SNIFF- air series gas analyzers
The system represents the remote decision on management and communication of a gas analyzer with the operator or information system allowing to install the gas-analytical equipment onboard the UAV that considerably increases efficiency of application for a number of tasks.
The UAV design with expansion of functionality provides installation of replaceable blocks of target loading which treat:
- onboard thermal imager;
- gas spectrometer of wide range of measurement;
- HD-video camera-camera;
- scale and beta spectrometers.
Considering possibility of installation of replaceable blocks of target loading, the UAV complete set a gas analyzer and a radio spectrometer connected with the onboard store for the organization of local (onboard) connections for the purpose of preprocessing, storage and information transfer to the operator is optimum.
With installation of the special equipment, a problem of a complex extend from express control of parameters of chemical and radiation safety before selection of control tests for detailed studying in labaratories.
The section is in a development stage.
Circuitry and constructive decisions allowed to reach the necessary minima size allowing to place analytical systems onboard the UAV.
The mass of the developed gas analyzer with an external (removable) chamber with sensors does not exceed 250 g.
The linear sizes - no more than 150 x 250 mm.
The UAV with the equipment installed onboard a photo and video, allows to place also and gas-analytical system that considerably increases functionality of use of aircraft.
Control tests are carried out with an experimental sample of a gas analyzer and BLA Omega 421-22.
Are a part of an experimental sample:
- experimental sample of a gas analyzer;
- 8th channel analytical system of semiconductor sensors;
- system of sampling;
- BLA Omega 421-22;
- control system of the Omega 421-22 UAV;
- personal computer.
Processing and display of information in an experimental sample of a gas-signaling device is carried out by means of the personal computer.
Data exchange is carried out on Wi-Fi transport with the TCP/IP protocol.
Tests are carried out on techniques of detection of substances-analysis in actual practice. Measurements are taken in compliance with algorithm of work of gas-sensitive sensors.
The gas analyzer established on the UAV joined and within 2 - 3 minutes was in a condition of expectation of establishment of communication. Communication between a gas analyzer and the personal computer is carried out to the established IP address. Management, processing of results of measurements and their visualization was carried out with the help of software XPERT " 290". The present software allows: to control a condition of a gas analyzer on the scale of real time, to determine time of continuous work, to operate the activator of an expense (test delivery).
As "an infection source" are applied:
1 - a medicine the "Corvalol" evaporating under normal conditions.
The combined preparation containing ethyl air α-bromvalirian acids - 2%, phenobarbital - 1,82%, a natra caustic - 3%, peppermint oils - 0,14%, the mixes of alcohol of ethyl 96% and water distilled to 100%. Substances anolytes are: ethyl alcohol, ethyl air α-bromvalirian acids and phenobarbital;
2 - solution of ammonium chloride, evaporating under normal conditions.
Anolyte is ammonia;
3 - products of an anaerobic fermentation of a bird's dung - biogas. Main components:
CH4 methane - to 50%, CO2 carbon dioxide to 30%, H2S hydrogen sulfide - to 2%, NH3 ammonia - to 1%.
Anolytes are methane, hydrogen sulfide, carbon dioxide and a hydroxide of ammonium.
Prototypes of onboard gas analyzers
Success of the use of the UAV, from the gas-analytical system placed on its board, depends on metrological characteristics and technical parameters of the used equipment.
Tactical technical characteristics of the developed and made gas analyzers correspond:
1. The mass of the control unit, processing and information transfer does not exceed 200 - 400.
2. The mass of the gas-analytical block does not exceed 200 g.
Requirements for items 1 and 2 are caused by restriction of payload of the estimated UAV which, as a rule, does not exceed 2 - 3 kg.
3. Climatic conditions of work:
- ambient temperature: minus 20 - + 50os;
- atmospheric pressure: 1 KPAS - 400 KPAS;
- relative humidity: 20 - 98%.
4. Technical parameters:
- supply voltage of 5 - 30 V
- power consumption, no more than 30 W;
- weight full, no more than 200 g;
- linear sizes, no more than 150х150 mm;