Detection device and watch

Abstract

The invention provides a detection device and a watch. The detection device is provided with: a main body case having a part of the main surface open; the substrate is arranged in the main body shell; a first detection unit that is provided below the substrate within the main body case and that detects biological information of a user; the window part is arranged below the first detection part and corresponds to the opening of the main body shell; and a second detection unit that is provided between the substrate and the window unit and that detects, via the window unit, whether the device is in contact with or close to the skin of the user. Accordingly, corrosion and wear can be prevented, and the detection sensitivity of the body-mounted sensor can be ensured.

Description

Technical Field

[0001] The present invention relates to a detection device used in a body-worn device such as a watch mounted on an arm or other part of the body, and a watch having the detection device. Background Art

[0002] For example, in a watch-type body-worn device that is mounted on a wrist for use, as described in Japanese Patent Application Laid-Open No. 2016-129526, there is known a device that prevents wasteful power consumption by detecting the pulse only when the device is worn on the wrist.

[0003] A body-worn device such as that disclosed in Japanese Patent Application Laid-Open No. 2016-129526 includes: a pulse sensor for detecting the pulse of the wearer and a body-worn sensor for detecting whether the body-worn device is worn on the arm. In this case, the body-worn sensor is configured to have a plurality of metal pins protruding from the bottom of the body-worn device, and detects changes in electrostatic capacitance generated on the body by contacting the arm with the plurality of metal pins, thereby determining whether the body-worn device is worn on the arm. Summary of the invention

[0004] Problems to be solved by the invention

[0005] However, in a body-worn device such as Japanese Patent Gazette No. 2016-129526, since multiple metal pins of the body-worn sensor that contacts the arm are protruding outward from the bottom of the body-worn device, there is a problem that the multiple metal pins of the body-worn sensor are corroded or worn due to excessive use, resulting in a decrease in the detection sensitivity of the change in electrostatic capacitance generated by the body.

[0006] An object of the present invention is to provide a detection device capable of ensuring the detection sensitivity of a sensor and a watch including the detection device.

[0007] Technical solutions to solve problems

[0008] The detection device of the present invention comprises: a main body shell, a part of the main surface of which is open; a substrate, which is arranged in the main body shell; a first detection unit, which is arranged below the substrate in the main body shell and detects the user's biological information; a window portion, which is arranged below the first detection unit and corresponds to the opening of the main body shell; and a second detection unit, which is arranged between the substrate and the window portion, and detects whether the machine is in contact with or close to the user's skin via the window portion.

[0009] Effects of the Invention

[0010] According to the present invention, the detection sensitivity of the sensor can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view showing a first embodiment in which the present invention is applied to a wristwatch.

[0012] Figure 2 Observe from 3 points Figure 1 Side view of the watch shown.

[0013] Figure 3 Observed from the bottom Figure 2 Rear view of the watch shown.

[0014] Figure 4 Viewed from the inside of the watch case Figure 3 An enlarged top view of the back cover of the watch shown.

[0015] Figure 5 Yes means Figure 4 An enlarged cross-sectional view of the main part of the rear cover taken along the arrow AA is shown.

[0016] Fig. 6A express Figure 4 An enlarged top view of the sensor substrate is shown. Figure 6B This is an enlarged bottom view.

[0017] Fig. 7A It means from Figure 4 The enlarged plan view shows a state where the sensor substrate is removed from the back cover and a spacer member is arranged on the inner surface of the back cover. Figure 7B This is an enlarged plan view of the back cover showing a state in which the spacer member is further removed from this state.

[0018] Figure 8 This is an enlarged plan view of the back cover viewed from the inner side of the watch case in the second embodiment in which the present invention is applied to the watch.

[0019] Fig. 9 Yes means Figure 8 An enlarged cross-sectional view of the main part of the rear cover taken along the line BB is shown.

[0020] Fig. 10A Yes means Figure 8 An enlarged top view of the sensor substrate is shown. Fig. 10B This is an enlarged bottom view.

[0021] Fig.11A It means from Figure 8 The enlarged plan view shows a state where the sensor substrate is removed from the back cover and a spacer member is arranged on the inner surface of the back cover. Fig. 11B This is an enlarged plan view of the back cover showing a state in which the spacer member is further removed from this state. DETAILED DESCRIPTION

[0022] (First Embodiment)

[0023] Below, refer to Figure 1 7 , a first embodiment in which the present invention is applied to a wristwatch will be described.

[0024] like Figure 1 to Figure 3 As shown, the watch has a watch case 1. Band mounting portions 1a for mounting a watch band 2 are provided at the 12 o'clock side and the 6 o'clock side of the watch case 1, respectively. Switch portions 3 are provided at the 2 o'clock side, the 3 o'clock side, the 4 o'clock side, the 8 o'clock side, and the 10 o'clock side of the watch case 1, for example. However, portions corresponding to a portion of the switch portion 3 may be replaced with charging terminals.

