Wearable device, attachment / detachment determination system, attachment / detachment determination method, and program

Abstract

To determine attachment / detachment of a wearable device with a relatively simple configuration.SOLUTION: The control unit of the electronic timepiece acquires information indicating a radio wave intensity in wireless communication with the ring device by the communication unit, and determines whether or not the electronic timepiece is worn by the user based on a determination result of whether or not the radio wave intensity is equal to or greater than a predetermined threshold value.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a wearable device, a system for determining whether a wearer is wearing or not, a method for determining whether a wearer is wearing or not, and a program. [Background technology]

[0002] BACKGROUND ART Conventionally, there is known a technique for determining whether a wearable device is worn or undone based on the detection result of biological information (pulse wave) acquired from a pulse wave sensor or the like (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-16215 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology described in Patent Document 1 was unable to properly determine whether the pulse wave sensor was in use if it malfunctioned. Furthermore, it was difficult to determine whether the wearer was in use or not for wearable devices that did not have a pulse wave sensor.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to enable determination of whether a wearable device is being worn or detached with a relatively simple configuration. [Means for solving the problem]

[0006] In order to solve the above problems, one embodiment of the wearable device of the present invention is a wearable device that includes a communication unit capable of wireless communication with a specified electronic device, and a control unit, wherein the control unit acquires information indicating the radio wave strength in wireless communication with the electronic device via the communication unit, and determines whether the wearable device is being worn by a user based on the determination result of whether the radio wave strength is above a specified threshold. [Effects of the Invention]

[0007] According to the present invention, it is possible to determine whether a wearable device is being worn or detached with a relatively simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of the configuration of a wearing / unwearing determination system according to the present invention. [Figure 2] FIG. 2 is a block diagram showing a functional configuration of the wearing / removing determination system. [Figure 3] FIG. 10 is a diagram showing the state in which the electronic timepiece is not being worn. [Figure 4] 10 is a flowchart showing the flow of processing on the ring device side executed by a control unit of the ring device. [Figure 5] 10 is a flowchart showing the procedure for a wear / unwear determination process executed by the control unit of the electronic timepiece. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention. Therefore, the technical scope of the present invention is not limited to the following embodiments and illustrated examples.

[0010] First, we will explain the wear / detachment determination system 100 according to an embodiment of the present invention. As shown in Fig. 1, the wear / detachment determination system 100 comprises a ring device 1 (electronic device) and an electronic watch 2 (wearable device). The ring device 1 is basically worn on the user's hand (including fingers) at all times (second wearable device). The electronic watch 2 can be worn on the user's hand (including wrist) and removed.

[0011] As shown in FIG. 2, the ring device 1 includes a control unit 11, a sensor unit 12, an authentication unit 13, and a communication unit 14, and each unit is connected via a bus 15.

[0012] The control unit 11 is configured with at least one CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), etc. The control unit 11 is a computer that controls each part of the ring device 1. The CPU of the control unit 11 reads out a specified program from among the system programs and various programs stored in the ROM, expands it into the RAM, and executes various processes in cooperation with the expanded program.

[0013] The sensor unit 12 includes a sensor, such as an infrared sensor or a capacitance sensor, for detecting whether the ring device 1 is being worn, and outputs a value detected by the sensor to the control unit 11. The sensor unit 12 may also include an acceleration sensor, a pulse sensor (heart rate sensor), etc.

[0014] The authentication unit 13 uses finger vein authentication or fingerprint authentication to authenticate whether the person wearing the ring device 1 is the user authorized to use the ring device 1, and outputs the authentication result to the control unit 11. Note that the authentication unit 13 may be realized by cooperation between the CPU of the control unit 11 and a program stored in the ROM.

[0015] The communication unit 14 controls communication with external devices such as the electronic timepiece 2 using a predetermined communication method such as Bluetooth (registered trademark).

[0016] The electronic watch 2 is, for example, a smart watch, and as shown in Figure 2, it includes a control unit 21, a memory unit 22, a communication unit 23, an operation unit 24, a display unit 25, a timing unit 26, and a sensor unit 27, and each unit is connected via a bus 28.

