WO2014051030A1 - センサ装置、振動検知システム、センサユニット、情報処理装置、振動検知方法、及びプログラム - Google Patents
センサ装置、振動検知システム、センサユニット、情報処理装置、振動検知方法、及びプログラム Download PDFInfo
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- WO2014051030A1 WO2014051030A1 PCT/JP2013/076210 JP2013076210W WO2014051030A1 WO 2014051030 A1 WO2014051030 A1 WO 2014051030A1 JP 2013076210 W JP2013076210 W JP 2013076210W WO 2014051030 A1 WO2014051030 A1 WO 2014051030A1
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- vibration
- phase difference
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- acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H5/00—Measuring propagation velocity of ultrasonic, sonic or infrasonic waves, e.g. of pressure waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
Definitions
- the present invention relates to a sensor device, a vibration detection system, a sensor unit, an information processing device, a vibration detection method, and a program for detecting vibration from a detection target.
- the vibration generated from the detected object serving as a vibration source such as a water pipe includes vibrations in various directions as well as the direction perpendicular to the surface of the detected object. For this reason, it is necessary to detect vibrations in various directions in order to predict and prevent deterioration.
- a piezoelectric acceleration sensor as in Patent Document 1 or an acceleration sensor using MEMS (Micro Electro Mechanical Systems) as in Patent Document 2 Is used.
- Patent Document 3 discloses an X axis orthogonal to a detection direction (Z axis) based on detection outputs with different phases detected by three vibration sensors that detect vibration acceleration in one axis direction. A technique for detecting an external force in the Y-axis direction is disclosed.
- Patent Document 1 a triaxial acceleration sensor such as Patent Document 1 or Patent Document 2 is generally expensive and increases the manufacturing cost of the sensor unit. As a result, the cost of the entire system using the sensor unit increases.
- Patent Document 3 an inexpensive uniaxial vibration sensor is used, but at least three vibration sensors are required. In this regard, Patent Document 3 has room for cost reduction.
- An object of the present invention is to provide a sensor device, a vibration detection system, a sensor unit, an information processing device, a vibration detection method, and a program that can detect vibrations in a plurality of axial directions at low cost.
- a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection object are arranged in a uniform direction;
- a first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- a phase difference calculation unit for calculating Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating A sensor device is provided.
- a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection target include a sensor unit having a first sensor group arranged in a uniform direction, and an information processing device,
- the sensor unit is A transmitter that transmits a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- the information processing apparatus includes: A receiver for receiving the plurality of first signals; A phase difference calculating unit that calculates a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating A vibration detection system is provided.
- a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection object are arranged in a uniform direction;
- a transmission unit for transmitting a plurality of first signals to the outside, each indicating a vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- a sensor unit is provided.
- a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detection object is an information processing apparatus that communicates with a sensor unit having a first sensor group that is arranged in the same direction.
- a receiving unit that receives a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- a phase difference calculating unit that calculates a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating An information processing apparatus is provided.
- a sensor device having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detected object are arranged in a uniform direction.
- a first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- a vibration detection method is provided.
- Vibration detection realized by a sensor unit having a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to a detection target are arranged in the same direction, and an information processing apparatus A method
- the sensor unit is Transmitting a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- the information processing apparatus is Receiving the plurality of first signals; Calculating a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- a vibration detection method is provided.
- a sensor device having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detection target are arranged in a uniform direction, A first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- a phase difference calculation function for calculating Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used. Acceleration calculation function to calculate A program for realizing the above is provided.
- a program for operating an information processing apparatus that communicates with a sensor unit having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detected object are aligned.
- a receiving function for receiving a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- a phase difference calculation function for calculating a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used. Acceleration calculation function to calculate A program for realizing the above is provided.
- a sensor device a vibration detection system, a sensor unit, an information processing device, a vibration detection method, and a program capable of detecting vibrations in a plurality of axial directions at low cost are provided.
- FIG. 1 is a diagram illustrating a configuration example of a vibration detection system 1 according to the first embodiment.
- the vibration detection system 1 includes a sensor unit 100 and an information processing device 200.
