Detection Equipment

Abstract

To reduce manufacturing costs.SOLUTION: A detection device includes: a case member; a cover member; a board installed in a space surrounded by the case member and the cover member and mounted with a sensor for measuring a physical quantity and a wireless communication circuit; a battery housed in the space; and a metal pedestal placed on the case member side in the space. The pedestal has an end facing the sensor in the space. The battery is housed closer to the pedestal side than the board in the space.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a detection device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there have been proposed techniques relating to sensor devices that are attached to a measured object such as a large pump or motor to obtain information from the measured object in order to grasp the condition of the measured object.

[0003] In recent years, there has been a trend to incorporate a communication module into the sensor device in order to enable diagnosis of the object to be measured even in a remote location. For this reason, the case forming the sensor device contains a communication module and a battery in addition to a vibration sensor and a temperature sensor.

[0004] It is preferable to provide a vibration sensor and a temperature sensor in a position where the state of the object to be measured can be measured with high accuracy in the case, and provide a communication module in a position where communication is possible. For this reason, in the prior art, a structure has been proposed in which the inside of the case is divided into multiple layers using a rigid-flexible board, a sensor is provided in a layer near the object to be measured, a communication module is provided in a layer near the outside of the case opposite the layer near the object to be measured, and a battery is provided in a layer between these layers.

[0005] On the other hand, in the configuration disclosed in the following Patent Document 1, a wireless circuit and a vibration sensor are arranged on a single substrate, and spacers and batteries are arranged in layers between the vibration sensor and the object to be measured. By applying the configuration disclosed in Patent Document 1, a rigid-flexible substrate is not used, thereby realizing a reduction in manufacturing costs. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-139753 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the technology disclosed in Patent Document 1, when trying to measure the state of an object to be measured, there is a possibility that the accuracy of the measurement will be reduced because of the layered presence of spacers and batteries between the object to be measured and the vibration sensor. [Means for solving the problem]

[0008] The detection device according to one embodiment includes a case member, a cover member, a substrate on which a sensor for measuring a physical quantity and a wireless communication circuit are mounted, the substrate being disposed in a space surrounded by the case member and the cover member, a battery housed in the space, and a Rudai a seat portion, the seat portion having an end portion facing the sensor within the space; The case member is capable of contacting the object to be measured at a surface between the end and the base, and is provided so that the substrate is in contact with the end and at a position where the sensor and the end overlap in a direction perpendicular to the surface. The battery is accommodated in the space on the base side of the board. Effect of the Invention

[0009] According to one embodiment, in a detection device, simplification is achieved by mounting a sensor and a wireless communication circuit on a substrate, and the configuration between the sensor and the object to be measured is simplified, thereby improving the measurement accuracy. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is an external perspective view of a sensor device according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view showing the internal configuration of the sensor device according to the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of the sensor device 10 according to the first embodiment attached to an object to be measured, taken along the line A in FIG. [Figure 4] FIG. 4 is a cross-sectional view of the sensor device 10 according to the second embodiment in a state where it is attached to an object to be measured. [Diagram 5]FIG. 5 is a cross-sectional view of a sensor device 110 according to the third embodiment in a state where it is attached to an object to be measured. [Figure 6] FIG. 6 is a cross-sectional view of a sensor device 210 according to the fourth embodiment in a state where it is attached to an object to be measured. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An embodiment will be described below with reference to the drawings. In the embodiment shown below, a sensor device (an example of a detection device) that houses a vibration sensor, a temperature sensor, and the like will be described as an example of a detection device.

[0012] (First embodiment) Fig. 1 is an external perspective view of a sensor device according to the first embodiment. As shown in Fig. 1, the directions of the sensor device 10 are defined as the height direction (Z-axis direction), the vertical direction (X-axis direction), and the horizontal direction (Y-axis direction) of the sensor device 10.

[0013] 1, the exterior of the sensor device 10 is formed by combining a case body 12 (an example of a case member) and a lid body 11 (an example of a covering member). As shown in Fig. 1, the sensor device 10 is provided with a through hole 15 for screwing that penetrates the lid body 11 and the case body 12. If the object to be measured is threaded, the sensor device 10 can be screwed to the object to be measured.

[0014] The object to be measured may be any object, but may be, for example, a vibrating object such as a large pump or motor.

[0015] 2 is an exploded perspective view showing the internal configuration of the sensor device 10 according to this embodiment. As shown in FIG. 2, the sensor device 10 includes a cover 11, screws 21A to 21D, a substrate 22, a battery 31, a screw 51, and a case body 12.

