JP7008597B2 - Detection device - Google Patents

Description

The present embodiment relates to a detection device and a vibration detection device.

Conventionally, a device for detecting vibration by a vibration sensor attached to an object to be inspected is known.

Japanese Unexamined Patent Publication No. 2017-322575

It would be beneficial for this type of detector to have a new configuration with less inconvenience.

The detection device of the embodiment includes, for example, a sensor, a plurality of transmitters, a substrate assembly, and a housing. The plurality of transmitters wirelessly transmit signals indicating the detection results of the sensors by different communication methods. A plurality of transmitters are mounted on the board assembly. The housing has a shielding portion made of a material that shields radio waves transmitted from a plurality of transmitting units, and a transmission portion made of a material that transmits radio waves transmitted from the plurality of transmitting units, and has a sensor. , And house the board assembly . The shielding site embraces at least a portion of the substrate assembly and is configured in a cylindrical shape with both ends open, and the permeation site is the side wall, the front and rear walls connected via the side wall, and the side wall, respectively. , A top wall and a bottom wall arranged at both ends of the front wall and the rear wall, and include two permeation sites that sandwich the shielding site so as to cover the open ends on both sides of the shielding site. Each of the plurality of transmitters is covered with two transmission sites on one side, anteriorly, posteriorly, upwardly and downwardly, and is arranged apart from each other.

FIG. 1 is an exemplary and schematic front view of the vibration detection device of the embodiment. FIG. 2 is an exemplary and schematic perspective view of the vibration detection device of the embodiment. FIG. 3 is an exemplary and schematic perspective view of the vibration detection device of the embodiment, and is a view seen in a direction different from that of FIG. 2. FIG. 4 is a sectional view taken along line IV-IV of FIG. FIG. 5 is an exemplary and schematic perspective view of the substrate assembly included in the vibration detection device of the embodiment. FIG. 6 is an exemplary and schematic perspective view of the substrate assembly included in the vibration detection device of the embodiment, and is a view seen in a direction different from that of FIG. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. FIG. 9 is an exemplary and schematic perspective view of the wiring member included in the vibration detection device of the embodiment, and is a view in an extended state not incorporated in the vibration detection device. FIG. 10 is an exemplary and schematic plan view of a part of the wiring member included in the vibration detection device of the embodiment.

Hereinafter, exemplary embodiments of the vibration detection device will be disclosed. The configuration (technical features) of the embodiments shown below is an example.

Further, for convenience, each figure has an arrow indicating a direction. Direction X, direction Y, and direction Z are orthogonal to each other. Further, the direction Di indicates the protruding direction of the protruding portion 13 from the base portion 12, and the direction Dj indicates the thickness direction of the protruding portion 13 (or the circuit board 31). The direction Di and the direction Dj are orthogonal to each other. In the following, for convenience, the direction indicated by each arrow (arrow X, Y, Z, Di, Dj) in each drawing is referred to as the front of the direction (direction X, Y, Z, Di, Dj), and each The direction opposite to the direction indicated by the arrow is referred to as the rear of the direction.

[Embodiment]
1 is a front view of the vibration detection device 10, and FIGS. 2 and 3 are perspective views of the vibration detection device 10. As shown in FIGS. 1 to 3, the vibration detection device 10 includes an attachment 11, a base portion 12, and a protrusion portion 13. The vibration detection device 10 is an example of a detection device.

The attachment 11 has a fixing portion 11a that is fixed in contact with the surface 100a of the inspection object 100. The fixed portion 11a has a contact surface 11b that intersects (for example, is orthogonal to) the direction Z. The contact surface 11b is fixed to the surface 100a, for example, by adhesion or the like, whereby the attachment 11 and thus the vibration detection device 10 are fixed to the inspection object 100. The attachment 11 may also be referred to as a bracket. The contact surface 11b is an example of the first mounting surface.

The base portion 12 is detachably connected to the attachment 11. The base portion 12 projects rearward in the direction X from the rear end of the direction Di of the protruding portion 13. In other words, the protruding portion 13 projects forward in the direction Di from the front end of the base portion 12 in the direction X. The base portion 12 and the protruding portion 13 have a substantially L-shaped or substantially V-shaped shape. The direction Z and the direction Di form an acute angle, and the direction Di is inclined obliquely with respect to the direction Z.

The protrusion 13 has a flat shape having a substantially constant width and a substantially constant thickness. The shape of the protrusion 13 is a flat rectangular parallelepiped shape that intersects the direction Dj and spreads.

