Earthwork Solutions, LLC 1/30/2025

Fulton Street Pedestrian Bicycle Corridor PAGE 111 OF 114 CONTRACT FEDERAL AID # TAP-0420(026) WO #3785 September 6, 2024 Category 2: Sensitive information 9-29.18(3)C Thermal Sensor 1 2 The Thermal Traffic Sensor shall not depend on any visible or invisible 3 (infrared) illumination or image intensifier to “see” i.e. produce images. The 4 Thermal Traffic Sensor shall be totally passive and not produce any energy or 5 emit light in any bandwidth. The Thermal Traffic Sensor shall allow the user 6 to clearly identify images in the total absence of light. 7 The Thermal Traffic Sensor shall utilize a Vanadium Oxide (VOx ) uncooled 8 microbolometer sensor responding in the LWIR (Long Wave Infrared) spectral 9 range of 7 – 14 μm, which is beyond what is visible to the human eye. 10 The Thermal Traffic Sensor shall be based on Vanadium Oxide (VOx) 11 microbolometer detector technology and shall not be susceptible to 12 permanent damage after imaging the sun. This is in contrast to some 13 systems based on amorphous silicon detector technology, which can be 14 permanently damaged when viewing the sun or even reflections of the sun. 15 The Thermal Traffic Sensor shall not utilize shutters to prevent damage from 16 the sun, but rather the Thermal Traffic Sensor shall provide uninterrupted 17 video which shall be required for traffic and ITS installations. 18 The Thermal Traffic Sensor shall not utilize dynamic apertures to protect the 19 image sensor because these mechanisms reduce sensitivity for an extended 20 period of time, thus reducing the Thermal Traffic Sensors performance, which 21 shall not be acceptable for traffic installations. 22 The Thermal Traffic Sensor shall provide a thermal optics that automatically 23 adjust to background thermal changes, and therefore do not require re -24 adjustment and/or thermal refocusing. 25 The Thermal Traffic Sensor shall not be susceptible to “image blooming” 26 caused by bright lights as are image intensifiers and visible spectrum 27 cameras. 28 The Noise Equivalent Temperature Difference (NETD) is the measure of the 29 smallest object temperature that can be detected by the thermal image sensor 30 relative to the system noise. The measurement is usually quantified as an mK 31 value. This is the most common Figure of Merit of a thermal imaging system 32 and a true measurement of the thermal camera’s sensitivity. The Thermal 33 Traffic Camera image sensor shall provide a NETD of <50mK f/1.0 or lower. 34 The Thermal Traffic Sensor shall include Auto Digital Detail Enhancement 35 (Auto DDE) which is an advanced non-linear image processing algorithm. 36 The Auto DDE function is fully automatic and requires no input or adjustment 37 from the user. The Auto DDE shall enhance the image detail to match the 38 total dynamic range of the original image allowing details to be visible to the 39 user even in scenes with low or high thermal contrast. Auto DDE will increase 40