JPH0233101B2 - FUKOFUSOKUKEIOYOBISONOENZANSOCHI - Google Patents

Description

[Detailed description of the invention]

(Technical Field of the Invention) The present invention relates to an anemometer that calculates wind direction and wind speed by reading code strings generated by code elements on the periphery of a disk rotating by the wind, and a calculation device thereof. It is something. (Prior Art) Generally, wind direction and wind speed are measured separately using separate means. For example, an anemometer as shown in FIG. 9 is known as a device for optically measuring wind speed, and a wind vane as shown in FIG. 10 is known as a device for measuring wind direction. The anemometer shown in FIG. 9 includes a wind cup 31 and a wind cup 3.
a circular plate 33 whose center of rotation is fixed to one rotating shaft 32, and a plurality of holes 34 are provided at equal intervals on the periphery;
Optical code reading means (for example, composed of optical fiber) 3 in which a light transmitting surface and a light receiving surface face each other with the peripheral edge of the hole 34 arrangement of the disk 33 sandwiched therebetween.
5, the main part of which is constituted by a disk 33 which rotates as the wind cup 31 rotates, repeatedly connects and disconnects the optical transmission path of the code reading means 35 at the hole 34 forming part. The wind speed is calculated from the period of the generated optical pulse signal. The wind vane shown in FIG. 10 includes a wind vane 41,
The center of rotation is fixed to the rotating shaft 42 of the wind direction vane 41, and the light transmitting surface and the light receiving surface are sandwiched between a disk 43 with a hole 44 provided at one location on the periphery and the periphery of the disk 43 where the hole 44 is formed. Multiple pairs with opposing surfaces corresponding to the azimuth resolution of the wind direction (for example, with a resolution of 10° (angle)
The main part thereof is composed of 36 pairs of optical code reading means (for example, composed of optical fibers) 45, and it is determined which of the code reading means 45 detects the hole 44 of the disk 43 (i.e., which one of the code reading means 45 detects the hole 44 of the disk 43). The directional direction of the wind direction vane 41, that is, the wind direction, is measured by the hole 44 located at the code reading means. (Problems to be Solved by the Invention) According to the above-mentioned prior art, wind direction measurement and wind speed measurement must be performed in separate processes. In particular, wind direction measurement requires a large number of code reading means, and the hardware is expensive. be complex and expensive;
There are other problems. In recent years, advances in integrated circuit technology have made it possible to perform relatively complex data processing using inexpensive hardware. Focusing on this point, the present invention makes full use of the data processing of the CPU (microprocessor), detects wind direction and wind speed data with the same code reading means, and performs wind direction measurement and wind speed measurement through simultaneous processing. Another object of the present invention is to provide an anemometer and its arithmetic device in which the means for detecting and transmitting data is particularly simplified. (Summary of the Invention) For the above purpose, the present invention provides a wind direction anemometer in which the wind cup and the wind direction vane can rotate around the same axis and independently of each other, and the wind cup and the wind direction vane can be rotated independently of each other, and are connected to the rotating shafts of the wind cup and wind direction vane so that they rotate in opposite directions when the wind cup rotates, and in the same direction when the wind direction vane rotates, and each of the two disks has a , binary code elements are arranged around its periphery, and the code reading means is
The signal sending surface and light receiving surface are provided so as to face the binary code element array portion of the two discs, and the wind direction is determined from the code array read by the code reading means from the rate of change of the code. The wind speed is calculated and determined, and
