WO2020050197A1

WO2020050197A1 - Sensor device

Info

Publication number: WO2020050197A1
Application number: PCT/JP2019/034351
Authority: WO
Inventors: 里見　剛; 敬一粟飯原
Original assignee: ローム株式会社
Priority date: 2018-09-06
Filing date: 2019-09-02
Publication date: 2020-03-12

Abstract

A sensor device (A1) is mounted on a racket in which a striking surface is formed by means of strings (91) stretched lengthwise and crosswise inside a frame. The sensor device (A1) is provided with an attachment portion (1) and a functional portion (2). The attachment portion (1) is supported by the strings (91). The functional portion (2) is supported by the attachment portion (1), and includes a sensor element for detecting vibrations.

Description

Sensor device

The present disclosure relates to a sensor device, and more particularly, to a sensor device used by being mounted on a sports racket.

Conventionally, there is known a technique of detecting a movement of a racket by mounting a sensor device including an acceleration sensor or the like on a sports racket (for example, see Patent Document 1). The sensor device described in the document is mounted on a tennis racket, and includes a sensor such as an acceleration sensor and a base member supporting the sensor. The base member is attached to a racket frame (particularly near the grip) or a grip end via an attachment member. By using the sensor device having the above configuration, it is possible to detect the movement of the racket.

In the above conventional sensor device, while the movement of the frame (especially near the grip) and the grip end can be grasped, for example, what kind of swing trajectory is, or how the ball collides with the racket when hitting the ball during play However, it was not enough to obtain more detailed information, such as how it rebounded.

Japanese Patent No. 6260616

The present disclosure has been devised in view of the above circumstances, and is suitable for acquiring more detailed information and the like when hitting a ball or the like in a sensor device mounted on a sports racket. A main object is to provide a sensor device.

A sensor device provided by the present disclosure is a sensor device mounted on a racket in which a hitting surface is formed by a string stretched vertically and horizontally inside a frame, wherein the mounting portion is supported by the string; And a functional unit including a sensor element for detecting vibration.

Other features and advantages of the present disclosure will become more apparent from the detailed description given below with reference to the accompanying drawings.

1 shows a first embodiment of a sensor device according to the present disclosure, and shows a state where the sensor device is attached to a string of a tennis racket. It is the elements on larger scale of FIG. FIG. 3 is an enlarged cross-sectional view along the line III-III in FIG. 2. FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 2. It is an expanded sectional view of a sensor part. FIG. 3 is a block diagram illustrating a configuration of a sensor device. FIG. 4 is a cross-sectional view illustrating a modified example of the sensor device illustrated in FIG. 3. FIG. 8 is a view of the substrate in the sensor device shown in FIG. 7 as viewed from the back surface side. FIG. 6 is a cross-sectional view illustrating a second embodiment of the sensor device according to the present disclosure. 9 shows a third embodiment of the sensor device according to the present disclosure, and shows a state where the sensor device is attached to a string of a tennis racket. FIG. 11 is an enlarged sectional view taken along line XI-XI in FIG. 14 shows a fourth embodiment of the sensor device according to the present disclosure, and shows a state where the sensor device is mounted on a string of a tennis racket. FIG. 13 is a sectional view taken along the line XIII-XIII of FIG. 14 shows a fourth embodiment of the sensor device according to the present disclosure, and shows a state where the sensor device is mounted on a string of a tennis racket. FIG. 15 is a sectional view taken along the line XV-XV in FIG. 14.

Hereinafter, preferred embodiments of the present disclosure will be specifically described with reference to the drawings.

FIGS. 1 to 5 show a first embodiment of a sensor device according to the present disclosure. As shown in FIG. 1, the sensor device A1 of the present embodiment is mounted on a string 91 of a tennis racket 9, for example. Note that the tennis racket 9 has a string 91, a grip 92, and a frame 93. The string 91 is stretched vertically and horizontally inside the frame 93. The striking surface for hitting the ball is formed by the string 91 stretched in the vertical and horizontal directions. The string 91 is composed of, for example, one or a plurality of string members, and each linear portion extending in the vertical direction and the horizontal direction is supported by the frame 93 with a predetermined tensile force. In the present embodiment, each of the linear portions extending in the horizontal direction (direction x) of the string 91 is appropriately referred to as “horizontal string 91x”, and each of the linear portions extending in the vertical direction (direction y) is appropriately referred to as “vertical string”. 91y ". It should be noted that the above-mentioned “string” may be called “gut” by focusing on, for example, a difference in material. In the present embodiment, such “string” and “gut” are not collectively referred to as “string”.

