A strain signal acquisition system for offshore wind turbine components

Abstract

This invention provides a strain signal acquisition system for offshore wind turbine components, comprising: one or more strain gauges installed on the tower of an offshore wind turbine for acquiring strain signals corresponding to stress generated in the tower; a signal acquisition device connected to a first terminal via at least six wires, one end of the first terminal connected to the signal acquisition device and the other end connected to the strain gauges; the signal acquisition device receiving and processing the strain signals, and internally comprising: a signal output terminal connected to the first terminal via a first wire and a second wire; a voltage generator connected to the first terminal via a third wire and a fourth wire; and a signal comparator connected to the first terminal via a fifth wire and a sixth wire; wherein the signal comparator adjusts the voltage generated by the voltage generator based on a comparison between the supplied voltage and a preset voltage. This invention can effectively improve the acquisition accuracy of strain signals from offshore wind turbine components.

Description

Technical Field

[0001] This invention relates to the field of signal acquisition and transmission technology, and in particular to a strain signal acquisition system for offshore wind power components. Background Technology

[0002] With technological advancements and cost reductions, offshore wind power is becoming one of the important directions for the development of renewable energy globally.

[0003] Offshore wind power generation equipment is a facility that uses offshore wind energy resources to generate electricity. In the actual marine environment, the load on the upper part of the wind turbine of the power generation equipment is transferred to the tower, and then transferred to the jacket foundation below through the tower. Therefore, the actual load at the connection between the jacket and the tower affects the overall stability of the equipment. Collecting relevant signals of the tower load has important reference value for the optimized design of the power generation equipment, such as collecting the strain signal of the tower.

[0004] However, due to the large size of the tower components, the signal transmission wires are too long, resulting in high resistance in the wires themselves. Furthermore, the wires are easily affected by factors such as temperature changes, which can easily lead to inaccurate and unstable signal acquisition. Summary of the Invention

[0005] In view of the above problems, a strain signal acquisition system for offshore wind turbine components is proposed to overcome or at least partially solve the above problems, comprising:

[0006] A strain signal acquisition system for offshore wind turbine components, applied to offshore wind power generation devices, the strain signal acquisition system for offshore wind turbine components comprising:

[0007] One or more strain gauges 2 are installed on the tower of the offshore wind power generation device to collect strain signals corresponding to the stress generated by the tower.

[0008] A signal acquisition device 6 is connected to a first terminal 4 via at least six wires. One end of the first terminal 4 is connected to the signal acquisition device 6, and the other end is connected to the strain gauge 2. The signal acquisition device 6 is used to receive and process the strain signal. The signal acquisition device 6 internally includes:

[0009] The signal output terminal is connected to the first terminal 4 via a first wire 603 and a second wire 606.

[0010] Voltage generator 702, which is connected to the first terminal 4 via a third wire 601 and a fourth wire 604;

[0011] The signal comparator 703 is connected to the first terminal 4 via a fifth wire 602 and a sixth wire 605. The signal comparator 703 is used to compare the supply voltage of the strain gauge 2 with a preset voltage, and adjust the voltage generated by the voltage generator 702 according to the comparison result of the supply voltage and the preset voltage.

[0012] Optionally, comparing the supply voltage of the strain gauge 2 with a preset voltage and adjusting the voltage generated by the voltage generator 702 according to the comparison result includes:

[0013] If the supply voltage is less than the preset voltage, the voltage generator 702 is adjusted to increase the generated voltage so that the supply voltage is equal to the preset voltage.

[0014] Optionally, the first wire 603 is a positive signal wire, and the second wire 606 is a negative signal wire.

[0015] Optionally, the third wire 601 is a positive excitation voltage wire, and the fourth wire 604 is a negative excitation voltage wire.

[0016] Optionally, the fifth wire 602 is a positive induction lead, and the sixth wire 605 is a negative induction lead.

[0017] Optionally, the first terminal 4 is provided with at least four solder points, the at least four solder points including:

[0018] The first welding point 307 is used to weld the first wire 603;

[0019] The second welding point 305 is used to weld the second wire 606;

[0020] The third welding point 306 is used to weld the fourth wire 604 and the sixth wire 605;

[0021] The fourth welding point 304 is used to weld the third wire 601 and the fifth wire 602.

[0022] Optionally, the signal output terminal is provided with a signal amplifier 700, which is used to amplify the strain signal to obtain the target strain signal.