- the sensor unit 100 includes a plurality of first vibration sensors 12 included in the first sensor group 13 and a transmission unit 110.
- the plurality of first vibration sensors 12 included in the first sensor group 13 detects the vibration acceleration of the vibration in a certain direction (detection direction) generated from the detection target in which the sensor unit is installed. Convert to signal.
- the transmission unit 110 acquires each signal (first signal) generated for each first vibration sensor 12 included in the first sensor group 13 and transmits the signal to the information processing apparatus 200 by wireless communication or wired communication.
- FIG. 2 is a diagram illustrating a device configuration example of the sensor unit 100 according to the first embodiment.
- 2A is a perspective view of the sensor unit 100
- FIG. 2B is a cross-sectional view of the sensor unit 100 taken along the AA ′ plane.
- the sensor unit 100 includes a unit housing 11 and first vibration sensors 12a and 12b.
- the first vibration sensors 12a and 12b are arranged in parallel as the first sensor group 13 in the same direction.
- the 1st sensor group 13 of this embodiment has the two 1st vibration sensors 12, you may have the 3 or more 1st vibration sensors 12.
- the respective first vibration sensors 12 are aligned and arranged in parallel.
- the first vibration sensors 12a and 12b detect vertical vibrations of the unit housing 11.
- 1st vibration sensor 12a, 12b the piezoelectric vibration sensor using the polarization change by bending of piezoelectric ceramics is employable.
- one end of the piezoelectric ceramic is fixed to the support, and the other end is an open end. Then, a voltage is generated when the open end side of the piezoelectric ceramic vibrates, and a signal indicating vibration acceleration is generated.
- the structure of the first vibration sensors 12a and 12b is not particularly limited, but the piezoelectric ceramics are bonded to both surfaces of the metal shim material even in the unimorph type in which the piezoelectric ceramics are bonded to one surface of the metal shim material. It may be a bimorph type or may have a structure in which a metal shim material and an outer peripheral fixing ring are sandwiched by a polymer film in order to expand vibration. Moreover, it is preferable that the first vibration sensors 12a and 12b are arranged at intervals as much as possible in order to increase the difference between signals generated in the first vibration sensors 12a and 12b.
- the sensor unit 100 is installed on a body to be detected which is a vibration source, such as a water pipe.
- a vibration source such as a water pipe.
- As an installation method of the sensor unit 100 there is a method of installing the sensor unit 100 on a metal portion of a detection target by a magnet (not shown) attached to the bottom surface of the sensor unit 100, but is not limited thereto.
- the sensor unit 100 may be installed by, for example, a method of bonding using a polymer adhesive or the like as long as it does not suppress vibration from the detection target.
- the information processing apparatus 200 includes a reception unit 210, a phase difference calculation unit 220, and an acceleration calculation unit 230.
- the receiving unit 210 receives a plurality of first signals transmitted from the transmitting unit 110 of the sensor unit 100.
- the phase difference calculation unit 220 calculates a first phase difference indicating a phase difference between the plurality of first signals based on the difference between the plurality of first signals.
- the phase difference calculation unit 220 detects each first signal detected by the adjacent first vibration sensors 12.
- the first phase difference is calculated by obtaining each phase difference and obtaining an average value or an intermediate value thereof.
- the acceleration calculation unit 230 calculates the vibration acceleration in the first direction and the vibration acceleration in the second direction based on the first phase difference and the plurality of first signals.
- the first direction is a direction perpendicular to the surface where the plurality of first vibration sensors are arranged.
- the sensor unit 100 is installed on the detection target so that the first direction is a direction perpendicular to the propagation direction of vibration in the detection target.
- the second direction is a direction parallel to the surface on which the plurality of first vibration sensors 12 are arranged.
- the sensor unit 100 is installed in the detected body so that the second direction is parallel to the vibration propagation direction in the detected body.
- each component of the sensor unit 100 and the information processing apparatus 200 shown in each figure is not a hardware unit configuration but a functional unit block.