The vibration detection device 10 has a front surface 10a, a rear surface 10b, a top surface 10c, a bottom surface 10d, a side surface 10e, a front lower surface 10f, a rear upper surface 10g, and a rear side surface 10h. The front surface 10a is a surface located at the front end of the direction Dj of the protrusion 13 and substantially orthogonal to the direction Dj. The rear surface 10b is a surface located at the rear end of the direction Dj of the protrusion 13 and substantially orthogonal to the direction Dj. The top surface 10c is a surface located at the front end of the direction Di of the protrusion 13 and substantially orthogonal to the direction Di. The bottom surface 10d is a plane located at the rear end of the direction Z of the base portion 12 and substantially orthogonal to the direction Z. The bottom surface 10d is substantially parallel to the surface 100a of the inspection object 100. The side surface 10e is a surface located at the front end and the rear end of the direction Y of the protrusion 13 and substantially orthogonal to the direction Y. The front lower surface 10f is a surface located at the rear end of the direction Di of the protrusion 13 and substantially orthogonal to the direction Di. The rear upper surface 10g is a curved surface located at the rear end of the direction X of the base portion 12, substantially parallel to the direction Y, and including a generatrix extending in the direction Y. The rear side surface 10h is a surface located at the front end and the rear end of the base portion 12 in the direction Y and substantially orthogonal to the direction Y.

The vibration detection device 10 includes a housing 20. The housing 20 has a central portion 21 located at the center of the direction Y in the front view of FIG. The central portion 21 is a portion having a width D centered on the center line CL (center plane) orthogonal to the direction Y in the front view of FIG. 1. As shown in FIGS. 2 and 3, the central portion 21 has a front cover 22 and a rear case 23. The front cover 22 has a front wall 22a, and the rear case 23 has a rear wall 23a, a top wall 23b, and a bottom wall 23c. The front wall 22a is substantially orthogonal to the direction Dj. The rear wall 23a is substantially orthogonal to the direction Dj, substantially parallel to the front wall 22a, and is located behind the front wall 22a in the direction Dj. The top wall 23b is substantially orthogonal to the direction Di. The bottom wall 23c is substantially orthogonal to the direction Di, substantially parallel to the top wall 23b, and is located behind the top wall 23b in the direction Di.

The central portion 21, that is, the front cover 22 and the rear case 23 has electromagnetic shielding properties such as aluminum alloy (aluminum-based material), stainless steel (iron-based material), and magnesium alloy (magnesium-based material). It may be composed of a metal material. The central portion 21 is an example of a shielding portion.

The side cover 24A is a portion adjacent to the front of the central portion 21 in the direction Y (left in FIG. 1) in the front view of FIG. 1, and the side cover 24B is in the direction Y with respect to the central portion 21. It is a part adjacent to the rear (right side in FIG. 1). As shown in FIGS. 2 and 3, the side covers 24A and 24B have a front wall 24a, a rear wall 24b, a top wall 24c, a bottom wall 24d, and a side wall 24e, respectively. The front wall 24a is adjacent to the front wall 22a of the central portion 21 in the direction Y and is substantially orthogonal to the direction Dj. The rear wall 24b is adjacent to the rear wall 23a of the central portion 21 in the direction Y, is substantially orthogonal to the direction Dj, is substantially parallel to the front wall 24a, and is located behind the front wall 24a in the direction Dj. .. The top wall 24c is substantially orthogonal to the direction Di. The bottom wall 24d is substantially orthogonal to the direction Di, substantially parallel to the top wall 24c, and is located behind the top wall 24c in the direction Di. The top wall 24c is located between the front ends of the front wall 24a and the rear wall 24b in the direction Di, and the bottom wall 23c is located between the rear ends of the front wall 24a and the bottom wall 23c in the direction Di. The side wall 24e is substantially orthogonal to the direction Y. The side wall 24e of the side cover 24A is located between the front wall 24a, the rear wall 24b, the top wall 24c, and the front end of the bottom wall 24d in the direction Y, and the side wall 24e of the side cover 24B is the side cover 24B. It is located between the rear ends of the front wall 24a, the rear wall 24b, the top wall 24c, and the bottom wall 24d in the direction Y. The side wall 24e of the side cover 24A and the side wall 24e of the side cover 24B are substantially parallel to each other.

The side covers 24A and 24B may be made of a material having electromagnetic wave transmission, such as a synthetic resin material or an elastomer. The side covers 24A and 24B are examples of permeation sites.

