RU43975U1 - WIND PARAMETER - Google Patents

Abstract

Using:

The wind parameter meter can be used for any ground-based measurements of wind parameters. The invention:

The wind parameter meter includes a wind parameter sensor 1, a communication line 2, a measuring unit 3, while the wind parameter sensor 1 consists of a speed former 4, a direction code generator 5, an encoding unit 6 and a current modulator 7, and the measuring unit 3 consists of a DC power source 8, a sensor signal isolation unit 9, and a sensor 10 signal processing unit.

Description

The proposed utility model relates to the field of hydrometeorology, namely to devices for measuring wind speed and direction, and can be used for any ground-based measurements of wind parameters.

A known sensor of wind parameters, including rigidly oriented helical wind receivers and converters of speed and direction of rotation of wind receivers. This sensor generates information about the projections of the wind vector on the axis of the wind receivers. When the wind direction is perpendicular to the axis of the wind receiver, the screw does not rotate. The rotation of the screw begins when the wind direction changes by a certain angle, and the lower the wind speed, the greater this angle, which determines the “dead zone” of the wind receiver (1).

The disadvantage of this sensor is the low initial sensitivity due to the presence of a "dead zone" in wind receivers.

The closest technical solution is an anemorumbometer, including a wind parameter sensor connected via a communication line to the measuring unit.

The wind parameter sensor includes a helical wind receiver mounted on a horizontal shaft, which is connected through a bevel gear to a vertical shaft, and also a wind vane mounted on a horizontal shaft casing. Magnets are fixed on the vertical shaft, and reed switches are mounted on the vertical shaft case, the combination of which is a speed pulse shaper. The output signal of this shaper is two pulse sequences with a variable frequency proportional to wind speed. Impulses are formed at the moment the reed switches are closed when a magnet passes by them. Wind direction measurement is based on measuring the phase shift between the pulses of two output

pulse sequences, which is proportional to the angular position of the flyboar from the conditional zero direction. In this case, the measuring unit includes a sensor signal processing unit, in which information from the wind parameter sensor is processed (2).

The disadvantages of this meter include a low initial sensitivity for wind speed and direction, due to the presence of mechanical transmission wind parameters in the sensor, as well as the small distance of the sensor from the measuring unit with a three-wire communication line due to the potential method of transmitting a frequency-phase signal subject to noise pointing towards the communication line.

The technical result of this solution is to increase the initial sensitivity and increase the distance of removal of the sensor.

To achieve this technical result in a wind parameter meter including a wind parameter sensor connected via a communication line with a measuring unit including a sensor signal processing unit, while the wind parameter sensor includes a speed pulse generator, a helical wind receiver mounted on a horizontal shaft located in the housing on the end of which a fly-bar is fixed, and in the middle part of the body there is a tube interacting with a vertical shaft fixed in the casing, a measuring unit equipped with a DC power source and a sensor signal extraction unit connected in series to a two-wire communication line, and the output of the sensor signal extraction unit is connected to an input of the sensor signal processing unit, while the wind parameter sensor is equipped with a current modulator, a coding unit, a direction code generator , a code cylinder and a reflector mounted on the end of the horizontal shaft and interacting with the speed pulse generator located in the upper part of the vert the shaft, while the code cylinder is fixed in the tube and interacts with the direction code generator installed in the casing, and the outputs of the speed pulse generator and the direction code generator are connected to the inputs of the encoding unit, the output of which is connected to the communication line through the current modulator, while in the sensor of wind parameters, the speed pulse shaper can be made, for example, in the form of a photo-emitter and a photodetector interacting with a reflector, and the direction code shaper could s is, for example, in the form of pairs of photodetectors fotoizluchateley and interacting via coding cylinder, the number of pairs corresponds to the number of code bits direction.

Figure 1 shows the functional diagram of the meter, figure 2 is a General view of the sensor.

The wind parameter meter (Fig. 1) contains a wind parameter sensor 1, a communication line 2, a measuring unit 3, while the wind parameter sensor 1

consists of a pulse shaper of speed 4, a shaper of direction code 5, a coding unit 6, and a current modulator 7, and the measuring unit 3 consists of a DC power supply 8, a sensor signal extraction unit 9, and a sensor signal processing unit 10.

