This measuring apparatus combines the visiblilite and of the rainfall for determining the distance of visibility, the quantity and the type of rainfall

摘要

Apparatus for measuring the visibility and precipitations which contains a light emitter, at least one receiver in an arrangement of the diffusion towards the front and an electronic processing, characterized in that face of the light emitter (1) are arranged a first receiver (2), a second receiver (3) according to an angular range of diffusion towards the front of 20degre to 40degre, a third receiver (4) of 70degre to 120degre and a fourth receiver (5) of 140degre to 150degre, in front of the light emitter (1) is disposed a modulation generator (15), and each receiver (2, 3, 4, 5) is in connection with the electronic processing (33), by an amplifier for the recovery (6, 7, 8, 9) and a synchronous rectifier (10, 11, 12, 13).