The front wall 22a, 24a, the rear wall 23a, 24b, the top wall 23b, 24c, the bottom wall 23c, 24d, and the side wall 24e form a flat rectangular box-shaped protrusion 13, which is provided in the protrusion 13. The substrate assembly 30 is housed in the first storage chamber R1. The central portion 21 covers the periphery of the central portion of the direction Y of the substrate assembly 30 including the MCU 32a (micro controller unit, see FIG. 5), and the side cover 24A covers the front portion of the substrate assembly 30 in the direction Y in the direction Y. Covering from the front, the side cover 24B covers the rear portion of the substrate assembly 30 in direction Y from behind in that direction Y.

As shown in FIG. 2, the side wall 24e of the side cover 24B is provided with a plurality of through holes 24h. The external connection connector 32c and the external operation switch 32d are exposed from the through hole 24h, respectively. The through hole 24h may also be referred to as an opening.

The base portion 12 projects from the rear end of the direction Di of the central portion 21 in the direction opposite to the direction X. The base portion 12 has a rear case 23 and a rear cover 25.

FIG. 4 is a sectional view taken along line IV-IV of FIG. As shown in FIG. 4, the front cover 22, the rear case 23, and the side cover 24A are integrated by a male screw 14. Specifically, the male screw 14 is provided in the through hole 23e1 provided in the flange 23e of the rear case 23 and the side cover 24A in a posture in which the head is located at the rear end of the direction Dj and the screw portion is the tip of the direction Dj. It penetrates through the provided through hole 24f, and the threaded portion is coupled to the female screw hole 22b1 provided in the flange 22b of the front cover 22. Further, with the same configuration, the front cover 22, the rear case 23, and the side cover 24B are also integrated by the male screw 14. The male screw 14 is an example of a fitting.

FIG. 5 is a perspective view of the substrate assembly 30, and FIG. 6 is a perspective view of the substrate assembly 30 as viewed from a direction different from that of FIG. Note that FIGS. 5 and 6 show directions in the state of being assembled to the housing 20.

As shown in FIGS. 5 and 6, the board assembly 30 has a plurality of circuit boards 31 electrically connected to each other. In the board assembly 30, the plurality of circuit boards 31 are overlapped with each other at intervals in the thickness direction (direction Dj) of each circuit board 31. In the present embodiment, the substrate assembly 30 has two circuit boards 31 having substantially the same size, but is not limited thereto, and for example, three or more circuits electrically connected to each other. It may have a substrate 31 or may have one circuit board 31. Further, the substrate assembly 30 in which a plurality of circuit boards 31 are assembled in advance may be incorporated in the housing 20, or the substrate assembly 30 may be configured by incorporating each of the circuit boards 31 in the housing 20. Further, the sizes and shapes of the plurality of circuit boards 31 do not have to be the same. The circuit board 31 is an example of a board.

The shape of the circuit board 31 is quadrangular. The circuit board 31 has an upper end 31e, a lower end 31f, a right end 31g, and a left end 31h, respectively. The upper end 31e, the lower end 31f, the right end 31g, and the left end 31h can also be referred to as ends or sides, respectively. The upper end 31e is the front end of the direction Di of the circuit board 31 and extends along the direction Y. The lower end 31f is the rear end of the direction Di of the circuit board 31 and extends along the direction Y. The right end 31g is the front end of the circuit board 31 in the direction Y and extends along the direction Di. The left end 31h is the rear end of the circuit board 31 in the direction Y and extends along the direction Di.

Further, through holes 31b are provided in the corners 31a (four corners) of the circuit board 31. As shown in FIG. 4, the substrate assembly 30 is supported by the housing 20 with the corner portion 31a inserted into the slit 24g (notch) provided in the side cover 24A and the male screw 14 penetrating the through hole 31b. ing. A cushioning material or the like may be interposed between the housing 20 and the substrate assembly 30. Further, although not shown, the corner portion on the side opposite to the corner portion 31a shown in FIG. 4 (not shown in FIG. 4), in other words, the corner portion behind the direction Y has the same configuration. It is integrated with the housing 20 by another male screw (not shown).

As shown in FIG. 5, the front surface 31c located in front of the direction Dj of the circuit board 31A has, for example, an MCU 32a, a first radio unit 32b, an external connector 32c, and an electronic such as an external operation switch 32d. The component is mounted. The first wireless unit 32b executes data communication according to, for example, a BLE (Bluetooth low energy) standard. The first radio unit 32b has a built-in antenna. Therefore, the first radio unit 32b is an example of the first transmission unit and the transmission unit.