- Each component of the sensor unit 100 and the information processing apparatus 200 includes a CPU, a memory of an arbitrary computer, a program for realizing the components of the figure loaded in the memory, a storage medium such as a hard disk for storing the program, and a network connection It is realized by any combination of hardware and software, with a focus on the interface. There are various modifications of the implementation method and apparatus.
- FIG. 3 is a sequence diagram showing a processing flow of the vibration detection system 1 according to the first embodiment.
- the sensor unit 100 generates a first signal indicating the vibration acceleration of the vibration detected by each of the first vibration sensors 12a and 12b included in the first sensor group (S102).
- FIG. 4A is a cross-sectional view of the sensor unit 100.
- FIG. 4B is a cross-sectional view of the sensor unit 100 when vibration is generated in the detection object.
- FIG. 5 is a diagram illustrating an example of vibration acceleration detected by the first vibration sensors 12a and 12b.
- the waveform indicated by the solid line represents the first signal 501 indicating the vibration acceleration detected by the first vibration sensor 12a
- the waveform indicated by the dotted line is detected by the first vibration sensor 12a.
- a first signal 502 indicating the vibration acceleration is shown.
- the sensor unit 100 amplifies each first signal generated by the first vibration sensors 12a and 12b by a signal amplification circuit (not shown) and transmits the amplified signal to the information processing apparatus 200 (S104).
- each first signal may be amplified before the phase difference is calculated, and the information processing apparatus 200 may include a signal amplification circuit to amplify each first signal.
- the information processing apparatus 200 calculates a first phase difference indicating a phase difference between the first signals based on the received first signals (S106). Specifically, the information processing apparatus 200 can determine the propagation velocity v of vibration with respect to the detection target based on signals generated by the first vibration sensor 12a and the first vibration sensor 12b. Then, the information processing apparatus 200 is based on the vibration propagation velocity v and the time difference ⁇ t between the first signal generated by the first vibration sensor 12a and the first signal generated by the first vibration sensor 12b. Thus, the distance L of the wave propagating in the horizontal direction during the time difference ⁇ t can be obtained.
- the information processing apparatus 200 calculates the phase difference (first phase difference) based on the distance L and the distance d between the first vibration sensor 12a and the first vibration sensors 12a and 12b as shown in FIG. calculate. Further, the time difference ⁇ t can be obtained by, for example, the difference in time at which each signal takes the maximum value, as shown in FIG.
- the phase difference is calculated based on the following equation 1.
- the information processing apparatus 200 calculates the vibration acceleration in the first direction and the vibration acceleration in the second direction based on the first phase difference calculated in S106 and each first signal (S108).
- FIG. 6 is a diagram illustrating an example in which the vibration acceleration in the first direction and the vibration acceleration in the second direction are calculated based on the first phase difference and the first signal.
- FIG. 6 shows a state in which the unit housing 11 is tilted due to vibration from the detection target, but this is a diagram that instantaneously represents the state of the sensor unit 100 in which vibration is propagating. Therefore, in FIG. 6, the first direction is the Z direction, which is the vertical direction on the paper surface, and the second direction is the X direction, which is the horizontal direction on the paper surface. In FIG. 6, the direction in which the first vibration sensors 12a and 12b detect vibration when the unit housing 11 is tilted is indicated as Z ′.
- the vibration acceleration detected by the first vibration sensors 12a and 12b is indicated by an arrow ⁇ .
- the relationship between the vibration acceleration ⁇ and the vibration acceleration ⁇ in the first direction and the vibration acceleration ⁇ in the second direction, which are separated from the vibration acceleration ⁇ is expressed by the following equations 2 and 3.
- ⁇ represents the first phase difference calculated in S106.
- the acceleration spectrum 503 in the first direction and the acceleration spectrum 504 in the second direction are obtained by Fourier transforming the time waveforms indicated by the vibration acceleration ⁇ in the first direction and the vibration acceleration ⁇ in the second direction to respective frequencies. Can be sought.
- the two first vibration sensors 12a and 12b which are aligned in parallel so as to detect vibrations in the same direction and are arranged in parallel indicate the vibration acceleration detected from the detection target.
- One signal is generated.
- the first signals generated by the first vibration sensors 12 a and 12 b are transmitted to the information processing apparatus 200.