The wind parameter sensor (Fig. 2) comprises a housing 11, a helical wind receiver 12, a wind vane 13, a horizontal shaft 14, a reflector 15, a tube 16, a vertical shaft 17, a casing 18, a speed pulse generator 4, a code cylinder 19, a direction code generator 5.

The wind meter measures as follows. A two-wire communication line 2 from the measuring unit 3 transfers the DC voltage to the wind parameter sensor 1 and the same information in the form of a code message is transmitted in the reverse direction by modulating the current in the line.

The current modulator 7 is controlled from the coding unit 6, which receives pulses from the pulse shaper speed 4 and the parallel code from the shaper code direction 5.

The coding unit counts the pulses from the shaper 4 at an interval of 1 s and every second gives a pulse signal to the modulator 7 in the form of a sequential code that contains information about the number of incoming pulses from the shaper 4 and the code value recorded by it from the shaper 5.

The current modulator 7 when transmitting a logical zero generates a "zero" current in the line, and when transmitting a logical unit generates an increased current value.

In the open circuit between the DC power source 8 and the current modulator 7, a sensor signal extraction unit 9 is turned on, which converts the current signal in the line into a potential signal and transfers it to the input of the sensor signal processing unit 10.

In the wind parameter sensor, information about the rotation speed of the helical wind receiver 2 (proportional to the wind speed) is generated as follows.

Together with the wind receiver 2 at the end of the horizontal shaft 4, a reflector 5 rotates, made, for example, in the form of a cube with polished faces. In the speed pulse shaper 4, the photo-emitter and photodetector are directed upward towards the reflector. When the face of the reflector passes a position perpendicular to the optical axis of the photo emitter and photodetector, the latter generates a pulse. Thus, in one revolution of the screw, a pulse shaper of speed 4 produces four pulses.

Information about the angular position of the flyboar (corresponding to the direction of the wind) is generated using the code cylinder 19, which rotates together with the flyboar.

The direction code generator 5 is a pair of photo emitters and photodetectors arranged vertically in a row. Moreover, the photo emitters are installed on the inside of the code cylinder, and the photodetectors on the outside are opposite to each other. The circumferential cylinder has vertically arranged, in accordance with the placement of pairs of photo emitters and photodetectors, translucent holes in accordance with the selected angle coding method, for example, in the Gray code.

When turning the flyboar, the position of the code cylinder changes and the corresponding code is set at the output of the direction code generator.

Sources of information taken into account when preparing the application:

1. RF patent No. 203 0749 MKI G 01 P 5/01, 1992

2. Handbook of hydrometeorological instruments and installations "Hydrometeoizdat", L., 1976, p. 19, Anemorumbometer M-63M-1.

Claims (3)

1. A wind parameter meter, including a wind parameter sensor, connected through a communication line with a measuring unit including a sensor signal processing unit, while the wind parameter sensor includes a speed pulse generator, a helical wind receiver mounted on a horizontal shaft located in the housing, at the end of which a flygar is fixed, and in the middle part of the body there is a tube interacting with a vertical shaft fixed in the casing, characterized in that the measuring unit is provided in series with dyed DC power source and sensor signal extraction unit connected to a two-wire communication line, and the output of the sensor signal extraction unit is connected to the input of the sensor signal processing unit, while the wind parameter sensor is equipped with a current modulator, coding unit, direction code generator, code a cylinder and a reflector mounted on the end of the horizontal shaft and interacting with the speed pulse shaper located in the upper part of the vertical shaft, while the cylinder is fixed in a tube and interacts with a direction code generator installed in the casing, and the outputs of the speed pulse generator and the direction code generator are connected to the inputs of the encoding unit, the output of which is connected to the communication line through a current modulator. 2. The wind parameter meter according to claim 1, characterized in that in the wind parameter sensor, the speed pulse generator is made in the form of interacting by means of a reflector of a photoemitter and a photodetector. 3. The wind parameter meter according to claim 1, characterized in that in the wind parameter sensor the direction code generator is made in the form of pairs of photoemitters and photodetectors interacting through a code cylinder, the number of pairs corresponding to the number of bits of the direction code.