As shown in FIG. 6, the rear surface 31d of the other circuit board 31B, which is separated from the circuit board 31A behind the direction Dj and is located behind the direction Dj, has, for example, a second radio unit 32e or the above. Electronic components such as the antenna 32f of the second radio unit 32e are mounted. The second radio unit 32e, for example, executes data communication in accordance with the standard of LoRaWAN (registered trademark, long range wide area network). The antenna 32f is an example of a second transmitter and a transmitter.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. As shown in FIG. 7, the first radio unit 32b faces the side cover 24A. In other words, the first radio unit 32b is covered with the side cover 24A. Further, the antenna 32f of the second radio unit 32e faces the side cover 24B. In other words, the antenna 32f is covered with the side cover 24B. As described above, the side covers 24A and 24B are made of a material having electromagnetic wave transmission. Therefore, according to such a configuration, the wireless communication by the first wireless unit 32b and the antenna 32f is not hindered by the housing 20.

Further, the first radio unit 32b is mounted on the front surface 31c of the circuit board 31A, and the antenna 32f is mounted on the rear surface 31d of the circuit board 31B. In other words, the first radio unit 32b and the antenna 32f are mounted on opposite sides (front and rear) of the substrate assembly 30. Further, the first radio unit 32b is located closer to the right end 31g than the left end 31h of the circuit board 31A, and the antenna 32f is located closer to the left end 31h than the right end 31g of the circuit board 31B. In other words, the first radio unit 32b and the antenna 32f are mounted on opposite sides (right side and left side) of the board assembly 30. Further, as shown in FIGS. 5 and 6, the first radio unit 32b is located closer to the upper end 31e than the lower end 31f of the circuit board 31B, and the antenna 32f is lower than the upper end 31e of the circuit board 31B. It is located near 31f. In other words, the first radio unit 32b and the antenna 32f are mounted on opposite sides (upper and lower) of the substrate assembly 30. That is, the first radio unit 32b and the antenna 32f are diagonally arranged on the board assembly 30. Therefore, according to such a configuration, for example, the circuit boards 31A and 31B including the conductor are interposed between the first radio unit 32b and the antenna 32f, in which the first radio unit 32b and the antenna 32f are separated from each other. Alternatively, between the communication signal of the first wireless unit 32b and the communication signal of the antenna 32f, for example, the central portion 21 containing a material having electromagnetic wave shielding property is interposed between the first wireless unit 32b and the antenna 32f. Mutual interference is unlikely to occur.

Further, as shown in FIG. 5, in the circuit board 31A, the external connection connector 32c and the external operation switch 32d are located at the left end 31h, and the first radio unit 32b is located at the right end 31g. As described above, the first wireless unit 32b, the external connector 32c, and the external operation switch 32d are mounted on opposite sides (right side and left side) of the circuit board 31A (board assembly 30). Therefore, according to such a configuration, the first radio unit 32b and other components can be laid out more efficiently in the circuit board 31A (board assembly 30).

Further, as shown in FIG. 7, the battery 32 g that functions as a power source for the board assembly 30 is between the circuit board 31A and the circuit board 31B, in other words, the rear surface 31d of the circuit board 31A and the front surface 31c of the circuit board 31B. Is located between. The battery 32 g has a thin, flat rectangular parallelepiped shape in the direction Dj. The battery 32g is attached to at least one of the circuit board 31A and the circuit board 31B, for example, by being adhered or fixed by a fixative. With such a configuration, the protection of the battery 32 g is enhanced. Further, as shown in FIG. 7, since the battery 32g including the conductor portion is interposed between the first radio unit 32b and the antenna 32f, the communication signal of the first radio unit 32b and the communication signal of the antenna 32f are used. Mutual interference is unlikely to occur between them.

FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. As shown in FIGS. 5 and 8, a flexible printed wiring board 40 is attached to the lower end 31f of the front surface 31c of the circuit board 31A via the connector 32h.

A second storage chamber R2 surrounded by a rear case 23 and a rear cover 25 is provided in the base portion 12. The second accommodation chamber R2 is connected to the first accommodation chamber R1 via an opening 23d provided at the rear end of the direction Di of the rear wall 23a. The flexible printed wiring board 40, which is a part of the board assembly 30, is housed in the second storage chamber R2. As described above, the housing 20 constitutes the first storage chamber R1 and the second storage chamber R2 as spaces for accommodating the substrate assembly 30.

