An anemometer according to the present disclosure includes: a support strut extending in a vertical direction; a rotary member connected to an upper portion of the support strut so as to be rotatable about an axis of the support strut; a swing arm having a proximal end connected to the rotary member and a distal end swingable in the vertical direction; a slider that is slidable along the support strut and is rotatable; a link having one end connected to the swing arm at a position on a more distal end side with respect to the proximal end of the swing arm and having the other end vertically rotatably connected to the slider; a wind receiver provided on at least one of the distal end of the swing arm and the one end of the link and is configured to rotate the rotary member by a wind in a horizontal direction; and a scale attached to a side surface portion of the support strut so as to allow the slider to indicate a wind speed.

A recording system for evaluating and analyzing wind resources includes centrifugal mechanism, which includes ring groove, curved block, vertical block, transmission plate and support block; quantitative mechanism, which includes output cavity, output shaft, arc bar, extension shaft and baffle; recording mechanism, which includes the third gear, the first magnet, counting plate and reading pointer; wind power utilization mechanism, which includes power generation shaft, fan blade, generator and power supply; the device is free to rise and fall, suitable for The terrain to be measured can automatically record the wind resources in the survey area, and convert the wind resources into electric energy, so that the user can record the data of wind resources in case of poor illumination, and the device is easy to read and operate. The user only needs to observe regularly.

A mechanical coupling for rotary devices, whereby a wind vane or other rotary tool, can be replaced without the use of a tool. In a preferred embodiment, the invention provides a coupling arrangement for a rotary device and a spindle supported for rotation, the coupling being enabled by a resilient body which acts upon a spheroidal locking member such as a ball bearing. In particular, the present invention provides a coupling arrangement for a wind vane or an anemometer rotating body comprising impeller cups, which impeller cups and rotating body are required for removable fitment, without the use of tools.

An overhead line monitoring method includes generating evaluable measured variables on the basis of wind speeds at a plurality of measurement points. Therein, wind energy at a measurement point is converted into a rotational movement of a rotor of a measuring transducer, and the rotational movement is converted into a periodic, local deformation of at least one fiber optic cable running parallel to the overhead line at the measurement point. The method further includes calculating the wind speeds at the measurement points by evaluating periodic changes in signal attenuation, caused by the deformation, in the fiber optic cable, and assessing the operating state of the overhead line on the basis of the wind speeds.

An anemometer according to the present disclosure includes: a support strut extending in a vertical direction; a rotary member connected to an upper portion of the support strut so as to be rotatable about an axis of the support strut; a swing arm having a proximal end connected to the rotary member and a distal end swingable in the vertical direction; a slider that is slidable along the support strut and is rotatable; a link having one end connected to the swing arm at a position on a more distal end side with respect to the proximal end of the swing arm and having the other end vertically rotatably connected to the slider; a wind receiver provided on at least one of the distal end of the swing arm and the one end of the link and is configured to rotate the rotary member by a wind in a horizontal direction; and a scale attached to a side surface portion of the support strut so as to allow the slider to indicate a wind speed.