- a phase difference (first phase difference) is calculated based on the difference between the first signals received by the information processing apparatus 200.
- the vibration acceleration in the first direction and the vibration acceleration in the second direction are calculated. Accordingly, it is possible to detect biaxial vibration using an inexpensive uniaxial vibration sensor, and it is possible to reduce the cost of the sensor unit that detects the deterioration of the detected object by vibration. As a result, the cost of the vibration detection system can be reduced.
- the height of the unit housing 11 can be suppressed as compared with the case where the vibration sensor is arranged vertically as in Patent Document 3, and the sensor unit 100 can be mounted. It can be made smaller.
- vibration detection system 1 described the example provided with the sensor unit 100 and the information processing apparatus 200 as separate apparatuses, one apparatus (sensor apparatus) which has each process part shown in FIG. It is good also as a structure provided with. Even in this case, the same effect as the above-described vibration detection system 1 can be obtained.
- the sensor unit 100 may include each processing unit of the information processing apparatus 200. By doing in this way, even if it does not transmit a several 1st signal to the information processing apparatus 200 via the transmission part 102, the effect similar to the vibration detection system 1 mentioned above can be acquired only with the sensor unit 100. .
- FIG. 9 is a diagram illustrating a configuration example of the vibration detection system 1 according to the second embodiment.
- the sensor unit 100 according to this embodiment further includes a plurality of second vibration sensors 21 included in the second sensor group 22.
- the transmission unit 110 further acquires a plurality of second signals indicating vibration accelerations detected by the plurality of second vibration sensors included in the second sensor group, and transmits the second signals to the information processing apparatus 200.
- the receiving unit 210 further receives a plurality of second signals generated for each second vibration sensor 21 included in the second sensor group 22.
- the phase difference calculation unit 220 calculates a second phase difference indicating the phase difference between the plurality of second signals based on the plurality of second signals.
- the acceleration calculation unit 230 calculates vibration acceleration in the first direction and vibration acceleration in a third direction different from the first direction and the second direction based on the second phase difference and each second signal.
- FIG. 10 is a diagram illustrating a device configuration example of the sensor unit 100 according to the second embodiment.
- FIG. 10A is a perspective view of the sensor unit 100
- FIG. 10B is a cross-sectional view of the sensor unit 100 along the AA ′ plane.
- the sensor unit 100 according to the present embodiment includes second vibration sensors 21 a and 21 b as a second sensor group 22 in addition to the first embodiment.
- the second vibration sensors 21 a and 21 b are aligned in the same direction as the first vibration sensors 12 a and 12 b included in the first sensor group 13.
- the second vibration sensors 21a and 21b are arranged in a direction different from the direction in which the first vibration sensors 12a and 12b are arranged when the surface in which the first vibration sensors 12a and 12b are arranged is viewed from the vertical direction. Has been placed. Thereby, the acceleration calculation unit 230 can calculate the vibration acceleration in the third direction in the same manner as in the first sensor group 13.
- the 2nd sensor group 22 of this embodiment has the two 2nd vibration sensors 21, you may have the 3 or more 2nd vibration sensors 21.
- the directions of the second vibration sensors 21 are aligned and arranged in parallel. FIG.
- first vibration sensors 12a and 12b and the second vibration sensors 21a and 21b are arranged so as to overlap each other, but the first vibration sensors 12a and 12b and the second vibration sensors
- the positional relationship with the vibration sensors 21a and 21b is not limited to this.
- the first vibration sensors 12a and 12b and the second vibration sensors 21a and 21b may be arranged on the same plane.
- the second sensor group 22 is arranged by changing the orientation of the first sensor group 13, and the processing flow related to the second sensor group 22 is the same as that of the first embodiment. The description is omitted.
- the information processing apparatus 200 receives a plurality of second signals indicating vibration accelerations detected by the second vibration sensors 21 a and 21 b included in the second sensor group 22. Then, the information processing apparatus 200 calculates a phase difference (second phase difference) based on the difference between the second signals. And the vibration acceleration of a 3rd direction is further computable by substituting the calculated 2nd phase difference for (theta) of said Formula 2.
