KR20130053283A - Multi-channel sensing apparatus and wind-power generation device using the same - Google Patents

Abstract

PURPOSE: A multichannel sensing device and a wind power generator using the same are provided to adaptationally sense the variation of physical quantity according to the type or driving state of equipment to be measured. CONSTITUTION: A multichannel sensing device(200) comprises multiple terminals(210-1 to 210-n), multiple signal detecting parts(220-1 to 220-n), an ADC(Analog-to-Digital Converter)(225), a control part(230), and a communication module(240). A number of the terminals are corresponding to a number of channels(n). The terminals are connected to multiple sensing parts(100-1 to 100-n). The signal detecting parts are electrically connected to the terminals; supplies constant voltage and constant current to the sensing parts; and detects detecting signals transmitted from the sensing parts. The ADC converts analog detecting signals transmitted from the sensing parts to digital detecting signals and transmits the digital detecting signals to the control part. The control part transmits the digital detecting signals to a user terminal(300) through the communication module and processes user commands transmitted from the user terminal. The communication module connects the multichannel sensing device to the user terminal. [Reference numerals] (110-1,110-n) MEMS sensor; (120-1,120-n) ICP sensor; (223-1,223-n) Filtering part; (230) Control part; (240) Communication module; (300) User terminal; (AA,221-n) Power supply part; (BB,222-n) Switch part

Description

MULTI-CHANNEL SENSING APPARATUS AND WIND-POWER GENERATION DEVICE USING THE SAME}

The present invention relates to a multi-channel sensing device and a wind power generator using the same, and more particularly, to a multi-channel sensing device capable of adaptively switching a sensor and a wind power generator using the same.

The wind power generator has a structure in which a heavy structure such as a nacelle including a speed increaser and a generator and a rotor in which a blade is created is installed on an upper part of a tower of several tens of meters. The rotor converts the wind into a rotational force and transmits it to the increaser, and the increaser increases the rotational speed and transmits it to the generator, and the generator converts the rotational force into electrical energy and outputs it. The gearbox obtains the optimum rotational speed from the rotational force of the rotor to produce the maximum power from the generator.

The wind power generator should be adaptively driven in various situations according to changes in the environment such as wind direction and wind speed, and the driving state of the wind power generator should be monitored and controlled in real time by the operator. To this end, various sensors capable of detecting a driving state of the wind turbine are installed in the wind turbine.

Korean Patent Laid-Open Publication No. 10-2009-0099921 (hereinafter, referred to as a prior art) discloses a configuration for checking an abnormality of a sensor and controlling a driving state of a wind power generator according to whether a signal detected by multiple sensors is input. However, the prior art does not disclose a method for accurately detecting a physical quantity generated by various characteristics in a nacelle, a rotor, and the like of a wind turbine.

In a nacelle, a speed increaser, a generator, and the like of a wind turbine, vibrations, noises, shocks, etc. may occur due to environmental changes and the aging of equipment. That is, physical quantities such as vibration, noise, shock, etc. appear in various ranges of change characteristics depending on the type of equipment or driving state of the wind power generator.

In order to detect these various physical quantities, a sensor that can more accurately detect the characteristics of the corresponding physical quantity should be installed. However, one specific sensor has a high sensing efficiency for a specific range of physical quantity change, while the other has a low sensing efficiency for a specific range of physical quantity change. Therefore, it is difficult to accurately detect a change in physical quantity of various ranges of the measurement target device with one sensor.

The technical problem to be solved by the present invention is to provide a multi-channel sensing device that can adaptively detect a variety of changes in the physical quantity according to the type or driving state of the measurement target device and a wind power generator using the same.

