Method and device for detecting explosive-substance particles in a gas flow
AssigneeEADS Deutschland GmbH
InventorsSebastian Beer, Thomas Ziemann, Alois Friedberger
Life of this patent
Estimating the term…
Abstract
A method for detecting explosive substance particles in a gas flow includes passing the gas flow through an adsorption net for a specified time period so as to adsorb explosive-substance particles in the gas flow on the adsorption net. The adsorption not includes a microfilter having a pore size that is smaller than the particle size of the explosive-substance particles. The adsorption net is heated to a heating temperature so as to desorb the explosive-substance particles from the adsorption net. A gas flow comprising the desorbed explosive-substance particles is supplied to a detector so as to detect the explosive-substance particles.
Claims14
1-10. (canceled)
A method for detecting explosive substance particles in a gas flow, the method comprising:
- passing the gas flow through an adsorption net for a specified time period so as to adsorb explosive-substance particles in the gas flow on the adsorption net, the adsorption net including a microfilter having a pore size that is smaller than a particle size of the explosive-substance particles;
- heating the adsorption net to a heating temperature so as to desorb the explosive-substance particles from the adsorption net;
- supplying a gas flow comprising the desorbed explosive-substance particles to a detector so as to detect the explosive-substance particles.
A device for detecting explosive-substance particles in a gas flow, the device comprising:
- a gas flow path configured to receive a gas flow carrying explosive-substance particles;
- a microfilter disposed in the gas flow path and having a particle size that is smaller than a particle size of the explosive-substance particles so as to adsorp the explosive-substance particles thereon when the gas flow passes through the microfilter, the microfilter including a heating device configured to heat the microfilter to a heating temperature so as to desorb the explosive-substance particles from the microfilter;
- a detector disposed downstream of the microfilter;
- and
- a control device configured to control a temperature of the microfilter.
A device for detecting explosive-substance particles in a gas flow, the device comprising:
- a flow duct configured to receive a gas flow carrying explosive-substance particles;
- a microfilter disposed in the flow duct and having a particle size that is smaller than a particle size of the explosive-substance particles so as to adsorp the explosive-substance particles thereon when the gas flow passes through the microfilter;
- a circulation duct that is configured to be blocked off from the flow duct during a collection mode and connected to the flow duct during a detection mode so as to form a closed annular duct;
- and
- a detector disposed in the circulation duct.
A method for producing a microfilter for use in a device for detecting explosive-substance particles in a gas flow, the method comprising forming pores in the microfilter by a photolithography etching process.
Dependencies are inferred from the claim text.