Wearable devices, notification methods, and programs

Abstract

The present invention provides a wearable device, a notification method, and a program that can notify the user to charge the device when it is ready to do so. [Solution] The wearable device 1 comprises a notification unit that notifies the user of information, a location information acquisition unit that acquires the user's location information, a battery 106 which is a secondary battery that stores power charged from an external power source, a battery level detection unit 107 that detects the remaining battery level of the secondary battery, and a control unit 101 that executes a notification by the notification unit to encourage charging of the secondary battery based on the location information and the remaining battery level.

Description

Technical Field

[0001] The present invention relates to a wearable device, a notification method, and a program.

Background Art

[0002] Conventionally, there are wearable devices that are used by being worn on the body by a user and have various functions. Among the functions provided by wearable devices, there are some that require a large amount of power, such as those that are executed by communicating and connecting with a smartphone, or those that have a long operating time.

[0003] Therefore, for example, Patent Document 1 describes a technique for estimating the necessity of charging a wearable terminal based on the number of times of charging the battery of an information terminal or the number of connections with an information terminal device, and notifying the user to charge as needed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, for example, there are cases where the user is out and cannot charge even if notified at a timing when there is no charging spot nearby.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a wearable device, a notification method, and a program capable of notifying the user to charge taking into account the timing when charging is possible.

Means for Solving the Problems

[0007] To solve the above problems, the wearable device according to the present invention is The notification unit that informs users of information, A location information acquisition unit that acquires the user's location information, A secondary battery that stores power charged from an external power source, A battery level detection unit for detecting the remaining battery level of the secondary battery, The system includes a control unit that, based on the location information and the remaining battery level, executes a notification prompting the notification unit to charge the secondary battery. [Effects of the Invention]

[0008] According to the present invention, the user can be notified to charge the device when it is ready for charging. [Brief explanation of the drawing]

[0009] [Figure 1] This is a block diagram showing the functional configuration of a wearable device according to the present invention. [Figure 2] This figure shows an example of the appearance of a wearable device. [Figure 3] This is a flowchart showing the flow of behavioral pattern memory processing according to the first embodiment. [Figure 4] This is a flowchart showing the notification processing flow according to the first embodiment. [Figure 5] This is a flowchart showing the flow of behavioral pattern memory processing according to the second embodiment. [Figure 6] This is a flowchart showing the notification processing flow according to the second embodiment. [Modes for carrying out the invention]

[0010] The embodiments for carrying out the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention. Therefore, the technical scope of the present invention is not limited to the embodiments and illustrated examples below.

[0011] First, the configuration of the wearable device 1 according to the first embodiment of the present invention will be described. Figure 1 is a block diagram schematically showing the functional configuration of wearable device 1. Figure 2 is a diagram showing the external appearance of wearable device 1. As shown in Figure 2, the wearable device 1 of this embodiment is a wristwatch equipped with a time display function.

[0012] As shown in Figure 1, the wearable device 1 is comprised of a control unit 101, a memory unit 102, an operation unit 103, an analog display unit 104, a digital display unit 105, a battery 106, a battery level detection unit 107, an acceleration sensor 108, a gyro sensor 109, a GPS sensor 110, a timing unit 111, an audio output unit 112, a vibrator 113, and a communication unit 114, with each unit connected via a bus 115.

[0013] The control unit 101 consists of a CPU (Central Processing Unit) and RAM (Random Access Memory). The control unit 101 controls the operation of each part of the wearable device 1 by loading a program from the storage unit 102 into the RAM and executing it, thereby providing a time display function and other functions. Furthermore, the control unit 101, in cooperation with the program read from the storage unit 102, performs various processes such as notification processing to encourage charging, which will be described later.

[0014] The memory unit 102 is composed of non-volatile memory and the like. The memory unit 102 stores programs that control the operation of the wearable device 1, such as a time display function, programs for executing various processes including notification processing, and various data. In particular, the memory unit 102 functions as a location information storage unit that stores location information (e.g., longitude and latitude, etc.) of the location where the user performed the charge, as will be described later.