[0017] The control unit 21 is configured with at least one CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), etc. The control unit 21 is a computer that controls each part of the electronic watch 2. The CPU of the control unit 21 reads out a specified program from the system program stored in the ROM or from various applications (application programs) stored in the memory unit 22, expands it in the RAM, and executes various processes in cooperation with the expanded program.

[0018] The storage unit 22 is composed of a non-volatile semiconductor memory or the like. The storage unit 22 stores various application programs and data necessary for executing the programs. For example, the storage unit 22 stores the correspondence between the distance from the ring device 1 and the radio wave intensity of the radio waves received from the ring device 1 by the communication unit 23. Note that the storage unit 22 is not limited to being built into the electronic watch 2, but may include an external recording medium that is detachable from the electronic watch 2. The control unit 21 executes various functions in cooperation with application programs (apps) stored in the storage unit 22.

[0019] The communication unit 23 controls communication to perform wireless communication with an external device via a wireless LAN such as Wi-Fi (registered trademark), a communication network including a mobile phone communication network and the Internet, or Bluetooth (registered trademark), etc. In this embodiment, the communication unit 23 performs wireless communication with the ring device 1 via Bluetooth (registered trademark).

[0020] The operation unit 24 is composed of push button switches, a touch panel superimposed on the display unit 25, etc. The operation unit 24 outputs to the control unit 21 an operation signal corresponding to the operation of the push button switch by the user or an operation signal corresponding to the operation of the touch panel.

[0021] The display unit 25 is configured with a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display, and performs display based on the control operation of the control unit 21.

[0022] The timekeeping unit 26 includes an oscillation circuit, a frequency dividing circuit, a timekeeping circuit, etc., and measures the current date and time and outputs the measured time to the control unit 21.

[0023] The sensor unit 27 includes various sensors and outputs values ​​detected by the sensors to the control unit 21. Examples of the sensors included in the sensor unit 27 include at least one of an acceleration sensor, a pulse sensor (heart rate sensor), a gyro sensor, a temperature sensor, and an air pressure sensor.

[0024] Next, the operation of the wear / removal determination system 100 in this embodiment will be described. As shown in Figure 1, when the electronic watch 2 is worn on the user's wrist, the distance between the ring device 1 and the electronic watch 2 is maintained at the distance D1 shown in Figure 1. On the other hand, when the electronic watch 2 is not worn on the user's wrist, the distance D2 between the ring device 1 and the electronic watch 2 is longer than the distance D1, as shown in Figure 3. The wear / removal determination system 100 uses this to determine whether the electronic watch 2 is worn or not, that is, to determine whether the electronic watch 2 is worn by the user.

[0025] First, the processing on the ring device side will be described with reference to Fig. 4. The processing on the ring device side shown in Fig. 4 is executed by the CPU of the control unit 11 in cooperation with a program stored in the ROM.

[0026] First, the control unit 11 determines whether the ring device 1 is being worn based on the detection value from the sensor unit 12 (step S1). For example, the control unit 11 determines that the ring device 1 is being worn when the detection value of the infrared sensor or capacitance sensor of the sensor unit 12 is equal to or greater than a predetermined threshold, and determines that the ring device 1 is not being worn when the detection value of the infrared sensor or capacitance sensor is less than the predetermined threshold. If the control unit 11 determines that the ring device 1 is not being worn (step S1; NO), the control unit 11 returns to step S1.

[0027] If it is determined that the ring device 1 is being worn (step S1; YES), the control unit 11 causes the authentication unit 13 to perform personal authentication, and determines (step S2) whether the person wearing the ring device 1 is the actual user authorized to use the ring device 1. If it is determined as a result of the authentication that the person wearing the ring device 1 is not the actual user of the ring device 1 (personal authentication NG) (step S2; NO), the control unit 11 returns to step S1.

[0028] If the authentication result indicates that the person wearing the ring device 1 is the actual user of the ring device 1 (authentication OK) (step S2; YES), the control unit 11 causes the communication unit 14 to start BLE (Bluetooth (registered trademark) Low Energy) communication (step S3). For example, the control unit 11 causes the communication unit 14 to start advertising, and communicates with the electronic watch 2 in response to a connection request from the electronic watch 2. If communication with the electronic watch 2 is cut off or if there is no connection request from the electronic watch 2 for more than a predetermined time, the control unit 11 ends the BLE communication and returns to step S1. The control unit 11 repeatedly executes steps S1 to S3 while power is being supplied.