センサ As shown in FIG. 3, the sensor device A1 of the present embodiment includes a mounting portion 1 and a functional portion 2. The attachment section 1 is for attaching the sensor device A1 to the string 91. The mounting section 1 accommodates and supports the functional section 2 and is supported by the string 91. As shown in FIGS. 3 and 4, the mounting portion 1 includes a holding portion 11. The sandwiching portion 11 is a portion that sandwiches the string 91 at two or more places separated from each other. In the present embodiment, the holding portion 11 holds the string 91 from a direction perpendicular to the hitting surface (direction z). Further, in the present embodiment, the holding portion 11 is formed in a substantially annular shape with a groove shape facing outward in a cross-section as a whole, and includes one holding portion 11x for holding the horizontal string 91x shown in FIG. 4 and two holding portions 11y sandwiching the vertical string 91y shown in FIG. Also, as is clear from FIGS. 2 and 4, the two holding portions 11y sandwich the adjacent vertical string 91y.

The mounting portion 1 is made of a material having flexibility and elasticity. Examples of a material forming the mounting portion 1 include silicone rubber and an elastomer resin. The attachment portion 1 is detachably attached to the string 91 by being elastically deformed. As shown in FIGS. 1 and 2, when the sensor device A <b> 1 is mounted, the mounting portion 1 is separated from the frame 93 and is supported by the string 91 without contacting the frame 93.

The function unit 2 detects the vibration generated in the string 91 and processes the detected data. The function unit 2 includes, for example, a substrate 21, a sensor unit 22, a control unit 23, a power supply unit 24, and a storage unit 25.

The substrate 21 is a wiring substrate in which a predetermined wiring pattern (not shown) is formed on an insulating base made of, for example, glass epoxy resin. The substrate 21 has a rectangular shape when viewed in the thickness direction. As an example of the dimensions of the substrate 21, the long side is about 5 to 20 mm, the short side is about 3 to 10 mm, and the thickness is about 0.2 to 1.6 mm.

The sensor unit 22 is a sensor for detecting vibration, and is mounted on one surface 21a of the substrate 21. As illustrated in FIG. 5, the sensor unit 22 includes a sensor substrate 221, a sensor element 222, an electronic element 223, and a sealing resin 224.

The sensor element 222 is mounted on the sensor substrate 221 via the electronic element 223, and detects acceleration and vibration transmitted from the string 91. The sensor element 222 includes, for example, an acceleration sensor such as a three-axis acceleration sensor (MEMS sensor), an angular velocity sensor such as a three-axis gyro sensor (MEMS sensor), or a geomagnetic sensor.

The electronic element 223 is a so-called driver element of the sensor element 222, and performs, for example, correction of data detected by the sensor element 222. An example of such an electronic device 223 is, for example, an integrated circuit device, and specifically, a so-called ASIC (Application / Specific / Integrated / Circuit) device.

複数 A plurality of surface mounting terminals 225 are provided on the back surface of the sensor substrate 221 (the surface opposite to the mounting surface of the electronic element 223). The sensor element 222, the electronic element 223, and the terminal 225 are appropriately conductively connected through, for example, a bonding wire or a wiring pattern or a through-hole (not shown) provided on the sensor substrate 221.

The sealing resin 224 covers a part of the sensor substrate 221, the sensor element 222, and the electronic element 223, and is, for example, a black resin. Note that the sealing resin 224 exposes the mounting surface of the terminal 225.

The sensor unit 22 having the above configuration is a rectangular parallelepiped chip-type component. As an example of the dimensions of the sensor unit 22 (chip type component), the dimensions of the sensor substrate 221 when viewed in the thickness direction are approximately square with a side of about 1 to 5 mm, and the dimensions of the sensor substrate 221 in the thickness direction are 0.3. It is about 2.0 mm.

センサ As shown in FIG. 3, in the present embodiment, the sensor section 22 is covered with a protective cover 26. The protection cover 26 is made of, for example, a hard resin material. The inside of the protective cover 26 is filled with a filler 27. The filler 27 is made of, for example, a soft resin material. Note that the inside of the protective cover 26 may be hollow.

The control unit 23 is mounted on the surface 21a of the substrate 21, and processes data detected by the sensor unit 22 (sensor element 222). The control unit 23 includes, for example, an MCU (Micro Control Unit). The control unit 23 analyzes data detected by the sensor unit 22 and generates analysis data on vibration.