[0025] In addition, if Figure 1 As shown in FIG. 1 , a watch (windproof) glass 4 is provided at the upper opening of the watch case 1 via a glass spacer (not shown). Figure 2 and Figure 3 As shown in the figure, a back cover 5 as a lower windshield member is mounted on the lower part (back side) of the watch case 1 via a waterproof ring (not shown) by a plurality of small screws 5a. The back cover 5 is formed of a metal with high rigidity such as stainless steel or titanium alloy. In addition, the back cover 5 is electrically connected to a circuit board or the like that serves as GND, for example, to prevent the generation of noise, and is maintained at the same potential as GND.

[0026] A watch module (not shown) is provided inside the watch case 1. Although not shown, the watch module is equipped with various components necessary for the watch functions, such as a watch movement that moves a hand to indicate the time, a flat display device that electro-optically displays various information such as the time, date, and day of the week, and a circuit substrate that drives and controls the watch movement and display device.

[0027] However, if Figure 4 and Figure 5 As shown in FIG. 1 , a detection device 6 is provided on the back cover 5 as the lower windshield member of the watch case 1, which detects biological information such as pulse when the watch case 1 is worn on the arm of the body. The detection device 6 is provided corresponding to the window 9 of the back cover 5. In this case, Figure 2 and Figure 5 As shown, a protrusion 5 b protruding downward in a substantially circular shape is provided at a substantially central portion of the rear cover 5 .

[0028] like Figure 4 and Figure 5 As shown in FIG. 1 , a mounting recess 5c for arranging the sensor substrate 7 and the spacer member 8 together is provided in a substantially circular shape on the inner surface (upper surface) of the protruding portion 5b of the protruding rear cover 5. Figure 5As shown in FIG. 7 , a circular window portion 9 through which light passes is provided at the center of the mounting recess 5c. In this case, a through hole 15 is provided in the center of the mounting recess 5c of the rear cover 5, that is, in the center of the protruding portion 5b of the rear cover 5, so as to penetrate from top to bottom. The through hole 15 has a large-diameter hole 15a on the lower side and a small-diameter hole 15b on the upper side. In addition to glass, the window glass 9a may be a transparent or translucent synthetic resin such as polymethyl methacrylate (PMMA), polycarbonate (PC), or ABS resin.

[0029] like Figure 5 As shown in FIG. 1 , the window portion 9 at the center of the protruding portion 5b of the rear cover 5 has a structure in which the window glass 9a is embedded in the large diameter hole 15a of the through hole 15 provided on the protruding portion 5b of the rear cover 5 via the waterproof seal 9b. Thus, the window portion 9 ensures waterproofness and airtightness between the outer peripheral surface of the window glass 9a and the inner peripheral surface of the large diameter hole 15a of the through hole 15 of the rear cover 5 through the waterproof seal 9b, thereby achieving high pressure waterproofing.

[0030] On the other hand, Figure 4 and Figure 5 As shown, the detection device 6 has a sensor substrate 7. The sensor substrate 7 is formed in a substantially circular plate shape. Figure 5 and Fig. 7A As shown in FIG. 1 , the sensor substrate 7 is mounted in the mounting recess 5c provided on the inner surface (the surface serving as the upper surface) of the rear cover 5 via a spacer member 8 having insulating properties such as resin. Thus, the sensor substrate 7 is mounted on the inner surface of the mounting recess 5c of the rear cover 5 in a non-contact state without contacting the rear cover 5 via the spacer member 8. In addition, the spacer member 8 preferably has an adhesive layer on both main surfaces. Thus, the sensor substrate 7 can be fixed with a simple structure and in a space-saving manner.

[0031] like Figure 6B As shown in FIG. 1 , a pulse sensor 10, which is a first detection unit for measuring pulse as biological information, and a body-worn sensor 11, which is a second detection unit for determining whether the watch case 1 is worn on the wrist, are provided on the lower surface of the sensor substrate 7. The pulse sensor 10 includes a light emitting element 10a and a light receiving element 10b, which are provided at a substantially central portion of the lower surface of the sensor substrate 7. The pulse sensor 10 is formed in a substantially rectangular plate shape that is long in the 12 o'clock and 6 o'clock directions, and is arranged corresponding to the window glass 9a of the window portion 9 at a portion corresponding to the small-diameter hole 15b of the through hole 15 provided on the protruding portion 5b of the back cover 5.

[0032] At this time, the light emitting element 10a of the pulse sensor 10 is, for example, Figure 6BAs shown, an LED (Light-Emitting Diode) emitting light of a green wavelength (G) of about 550 nm is provided in an area of ​​about 1 / 4 of the upper side of the roughly rectangular pulse sensor 10. The light receiving element 10b is a photodiode or phototransistor that receives reflected light of the green wavelength light emitted by the light emitting element 10a and irradiated on the arm skin, and is provided in an area of ​​about 3 / 4 of the lower side of the roughly rectangular pulse sensor 10.

[0033] like Figure 5 and Figure 6B As shown, the light emitting element 10a and the light receiving element 10b of the pulse sensor 10 are arranged corresponding to the substantially central portion of the window glass 9a of the window portion 9 at the portion corresponding to the small diameter hole 15b provided in the through hole 15 of the protruding portion 5b of the rear cover 5. Thus, the pulse sensor 10 is configured such that the light emitting element 10a emits light of a green wavelength, and the green wavelength light emitted passes through the window glass 9a of the window portion 9 and is irradiated to the skin of the arm.

