Wind speed detection device
By using a first transistor and a second transistor for signal amplification in the wind speed detection device, combined with optocouplers and signal amplification circuits, wind speed is measured in sections. PMOS transistors and relays are used to switch the signal path, solving the problem of low accuracy in traditional wind speed measuring instruments and achieving high-precision wind speed detection.
Patent Information
- Application Number
- CN202520722099.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-16
AI Technical Summary
Traditional anemometers have low measurement accuracy and are difficult to accurately measure the randomness and large differences in wind speed.
The signal is amplified twice using a first transistor and a second transistor. Combined with optocouplers and signal amplification circuits, wind speed is measured in sections. PMOS transistors and relays are used to switch the signal path to improve measurement accuracy.
It improves the measurement accuracy of weak wind speeds and the measurement accuracy of high wind speeds, and realizes high-precision wind speed detection.
Smart Images
Figure CN223940960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind speed detection technology, and in particular to a wind speed detection device. Background Technology
[0002] Wind power has become one of the world's mainstream energy sources. Currently, wind power is recognized globally as one of the most commercially viable and competitive renewable energy technologies, boasting advantages such as high industrial maturity, low power generation costs, and positive impacts on the natural and social environment. Wind power requires minimal land use, has a short payback period, generally does not generate significant ecological impacts, and generates little controversy, allowing for rapid large-scale development. With the rapid development of wind power, wind speed measurement has become increasingly important. However, wind speed is random and varies considerably, resulting in low accuracy for traditional anemometers. Utility Model Content
[0003] The purpose of this invention is to provide a wind speed detection device that uses a first transistor and a second transistor to amplify the signal twice, thereby improving the measurement accuracy of weak wind speeds.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] One aspect of this utility model provides a wind speed detection device, the detection device comprising: a wind speed sensor for converting wind energy into electrical energy, the wind speed sensor outputting a first power source and a first location to be measured; a first optocoupler and a first capacitor, the light-emitting input terminal of the first optocoupler and one end of the first capacitor being connected to the first power source, and the light-emitting output terminal of the first optocoupler and the other end of the first capacitor being connected to the first location; a processing module and a first signal amplification circuit, the first signal amplification circuit including a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, and a fourth resistor, the light-receiving input terminal of the optocoupler being connected to... The first resistor connects to the second power supply. The light-receiving output terminal of the optocoupler is connected to the base of the first transistor. The collector of the first transistor is connected to the base of the second transistor and one end of the second resistor. The other end of the second resistor is connected to the second power supply. The emitter of the first transistor is connected to a second location. The collector of the second transistor is connected to one end of the third resistor and the processing module. The other end of the third resistor is connected to the second power supply. The emitter of the second transistor is connected to the second location through the fourth resistor. A display module is connected to the processing module, and the processing module displays the wind speed value through the display module.
[0006] In some embodiments, the first signal amplification circuit further includes a first operational amplifier, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor. The non-inverting input terminal of the first operational amplifier is connected to one end of the fifth resistor and one end of the sixth resistor. The other end of the fifth resistor is connected to the collector of the second transistor and one end of the third resistor. The other end of the sixth resistor is connected to the output terminal of the first operational amplifier and one end of the eighth resistor. The inverting input terminal of the first operational amplifier is connected to a first ground point through the seventh resistor. The other end of the eighth resistor is connected to the processing module.
[0007] In some embodiments, the first signal amplification circuit further includes a ninth resistor and a second capacitor, one end of the ninth resistor is connected to one end of the second capacitor and the other end of the eighth resistor, the other end of the second capacitor is connected to a first location, and the other end of the ninth resistor is connected to the processing module.
[0008] In some embodiments, the detection device further includes a second optocoupler, a tenth resistor, an eleventh resistor, a twelfth resistor, and a second signal amplification circuit. One end of the tenth resistor is connected to a first power supply, and the other end of the tenth resistor is connected to one end of the eleventh resistor and one end of the twelfth resistor. The other end of the eleventh resistor is connected to the light-emitting input terminal of the second optocoupler, and the other end of the twelfth resistor and the light-emitting output terminal of the second optocoupler are connected to a first location. The light-receiving side of the second optocoupler is connected to the input terminal of the second signal amplification circuit, and the output terminal of the second signal amplification circuit is connected to the processing module.