The multi-channel sensing device according to an embodiment of the present invention includes a first sensor having a maximum sensing efficiency for a physical quantity in a first frequency range and a second sensor having a maximum sensing efficiency for a physical quantity in a second frequency range. One or more signal detectors connected to a plurality of sensing units for generating a signal, and detecting one or more detection signals transmitted from the plurality of sensing units, and one or more sensing signals of the first and second sensors to be detected. And a control unit for controlling one or more signal detection units, wherein the first sensor and the second sensor of the sensing unit are installed in the same measurement target device to generate a detection signal for a physical quantity of the same measurement target device.

The signal detection unit, the switch unit for selectively transmitting any one of the analog detection signal of the first sensor and the analog detection signal of the second sensor under the control of the control unit, connected to the switch unit, through the switch unit It may include at least one of a filtering unit for removing high-frequency noise of the transmitted analog sense signal, and a power supply unit for supplying a constant voltage and a constant current to the first sensor and the second sensor.

The apparatus may further include an analog-to-digital converter (ADC) connected to the filtering unit and converting the analog sense signal from which the high frequency noise is removed into a digital sense signal and transferring the analog sense signal to the control unit.

The apparatus may further include a communication module configured to transmit a detection signal detected by the one or more signal detection units to a user terminal.

The controller may control the one or more signal detectors to detect one of the first sensor and the second sensor according to a user command transmitted from a user terminal.

The controller may generate an alarm for a measurement target device in which an abnormality occurs by comparing a detection signal detected by the one or more signal detection units with a previously stored reference value.

Wind generator according to another embodiment of the present invention is a rotor having a plurality of blades attached, the main shaft is connected to the rotor to transfer the torque of the rotor, the rotation of the rotor using the torque of the rotor for high speed rotation for the generator A speed increasing unit converting to a power generating unit, a power generating unit generating electric energy by using the high speed rotation for the generator converted by the speed increasing unit, a brake unit mechanically stopping the rotation of the rotor, and the rotor, the main shaft, the speed increasing unit, And a multi-channel sensing device for detecting a detection signal generated by a sensing unit installed in at least one of the power generation unit and the brake unit, wherein the sensing unit has a first sensing efficiency having a maximum sensing efficiency with respect to a physical quantity in a first frequency range. A sensor and a second sensor having a maximum sensing efficiency with respect to a physical quantity in a second frequency range, wherein the first sensor and the second sensor The multi-channel sensing device selects one of the first sensor and the second sensor as an active sensor so that a detection signal of any one of the first sensor and the second sensor is detected. do.

The multi-channel sensing device may include a switch unit for selectively transmitting any one of an analog signal of the first sensor and an analog detection signal of the second sensor, and an analog detection signal connected to the switch unit and transmitted through the switch unit. A filtering unit for removing high frequency noise of the power supply unit, a power supply unit supplying a constant voltage and a constant current to the first sensor and the second sensor, and the switch unit to detect a detection signal of any one of the first sensor and the second sensor It may include a control unit for controlling.

The multi-channel sensing device may further include an ADC connected to the filtering unit and converting the analog sense signal from which the high frequency noise is removed into a digital sense signal.

The controller may control the switch unit to detect a detection signal of any one of the first sensor and the second sensor according to a user command transmitted from a user terminal.

A sensor having a high detection efficiency can be adaptively selected for various ranges of physical quantities generated according to the type or driving state of the measurement target device, thereby more accurately detecting the state of the measurement target device.

1 is a block diagram schematically illustrating a multi-channel sensing device according to an embodiment of the present invention.
2 is a flowchart illustrating a sensor switching process of switching an active sensor of a sensing unit by a multichannel sensing apparatus according to an exemplary embodiment of the present invention.
3 is a schematic diagram illustrating a wind power generator using a multi-channel sensing device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In addition, in the various embodiments, components having the same configuration are represented by the same reference symbols in the first embodiment. In the other embodiments, only components different from those in the first embodiment will be described .

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a block diagram schematically illustrating a multi-channel sensing device according to an embodiment of the present invention.