[0016] The lid 11 is made of a synthetic resin material such as plastic and is formed into a box shape having a substantially rectangular upper surface with rounded corners. Since a synthetic resin material is used for the lid 11 according to this embodiment, a wireless communication module (an example of a wireless communication circuit) 26, which will be described later, is capable of wireless communication with an external device via the lid 11. Although the lid 11 of this embodiment will be described using a synthetic resin material such as plastic as an example of a resin material, the material is not limited to a resin material and may be any material that does not impede wireless communication by the wireless communication module 26.

[0017] The substrate 22 is provided with an opening 22E corresponding to the through hole 15. Furthermore, a wireless communication module 26, an acceleration sensor 23, a temperature sensor 24, and a piezoelectric sensor 25 are mounted on the substrate 22. Furthermore, the substrate 22 is provided with electrodes 27A and 27B for connection to a battery 31. As shown in FIG. 2, the substrate 22 is placed in a space surrounded by the cover 11 and the case body 12.

[0018] By connecting the electrodes 27A, 27B to the terminals 31A, 31B of the battery 31, it becomes possible to supply power to the wireless communication module 26 and various sensors (e.g., the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25) provided on the substrate 22.

[0019] The wireless communication module 26 is a module for performing wireless communication with an external device. As a method of wireless communication of the wireless communication module 26 according to the present embodiment, for example, a wireless communication method such as Wi-Fi (registered trademark), Bluetooth (registered trademark), or Sigfox (registered trademark) may be used. Note that the external device with which the wireless communication module 26 communicates may be a communication terminal used by an operator, or may be a management server of a monitoring center connected via a public network.

[0020] The acceleration sensor 23 and the piezoelectric sensor 25 are used as vibration sensors for detecting vibrations of the object to be measured. In this embodiment, an example in which the acceleration sensor 23 and the piezoelectric sensor 25 are provided will be described, but it is also possible to provide either the acceleration sensor 23 or the piezoelectric sensor 25. The temperature sensor 24 detects the temperature of the object to be measured.

[0021] Signals indicating the detection results of each of the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25 are transmitted to an external device via the wireless communication module .

[0022] Furthermore, the sensors provided in the sensor device 10 of this embodiment are not limited to the acceleration sensor 23, temperature sensor 24, and piezoelectric sensor 25 described above, but may be any sensor capable of measuring a physical quantity related to a measurement target object.

[0023] The battery 31 supplies power to the board 22 and is stored in the storage area 12E of the case body 12.

[0024] Case body 12 is formed in a box shape having a substantially rectangular bottom surface with rounded corners so that it can be combined with lid body 11. The bottom surface of case body 12 on the negative Z-axis direction side comes into contact with the object to be measured.

[0025] The case body 12 also includes a pedestal portion 41. The pedestal portion 41 according to this embodiment is integrally molded with the case body 12. The case body 12 and the pedestal portion 41 are made of a metal such as a zinc die-cast product, an aluminum die-cast product, or SUS (Steel Use Stainless).

[0026] The base portion 41 protrudes from a surface (inner bottom surface of the case body 12) on the positive side of the Z axis (the inner side of the case body 12) of the case body 12 in the direction toward which the lid body 11 and the substrate 22 are present.

[0027] The height (distance) in the Z-axis direction (from the outer surface of the case body 12 facing the object to be measured to the end surface 41B) of the base portion 41 of the case body 12 is formed to be higher than the height (distance) in the Z-axis direction (the same direction as the direction from the outer surface of the case body 12 facing the object to be measured to the end surface 41B) of the battery 31. More specifically, the distance from the outer surface of the case body 12 facing the object to be measured to the end surface 41B of the base portion 41 is longer than the height (distance) of the battery 31 in the Z-axis direction plus the thickness of the case body 12 in the Z-axis direction near the battery 31.

[0028] In this embodiment, by making the height of the base 41 in the Z-axis direction higher than that of the battery 31, it is possible to accommodate the battery 31 closer to the base 41 than to the board 22. This prevents the battery 31 from interfering with wireless communication by the wireless communication module 26 in the sensor device 10.

[0029] The base portion 41 is provided with a through hole 41A for receiving the screw 51. This through hole 41A forms a part of the through hole 15 that passes through the sensor device .