The flexible printed wiring board 40 has a plurality of wiring patterns (conductor, not shown in FIG. 8) and an insulating layer (not shown, not shown in FIG. 8) covering the plurality of wiring patterns. .. The flexible printed wiring board 40 is an example of a wiring member. The flexible printed wiring board 40 may also be referred to as a flexible substrate.

The flexible printed wiring board 40 extends while being bent between the first end portion 40a and the second end portion 40b. The vibration sensor 51 is mounted in the first mounting region Ai1 which is closer to the second end portion 40b than the first end portion 40a. The first end portion 40a is attached to the connector 32h in a state of extending along the direction Di. The second end portion 40b and the first mounting area Ai1 are located in the second storage chamber R2 provided in the base portion 12, and are attached to the base portion 12 in a state of extending along the direction Z. In the present embodiment, the rear case 23 is provided with a mounting surface 23f facing rearward in the direction X along the direction Y and the direction Z, and the second end portion 40b is fixed to the mounting surface 23f. The second end portion 40b is fixed to the mounting surface 23f with an adhesive, a sealing agent, or the like. That is, in the second accommodation chamber R2, the periphery of the vibration sensor 51 is covered with an adhesive or a sealing agent and fixed so as not to move, and the surrounding adhesive or the sealing agent is used to cover other than the mounting surface 23f. The transmission of vibration from the portion to the vibration sensor 51 is suppressed. Here, as is clear from FIG. 8, in the line of sight along the direction Y shown in FIG. 8, the direction Z in which the second end portion 40b extends and the direction Di in which the first end portion 40a extends are oblique. Crosses the road. In other words, in the line of sight along the direction Y, the direction Z in which the mounting surface 23f extends and the direction Di in which the protrusion 13 extends intersect diagonally. The second end portion 40b may extend in a direction different from the direction Z. Further, in order to improve the vibration detection accuracy by the vibration sensor 51, it is desirable that the rigidity of the rear case 23 having the mounting surface 23f is relatively high. The mounting surface 23f is an example of the second mounting surface. The vibration sensor 51 is an example of a sensor and a first sensor. Still, the first mounting area Ai1 is an example of a mounting site and a first mounting site.

The flexible printed wiring board 40 has flexibility and elasticity, and is provided in a state of being elastically bent between the first end portion 40a and the second end portion 40b. The flexible printed wiring board 40 is provided at two locations, a first bent portion 40d between the first end portion 40a and the intermediate portion 40c, and a second bent portion 40e between the intermediate portion 40c and the second end portion 40b. , S-shaped or crank-shaped. That is, in the first bent portion 40d and the second bent portion 40e, the flexible printed wiring boards 40 are bent in opposite directions to each other. As described above, in the state of being incorporated in the vibration detection device 10, the flexible printed wiring board 40 has two bent portions (first bent portion 40d and second bent portion 40e) bent in opposite directions. There is. In other words, the flexible printed wiring board 40 is incorporated in the vibration detecting device 10 so that the first bent portion 40d and the second bent portion 40e bent in the opposite directions are generated.

Further, at least in the vicinity of the second bent portion 40e, a gap is provided between the flexible printed wiring board 40 and the housing 20 and the board assembly 30. That is, the flexible printed wiring board 40 has the first accommodation chamber R1 in a state where the bending shape (position, radius of curvature, etc.) of the flexible printed wiring board 40 in the first bent portion 40d and the second bent portion 40e can be changed. And it is housed in the second containment chamber R2.

Further, as is clear from FIG. 8, the connection region Ac is connected to the circuit board 31A, and the first mounting region Ai1 is located on the side opposite to the circuit board 31A with respect to the circuit board 31B. According to such a configuration, the length between the connection area Ac and the first mounting area Ai1 in the flexible printed wiring board 40 becomes longer than when the connection area Ac is connected to the circuit board 31B. Since the flexible printed wiring board 40 is more easily bent, the vibration of the board assembly 30 is less likely to be transmitted from the connection region Ac to the first mounting region Ai1. The circuit board 31A is an example of a first circuit board, and the circuit board 31B is an example of a second circuit board.