Referring to FIG. 1, the multichannel sensing device 200 is connected to a plurality of terminals 210-1 to 210-n and a plurality of terminals 210-1 to 210-n corresponding to the number of channels n. A plurality of signal detectors 220-1 to 220-n, an ADC 225, a controller 230, and a communication module 240 are included.

The terminals 210-1 to 210-n are provided in a number corresponding to the number n of channels accommodated by the multi-channel sensing device 200. Each of the terminals 210-1 to 210-n is connected to each of the sensing units 100-1 to 100-n. The plurality of terminals 210-1 to 210-n may be coaxial cable connection terminals connected to the plurality of sensing units 100-1 to 100-n by a coaxial cable method. The coaxial cable method is a cable system capable of supplying power by a coaxial core, and is suitable for large capacity transmission or broadband signal transmission, and has excellent high frequency characteristics due to less crosstalk due to electronic and electrostatic coupling. However, the connection configuration between the plurality of terminals 210-1 to 210-n and the plurality of sensing units 100-1 to 100-n is not limited to the coaxial cable method, and the plurality of sensing units 100-1 to 100-n) may be connected in various forms according to the type of sensor included.

Each of the sensing units 100-1 to 100-n includes a micro electro mechanical system (MEMS) sensor 110-1 to 110-n and an integrated circuit piezoelectric (ICP) sensor 120-1 to 120-n. Include one by one.

The MEMS sensors 110-1 to 110-n may receive a constant voltage and generate a detection signal for a physical quantity such as vibration, noise, or shock of a device in which the sensor is installed as a voltage. The ICP sensors 120-1 to 120-n may receive a constant voltage and a constant current to generate a detection signal for a physical quantity such as vibration, noise, shock, etc. of a device in which the sensor is installed. In general, ICP sensors have high sensing efficiency for physical quantities in a relatively high frequency range, while MEMS sensors have high sensing efficiency for physical quantities in a relatively low frequency range. The ICP sensor is somewhat different depending on the performance of the sensor, but has an ability to detect physical quantities in the frequency range of approximately 1 Hz to 8000 Hz. MEMS sensors vary somewhat depending on the performance of the sensor, but have the ability to detect physical quantities in the frequency range of approximately DC to 100 Hz. That is, the MEMS sensor and the ICP sensor may have maximum sensing efficiency with respect to physical quantities in different frequency ranges.

The MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n included in one sensing unit may be installed on the same measurement object to generate a detection signal for the same measurement object. Since the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n have maximum sensing efficiency for physical quantities in different frequency ranges, the ICP sensor 120-1 for the same measurement object. To 120-n) may be accurately detected by the MEMS sensors 110-1 to 110-n, and may not be accurately detected by the MEMS sensors 110-1 to 110-n. Can be accurately detected at (120-1 to 120-n).

The plurality of signal detectors 220-1 to 220-n supply a constant voltage and a constant current to the plurality of sensing units 100-1 to 100-n, and transfer them from the plurality of sensing units 100-1 to 100-n. Detect the detected detection signal. The signal detectors 220-1 to 220-n are electrically connected to the terminals 210-1 to 210-n in a one-to-one correspondence.

Each of the signal detectors 220-1 to 220-n includes a power supply unit 221-1 to 221-n, a switch unit 222-1 to 222-n, and a filtering unit 223-1 to 223-n. It includes.

The power supply units 221-1 to 221-n are MEMS sensors 110-1 to 110-n and ICP sensors 120-1 to 120-connected through coaxial cables connected to the terminals 210-1 to 210-n. n) supplies constant voltage and constant current. The power supply units 221-1 to 221-n use constant power required by the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n using power supplied from an external power source. It can generate a constant current. The MEMS sensors 110-1 to 110-n generate a detection signal using the constant voltage supplied from the power supply units 221-1 to 221-n. The ICP sensors 120-1 through 120-n generate a detection signal by using the constant voltage and the constant current supplied from the power supply units 221-1 through 221-n.