[0023] Optionally, the signal amplifier 700 is connected to a meter 701, which is used to measure the target strain signal.

[0024] Optionally, when there are multiple strain gauges 2, the multiple strain gauges 2 are arranged symmetrically in two groups in the tower, and the multiple strain gauges 2 constitute a full-bridge circuit.

[0025] Optionally, the strain gauge 2 is connected to the first terminal 4 via a second terminal.

[0026] Optionally, the signal acquisition device (6) is provided with a sampling frequency, and the signal acquisition device (6) receives the strain signal through the sampling frequency.

[0027] Optionally, the meter (701) may include an ammeter or a voltmeter.

[0028] Optionally, the positive excitation voltage conductor is responsible for providing the positive voltage of the power supply, and the negative excitation voltage conductor is responsible for providing the negative voltage of the power supply.

[0029] Optionally, the positive induction lead is used to transmit the positive voltage portion of the power supply voltage signal, and the negative induction lead is used to transmit the negative voltage portion of the power supply voltage signal.

[0030] An offshore wind power generation device, the offshore wind power generation device including the strain signal acquisition system of the offshore wind power components as described above.

[0031] The embodiments of the present invention have the following advantages: The strain signal acquisition system for offshore wind power components provided by the embodiments of the present invention includes: one or more strain gauges, installed on the tower of the offshore wind power generation device, for acquiring strain signals corresponding to the stress generated by the tower; a signal acquisition device, connected to a first terminal through at least six wires, one end of the first terminal being connected to the signal acquisition device and the other end being connected to the strain gauges, the signal acquisition device being used to receive and process the strain signals, and internally configured with: a signal output terminal, connected to the first terminal through a first wire and a second wire; a voltage generator, connected to the first terminal through a third wire and a fourth wire; and a signal comparator, connected to the first terminal through a fifth wire and a sixth wire; wherein, the signal comparator is used to adjust the voltage generated by the voltage generator according to the comparison result between the supply voltage and the preset voltage, and by adjusting the voltage generated by the voltage generator through the signal comparator, the supply voltage of the strain gauge is kept at a normal level, thereby making the strain signal acquired by the strain gauge more stable and more accurate, and reducing the adverse effects of factors such as wire resistance or temperature changes on the accuracy of strain signal acquisition. Attached Figure Description

[0032] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the installation of a strain signal acquisition system for an offshore wind turbine component in the tower, according to an embodiment of the present invention.

[0034] Figure 2 This is a circuit connection diagram of a signal acquisition device and a first terminal provided in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the welding point distribution of a first terminal according to an embodiment of the present invention;

[0036] Figure 4 This is a wiring diagram of a strain gauge connected to a first terminal via a second terminal, according to an embodiment of the present invention. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] With technological advancements and cost reductions, offshore wind power is becoming one of the important directions for the development of renewable energy globally.

[0039] Offshore wind power generation equipment is a facility that uses offshore wind energy resources to generate electricity. In the actual marine environment, the load on the upper part of the wind turbine of the power generation equipment is transferred to the tower, and then transferred to the jacket foundation below through the tower. Therefore, the actual load at the connection between the jacket and the tower affects the overall stability of the equipment. There are six degrees of freedom of load at this location: two horizontal loads perpendicular to each other, one vertical axial force, two horizontal bending moments perpendicular to each other, and one torque. Collecting relevant signals of the tower load has important reference value for the optimized design of the power generation equipment, such as collecting the strain signal of the tower.

[0040] However, due to the large size of the tower components, the signal transmission wires are too long, resulting in high resistance in the wires themselves. Furthermore, the wires are easily affected by factors such as temperature changes, which can easily lead to inaccurate and unstable signal acquisition.

[0041] One embodiment of the present invention provides a strain signal acquisition system for offshore wind power components, applied to offshore wind power generation devices. The strain signal acquisition system for offshore wind power components includes:

[0042] One or more strain gauges 2 are installed on the tower of the offshore wind power generation device to collect strain signals corresponding to the stress generated by the tower.

[0043] A strain gauge is a sensor used to measure the strain of an object. Strain refers to the deformation of an object caused by the action of an external object, usually expressed as a percentage change in length. Strain gauges can collect corresponding strain signals, such as resistance signals and voltage signals, when an object is subjected to stress, so that the magnitude of the strain generated by the object can be reflected by the magnitude of these strain signals.