[0034] In addition, if Figure 5 and Figure 6B As shown, the pulse sensor 10 is constructed so that, among the green wavelength light irradiated on the skin of the wrist, a part of the light is absorbed by the capillaries in the skin of the wrist, but the remaining light not absorbed by the capillaries is reflected, and the reflected light passes through the window glass 9a of the window portion 9 of the back cover 5 and is received by the light receiving element 10b, and the pulse is measured based on the change in the amount of light received by the received light.

[0035] On the other hand, Figure 5 and Figure 6B As shown, the body-worn sensor 11 is an electrostatic capacitance sensor that detects a change in electrostatic capacitance above a predetermined threshold value caused by contact or proximity with the body. The body-worn sensor 11 is, for example, a copper foil provided in a ring shape around the pulse sensor 10 on the lower surface of the sensor substrate 7. In addition, the body-worn sensor 11 is arranged corresponding to the window glass 9a of the window portion 9 at a position corresponding to the small-diameter hole 15b of the through hole 15 provided on the protruding portion 5b of the back cover 5. In addition, the material of the body-worn sensor 11 is not limited to copper foil, and various metal materials or alloy materials may be used.

[0036] That is, Figure 5As shown, the window glass 9a of the window portion 9 is inserted into the large-diameter hole 15a of the through hole 15 provided on the protruding portion 5b of the back cover 5 via the waterproof seal 9b, so that the outer periphery of the window glass 9a is formed larger than the outer periphery of the body-worn sensor 11. Thus, when the watch case 1 is worn on the wrist and the back cover 5 as a component mounting member is arranged on the wrist, the body-worn sensor 11 detects a change in electrostatic capacitance above a predetermined threshold value caused by the window glass 9a of the window portion 9 at a portion corresponding to the small-diameter hole 15b of the through hole 15 contacting or approaching the body, and detects whether the watch case 1 is worn on the wrist.

[0037] In addition, if Fig. 6A As shown, a plurality of chip components 12 and a connector 13 are provided on the upper surface of the sensor substrate 7. The plurality of chip components 12 are electrically connected to the pulse sensor 10 via a wiring pattern (not shown) formed on the sensor substrate 7 and via a through hole (not shown) provided on the sensor substrate 7. Thus, the plurality of chip components 12 drive the light emitting element 10a of the pulse sensor 10, obtain the change in the amount of light received by the light receiving element 10b as pulse information, and perform arithmetic processing based on the obtained pulse information to calculate the pulse.

[0038] In addition, if Fig. 6A As shown, these multiple chip components 12 are electrically connected to the connector 13 provided on the upper surface of the sensor substrate 7 through a wiring pattern (not shown) formed on the sensor substrate 7. Thus, the pulse sensor 10 is electrically connected to the connector 13 via the multiple chip components 12. Fig. 6A and Figure 6B As shown, the body-worn sensor 11 is electrically connected to a connector 13 provided on the upper surface of the sensor substrate 7 through a wiring pattern (not shown) formed on the sensor substrate 7 via a through hole (not shown) provided on the sensor substrate 7 .

[0039] The connector 13 is electrically connected to a circuit board for a watch module (not shown) provided in the watch case 1 via a flexible wiring board (not shown). Thus, the watch module is configured to be electrically connected to the circuit board for the watch module via a flat display device (not shown), and the pulse information detected by the pulse sensor 10 is electro-optically displayed as a pulse rate on the flat display device.

[0040] At this time, if Figure 5 and Fig. 7AAs shown in FIG. 1 , a spacer 8 is disposed between the sensor substrate 7 and the back cover 5. The spacer 8 is formed of, for example, an insulating synthetic resin in a disk shape having substantially the same size as the sensor substrate 7. The spacer 8 is provided with a sensor insertion hole 8a, into which a portion of the pulse sensor 10 and the body-worn sensor 11 are inserted so that the pulse sensor 10 and the portion of the body-worn sensor 11 are opposed to the window portion 9 of the back cover 5. The sensor insertion hole 8a is formed in substantially the same rectangular shape as the pulse sensor 10 including a portion of the body-worn sensor 11, and penetrates the upper and lower surfaces of the spacer 8.

[0041] At this time, if Figure 5 As shown, when the pulse sensor 10 is arranged in the sensor insertion hole 8a of the spacer member 8, it is inserted into the small-diameter hole 15b of the through hole 15 provided in the protruding portion 5b of the rear cover 5, and arranged in a state where the lower surface of the pulse sensor 10 is in contact with or close to the inner surface (upper surface) of the window glass 9a of the window portion 9. In addition, when the pulse sensor 10 is arranged in the sensor insertion hole 8a of the spacer member 8, the body-worn sensor 11 is in contact with the upper surface of the spacer member 8 except for the part of the body-worn sensor 11 inserted into the sensor insertion hole 8a.