The switch units 222-1 to 222-n selectively filter detection signals of the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n under the control of the controller 230. It passes to parts 223-1 to 223-n. The switch units 222-1 to 222-n may be provided as junction transistors, field effect transistors, or the like. Detection of the filtering units 223-1 to 223-n by the switch units 222-1 to 222-n among the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n. Sensors that transmit signals are called active sensors.

The filtering units 223-1 to 223-n are connected to the switch units 222-1 to 222-n, and include a low pass filter (LPF) circuit. The filtering units 223-1 to 223-n remove the high frequency noise included in the analog sensing signal transmitted through the switch units 222-1 to 222-n and transfer the same to the ADC 225. Since the high frequency noise is removed from the sensed signal, only the pure sensed signal can be transmitted to the ADC 225, and the measurement error caused by the noise can be prevented.

The analog-to-digital converter (ADC) 225 is connected to the filtering units 223-1 to 223-n to connect the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n. The analog sense signal transmitted from the digital signal is converted to the control unit 230 and transmitted. The ADC may be a multichannel ADC capable of converting a plurality of analog sense signals into a plurality of digital sense signals.

The controller 230 transmits the digital sensing signal transmitted from the ADC 225 to the user terminal 300 through the communication module 240 and processes the user command transmitted from the user terminal 300. The controller 230 may be provided in the form of a microprocessor.

The control unit 230 switches the switch units 222-1 to 222-n to control the switch units 222-1 to 222-n according to the MEMS sensor selection signal or the ICP sensor selection signal transmitted from the user terminal 300. n). The switching signal controls the plurality of signal detectors 220-1 to 220-n such that one of the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n is detected. Is a control signal. That is, the switching signal is a control signal for converting any one of the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n into an active sensor.

The user may transmit a user command (MEMS sensor selection signal or ICP sensor selection signal) for selecting an active sensor of each of the plurality of sensing units 100-1 to 100-n to the controller 230 through the user terminal 300. The controller 230 may transmit a switching signal to each of the plurality of switch units 222-1 to 222-n according to a user command.

The communication module 240 connects the multi-channel sensing device 200 to interwork with the user terminal 300. That is, the digital sensing signal processed by the controller 230 is transmitted to the user terminal 300, and a user command transmitted from the user terminal 300 is received and transmitted to the controller 230. The communication module 240 may use a wired or wireless network using TCP / IP (Transmission Control Protocol / Internet Protocol). Since TCP / IP supports a transmission speed of 100 MHz or more, the user terminal 300 may monitor the multi-channel sensing device 200 in real time.

The user terminal 300 is connected to the multi-channel sensing device 200 through a wired or wireless network to process signals transmitted and received, a personal computer (PC), a personal digital assistant (PDA), a notebook computer, a smart phone, and the like. It includes. The user terminal 300 may display the physical quantities measured by the plurality of sensing units 100-1 to 100-n in real time. The user terminal 300 stores a reference value according to an environment of a device in which the plurality of sensing units 100-1 to 100-n are installed, and compares the measured signal with the reference value transmitted from the multi-channel sensing device 200 and measures the measured value. Display the target device status to the user. The user terminal 300 may generate an alarm for a measurement target device having an abnormality by comparing the detection signal with a reference value.

In the above description, the user terminal 300 provided separately from the multi-channel sensing device 200 displays the state of the measurement target device to the user by comparing the detection signal with a reference value, and generates an alarm for the measurement target device in which the abnormality occurs. Explained. However, the multi-channel sensing device 200 may include a separate display device, and the controller 230 compares the detection signal with a previously stored reference value to display the state of the measurement target device to the user through the display device. An alarm may be generated for the measurement target device.

2 is a flowchart illustrating a sensor switching process of switching an active sensor of a sensing unit by a multichannel sensing apparatus according to an exemplary embodiment of the present invention.