The device provided by the present invention as a calculation device for this wind direction and speed meter integrates the input time of one value of the binary code string inputted from the wind direction and speed meter, calculates the wind speed from this cumulative value, and calculates the wind speed. A clock pulse synchronized with the input speed of the binary code string is generated based on the wind speed value, and the clock pulse is used to store the input code string by a set number of bits in the received code storage section. The wind direction is calculated by comparing the binary code string with a wind direction code stored in advance as a binary code string. (Structure of the embodiment) Figs. 1 to 6 are diagrams for explaining an embodiment of the present invention, and Figs. 1 and 2 are a perspective view and a cross-sectional view showing the structure of the wind direction and speed meter, respectively, and Fig. 3 4 are perspective views showing other embodiments of the anemometer, FIG. 5 is a block diagram of the arithmetic device, and FIG. 6 is a diagram showing the memory in the wind direction code storage section of the arithmetic device. In addition, in FIG. 2, the data code generation mechanism portion is shown in an enlarged scale. First, the structure of the anemometer will be explained. In Figures 1 and 2, 1 is the first wind cup,
2 is a second wind cup, 3 is a wind direction vane, 4 is a first code generation disk (hereinafter referred to as an encoder plate), 5
is a second encoder plate, 6 is a gear, 7 is a code reading means, and 8 is a measuring device. The first wind cup 1 and the second wind cup 2 have a rotating shaft 10
Four hemispherical cups 102, 202 are arranged at equal angles with a center point 1, 201, which itself has a well-known shape, and the first and second cups 1, 2 are mutually arranged. The cups 102 and 202 have separate rotating shafts 101 and 201 having the same axis, and the cup 102 and the cup 202 are set in opposite directions and rotate in opposite directions when exposed to wind. The wind direction vane 3 itself has a well-known fletching shape, and its rotating shaft 301 has the same axis as the rotating shafts 101, 201 of the first and second wind cups 1, 2. Consists of separate shafts. The first encoder plate 4 and the second encoder plate 5 have binary code element arrays 401 and 50 on their peripheries.
1. In the case of the embodiment shown in FIG. 1, the perforated portion 401a,
501a and non-perforated portions 401b, 501b are composed of discs arranged in random numbers, and the rotational axes 101,
It is fixed at 201. Further, annular racks 402, 502 are fixed to the inner sides of the first and second encoder plates 402, 502, which are opposed to each other. A gear (pinion) 6 is also provided, and its rotating shaft 601 is fixed to the rotating shaft 301 of the wind direction vane 3 from a direction perpendicular to its axis. The portions of the first and second encoder plates 4 and 5 where the binary code element arrays 401 and 501 are formed are provided with a signal sending surface and a receiving surface of the code reading means 7, sandwiching the portions, respectively, in the embodiment shown in FIG. In this case, the light transmitting surface 701 and the light receiving surface 702 are set to face each other. The code reading means 7 is an optical means in the embodiment shown in FIG. 1, and is constructed as follows. That is, a light emitting element 705 and a light receiving element 706 are attached to the rear ends of a pair of light guides 703 and 704 whose tips are a light transmitting surface 701 and a light receiving surface 702, and the light emitting element 705 is continuously emitted by the measuring instrument 8. The optical signal received by the light receiving element 706 is converted into an electric signal and input to the measuring instrument 8. Furthermore, the light guides 703 and 704 are made of, for example, optical fibers. 3 and 4 are diagrams showing other embodiments of the code reading means 7. FIG. The embodiment shown in FIG. 3 uses a sound wave, for example, an ultrasonic code, as the code reading medium, and the light transmitting surface 701 and the light receiving surface 702 in the embodiment of FIG. The wave device 707 and the wave receiver 708 are connected to the light guides 703 and 704.
wave guides 709 and 710 respectively in place of
, a sonic oscillator and a sonic receiver (both not shown) are used in place of the light emitting element 705 and the light receiving element 706, respectively. Further, although the embodiment shown in FIG. 4 uses light as the code reading medium, one encoder plate 4
The light transmitting surface 701 and the light receiving surface 702 at the tips of the light guides 703 and 704 are arranged side by side, and the binary code element array 401 of the first encoder plate 4 is read by reflecting light. A non-porous part 401c and a perforated part 401d are attached with a reflector 403 having a high reflectance, for example, a thin silver film.
are arranged in random numbers. The configuration of the binary code element array 501 of the second encoder plate 5 is the same as that of the embodiment shown in FIG. In addition, the first encoder plate 4
The binary code of the second encoder plate 5 and the binary code of the second encoder plate 5 have an opposite relationship to each other. That is, for example, the second
The encoder plate 5 indicates "1" for holes and "0" for non-holes.