[0030] By storing the battery 31 in the storage area 12E, the battery 31 is disposed closer to the case body 12 and the base portion 41 than the board 22. This arrangement can prevent the battery 31 from being provided between the wireless communication module 26 and the lid body 11.

[0031] At the four corners of the substrate 22, through holes 22A to 22D are formed.

[0032] Case body 12 has a bottom surface that comes into contact with the object to be measured. Case body 12 is provided with screw receiving portions 12A to 12D at four corners corresponding to through holes 22A to 22D formed in substrate 22. Screw holes (hole portions) for fitting four screws 21A to 21D are formed in each of screw receiving portions 12A to 12D.

[0033] The screw receiving portions 12A to 12D extend from the bottom surface of the case body 12 in the space inside the case body 12 and the cover 11 in the Z-axis direction in which the cover 11 exists by a length that is approximately equal to the length of the base portion 41 in the Z-axis direction. This allows the sensor device 10 according to this embodiment to stably maintain the state in which the substrate 22 is in contact with the base portion 41.

[0034] Furthermore, in the sensor device 10 according to this embodiment, the substrate 22 can be held so as not to come into contact with the wall surfaces of the case body 12 and the lid body 11 that exist on the X-axis direction side and the Y-axis direction side of the substrate 22. Therefore, in this embodiment, noise such as vibrations from the external environment (different from the object to be measured) via the case body 12 and the lid body 11 can be suppressed for various sensors mounted on the substrate 22.

[0035] The screws 21A to 21D screw the substrate 22 into the screw receiving portions 12A to 12D of the case body 12. The screw 51 screw-fastens the sensor device 10 to the object to be measured.

[0036] An end surface (an example of an end portion) 41B of the base portion 41 facing the lid body 11 and the substrate 22 is formed so as to contact the bottom surface of the substrate 22 which is fixed with a screw.

[0037] The acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25 are provided at a position facing the end face 41B of the base 41 via the substrate 22. The position facing the end face 41B of the base 41 via the substrate 22 is, for example, a position facing the end face 41B across the substrate 22, specifically, a position directly above the end face 41B. In other words, the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25 are provided at a position overlapping the end face 41B of the base 41 in a top view seen from the positive direction of the Z axis. As a result, the physical quantity of the object to be measured is transmitted to the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25 via the base 41 and the substrate 22.

[0038] Fig. 3 is a cross-sectional view of the sensor device 10 according to this embodiment attached to an object to be measured, taken along the line A in Fig. 1. As shown in Fig. 3, a substrate 22 and a battery 32 are disposed in a space formed inside the sensor device 10 by combining the cover 11 and the case body 12.

[0039] Moreover, the sensor device 10 is attached to the object to be measured 301 by a screw 51 .

[0040] As shown in FIG. 3, the various sensors (for example, the acceleration sensor 23 and the piezoelectric sensor 25) are provided at positions facing the end surface 41B of the base 41 via the substrate 22 (with the substrate 22 sandwiched therebetween). The base 41 is made of metal as described above. The base 41 made of metal has a degree of rigidity that allows it to transmit a physical quantity related to a physical phenomenon (for example, vibration, etc.) occurring in the object to be measured 301. This allows the base 41 to transmit a physical quantity, such as vibration, occurring in the object to be measured 301 to the various sensors (for example, the acceleration sensor 23 and the piezoelectric sensor 25) with high accuracy. The physical quantity detected by the various sensors is not limited to vibration, and may be anything that is transmitted via the base 41. The physical quantity detected by the various sensors may be, for example, sound. In this case, the various sensors include microphones that detect sound transmitted via the base 41.

[0041] Furthermore, in this embodiment, the thermal conductivity of the pedestal 41 can also be determined from the metal forming the pedestal 41. Therefore, the temperature sensor 24 can also determine the temperature of the measurement object 301 transmitted via the pedestal 41.

[0042] Incidentally, it is preferable to provide the various sensors near the object to be measured. However, when the various sensors are provided near the object to be measured, in order to place the communication module and the battery in suitable positions, it is necessary to realize a multi-layer structure inside the case using a rigid-flexible board or the like that has been used conventionally.

[0043] In contrast to this, in this embodiment, various sensors are provided at positions facing end face 41B of pedestal part 41 across substrate 22. As a result, physical quantities related to physical phenomena occurring in object to be measured 301 are transmitted with high accuracy (transmission rate) to the various sensors along the directions indicated by arrows 311 and 312 via pedestal part 41 made of metal.