- the direction in which the first vibration sensors 12 a and 12 b are arranged and the second vibration sensors 21 a and 21 b are arranged when the surface in which the first vibration sensors 12 a and 12 b are arranged is viewed from the vertical direction.
- the directions are orthogonal, the calculated first direction, second direction, and third direction are orthogonal to each other.
- the vibration acceleration in the third direction is further calculated in addition to the vibration acceleration in the first direction and the second direction. Accordingly, it is possible to construct a vibration detection system that can detect the vibration in the three-axis direction by using an inexpensive one-axis vibration sensor without using an expensive three-axis sensor.
- the height of the unit housing 11 can be suppressed as compared with the case where the vibration sensor is arranged vertically as in Patent Document 3, and the sensor unit 100 is arranged. It can be made smaller.
- the above-described effects can also be obtained as a single sensor device having both the sensor unit 100 and the information processing device 200. Further, as described in the first embodiment, when the sensor unit 100 includes each processing unit of the information processing apparatus 200, the above-described effects can be obtained only by the sensor unit 100.
- FIG. 11 is a diagram illustrating an example of a water leakage detection system using the sensor unit 100 and the information processing apparatus 200 of the present invention.
- the sensor unit 100 detects the vibration from the water pipe and transmits each signal indicating the vibration acceleration of the vibration to the information processing apparatus 200.
- the information processing apparatus 200 calculates the vibration acceleration in each direction based on the first signal and the second signal indicating the vibration detected by the sensor unit 100. Then, based on the vibration acceleration in each direction calculated by the information processing apparatus 200, it is determined whether or not the vibration generated in the water pipe is due to water leakage.
- a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection object are arranged in a uniform direction;
- a first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- a phase difference calculation unit for calculating Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating A sensor device. 2.
- the first direction is a direction perpendicular to a propagation direction of vibration generated in the detected object
- the second direction is a direction parallel to the propagation direction.
- the sensor device according to 1. 3.
- a plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction.
- the phase difference calculator is A second phase difference indicating a phase difference between the plurality of second signals based on a plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group.
- the acceleration calculation unit Based on the second phase difference and the plurality of second signals, vibration acceleration in a third direction different from the first direction and the second direction is further calculated.
- the vibration sensor is a piezoelectric vibration sensor. 1. To 4.
- the detected object is a water pipe, 1. To 5.
- a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection target include a sensor unit having a first sensor group arranged in a uniform direction, and an information processing device.
- the sensor unit is A transmitter that transmits a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- the information processing apparatus includes: A receiver for receiving the plurality of first signals; A phase difference calculating unit that calculates a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating A vibration detection system 8).
- the first direction is a direction perpendicular to a propagation direction of vibration generated in the detected object
- the second direction is a direction parallel to the propagation direction. 7).
- the sensor unit is A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction.
- the transmitter is A plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group;
- the receiver is Further receiving the plurality of second signals;
- the phase difference calculator is Further calculating a second phase difference indicating a phase difference between the plurality of second signals based on the plurality of second signals;
- the acceleration calculation unit Based on the second phase difference and the plurality of second signals, vibration acceleration in a third direction different from the first direction and the second direction is further calculated. 7).
- the vibration detection system described in 1. 10. When the surface is viewed from the vertical direction, the direction in which the plurality of first vibration sensors are arranged and the direction in which the second vibration sensors are arranged are orthogonal to each other. 9.
- the vibration sensor is a piezoelectric vibration sensor. 7).
- the vibration detection system according to any one of the above. 12 The detected object is a water pipe, 7).
- the vibration detection system according to any one of the above. 13. A first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to the detection object are arranged in a uniform direction;
- a sensor unit. 14 The sensor unit is When the plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are viewed from the vertical direction, the plurality of first vibration sensors.
- a second sensor group arranged side by side in a direction different from the direction in which the The transmitter is A plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group; 13.
- the vibration sensor is a piezoelectric vibration sensor. 13. To 15. The sensor unit according to any one of the above. 17.
- the detected object is a water pipe, 13. To 16.
