Detection device

Abstract

To provide a detection device that enables size reduction of a ring-shaped housing and can improve convenience.SOLUTION: A detection device 1 includes: a ring-shaped housing 200 having a light source 50, an optical sensor 6, a control circuit 10, a first power circuit, and a first battery 8, and charging the first battery 8 with power from a charger; and a terminal part 250 having an attachment / detachment apparatus mounted to the outside of the housing 200 in a detachable manner and capable of charging the first battery 8 from the attachment / detachment apparatus.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] There are known devices for detecting biometric information from the human body. For example, Patent Document 1 discloses a ring-shaped authentication device that includes an antenna and is powered by radio waves transmitted from an access target. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-93368 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional ring-shaped devices incorporate electronic devices such as a sensor, light source, battery, controller, and antenna into a single housing, which results in a large ring-shaped housing and poor fit. In addition, conventional ring-shaped devices cannot function while they are set on a charger, which results in a problem of interrupted acquisition of biological information.

[0005] An object of the present invention is to provide a detection device that allows the ring-shaped housing to be made smaller and that can be made more convenient. [Means for solving the problem]

[0006] A detection device of one embodiment of the present invention has a light source, a photosensor, a control circuit, a first power supply circuit, and a first battery, and is equipped with a ring-shaped housing that charges the first battery with power from a charger, and a detachable device that is detachably attached to the outside of the housing and a terminal portion that can charge the first battery from the detachable device. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram showing an example of the external appearance of a detection device according to an embodiment in a state where a finger is placed inside the detection device. [Diagram 2] FIG. 2 is a schematic diagram showing an example of removing the attachment / detachment device of the detection device according to the embodiment. [Diagram 3] FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG. [Figure 4] FIG. 4 is a block diagram showing an example of the configuration of a detection device. [Diagram 5] FIG. 5 is a perspective view showing an example of a detachable device that is detachably attached to the detection device. [Figure 6] FIG. 6 is a diagram for explaining an example of charging between the detection device and the charger. [Figure 7] FIG. 7 is a diagram showing an example of the configuration of a charger. [Figure 8] FIG. 8 is a diagram for explaining an example of charging the detection device. [Figure 9] FIG. 9 is a diagram for explaining an example of the operation of the detection device. [Figure 10] FIG. 10 is a perspective view showing an example of a charging stand equipped with a plurality of chargers. [Figure 11] FIG. 11 is a schematic cross-sectional view taken along line BB shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The form (embodiment) for carrying out the invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiment. The components described below include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the components described below can be appropriately combined. Note that the disclosure is merely an example, and those that a person skilled in the art can easily imagine appropriate modifications while maintaining the gist of the invention are naturally included in the scope of the present invention. In addition, in order to make the explanation clearer, the drawings may be schematic in terms of the width, thickness, shape, etc. of each part compared to the actual embodiment, but they are merely examples and do not limit the interpretation of the present invention. In addition, in this specification and each figure, elements similar to those described above with respect to the previous figures may be given the same reference numerals, and detailed explanations may be omitted as appropriate.

[0009] In this specification and the claims, when expressing an aspect of arranging another structure on top of a certain structure, the term "on top" is used, unless otherwise specified, to include both a case in which another structure is arranged directly on top of a certain structure so as to be in contact with the certain structure, and a case in which another structure is arranged above a certain structure via yet another structure.

[0010] (Embodiment) [Detection device configuration example] FIG. 1 is a schematic diagram showing an external appearance example of a state where a finger is placed inside the detection device according to the embodiment. FIG. 2 is a schematic diagram showing an example of removing a removable device of the detection device according to the embodiment. FIG. 3 is a cross-sectional schematic diagram of the AA cross section shown in FIG. 2. FIG. 3 shows a cross section of the detection device 1 of FIG. 2 cut along a plane perpendicular to the center line passing through the center of the hollow part. FIG. 4 is a block diagram showing a configuration example of the detection device. FIG. 5 is a perspective view showing an example of a removable device that can be freely attached to and detached from the detection device.

[0011] The detection device 1 shown in Figs. 1 and 2 is a ring-shaped device that can be attached to and detached from the human body, and is worn on a finger Fg of the human body. The finger Fg includes the thumb, index finger, middle finger, ring finger, little finger, etc. The human body is a person to be authenticated for identity verification by the detection device 1. The detection device 1 can detect biometric information related to a living body from the finger Fg on which it is worn. The finger Fg is an example of a measurement target. The measurement target is a living body or a part of a living body, and is a measurement target. The detection device 1 is made into a ring or a wristband, making it easy for a user to carry it around. In the following description, it is assumed that the detection device 1 is used as a ring.