[0044] The height of the base portion 41 in the Z-axis direction is formed to be higher than the battery 32. Therefore, in the sensor device 10 of the present embodiment, the battery 32 is disposed below the substrate 22 (on the negative side in the Z-axis direction).

[0045] Since the battery 32 is disposed below the substrate 22 (negative side in the Z-axis direction) in this manner, the wireless communication module 26 provided on the upper side (positive side in the Z-axis direction) of the substrate 22 can wirelessly communicate with an external communication device via the lid 11 without being hindered by the battery 32. Note that the lid 11 is made of a synthetic resin material and does not hinder wireless communication.

[0046] In the sensor device 10 according to this embodiment, since the substrate 22 is provided on the upper side (positive side in the Z-axis direction) of the base 41, various sensors and the wireless communication module 26 can be arranged on the single substrate 22 without using a rigid-flexible substrate. In addition, since the various sensors are provided on the substrate 22 at positions facing the end surface 41B of the base 41, physical quantities such as vibrations generated in the measurement object 301 can be detected with high accuracy.

[0047] As described above, in this embodiment, various sensors and the wireless communication module 26 can be arranged on the single board 22 without using a rigid-flexible board, so that the manufacturing cost of the sensor device 10 can be reduced. Alternatively, various sensors and the wireless communication module 26 can be arranged on the single board 22 without using multiple boards (a first board on which various sensors are mounted and a second board on which a wireless communication module is mounted), so that the manufacturing cost of the sensor device 10 can be reduced. In addition, when manufacturing the sensor device 10 of this embodiment, after storing the battery 32 in the case main body 12, the board 22 is placed on the base part 41 and the through holes 22A to 22D at the four corners are screwed, so that the manufacturing burden is reduced compared to a conventional multi-layered sensor device.

[0048] In the present embodiment, an example in which the pedestal portion 41 and the case body 12 are integrally formed has been described. However, the present embodiment is not limited to the example in which the pedestal portion 41 and the case body 12 are integrally formed, and the pedestal portion 41 and the case body 12 may be provided as separate bodies. In addition, in the case of separate bodies, the pedestal portion 41 is typically formed of metal, but the case body 12 does not have to be metal. Furthermore, the pedestal portion 41 does not have to be metal as long as it has a rigidity to the extent that the physical quantity of the object to be measured 301 can be transmitted to the substrate 22. The extent to which the physical quantity of the object to be measured 301 can be transmitted to the substrate 22 is, for example, the extent to which the vibration sensor can accurately detect the vibration of the object to be measured 301, or the extent to which the temperature sensor 24 can accurately detect the temperature of the object to be measured 301, etc.

[0049] In the sensor device 10 according to this embodiment, a through hole 15 is provided so as to include the through hole 41A of the base part 41. This allows the sensor device 10 to be screwed to the object to be measured 301, making it easy to attach and detach the sensor device 10.

[0050] In the sensor device 10 of this embodiment, the substrate 22 is in direct contact with the base portion 41, thereby improving the efficiency of transmitting physical quantities such as vibrations generated in the object to be measured 301 via the base portion 41 to various sensors on the substrate (e.g., the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25).

[0051] Second embodiment In the above-described embodiment, the sensor device 10 is screwed to the object to be measured 301. However, the above-described embodiment is not limited to the method of attaching the sensor device 10 to the object to be measured 301 by screwing. Therefore, in the second embodiment, an example in which the sensor device is attached to the object to be measured by magnetic force will be described.

[0052] 4 is a cross-sectional view of the sensor device 10 according to this embodiment in a state where it is attached to an object to be measured. Note that the sensor device 10 according to this embodiment has the same configuration as that of the first embodiment, and therefore the description thereof will be omitted.

[0053] In the example shown in FIG. 4, the object to be measured 301A of this embodiment is not provided with a screw hole.

[0054] On the other hand, as described above, the case body 12 of the sensor device 10 is made of metal, so that the sensor device 10 can be attached to an object having a magnetic force.

[0055] Therefore, in this embodiment, for example, a thin magnet sheet 401 is attached to the object to be measured 301A. The magnet sheet 401 shown in FIG. 4 has a magnetic force and is therefore capable of attracting the sensor device 10. The magnet sheet 401 is formed to a thickness that does not affect the measurement of the physical quantity of the sensor device 10. The actual thickness varies depending on the embodiment. Although this embodiment describes an example in which the magnet sheet 401 is used, any medium may be used as long as it is a magnet.