[0029] Next, the wearing / detaching determination process executed by the control unit 21 of the electronic timepiece 2 will be described with reference to Fig. 5. The wearing / detaching determination process is executed by the CPU of the control unit 21 in cooperation with a program stored in the storage unit 22. The wearing / detaching determination process shown in Fig. 5 is performed under the assumption that the user is wearing the ring device 1 and the electronic timepiece 2 on the same hand.

[0030] In the attachment / detachment determination process, first, the control unit 21 determines whether or not a communication connection with the ring device 1 is possible via the communication unit 23 (step S11). For example, the control unit 21 starts BLE communication (scanning) via the communication unit 23, and determines whether or not a communication connection with the ring device 1 is possible based on whether or not a signal (advertisement) has been received from the ring device 1. Note that if a communication connection with the ring device 1 is already in progress, it is determined that a communication connection with the ring device 1 is possible.

[0031] If it is determined that communication connection with the ring device 1 is not possible (step S11; NO), the control unit 21 returns to step S11. If it is determined that communication connection with the ring device 1 is possible (step S11; YES), the control unit 21 starts measuring the radio wave strength in wireless communication with the ring device 1 (step S12). For example, when the control unit 21 receives an advertising signal from the ring device 1 via the communication unit 23, the control unit 21 measures the radio wave strength by acquiring information indicating the strength of the received radio wave (radio reception strength indicator: RSSI).

[0032] Next, the control unit 21 determines whether radio waves with a radio wave intensity of at least 20 cm corresponding to a distance between the ring device 1 and the electronic watch 2 have been continuously received from the ring device 1 for a predetermined period of time or more (e.g., 5 to 10 seconds) (step S13).

[0033] Here, when the user wears the ring device 1 and the electronic watch 2 on the same wrist, the distance D1 between the ring device 1 and the electronic watch 2 is at most approximately 20 cm. Furthermore, when the user wears the ring device 1 and the electronic watch 2 on the same wrist, the distance D1 between the ring device 1 and the electronic watch 2 is kept constant, so the radio wave strength of the wireless communication with the ring device 1 is stable at or above the radio wave strength corresponding to a distance of 20 cm between the ring device 1 and the electronic watch 2. On the other hand, as shown in FIG. 3 , when the user takes off the electronic watch 2, the distance D2 between the ring device 1 and the electronic watch 2 becomes greater than the distance D1. That is, when the user takes off the electronic watch 2, the radio wave strength of the wireless communication with the ring device 1 becomes weaker than the radio wave strength corresponding to a distance of 20 cm between the ring device 1 and the electronic watch 2. Therefore, in step S13, it is determined whether the electronic watch 2 is being worn by the user based on whether information indicating that the strength of the radio waves received from the ring device 1 is equal to or above the radio wave strength corresponding to a distance of 20 cm between the ring device 1 and the electronic watch 2 has been continuously acquired for a predetermined period of time.

[0034] In step S13, if it is determined that radio waves of a radio wave intensity of at least 20 cm corresponding to a distance between the ring device 1 and the electronic watch 2 have not been received continuously from the ring device 1 for a predetermined period of time or more (step S13; NO), the control unit 21 determines that the electronic watch 2 is not being worn by the user (removed) (step S23) and returns to step S11.

[0035] If it is determined that radio waves with a radio wave intensity equal to or greater than that corresponding to a distance of 20 cm between the ring device 1 and the electronic watch 2 have been continuously received from the ring device 1 for a predetermined time or longer (step S13; YES), the control unit 21 determines whether or not both the ring device 1 and the electronic watch 2 are equipped with acceleration sensors (step S14). The control unit 21, for example, inquires of the ring device 1 via the communication unit 23 about the presence or absence of an acceleration sensor, obtains information indicating the presence or absence of an acceleration sensor in the ring device 1, and determines whether or not both the ring device 1 and the electronic watch 2 are equipped with acceleration sensors. Note that the control unit 21 may store the information indicating the presence or absence of an acceleration sensor received from the ring device 1 in the storage unit 22, and may subsequently make the determination in step S14 based on the information stored in the storage unit 22.