[0012] As shown in FIG. 2, the detection device 1 includes a ring-shaped housing 200, a terminal unit 250 that holds a detachable device 500 on the housing 200, and the detachable device 500 held by the terminal unit 250. In this embodiment, when the housing 200 is attached to a finger Fg, the detection device 1 has a first state (see FIG. 1) in which the detachable device 500 is attached to the housing 2000, and a second state (see FIG. 2) in which the detachable device 500 is detached from the housing 2000. The detection device 1 can be used in the first state and the second state. The detachable device 500 complements the function of the detection device 1 and functions as a gadget that can charge the detection device 1.

[0013] The housing 200 is worn with a finger Fg inserted into the hollow portion 201 and in contact with the finger Fg. The housing 200 has an inner circumferential surface 210 formed of a light-transmitting member, and is configured so that light emitted by the light source 50 housed inside can be emitted from the inner circumferential surface 210 toward the hollow portion 201. The housing 200 has an outer circumferential surface 220 formed of a member such as a metal or a non-transmitting synthetic resin, and is configured so that light emitted by the light source 50 housed inside cannot be emitted from the outer circumferential surface 220 to the outside. The housing 200 may be configured so that the optical sensor 6 is exposed from the inner circumferential surface 210, or may be configured so that the optical sensor 6 is housed near the inner circumferential surface 210.

[0014] The terminal portion 250 is formed in a cylindrical convex shape protruding from the outer peripheral surface 220 of the housing 200. In this embodiment, the housing 200 is formed with a contact portion 230 that is a part of the outer peripheral surface 220 that is flattened so that the housing 200 can come into contact with the outer surface of the removable device 500. The terminal portion 250 is formed as a protrusion that protrudes from the center portion of the contact portion 230 of the housing 200. As a result, the detection device 1 increases the contact area between the housing 200 and the removable device 500, and therefore the stability between the housing 200 and the removable device 500 when attached can be improved without increasing the size of the terminal portion 250.

[0015] 3, the housing 200 has a temperature sensor 3, an acceleration sensor 4, a memory 5, an optical sensor 6, a communication circuit 7, a first battery 8, a control circuit 10, a light source 50, and a connector 251. These components are mounted on a flexible substrate 20. These components can exchange signals with each other via the flexible substrate 20. The housing 200 accommodates the temperature sensor 3, the acceleration sensor 4, the memory 5, the optical sensor 6, the communication circuit 7, the first battery 8, the control circuit 10, and the light source 50 inside.

[0016] The light source 50 can use multiple types of LEDs (Light Emitting Diodes). In this embodiment, the light source 50 has a red LED 51, a near-infrared LED 52, and a green LED 53. The red LED 51 outputs red light. The near-infrared LED 52 outputs near-infrared light. The green LED 53 outputs green light. The light source 50 drives the red LED 51, the near-infrared LED 52, and the green LED 53 by an LED driver 54 (not shown) to emit light.

[0017] The optical sensor 6 detects light emitted by the light source 50 and reflected by the finger Fg, etc., and directly incident light. The optical sensor 6 is an organic photodiode (OPD). The optical sensor 6 receives as input light that is output from the red LED 51, near-infrared LED 52, and green LED 53 and passes through the finger Fg inserted in the hollow portion 201. The optical sensor 6 detects changes in the intensity of the input light. The optical sensor 6 is, for example, an organic photodiode (OPD), and outputs an electrical signal according to the irradiated light.

[0018] When the red LED 51 is lit and the near-infrared LED 52 and the green LED 53 are not lit, the red light that has passed through the finger is input to the optical sensor 6. When the near-infrared LED 52 is lit and the red LED 51 and the green LED 53 are not lit, the near-infrared light that has passed through the finger is input to the optical sensor 6. When the green LED 53 is lit and the red LED 51 and the near-infrared LED 52 are not lit, the green light that has passed through the finger is input to the optical sensor 6.

[0019] The light emitted from the light source 50 is reflected by the surface of the object to be detected such as a finger Fg and enters the optical sensor 6. This allows the detection device 1 to detect a fingerprint by detecting the shape of the projections and recesses on the surface of the finger Fg. Alternatively, the light emitted from the light source 50 may be reflected inside the finger Fg or transmitted through the finger Fg and enter the optical sensor 6. This allows the detection device 1 to detect information about a living body inside the finger Fg. The information about a living body is, for example, a pulse wave, a pulse rate, a blood vessel image, etc. of a finger or a palm. That is, the detection device 1 may be configured as a fingerprint detection device that detects a fingerprint, or a vein detection device that detects a blood vessel pattern such as a vein.