(4) The power supply unit 24 supplies power to the control unit 23. The power supply unit 24 is mounted on the other surface 21b of the substrate 21, and is composed of, for example, a coin-type battery or a thin lithium-ion battery.

The storage unit 25 stores the analysis data generated by the control unit 23. The storage unit 25 is mounted on the other surface 21b of the substrate 21, and is, for example, a nonvolatile memory such as an EEPROM.

において In the present embodiment, the functional unit 2 is housed in the outer case 3. The outer case 3 is made of, for example, a hard resin material, and the outer case 3 is held by the mounting portion 1. In the present embodiment, for example, as shown in FIGS. 3 and 4, the substrate 21 of the functional unit 2 is supported by the outer case 3. Therefore, the functional part 2 is supported by the mounting part 1 via the outer case 3.

In the present embodiment, the sensor device A1 includes the input / output unit 4. The input / output unit 4 is an interface for taking out data on vibration obtained by the function unit 2 (control unit 23) to the outside. In the present embodiment, the analysis data once stored in the storage unit 25 can be taken out to the outside via the input / output unit 4. The outer case 3 is provided with a connector 5 for connecting to an external device. The connector 5 is connected to the input / output unit 4 and is, for example, a USB connection terminal.

In the present embodiment, a recess 12 is formed on the periphery of the connector 5 in the mounting portion 1. The cover member 6 is attached to the recess 12, and the cover member 6 covers the connector 5. By removing the lid member 6 when necessary, the connector 5 can be used and input / output with the outside is possible.

FIG. 6 is a block diagram showing a configuration of the sensor device A1. The control unit 23 uses the detection data detected by the sensor unit 22 (the sensor element 222) to analyze, for example, the movement of the tennis racket 9 and the collision or rebound between the tennis racket 9 and the ball, and generates analysis data. Further, the control unit 23 controls the entire sensor device A1 including the power supply unit 24 and the storage unit 25. The power supply unit 24 supplies power to the control unit 23 and other elements based on an instruction from the control unit 23. The storage unit 25 stores the above-described analysis data and the like. The analysis data stored in the storage unit 25 is extracted to the outside via the input / output unit 4 and the connector 5 based on an instruction from the control unit 23. When the power supply unit 24 is a rechargeable battery, the power supply unit 24 may be charged with electric power supplied from the outside via the connector 5.

Next, the operation of the present embodiment will be described.

The sensor device A1 is mounted on the string 91 of the tennis racket 9. Specifically, the attachment portion 1 is supported by the string 91, and the sensor portion 22 (the sensor element 222) is supported by the attachment portion 1. According to such a configuration, for example, in addition to vibration and acceleration caused by the entire tennis racket 9 being moved by a series of swings, for example, due to the collision or rebound of the ball when hitting the ball during tennis play As a result, the vibration generated in the string 91 is transmitted to the sensor element 222 via the mounting portion 1. Therefore, according to the present embodiment, it is possible to detect the vibration generated in the string 91 when the tennis racket 9 hits a ball.

According to the sensor device A1, various information can be obtained by analyzing the data detected by the sensor unit 22 (sensor element 222). For example, during tennis play, vibration and acceleration detected by the sensor unit 22 (sensor element 222) include a low-frequency component generated by a series of swing motions and a high-frequency component generated by the string 91 when a ball is hit. And are included.

By extracting data in a low frequency range within a predetermined range from the detected vibration data and performing analysis processing, it is possible to specify and classify the movement of the entire tennis racket 9. For example, the type of shot (forehand stroke, backhand stroke) Hand stroke, volley, smash, service, etc.). Further, it is possible to grasp the swing trajectory (for example, whether the racket head is not lowered or the takeback is not too large, etc.) based on the data in the low frequency range.

On the other hand, by extracting data in a high frequency range within a predetermined range from the detected vibration data and performing analysis processing, a more detailed state such as a collision or rebound between the ball and the tennis racket 9 (string 91) can be grasped. Can be. By such an analysis, for example, a ball muscle (flat, spin, slice, or the like) can be determined. Further, it is possible to grasp the impact position and the impact force based on the data in the high frequency range. Regarding the impact position, it is possible to grasp how far away from the sweet spot is. Such analysis based on the data in the high frequency range can be realized by detecting a vibration generated in the string 91 when the ball is hit by the sensor device A1 attached to the string 91.