[0044] In practical implementation, the cross-section of the offshore wind turbine tower can be selected as the measurement section, and strain gauge 2 can be installed according to the torque direction of the tower. As an example, such as... Figure 1 As shown, the cross-section of the tower 1 is a circular structure, and multiple strain gauges 2 can be arranged on both sides of the tower according to the torque direction 3 of the tower and along the measuring section.

[0045] In some embodiments of the present invention, when there are multiple strain gauges 2, the multiple strain gauges 2 are arranged symmetrically in two groups on the tower, and the multiple strain gauges 2 constitute a full-bridge circuit.

[0046] A full-bridge circuit is a circuit consisting of four bridge arms, each of which is composed of a controllable switch and a diode connected in parallel. Every two bridge arms are connected in series, and then the two series-connected bridge arms are connected in parallel. The input terminal is connected to the two ends of the series-connected bridge arms, and the output terminal is the midpoint between the two series-connected bridge arms. The load is connected across the midpoint between the two series-connected bridge arms like a bridge, hence the name full-bridge circuit.

[0047] In specific implementations, such as Figure 1 As shown, the four strain gauges can be divided into two groups of two, symmetrically arranged on both sides of the offshore wind turbine tower. Furthermore, the four strain gauges form a full-bridge circuit, where the resistance of two strain gauges increases under tension, and the resistance of the other two decreases under compression. This arrangement makes the output voltage of the bridge proportional to the change in strain, thereby improving the sensitivity of strain signal acquisition.

[0048] A signal acquisition device 6 is connected to a first terminal 4 via at least six wires. One end of the first terminal 4 is connected to the signal acquisition device 6, and the other end is connected to the strain gauge 2. The signal acquisition device 6 is used to receive and process the strain signal. The signal acquisition device 6 internally includes:

[0049] The signal output terminal is connected to the first terminal 4 via a first wire 603 and a second wire 606.

[0050] Voltage generator 702, which is connected to the first terminal 4 via a third wire 601 and a fourth wire 604;

[0051] The signal comparator 703 is connected to the first terminal 4 via a fifth wire 602 and a sixth wire 605. The signal comparator 703 is used to compare the supply voltage of the strain gauge 2 with a preset voltage, and adjust the voltage generated by the voltage generator 702 according to the comparison result of the supply voltage and the preset voltage.

[0052] In this embodiment, as an example, the signal acquisition device 6 can be installed on the tower as follows: Figure 1 As shown, in Figure 1 In the middle, the signal acquisition device 6 uses six wires ( Figure 1 The six wires numbered 5 in the middle are connected to the first terminal 4, the first terminal 4 is connected to the strain gauge 2, and the wires connecting the first terminal 4 and the strain gauge 2 are in Figure 1 It is not shown in the middle.

[0053] In practical applications, a sampling frequency can be set for the signal acquisition device 6, so that the signal acquisition device 6 can acquire strain signals based on the sampling frequency.

[0054] In this embodiment, the first wire 603 and the second wire 606 are wires used to transmit the strain signal collected by the strain gauge 2. The strain signal is transmitted to the signal acquisition device 6 through the first wire 603 and the second wire 606, and then output through the signal output terminal of the signal acquisition device 6. The third wire 601 and the fourth wire 604 are wires used to supply power to the strain gauge 2 and provide power supply voltage.

[0055] In practical applications, although the third wire 601 and the fourth wire 604 are also connected to the voltage loop where the first wire 603 and the second wire 606 are located, this circuit has resistance but no current (the potentiometer does not take current when measuring, and the internal resistance is considered to be infinite). Therefore, the resistance of the third wire 601 and the fourth wire 604 themselves has no effect on the measurement of the strain signal.

[0056] In a specific implementation, the wire connection between the signal acquisition device 6 and the first terminal 4 can be as follows: Figure 2 As shown, in Figure 2In the signal acquisition device 6, the signal output terminal is connected to the first terminal 4 of the first wire 603 and the second wire 606. The first wire 603 and the second wire 606 transmit the strain signal collected by the strain gauge 2 to the signal output terminal, i.e., the measured voltage V0. The wire resistance corresponding to the first wire 603 is RL6, i.e., resistance 503, and the wire resistance corresponding to the second wire 606 is RL3, i.e., resistance 506. The voltage generator 702 inside the signal acquisition device 6 ( Figure 2 The voltage generator 702 generates a voltage VG, and the third wire 601 and the fourth wire 604 provide a power supply voltage Vs to the strain gauge. The wire resistance corresponding to the third wire 601 is RL1, i.e., resistor 501, and the wire resistance corresponding to the fourth wire 604 is RL4, i.e., resistor 504. The signal comparator 703 inside the signal acquisition device 6 ( Figure 2 The first terminal 4 is connected via the fifth wire 602 and the sixth wire 605. The wire resistance corresponding to the fifth wire 602 is RL2, i.e., resistance 502, and the wire resistance corresponding to the sixth wire 605 is RL1, i.e., resistance 501.