[0020] The temperature sensor 3 detects the temperature of the finger Fg when the finger Fg is inserted into the hollow portion 201. The temperature sensor 3 detects the temperature of the surrounding environment of the housing 200 when the finger Fg is not inserted into the hollow portion 201. The temperature sensor 3 supplies information indicating the detected temperature to the control circuit 10.

[0021] The acceleration sensor 4 detects the acceleration applied to the detection device 1. The acceleration sensor 4 supplies information indicating the detected acceleration to the control circuit 10. The detected value of the acceleration can be used to remove the influence of the body movement of the person wearing the detection device 1.

[0022] The communication circuit 7 has an antenna for short-distance wireless communication (not shown). The communication circuit 7 transmits and receives signals between the detection device 1 and other devices. The communication circuit 7 can transmit data measured in each part of the detection device 100 to other devices. The communication circuit 7 can also receive data transmitted by other devices. The other devices are, for example, mobile terminals such as smartphones and tablets carried by the user of the detection device 100. Mobile terminals such as smartphones and tablets have a display screen. By displaying data from the detection device 1 on the screen, the user of the detection device 1 can check the data received from the detection device 1.

[0023] The first battery 8 is, for example, a secondary battery. The first battery 8 is a chemical battery that can be used by repeatedly charging and discharging. The first battery 8 includes, for example, a storage battery, a rechargeable battery, etc. The first battery 8 is compatible with, for example, Qi (an international standard for wireless power supply). The first battery 8 can supply stored power to each part requiring power in the detection device 1. The first battery 8 is electrically connected to each part of the temperature sensor 3, the acceleration sensor 4, the light sensor 6, the communication circuit 7, the control circuit 10, and the multiple light sources 50, and supplies power to each part.

[0024] The control circuit 10 controls each part of the detection device 1. The control circuit 10 is, for example, an IC (Integrated Circuit) such as a microcontroller. The control circuit 10 may be, for example, a PLD (Programmable Logic Device) such as an FPGA (Field Programmable Gate Array).

[0025] 4, the control circuit 10 has a pulse wave measuring circuit 11, a temperature measuring circuit 12, an acceleration measuring circuit 13, a power supply circuit 14, and a CPU (Central Processing Unit) 15. These are connected by a bus B, and can exchange data with each other via the bus B. The control circuit 10 is electrically connected to a memory 5 and a communication circuit 7.

[0026] The memory 5 is a storage unit that stores various data. The memory 5 may include, for example, a random access memory (RAM), a read only memory (ROM), an electrically erasable programmable read only memory (EEPROM), etc. The memory 5 stores various information used by the control circuit 10. The memory 5 may be included in the control circuit 10.

[0027] Pulse wave measuring circuit 11 is connected to LED driver 54 and optical sensor 6. Pulse wave measuring circuit 11 measures the pulse frequency, blood oxygen concentration, etc. based on the detection data of optical sensor 6. LED driver 54 drives red LED 51, near-infrared LED 52, and green LED 53 to emit light.

[0028] The temperature measurement circuit 12 is electrically connected to the temperature sensor 3. The temperature measurement circuit 12 acquires temperature data from the temperature sensor 3.

[0029] The acceleration measuring circuit 13 is electrically connected to the acceleration sensor 4. The acceleration measuring circuit 13 acquires acceleration data from the acceleration sensor 4.

[0030] The power supply circuit 14 is connected to a battery driver 81. The battery driver 81 is electrically connected to the first battery 8 and the coil 9. The coil 9 is a charging coil for charging the first battery 8, and has a winding wound along the inner circumferential surface 210 of the housing 200. The housing 200 accommodates the coil 9 near the inner circumferential surface 210, and is configured so that a magnetic field passes through the housing 200. The coil 9 is electrically connected to a rectifier circuit (not shown), and is magnetically coupled when approaching a power transmission coil of a charger or the like, and receives an electromagnetic field from the power transmission coil and converts it into a current. The coil 9 may be shared with an NFC (Near Field Communication) antenna to capture electromagnetic waves in space and absorb energy. The power supply circuit 14 controls the charging of the first battery 8 and supplies power from the first battery 8 to each unit.

[0031] The CPU 18 is a control unit that controls each unit in the control circuit 10. The CPU 18 executes a predetermined program to measure or calculate biological information such as pulse wave velocity, blood pressure, and pulse frequency.

[0032] CPU 18 supplies control signals to pulse wave measuring circuit 11, temperature measuring circuit 12, and acceleration measuring circuit 13 to control the detection operations, and stores the measurement results of each circuit, information about the living body based on the measurement results, etc. in memory 5. CPU 18 supplies a control signal for light source 50 to LED driver 54 to control whether light source 50 is turned on or off.