Furthermore, a natural frequency corresponding to the tension of the string 91 can be obtained from, for example, vibration data when the ball is hit. By monitoring the natural frequency of the string 91 over time or comparing it with a predetermined threshold value, the looseness or breakage of the string 91 can be determined. Further, by accumulating and totalizing the analysis data for each swing, it is possible to obtain information such as the ratio of each shot and the ratio of the ball muscle to the total number of hits.

In addition, if the movement of the entire tennis racket 9 can be specified and classified as described above, for example, when the tennis racket 9 is swung a predetermined number of times by a player in a predetermined direction, a series of analysis processing by the sensor device A1 is performed. Control to start or stop is also possible.

The sensor device A1 is separated from the frame 93 when the sensor device A1 is mounted on the tennis racket 9. According to such a configuration, it is possible to more accurately detect the vibration generated in the string 91 when hitting a ball, without being affected by the vibration attenuation in the frame 93.

In the present embodiment, the sensor units 22 (sensor elements 222) extend in the same direction (vertical direction or horizontal direction) and are arranged between adjacent strings 91. More specifically, the sensor section 22 (sensor element 222) extends in the vertical direction and is arranged between the adjacent vertical strings 91y. According to such a configuration, it is possible to acquire the vibration around the racket.

FIG. 7 shows a modification of the sensor device according to the present disclosure. The sensor device A1 'of the present modified example is different from the above-described sensor device A1 in the configuration of the input / output unit 4 and does not include the connector 5. Other configurations of the sensor device A1 'are substantially the same as those of the above-described sensor device A1. In the drawings after FIG. 7, the same or similar elements as those in the above-described embodiment are denoted by the same reference numerals as those in the above-described embodiment, and the description thereof will not be repeated.

In the present modification, the input / output unit 4 wirelessly transmits data (analysis data and the like) obtained by the control unit 23 (functional unit 2) to an external device. As shown in FIG. 8, the input / output unit 4 is provided on the other surface 21b of the substrate 21, and has, for example, a wireless IC chip 41 and an antenna 42. The communication method of the wireless communication is not particularly limited, and examples thereof include a communication method based on Bluetooth (registered trademark) and NFC (Near Field Communication).

センサ The sensor device A1 ′ of the present modification can also provide the same operational effects as those described with respect to the sensor device A1.

In addition, in this modification, by using wireless communication, it is possible to easily extract analysis data and the like from the control unit 23 (functional unit 2) to the outside. For example, in a state where the sensor device A1 'is attached to the tennis racket 9, analysis data and the like can be taken out.

FIG. 9 illustrates a second embodiment of the sensor device according to the present disclosure. The sensor device A2 of the present embodiment is different from the sensor device A1 of the above embodiment in the configuration of the power supply unit 24.

において In the sensor device A2, the power supply unit 24 includes a piezoelectric element 241 and a power storage element 242. The piezoelectric element 241 is provided, for example, in the vicinity of the holding section 11 in the mounting section 1, and generates power by transmitting vibration generated in the string 91. The power storage element 242 stores power generated by the piezoelectric element 241 and is, for example, a capacitor. In FIG. 9, the illustration of the outer case 3, the input / output unit 4, and the connector 5 is omitted.

センサ The sensor device A2 of the present embodiment can also provide the same functions and effects as described with respect to the sensor device A1 of the above embodiment.

According to the configuration of the power supply unit 24 of the present embodiment, the vibration generated in the string 91 is transmitted to the piezoelectric element 241 to generate power, and is stored in the power storage element 242. According to such a configuration, the sensor device A2 can be operated by the electric power stored in the power storage element 242, and operates independently without a battery.

FIGS. 10 and 11 show a third embodiment of the sensor device according to the present disclosure. The sensor device A3 of the present embodiment includes the housing portion 7, and this point is significantly different from the sensor device A1 of the above embodiment.

収容 In the sensor device A3, the housing section 7 houses the outer case 3 and the functional section 2. The housing 7 is made of, for example, a resin material and has an elliptical column shape. An elliptical through-hole 13 corresponding to the accommodation portion 7 is formed in the attachment portion 1. The inner diameter of the through hole 13 when the mounting portion 1 is in a natural state is slightly smaller than the outer diameter of the housing portion 7, and the housing portion 7 is pressed into the through hole 13. In this way, the accommodation section 7 is detachably attached to the attachment section 1. In the present embodiment, a protrusion 14 is formed on the inner peripheral surface of the through hole 13 of the mounting portion 1, and a concave groove 71 into which the protrusion 14 fits is formed on the outer peripheral surface of the housing 7. With such a configuration, it is possible to prevent the housing portion 7 from falling off when the tennis racket 9 is shaken.