1 and 2, the power supply units 221-1 to 221-n may include MEMS sensors 110-1 to 110-n and ICP sensors of the sensing units 100-1 to 100-n connected thereto, respectively. 120-1 to 120-n) supplies a constant voltage and a constant current (S110).

The MEMS sensors 110-1 to 110-n generate a detection signal using the supplied constant voltage, and the ICP sensors 120-1 to 120-n generate a detection signal using the supplied constant voltage and constant current ( S120). The MEMS sensors 110-1 to 110-n generate first sensing signals corresponding to changes in the constant voltage according to changes in physical quantities such as vibration, noise, and impact of the measurement target device. The ICP sensors 120-1 to 120-n generate second sensing signals corresponding to changes in the constant voltage according to changes in physical quantities such as vibration, noise, and impact of the measurement target device.

The switch units 222-1 to 222-n initially filter any one of the MEMS sensors 110-1 to 110-n and the ICP sensors 120-1 to 120-n. n) can be kept connected. The switch units 222-1 to 222-n transfer one of the first sensing signal and the second sensing signal to the filtering units 223-1 to 223-n according to the initial connection state.

Hereinafter, it is assumed that vibration occurs in a device to which the MEMS sensor 110-1 and the ICP sensor 120-1 of the first sensing unit 100-1 are attached. The MEMS sensor 110-1 generates the first sensing signal, and the ICP sensor 120-1 generates the second sensing signal. The remaining sensing unit that does not generate vibration does not generate a detection signal.

The filtering unit 223-1 removes high frequency noise from the analog sense signal transmitted through the switch unit 222-1 (S130).

The ADC 224-1 converts the analog sense signal from which the high frequency noise has been removed into a digital sense signal (S140). The digital sensing signal is transmitted to the controller 230.

The controller 230 transmits the digital sensing signal to the user terminal 300 (S150). The user terminal 300 displays the physical quantity measured by the first sensing unit 100-1 in real time according to the digital sensing signal. The user may select one of the MEMS sensor 110-1 and the ICP sensor 120-1 as an active sensor based on the characteristics of the physical quantity measured by the user terminal 300. That is, the user may select either one according to the sensing efficiency of the MEMS sensor 110-1 and the ICP sensor 120-1.

The controller 230 receives a user command from the user terminal 300, and determines whether there is a MEMS sensor selection signal (S160).

When the MEMS sensor selection signal is received, the controller 230 transmits the first switching signal to the switch unit 222-1 to select the MEMS sensor 110-1 as the active sensor of the first sensing unit 100-1. (S170). In this case, the switch unit 222-1 allows the MEMS sensor 110-1 to be connected to the filtering unit 223-1 according to the first switching signal.

When the ICP sensor selection signal is received, the controller 230 transmits the second switching signal to the switch unit 222-1 to select the ICP sensor 120-1 as an active sensor of the first sensing unit 100-1. (S180). In this case, the switch unit 222-1 allows the ICP sensor 120-1 to be connected to the filtering unit 223-1 according to the second switching signal.

Thereafter, the first sensing unit 100-1 performs sensing using the selected active sensor (S190). Sensing can be performed using MEMS sensors 110-1 to 110-n or ICP sensors 120-1 to 120-n with high detection efficiency according to the frequency characteristics of the physical quantities, so that the physical quantity is more precisely measured for the measurement object. Can be measured.

The multi-channel sensing device 200 may adaptively select a sensor having high detection efficiency for various physical quantities generated according to the type or driving state of the measurement target device, and thus more accurately detect the state of the measurement target device. can do.

The multi-channel sensing device 200 may be applied to various devices or facilities, such as a power generation device, a power transmission device, and a security detection device. For example, the multi-channel sensing device 200 may be installed on various components of a power generation device or a transmission device to detect vibrations, noises, shocks, etc. of each component. Alternatively, the multi-channel sensing device 200 may be installed in various doors or windows of a building to detect vibrations, noises, shocks, and the like caused by intruders.

Hereinafter, a wind power generator including the multichannel sensing device 200 will be described.