[0042] Therefore, if Figure 5 As shown, the body-worn sensor 11 does not contact the window glass 9a via the insulating spacer 8, and is arranged to correspond to the small-diameter hole 15b of the through hole 15 of the window portion 9 of the rear cover 5, rather than being in a non-contact state with the rear cover 5 and facing the main surface (the electric field is not blocked by the rear cover 5). As a result, the body-worn sensor 11 can detect changes in electrostatic capacitance above a predetermined threshold value caused by contact or proximity with the body, etc., even if the rear cover 5 is formed of metal such as stainless steel or titanium alloy.

[0043] Next, a case where the wristwatch according to the first embodiment is used will be described.

[0044] The watch of the first embodiment is usually worn on the arm by wearing the watch case 1. In this case, the time, day of the week, date and other information can be viewed through the watch glass 4 via the watch module (not shown) in the watch case 1. In this state, when detecting biological information such as pulse using the detection device 6, first, the watch is set to the detection mode by selecting any one of the multiple switch parts 3 and performing a switch operation.

[0045] In this state, when the detection device 6 starts detection, first, the body-worn sensor 11 of the detection device 6 detects a change in electrostatic capacitance above a predetermined threshold value caused by contact or proximity with the body through the window portion 9 of the back cover 5, and determines whether the watch case 1 is worn on the arm. At this time, if the body-worn sensor 11 determines that the watch case 1 is not worn on the arm, the pulse sensor 10 does not measure the pulse, thereby preventing useless power consumption. In addition, when the body-worn sensor 11 determines that the watch case 1 is worn on the arm, the pulse sensor 10 of the detection device 6 starts measuring the pulse.

[0046] When the pulse sensor 10 starts measuring the pulse, the light emitting element 10a of the pulse sensor 10 emits light of a green wavelength, and the emitted green wavelength light passes through the window glass 9a of the window portion 9 provided on the back cover 5 and irradiates the skin of the arm. A part of the irradiated green wavelength light is absorbed by the capillaries in the skin of the arm, but the remaining light not absorbed by the capillaries is reflected.

[0047] The reflected light passes through the window glass 9a of the window portion 9 of the back cover 5 and is received by the light receiving element 10b of the pulse sensor 10. Based on the change in the amount of light received by the light receiving element 10b, the control unit (not shown) located on the pulse sensor 10 and the circuit substrate for the watch module performs arithmetic processing to calculate the pulse. The pulse information calculated in this way is sent to the circuit substrate for the watch module (not shown) provided in the watch case 1 through the connector 13 and the flexible wiring substrate (not shown), and is displayed as the pulse number on the display device (not shown) of the watch module.

[0048] Thus, the detection device 6 of the watch according to the first embodiment comprises: a main body case, i.e., a watch case 1, of which at least a portion of the main surface opposite to the user's skin is open when the user uses it; a sensor substrate 7 arranged in the watch case 1; a pulse sensor 10 as a first detection unit for detecting biological information, arranged below the sensor substrate 7 in the watch case 1; a window portion 9 arranged below the pulse sensor 10 and corresponding to the opening of the watch case 1; and a second detection unit, i.e., a body-worn sensor 11, arranged between the sensor substrate 7 and the window portion 9, for detecting whether the watch is in contact with or close to the user's skin via the window portion 9, thereby ensuring the detection sensitivity of the body-worn sensor 11 as the second detection unit.

[0049] That is, in the detection device 6 of the watch, since the body-worn sensor 11 is arranged so as not to be exposed outside the back cover 5, it is possible to prevent corrosion or wear of the body-worn sensor 11, and to ensure the detection sensitivity of the body-worn sensor 11. In addition, the waterproof structure is not complicated, and the waterproof property can be ensured with a simple waterproof structure. Since the body-worn sensor 11 detects whether the back cover 5 is worn on the body through the window portion 9 of the back cover 5, the body-worn sensor 11 can be arranged corresponding to the window portion 9 of the back cover 5 in a non-contact state with respect to the back cover 5.

[0050] Therefore, in the detection device 6 of the watch, even if the back cover 5 is formed of metal, it is possible to reliably and well detect whether the back cover 5 is worn on the body through the body-worn sensor 11 corresponding to the window portion 9. As a result, the pulse sensor 10 can measure the pulse only when the back cover 5 is worn on the body, thereby preventing wasteful power consumption.

[0051] At this time, in the detection device 6 of the watch, since the window portion 9 of the back cover 5 is a structure in which the window glass 9a and the waterproof seal 9b are embedded in the through hole 15 provided on the back cover 5, the waterproof structure is simple and the waterproof property can be ensured. That is, the through hole 15 of the back cover 5 has a large diameter hole 15a on the lower side and a small diameter hole 15b on the upper side, and the window glass 9a is embedded in the large diameter hole 15a on the lower side via the waterproof seal 9b, so the waterproof property of the window portion 9 can be ensured by the waterproof seal 9b.

[0052] In addition, in the detection device 6 of the watch, the body-worn sensor 11 is an electrostatic capacitance sensor that detects changes in electrostatic capacitance generated by the body. Therefore, even if the back cover 5 is formed of metal, the body-worn sensor 11 provided corresponding to the window glass 9a of the window portion 9 of the back cover 5, that is, the window glass 9a at a position corresponding to the small-diameter hole 15b of the through hole 15, can reliably detect changes in electrostatic capacitance above a specified threshold value caused by the contact or proximity of the window portion 9 of the back cover 5 with the body. Therefore, the body-worn sensor 11 can correctly and well determine whether the back cover 5 of the watch case 1 is worn on the arm.