FIG. 9 is a perspective view of the flexible printed wiring board 40 in the extended state before mounting. In FIG. 9, the direction L indicated by the arrow L is the longitudinal direction of the flexible printed wiring board 40. As shown in FIG. 9, the second end portion 40b is provided with a connection region Ac in which a plurality of terminals 40f electrically connected to the conductor are exposed. The vibration sensor 51 is mounted in the first mounting region Ai1 which is closer to the first end portion 40a than the second end portion 40b and the connection region Ac. In the first mounting area Ai1, although not shown, a conductor is exposed on the first surface 40 g (surface) of the flexible printed wiring board 40, and in the vibration sensor 51, the terminal of the vibration sensor 51 and the conductor are electrically connected. It is mounted on the flexible printed wiring board 40 in a state of being connected. Further, on the flexible printed wiring board 40, a sensor 52 different from the vibration sensor 51 such as a temperature sensor is mounted. The sensor 52 is mounted in the second end 40b and the second mounting area Ai2 which is closer to the first mounting area Ai1 than the connection area Ac. In the second mounting area Ai2, although not shown, a conductor is exposed on the first surface 40 g (surface) of the flexible printed wiring board 40, and in the sensor 52, the terminal of the sensor 52 and the conductor are electrically connected to each other. In the connected state, it is mounted on the flexible printed wiring board 40. When the sensor 52 is a temperature sensor, it is desirable that the thermal conductivity of the rear case 23 having the mounting surface 23f is relatively high in order to improve the temperature detection accuracy by the sensor 52. Therefore, at least the rear case 23 is preferably made of a metal material in this respect as well. The sensor 52 is an example of the second sensor, the second mounting area Ai2 is an example of the second mounting part, and the connection area Ac is an example of the connection part. The sensor 52 may be a sensor other than the temperature sensor.

FIG. 10 is an enlarged plan view of a part of the flexible printed wiring board 40. As shown in FIG. 10, the flexible printed wiring board 40 is provided with a slit 40i penetrating between the first surface 40 g and the second surface 40h (back surface) opposite to the first surface 40 g. There is. The slit 40i is located between a plurality of conductors 40j (wiring) extending between the first mounting area Ai1 or the second mounting area Ai2 and the connection area Ac of the flexible printed wiring board 40, and extends along the conductor 40j. There is. The slit 40i extends along the direction L, that is, the longitudinal direction of the flexible printed wiring board 40. The slit 40i is not provided between the two conductors 40j constituting the differential wiring 40j1, but is provided between the differential wiring 40j1 and the single wiring 40j2.

As described above, in the present embodiment, the housing 20 has an electromagnetic wave shielding central portion 21 (shielding portion) and electromagnetic wave transmitting side covers 24A and 24B (transmission portion), and is the first. The radio unit 32b and the antenna 32f (transmitter) are covered with side covers 24A and 24B (transmission portions) and are separated from each other. According to such a configuration, for example, it is possible to suppress the radio communication by the first radio unit 32b and the antenna 32f from being hindered by the housing 20. Further, mutual interference is unlikely to occur between the communication signal of the first radio unit 32b and the communication signal of the antenna 32f.

Further, in the present embodiment, the housing 20 has side covers 24A and 24B (two transmission portions) sandwiching the central portion 21, and the first radio unit 32b and the antenna 32f are covered by the side covers 24A and 24B, respectively. It has been. According to such a configuration, for example, a configuration in which the first radio unit 32b and the antenna 32f are covered by the side covers 24A and 24B, respectively, and arranged apart from each other can be realized by a relatively simple configuration. .. Further, for example, by interposing the central portion 21 between the side covers 24A and 24B, mutual interference is less likely to occur between the communication signal of the first radio unit 32b and the communication signal of the antenna 32f.

Further, in the present embodiment, the first radio unit 32b and the antenna 32f are mounted on opposite sides of the substrate assembly 30, respectively. According to such a configuration, for example, the first radio unit 32b and the antenna 32f are arranged apart from each other, and for example, a circuit board 31, a mounting component of the circuit board 31 such as an MCU 32a, a battery 32g, and the like. Since the electromagnetic waves are shielded by the components of the board assembly 30, mutual interference is less likely to occur between the communication signal of the first radio unit 32b and the communication signal of the antenna 32f.

Further, in the present embodiment, the first radio unit 32b and the antenna 32f are arranged diagonally to the substrate assembly 30. According to such a configuration, for example, since the first radio unit 32b and the antenna 32f are arranged apart from each other, mutual interference between the communication signal of the first radio unit 32b and the communication signal of the antenna 32f is further increased. It becomes difficult to occur.

Further, in the present embodiment, the substrate assembly 30 has two circuit boards 31A and 31B, and the first radio unit 32b and the antenna 32f are provided on different circuit boards 31A and 31B. According to such a configuration, for example, the first radio unit 32b and the antenna 32f are mounted on opposite sides of the board assembly 30, or the first radio unit 32b and the antenna 32f are diagonal to the board assembly 30. The configuration arranged in can be realized by a relatively simple configuration.