[0009] In some embodiments, the circuit structure of the second signal amplification circuit is the same as that of the first signal amplification circuit.
[0010] In some embodiments, the detection device further includes a PMOS transistor, a relay, a thirteenth resistor, and a fourteenth resistor. The gate of the PMOS transistor is connected to the other end of the tenth resistor, one end of the eleventh resistor, and one end of the twelfth resistor through the thirteenth resistor. The source of the PMOS transistor is connected to a first power supply through the fourteenth resistor. The drain of the PMOS transistor is connected to one end of the coil terminal of the relay. The other end of the coil terminal of the relay is connected to a first ground point. One end of the contactor of the relay is connected to the first power supply and one end of the first capacitor. The other end of the contactor of the relay is connected to the light-emitting input terminal of the first optocoupler. The relay is normally closed.
[0011] In some embodiments, the detection device further includes a diode, the positive terminal of which is connected to a first location, and the negative terminal of which is connected to one end of the coil terminal of the relay.
[0012] A wind speed detection device according to an embodiment of the present invention has at least the following beneficial effects: wind speed is measured using a first optocoupler and a first signal amplification circuit at low wind speeds, and a second optocoupler and a second signal amplification circuit at high wind speeds, thus measuring wind speed in intervals and improving measurement accuracy. Furthermore, a PMOS transistor and a relay are also provided; when measuring wind speed using the second optocoupler and the second signal amplification circuit, the relay can be used to shut off the measurement of the first optocoupler and the first signal amplification circuit, improving the measurement accuracy of the second optocoupler and the second signal amplification circuit.
[0013] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a circuit diagram of a wind speed detection device according to an embodiment. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.
[0020] The technical solutions of the embodiments of this application are briefly described below:
[0021] According to some embodiments, such as Figure 1 As shown, this application provides a wind speed detection device, the detection device comprising:
[0022] Wind speed sensor, used to convert wind energy into electrical energy, outputs the first power source and the first location to be measured respectively;
[0023] The first optocoupler U1 and the first capacitor C1 are connected to a first power supply, with the light-emitting input terminal of the first optocoupler U1 and one end of the first capacitor C1 connected to a first power supply, and the light-emitting output terminal of the first optocoupler U1 and the other end of the first capacitor C1 connected to a first ground.
[0024] The processing module and the first signal amplification circuit include a first transistor Q1, a second transistor Q2, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The light-receiving input terminal of the first optocoupler U1 is connected to the second power supply through the first resistor R1. The light-receiving output terminal of the first optocoupler U1 is connected to the base of the first transistor Q1. The collector of the first transistor Q1 is connected to the base of the second transistor Q2 and one end of the second resistor R2. The other end of the second resistor R2 is connected to the second power supply. The emitter of the first transistor Q1 is connected to the second ground. The collector of the second transistor Q2 is connected to one end of the third resistor R3 and the processing module. The other end of the third resistor R3 is connected to the second power supply. The emitter of the second transistor Q2 is connected to the second ground through the fourth resistor R4.
[0025] The display module is connected to the processing module, and the processing module displays the wind speed value through the display module.
[0026] The working principle of the above embodiment is as follows: the wind speed sensor converts wind energy into electrical energy; the faster the wind speed, the greater the electrical energy, and the lower the wind speed, the less electrical energy. The first optocoupler U1 transmits the electrical signal converted by the wind speed sensor to the first signal amplification circuit. The first signal amplification circuit amplifies the electrical signal and inputs it to the processing module. The processing module converts the electrical signal into a wind speed value, which is then displayed by the display module. In this application, the first signal amplification circuit uses a first transistor Q1 and a second transistor Q2 to amplify the signal twice, improving the measurement accuracy of weak wind speeds.
[0027] The following is in conjunction with the appendix to this instruction manual. Figure 1 The preferred embodiments of this disclosure will be further described in detail below.
