Temperature detection thermal camera
The dual purpose Wisenet TNM-3620TDY from Hanwha Techwin Europe comes with QVGA thermal imaging and high-definition cameras, for COVID-19-related work. The TNM-3620TDY is a bi-spectrum, multi-channel device with a QVGA-class thermal imaging camera and a 2-megapixel video surveillance camera. As such, it can detect heat while providing visual verification of people within its field of view.
In body temperature mode, the thermal imaging camera can to estimate a person’s temperature within a range of 30 to 45 degrees C, with +/-0.5 degrees C accuracy. When supported by black body technology, the accuracy increases to +/-0.3 degrees C, allowing the product to provide a strong indication that a person may have a fever, the product developers say.
Offering support for Deep Learning AI-based face detection, the device can measure the temperatures of up to ten people in real time at a distance of up to 3m. Operators can choose to view either the captured thermal images or standard high-definition video images.
The product is compliant with a series of device technical standards for the safety and essential performance of medical electrical equipment, as published by the International Electrotechnical Commission (IEC). Hanwha Techwin has completed the FDA facility registration process and device registration for the TNM-3620TDY in respect of FDA 510(k) clearance is in progress.
In normal Radiometric mode, the thermal imaging camera with a high degree of accuracy detects and measures changes in temperature within minus 20 degrees C to 130 degrees C range, with users able to set up detection zones to cover specific areas of interest within the camera’s field of view. This provides a tool which generates alerts when there is a threat of fire in recycling, waste management and landfill type facilities, where spontaneous combustion may occur. A detected change in temperature may also be a warning that machinery in factories, processing plants, cold stores and utilities, is faulty. A spot detection feature enables operators, via a web viewer, to click on any pixel within an image to obtain a measurement of the temperature of the area covered by that pixel.
The TNM-3620TDY supports H.265, H.264 and MJPEG compression formats, as well as WiseStream II, a complementary compression technology which dynamically controls encoding, balancing quality and compression, according to movement in the image. Bandwidth efficiency is improved by up to 75 per cent it is claimed, compared to current H.264 technology when WiseStream, which is unique to Wisenet cameras, is combined with H.265 compression. Other features include:
– The 2-megapixel video surveillance camera features a set of Intelligent Video Analytics which include directional detection, motion detection, enter/exit, virtual line, audio detection and cameras tampering detection.
– The TNM-3620TDY has a Micro SD/SDHC/SDXC slot which allows up to 256GB of video or data to be stored at the edge should there be disruption to the network. Video evidence, which potentially might have been lost, can therefore be retrieved when the network connection has been restored.
– PoE+ (IEEE802.3at) and 12VDC.
Uri Guterman, Head of Product and Marketing for Hanwha Techwin Europe said: “Regretfully, in terms of the reputation of the video surveillance industry, some so called ‘fever screening’ solutions devised by other manufacturers, have attracted negative publicity. This is because they have been oversold in terms of what they are capable of delivering.
来自Hanwha Techwin公司欧洲公司的两用途的Wisenet TNM-3620TDY型、具有QVGA分辨率的高清
热成像摄像机，可被用于与COVID-19相关的排查检测工作。TNM-3620TDY是一种双频谱，多通道设备，具有一个QVGA级热成像摄像头和一个2百万像素
视频监控摄像头。这样，它可以检测热量，同时提供对其视野内人员的视觉验证。
在测温模式下，热感摄像机可以以+/- 0.5摄氏度的精度估算30到45摄氏度范围内的人的温度。产品开发人员说，当得到黑体技术的支持时，其准确度将提高到+/- 0.3摄氏度，从而使该产品能够更好地检测出有发烧的迹象人员。
该设备支持基于深度学习AI的面部检测，可以在3m的距离内实时测量多达十个人的体温。操作员可以选择查看捕获的热图像或标准高清视频图像。
该产品符合国际电工委员会（IEC）发布的有关医疗电气设备安全性和基本性能的一系列设备技术标准。Hanwha Techwin已完成FDA设施注册流程，并且正在就FDA 510（k）许可进行TNM-3620TDY的设备注册。
在常规辐射测量模式下，高精度的热成像摄像机可检测和测量负20摄氏度至130摄氏度范围内的温度变化，用户可以设置检测区域以覆盖摄像机领域内的特定关注区域看法。当在回收，废物管理和垃圾填埋式设施中可能发生自燃的情况下发生火灾威胁时，它可以提供了一种生成警报的工具。检测到的温度变化也以对工厂、加工厂、冷库和公用设施中的机械故障发出警报。点检测功能使操作员可以通过Web查看器单击图像中的任何像素，以获得该像素所覆盖区域的温度测量值。
TNM-3620TDY支持H.265，H.264和MJPEG压缩格式，以及WiseStream II，WiseStream II是一种互补的压缩技术，可以根据图像中的运动动态控制编码，平衡质量和压缩。与当前的H.264技术相比，Wisenet摄像机独有的WiseStream与H.265压缩相结合，带宽效率提高了75％。其他功能包括：
– 具有一组智能视频分析功的2百万像素的视频监控摄像机能，其中包括方向检测，运动检测，进入/退出，虚拟线路，音频检测和摄像机篡改检测。
– TNM-3620TDY带有Micro SD / SDHC / SDXC插槽，如果网络中断，最多可以在边缘存储256GB的视频或数据。恢复网络连接后，可以检索可能丢失的视频证据。
– PoE +（IEEE802.3at）和12VDC。