Further, in the present embodiment, the battery 32 g is sandwiched between the two circuit boards 31A and 31B. With such a configuration, for example, the protection of the battery 32 g is enhanced. Further, for example, since the battery 32g including the conductor portion is interposed between the first radio unit 32b and the antenna 32f, mutual interference occurs between the communication signal of the first radio unit 32b and the communication signal of the antenna 32f. hard.

Further, in the present embodiment, the connection area Ac (connection portion) of the flexible printed wiring board 40 (wiring member) is connected to the circuit board 31A (first board), and the first mounting area Ai1 (mounting portion) is a circuit. It is located on the side opposite to the circuit board 31A (first board) with respect to the board 31B (second board). According to such a configuration, for example, the length between the connection area Ac and the first mounting area Ai1 in the flexible printed wiring board 40 is longer than that in the case where the connection area Ac is connected to the circuit board 31B. Therefore, since the flexible printed wiring board 40 is more easily bent, the vibration of the board assembly 30 due to inertia or the like is less likely to be transmitted from the connection region Ac to the first mounting region Ai1. Therefore, the deterioration of the detection accuracy of the vibration sensor 51 (sensor) is suppressed.

Further, in the present embodiment, the flexible printed wiring board 40 has a slit extending between the plurality of conductors 40j (wiring) along the plurality of conductors 40j and penetrating between the first surface 40g and the second surface 40h. 40i is provided. According to such a configuration, for example, the flexible printed wiring board 40 is more easily bent, so that the vibration of the substrate assembly 30 due to inertia or the like is less likely to be transmitted from the connection region Ac to the first mounting region Ai1. Therefore, the deterioration of the detection accuracy of the vibration sensor 51 (sensor) is suppressed.

Further, in the present embodiment, in the flexible printed wiring board 40, the second mounting area Ai2 (second mounting portion portion) on which the sensor 52 (second sensor) different from the vibration sensor 51 is mounted is larger than the connection area Ac. It is located near the first mounting area Ai1. According to such a configuration, for example, the sensor 52 can obtain the detection result at a position close to the vibration sensor 51. Further, for example, it is possible to suppress the influence of the vibration of the substrate assembly 30 on the detection result by the sensor 52. Further, for example, when the sensor 52 is a temperature sensor, the temperature can be detected more accurately at a position close to the inspection object 100.

Further, in the present embodiment, for example, the flexible printed wiring board 40 has flexibility, the vibration sensor 51 and the substrate assembly 30 are electrically connected, and the bending shape can be changed in the housing 20. It is contained. According to such a configuration, for example, even if vibration occurs in the substrate assembly 30 due to inertia or the like, the vibration is alleviated by bending (deflection) of the flexible printed wiring board 40 and is not easily transmitted to the vibration sensor 51. Become. Therefore, according to the present embodiment, for example, it is possible to suppress the vibration due to the inertia of the substrate assembly 30 from affecting the vibration detection by the vibration sensor 51. The bent portion may be at one location or at three or more locations. Further, the elastic wiring member is not limited to the flexible printed wiring board 40.

Further, in the present embodiment, for example, the protruding portion 13 accommodates the substrate assembly 30 in a posture extending in a direction (direction Di) intersecting with the contact surface 11b, and protrudes from the base portion 12 so as to be separated from the contact surface 11b. There is. If the portion of the housing 20 accommodating the substrate assembly 30 is configured to extend long along the inspection object 100 while being attached to the inspection object 100, the surface 100a of the inspection object 100, that is, vibration. A relatively wide area is required for mounting the vibration detection device 10 on the mounting surface of the detection device 10. In this regard, according to the present embodiment, for example, since the vibration detection device 10 can be mounted on a narrower region of the surface 100a of the inspection object 100, the degree of freedom of the mounting position (detection position) of the vibration detection device 10 is increased. Further, it is possible to obtain an effect that the vibration detection device 10 can be easily attached to a position where vibration detection is required or a position more suitable for vibration detection.

Further, in the present embodiment, for example, the protruding portion 13 projects in the direction Di inclined with respect to the direction Z (and the direction X). In other words, the projecting portion 13 projects from the base portion 12 in the direction Di between the direction Z and the direction X. According to such a configuration, for example, the center of gravity of the protruding portion 13 can be brought closer to the contact surface 11b along the direction Z as compared with the configuration in which the protruding portion 13 protrudes along the direction Z. As a result, the moment arm of the center of gravity of the base portion 12 having the contact surface 11b (center position in the direction X) as a fulcrum can be made shorter, so that the vibration due to the inertia of the protruding portion 13 can be made smaller. As a result, it is possible to suppress the vibration due to the inertia of the protruding portion 13 from affecting the vibration detection by the vibration sensor 51. The narrower angle between the direction Di and the direction Z is, for example, 0 ° or more and 45 ° or less.