[0028] According to some embodiments, such as Figure 1 As shown, the first signal amplification circuit also includes a first operational amplifier UA1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8, with the specific connection method as follows:
[0029] The non-inverting input of the first operational amplifier UA1 is connected to one end of the fifth resistor R5 and one end of the sixth resistor R6. The other end of the fifth resistor R5 is connected to the collector of the second transistor Q2 and one end of the third resistor R3. The other end of the sixth resistor R6 is connected to the output of the first operational amplifier UA1 and one end of the eighth resistor R8. The inverting input of the first operational amplifier UA1 is connected to the first ground point through the seventh resistor R7. The other end of the eighth resistor R8 is connected to the processing module.
[0030] The first signal amplification circuit amplifies the signal twice through the first transistor Q1 and the second transistor Q2, and then amplifies it a third time through the first operational amplifier UA1. This amplifies the weak wind speed conversion electrical signal to a level that the processing module can read.
[0031] According to some embodiments, such as Figure 1 As shown, the first signal amplification circuit also includes a ninth resistor R9 and a second capacitor C2. One end of the ninth resistor R9 is connected to one end of the second capacitor C2 and the other end of the eighth resistor R8. The other end of the second capacitor C2 is connected to the first ground point, and the other end of the ninth resistor R9 is connected to the processing module.
[0032] Among them, the ninth resistor R9 and the second capacitor C2 play the role of RC filtering.
[0033] According to some embodiments, such as Figure 1As shown, the detection device also includes a second optocoupler U2, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, and a second signal amplification circuit, the specific connection method of which is as follows.
[0034] One end of the tenth resistor R10 is connected to the first power supply. The other end of the tenth resistor R10 is connected to one end of the eleventh resistor R11 and one end of the twelfth resistor R12. The other end of the eleventh resistor R11 is connected to the light-emitting input terminal of the second optocoupler U2. The other end of the twelfth resistor R12 and the light-emitting output terminal of the second optocoupler U2 are connected to the first ground point. The light-receiving side of the second optocoupler U2 is connected to the input terminal of the second signal amplification circuit. The output terminal of the second signal amplification circuit is connected to the processing module.
[0035] This application uses a first optocoupler U1 and a first signal amplifier circuit to measure wind speed at low wind speeds, and a second optocoupler U2 and a second signal amplifier circuit to measure wind speed at high wind speeds, thus measuring wind speed in intervals and improving the accuracy of wind speed measurement.
[0036] According to some embodiments, such as Figure 1 As shown, the circuit structure of the second signal amplifier circuit is the same as that of the first signal amplifier circuit.
[0037] According to some embodiments, such as Figure 1 As shown, the detection device also includes a PMOS transistor Q3, a relay K1, a thirteenth resistor R13, and a fourteenth resistor R14. The gate of the PMOS transistor Q3 is connected to the other end of the tenth resistor R10, one end of the eleventh resistor R11, and one end of the twelfth resistor R12 through the thirteenth resistor R13. The source of the PMOS transistor Q3 is connected to the first power supply through the fourteenth resistor R14. The drain of the PMOS transistor Q3 is connected to one end of the coil of the relay K1. The other end of the coil of the relay K1 is connected to the first ground point. One end of the contactor of the relay K1 is connected to the first power supply and one end of the first capacitor C1. The other end of the contactor of the relay K1 is connected to the light-emitting input terminal of the first optocoupler U1. The contactor of the relay K1 is normally closed.
[0038] The working principle of the above embodiment is as follows: when the wind speed is low, the second optocoupler U2 is not turned on, and the first optocoupler U1 is turned on to measure the wind speed; when the wind speed is high, the second optocoupler U2 is turned on to start measuring the wind speed, the PMOS transistor Q3 is turned on, the coil terminal of the relay K1 is energized, the contactor of the relay K1 is opened from the normally closed state, and the first optocoupler U1 is turned off.
[0039] When measuring wind speed using the second optocoupler U2 and the second signal amplifier circuit, this application can use relay K1 to shut off the measurement of the first optocoupler U1 and the first signal amplifier circuit, thereby improving the measurement accuracy of the second optocoupler U2 and the second signal amplifier circuit.