[0056] This allows the sensor device 10 to be attached to the object to be measured 301A by the magnet sheet 401 without using screws or the like.

[0057] Furthermore, the attachment method using magnetic force is not limited to the above-mentioned method. For example, if the object to be measured 301A is an object having magnetic force, the sensor device 10 may be directly attached to the object to be measured 301A. Also, if the object to be measured 301A is a magnetic body, the magnet sheet 401 may be fixed to the case body 12.

[0058] Further, the sensor device 10 may be attached to the measurement target object 301A by other methods such as using an adhesive.

[0059] In this way, even if a mounting method other than screw fastening, such as magnetic mounting or adhesive, is used, the same effects as those of the first embodiment can be obtained.

[0060] (Third embodiment) As a method for attaching the sensor device to the object to be measured, various methods other than those described in the above-mentioned embodiments are possible. Therefore, in the third embodiment, an example in which a male screw portion is provided on the case body of the sensor device will be described.

[0061] 5 is a cross-sectional view of the sensor device 110 according to this embodiment in a state where it is attached to an object to be measured. Note that in the sensor device 110 according to this embodiment, the same reference numerals are assigned to the same configurations as those in the above-mentioned embodiment, and the description thereof will be omitted.

[0062] 5, the sensor device 110 is formed by combining a cover 111 and a case body 112. In the space between the cover 111 and the case body 112, a battery 32 and a substrate 122 are provided.

[0063] 5, the cover 111 and the case main body 112 are not provided with through holes as in the first embodiment. Similarly, the base 141 is also not provided with through holes.

[0064] The battery 32 and the wireless communication module 26 are disposed in the same manner as in the first embodiment. The various sensors (the acceleration sensor 23, the temperature sensor 24, and the piezoelectric sensor 25) are disposed in the same manner as in the first embodiment, but are not limited to the arrangement in the first embodiment, and may be disposed in a position facing the end surface 141B of the base portion 141 via the substrate 122.

[0065] 5, unlike the first embodiment, the sensor device 10 does not have a through hole 15, but instead has a male thread portion 142 formed in a case body 112 of the sensor device 110. A female thread portion corresponding to the male thread portion 142 is cut in the object to be measured 301B.

[0066] This allows an operator to screw the sensor device 110 to the object to be measured 301B by rotating the male threaded portion 142 of the sensor device 110 so as to screw it into the female threaded portion of the object to be measured 301B, without using a separate screw or the like.

[0067] The sensor device 110 of this embodiment has the above-mentioned configuration, so that an operator can easily attach the sensor device 110 to the measurement target 301B. Furthermore, the sensor device 110 according to this embodiment can measure physical quantities such as vibration and temperature generated in the measurement target 301B with high accuracy, similar to the above-mentioned embodiments.

[0068] (Fourth embodiment) The internal configuration of the sensor device shown in the above-mentioned embodiment is shown as an example, and various aspects of the internal configuration of the sensor device are conceivable. Therefore, in the fourth embodiment, an example in which a plurality of batteries are provided in the sensor device will be described.

[0069] 6 is a cross-sectional view of the sensor device 210 according to this embodiment in a state where it is attached to an object to be measured. Note that in the sensor device 210 according to this embodiment, the same reference numerals are assigned to the same configurations as those in the above-mentioned embodiment, and the description thereof will be omitted.

[0070] 6, sensor device 210 is a combination of lid 211 and case body 212. Two batteries 232A, 232B and substrate 222 are provided in the space between lid 211 and case body 212. Note that, although an example in which two batteries 232A, 232B are provided will be described in this embodiment, the number of batteries stored in sensor device 210 is not limited, and three or more batteries may be provided.

[0071] 6, the cover 211 and the case body 212 according to this embodiment are provided with a through hole 215, similar to the first embodiment. Accordingly, the base part 241 is also provided with a through hole 241A.

[0072] Moreover, the substrate 222 is also provided with an opening corresponding to the through hole 215. The substrate 222 of this embodiment has four corners secured by screws 21A to 21D, similar to the substrate 22 of the first embodiment.

[0073] The arrangement of the wireless communication module 26 is the same as in the first embodiment. In addition, the various sensors (acceleration sensor 23, temperature sensor 24, and piezoelectric sensor 25) are arranged at positions facing the end surface 241B of the base part 241 via the substrate 222. This makes it possible to achieve the same effects as in the first embodiment.