[0053] Furthermore, in the detection device 6 of the watch, the back cover 5 serving as a parts mounting member is formed of a metal such as stainless steel or titanium alloy, thereby ensuring the rigidity of the back cover 5, thereby improving the overall strength of the watch case 1, thereby ensuring impact resistance and waterproofness. Furthermore, even if the back cover 5 is formed of metal, it is possible to reliably and satisfactorily determine whether the back cover 5 of the watch case 1 is worn on the body by utilizing the body sensor 11 arranged corresponding to the window glass 9a at a position corresponding to the small-diameter hole 15b of the through hole 15 in the window portion 9 of the back cover 5.

[0054] Furthermore, in the detection device 6 of the watch, by providing the body-worn sensor 11 on the sensor substrate 7, even if the back cover 5 is formed of metal, the body-worn sensor 11 can be arranged corresponding to the window portion 9 of the back cover 5 in a non-contact state with respect to the back cover 5. Thus, a change in electrostatic capacitance above a predetermined threshold value caused by the contact or proximity of the body-worn sensor 11 to the body can be well detected, and therefore, whether the back cover 5 of the watch case 1 is worn on the body can be reliably and well determined by the body-worn sensor 11.

[0055] In this case, in the detection device 6 of the watch, by surrounding the pulse sensor 10 with the body-worn sensor 11, it is possible to reliably and well detect changes in electrostatic capacitance above a predetermined threshold value caused by contact or proximity between the body-worn sensor 11 and the body, without affecting the pulse measurement of the body by the pulse sensor 10. Thus, the pulse sensor 10 can accurately detect the pulse of the body, and it is possible to reliably detect whether the back cover 5 is worn on the body through the window portion 9 of the back cover 5.

[0056] Furthermore, in the detection device 6 of the watch, an insulating spacer component 8 is arranged between the back cover 5 as a parts mounting component and the sensor substrate 7, and a sensor insertion hole 8a is provided by inserting the pulse sensor 10 into the spacer component 8 so as to correspond the pulse sensor 10 with the window portion 9. This can reliably prevent the body-worn sensor 11 from contacting the back cover 5 through the spacer component 8, and can make the body-worn sensor 11 correspond well to the glass 9 at the portion corresponding to the small-diameter hole 15b of the through hole 15 of the window portion 9 of the back cover 5, thereby correctly and well detecting the change in electrostatic capacitance generated on the body by the body-worn sensor 11.

[0057] At this time, in the detection device 6 of the watch, since the pulse sensor 10 can be inserted into the sensor insertion hole 8a of the spacer component 8, the light-emitting element 10a and the light-receiving element 10b of the pulse sensor 10 can be inserted into the small-diameter hole 15b of the through hole 15 of the window portion 9 of the back cover 5, and the window glass 9a at the portion corresponding to the small-diameter hole 15b can be reliably and well corresponded. As a result, the pulse can be accurately and well measured by the light-emitting element 10a and the light-receiving element 10b of the pulse sensor 10.

[0058] Furthermore, in the detection device 6 of the watch, the body-worn sensor 11 is electrically connected to the connector 13 provided on the upper surface of the sensor substrate 7 through a wiring pattern (not shown) provided on the sensor substrate 7, thereby enabling the body-worn sensor 11 provided on the lower surface of the sensor substrate 7 and the connector 13 provided on the upper surface of the sensor substrate 7 to be electrically connected reliably and well.

[0059] In this case, in the detection device 6 of the watch, the pulse sensor 10 is connected to a plurality of chip components 12 arranged on the upper surface of the sensor substrate 7 through a wiring pattern (not shown) arranged on the sensor substrate 7, and these plurality of chip components 12 are electrically connected to the connector 13, thereby enabling the pulse sensor 10 arranged on the lower surface of the sensor substrate 7 and the connector 13 arranged on the upper surface of the sensor substrate 7 to be reliably and well electrically connected.

[0060] Therefore, in the detection device 6 of the watch, the connector 13 of the sensor substrate 7 electrically connected to the body-worn sensor 11 and the pulse sensor 10 can be reliably electrically connected to the circuit substrate for the watch module (neither of which is shown in the figure) in the watch case 1 through the flexible wiring substrate (not shown). As a result, the pulse measurement performed by the pulse sensor 10 can be indicated by the body-worn sensor 11, and the pulse information (pulse rate) measured by the pulse sensor 10 can be well displayed on the display device (not shown) of the watch module.

[0061] In addition, in the first embodiment described above, the case where the body-worn sensor 11 is provided on the lower surface of the sensor substrate 7 is described, but the present invention is not limited thereto, and the body-worn sensor 11 may be provided on the upper surface of the sensor substrate 7. In this case, the body-worn sensor 11 may be provided on the upper surface of the sensor substrate 7 in a manner corresponding to the window portion 9 while surrounding the pulse sensor 10.

[0062] (Second Embodiment)

[0063] Next, refer to Figure 8 to Figure 1 1, a second embodiment of the present invention applied to a wristwatch is described. Figure 1 The same parts as those in the first embodiment shown in FIG. 7 are denoted by the same reference numerals and described below.

