TW200426372A - Design 2D wind flow sensor with electronic field - Google Patents

Abstract

This pattern is an innovate instrument for measuring 2D little weaker wind. The principle of the 2D little weaker wind measurement is based on creating a negative high voltage about -4KV in between four charged electrodes. When little weaker wind passes through the electric field, it will be shift and bias to some electrodes caused by the difference of electricity field. The circuit use SMD in order to reduce the size of the instrument for easy carrying. The experimental results shown that the instrument can measure little weaker wind to 0.1m/sec. The instrument is high effective, sensitive, precision and tiny, portable. The instrument can be used for sensing little air leaking. The respective fields such as air flight, energy industries, hospital separate room, and nuclear reaction laboratory, tunnel mining etc.

Description

200426372 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to-the size and direction of the wind and the wind volume _ scale structure, especially a Gu M system that can be measured by two-dimensional electricity Architecture. [Previous technology] With the advancement of industry in modern times, indoor wind speed measurement equipment has also emerged at the historic moment. In recent years, a fixed electric field parallel plate measurement has been used. It is mainly used when a high-slit body is input between fixed plates. Wind speed is removed from the silk. 1, = Because it is a -transformation, when measuring speed, you need to know the direction of the wind. Therefore, it is inconvenient to measure the wind speed, and for the small amount of wind speed and dense measurement that must be measured, it is generally achieved. For precision, take the vane anemometer as an example, because it can only measure the wind that can't move the blades ==, so it can't measure the wind speed. If the hotline day and month are used to measure the wind speed in the early direction, it is too small. The wind can not achieve the effect of cooling. [Summary of the Invention] The main purpose of square λ22 is to provide a kind of wind speed that can be measured through a two-dimensional electric field and its system architecture. In order to achieve the aforementioned purpose, the present invention provides a two-dimensional electric field A small amount of breeze in its direction _ Tongyuanhua 'forms a charged ion cloud, and in the absence of wind, the charge of the two ends is equal' When the wind blows in, the four sensing ends are 4 ' Into the voltage value, and then calculated by the subtractor, and finally the value of ==! Is displayed as the x and γ axis coordinates _ 'From the distribution of the figure, the system of determining the direction of the wind direction is only a partial reduction of the present invention. In order to enable «inspectors and practitioners' to understand the technical means of the present invention more clearly, and to make explanations based on the illustrations and illustrations, the following description is only for the purpose of explaining the present invention. Any modification or change should be included in the present invention. [Embodiment] 200426372 Please refer to the first picture to-«The road generates a square wave, the # can be seen from the block diagram generated by the Shangli, from the vibration dust, and then by Beili Current circuit to output E to Sheng 'through the piezoelectric transformer The rise of the ink device is due to the negative seam side, which directs the gas to a negative high voltage. However, in the block diagram of the receiving end, the output is calculated by the domain method Qi_ ^. The electric transformer amplifies the attenuation in a specific way to make it easier to observe. Circuit, adjusted Γίlarge. Money generation technology «Single seam formation voltage divider voltage for supply; ^ constant to determine the desired frequency, resistance d and f" / 2 secret) C1 4 is twice the time constant, when ㈣_, the output frequency is f high voltage Generate the circuit diagram, the role of the drive circuit is to increase the output of power to achieve the optimal value 'and increase the input to the piezo transformer. The boost circuit is a piezoelectric transformer ^ = ^ produces a high voltage output The voltage doubling rectifier circuit can double the voltage and become a DC negative high. In the power-off of the receiving end, the resistance of the buffer is to make the sensed current become a voltage value. The buffer, also known as the voltage follower, can increase the output current. The voltage gain is i. It has high input impedance and low output impedance. It is an electrical switch—an ideal buffer or isolation element. A subtractor = named voltage difference amplifier is used to sense the potential difference between the two input terminals. If R3 = R4 = R5 = R6, the V ”inverting amplifier can provide a large voltage gain, and its voltage gain is Av = —R8 / R7, which makes the signal easier to observe. The voltage A can be calculated from Equation 4.1. The output value is the same as B. The calculation method ^ ^ this.