[0074] One battery 232A is provided near a wall portion in the positive Y-axis direction of case body 212, and the other battery 232B is provided near a wall portion in the negative Y-axis direction of case body 212. Batteries 232A and 232B are provided closer to base portion 241 (negative Z-axis direction side) than substrate 222.

[0075] As a result, the sensor device 210 of this embodiment has the same effects as the sensor device 10 of the first embodiment, and can transmit information for a longer period of time using multiple batteries compared to the sensor device 10 of the first embodiment. This allows the sensor device 210 to monitor the object to be measured for a long period of time without having to replace the battery of the sensor device 210.

[0076] In the above-described embodiment, an example has been described in which a lid made of synthetic resin material is provided to be combined with the case body of the sensor device 210. However, the above-described embodiment is not limited to the example in which a lid is provided on the case body, and the case body carrying the substrate may be sealed with resin (an example of a covering member) so as to cover the substrate.

[0077] The above-described embodiment is an example of the sensor device, and other embodiments may be used. For example, the sensor device may include a plurality of pedestals, and various sensors may be provided on the substrate of each of the plurality of pedestals so as to face the end surface of the pedestal.

[0078] In the above-described embodiment, the various sensors (acceleration sensor 23, temperature sensor 24, and piezoelectric sensor 25) are mounted on the upper surface of substrate 22, but may be mounted on the lower surface of substrate 22. In this case, the various sensors may be disposed so as to be in contact with end surface 41B of base portion 41.

[0079] In the sensor device according to the embodiment described above, the internal structure is simplified by constituting the board into one sheet, and thus the manufacturing cost can be reduced. Also, in the sensor device according to the embodiment, the battery is stored on the base side of the board, and thus the structure for storing the battery can be simplified, and the number of parts can be reduced, making assembly easier. In the sensor device according to the embodiment described above, the number of parts is reduced, and the board is reduced to one sheet, making it possible to reduce the size of the product.

[0080] In the sensor device according to the present embodiment, physical quantities related to physical phenomena occurring in the object to be measured can be collected by an external device. Then, by analyzing the collected information such as physical quantities by an application running on the external device, the manager can grasp the deterioration of the object to be measured and the timing of replacing parts constituting the object to be measured, thereby reducing maintenance costs and the labor burden of workers.

[0081] Although one embodiment of the present invention has been described in detail above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. [Explanation of symbols]

[0082] 10, 110, 210 Sensor device (detection device) 11, 111, 211 Lid body (covering member) 12, 112, 212 Case body (case material) 12A~12D Screw receiving part 12E Storage area 15, 215 through hole 21A~21D Screws 22, 122, 222 board 22A~22D through hole 23 Acceleration Sensor 24 Temperature Sensor 25 Piezo Sensor 26 Wireless communication module (wireless communication circuit) 27A, 27B electrode 31, 232A, 232B Battery 31A, 31B terminal 41, 141 Pedestal 41A, 141A through hole 41B, 141B End face (end) 142 Male thread 301, 301A, 301B Object to be measured 401 Magnetic Sheet

Claims

1. A case member; A covering member; a substrate on which a sensor for measuring a physical quantity and a wireless communication circuit are mounted, the substrate being disposed in a space surrounded by the case member and the cover member; A battery housed within the space; a base portion disposed on the case member side in the space, the base portion has an end portion facing the sensor within the space, the case member is capable of contacting an object to be measured at a surface passing through the end portion and the base portion, the substrate is provided in contact with the end portion, and the sensor is provided at a position where the sensor and the end portion overlap in a direction perpendicular to the surface; The battery is accommodated in the space on a side closer to the base than the board. Detection device.

2. The sensor is at least one of a vibration sensor that measures vibration of a measurement object to which the detection device is attached, and a temperature sensor that measures the temperature of the measurement object. The detection device according to claim 1 .

3. The case member and the base portion are integrally formed.

3. A detection device according to claim 1 or 2.

4. A distance from an outer surface of the case member facing the object to be measured to the end of the base is longer than a distance of the battery in the same direction.

4. A detection device according to claim 1.

5. The base portion is provided with a through hole for screwing to fix the detection device to the outside via the case member.

5. A detection device according to any one of claims 1 to 4.

6. The case further includes a plurality of screw receiving portions each having a hole for receiving a screw, the hole extending from the case member in the space toward the cover member by a length substantially equal to the length of the base portion in the direction of the cover member, The substrate is fixed between the plurality of screws and the plurality of screw receiving portions into which the screws are fitted.

6. A detection device according to any one of the preceding claims.

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