[0015] The control unit 103 includes a crown, push-button switches, etc. The control unit 103 receives operations from the user and outputs a signal corresponding to the operation to the control unit 101.

[0016] The analog display unit 104 is composed of a second hand 43, a minute hand 44, an hour hand 45, motors for moving these hands, a wheel train mechanism, etc., as shown in FIG. 2. The second hand 43, the minute hand 44, and the hour hand 45 rotate around the axis at the center of the dial 41, and indicate the time by pointing to the hour characters 42 (indexes) and scales arranged along the circumferential direction on the dial 41.

[0017] The digital display unit 105 is composed of a display screen such as a liquid crystal display or an organic EL (Electro Luminescence), and a backlight that emits light with a light source such as an LED (Light Emitting Diode) that emits light under the control of the control unit 101, and performs various displays according to the instructions of the control unit 101.

[0018] In FIGS. 1 and 2, the wearable device 1 is illustrated by taking a timepiece (referred to as a combination timepiece) having both the analog display unit 104 and the digital display unit 105 as an example, but it is not limited to this example. The wearable device 1 may be a so-called analog timepiece having only the analog display unit 104 as a display unit. Alternatively, the wearable device 1 may be a digital timepiece (such as a smartwatch) having only the digital display unit 105 as a display unit, and performing time display and information display on the digital display unit 105. In the case of a digital timepiece, for example, a region corresponding to the entire surface of the dial 41 in FIG. 2 becomes the digital display unit 105.

[0019] The battery 106 is a rechargeable secondary battery that is connected to a charging unit (not shown) to store electric power, and supplies the charged electric power to each part of the wearable device 1. The battery level detection unit 107 detects the remaining amount of the battery 106 and outputs the detection result to the control unit 101.

[0020] The acceleration sensor 108 detects the acceleration of the wearable device 1 and outputs the detection result to the control unit 101.

[0021] The gyro sensor 109 detects the angular velocity of the wearable device 1 and outputs the detection result to the control unit 101.

[0022] The GPS sensor 110 acquires the current location information of the wearable device 1 by receiving signals from GPS (Global Positioning System) satellites and outputs it to the control unit 101.

[0023] The timing unit 111 includes an oscillation circuit, a frequency divider circuit, a timing circuit, etc., and measures the current date and time, and outputs the measurement result to the control unit 101.

[0024] The audio output unit 112 outputs voice, notification sounds (alert sounds), etc., in accordance with the control operation of the control unit 101. The vibrator 113 generates vibrations according to the control operation of the control unit 101.

[0025] The communication unit 114 performs communication control for communicating with the mobile terminal 2. For example, the communication unit 114 connects to the paired mobile terminal 2 using BLE (Bluetooth® Low Energy) or the like, and performs data transmission and reception. Mobile device 2 is a terminal device such as a smartphone or tablet owned by the user of wearable device 1.

[0026] The wearable device 1 may also be configured to include, for example, a barometer (altimeter), thermometer, hygrometer, pulse sensor, etc.

[0027] Next, the behavioral pattern memory processing and notification processing by the wearable device 1 according to the first embodiment will be described. Figure 3 is a flowchart showing the flow of the behavior pattern memory processing according to the first embodiment. Figure 4 is a flowchart showing the flow of the notification processing according to the first embodiment.

[0028] The control unit 101 determines whether the user has started charging the battery 106 (step S11a). For example, if the battery level detection unit 107 detects an increase in the remaining charge of the battery 106, the control unit 101 determines that the user has started charging the battery 106. If charging of the battery 106 has not been started (step 11a; No), the control unit 101 proceeds to step S11a and continues to wait until the user charges the battery 106.

[0029] If the user starts charging the battery 106 (step S11a; Yes), the control unit 101 acquires the user's location information at the time of charging initiation from, for example, the GPS sensor 110 and stores it in the storage unit 102 (step S12a).

[0030] The control unit 101 performs this behavior pattern memory processing in the background, at least from the initial startup of the wearable device 1. The control unit 101 then terminates the behavior pattern memory processing when, for example, the amount of location information stored in the memory unit 102 reaches a predetermined value that is sufficient to fully understand the user's behavior pattern.