When defined as, in the first encoder plate 4, "valid" is "0" and "no hole" is "1". In the embodiment shown in FIG. 4, it goes without saying that the present invention can be practiced even if the code reading means 7 is of the sonic type shown in FIG. Further, in the configuration of the wind direction and speed meter described above, the wind direction vane 3 and the two wind cups 1 and 2 are arranged so that the former is sandwiched between the latter, but this arrangement may be changed as appropriate. However, two encoder plates 4 and 5
and gear 6, two wind cups 1 and 2, and wind direction vane 3
The connection relationship between is the same as above. Furthermore, if the weight load of the wind cups 1 or 2 (encoder plates 4, 5, etc.) is small, one of the wind cups, for example, the second encoder plate 5, may be omitted and the second encoder plate 5 may be installed. The present invention can also be practiced even if the rotation is made only by the gear 6 without being restricted by the respective rotating shafts 101 and 301. Next, the configuration of the arithmetic device will be explained with reference to FIG.
Note that this arithmetic device is provided in the measuring instrument 8. Reference numeral 11 denotes a reception time integration section which integrates the pulse width (duration time of each pulse signal) of one code of the reception signal (binary code) sent from the code reading means 7 in the form of a pulse signal. Reference numeral 12 denotes a reception number counting section, and a reception time accumulation section 11
Count the number of times the code is received. The count value of the reception frequency counting section 12 is cleared when wind direction data is output from a wind direction calculation section 20, which will be described later. Further, the reception number counting section 12 can be replaced with a timer that outputs a timed signal that continues for a certain period of time with the first code of the received signal. Reference numeral 13 denotes a wind speed calculating section, which calculates wind speed from the time integrated value of the received signal in the receiving time integrating section 11 until the count value in the reception number counting section 12 reaches a certain value, and outputs wind speed data. Reference numeral 14 denotes a received code storage unit, which is, for example, an N-bit shift register, and stores N bits of the binary code string of the received signal. 15 is a shift clock generation section, and wind speed calculation section 1
From the wind speed data from 3, a clock pulse is generated that is synchronized with the input speed of the received signal, that is, has the same period as the input code string. This clock pulse becomes a shift clock pulse when the received code storage section 14 (shift register) operates to store the received code. Reference numeral 16 denotes a shift clock counter, which counts N shift clock pulses sent from the shift clock generator 15 (same number as the number of bits stored in the received code storage 14), that is, when the count value is from 1 to N. during which an output signal is generated. The count value of the shift clock counter 16 is cleared when wind direction data is output from a wind direction calculation section 20, which will be described later. Reference numeral 17 denotes a wind direction code storage section, which stores a binary code element array 40 formed on the two encoder plates 4 and 5.
Wind direction code data determined by an array of 1,501 code elements is stored in advance,
It is mainly composed of ROM (read-only memory). As shown in FIG. 6, the above ROM represents the array position of the code elements in the binary code element arrays 401, 501 as a phase, n phases, and for convenience, the number of azimuths to be measured for the wind direction is n, which is the same number as the above phase number. Then, it has a capacity of n ² bits. Further, the code string configuration of the wind direction code data stored in the ROM is the same as the code string arrangement shown in the table in the "Operations of the Embodiments" section below. However, in FIG. 6, capital letters are used for each symbol in order to distinguish it from the code string of the input signal. Reference numeral 18 denotes a read clock generating section which generates a clock pulse for reading out the wind direction code stored in the wind direction code storage section 17. The period of this read clock pulse is constant. Reference numeral 19 denotes a collation unit that collates the N-bit code string stored in the received code storage unit 14 with the wind direction code read out from the wind direction code storage unit 17 (sequentially read out N bits at a time while shifting one bit at a time). Reference numeral 20 denotes a wind direction calculation section, which detects a wind direction code that matches the code string stored in the received code storage section 14 through a matching operation in the matching section 19, and generates wind direction data. 21 is an inverter, shift clock counting section 1
The polarity of the output signal of No. 6 is inverted. Reference numeral 22 denotes a gate, which is opened by the output signal from the shift clock counter 16 and outputs the shift clock generator 15.