[0033] 3, the connector 251 is provided on the terminal portion 250 of the housing 200, and is electrically connected to the removable device 500 attached to the housing 200. The connector 251 is used for transmitting and receiving data, power, and the like to and from the removable device 500. The connector 251 may be, for example, a quadruple concentric electrode.

[0034] 5, the terminal unit 250 has a connector 251 disposed near the center of the surface 250A, and a magnet 252 disposed so as to surround the connector 251. The terminal unit 250 has a screw thread formed on a side wall 253 extending from the surface 250A toward the housing 200. The connector 251 supplies the power supplied from the removable device 500 to the power supply circuit 14, thereby enabling charging of the first battery 8 from the removable device 500. The connector 251 supplies the power from the power supply circuit 14 to the removable device 500. In this way, the detection device 1 is configured to enable mutual power supply between the housing 200 and the removable device 500.

[0035] The removable device 500 has a second housing 510 that is detachably attached to the housing 200. The second housing 510 is formed in a rectangular parallelepiped shape using, for example, synthetic resin, metal, or the like. The second housing 510 is formed with a cylindrical recess 511 into which the terminal portion 250 of the housing 200 is fitted. The removable device 500 has a connector 514 disposed near the center of a bottom surface 512 of the recess 511, and a magnet 515 disposed so as to surround the connector 514. The connector 514 is, for example, a pogo pin connector, and the pin has a plunger, a spring, a barrel, or the like. The connector 514 is electrically connected to a power supply circuit 540, and charges the second battery 520 by supplying power from the outside to the power supply circuit 540. The second housing 510 has a screw groove formed on a side surface 513 that screws with a screw thread of a side wall 253 of the terminal portion 250 of the housing 200. When the removable device 500 is attached to or detached from the housing 200, the side surface 513 and the side wall 253 of the terminal portion 250 are fitted together and rotated while moving in the direction of removal from or attachment to the housing 200. In this case, the connector 514 rotates along a groove concentric with the connector 251. When the terminal portion 250 of the housing 200 is fitted into the recess 511 of the removable device 500, the connector 251 and the connector 514 of the terminal portion 250 are electrically connected, and the magnet 252 and the magnet 515 of the terminal portion 250 are attracted to each other. The detection device 1 improves the strength of the housing 200 and the removable device 500 when attached by screwing the terminal portion 250 of the housing 200 and the recess 511 of the removable device 500.

[0036] 2, the second housing 510 includes a second battery 520, a second coil 530, a power supply circuit 540, a light-emitting element 550, and haptics 560. These components are mounted and housed on a board (not shown). When the removable device 500 is attached to the housing 200, these components are electrically connected to the control circuit 10 of the housing 200 and are operable under the control of the control circuit 10.

[0037] The second battery 520 is, for example, a lithium ion battery, and supplies power to each component of the detachable device 500. When the detachable device 500 is attached to the housing 200, the second battery 520 supplies power used to charge the first battery 8 of the detachable device 500. Alternatively, the second battery 520 is charged with power supplied from the housing 200. The second battery 520 is electrically connected to a second coil 530 for receiving power, and is configured to magnetically fuse with the second coil 530 when approaching the power transmitting coil, and to be charged with a current converted by receiving an electromagnetic field from the power transmitting coil.

[0038] The power supply circuit 540 is electrically connected to the second battery 520 and the second coil 530. The second coil 530 is a charging coil for charging from a charger, and has a winding wound along the surface of the second housing 510. The second housing 510 accommodates the second coil 530 near the inner circumferential surface 210, and is configured so that a magnetic field passes through the second housing 510. The second coil 530 is electrically connected to a rectifier circuit (not shown), and is magnetically coupled when approaching a power transmission coil such as a charger, and receives an electromagnetic field from the power transmission coil and converts it into a current. The second coil 530 may be shared with an NFC antenna to capture electromagnetic waves in space and absorb energy. The power supply circuit 540 controls the charging of the second battery 520 and supplies power from the second battery 520 to each part.

[0039] The light emitting element 550 is an LED that is disposed on the surface or inside of the second housing 510 and can notify various information of the detection device 1. The light emitting element 550 notifies an alert under the control of the control circuit 10 of the housing 200. A plurality of light emitting elements 550 may be provided in the second housing 510.

[0040] Haptics 560 is disposed inside second housing 510, and vibrates housing 200 to which removable device 500 is attached by applying vibration or the like to second housing 510. The start and end of vibration of haptics 560 is controlled by control circuit 10 of housing 200. This allows detection device 1 to transmit the interval of vibration or the like to finger Fg on which it is attached, without providing a configuration for vibrating housing 200.

[0041] In this embodiment, the light emitting element 550 and the haptics 560 realize the notification function of the detection device 1 outside the housing 200. As a result, the detection device 1 does not need to provide a configuration for notification in the housing 200, which can contribute to making the housing 200 smaller.