- a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detection object is an information processing apparatus that communicates with a sensor unit having a first sensor group that is arranged in the same direction.
- a receiving unit that receives a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- a phase difference calculating unit that calculates a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- An acceleration calculation unit for calculating An information processing apparatus. 19.
- the sensor unit is A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction. Further comprising a second sensor group disposed; The receiver is Further receiving a plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group; The phase difference calculator is Further calculating a second phase difference indicating a phase difference between the plurality of second signals based on the plurality of second signals; The acceleration calculation unit Based on the second phase difference and the plurality of second signals, vibration acceleration in a third direction different from the first direction and the second direction is further calculated. 18. The information processing apparatus described in 1. 20.
- a sensor device having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detected object are arranged in a uniform direction.
- a first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- a vibration detection method including the above. 21.
- the first direction is a direction perpendicular to a propagation direction of vibration generated in the detected object
- the second direction is a direction parallel to the propagation direction.
- the sensor device includes: A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction. Further comprising a second sensor group disposed;
- the sensor device is A second phase difference indicating a phase difference between the plurality of second signals based on a plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group.
- the acceleration calculation unit Based on the second phase difference and the plurality of second signals, vibration acceleration in a third direction different from the first direction and the second direction is further calculated. Including. Or 21.
- the vibration sensor is a piezoelectric vibration sensor. 20. To 23. The vibration detection method according to any one of the above. 25.
- the detected object is a water pipe, 20. To 24.
- Vibration detection realized by a sensor unit having a first sensor group in which a plurality of first vibration sensors for detecting vibration acceleration in one direction with respect to a detection target are arranged in the same direction, and an information processing apparatus A method,
- the sensor unit is Transmitting a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- the information processing apparatus is Receiving the plurality of first signals; Calculating a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used.
- the first direction is a direction perpendicular to a propagation direction of vibration generated in the detected object
- the second direction is a direction parallel to the propagation direction.
- the sensor unit is A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction.
- the sensor unit is A plurality of second signals indicating vibration acceleration detected by each of the plurality of second vibration sensors included in the second sensor group;
- the information processing apparatus is Further receiving the plurality of second signals; Further calculating a second phase difference indicating a phase difference between the plurality of second signals based on the plurality of second signals; Based on the second phase difference and the plurality of second signals, vibration acceleration in a third direction different from the first direction and the second direction is further calculated.
- 26 including. Or 27.
- the vibration detection method described in 1. 29 When the surface is viewed from the vertical direction, the direction in which the plurality of first vibration sensors are arranged and the direction in which the second vibration sensors are arranged are orthogonal to each other. 28.
- the vibration sensor is a piezoelectric vibration sensor. 26 including. To 29.
- the detected object is a water pipe, 26 including. To 30.
- the vibration detection method according to any one of the above. 32. A sensor device having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detection target are arranged in a uniform direction, A first phase difference indicating a phase difference between the plurality of first signals based on a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group.
- a phase difference calculation function for calculating Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used. Acceleration calculation function to calculate A program that realizes 33.
- the sensor device includes: A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction.
- a function for further calculating A function of further calculating vibration acceleration in a third direction different from the first direction and the second direction based on the second phase difference and the plurality of second signals; 32 is realized.
- the program described in. 34 A program for operating an information processing apparatus that communicates with a sensor unit having a first sensor group in which a plurality of first vibration sensors that detect vibration acceleration in one direction with respect to a detected object are aligned.
- a receiving function for receiving a plurality of first signals indicating vibration acceleration detected by each of the plurality of first vibration sensors included in the first sensor group;
- a phase difference calculation function for calculating a first phase difference indicating a phase difference between the plurality of first signals based on the plurality of first signals; Using the first phase difference and the plurality of first signals, the vibration acceleration in the first direction perpendicular to the plane in which the plurality of first vibration sensors are arranged and the vibration acceleration in the second direction parallel to the plane are used. Acceleration calculation function to calculate A program that realizes 35.
