera User Manual v 1 0 Table of Contents Introduction Quick User Guide for Camera Installation and Running List of Tables Table 1 Technical specifications of ICI 7640 Infrared Camera List of Figures Figure 1 Main menu screen of IR Flash software Figure 2 The effect of NUC a before Touch Up and b after Touch Up Figure 3 Emissivity Correction dialog box ICI 7640 Infrared Camera User Manual v 1 0 Introduction ICI 7640 is a high resolution thermal imaging camera produced by Infrared Cameras Inc ICI This camera is a high resolution and high sensitive infrared camera equipped by a microbolometer detector A microbolometer is a specific type of bolometer used as a detector in a thermal camera collecting the light in the 7 5 um to 14 um spectral band This spectral band provides a better penetration through smoke smog dust water vapor etc because the wavelength is much longer than visible light in the 0 4 to 0 7 um spectral band which in turn makes the ICI 7640 Infrared Camera an ideal thermal imaging tool for applications including very sensitive temperature gradients Unlike other types of inf
3. centage value from 1 0 to 100 0 Ambient Temperature The Ambient Temperature which is often referred to as the Background is the temperature of the surfaces surrounding the imaged object These surfaces are those whose energy will hit the face of the imaged object and reflect from it into the camera FOV Note As the value of emissivity becomes lower the error between the actual surface temperature of the object and that shown by the camera becomes greater A great deal of error can be introduced into the calculation process if you are not careful with the emissivity specification Now the camera is ready to a proper and meaningful IR imaging Before imaging begins it is recommended that the camera be turned on and allowed to warm up for a short period of time to maximize stability and temperature measurement accuracy If for any reason the computer s USB port is disrupted at anytime and proper communications with the camera is disturbed hit the Reset Camera sub menu choice Camera gt Reset Camera and the camera will reboot and reestablish USB communication providing the USB port on the computer is functioning properly
4. ed into the USB port on the computer this live video should be started To load an image simply select the LOAD option from the File Main Menu selection and make a file choice The following is a listing of some features found in JR Flash as you might find them on the main screen IR Colormap The Color Palette section allows you to completely control the color palette by which the current image is displayed saved and printed The Color palette selection control is a drop down menu located to the top and right of the image display area as shown in Figure 1 ICI 7640 Infrared Camera User Manual v 1 0 Aueraging Pate 1 ss Point Temperature Zom Mouse Position Analysis Tools 10 Analysis Box elek Poli Figure 1 Main menu screen of IR Flash software Image Averaging The Image Average button will average all the images from the camera into a single displayed image The Image Averaging control is located at the top left ofthe main image display area Zoom The Zoom function allows the zooming ofthe image data currently on screen and is set by the employing the Zoom Slider control This control can be found at the left of the image display area just below the Image Averaging control Manual Capture Along the bottom of the Image display screen you will find a Pause button and a Capture button The Pause button will simply Pause continuous image display and show the image where the Pause button was pressed In con
5. ouch Up and b after Touch Up The next step would be adjusting object parameters Note that accuracy of temperature conversion is typically more dependent on the physics of the scene than on the detailed calibration temperature model provided with the software These physical properties include emissivity and reflection of the target the transmission in the intervening atmosphere and the background foreground temperature within the scene and could be adjusted making the sub menu choice via Temperatures gt Emissivity Correction The dialog box shown below allows the user the ability to offset some of this error by defining these parameters as accurate as practical Emissivity Correction x Emissivity E 1 100 Transmission ls 1 100 Ambient Temperature eee Disable Correction OK Figure 3 Emissivity Correction dialog box Target Emissivity You are provided the capability to select any value of surface optical property of the target surface you consider appropriate to the analysis being performed Simply move the cursor to the Target Emissivity field and click the mouse button Once done enter the value from 1 0 to 100 0 Transmission This value is the percentage of energy loss due to the transmission of the energy from the target surface to the camera This loss can be a result of any intervening Br ICI 7640 Infrared Camera User Manual v 1 0 medium such as atmosphere IR windows etc This loss is entered as a per
6. rared detecting equipment microbolometers do not require cooling leading to low power consumption relative to cooled detector thermal imagers ICI 7640 requires only 1 watt of power via USB connection Despite such advantages it should be noted that microbolometer cannot be used for multispectral or high speed infrared applications Some highlights of the camera are as follow Table 1 Technical specifications of ICI 7640 Infrared Camera Detector Type Microbolometer 640 x 480 UPFA VOX Detector Specification Spectral Response 8 12 um Resolution 640 x 480 Pixels Pixel Size 25 x 25 um Thermal Time Constant 14 ms Electronics and Data Rate Frame Rate Up to 50 fps Thermal Sensitivity 38 mk NETD Measured Average Perf Specificati erformance Specification Accuracy 2 C or 2 Sensor Cooling Not required a aus Typical Power lt 1watts supplied through USB 2 0 Weight 127 6 g without lens 148 g with 25 um lens eter aan Dimensions 2 1 x 3 2 x 0 5 53mm x 81mm x 13mm ICI 7640 Infrared Camera User Manual v 1 0 ICI 7640 has been supplied with two software packages including ICI SDK version 3 7 which contains camera calibration files and camera driver files with which the camera can be accessed and JR Flash as a professional thermal image analysis software package allowing for radiometric image analysis of imagery captured by the IR camera In addition there is one main connector and mating cable
7. rmation about IR image recording and analyzing using IR Flash could be found in the IR Flash Technical Manual version 1 0 documented on the software package In the case that camera is connected to the computer for the first time there are some important settings which have to be adjusted before IR imaging The very important setting which should be done at the beginning is the Image Touch Up The Imager Touch Up function is a Non Uniformity Correction NUC to accommodate long term drift of the electronics What is NUC actually does is just averaging over the whole surface to remove stripes we have basically due to the lens reflection IR Flash provides the ability to perform a manual NUC without the loss of sensitivity To use this feature simply make the sub menu choice through Camera gt Image Touchup and once indicated by an on screen message hold a very uniform and non reflective surface i e black body in front of the lens and hit OK on that message box The Image Touch Up will be complete as soon as the message box is disappeared The effect of Image Touch Up on a typical IR imagery is depicted in Figure 2 The Touch Up function saves the Touch Up data in a file and will be used at subsequent boot up of the camera This data file can be deleted by simply selecting the Delete Touch Up sub menu choice Camera gt Delete Touchup Data ICI 7640 Infrared Camera User Manual v 1 0 Figure 2 The effect of NUC a before T
8. trast the Capture button will capture an image from live display and move it to the captured image group located at the bottom left of the main screen You can capture as many images as needed and save them once your imaging activity is complete You can move through the captured images using the slider controls located to the bottom of the capture image group display Additionally you can move an image in the captured group to the main image display by clicking the left mouse button To return to live 6 ICI 7640 Infrared Camera User Manual v 1 0 video select the Live Video Icon at the bottom of the main image display Finally you can export image data to two file types by selecting Export sub menu via File gt Export The first option is a MS Excel spread sheet file at a resolution that is allowed by Excel and the second one is a CSV file which is an ASCII text file with the image placed in 480 rows of data with each row containing 640 data temperature data points pixels Image Display Control There are a group of controls used to fine tune the way the images are presented on the screen which are located at the right side of the image display area At the bottom of these controls is an AGC Automatic Gain Control radio button If this button is marked the display will occur in the AGC mode otherwise the Center and Span Slider controls will activate giving the user complete control of how this image is displayed Further info
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