[0064] like Fig. 9 and Fig. 11B As shown, the watch has a structure in which a body-worn sensor 21 of a detection device 20 is provided on a window portion 9 of a back cover 5, and other than that, the structure is substantially the same as that of the first embodiment.

[0065] That is, the body-worn sensor 21 is a capacitance sensor that detects changes in capacitance generated in the body, similar to the first embodiment. Fig. 9 and Fig. 11B As shown, the body-worn sensor 21 is a copper foil provided in a corresponding ring shape on the inner surface (upper surface) of the window glass 9a at a portion corresponding to the small-diameter hole 15b of the through hole 15 of the window portion 9 so as to surround the pulse sensor 10. In addition, the material of the body-worn sensor 21 is not limited to copper foil, and various metal materials or alloy materials may be used.

[0066] At this time, the window glass 9a is Fig. 9 and Fig. 11B As shown, the body-worn sensor 21 is formed of insulating glass into a disk shape of a size that can be inserted into the large-diameter hole 15a of the through hole 15 via the waterproof seal 9b. Thus, the body-worn sensor 21 is provided in a ring shape along the circumference of the upper surface of the window glass 9a at a portion corresponding to the small-diameter hole 15b of the through hole 15, with a size that surrounds the circumference of the pulse sensor 10.

[0067] In this case, if Fig. 9 and Fig. 10B As shown in the figure, on the lower surface of the sensor substrate 7 on which the pulse sensor 10 is mounted, a connection member 22 is provided corresponding to the body-worn sensor 21 provided on the window portion 9 of the rear cover 5. The connection member 22 is a spring member such as a leaf spring, and is arranged on the upper side of the pulse sensor 10. Thus, when the sensor substrate 7 is arranged on the inner surface (upper surface) of the mounting recess 5c of the rear cover 5, the connection member 22 elastically contacts the body-worn sensor 21 and is electrically connected to the body-worn sensor 21.

[0068] In addition, if Fig. 9 As shown in FIG10 , the connection member 22 is electrically connected to a connector 13 provided on the upper surface of the sensor substrate 7 via a wiring pattern (not shown) formed on the sensor substrate 7 and via a through hole (not shown) provided on the sensor substrate 7. The connector 13 is electrically connected to a circuit substrate for a watch module (not shown) in the watch case 1 via a flexible wiring substrate (not shown) as in the first embodiment.

[0069] In addition, if Fig. 9 and Fig.11A As shown in the figure, a spacer member 8 is arranged between the sensor substrate 7 and the rear cover 5. The spacer member 8 is the same as the first embodiment, and is formed of, for example, a synthetic resin having insulating properties into a disk shape having substantially the same size as the sensor substrate 7. The spacer member 8 is provided with a component insertion hole 8b for inserting the pulse sensor 10 and the connecting member 22 corresponding to the window portion 9 of the rear cover 5. The component insertion hole 8b is a rectangular shape substantially the same as the shape of both the pulse sensor 10 and the connecting member 22, and is formed by penetrating the upper and lower surfaces of the spacer member 8.

[0070] In this case, if Fig. 9As shown in FIG. 1 , when the pulse sensor 10 and the connecting member 22 are arranged in the component insertion hole 8 b of the spacer member 8, the body-worn sensor 21 elastically abuts against the connecting member 22 and is electrically connected, and in this state, does not contact the rear cover 5 and is arranged in a non-contact state relative to the rear cover 5. Thus, even if the rear cover 5 is formed of a metal such as stainless steel or titanium alloy, the body-worn sensor 11 can detect a change in electrostatic capacitance above a predetermined threshold value caused by contact or proximity with the body without being affected by the rear cover 5.

[0071] Next, a case where the wristwatch according to the second embodiment is used will be described.

[0072] The watch of the second embodiment is the same as the first embodiment, and is usually worn on the arm. In this case, the time, day of the week, date and other information can also be viewed through the watch glass 4 via the watch module (not shown) in the watch case 1. In this state, when detecting biological information such as pulse by the detection device 20, first, the watch is set to the detection mode by selecting any one of the multiple switch parts 3 to perform a switch operation.

[0073] In this state, when the detection device 20 starts detection, first, the body-worn sensor 21 of the detection device 20 detects a change in electrostatic capacitance above a predetermined threshold value caused by contact or proximity with the body through the window portion 9 of the back cover 5, and determines whether the watch case 1 is worn on the arm. At this time, when the body-worn sensor 21 determines that the watch case 1 is not worn on the arm, the pulse sensor 10 does not measure the pulse, thereby preventing useless power consumption. In addition, when the body-worn sensor 21 determines that the watch case 1 is worn on the arm, the pulse sensor 10 of the detection device 20 starts measuring the pulse.

[0074] When the pulse sensor 10 starts measuring the pulse, the light emitting element 10a of the pulse sensor 10 emits green wavelength light, as in the first embodiment, and the emitted green wavelength light passes through the window glass 9a of the window portion 9 provided on the back cover 5 and irradiates the skin of the arm. A part of the irradiated green wavelength light is absorbed by the capillaries in the skin of the arm, but the remaining light not absorbed by the capillaries is reflected.