3 is a schematic diagram illustrating a wind power generator using a multi-channel sensing device according to an embodiment of the present invention.

Referring to FIG. 3, the wind power generator includes a rotor 10 that is rotated by wind, a nacelle 20 that is connected to the rotor 10 to generate electrical energy according to the rotation of the rotor 10, and a nacelle 20. It includes a tower 40 for supporting.

The rotor 10 includes a hub 11 connected to the main shaft 21, a plurality of blades 12 radially formed at the hub 11, and a pitch driver 13 for changing an angle of the blade 12. do.

The hub 11 connects the plurality of blades 12 and the main shaft 21. The plurality of blades 12 may be formed in the shape of an airfoil that generates lift by the action of the wind. The pitch driver 13 changes an angle at which the chord lines of the plurality of blades 12 form a reference plane perpendicular to the axis 21.

The nacelle 20 includes a main shaft 21, a speed increasing unit 22, a brake unit 23, a power generating unit 24, a yaw drive 25, yaw bearings 26, and a multi-channel. And a sensing device 30.

The main shaft 21 is connected to the rotor 10 to transmit the torque of the rotor 10 to the speed increasing unit 22. The speed increasing unit 22 converts the rotation of the low speed rotor 10 to the high speed rotation for the generator using the torque of the rotor 10. The speed increasing unit 22 may be configured in various forms according to various combinations of cylindrical gears and planetary gears. The brake unit 23 mechanically stops the rotation of the rotor 10. The brake portion 23 includes a mechanical disc brake. The power generation unit 24 generates electric energy by using a high speed rotation for the generator converted by the speed increasing unit 22. The power generation unit 24 delivers the generated electrical energy to the grid system. The grid system includes a battery that stores the power produced by the wind turbine, a load consuming the produced power, or a commercial grid. The yaw driver 25 rotates the yaw bearing 26 under the control of the nacelle angle control unit 33 to change the direction of the nacelle 20.

The multi-channel sensing device 30 detects detection signals generated by the plurality of sensing units S1 to S6 that measure physical states of a plurality of components included in the wind power generator. The plurality of sensing units S1 to S6 may be installed in at least one of the rotor 10, the main shaft 21, the speed increasing unit 22, the brake unit 23, the power generation unit 24, and the yaw driving unit 25. Can be. Each of the plurality of sensing units S1 to S6 includes a MEMS sensor and an ICP sensor.

The multi-channel sensing device 30 may select one of a MEMS sensor and an ICP sensor as an active sensor of each of the sensing units S1 to S6 according to a user command.

The multi-channel sensing device 30 may transmit a detection signal transmitted from each of the sensing units S1 to S6 to a user terminal (not shown). The user terminal may compare the detection signal with the reference value to display the state and malfunction of the wind turbine. Alternatively, the multi-channel sensing device 30 may compare the detection signal with a reference value to inform the user terminal of the state and malfunction of the wind turbine.

For example, when the number of revolutions of the rotor 10 is suddenly increased due to a sudden gust of wind or wind above the stopping speed, the first sensing unit S1 generates a detection signal according to the vibration of the rotor 10 to sense multi-channel. To the device 200. The multi-channel sensing device 30 may select any one of a MEMS sensor and an ICP sensor as an active sensor, and detect an accurate detection signal of a vibration state of the rotor 10 and transmit the detected signal to a user terminal.

In addition, the multi-channel sensing device 200 detects signals such as vibration, noise, shock, etc. of the main shaft 21, the speed increasing unit 22, the brake unit 23, the power generating unit 24, and the yaw driving unit 25. Detects and delivers to the user terminal, so that the user can monitor the status and malfunction of each component of the wind turbine.

