Monday, March 7, 2016

Digital Barriers THRUVIS- Passive THz

QUICK. RESPECTFUL. SAFE. TeraHertz scanners are the technology behind ThruVis, the world’s most advanced passive people-screening solution.
ThruVis provides a different approach to people screening. It employs our patented TeraHertz (THz)-scanning technology which was originally developed by the UK Government for satellite-based earth observation. ThruVis is able to ’see’ objects on the body, made of almost any material, from metals, to ceramics, plastics, currency, liquids, gels and powders - even under multiple layers of clothing. Because it uses an entirely passive sensor system, ThruVis units are completely safe in their operation as they are as harmless as a normal video camera.



THz scanning works by sensing the varying levels of natural THz energy emitted by people's bodies and using this to form a video picture. Concealed objects are seen, effectively, as cold or hot spots against warm bodies. As with normal cameras, ThruVis is able to see different-sized objects at different distances. Larger concealed objects are clearly seen on people at longer distances, while a person needs to be closer to the sensor for smaller objects to be seen.
The most important aspect of THz scanning is the specific frequency the scanner operates at. Scanners operating lower frequencies struggle with environmental conditions above 25 degrees and everyday infrastructure such as glass allowing the lower frequency to be swamped by too much signal. Lower frequency has more penetration but lesser resolution. However, deployment in uncontrolled environments is very hard.
A fundamental feature of ThruVis is that it operates at 250GHz (a quarter of 1THz). Scanners operating at this frequency have traditionally been considerably harder and more expensive to manufacture, but offer far superior performance than scanners operating at lower frequencies, as well as being much smaller physical size of device.
After 10 years of intensive reseacrh and development, ThruVis is now operationally proven to operate in warm humid conditions, detecting small objects through thick clothing, even when the object is only slightly colder than skin temperature. With its compact design, ThruVis is an ideal choice for an increasing range of activities.


ThruVis is designed to be simple to use. Operators use a laptop to control the scanner and to show a colour CCTV image – to provide visual content to the operator – overlaid with the THz scan image. Scanning occurs in real time and objects can be detected even as a person is moving – although resolution is improved when individuals are stationary. A number of usability features are provided to assist operators, including software designed to assist operators detect concealed items.
In addition to real-time imagery and automatic alerts, the software offers configurable recording functions. Operators are able to capture and store recordings to export for evidential purposes, as well as playing back ‘snapshots’ of recently recorded scan to assess quickly imagery that might have been missed by an operator in real time. An SDK is available for ThruVis products to enable full integration with wider security system architectures and third-party systems. Multiple Thruvis cameras can be networked to one operating PC, reducing the need to employ many security staff and keeping operational costs to a minimum.


Unlike many other types of scanner, ThruVis units do not require fixed installation or a large deployment footprint, thus being a disruptive technology. They can be ceiling or floor mounted, but can also be easily transported and deployed as a temporary screening measure for high-profile public events, including sports crowds, concert-goers or well attended public places. The actual unit is no bigger than a tower PC, and it can be enclosed into public surroundings easily, such as into discreet single or double bollards, advertising units, planters, or similar objects, depending on requirements.
The units are compact, lightweight and can be powered by standard mains or batteries – with a TS4 unit drawing just 80W of power. The simplicity of using the ThruVis system presents flexible new options for organisations to incorporate people screening into their operations without major changes to infrastructure or inconvenience to the people being screened as ThruVis does not delay mass movement of people or infringe privacy.


Compact people screening and software to detect person borne threats.


The ThruVis TS4C is the world’s most advanced compact people screening system, with unparalleled imaging quality and the capability to detect concealed objects at 4-10m. It can be deployed in both fixed and mobile formats, in covert and overt installations, and as a standalone screening capability or integrated within a wider security architecture ideal for public space protection or mobile use.
The TS4C has a large depth of field that allows continuous scanning and the ability to scan a person whilst in they are in motion. This makes it suitable for use in areas of high throughput and allows greater flexibility in deployment.

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