[0036] If it is determined that at least one of the ring device 1 and the electronic timepiece 2 does not have an acceleration sensor (step S14; NO), the control unit 21 proceeds to the processing of step S18.

[0037] If it is determined that both the ring device 1 and the electronic watch 2 are equipped with acceleration sensors (step S14; YES), the control unit 21 instructs the ring device 1 via the communication unit 23 to measure acceleration for a predetermined time (e.g., 10 seconds) (step S15). The control unit 21 also causes the acceleration sensor of the sensor unit 27 to measure acceleration for a predetermined time (e.g., 10 seconds) (step S16). After acquiring the acceleration measurement results for the predetermined time from the ring device 1 and the sensor unit 27, the control unit 21 compares the pattern of acceleration change acquired from the ring device 1 with the pattern of acceleration change acquired from the sensor unit 27, and determines whether the patterns of acceleration change between the ring device 1 and the sensor unit 27 are the same (match) (step S17). For example, the control unit 21 compares the patterns of acceleration change (time change) for each of the x-axis, y-axis, and z-axis of the ring device 1 and the sensor unit 27, and if the timing at which the acceleration reaches its maximum and minimum values ​​for all axes is approximately the same, the control unit 21 determines that the patterns of acceleration change for the ring device 1 and the sensor unit 27 are the same.

[0038] If it is determined that the patterns of acceleration change between the ring device 1 and the sensor unit 27 are different (step S17; NO), the control unit 21 determines that the electronic watch 2 is not being worn by the user (removed) (step S23) and returns to step S11.

[0039] If it is determined that the patterns of change in acceleration of the ring device 1 and the sensor unit 27 are the same (step S17; YES), the control unit 21 proceeds to the processing of step S18.

[0040] In step S18, the control unit 21 determines whether or not a pulse sensor is provided in both the ring device 1 and the electronic watch 2 (step S18). For example, the control unit 21 inquires of the ring device 1 via the communication unit 23 about the presence or absence of a pulse sensor, acquires information indicating the presence or absence of a pulse sensor in the ring device 1, and determines whether or not a pulse sensor is provided in both the ring device 1 and the electronic watch 2. Note that the control unit 21 may store the information indicating the presence or absence of a pulse sensor acquired from the ring device 1 in the storage unit 22, and thereafter, when making the determination in step S18, make the determination based on the information stored in the storage unit 22.

[0041] If it is determined that at least one of the ring device 1 and the electronic watch 2 does not have a pulse sensor (step S18; NO), the control unit 21 proceeds to the process of step S22.

[0042] If it is determined that both the ring device 1 and the electronic watch 2 are equipped with pulse sensors (step S18; YES), the control unit 21 instructs the ring device 1 via the communication unit 23 to measure the pulse rate (e.g., the number of pulses per minute (heart rate)) for a predetermined time (e.g., one minute) (step S19).The control unit 21 also causes the pulse sensor of the sensor unit 27 to measure the pulse rate (heart rate) for a predetermined time (e.g., one minute) (step S20).

[0043] When the pulse rate measurement results are acquired from the ring device 1 and the sensor unit 27, the control unit 21 compares the pattern of change in the pulse rate acquired from the ring device 1 with the pattern of change in the pulse rate acquired from the sensor unit 27, and determines whether the patterns of change (time change) in the pulse rates of the ring device 1 and the sensor unit 27 are the same (match) (step S21). For example, if the timings at which the pulse rate measurement results of the ring device 1 and the sensor unit 27 take their maximum and minimum values ​​are approximately the same, the control unit 21 determines that the patterns of change in the pulse rates of the ring device 1 and the sensor unit 27 are the same.

[0044] It should be noted that the same pulse rate may not always be obtained because the degree of tightness and the distance from the heart are different between the ring device 1 and the sensor unit 27. Therefore, the pulse rate may be measured in advance by the ring device 1 and the sensor unit 27 while the user is wearing both, and it may be determined whether the patterns of change are the same by taking into account the difference in the measurement results between the ring device 1 and the sensor unit 27 (differences in pulse rate and timing, etc.).

[0045] If it is determined that the patterns of change in pulse rate between the ring device 1 and the sensor unit 27 are different (step S21; NO), the control unit 21 determines that the electronic watch 2 is not being worn by the user (removed) (step S23) and returns to step S11.