[0057] In this embodiment, the third wire 601 and the fourth wire 604, which supply power to the strain gauge 2, have inherent resistance. This resistance may further increase due to factors such as temperature changes, potentially resulting in a lower supply voltage for the strain gauge 2. This can lead to unstable strain signal transmission and decreased accuracy of the strain signal. The signal comparator 703 compares the supply voltage with a preset voltage. If the supply voltage equals the preset voltage, no current flows through the fifth wire 602 and the sixth wire 605, and the resistance of both wires is unaffected, indicating normal strain signal transmission. If the supply voltage deviates from the preset voltage, the strain signal transmission is affected, leading to decreased accuracy. In this case, the signal comparator 703 adjusts the voltage generated by the voltage generator 702 to maintain the supply voltage in the same circuit at a normal level, ensuring the stability and accuracy of the strain signal transmission.

[0058] As an example, such as Figure 2 As shown, whenever factors such as temperature changes cause the signal comparator 703 to detect a deviation of the supply voltage Vs from the reference voltage Vref (i.e., ... Figure 2 When the preset voltage 704 is reached, the signal comparator 703 automatically adjusts the voltage VG generated by the voltage generator 702, so that adverse influencing factors are corrected in real time, thereby maintaining the power supply voltage Vs at a normal level. The strain signal V0 corresponds to the actual measured value at any point in time, effectively improving the accuracy of the strain signal.

[0059] In some embodiments of the present invention, comparing the supply voltage of the strain gauge 2 with a preset voltage and adjusting the voltage generated by the voltage generator 702 according to the comparison result of the supply voltage and the preset voltage includes:

[0060] If the supply voltage is less than the preset voltage, the voltage generator 702 is adjusted to increase the generated voltage so that the supply voltage is equal to the preset voltage.

[0061] In this embodiment, if the signal comparator 703 detects that the supply voltage of the strain gauge 2 is less than the preset voltage, such as the reference voltage of the circuit, the voltage generated by the voltage generator 702 can be increased to make the supply voltage equal to the preset voltage, so that the required voltage is normally supplied to the strain gauge 2, ensuring the stability of the strain signal transmission and the accuracy of the strain signal.

[0062] In some embodiments of the present invention, the first wire 603 is a positive signal wire, and the second wire 606 is a negative signal wire.

[0063] In this embodiment, the positive signal wire connects the positive terminal of the signal source to the signal receiving device or load in the circuit, and correspondingly, the negative signal wire connects the negative terminal of the signal source to the signal receiving device or load. The positive and negative signal wires work together to transmit the strain signal.

[0064] In some embodiments of the present invention, the third wire 601 is a positive excitation voltage wire, and the fourth wire 604 is a negative excitation voltage wire.

[0065] Excitation voltage is used to activate the power supply of a sensor or measuring element, enabling it to function properly and generate an output signal.

[0066] In this embodiment, the positive excitation voltage wire is responsible for providing the positive voltage portion of the power supply, and the negative excitation voltage wire is responsible for providing the negative voltage portion of the power supply. The positive and negative excitation voltage wires work together to ensure that the strain gauge 2 can work normally.

[0067] In some embodiments of the present invention, the fifth wire 602 is a positive induction lead and the sixth wire 605 is a negative induction lead.

[0068] In this embodiment, the positive induction lead is used to transmit the positive voltage portion of the power supply voltage signal, and the negative induction lead is used to transmit the negative voltage portion of the power supply voltage signal. The positive and negative induction leads work together to transmit the power supply voltage signal to the signal comparator 703, so that the signal comparator 703 compares the power supply voltage with a preset voltage.

[0069] In some embodiments of the present invention, the first terminal 4 is provided with at least four solder points, the at least four solder points including:

[0070] The first welding point 307 is used to weld the first wire 603;

[0071] The second welding point 305 is used to weld the second wire 606;

[0072] The third welding point 306 is used to weld the fourth wire 604 and the sixth wire 605;

[0073] The fourth welding point 304 is used to weld the third wire 601 and the fifth wire 602.