Sensing unit installed to monitor the status and malfunction of the components of the wind turbine can be installed in various ways in addition to the above-described parts, it can generate a detection signal for various conditions such as vibration, noise, shock of each component have. Accordingly, the multi-channel sensing device 200 may detect the state and malfunction of various components of the wind turbine.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are illustrative and explanatory only and are intended to be illustrative of the invention and are not to be construed as limiting the scope of the invention as defined by the appended claims. It is not. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: sensing unit
110: MEMS sensor
120: ICP sensor
200: multi-channel sensing device
210: terminal
220: signal detector
221: power supply
222: switch unit
223: filtering unit
225: ADC
230:
240: communication module
300: user terminal

Claims (10)

A first sensor having a maximum sensing efficiency with respect to a physical quantity in a first frequency range and a second sensor having a maximum sensing efficiency with a physical quantity in a second frequency range, and connected to a plurality of sensing units generating a sensing signal; At least one signal detector detecting a detection signal transmitted from the plurality of sensing units; And
And a controller configured to control the at least one signal detector to detect one of the first sensor and the second sensor.
The first sensor and the second sensor of the sensing unit is installed in the same measurement target device to generate a sensing signal for the physical quantity of the same measurement target device. The method according to claim 1,
Wherein the signal detecting unit comprises:
A switch unit for selectively transmitting any one of an analog detection signal of the first sensor and an analog detection signal of the second sensor under the control of the controller;
A filtering unit connected to the switch unit and removing high frequency noise of an analog detection signal transmitted through the switch unit; And
And at least one of a power supply unit supplying a constant voltage and a constant current to the first sensor and the second sensor. The method of claim 2,
And an analog-to-digital converter (ADC) connected to the filtering unit and configured to convert the analog sense signal from which the high frequency noise has been removed into a digital sense signal and transmit the analog sense signal to the controller. The method according to claim 1,
The multi-channel sensing device further comprises a communication module for transmitting the detection signal detected by the at least one signal detector to a user terminal. 5. The method of claim 4,
The control unit is a multi-channel sensing device for controlling the one or more signal detection unit to detect a detection signal of any one of the first sensor and the second sensor according to a user command transmitted from a user terminal. The method according to claim 1,
The control unit is a multi-channel sensing device for generating an alarm for the measurement target device is abnormal by comparing the detection signal detected by the at least one signal detection unit with a previously stored reference value. A rotor having a plurality of blades attached thereto;
A main shaft connected to the rotor to transmit torque of the rotor;
An acceleration unit for converting the rotation of the rotor into a high speed rotation for the generator by using the torque of the rotor;
A power generation unit generating electric energy by using the high speed rotation for the generator converted by the speed increasing unit;
A brake unit which mechanically stops rotation of the rotor; And
And a multi-channel sensing device for detecting a detection signal generated by a sensing unit installed in at least one of the rotor, the main shaft, the speed increasing unit, the power generation unit, and the brake unit.
The sensing unit includes a first sensor having a maximum sensing efficiency with respect to a physical quantity in a first frequency range and a second sensor having a maximum sensing efficiency with a physical quantity in a second frequency range, wherein the first sensor and the second sensor The multi-channel sensing device selects one of the first sensor and the second sensor as an active sensor so that a detection signal of any one of the first sensor and the second sensor is detected. Wind power generation device. The method of claim 7, wherein
The multi-channel sensing device,
A switch unit for selectively transferring any one of an analog signal of the first sensor and an analog detection signal of the second sensor;
A filtering unit connected to the switch unit and removing high frequency noise of an analog detection signal transmitted through the switch unit;
A power supply unit supplying a constant voltage and a constant current to the first sensor and the second sensor; And
And a controller configured to control the switch unit to detect a detection signal of any one of the first sensor and the second sensor. The method of claim 8,
The multi-channel sensing device,
And an ADC connected to the filtering unit and converting the analog sense signal from which the high frequency noise has been removed into a digital sense signal. 10. The method of claim 9,
The control unit controls the switch unit to detect the detection signal of any one of the first sensor and the second sensor according to a user command transmitted from a user terminal.

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