[0075] The reflected light is received by the light receiving element 10b of the pulse sensor 10 through the window glass 9a of the window portion 9 of the back cover 5, as in the first embodiment. The pulse is calculated by a control unit (not shown) located on the circuit substrate for the watch module based on the change in the amount of light received by the light receiving element 10b. The pulse information calculated in this way is sent to the circuit substrate for the watch module (not shown) provided in the watch case 1 through the connector 13 and the flexible wiring substrate (not shown), and is displayed as the pulse number on the display device (not shown) of the watch module.

[0076] Thus, according to the detection device 20 of the watch of the second embodiment, there is provided: a main body case, i.e., a watch case 1, of which at least a portion of the main surface opposite to the user's skin is open when the user uses it; a sensor substrate 7 arranged in the watch case 1; a pulse sensor 10 arranged below the sensor substrate 7 in the watch case 1 and serving as a first detection unit for detecting biological information; a window portion 9 arranged below the pulse sensor 10 and corresponding to the opening of the watch case 1; a body-worn sensor 21 arranged on the window portion 9 and serving as a second detection unit for detecting whether the watch is in contact with or close to the user's skin via the window portion 9; thereby, as in the first embodiment, the detection sensitivity of the body-worn sensor 21 serving as the second detection unit can be ensured.

[0077] That is, in the detection device 20 of the watch, as in the first embodiment, since the body-worn sensor 21 is configured not to be exposed to the outside of the back cover 5, the waterproof structure does not become complicated, and the waterproof property can be ensured with a simple waterproof structure. Moreover, by setting the body-worn sensor 21 on the window portion 9 of the back cover 5, the body-worn sensor 21 can be configured in a non-contact state relative to the back cover 5.

[0078] Therefore, in the detection device 20 of the watch, as in the first embodiment, even if the back cover 5 is formed of metal, the body-worn sensor 21 provided on the window portion 9 of the back cover 5 can reliably detect the change in electrostatic capacitance above a predetermined threshold value caused by the contact or proximity of the window portion 9 of the back cover 5 with the body, so it is possible to reliably and well detect whether the back cover 5 is worn on the body, and thus, as in the first embodiment, the pulse sensor 10 measures the pulse only when the back cover 5 is worn on the body, so wasteful power consumption can be prevented. In addition, compared with the first embodiment, since the distance between the body-worn sensor 21 and the body becomes closer, the change in electrostatic capacitance can be detected with higher accuracy.

[0079] At this time, in the detection device 20 of the watch, as in the first embodiment, the window portion 9 of the back cover 5 is a structure in which the window glass 9a and the waterproof seal 9b are embedded in the through hole 15 provided on the back cover 5, so the waterproof structure is simple and waterproofness can be ensured. That is, the through hole 15 of the back cover 5 has a large diameter hole 15a on the lower side and a small diameter hole 15b on the upper side, and the window glass 9a is embedded in the large diameter hole 15a on the lower side via the waterproof seal 9b, so the waterproofness of the window portion 9 can be ensured by the waterproof seal 9b.

[0080] Furthermore, in the detection device 20 of the watch, since the body-worn sensor 21 is arranged correspondingly on the window glass 9a of the window portion 9 of the back cover 5 so as to surround the pulse sensor 10, the pulse sensor 10 can correspond to the window glass 9a at the portion corresponding to the small-diameter hole 15b of the through hole 15 of the window portion 9 of the back cover 5, and can well measure the pulse. Even if the back cover 5 is formed of metal, it will not affect the pulse measurement of the body by the pulse sensor 10, and can well detect changes in electrostatic capacitance above a specified threshold value caused by the body-worn sensor 11 contacting or approaching the body.

[0081] Furthermore, in the detection device 20 of the watch, an insulating spacer component 8 is arranged between the back cover 5 as a component mounting component and the sensor substrate 7, and a component insertion hole 8b corresponding to the window portion 9 is provided in the spacer component 8, into which the pulse sensor 10 is inserted together with the connecting component 22. Thus, the pulse sensor 10 can be arranged corresponding to the window portion 9 of the back cover 5, and the body-worn sensor 21 does not contact the back cover 5, so that the body-worn sensor 21 and the connecting component 22 can be reliably and well connected.

[0082] Thus, in the detection device 20 of the watch, the pulse sensor 10 can be reliably and well aligned with the window glass 9a at the position corresponding to the small-diameter hole 15b of the through hole 15 of the window portion 9 of the back cover 5 through the part insertion hole 8b of the spacer member 8, so that the pulse can be accurately measured using the pulse sensor 10, and changes in electrostatic capacitance above a specified threshold value caused by contact or proximity of the body-worn sensor 21 to the body can be reliably and well detected.

[0083] In addition, in the detection device 20 of the watch, a connecting component 22 electrically connected to the body-worn sensor 21 is provided on the lower surface of one side of the sensor substrate 7. Thus, even if the body-worn sensor 21 is provided on the window portion 9 of the back cover 5, when the sensor substrate 7 is arranged on the inner surface (upper surface) of the mounting recess 5c of the back cover 5, the connecting component 22 can be brought into contact with the body-worn sensor 21, and the body-worn sensor 21 can be electrically connected to the sensor substrate 7 through the connecting component 22.