[0042] The removable device 500 comprises a second housing 510 having a second battery 520, a second coil 530, a light-emitting element 550, and haptics 560, and a recess 511 (mounting portion) into which the second housing 510 can be detachably mounted on the outer peripheral surface 220 of the ring-shaped housing 200, and can be provided as a gadget that charges the first battery 8 in the housing 200 with power from the second battery 520 via the recess 511.

[0043] FIG. 6 is a diagram for explaining an example of charging between the detection device 1 and the charger 700. In this embodiment, the detection device 1 may include a charger 700 capable of wirelessly charging the first battery 8 in the housing 200 from outside the housing 200. As shown in scene C1 of FIG. 6, the detection device 1 can charge the first battery 8 from the charger 700 in a first state in which the removable device 500 is attached. As shown in scene C2 of FIG. 6, the detection device 1 can charge the first battery 8 from the charger 700 in a second state in which the removable device 500 is not attached. The charger 700 is formed in a cylindrical third housing 701 with an outer diameter slightly smaller than the inner diameter of the housing 200 of the detection device 1. In the charger 700, a locking portion (not shown) that locks and positions the detection device 1 so that the internal third coil 710 faces the coil 9 of the detection device 1 is formed on the outer periphery of the third housing 701.

[0044] 7 is a configuration diagram showing a configuration example of a charger 700. As shown in FIG. 7, the charger 700 includes a third coil 710 capable of supplying power to the coil 9 of the detection device 1, and a power source 720 capable of supplying power to the third coil 710. The third coil 710 and the power source 720 are electrically connected via a drive circuit 711. The third coil 710 is a resonant coil and operates by a drive voltage from the power source 720. The power source 720 is an AC power source. The charger 700 is a device that supplies power wirelessly by magnetically coupling the third coil 710 and the coil 9 of the housing 200 close to the power receiving side.

[0045] The configuration example of the detection device 1 according to the present embodiment has been described above. Note that the above configuration described with reference to Figs. 1 to 7 is merely an example, and the configuration of the detection device 1 according to the present embodiment is not limited to this example. The configuration of the detection device 1 according to the present embodiment can be flexibly modified according to the specifications and operation.

[0046] [Detection device system configuration example] 8 is a diagram for explaining an example of charging the detection device 1. In Fig. 8, solid arrows indicate power supply, and dashed arrows indicate data communication. As shown in Fig. 8, the detection device 1 includes a removable device 500 and a charger 700.

[0047] The detection device 1 supplies power from a first battery 8 in the housing 200 to the temperature sensor 3, acceleration sensor 4, memory 5, optical sensor 6, communication circuit 7, control circuit 10, pulse wave measurement circuit 11, temperature measurement circuit 12, acceleration measurement circuit 13, light source 50, etc. The control circuit 10 in the housing 200 is capable of data communication with the pulse wave measurement circuit 11, temperature measurement circuit 12, acceleration measurement circuit 13, etc. The detection device 1 supplies power from a second battery 520 in the removable device 500 to the light emitting element 550, haptics 560, etc.

[0048] The charger 700 includes a plurality of third coils 710, a power source 720, a plurality of contact terminals 730, and a power source control circuit 740. The plurality of third coils 710 are arranged to correspond to the coils 9 of the housing 200 and the second coils 530 of the detachable device 500, respectively. The plurality of third coils 710 are electrically connected to a drive circuit 711, and are operated by a drive voltage from the power source 720 by the drive circuit 711. The plurality of contact terminals 730 are arranged to be able to come into contact with the connector 514 of the detachable device 500, etc. The plurality of contact terminals 730 are electrically connected to a power source circuit 731, and the power source circuit 731 supplies power from the power source 720.

[0049] In the detection device 1, the control circuit 10 in the housing 200 and the detachable device 500 can mutually supply power and communicate data with each other using a first interface 810. In the detection device 1, each of the housing 200 and the detachable device 500 and the charger 700 can be charged using a second interface 820.

[0050] The control circuit 10 of the housing 200 is capable of performing control by data communication with the light emitting element 550, the haptics 560, etc. of the removable device 500 attached to the housing 200 via the connector 251.

[0051] The housing 200 is configured to be able to supply power wirelessly by magnetically coupling the coil 9 with the third coil 710 of the charger 700. The housing 200 is configured to be able to supply power from the detachable device 500 via the connector 251 and to supply power to the detachable device 500 by electrically connecting the connector 251 with the connector 514 of the detachable device 500.

[0052] For example, as shown in FIG. 1, when the removable device 500 is attached to the housing 200 and the housing 200 is not fixed to the charger 700, the detection device 1 can charge the first battery 8 with power supplied from the removable device 500 via the connector 251.