[0031] For example, if the execution of the behavior pattern memory processing continues for a predetermined period (e.g., one month) or longer, the control unit 101 determines that the user's behavior pattern has reached a predetermined value that allows for sufficient understanding. Alternatively, if the number of times location information has been stored reaches a predetermined number (for example, 30 times) or more, the control unit 101 determines that the number has reached a predetermined value that allows for a sufficient understanding of the user's behavior pattern.

[0032] Next, the notification process will be explained based on Figure 4. In the notification process, the control unit 101 first determines whether the remaining charge of the battery 106 is less than a predetermined value based on the detection result of the battery level detection unit 107 (step S21a). If the value is less than a predetermined value (step S21a; Yes), the control unit 101 determines whether the amount of location information stored in the storage unit 102 is greater than or equal to a predetermined value that is sufficient to fully grasp the user's behavior pattern (step S22a).

[0033] If the value is greater than or equal to a predetermined value (step S22a; Yes), the control unit 101 compares the current position based on the measurement result of the GPS sensor 110 with the position information stored in the storage unit 102. In this embodiment, the control unit 101 determines whether the distance between the current position based on the measurement result of the GPS sensor 110 and the position information stored in the storage unit 102 is within a predetermined distance (for example, 200m) (step S23a).

[0034] If the distance is within a predetermined range (step S23a; Yes), the control unit 101 gives a notification prompting the battery 106 to be charged (step S24a).

[0035] As mentioned above, wearable devices can be categorized into digital, combination, and analog types, and the appropriate notification method differs depending on the type. For example, if the wearable device 1 is digital, the area corresponding to the entire surface of the dial 41 is the digital display unit 105. Therefore, it is preferable to provide information using characters. On the other hand, if the wearable device 1 is a combination type, there is a digital display unit 105, but it is small. Therefore, notification using icons is preferable to notification using text. Furthermore, if the wearable device 1 is analog, there is no digital display unit 105, and notification cannot be provided by displaying characters or icons. For this reason, notification by sound, voice, vibration, or movement of a hand (for example, minute hand 44) ​​is preferred.

[0036] In detail, the control unit 101 causes characters or icons to be displayed on the digital display unit 105, outputs notification sounds or voices of a predetermined pattern from the audio output unit 112, outputs vibrations of a predetermined pattern from the vibrator 113, and operates the hands of the analog display unit 104 (for example, the minute hand 44) ​​in a predetermined pattern. In the present invention, the analog display unit 104, digital display unit 105, audio output unit 112, vibrator 113, minute hand 44, etc., described above function as notification units that prompt charging of the battery 106.

[0037] The notification methods corresponding to the type of wearable device 1 are not limited to the above-described correspondence. For example, even if the type of wearable device 1 is digital or combination, notification may be provided by sound or vibration. Alternatively, notification may be provided by outputting an audio message instead of a sound.

[0038] Furthermore, if the remaining charge of the battery 106 is above a predetermined value (step S21a; No), or if the distance between the current location and the location information stored in the memory unit 102 is not within a predetermined distance (step S23a; No), it is not a suitable time to issue a notification prompting the battery 106 to be charged. Therefore, the control unit 101 proceeds to step S21a and waits.

[0039] Furthermore, if the amount of location information stored in the memory unit 102 is less than a predetermined value (step S22a; No), the control unit 101 cannot determine whether it is a suitable time to notify the user to charge the battery 106. On the other hand, since the remaining charge of the battery 106 is less than a predetermined value and charging is necessary, the system proceeds to step S24a and notifies the user to charge the battery 106.