A shift clock pulse outputted from the input code storage section 14 is supplied to the reception code storage section 14. Reference numeral 23 denotes a gate which is closed while the output signal from the shift clock counter 16 is present by the action of the inverter 21, and prohibits input of the read clock pulse outputted from the read clock generator 18 to the wind direction code storage section 17. . Each of the parts described above does not necessarily exist individually as hardware, and the functions of many parts can be processed by software using the CPU. (Function of the Embodiment) In the following description of the function, it is assumed that the anemometer has an optical light transmission type code reading system, that is, the embodiment shown in FIGS. 1 and 2. First, the code generation function in the anemometer will be explained. When exposed to wind, the first wind cup 1 and the second wind cup 2 rotate in opposite directions because the directions of the respective cups 102, 202 are opposite to each other. The rotation of the first wind cup 1 and the second wind cup 2 is transmitted to the first encoder plate 4 and the second encoder plate 5 by the respective rotation shafts 101 and 201, and these rotate. , due to the existence of the gear 6 (due to the rotation of the gear 6 in the so-called autorotation direction) 2
The encoder plates 4 and 5 rotate in opposite directions and at the same rotational speed (naturally, the rotational speeds of the two wind cups 1 and 2 are also the same). Further, the rotational speed of the encoder plates 4 and 5 is proportional to the wind speed. On the other hand, when the wind direction changes, the wind direction vane 3 rotates to point in the wind direction. This rotation of the wind direction vane 3 is transmitted to the rotation shaft 601 of the gear 6 via its rotation shaft 301, and the rotation shaft 601 moves in a fan pattern around the rotation shaft 301 of the wind direction vane 3. This rotation shaft 601 is moved via the gear 6 (by the rotation of the gear 6 in the so-called revolution direction).
The information is transmitted to the two encoder plates 4 and 5, and both of the encoder plates 4 and 5 rotate from the same direction in the orientation direction of the wind direction vane 3. A binary code element array 401 arranged around the periphery of the two encoder plates 4 and 5 rotating as described above,
The code generated by 501 is read by code reading means 7. That is, the light emitting element 7
05 is excited by the measuring device 8 and constantly emits light. This light is guided to the light transmitting surface 701 by the light guide 703 and is projected from the light transmitting surface 701. When the binary code element arrays 401, 501 of both the encoder plates 4, 5 face the light transmitting surface 701 at the perforated parts 401a, 501a, the projected light passes through the perforated parts 501a, 401a. The light enters the light-receiving surface 702 , is guided by the light guide 704 , is sensed by the light-receiving element 706 , and is input into the measuring instrument 8 as a light-receiving signal. On the other hand, 2 of encoder plates 4 and 5
When either one or both of the value code element sequences 401 and 501 are non-porous portions 401b or 501b facing the light-receiving surface 701, the non-porous portion 501
b or 401b, the projected light cannot reach the light-receiving surface 702, and no light-receiving signal is input to the measuring instrument 8 during this time. As long as the wind cups 1, 2 and/or the wind direction vane 3 are rotated by the above action, a code string depending on the presence or absence of optical pulses is generated by the cooperation of the encoder plates 4, 5 and the code reading means 7, and the measuring device 8 is entered,
Moreover, since the arrangement of the perforated and non-perforated code elements of the binary code element sequences 401 and 501 is a random number arrangement, the code string input to the measuring device 8 also becomes a random number arrangement. Now, at a certain time, when the wind direction is in a certain direction (this wind direction is assumed to be 1), the light transmitting surface 701 for each of the code elements of the first encoder plate 4 is
Symbols a ₁ , a ₂ , ... a _o are sequentially attached to the right from the one facing the light-receiving surface 702, and each of the code elements of the second encoder plate 5 at the same time is as follows:
Similarly, the following actions will be explained by sequentially adding symbols b ₁ , b ₂ , . . . b _o . When the wind direction does not change as the wind direction 1, the code string generated by the rotation of the encoder plates 1 and 2 as the wind cups 1 and 2 catch the wind is generated when the two encoder plates 1 and 2 are rotated. Since it rotates in the opposite direction, a ₁ ×b ₁ , a ₂ ×b _o , a ₃ ×b _o-1 , ...a _o-1 ×b ₃ , a _o ×
b ₂ , and as long as the wind direction is wind direction 1 (that is, unless the wind direction vane 3 rotates from the position of wind direction 1), the code string repeats the above arrangement. Specifically, for example, the binary code element string 401, 5
The perforated portions 401a and 501a of 01 are set to logic “1”.
, the non-porous portions 401b and 501b are defined as logic "0", respectively, and the above a ₁ , a ₃ , a _o , b ₃ , b ₁ , b _o-1
If we assume that a ₂ , a _o-1 , b _o , and b ₂ are perforated code elements and non-perforated code elements, then the above code string arrangement is “1×1, 0×0, 1×1,…, 0×1,
1×0”, that is, “101…00”. Here, the wind direction is 360/to the left from the direction of wind direction 1.
Assuming that the wind direction has changed by n degrees (the wind direction at this time is wind direction 2), the two encoder plates 4 and 5 will be rotated by the rotation of the wind cups 1 and 2, and both will move 360/n to the right. Rotate. This state is hypothetically 2
Considering that the two encoder plates 4 and 5 are stationary, the light transmitting surface 701 and the light receiving surface 702 of the code reading means 7 have moved to the code element adjacent to the code element in the wind direction 1. If we consider the same way as in the case of wind direction 1, the array of code strings generated in wind direction 2 is a ₂ ×b ₂ , a ₃ ×b ₁ , a ₄ ×b _o , ...a _o × b ₄ , a ₁ ×b ₃
becomes. Similarly, if we consider the case where the wind direction sequentially changes to the left by 360/n degrees (wind direction 3, wind direction 4, ...wind direction n), the arrangement of each code string is the following code string. It will be as shown in the layout table.

[Table] As is clear from the above code array table, regarding the binary code element string 401 of the first encoder plate 4 and the binary code element string 402 of the second encoder plate 5,
When multiplying individual code elements, the same code element is never multiplied more than once (for example, a ₁ ×b ₁ does not appear in any other code than the first in wind direction 1). ). Moreover, the binary code element string 40 of the first encoder plate 4
Binary code element array 50 of the first and second encoder plates 5
Since all of the code element arrays of 1 are random numbers arranged, the code string arrangements of wind direction 1 to wind direction n are all random numbers arranged, and they are never the same random number arrangement. Also, a considerable number of N bits in the arrangement of n bits
Even if only bits (N<n) are taken, the same arrangement as a certain arrangement of the N bits will not be arranged elsewhere. The 2 output from the anemometer as described above
The value code string is input to the arithmetic unit of the measuring instrument 8. Next, the operation of processing wind speed data and wind direction data in the arithmetic unit will be explained. A signal having the code structure shown in the code string arrangement table is input from the anemometer to the control device as a received signal. The received signal is input to a reception time integration section 11, where the duration of each pulse width of the received light pulse signal corresponding to one sign of the received signal, for example, logic "1" is sequentially integrated. On the other hand, the received signal is also input to the reception number counting section 12, where the number of receptions of the above-mentioned light reception pulse signal (the signal corresponding to the code integrated by the reception signal integration section 11) is counted. The reception time accumulating section 11 and the reception number counting section 1