[0046] When it is determined that the patterns of changes in the heart rate of the ring device 1 and the sensor unit 27 are the same (step S21; YES), the control unit 21 proceeds to the processing of step S22.

[0047] In step S22, the control unit 21 determines that the electronic timepiece 2 is being worn by the user (step S22), and the process returns to step S11.

[0048] The control unit 21 repeatedly executes the processes of steps S11 to S23 while power is being supplied.

[0049] When the control unit 21 determines that the electronic watch 2 is worn by the user, it continues to acquire logs of vital sensing measurements and activity measurements based on the detection values ​​of the sensor unit 27. When the control unit 21 determines that the electronic watch 2 is not worn by the user, it stops acquiring logs of vital sensing measurements and activity measurements based on the detection values ​​of the sensor unit 27. This makes it possible to prevent unnecessary or inappropriate logs from being acquired.

[0050] In this way, the control unit 21 determines that the electronic watch 2 is not being worn by the user if it determines that radio waves with a radio wave intensity of at least 20 cm corresponding to a distance between the ring device 1 and the electronic watch 2 have not been received continuously for a predetermined time or longer from the ring device 1. Therefore, it is possible to determine with a relatively simple configuration that the electronic watch 2 is not being worn by the user.

[0051] Furthermore, only when it is determined that radio waves with a radio wave intensity of at least 20 cm corresponding to a distance between the ring device 1 and the electronic watch 2 have been continuously received from the ring device 1 for at least a predetermined time does the control unit 21 determine whether both the ring device 1 and the electronic watch 2 are equipped with at least one of an acceleration sensor or a pulse sensor. If it is determined that neither the ring device 1 nor the electronic watch 2 is equipped with an acceleration sensor or a pulse sensor, the control unit 21 determines that the electronic watch 2 is being worn by the user. Therefore, even with a relatively simple configuration that does not include an acceleration sensor or a pulse sensor, it is possible to determine whether the electronic watch 2 is being worn by the user by using the radio wave intensity.

[0052] If it is determined that radio waves of a radio wave intensity of at least 20 cm corresponding to a distance between the ring device 1 and the electronic watch 2 have been continuously received from the ring device 1 for at least a predetermined time, and if it is determined that both the ring device 1 and the electronic watch 2 are equipped with at least one of an acceleration sensor or a pulse sensor, the control unit 21 further determines whether the patterns of change in the detected values ​​of the sensors in the ring device 1 and the sensor unit 27 are the same. If the control unit 21 determines that the patterns of change in the detected values ​​of the acceleration sensor or pulse sensor in the ring device 1 and the electronic watch 2 are different, it determines that the electronic watch 2 is not being worn by the user. Therefore, even if the user has removed the electronic watch 2 but the distance between the ring device 1 and the electronic watch 2 is short (only about 20 cm), for example, even if the watch is placed on a desk where the user is working, it is possible to accurately determine whether the electronic watch 2 is being worn or not.

[0053] Note that the wear / detachment determination process shown in FIG. 5 was described assuming that the ring device 1 and the electronic watch 2 are worn on the same hand, but they may also be worn on different hands. Therefore, the control unit 21 may determine whether the ring device 1 and the electronic watch 2 are worn on the same hand, and based on the determination result, change the radio wave intensity threshold used to determine whether the user is wearing the electronic watch 2. For example, if it is determined that the ring device 1 and the electronic watch 2 are not worn on the same hand, the radio wave intensity threshold used to determine whether the user is wearing the electronic watch 2 may be lowered compared to when it is determined that the ring device 1 and the electronic watch 2 are worn on the same hand. For example, if it is determined that the ring device 1 and the electronic watch 2 are not worn on the same hand, in step S13, it determines whether the user is wearing the electronic watch 2 based on whether radio waves of a radio wave intensity of at least 1 meter corresponding to a distance of 1 meter between the ring device 1 and the electronic watch 2 are continuously received from the ring device 1 for at least a predetermined time (e.g., 5 to 10 seconds). This allows the wearing / removal determination to be performed using an appropriate threshold value depending on whether the ring device 1 and the electronic timepiece 2 are worn on the same hand (left or right).