In the present embodiment, a recess 72 is formed on the periphery of the connector 5 in the housing 7. The cover member 6 is attached to the recess 72, and the cover member 6 covers the connector 5. By removing the lid member 6 when necessary, the connector 5 can be used and input / output with the outside is possible.

センサ The sensor device A3 of the present embodiment can also provide the same operation and effects as those described with respect to the sensor device A1 of the above embodiment.

In addition, in the present embodiment, the accommodation section 7 that accommodates the function section 2 is detachably attached to the attachment section 1. Therefore, the mounting of the housing portion 7 can be selected and used depending on whether the analysis of the vibration is required or not. Further, if the mounting portion 1 and the housing portion 7 are made of materials having different elastic forces from each other, it is possible to adjust the feeling of hit given to the player.

FIGS. 12 and 13 show a sensor device according to a fourth embodiment of the present disclosure. The sensor device A4 according to the present embodiment includes a plurality (two in the present embodiment) of the sensor units 22 (sensor elements 222).

In the sensor device A4, the control unit 23 and the two sensor units 22 (sensor elements 222) are supported by separate substrates 21, and the adjacent substrates 21 are connected by a flexible substrate 28. The substrate 21 supporting the control unit 23 is arranged between a pair of adjacent vertical strings 91y. The two substrates 21 supporting the sensor unit 22 (sensor element 222) are arranged so as to sandwich the substrate 21 supporting the control unit 23 in the direction x. Each substrate 21 supporting the sensor unit 22 (sensor element 222) is disposed between a pair of adjacent vertical strings 91y. Each of the three substrates 21 is arranged between a pair of adjacent vertical strings 91y, but is arranged in the direction x by skipping one between the pair of vertical strings 91y.

The mounting portion 1 has a plurality of (six in this embodiment) holding portions 11 (11y) corresponding to the arrangement of the substrate 21. The two sensor units 22 (sensor elements 222) are arranged on the left and right with the control unit 23 interposed therebetween. Each sensor section 22 (sensor element 222) is arranged between adjacent vertical strings 91y. Note that, in FIG. 13, the illustration of the outer case 3, the input / output unit 4, and the connector 5 is omitted.

センサ The sensor device A4 of the present embodiment can also provide the same operation and effects as those described with respect to the sensor device A1 of the above embodiment.

Also, in the present embodiment, a plurality of sensor units 22 (sensor elements 222) are provided. According to such a configuration, it is possible to acquire a difference in a state of hitting a ball based on detection data detected by the plurality of sensor units 22 (sensor elements 222). From this difference in state, it is possible to grasp, for example, where the hitting surface formed by the string 91 is hitting.

FIGS. 14 and 15 show a sensor device according to a fifth embodiment of the present disclosure. The sensor device A5 according to the present embodiment includes a plurality of (two in the present embodiment) sensor units 22 (sensor elements 222).

In the sensor device A5, the two sensor units 22 (sensor elements 222) are both mounted on one surface 21a of the substrate 21. The two sensor units 22 (sensor elements 222) overlap with different ones of the strings 91 arranged in the horizontal direction (constant direction) when viewed in the vertical direction (direction z) with respect to the hitting surface.

センサ The sensor device A5 of the present embodiment can also provide the same operational effects as those described with respect to the sensor device A1 of the above embodiment.

Also, in the present embodiment, a plurality of sensor units 22 (sensor elements 222) are provided. According to such a configuration, it is possible to acquire a difference in a state of hitting a ball based on detection data detected by the plurality of sensor units 22 (sensor elements 222). From this difference in state, it is possible to grasp, for example, where the hitting surface formed by the string 91 is hitting. Furthermore, in the present embodiment, the plurality of sensor units 22 (sensor elements 222) overlap with different ones of the strings 91 arranged in a certain direction in the vertical direction (direction x) of the hitting surface. According to such a configuration, the vibration generated in the string 91 when the ball is hit is more faithfully detected by the plurality of sensor units 22 (sensor elements 222). Therefore, improvement in the detection accuracy of the sensor device A5 can be expected.

Although the specific embodiments of the present disclosure have been described above, the present disclosure is not limited thereto, and various modifications can be made without departing from the spirit of the invention. The specific configuration of the sensor device according to the present disclosure can be freely changed in various ways. For example, the functional unit may include a microphone (sound detecting unit) for detecting surrounding sounds. In this case, it is also possible to process the data of the sound detected by the microphone in the control unit and analyze the content of the play.