The pulse width integrated value data and reception number data of the received light pulse signals outputted from 2 are input to the wind speed calculation section 13, and the pulse width integrated value data is inputted into the wind speed calculation section 13 when the reception number data reaches a certain value. Calculate the wind speed from The reason why the wind speed can be calculated based on the pulse width integrated value data and the reception frequency data is as follows. Binary code element sequence 4 of the encoder plate 4 (5)
Since 01 (501) is randomly arranged, if the number of code elements is considerably large, the perforated part 401a (501)
01a) and non-porous portion 401b (501b)
The number of is almost the same. Therefore, for example, the optical pulse signal generated by the perforated portion 401a (501a) is an RZ signal with a duty of 50% (as shown in FIG. 7, the optical pulse signal generated by the perforated portion 401a (501a)
This can be obtained by setting the circumferential length l ₂ of the hole in a) to 1/2 of the circumferential length l ₁ of the one-code placement area. ), the time integrated value of the pulse width of the optical pulse signal sent during one cycle of the rotation of the encoder plate 4 (5) is 1/ of the rotation of the encoder plate 4 (5). It corresponds to the time of 4 cycles. The code string generation operations rotate in opposite directions2.
Since this is performed using the two encoder plates 4 and 5, the time integrated value of the pulse width of the optical pulse signal becomes a time corresponding to 1/8 cycle of the rotation of the encoder plate 4 (5). Therefore, for example, the number of receptions counting section 1
The count value of 2 is 1/2n (n is the number of code elements, so
When the relevant count value is 1/2n, encoder plate 4,
5 rotates once. ), if the time integrated value of the pulse width of the optical pulse signal is "T", the rotation period of the encoder plates 4 and 5 is "8T".
Since the wind speed and the rotation period of the encoder plates 4 and 5, that is, the wind cups 1 and 2, are inversely proportional, the wind speed can be calculated from the pulse width integrated value data and the number of reception data. .
Furthermore, the binary code element sequence 40 of the encoder plates 4 and 5
Since the 1,501 code element arrays are arranged in random numbers, the cumulative reception time and the counting of the number of receptions may be started at any point in time as long as they are started at the same time. Furthermore, because the code element arrays in the binary code element arrays 401 and 501 are arranged in random numbers, the number of optical pulse signals received within a fairly long fixed period of time is approximately constant. Therefore, it is also possible to replace the reception number counting section 12 with a timer and calculate the wind speed from the pulse width integrated value of the optical pulse signals received during a certain period of time after the first optical pulse signal of the received signal is input. . The result calculated by the wind speed calculation unit 13 as described above is output as wind speed data, and is also input to the shift clock generation unit 15.
The shift clock generating section 15 generates a shift clock pulse having the same period as the code string period of the received signal from this wind speed data and outputs it. The shift clock counter 16 counts the number of shift clock pulses, and the count value ranges from 1 to N.
In the meantime, an output signal is generated, and this output signal opens the gate 22, and the shift clock pulse is inputted to the received code storage section 14, so that the bit shift operation of the received code storage section 14 is performed. On the other hand, the received signal is input to the received code storage unit 14, and the received code storage unit 14 is synchronized with the code string input cycle of the received signal by the above control.
Since the bit shift operation is performed, even if the wind speed changes, the code string of the received signal remains unchanged in the received code storage section 14.
is stored correctly. During this period, the output signal of the shift clock counter 16 is supplied to the gate 23 via the inverter 21, so that the gate 23 is closed and the read clock generator 18 is closed.
The read clock pulse output from the wind direction code storage unit 1 is not supplied to the wind direction code storage unit 17.