[0074] In this embodiment, the solder joint of the first terminal 4 is configured as follows: Figure 3 As shown, it includes at least four welding points, namely the fourth welding point 304, the second welding point 305, the third welding point 306, and the first welding point 307.

[0075] As an example, the welding relationship between the solder joint and the wire can be as follows: Figure 2 As shown, in Figure 2 In the circuit, the first wire 603 is soldered to the first terminal 4 via the first solder point 307; the second wire 606 is soldered to the first terminal 4 via the second solder point 305; the fourth wire 604 and the sixth wire 605 are soldered to the first terminal 4 via the third solder point 306; and the third wire 601 and the fifth wire 602 are soldered to the first terminal 4 via the fourth solder point 304. It should be noted that this is done to visually demonstrate the relationships between the wires in the circuit. Figure 2 The positions of the first welding point 307 and the third welding point 306 have been swapped. The actual welding point sequence should be the fourth welding point 304, the second welding point 305, the third welding point 306, and the first welding point 307.

[0076] In practical applications, the welding relationship between the first wire 603, the second wire 606, the third wire 601, the fourth wire 604, the fifth wire 602, the sixth wire 605 and the first terminal 4 can be as follows: Figure 4 As shown.

[0077] In some embodiments of the present invention, the signal output terminal is provided with a signal amplifier 700, which is used to amplify the strain signal to obtain the target strain signal.

[0078] In specific implementations, such as Figure 2As shown, the signal amplifier 700 is located at the signal output terminal where the first wire 603 and the second wire 606 are connected. The signal amplifier 700 can amplify the strain signal output by the strain gauge, outputting a more stable and reliable signal, which is convenient for signal acquisition. Moreover, the signal amplifier 700 has extremely high internal impedance and will not absorb current. Therefore, it has no effect on the current passing through the first wire 603 and the second wire 606. In addition, the voltage drop caused by the first wire 603 and the second wire 606 in this current loop is not within the measurement range. Therefore, the wire resistance 503 corresponding to the first wire 603 and the wire resistance 506 corresponding to the second wire 606 have no effect on the result of measuring the strain signal.

[0079] In some embodiments of the present invention, the signal amplifier 700 is connected to a meter 701, which is used to measure the target strain signal.

[0080] In specific implementations, such as Figure 2 As shown, the signal amplifier 700 is also connected to the meter 701, which is used to read the target strain signal obtained through signal amplification to reflect the strain condition of the tower. The meter 701 can be a measuring instrument such as an ammeter or a voltmeter.

[0081] In some embodiments of the present invention, the strain gauge 2 is connected to the first terminal 4 via a second terminal.

[0082] In specific implementations, such as Figure 4 As shown, strain gauge 2 is first connected to the second terminal through multiple wires, and then multiple wires are led out from the second terminal to connect to the first terminal 4.

[0083] An embodiment of the present invention also provides an offshore wind power generation device, which includes a strain signal acquisition system for offshore wind power components as described above.

[0084] The embodiments of the present invention have the following advantages: The strain signal acquisition system for offshore wind power components provided by the embodiments of the present invention includes: one or more strain gauges, installed on the tower of the offshore wind power generation device, for acquiring strain signals corresponding to the stress generated by the tower; a signal acquisition device, connected to a first terminal through at least six wires, one end of the first terminal being connected to the signal acquisition device and the other end being connected to the strain gauges, the signal acquisition device being used to receive and process the strain signals, and internally configured with: a signal output terminal, connected to the first terminal through a first wire and a second wire; a voltage generator, connected to the first terminal through a third wire and a fourth wire; and a signal comparator, connected to the first terminal through a fifth wire and a sixth wire; wherein, the signal comparator is used to adjust the voltage generated by the voltage generator according to the comparison result between the supply voltage and the preset voltage, and by adjusting the voltage generated by the voltage generator through the signal comparator, the supply voltage of the strain gauge is kept at a normal level, thereby making the strain signal acquired by the strain gauge more stable and more accurate, and reducing the adverse effects of factors such as wire resistance or temperature changes on the accuracy of strain signal acquisition.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0086] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0087] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0088] The strain signal acquisition system for offshore wind turbine components has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the invention. Therefore, the content of this specification should not be construed as a limitation of the invention.

