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Description

The FeverScan-IFSS is an accurate infrared radiometric screening system that can be used to screen the body surface temperature of people and thus screen out suspected people with fever.

Equipment Provided

» ThermalVision
» PC with processing software
» AC/DC power supply
» Video cable
» Power cable
» Calibrator
» Calibrator tripod
» Workstation and camera stand (excluding chair)

Block Diagram


Operation Concept

(i) On-Site System Set Up

The pictorial view of the IFSS is shown on the right, it is mobile and can be set up within an hour at the site of operation.

(ii) On-Site System Calibration

The camera and the computer of the IFSS have to be calibrated before it can be used to scan and detect whether a person is having any fever. This is done with the aid of a calibrator unit, placed at a distance from the camera as illustrated in the above drawing. The time required to calibrate the IFSS is less than 15 minutes.

(iii) System Operation

The IFSS is operational upon completion of the system calibration. Every person will be scanned when they pass through the field view of the camera, “red spot” will appear on the image of the display screen to indicate a person is having fever. In normal practice, it requires only one operator to view the real-time image at the display screen and to identify the person who is detected with fever; another operator will help to filter and direct the person (who is detected to have fever) for further medical tests.


Specifications

Camera Performance (ThermalVision)
Detector Type Uncooled Microbolometer
Detector Spectral Range 8 – 12 microns
Array Format 320 H x 240 V pixels
Detector Size 45 x 45 microns
Operating Temperature Ambient temperature +/- 1 °C
Start up Time < 0.5 minutes
Frame Rate 25 frames per second
NETD < 100 mK
System Noise Level < 2 LSB
Corrected Uniformity < 0.1%
Optics Field of View 16° X 12°
Measurement Range (Radiometric Version)
Temperature Range 32 to 40°C
Grey Levels 0 to 256
Accuracy +/- 0.3°C
User Interface
Button Panel Control of Standard Camera Functions
RS-232 Interface for External PC Control
On Screen Display of Facial Temperature Distribution in color code
On Screen Display of Camera Status
Operation Timing
Start-Up Time < 1 hr
Readiness Time
(from 1 gantry to next)
30 mins ~ 45 mins
Calibration < 15 min

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