[0053] 6, when the detachable device 500 is attached to the housing 200 and the housing 200 is fixed to the charger 700, the detection device 1 charges the first battery 8 with wireless power generated by magnetic coupling between the coil 9 and the third coil 710 of the charger 700. In this case, when the remaining charge of the second battery 520 of the detachable device 500 is equal to or lower than the determination threshold, the detection device 1 supplies power from the first battery 8 or the charger 700 to the detachable device 500 by the control circuit 10 of the housing 200. This allows the detection device 1 to charge the second battery 520 of the detachable device 500 with power from the housing 200.

[0054] For example, as shown in scene C2 of Figure 6, when the casing 200 is fixed to the charger 700 with no removable device 500 attached to the casing 200, the detection device 1 charges the first battery 8 with wireless power generated by magnetic coupling between the coil 9 and the third coil 710 of the charger 700.

[0055] [Example of detection device operation] Fig. 9 is a diagram for explaining an operation example of the detection device 1. Fig. 9 shows an operation period of the basic configuration of the housing 200 and the removable device 500 in the detection device 1. In the basic configuration, the housing 200 includes a light source 50, a light sensor 6, an acceleration sensor 4, a temperature sensor 3, a control circuit 10, and a first battery 8, and the removable device 500 includes a light emitting element 550, a haptic 560, and a second battery 520.

[0056] As shown in FIG. 9, the detection device 1 periodically executes measurement periods M1, M2, M3, M4, M5, and M6 in which the green LED 53 is turned on for a predetermined time by the power of the first battery 8 in the housing 200, and then the red LED 51 and the near-infrared LED 52 are turned on for a predetermined time, and the light from each of the turned-on LEDs is measured by the optical sensor 6. In an example shown in FIG. 9, the measurement periods M1, M2, and M3 are executed during a period P1 in which the removable device 500 is attached to the housing 200. The measurement periods M4 and M5 are executed during a period P2 in which the removable device 500 is removed from the housing 200 and charged, and only the housing 200 is attached to the finger Fg. The measurement period M6 is executed during a period P3 in which the removable device 500 after charging is attached to the housing 200.

[0057] The detection device 1 operates the acceleration sensor 4 and the control circuit 10 constantly with power from the first battery 8 in the housing 200, and sequentially executes measurement periods M1, M2, M3, M4, M5, and M6 in which the temperature sensor 3 is periodically operated. The detection device 1 supplies power from the first battery 8 in the housing 200 to each part to be executed.

[0058] During periods P1 and P3 when the detachable device 500 is attached to the housing 200, the detection device 1 is in a state in which the second battery 520 of the detachable device 500 can supply power to the light-emitting element 550 and the haptics 560 or the first battery 8 of the housing 200.

[0059] During period P1, the control circuit 10 of the detection device 1 senses a decrease in SpO2 based on the measurement results during the measurement period M2, and transmits notification information notifying the user of a biological abnormality to the light-emitting element 550 and the haptics 560 of the removable device 500, causing the light-emitting element 550 to light up and the haptics 560 to vibrate. As a result, the detection device 1 notifies the user of the biological abnormality by lighting up the light-emitting element 550 of the removable device 500 and vibrating the haptics 560.

[0060] Thereafter, when the measurement period M3 ends and the control circuit 10 detects a low power level of the second battery 520 of the removable device 500, the detection device 1 transmits notification information for notifying the low power level to the light-emitting element 550, causing the light-emitting element 550 to blink. A low power level means that the remaining power of the battery is equal to or less than a predetermined value. In this way, the detection device 1 can make the user aware that the second battery 520 of the removable device 500 has a low power level by the blinking of the light-emitting element 550 of the removable device 500.

[0061] In the period P2, the user removes the detachable device 500 from the housing 200, and charges the second battery 520 of the detachable device 500 using the charger 700. In this case, the detection device 1 performs periodic measurements of the housing 200 in a state in which the detachable device 500 is removed during the measurement periods M4 and M5. After that, when the charging of the detachable device 500 is completed, the detection device 1 attaches the detachable device 500 to the housing 200. When the control circuit 10 detects that the second battery 520 of the detachable device 500 is fully charged, the detection device 1 transmits notification information to the light-emitting element 550 to notify the full charge amount, so that the light-emitting element 550 is turned on. As a result, the detection device 1 can make the user recognize that the second battery 520 of the detachable device 500 is fully charged by turning on the light-emitting element 550 of the detachable device 500 attached to the housing 200. The detection device 1 may charge the first battery 8 of the housing 200 with the power of the second battery 520 of the attached detachable device 500.