Further, in the present embodiment, for example, the projecting portion 13 projects from the end portion of the base portion 12 in the direction X in the direction Di inclined with respect to the direction Z. Therefore, according to the present embodiment, for example, the center of gravity of the protruding portion 13 can be brought closer to the contact surface 11b as compared with the configuration in which the protruding portion 13 protrudes from the central portion of the base portion 12 in the direction Di. As a result, the moment arm of the center of gravity of the base portion 12 having the contact surface 11b (center position in the direction X) as a fulcrum can be made shorter, so that the vibration due to the inertia of the protruding portion 13 can be made smaller. As a result, it is possible to suppress the vibration due to the inertia of the protruding portion 13 from affecting the vibration detection by the vibration sensor 51. The position where the protruding portion 13 protrudes from the base portion 12 is not limited to the front end of the direction X of the base portion 12, and may be deviated from the central portion of the direction X of the base portion 12 in the direction X.

Although the embodiments of the present invention have been illustrated above, the above-described embodiments are merely examples and are not intended to limit the scope of the invention. The above embodiment can be implemented in various other embodiments, and various omissions, replacements, combinations, and changes can be made without departing from the gist of the invention. These embodiments are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof. Further, the configuration and shape of each embodiment can be partially replaced. In addition, specifications such as each configuration and shape (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) are changed as appropriate. can do.

For example, the number of a plurality of transmitters may be three or more. Further, the communication method of the transmission unit is not limited to the above-mentioned communication method. Further, the form of the transmitting unit may be an antenna or a module integrated with an antenna. Further, various forms of the antenna can be adopted.

Further, the wiring member is not limited to the flexible printed wiring board, and may be another wiring member having flexibility (flexibility) such as a flexible flat cable or a plurality of cables. Further, the first sensor and the second sensor may be other than the vibration sensor and the temperature sensor.

10 ... Vibration detection device (detection device), 11b ... Contact surface (first mounting surface), 20 ... Housing, 21 ... Central part (shielding part), 23f ... Mounting surface (second mounting surface), 24A, 24B ... Side Cover (transmissive part), 30 ... board assembly, 31 ... circuit board (board), 31A ... circuit board (first board, board), 31B ... circuit board (second board, board), 32b ... first wireless unit (first radio unit) 1st transmitter, transmitter), 32f ... antenna (second transmitter, transmitter), 32 g ... battery, 40 ... flexible printed wiring board (wiring member), 40 g ... first surface, 40h ... second surface, 40i ... Slit, 40j ... Conductor (wiring), 51 ... Vibration sensor (first sensor, sensor), 52 ... Sensor (second sensor), Ac ... Connection area (connection part), Ai1 ... First mounting area (first mounting) Site, mounting site), Ai2 ... Second mounting area (second mounting site).

Claims (2)

With the sensor
A plurality of transmitters that wirelessly transmit signals indicating detection results by the sensor by different communication methods, and
A board assembly on which the plurality of transmitters are mounted, and
The sensor has a shielding portion made of a material that shields radio waves transmitted from the plurality of transmitting units, and a transmission portion made of a material that transmits radio waves transmitted from the plurality of transmitting units. , And the housing that houses the board assembly ,
Equipped with
The shielding portion embraces at least a portion of the substrate assembly and is configured in a cylindrical shape with both ends open.
The permeation site includes a side wall, a front wall and a rear wall connected via the side wall, and a top wall and a bottom wall arranged at both ends of the side wall, the front wall, and the rear wall, respectively. Includes two permeation sites that sandwich the shield so as to cover the open ends on both sides of the shield.
Each of the plurality of transmitters is covered with one of the two transmission sites on one side, the front side, the rear side, the upper side, and the lower side, and is arranged so as to be separated from each other. Detection device. The plurality of transmitters have two transmitters arranged diagonally opposite to each other in the board assembly .
One of the two transmission units is covered with one of the two transmission portions on the side of the one side, the front side, the rear side, the upper side, and the lower side, and the two transmission units are covered. The other of the claims is covered by the other of the two permeation sites, the side opposite to the transmitter on one side, the front, the rear, the upper, and the lower. Item 1. The detection device according to item 1.

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