The wind direction code reading operation from 7 has stopped. When the count value in the shift clock counter 16 reaches N, the shift clock pulse counter 16 eliminates the output signal, so the gate 22 closes and the shift clock pulse from the shift clock generator 15 is transferred to the reception code storage section 14. input is stopped.
By this time, N bits of the code string of the received signal have been input to the received code storage section 14 and are stored therein. On the other hand, when the shift clock counter 16 eliminates the output signal, the gate 23 opens and the read clock pulse from the read clock generator 18 is supplied to the wind direction code storage section 17 to start reading out the wind direction code. The wind direction code is read out from the wind direction code storage section 17 by sequentially reading N bits at a time while shifting each bit by 1 bit. That is, in FIG. 6, for example, first, for wind direction 1, the code strings from phase 1 to phase N are A ₁ ×B ₁ , A ₂ ×B _o , ... A _N ×B _{o-(N-2 )} is read out, then the code strings A ₂ ×B _o , A ₃ ×B _o-1 , ... A _N+1 ×B _o-(N-1) are read out for wind direction 1, and so on. Sequentially phase n for wind direction 1
(until the first bit becomes a code corresponding to phase n), then the code string for wind direction 2 is read out in the same way, and this operation is performed for all wind directions 1 to n. . The wind direction code read out from the wind direction code storage section 17 in the manner described above is compared with the code string of the received signal stored in the reception code storage section 14 in the collation section 19, and when both match, the wind direction code is determined from the wind direction code. The calculation unit 20 detects the wind direction and calculates wind direction data. For example, if the code string stored in the received code storage unit 14 is a ₇ ×b ₁ , a ₈ ×b _o , ... a _N+3 ×b _o-(N-8) , the wind direction code code string A ₇ When ×B ₁ , A ₈ ×B _o , . . . A _N+3 ×B _o-(N-8) are read, both match. This wind direction code code string is found in the wind direction code corresponding to wind direction 4 in the ROM stored data of the wind direction code storage section 17, so the wind direction calculation section 20 judges this and indicates that the wind direction is the direction of wind direction 4. Output wind direction data. Since the code string of the wind direction code is made by randomly arranging binary codes as described above, even if the number of bits to be compared in the matching section 19 is N smaller than the total number of arrays n, N is a considerable number. If a large number is set, the code string of the same arrangement will not appear in more than one place, so the wind direction can be uniquely determined by the above matching operation. Furthermore, in the above matching operation, even if there are several bits out of N bits that do not match, it is assumed that they match, thereby preventing missing measurement data due to errors in reading the code string. In this way, even if the matching operation has a certain width, erroneous detection of the wind direction will not occur due to the nature of the binary code element sequence in which the random numbers are arranged. When the wind direction data is output as above,
Reception count counter 12 and shift clock counter 1
The count value of 6 is cleared. Since the received signal is always inputted from the wind direction and speed meter, as soon as the reception frequency counting section 12 and shift clock counting section 16 are cleared, the next wind direction and wind speed calculation control is started, and this process is repeated. Since a large number of the above wind direction data and wind speed data are output in a short period of time, when using the above wind speed data and wind direction data as actual measurement data, correlate these data during the set period,
Data with the highest correlation rate is used as measurement data. An example of the wind direction data is as shown in FIG. 8, and it is determined from this wind direction data that the wind direction is 10. In the above embodiments, the binary code element sequence is arranged in a random number array, but it is not necessarily necessary to use a random number array. However, if a random number array is not used, a synchronization means is required to ensure that the code reading start points of the encoder plates 4 and 5 are always at the same point, and this synchronization means also requires
Since the encoder plates 4 and 5 rotate in opposite directions, it becomes extremely complicated and signal processing becomes difficult, so it is more advantageous to use a random number array. (Effects of the Invention) As described above in detail, according to the present invention, wind speed and wind direction can be measured through simultaneous processing, and data detection and transmission can be performed using a pair of code reading means. This greatly simplifies the hardware for reading the code. In addition, the present invention has extremely remarkable effects, such as by making the code arrangement a random number arrangement, so that measurement data can be obtained from any code arrangement.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are a perspective view and a sectional view showing the structure of a wind direction and speed meter according to an embodiment of the present invention, respectively;