[0062] Thereafter, the detection device 1 transitions from period P2 to period P3. In period P3, similarly to period P1, the detection device 1 executes a measurement period M6 in which the green LED 53 is turned on for a predetermined time using the power of the first battery 8 in the casing 200, and then the red LED 51 and the near-infrared LED 52 are turned on for a predetermined time, and the light caused by each turning on is measured by the optical sensor 6, and thereafter the measurement is periodically repeated.

[0063] As described above, the detection device 1 includes a ring-shaped housing 200 having a light source 50, a light sensor 6, a control circuit 10, a power supply circuit 14 (first power supply circuit), and a first battery 8, and charging the first battery 8 with power from a charger 700, and a terminal unit 250 for removably mounting the removable device 500 on the outside of the housing 200 and enabling charging of the first battery 8 from the removable device 500. As a result, the detection device 1 can charge the first battery 8 in the housing 200 using the charger 700, and can charge the first battery 8 from the removable device 500 mounted on the outside of the housing 200, so that charging is possible with the housing 200 mounted, and the first battery 8 housed in the housing 200 can be made smaller. Since the detection device 1 can share the battery between the housing 200 and the removable device 500, the housing 200 can be made thinner, improving wearability. The detection device 1 can be used continuously even when the removable device 500 is removed. As a result, the detection device 1 can reduce the size of the ring-shaped housing 200 and improve the convenience.

[0064] In the detection device 1, the removable device 500 includes a second battery 520 and a power supply circuit 540 (second power supply circuit), and when the removable device 500 is attached to the terminal unit 250, the second battery 520 of the removable device 500 and the first battery 8 of the housing 200 can be charged by each other via the power supply circuit 540 of the removable device 500. This allows the detection device 1 to charge the first battery 8 from the removable device 500 attached to the outside of the housing 200, and also to charge the second battery 520 of the removable device 500 from the first battery 8. As a result, the detection device 1 can charge the second battery 520 of the removable device 500 when charging the first battery 8 of the housing 200, thereby improving convenience.

[0065] The detection device 1 includes a second coil 530 for the detachable device 500 to receive power from the third coil 710 (external coil) of the charger to the second battery 520. This allows the detection device 1 to wirelessly charge the detachable device 500 by itself, further reducing the chances of removing the housing 200 from the finger Fg. As a result, the detection device 1 allows the user to wear the housing 200 for a long period of time, and the period during which the housing 200 is removed for charging can be reduced.

[0066] In the detection device 1, when the removable device 500 is attached to the terminal portion 250 of the housing 200, the removable device 500 includes at least one of the light-emitting element 550 and the haptics 560 that can be controlled by the control circuit 10 of the housing 200. This eliminates the need for the detection device 1 to house at least one of the light-emitting element 550 and the haptics 560 in the housing 200, making it possible to reduce the size of the housing 200. As a result, the detection device 1 can reduce the size of the housing 200, improve the wearability, and enhance the functions of the device.

[0067] In the detection device 1, the light source 50 irradiates at least one of visible light, near-infrared light, and infrared light, and the control circuit 10 detects information about the living body that the housing 200 comes into contact with, based on information detected by the optical sensor 6. This allows the detection device 1 to keep the housing 200 attached for a long period of time, thereby preventing interruptions in the information about the detected living body.

[0068] In the detection device 1, the housing 200 has at least one of the temperature sensor 3 and the acceleration sensor 4. This allows the detection device 1 to have the housing 200 worn for a long period of time, thereby suppressing interruption of information regarding the detected temperature, acceleration, and the like.

[0069] At least one of the light emitting element 550 and the haptics 560 of the removable device 500 notifies the detection device 1 of the state of the second battery 520 of the removable device 500. In this way, the detection device 1 can quickly charge the second battery 520 by notifying the state of the second battery 520.

[0070] The detection device 1 includes a charger 700 that can wirelessly charge the first battery 8 in the housing 200 from outside the housing 200. As a result, even if the housing 200 is made smaller, the detection device 1 can wirelessly charge the first battery 8 using the charger 700, thereby preventing a decrease in convenience.

[0071] [Modifications of the embodiment] Fig. 10 is a perspective view showing an example of a charging stand equipped with a plurality of chargers. Fig. 11 is a schematic cross-sectional view taken along line BB shown in Fig. 10. As shown in Figs. 10 and 11, the charging stand 800 is formed in a disk shape and equipped with a plurality of chargers 700, charger 700A, and charger 700B. In the example shown in Fig. 10, the charging stand 800 is equipped with the above-mentioned two chargers 700, three chargers 700A, and two chargers 700B.