In the above embodiment, the case where the mounting portion and the functional portion are exclusively manufactured has been described as an example. However, the present disclosure is not limited to this. For example, the mounting portion may be mounted using an existing vibration stopper mounted on the string. It may be used as a unit.

In the above embodiment, the case where the sensor device according to the present disclosure is mounted on a tennis racket has been described, but the present disclosure is not limited to this. The sensor device of the present disclosure is applicable to a racket in which strings are stretched vertically and horizontally inside a frame, such as a badminton racket. When the sensor device of the present disclosure is attached to a badminton string, various information can be obtained by detecting vibration generated in the string when hitting the shuttle and performing analysis processing.

The present disclosure includes the following additional configurations.

[Appendix 1]
A sensor device attached to a racket on which a hitting surface is formed by a string stretched vertically and horizontally inside a frame,
A mounting portion supported by the string,
A function unit supported by the mounting unit and including a sensor element for detecting vibration.
[Appendix 2]
The sensor device according to claim 1, wherein the attachment portion is separated from the frame.
[Appendix 3]
2. The sensor device according to claim 1, wherein the attachment portion includes a holding portion that holds the string at at least two or more locations separated from each other.
[Appendix 4]
The functional unit further includes a substrate, the sensor element supported by the substrate, a control unit that processes data detected by the sensor element, and a power supply unit that supplies power to the control unit. 4. The sensor device according to any one of 1 to 3.
[Appendix 5]
The sensor device according to claim 4, wherein the sensor elements extend in the same direction and are arranged between the strings adjacent to each other.
[Appendix 6]
The sensor device according to

claim

4 or 5, wherein the power supply unit includes a piezoelectric element and a power storage element that stores power generated by the piezoelectric element.
[Appendix 7]
7. The sensor device according to any one of supplementary notes 4 to 6, wherein the functional unit includes a storage unit for storing the analysis data generated by the control unit.
[Appendix 8]
The function unit includes a sound detection unit that detects a surrounding sound,
The sensor device according to any one of supplementary notes 4 to 7, wherein the control unit performs processing of data detected by the sound detection unit.
[Appendix 9]
A housing unit for housing the functional unit,
9. The sensor device according to any one of supplementary notes 1 to 8, wherein the housing section is detachably attached to the attachment section.
[Appendix 10]
10. The sensor device according to claim 1, wherein the functional unit includes a plurality of the sensor elements.
[Appendix 11]
The sensor device according to supplementary note 10, wherein the plurality of sensor elements are arranged so as to overlap with any one of the strings arranged in a certain direction that are different from each other when viewed in a vertical direction of the hitting surface.
[Supplementary Note 12]
The sensor device according to any one of supplementary notes 1 to 11, further comprising a data output unit for extracting data related to the vibration obtained by the functional unit to the outside.

Claims

A sensor device attached to a racket on which a hitting surface is formed by a string stretched vertically and horizontally inside a frame,
A mounting portion supported by the string,
A function unit supported by the mounting unit and including a sensor element for detecting vibration.
The sensor device according to claim 1, wherein the attachment portion is separated from the frame.
2. The sensor device according to claim 1, wherein the attachment portion includes a holding portion that holds the string at at least two or more locations separated from each other.
The functional unit includes a substrate, the sensor element supported by the substrate, a control unit that processes data detected by the sensor element, and a power supply unit that supplies power to the control unit. Item 4. The sensor device according to any one of Items 1 to 3.
The sensor device according to claim 4, wherein the sensor elements extend in the same direction and are arranged between the adjacent strings.
6. The sensor device according to claim 4, wherein the power supply unit includes a piezoelectric element and a power storage element that stores power generated by the piezoelectric element. 7.
The sensor device according to any one of claims 4 to 6, wherein the functional unit includes a storage unit for storing the analysis data generated by the control unit.
The function unit includes a sound detection unit that detects a surrounding sound,
The sensor device according to any one of claims 4 to 7, wherein the control unit processes data detected by the sound detection unit.
A housing unit for housing the functional unit,
The sensor device according to claim 1, wherein the housing portion is detachably attached to the attachment portion.
The sensor device according to any one of claims 1 to 9, wherein the functional unit includes a plurality of the sensor elements.
11. The sensor device according to claim 10, wherein the plurality of sensor elements are arranged so as to overlap any one of the strings arranged in a certain direction that are different from each other when viewed in a vertical direction of the hitting surface. 12.
The sensor device according to any one of claims 1 to 11, further comprising: a data output unit for extracting data relating to the vibration obtained by the functional unit to the outside.