[0054] Furthermore, if the ring device 1 and the electronic watch 2 are worn on different hands, the patterns of change in acceleration for both may be completely different. Therefore, if the ring device 1 and the electronic watch 2 are capable of measuring acceleration and pulse rate, the control unit 21 may determine whether the ring device 1 and the electronic watch 2 are worn on the same hand, and if it determines that they are worn on different hands, it may determine whether the electronic watch 2 is worn or removed based on the results of a comparison of the patterns of change in pulse rate between the ring device 1 and the electronic watch 2, without using acceleration.

[0055] Here, whether the electronic timepiece 2 is worn on the right or left hand is preset in the electronic timepiece 2 (stored in the storage unit 22). The default is the left hand, but the user can also set it to the right hand by operating the operation unit 24. Information on whether the ring device 1 is worn on the right or left hand may be preset in the electronic timepiece 2 (stored in the storage unit 22), or may be obtained from the ring device 1 via wireless communication. The ring device 1 can determine whether it is worn on the right or left hand by fingerprint authentication.

[0056] Furthermore, in the above-described wearing / removing determination process, if the electronic watch 2 is equipped with both an acceleration sensor and a pulse sensor, the control unit 21 determines that the user is wearing the electronic watch 2 if, in addition to the radio wave condition of step S13, both the acceleration condition of step S17 and the pulse rate condition of step S21 are met. However, it may also be determined that the user is wearing the electronic watch 2 if, in addition to the radio wave condition of step S13, either the acceleration condition of step S17 or the pulse rate condition of step S21 is met. Furthermore, wearing / removing determination may be made based solely on the radio wave condition of S13, regardless of whether an acceleration sensor and pulse sensor are present.

[0057] In the above embodiment, a pulse sensor is used to acquire biometric information, and whether or not the electronic timepiece 2 is being worn by the user is determined based on the pattern of changes in pulse rate measured by the pulse sensors provided in the ring device 1 and the electronic timepiece 2. However, the biometric information used to determine whether or not the electronic timepiece 2 is being worn by the user is not limited to pulse rate. For example, the biometric information may be a pulse wave detected by a pulse wave sensor, or a detection value acquired from another biometric sensor.

[0058] As explained above, the control unit 21 of the electronic watch 2 obtains information indicating the radio wave strength in wireless communication with the ring device 1 via the communication unit 23, and determines whether the radio wave strength is above a predetermined threshold value, based on the result of the determination. Therefore, it is possible to determine whether the electronic watch 2 is being worn or removed with a relatively simple configuration.

[0059] For example, the control unit 21 determines whether the electronic timepiece 2 is being worn by the user based on whether the information indicating that the radio wave strength in wireless communication with the ring device 1 is above a predetermined threshold is continuously acquired for a predetermined time or longer. Therefore, it is possible to determine whether the electronic timepiece 2 is being worn or removed with a relatively simple configuration.

[0060] Furthermore, for example, the control unit 21 can change the threshold value depending on whether the ring device 1 and the electronic watch 2 are worn on the same hand, and thereby determine whether the electronic watch 2 is worn or removed using an appropriate threshold value depending on whether the ring device 1 and the electronic watch 2 are worn on the same hand.

[0061] Furthermore, if the ring device 1 and the electronic watch 2 are each capable of measuring acceleration, the control unit 21 compares the patterns of change in acceleration measured by the ring device 1 and the electronic watch 2, and determines whether the electronic watch 2 is being worn by the user based on the comparison results. Therefore, using the acceleration measurement functions provided in the ring device 1 and the electronic watch 2 makes it possible to more accurately determine whether the electronic watch 2 is being worn or not.

[0062] Furthermore, if both the ring device 1 and the electronic watch 2 are capable of measuring biological information, the control unit 21 further compares the patterns of changes in the biological information measured by the ring device 1 and the electronic watch 2, and determines whether the electronic watch 2 is being worn by the user based on the comparison results. Therefore, using the biological information measurement functions provided in the ring device 1 and the electronic watch 2, it is possible to more accurately determine whether the electronic watch 2 is being worn or not.