[0072] The charger 700A charges the detachable devices 500A, 500B, and 500C that are detachably attached to the detection device 1 in a non-contact manner. The detachable devices 500A, 500B, and 500C have the same configuration as the detachable device 500, and only the shape of the second housing 510 is different. The detachable device 500A has a housing that is hemispherical. The detachable device 500B has a housing that is polyhedral. The detachable device 500C has a housing that is ellipsoidal. As shown in FIG. 10 and FIG. 11, each of the multiple chargers 700A includes a recess 700A1 into which the detachable devices 500A, 500B, and 500C are fitted, and a third coil 710 provided at the bottom of the recess 700A1. The third coil 710 is electrically connected to the power source 720 described above. Each of the plurality of chargers 700A is a device that supplies electric power wirelessly by magnetically coupling the third coil 710 with the second coil 530 of the removable device 500A, 500B, 500C, etc., fitted in the recess 700A1.

[0073] As shown in FIG. 10, the charger 700B charges the detachable devices 500D and 500E, which are detachably attached to the detection device 1, through a connector. The detachable devices 500D and 500E have the same configuration as the detachable device 500, and only the shape of the second housing 510 is different. The detachable device 500D has a pyramidal housing. The detachable device 500E has a cubic housing. As shown in FIG. 10 and FIG. 11, each of the multiple chargers 700B is formed in a convex shape and includes the above-mentioned contact terminal 730, and power from the power source 720 is supplied to the contact terminal 730. Each of the multiple chargers 700B is a device that supplies power to the detachable devices 500D, 500E, etc. by bringing the connector 514 of the detachable device 500D or 500E into contact with the contact terminal 730.

[0074] The charging stand 800 is provided with a plurality of chargers 700, 700A, and 700B with different charging methods, and is therefore capable of charging the first battery 8 in the housing 200 of the detection device 1 and a plurality of detachable devices 500, 500A, 500B, 500C, 500D, 500E, etc. of various shapes. This allows the detection device 1 to use detachable devices 500, etc. of various shapes, thereby improving the commercial value.

[0075] In the above-described embodiment, the detection device 1 is configured to include the detachable device 500 and the charger 700, but is not limited thereto. The detection device 1 may be configured to include either one of the detachable device 500 and the charger 700. The detection device 1 may be a system including a device having the configuration of the housing 200, the detachable device 500, and the charger 700.

[0076] In each of the above-described embodiments, each component can be appropriately combined. In addition, other effects and advantages brought about by the aspects described in the present embodiment that are obvious from the description in this specification or that can be appropriately conceived by a person skilled in the art are naturally understood to be brought about by the present invention. [Explanation of symbols]

[0077] 1. Detection device 3 Temperature Sensor 4. Acceleration Sensor 5. Memory 6. Light Sensor 7. Communication Circuits 8. First Battery 10 Control circuit 11 Pulse wave measurement circuit 12 Temperature measurement circuit 13 Acceleration measurement circuit 14 Power circuit 15 CPU 50 light source 200 units 201 Hollow part 210 Inner surface 220 Outer surface 230 Contact part 250 Terminal section 251 Connector 252 Magnet 500 Attachment and detachment equipment 510 2nd unit 511 Recess 512 Bottom 514 Connector 520 Second Battery 530 Second coil 540 Power supply circuit 550 Light emitting element 560 Haptics 700 charger 710 3rd coil 720 power supply 730 contact terminal 740 Power supply control circuit 810 First Interface 820 Second Interface Fg finger

Claims

1. a ring-shaped housing having a light source, a light sensor, a control circuit, a first power supply circuit, and a first battery, the first battery being charged with power from a charger; a terminal section for removably mounting a removable device on the outside of the housing and for enabling charging of the first battery from the removable device; A detection device comprising:

2. The attachment / detachment device is attached to the terminal portion, the removable device includes a second battery and a second power supply circuit; The second battery of the removable device and the first battery of the housing are capable of charging each other via a second power supply circuit when the removable device is attached to the terminal portion. The detection device according to claim 1 .

3. The attachment / detachment device includes a second coil for receiving power from an external coil to the second battery.

3. The detection device according to claim 2.

4. The removable device includes at least one of a light-emitting element and a haptic that can be controlled by the control circuit of the housing when the removable device is attached to the terminal portion.

3. The detection device according to claim 2.

5. The light source irradiates at least one of visible light, near infrared light, and infrared light; The control circuit detects information about a living body with which the housing is in contact, based on information detected by the optical sensor.

5. The detection device according to claim 4.

6. The housing has at least one of a temperature sensor and an acceleration sensor.

6. The detection device according to claim 5.

7. At least one of the light emitting element and the haptic of the attachment device indicates a status of the second battery.

7. The detection device according to claim 6.

8. The charger is capable of wirelessly charging the first battery in the housing from outside the housing.

8. The detection device according to claim 7.

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