FL R0 (ν ^ ν2) ^ (ν ^ ν)

The filter circuit of this system is composed of a high-pass filter and a low-pass filter. The high-pass filter filters high-frequency signals generated by the piezoelectric transformer, and the low-pass filter filters out external interference. … Generally Nantong filter, wave filter and low pass filter structure are composed of one oop, two resistors and two capacitors. Among them, opamp is used as a voltage follower to provide wide unit gain, and 200426372 A positive feedback at frequencies above dc is provided by C to obtain complex poles without the use of an inductive high-pass filter. The transfer function is a " corpse + 1 4.2 R'RAC2 can be written as a standard XMP (S) s2 + Ξ ^ + ωΊ: (4. 3)

Q where ω 0 suppresses AC2 (4. 4)

Q lRx Cx + C2 (4.5) The transfer function of the low-pass filter is LP (s)

RAC A 1 (4 brother Ra RACf. Can be written as standard

OK al corpse s2 + sq + 0): 4. 7 7 __1200426372 where

Q

C2 R3 + R (4. 9) Flat === The skin is in ㈣ ~, the size of the device is 丝 Keep a large bandwidth without peak response. There are two sets of circuits and filter circuits, and the receiving end of the preferred embodiment of the present invention is perpendicular to the circuit board, and M 1 Al 'another-the set of receiving ends are Bi, ~ Bi, the two sets of boards = 3 , By the time of A. . ^. . The other is in the circuit to know the direction of the wind and the magnitude of the wind speed. And the size value can be obtained. [Schematic description] The first diagram is a block diagram of the high voltage generating circuit of the present invention. The second figure is a high voltage generating circuit diagram of the present invention. The second figure is a block diagram of a receiving end circuit of the present invention. The fourth figure is a filter circuit diagram of the present invention. The fifth diagram is a two-dimensional sensing structure diagram of the present invention. The sixth diagram is a schematic structural diagram of the present invention. The seventh diagram is a system block diagram of the present invention. [Illustration of drawing number] (Illustration of drawing number of this creation) 0PAMP operational amplifier VDD DC voltage VCK square wave voltage V. Output voltage Q BJT transistor E capacitor voltage U operational amplifier Ag input signal terminal 200426372 A〇 output signal terminal T piezoelectric transformer D rectifier diode R resistor C capacitor Ai receiving terminal Ai receiving terminal Bi receiving terminal—Bi receiving terminal Η South pressure input point

Claims (1)

200426372 Patent application scope:-^ Wind sensor, mainly including-oscillation circuit,-drive circuit, including a buffer cry circuit: and at least two sets of receiving circuit, the receiving circuit is the main M, ~ Ai ,,, is, ~ subtractor, -amplifier, and -filter circuit, where the -group receiving end is Ai, -Ai, Bi, i, _βί, the two sets of receiving ends are perpendicular to a circuit board, and the test circuit thereof; And the center of the gangster area has a negative Goryokan entry point, which becomes a two-dimensional oscillating circuit that generates pressure and becomes a shape of a lion cloud after hybridization. The circuit is doubled to drive the signal to the boost terminal, and the current passing through the piezoelectric transformer is converted into a voltage value at the buffer terminal. The output is P =, and the electrical amplification formed by the negative high voltage makes Xunje County watch, Headings ▲, and ◊ are generated by subtracting the difference of the difference, and then the signal is converted by the amplifier. The high-pass, high-pass, and high-pass circuits are generated by the high-pass test 1 and the low-pass, and the wave transformer 4 High-frequency signal, low-pass filter is a two-dimensional, as described in the patent application scope of a two-dimensional item Field breeze sensor, in which the voltage doubling rectification can double the voltage and become a high-voltage output with large production costs. 3. For example, the scope of the patent application item 丄 and the instrument, where, outside the circuit board The number of fate = mystery-a two-dimensional electric field breeze senses thrills, cuts, and quasi-fluff to increase the transmission of static electricity. 10