- the sensor unit is A plurality of second vibration sensors that detect vibration acceleration in one direction with respect to the detected object are arranged in a direction different from the direction in which the plurality of first vibration sensors are arranged when the surface is viewed from the vertical direction. And further comprising a second sensor group arranged,
- a function of further calculating vibration acceleration in a third direction different from the first direction and the second direction based on the second phase difference and the plurality of second signals; 34 is realized.
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Abstract
Description
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有するセンサ装置が提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置を備え、
前記センサユニットは、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信する送信部を有し、
前記情報処理装置は、
前記複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する振動検知システムが提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を外部に送信する送信部と、
を有するセンサユニットが提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置であって、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する情報処理装置が提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置が、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法が提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置とにより実現される振動検知方法であって、
前記センサユニットが、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信し、
前記情報処理装置が、
前記複数の第1信号を受信し、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法が提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラムが提供される。
被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置を動作させるプログラムであって、
前記情報処理装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信機能と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラムが提供される。
図1は、第1実施形態に係る振動検知システム1の構成例を示す図である。振動検知システム1は、センサユニット100と情報処理装置200とを備える。
本実施形態は、以下の点を除いて、第1実施形態と同様である。
1. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有するセンサ装置。
2. 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
1.に記載のセンサ装置。
3. 前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記位相差算出部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
1.又は2.に記載のセンサ装置。
4. 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
3.に記載のセンサ装置。
5. 前記振動センサは圧電式振動センサである、
1.から4.のいずれか1つに記載のセンサ装置。
6. 前記被検知体は水道配管である、
1.から5.のいずれか1つに記載のセンサ装置。
7. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置とを備え、
前記センサユニットは、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信する送信部を有し、
前記情報処理装置は、
前記複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する振動検知システム。
8. 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
7.に記載の振動検知システム。
9. 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記送信部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に送信し、
前記受信部は、
前記複数の第2信号を更に受信し、
前記位相差算出部は、
前記複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
7.又は8.に記載の振動検知システム。
10. 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
9.に記載の振動検知システム。
11. 前記振動センサは圧電式振動センサである、
7.から10.のいずれか1つに記載の振動検知システム。
12. 前記被検知体は水道配管である、
7.から11.のいずれか1つに記載の振動検知システム。
13. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を外部に送信する送信部と、
を有するセンサユニット。
14. 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記複数の第1の振動センサが並ぶ面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記送信部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に送信する、
13.に記載のセンサユニット。
15. 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
14.に記載のセンサユニット。
16. 前記振動センサは圧電式振動センサである、
13.から15.のいずれか1つに記載のセンサユニット。
17. 前記被検知体は水道配管である、
13.から16.のいずれか1つに記載のセンサユニット。
18. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置であって、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する情報処理装置。
19. 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記受信部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に受信し、
前記位相差算出部は、
前記複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
18.に記載の情報処理装置。
20. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置が、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法。
21. 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
20.に記載の振動検知方法。
22. 前記センサ装置は、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記センサ装置が、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
ことを含む20.又は21.に記載の振動検知方法。
23. 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
22.に記載の振動検知方法。
24. 前記振動センサは圧電式振動センサである、
20.から23.のいずれか1項に振動検知方法。
25. 前記被検知体は水道配管である、
20.から24.のいずれか1項に記載の振動検知方法。
26. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置とにより実現される振動検知方法であって、