[0084] Furthermore, in the detection device 20 of the wristwatch, since the connection component 22 is electrically connected to the connector 13 provided on the upper surface of the sensor substrate 7 through a wiring pattern (not shown) provided on the sensor substrate 7, the body-worn sensor 21 provided on the window portion 9 of the back cover 5 can be electrically connected to the connector 13 provided on the upper surface of the sensor substrate 7 reliably and well through the connection component 22. In this case, as in the first embodiment, a plurality of chip components 12 provided on the upper surface of the sensor substrate 7 and electrically connected to the pulse sensor 10 are connected to the connector 13.

[0085] Therefore, in the detection device 20 of the watch, the connector 13 of the sensor substrate 7 that electrically connects the body-worn sensor 21 and the pulse sensor 10 can be electrically connected to the circuit substrate for the watch module (neither of which is shown in the figure) in the watch case 1 via a flexible wiring substrate (not shown). As a result, the pulse measurement performed by the pulse sensor 10 can be indicated by the body-worn sensor 21, and the pulse information (pulse rate) measured by the pulse sensor 10 can be well displayed on the display device (not shown) of the watch module.

[0086] Furthermore, in the second embodiment described above, the connection member 22 is described as a spring member such as a leaf spring, but the present invention is not limited thereto, and for example, a spring member such as a coil spring may be used.

[0087] In addition, in the above-mentioned first embodiment and second embodiment, the case of using the pulse sensor 10 for detecting the pulse as the biosensor is described, but the present invention is not limited to this. For example, it may also be an oxygen saturation sensor that optically detects the oxygen saturation of the body, etc. In short, any biosensor that optically detects biological information will suffice.

[0088] In the first and second embodiments described above, the body-worn sensors 11 and 21 are capacitance sensors that detect changes in capacitance of the body, but the present invention is not limited thereto, and may be, for example, optical sensors or ultrasonic sensors.

[0089] Furthermore, in the above-mentioned first embodiment and second embodiment, the case where the invention is applied to a wristwatch is described, but the invention does not necessarily have to be applied to a wristwatch, and can be applied to a body-worn device that is worn on the body such as an arm.

[0090] In addition, in the above-mentioned first and second embodiments, the case where the part mounting component is the back cover 5 of the watch case 1 is described, but the present invention does not necessarily have to be the back cover 5 of the watch case 1, and it can also be the case of a body wearable device, etc.

[0091] Furthermore, in the first and second embodiments described above, the case where the invention is applied to a watch is described, but the invention is not limited thereto and may also be applied to a smart watch, a smart phone, smart glasses, a band-type device, and the like.

Claims

1. A detection device, characterized in that: have: A main body shell, a portion of a main surface of which is open; A substrate, which is arranged in the main housing; a first detection unit, which is disposed below the substrate in the main housing and detects biological information of the user; a window portion, which is arranged below the first detection portion and corresponds to the opening of the main body shell; as well as The second detection unit is disposed between the substrate and the window portion, and detects whether the device is in contact with or close to the skin of the user via the window portion.

2. The detection device according to claim 1, characterized in that: The main body housing includes a lower windshield member having the main surface facing the skin of the user at the lower part, The lower windshield member is formed of metal.

3. The detection device according to claim 1, characterized in that: The second detection portion is disposed on the lower surface of the substrate.

4. The detection device according to claim 1, characterized in that: The second detection portion is disposed on one side of the first detection portion.

5. The detection device according to claim 4, characterized in that: The second detection portion surrounds the first detection portion.

6. The detection device according to claim 5, characterized in that: The first detection portion is in contact with the substrate at the top and in contact with the window portion at the bottom. The second detection portion surrounds the first detection portion.

7. The detection device according to claim 2, characterized in that: An insulating spacer member is arranged between the lower windshield member and the substrate. The spacer member has an insertion hole corresponding to the window portion and into which the first detection portion is inserted.

8. The detection device according to claim 2, characterized in that: The second detection portion is provided on an upper surface of the window portion.

9. The detection device according to claim 8, characterized in that: The second detection portion surrounds the first detection portion in a plan view from below the main body housing.

10. The detection device according to claim 8, characterized in that: A connection member is further provided for electrically connecting the one surface of the substrate and the second detection unit.

11. The detection device according to claim 10, characterized in that: An insulating spacer member is arranged between the lower windshield member and the substrate. The spacer member has an insertion hole corresponding to the window portion and into which the first detection portion and the connection member are inserted.

12. The detection device according to claim 1, characterized in that: The first detection unit is a pulse sensor including a light emitting unit and a light receiving unit, and detects a pulse.

13. The detection device according to claim 1, characterized in that: The second detection unit is a capacitance sensor that detects a change in capacitance caused by contact or proximity with the skin of the user.

14. The detection device according to claim 13, characterized in that: The second detection portion is formed of metal.

15. The detection device according to claim 1, characterized in that: When the user uses the device, the window, the first detection unit, and the second detection unit face the user's skin.

16. A table, characterized in that A detection device according to claim 1.

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