[0040] According to some embodiments, such as Figure 1 As shown, the detection device also includes a diode D, with the positive terminal of the diode D connected to the first ground point and the negative terminal of the diode D connected to one end of the coil terminal of the relay K1.
[0041] Diode D is used to provide a freewheeling circuit for the coil of relay K1 when PMOS transistor Q3 is turned off, thereby improving the service life of relay K1.
[0042] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0043] Although this disclosure has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Because this disclosure can be embodied in many forms without departing from the spirit or substance of this application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A wind speed detection device, characterized in that, The detection device includes: A wind speed sensor, which is used to convert wind energy into electrical energy, and outputs the first power source and the first location to be measured respectively; A first optocoupler and a first capacitor, wherein the light-emitting input terminal of the first optocoupler and one end of the first capacitor are connected to a first power supply, and the light-emitting output terminal of the first optocoupler and the other end of the first capacitor are connected to a first ground point; The processing module and the first signal amplification circuit include a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, and a fourth resistor. The light-receiving input terminal of the optocoupler is connected to a second power supply through the first resistor. The light-receiving output terminal of the optocoupler is connected to the base of the first transistor. The collector of the first transistor is connected to the base of the second transistor and one end of the second resistor. The other end of the second resistor is connected to the second power supply. The emitter of the first transistor is connected to a second ground. The collector of the second transistor is connected to one end of the third resistor and the processing module. The other end of the third resistor is connected to the second power supply. The emitter of the second transistor is connected to the second ground through the fourth resistor. The display module is connected to the processing module, and the processing module displays the wind speed value through the display module.
2. The detection device according to claim 1, characterized in that, The first signal amplification circuit further includes a first operational amplifier, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor. The non-inverting input terminal of the first operational amplifier is connected to one end of the fifth resistor and one end of the sixth resistor. The other end of the fifth resistor is connected to the collector of the second transistor and one end of the third resistor. The other end of the sixth resistor is connected to the output terminal of the first operational amplifier and one end of the eighth resistor. The inverting input terminal of the first operational amplifier is connected to a first ground point through the seventh resistor. The other end of the eighth resistor is connected to the processing module.
3. The detection device according to claim 2, characterized in that, The first signal amplification circuit further includes a ninth resistor and a second capacitor. One end of the ninth resistor is connected to one end of the second capacitor and the other end of the eighth resistor. The other end of the second capacitor is connected to a first ground point, and the other end of the ninth resistor is connected to the processing module.
4. The detection device according to claim 1, characterized in that, The detection device further includes a second optocoupler, a tenth resistor, an eleventh resistor, a twelfth resistor, and a second signal amplification circuit. One end of the tenth resistor is connected to a first power supply, and the other end of the tenth resistor is connected to one end of the eleventh resistor and one end of the twelfth resistor. The other end of the eleventh resistor is connected to the light-emitting input terminal of the second optocoupler. The other end of the twelfth resistor and the light-emitting output terminal of the second optocoupler are connected to a first location. The light-receiving side of the second optocoupler is connected to the input terminal of the second signal amplification circuit, and the output terminal of the second signal amplification circuit is connected to the processing module.
5. The detection device according to claim 4, characterized in that, The circuit structure of the second signal amplification circuit is the same as that of the first signal amplification circuit.
6. The detection device according to claim 4, characterized in that, The detection device further includes a PMOS transistor, a relay, a thirteenth resistor, and a fourteenth resistor. The gate of the PMOS transistor is connected to the other end of the tenth resistor, one end of the eleventh resistor, and one end of the twelfth resistor through the thirteenth resistor. The source of the PMOS transistor is connected to a first power supply through the fourteenth resistor. The drain of the PMOS transistor is connected to one end of the coil of the relay. The other end of the coil of the relay is connected to a first ground point. One end of the contactor of the relay is connected to the first power supply and one end of the first capacitor. The other end of the contactor of the relay is connected to the light-emitting input terminal of the first optocoupler. The relay is normally closed.
7. The detection device according to claim 6, characterized in that, The detection device also includes a diode, the positive terminal of which is connected to a first location, and the negative terminal of which is connected to one end of the coil of the relay.