[0063] Furthermore, if the ring device 1 and the electronic watch 2 are each capable of measuring acceleration and biometric information, the control unit 21 determines whether the ring device 1 and the electronic watch 2 are worn on different hands, and if it determines that they are worn on different hands, determines whether the electronic watch 2 is being worn by the user based on a comparison of the patterns of changes in the biometric information measured by the ring device 1 and the electronic watch 2. This makes it possible to more accurately determine whether the electronic watch 2 is being worn or not.

[0064] The above-described embodiment is a preferred example of an embodiment of the present invention, and the present invention is not limited to this.

[0065] For example, the threshold value of the radio wave intensity used in step S13 of FIG. 5 was described as a radio wave intensity corresponding to a distance of 20 cm, but this threshold value is not limited to that used in the above embodiment. For example, the ring device 1 and the electronic watch 2 may be worn by the user in advance, and the radio wave intensity of the wireless communication from the ring device 1 acquired by the electronic watch 2 may be measured, and the measurement result may be determined as the threshold value and stored in the storage unit 22. This allows the user to set an optimal threshold value that suits the position, size, etc. of the finger on which the ring device 1 is worn. Furthermore, the duration threshold value (predetermined time) used in step S13 is not limited to that used in the above embodiment, and may be set by the user operating the operation unit 24, for example.

[0066] In the above embodiment, the wireless communication between the ring device 1 and the electronic watch 2 is described as BLE communication, but the wireless communication method is not particularly limited. Also, for example, in the above embodiment, the radio wave strength of BLE communication is used to determine whether the electronic watch 2 is worn or removed, but instead, the radio wave strength of Wi-Fi (registered trademark) may be measured and used to determine whether the electronic watch 2 is worn or removed.

[0067] Furthermore, in the above embodiment, the wearable device of the present invention is described as an electronic watch 2, and the electronic device is a ring device 1, but the wearable device and electronic device of the present invention are not limited to this example. For example, the electronic device may be a smartphone, tablet, etc. For example, if the smartphone is held and operated in the left hand while wearing the electronic watch 2, the distance between the smartphone and the electronic watch 2 does not change while the smartphone is being held, so the present invention can be applied.

[0068] In the above embodiment, the electronic device is described as being worn on the hand, but the position where the electronic device is worn is not limited to the hand. For example, the electronic device may be worn on the waist (e.g., a motion sensor), and whether the electronic device 2 is worn or not may be determined based on the radio wave intensity between the electronic device worn on the user's waist and the electronic watch 2.

[0069] Furthermore, in the above embodiment, an example is described in which the case where the wearing / removal of the electronic watch 2 is determined on the assumption that the ring device 1 is always worn is assumed, but the wearing / removal of the ring device 1 may also be determined on the assumption that the electronic watch 2 is always worn.

[0070] Furthermore, the operations performed by the control unit 21 in response to the determination result of whether or not the electronic timepiece 2 is worn by the user are not limited to the above-mentioned log acquisition and stop. For example, the control unit 21 may turn on the notification function and display function when it determines that the electronic timepiece 2 is worn by the user, and turn off the notification function and display function when it determines that the electronic timepiece 2 is not worn by the user.

[0071] Furthermore, in the above embodiment, in order to improve the accuracy of the determination of whether the electronic watch 2 is worn or removed based on the radio wave strength in the wireless communication between the ring device 1 and the electronic watch 2, the determination of whether the electronic watch 2 is worn or removed is performed using acceleration and biometric information in addition to the determination of whether the electronic watch 2 is worn or removed based on the radio wave strength. However, the determination of whether the electronic watch 2 is worn or removed may be performed using only a comparison of the accelerations of the ring device 1 and the electronic watch 2, or only a comparison of the biometric information of the ring device 1 and the electronic watch 2. For example, if both the ring device 1 and the electronic watch 2 are equipped with acceleration sensors, the control unit 21 performs the processing of steps S15 to S17 in FIG. 5 to compare the pattern of change in acceleration obtained from the ring device 1 with the pattern of change in acceleration obtained from the sensor unit 27. If the comparison shows that the patterns of change in acceleration are the same, the control unit 21 determines that the user is wearing the electronic watch 2. If the patterns of change in acceleration are not the same, the control unit 21 determines that the user is not wearing the electronic watch 2. 5 to compare the patterns of change in the biological information acquired from the ring device 1 with the patterns of change in the biological information acquired from the sensor unit 27. If the comparison shows that the patterns of change in the biological information from both are the same, the control unit 21 determines that the user is wearing the electronic watch 2, and if the patterns of change in the biological information are not the same, it determines that the user is not wearing the electronic watch 2. This makes it possible to accurately determine whether the electronic watch 2 is being worn or not using the ring device 1.

