General Description
Second Sight® MS is a stand-off real time gas cloud detector, designed for chemical area surveillance in open field and harsh conditions. Second Sight® MS automatically detect, identify and monitor all known clouds of dangerous gases (nerve gazes or vesicants) at a distance up to 5 km. In case of detection, it raises an alarm and displays real-time visualization of the scene. This enables efficient management of the chemical event. Its patented infrared process allows a wide field of view with a very high detection probability with night and day surveillance capability,. Second Sight can be used by CBRN team on the field (battery), for base surveillance or mounted on vehicles or ships.
Technical Description
Second Sight® MS uses an uncooled IR microbolometer device. Its technology relies on different absorption lines of gases in the IR spectrum. The equipment continuously analyses the absorption of the scene compared with the background. Each gas has its own absorption spectrum and can present typical absorption lines in infra-red bands II (3 to 5 µm MWIR) and bands III (8 to 14 µm LWIR). Second Sight® operates in band III, in order to use the particular lines which enable them to be identified from several gases. The Second Sight® allows real time visualization of gas cloud: the image processing algorithms highlights the presence of a gas cloud on the targeted line. The evaluation of the quantity of gas is carried out by a three differential infra-red imaging process: spatial, spectral, and temporal fields. Spectral differentiation exploits the spectral nature of the gas, which is isolated through the successive utilization of several filters. The comparison of channels enables a value corresponding to the gas cloud concentration. In particular, spatial differentiation enables the luminescence of the gas cloud to be eliminated and to only take its transmission into account. This characteristic enables Second Sight® to detect the gas even when it is at an ambient temperature.
Evaluation Criteria
THROUGHPUT:
- Detection is instantaneous
- Continuous operation with no defined runs
- System is continuous and provides real time analysis with no defined tests/samples
- The system or device is currently fully automated
- Device or system is intended for multiple detection assays
- 0-1 solutions, buffer, eluents, and/or reagents
- 0 components
- 5-10 minutes is required for set-up
- Automatic detection
LOGISTICS:
- A day of training and technical skills are required
- Approximately the size of a carry-on luggage suitcase
- Between 25 and 50 kg
- Wireless and wired connections are available
- System or device uses batteries
- 4-8 hours battery life
OPERATIONS:
- Can be used from < -21°C to > 42°C (All temperatures)
- Performance is not influenced by relative humidity
- Greater than 10 years expected life
- Results can be viewed in real-time
- The system or device is currently fully autonomous
- The system software is closed and not available
- for modification
- The system hardware is closed and not available
- for modification
DETECTION:
- This system does not test liquids
- Superior specificity. System has a false alarm rate
- approaching zero (~0%)
- System currently can identify aerosolized chemical agent
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