An intake particle detection system for recognising and localising a fire and/or the development of a fire in one or more monitored areas comprising - a fluid conduit system with at least one pipe line and/or hose line which opens into the one or more monitored areas (i) via a plurality of intake openings for the respective removal of a quantity of test fluid and, a intake device, which is connected to the at least one pipe line and/or hose line in a manner which conducts fluids in order to generate a test fluid flow along the at least one pipe line and/or hose line as well as - an optical fibre system with a plurality of local detector modules which are each assigned to at least one intake opening and are designed for the local detection and forwarding of scattered light which is scattered by scattered particles and/or smoke particles that are present in the respective monitored area (i) and the test fluid flow and/or for the detection and forwarding of forwarded light passing through the scattered particles and/or smoke particles and are arranged within the test fluid flow and with at least one optical fibre, which is in a light-conducting connection with the local detector modules and a central analysis device for analysing the scattered light and/or forwarded light that, in each case, is detected and forwarded by the local detector modules, and wherein, in order to assign the forwarded scattered light and/or forwarded light to the respective local detector modules, either - the central analysis device comprises at least one modulation means for modulating the light emitted by at least one light source and for assigning the scattered light and/or forwarded light detected by at least one light receiver to the plurality of local detector modules, or - the local detector modules are arranged along the at least one pipe line and/or hose line and are each assigned to a predetermined number of intake openings, wherein a desired dilution ratio (V i) of the test fluid flow can be defined as required at the respective local detector module, or - the optical fibre comprises respective first and second fibre optical waveguides (311, 312) associated with the local detector modules. - a fluid conduit system with at least one pipe line and/or hose line which opens into the one or more monitored areas (i) via a plurality of intake openings for the respective removal of a quantity of test fluid and, a intake device, which is connected to the at least one pipe line and/or hose line in a manner which conducts fluids in order to generate a test fluid flow along the at least one pipe line and/or hose line as well as - an optical fibre system with a plurality of local detector modules which are each assigned to at least one intake opening and are designed for the local detection and forwarding of scattered light which is scattered by scattered particles and/or smoke particles that are present in the respective monitored area (i) and the test fluid flow and/or for the detection and forwarding of forwarded light passing through the scattered particles and/or smoke particles and are arranged within the test fluid flow and with at least one optical fibre, which is in a light-conducting connection with the local detector modules and a central analysis device for analysing the scattered light and/or forwarded light that, in each case, is detected and forwarded by the local detector modules, and wherein, in order to assign the forwarded scattered light and/or forwarded light to the respective local detector modules, either - the central analysis device comprises at least one modulation means for modulating the light emitted by at least one light source and for assigning the scattered light and/or forwarded light detected by at least one light receiver to the plurality of local detector modules, or - the local detector modules are arranged along the at least one pipe line and/or hose line and are each assigned to a predetermined number of intake openings, wherein a desired dilution ratio (V i) of the test fluid flow can be defined as required at the respective local detector module, or - the optical fibre comprises respective first and second fibre optical waveguides (311, 312) associated with the local detector modules.