[0072] Furthermore, for example, in the above description, an example has been disclosed in which a semiconductor memory or the like is used as a computer-readable medium for the program according to the present invention, but this is not limiting. Portable recording media such as CD-ROMs can also be used as other computer-readable media. Furthermore, carrier waves can also be used as a medium for providing data for the program according to the present invention via a communication line.

[0073] The above describes embodiments of the wearable device, wearing / removing determination system, control method, and program of the present invention, but the scope of the present invention is not limited to the above-mentioned embodiments, and includes the scope of the invention described in the claims and its equivalents. [Explanation of symbols]

[0074] 1 ring device, 2 electronic clock, 21 control unit, 22 memory unit, 23 communication unit, 24 operation unit, 25 display unit, 26 timekeeping unit, 27 sensor unit

Claims

1. a communication unit capable of wirelessly communicating with a predetermined electronic device; A control unit; A wearable device comprising: the control unit acquires information indicating radio wave intensity in wireless communication with the electronic device via the communication unit, and determines whether the wearable device is being worn by a user based on a determination result of whether the radio wave intensity is equal to or greater than a predetermined threshold. Wearable devices.

2. the predetermined electronic device is a second wearable device different from the wearable device; The wearable device according to claim 1 .

3. the control unit determines whether the wearable device is worn by a user based on whether information on the radio wave intensity equal to or greater than the predetermined threshold has been continuously acquired for a predetermined time period or more. The wearable device according to claim 1 .

4. the control unit changes the threshold value depending on whether the electronic device and the wearable device are worn on the same hand, left or right. The wearable device according to claim 1 .

5. When the electronic device and the wearable device are each capable of measuring acceleration, the control unit further compares patterns of change in acceleration measured by the electronic device and the wearable device; determining that the wearable device is being worn by the user when it is determined that the radio wave intensity is equal to or greater than the predetermined threshold and the change pattern of the acceleration is consistent between the electronic device and the wearable device; The wearable device according to claim 1 .

6. When the electronic device and the wearable device are each capable of measuring biological information, the control unit further compares patterns of changes in the biological information measured by the electronic device and the wearable device; determining that the wearable device is being worn by the user when it is determined that the radio wave intensity is equal to or greater than the predetermined threshold and that the change patterns of the biological information match between the electronic device and the wearable device; The wearable device according to claim 1 .

7. The control unit If the electronic device and the wearable device are capable of measuring acceleration and biological information, respectively, it is further determined whether the electronic device and the wearable device are worn on different hands, respectively; If it is determined that the electronic device and the wearable device are worn on different hands, it determines whether the wearable device is worn by the user based on a determination result of whether the radio wave intensity is equal to or greater than the predetermined threshold and a comparison result of patterns of changes in the biological information measured by the electronic device and the wearable device. The wearable device according to claim 1 .

8. A wearable / unwearable device determination system including a predetermined electronic device and a wearable device having a communication unit capable of wirelessly communicating with the electronic device, The wearable device includes: a control unit that acquires information indicating radio wave intensity in wireless communication with the electronic device via the communication unit, and determines whether the wearable device is being worn by a user based on a determination result of whether the radio wave intensity is equal to or greater than a predetermined threshold; A fitting / unfitting determination system.

9. a communication unit capable of wirelessly communicating with a predetermined electronic device; A control unit; A control unit of a wearable device comprising: acquiring information indicating radio wave intensity in wireless communication with the electronic device by the communication unit, and determining whether the wearable device is being worn by a user based on a determination result of whether the radio wave intensity is equal to or greater than a predetermined threshold; Method for determining fit.

10. A computer of a wearable device having a communication unit capable of wirelessly communicating with a predetermined electronic device, acquiring information indicating radio wave intensity in wireless communication with the electronic device by the communication unit, and determining whether the wearable device is being worn by a user based on a determination result of whether the radio wave intensity is equal to or greater than a predetermined threshold; A program for executing a process.

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