Claims

1. A strain signal acquisition system for offshore wind turbine components, characterized in that, A strain signal acquisition system for offshore wind power generation devices includes: One or more strain gauges (2) are installed on the tower of the offshore wind power generation device to collect strain signals corresponding to the stress generated by the tower. A signal acquisition device (6) is connected to a first terminal (4) via at least six wires. One end of the first terminal (4) is connected to the signal acquisition device (6), and the other end is connected to the strain gauge (2). The signal acquisition device (6) is used to receive and process the strain signal. The signal acquisition device (6) is internally equipped with: The signal output terminal is connected to the first terminal (4) via a first wire (603) and a second wire (606); A voltage generator (702) is connected to the first terminal (4) via a third wire (601) and a fourth wire (604); A signal comparator (703) is connected to the first terminal (4) via a fifth wire (602) and a sixth wire (605); wherein the signal comparator (703) is used to compare the supply voltage of the strain gauge (2) with a preset voltage, and adjust the voltage generated by the voltage generator (702) according to the comparison result of the supply voltage and the preset voltage.

2. The strain signal acquisition system for offshore wind turbine components according to claim 1, characterized in that, The step of comparing the supply voltage of the strain gauge (2) with a preset voltage and adjusting the voltage generated by the voltage generator (702) according to the comparison result includes: If the supply voltage is less than the preset voltage, the voltage generator (702) is adjusted to increase the generated voltage so that the supply voltage is equal to the preset voltage.

3. The strain signal acquisition system for offshore wind turbine components according to claim 1, characterized in that, The first wire (603) is a positive signal wire, and the second wire (606) is a negative signal wire.

4. The strain signal acquisition system for offshore wind turbine components according to claim 1, characterized in that, The third conductor (601) is a positive excitation voltage conductor, and the fourth conductor (604) is a negative excitation voltage conductor.

5. The strain signal acquisition system for offshore wind turbine components according to claim 1, characterized in that, The fifth conductor (602) is a positive induction lead, and the sixth conductor (605) is a negative induction lead.

6. The strain signal acquisition system for offshore wind turbine components according to any one of claims 1-4, characterized in that, The first terminal (4) is provided with at least four solder points, the at least four solder points including: The first welding point (307) is used to weld the first wire (603); The second welding point (305) is used to weld the second wire (606); The third welding point (306) is used to weld the fourth wire (604) and the sixth wire (605); The fourth welding point (304) is used to weld the third conductor (601) and the fifth conductor (602).

7. The strain signal acquisition system for offshore wind turbine components according to any one of claims 1-4, characterized in that, The signal output terminal is provided with a signal amplifier (700), which is used to amplify the strain signal to obtain the target strain signal.

8. The strain signal acquisition system for offshore wind turbine components according to claim 7, characterized in that, The signal amplifier (700) is connected to a meter (701), which is used to measure the target strain signal.

9. The strain signal acquisition system for offshore wind turbine components according to any one of claims 1-4, characterized in that, When there are multiple strain gauges (2), the multiple strain gauges (2) are arranged symmetrically in two groups in the tower, and the multiple strain gauges (2) constitute a full bridge circuit.

10. The strain signal acquisition system for offshore wind turbine components according to any one of claims 1-4, characterized in that, The strain gauge (2) is connected to the first terminal (4) via the second terminal.

11. The strain signal acquisition system for offshore wind turbine components according to claim 1, characterized in that, The signal acquisition device (6) is equipped with a sampling frequency, and the signal acquisition device (6) receives the strain signal through the sampling frequency.

12. The strain signal acquisition system for offshore wind turbine components according to claim 8, characterized in that, The meter (701) includes an ammeter or a voltmeter.

13. The strain signal acquisition system for offshore wind turbine components according to claim 4, characterized in that, The positive excitation voltage conductor is responsible for providing the positive voltage of the power supply, and the negative excitation voltage conductor is responsible for providing the negative voltage of the power supply.

14. The strain signal acquisition system for offshore wind turbine components according to claim 5, characterized in that, The positive induction lead is used to transmit the positive voltage portion of the power supply voltage signal, and the negative induction lead is used to transmit the negative voltage portion of the power supply voltage signal.

15. An offshore wind power generation device, characterized in that, The offshore wind power generation device includes a strain signal acquisition system for offshore wind power components as described in any one of claims 1-14.

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