3 and 4 are perspective views of main parts showing other embodiments of the wind direction and speed meter, FIG. 5 is a block diagram of a wind direction and wind speed calculating device according to an embodiment of the present invention, and FIG. 6 is a wind direction code storage. Figure 7 is a diagram explaining the code elements of the encoder board, Figure 8 is a graph showing the correlation of wind direction data, and Figures 9 and 10 are graphs showing conventional wind speed data. It is a perspective view showing the structure of a meter and a wind vane. Main symbols: 1, 2...wind cup, 3...wind direction vane,
4, 5... Encoder plate, 401, 501... Binary encoded element sequence, 402, 502... Rack, 6... Gear, 7... Code reading means, 11... Reception time integrating section, 12... Reception number counting section, 13... Wind speed calculation section,
14... Reception code storage section, 15... Shift clock generation section, 17... Wind direction code storage section, 19... Verification section,
20...Wind direction calculation section.

Claims (1)

[Scope of Claims] 1. A wind cup and a wind direction vane that rotate around the same axis and can rotate independently of each other, and binary code elements are arranged around the periphery, and the above-mentioned two disks connected to the rotating shafts of the wind cup and the wind direction vane so that they rotate in opposite directions when the wind cup rotates and in the same direction when the wind direction vane rotates; A signal sending surface and a signal receiving surface are made to face the binary code element array part of the disk,
A code reading means configured to read a code string generated by the rotation of the two disks, and a wind direction from the arrangement of codes read by the code reading means, and a wind speed from the speed of change of the codes. An anemometer consisting of a calculation device that performs calculations. 2. The anemometer according to claim 1, wherein the binary code elements of two discs are arranged with and without holes. 3. The wind speed and direction anemometer according to claim 1, wherein the binary code elements of one disc are arranged with or without a hole, and the binary code elements of the other disc are arranged with or without a reflector. . 4. The anemometer according to any one of claims 1 to 3, wherein the array of binary code elements is a random number array. 5. The anemometer according to claim 1, wherein the code reading means is an optical transmitting and receiving means. 6. The anemometer according to claim 1, wherein the code reading means is a sound wave transmitting/receiving means. 7. Fix one disc to the rotating shaft of each of two pairs of wind cups with cups facing in opposite directions, and
Claim 1 is characterized in that a gear is provided connected between the plates at the peripheral edge of the two discs, and the rotational axis of the gear and the rotational axis of the wind direction vane are coupled in directions orthogonal to each other. Wind anemometer. 8 A time integration unit that integrates the input time of one code of a binary code string whose code arrangement changes depending on the wind direction and whose code input speed changes depending on the wind speed, and defines the integrated operation time of the time integration unit. a wind speed calculation unit that calculates the wind speed based on the integrated value in the time integration unit and a specified time in the calculation unit or timer; and a wind speed calculation unit that calculates the wind speed based on the wind speed value calculated by the wind speed calculation unit. A pulse generation section that generates a pulse train synchronized with the input speed of the value code string, and a reception code storage section that uses the pulse train generated by the pulse generation section as a shift clock pulse and stores a set number of bits of the input binary code string. a wind direction code storage section that stores the wind direction in advance as a binary code string; a collation section that sequentially matches the code string stored in the received code storage section and the code string stored in the wind direction code storage section; A wind direction/wind speed calculation device comprising a wind direction calculation section that calculates a wind direction based on the verification result of the verification section. 9. The wind direction and wind speed calculation device according to claim 8, wherein the array of the binary code string is a random number array. 10. The wind speed and direction calculation device according to claim 8, which determines wind speed and/or wind direction from the correlation of a large number of calculation data.