前記センサユニットが、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信し、
前記情報処理装置が、
前記複数の第1信号を受信し、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法。
27. 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
26.に記載の振動検知方法。
28. 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記センサユニットが、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に送信し、
前記情報処理装置が、
前記複数の第2信号を更に受信し、
前記複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
ことを含む26.又は27.に記載の振動検知方法。
29. 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
28.に記載の振動検知方法。
30. 前記振動センサは圧電式振動センサである、
ことを含む26.から29.のいずれか1つに記載の振動検知方法。
31. 前記被検知体は水道配管である、
ことを含む26.から30.のいずれか1つに記載の振動検知方法。
32. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラム。
33. 前記センサ装置は、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記センサ装置に、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出する機能と、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する機能と、
を実現させる32.に記載のプログラム。
34. 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置を動作させるプログラムであって、
前記情報処理装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信機能と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラム。
35. 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有しており、
前記情報処理装置に、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に受信する機能と、
前記複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出する機能と、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する機能と、
を実現させる34.に記載のプログラム。
Claims (18)
- 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有するセンサ装置。 - 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
請求項1に記載のセンサ装置。 - 前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記位相差算出部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
請求項1又は2に記載のセンサ装置。 - 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
請求項3に記載のセンサ装置。 - 前記振動センサは圧電式振動センサである、
請求項1から4のいずれか1項に記載のセンサ装置。 - 前記被検知体は水道配管である、
請求項1から5のいずれか1項に記載のセンサ装置。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置とを備え、
前記センサユニットは、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信する送信部を有し、
前記情報処理装置は、
前記複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する振動検知システム。 - 前記第1方向は、前記被検知体に生じる振動の伝播方向に垂直な方向であり、
前記第2方向は、前記伝播方向に平行な方向である、
請求項7に記載の振動検知システム。 - 前記センサユニットは、
前記被検知体に対する1つの方向の振動加速度を検知する複数の第2の振動センサが、前記面を垂直方向から見た場合に前記複数の第1の振動センサが並ぶ方向と異なる方向に並んで配置されている第2センサグループを更に有し、
前記送信部は、
前記第2センサグループに含まれる前記複数の第2の振動センサのそれぞれが検出した振動加速度を示す、複数の第2信号を更に送信し、
前記受信部は、
前記複数の第2信号を更に受信し、
前記位相差算出部は、
前記複数の第2信号に基づいて、前記複数の第2信号の位相差を示す第2位相差を更に算出し、
前記加速度算出部は、
前記第2位相差及び前記複数の第2信号に基づいて、前記第1方向及び前記第2方向とは異なる第3方向の振動加速度を更に算出する、
請求項7又は8に記載の振動検知システム。 - 前記面を垂直方向から見た場合に、前記複数の第1の振動センサが並ぶ方向と、前記第2の振動センサが並ぶ方向とが互いに直交する、
請求項9に記載の振動検知システム。 - 前記振動センサは圧電式振動センサである、
請求項7から10のいずれか1項に記載の振動検知システム。 - 前記被検知体は水道配管である、
請求項7から11のいずれか1項に記載の振動検知システム。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループと、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を外部に送信する送信部と、
を有するセンサユニット。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置であって、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信部と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出部と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出部と、
を有する情報処理装置。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置が、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと、情報処理装置とにより実現される振動検知方法であって、
前記センサユニットが、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を送信し、
前記情報処理装置が、
前記複数の第1信号を受信し、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出し、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する、
ことを含む振動検知方法。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサ装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラム。 - 被検知体に対する1つの方向の振動加速度を検知する複数の第1の振動センサが、向きを揃えて配置されている第1センサグループを有するセンサユニットと通信する情報処理装置を動作させるプログラムであって、
前記情報処理装置に、
前記第1センサグループに含まれる前記複数の第1の振動センサのそれぞれが検出した振動加速度を示す、複数の第1信号を受信する受信機能と、
前記複数の第1信号に基づいて、前記複数の第1信号の位相差を示す第1位相差を算出する位相差算出機能と、
前記複数の第1の振動センサが並ぶ面に垂直な第1方向の振動加速度と、前記面に平行な第2方向の振動加速度とを、前記第1位相差及び前記複数の第1信号を用いて算出する加速度算出機能と、
を実現させるプログラム。
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KR20180065662A (ko) * | 2016-12-08 | 2018-06-18 | 한전케이디엔주식회사 | 진동 감지 장치 |
KR101961827B1 (ko) * | 2016-12-08 | 2019-03-25 | 한전케이디엔주식회사 | 진동 감지 장치 |
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US9921097B2 (en) | 2018-03-20 |
JPWO2014051030A1 (ja) | 2016-08-22 |
US20150226604A1 (en) | 2015-08-13 |
EP2902753A4 (en) | 2016-05-25 |
EP2902753A1 (en) | 2015-08-05 |
JP6248936B2 (ja) | 2017-12-20 |
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