[0040] As described above, the wearable device 1 according to this embodiment includes a notification unit that notifies the user of information, a GPS sensor 110 that functions as a location information acquisition unit that acquires the user's location information, a battery level detection unit 107 that detects the remaining battery level of a secondary battery 106, and a control unit 101 that executes a notification prompting the notification unit to charge the battery 106 based on the location information and the remaining battery level. In particular, the control unit 101 of the wearable device 1 according to this embodiment includes a storage unit 102 that functions as a location information storage unit that stores location information of the location where the battery 106 has been charged, and the control unit 101 executes a notification prompting the notification unit to charge the battery 106 based on the result of comparing the location information acquired by the location information acquisition unit with the location information stored in the storage unit 102. With this configuration, the control unit 101 can notify the user to charge the battery 106 at a time when charging is possible at a spot where charging has been performed before.

[0041] In the above example, a configuration was given in which location information of a position where the battery 106 has been charged once is stored, but the system is not limited to this. That is, the accuracy of the information may be further improved by storing only the location information of a position where the battery 106 has been charged a predetermined number of times or more.

[0042] Furthermore, while the above example illustrates a configuration in which, in the behavior pattern memory processing, the battery 106 is determined to be charged based on the detection result of the battery level detection unit 107, and the location information at that time is stored, the system is not limited to this configuration.

[0043] Generally, when charging a wearable device 1, the user removes the wearable device 1 from their body. Therefore, for example, if the output value of the accelerometer 108 or gyro sensor 109 changes within a predetermined time, the control unit 101 may determine that the wearable device 1 is being worn and the battery 106 is not being charged. On the other hand, if the output value of the accelerometer 108 or gyro sensor 109 does not change within a predetermined time, the control unit 101 may determine that the wearable device 1 has been removed and the battery 106 is being charged, and store the location information at that time.

[0044] Alternatively, if the wearable device 1 is equipped with a pulse sensor, it may be determined whether or not the wearable device 1 has been removed based on the output value of the pulse sensor. Alternatively, if the wearable device 1 is equipped with a tilt switch, it may be determined whether or not the wearable device 1 has been removed based on the output value from the tilt switch. In this configuration, the control unit 101 functions as a device information acquisition unit that acquires device information, which is information about whether or not the wearable device 1 is being worn.

[0045] Furthermore, while the above example illustrates a configuration in which the control unit 101 automatically stores location information in the storage unit 102, the system is not limited to this configuration. For example, the user may operate the control unit 103 in a position where the battery 106 can be charged, and the control unit 101 may store the location information based on the measurement result of the GPS sensor 110 at the time the control unit 103 was operated in the storage unit 102. With this configuration, the registration of a charging-ready position is performed based on the user's operational instructions, making it more reliable than the determination made by the control unit 101. In addition, the user can select the position in which they want to receive notifications prompting them to charge the battery 106.

[0046] Furthermore, while the above example illustrates a configuration in which the location information based on the measurement results of the GPS sensor 110 is compared with the location information stored in the memory unit 102, and if they are within a predetermined distance, the notification unit issues a notification prompting the battery 106 to be charged, the configuration is not limited to this, and a prompt may be issued only when both pieces of location information match. According to this configuration, if the vehicle passes near a charging location but does not have time to stop and charge the battery 106, the notification will be suppressed.

[0047] Next, we will describe the wearable device 1 according to the second embodiment. The wearable device 1 according to the second embodiment differs from the first embodiment in that the memory unit 102 functions as a timing memory unit that stores the timing of when the user uses a predetermined function of the wearable device 1, and the control unit 101 prompts the user to charge the battery 106 at timings other than when the predetermined function is used.

[0048] The behavioral pattern memory processing and notification processing by the wearable device 1 according to the second embodiment will be explained with reference to Figures 5 and 6. In the following, detailed explanations of aspects common to the behavioral pattern memory processing and notification processing by the wearable device 1 according to the first embodiment shown in Figures 3 and 4 will be omitted.

[0049] In the behavior pattern storage processing according to the second embodiment, the control unit 101 first determines whether or not the user has started using a predetermined function (step S11b). The specified functions are, for example, power-hungry functions such as motion measurement functions using the acceleration sensor 108, gyro sensor 109, and GPS sensor 110, and screen display functions using the digital display unit 105.

[0050] When a user starts using a predetermined function (step S11b; Yes), the control unit 101 stores the start timing (day of the week and time zone) in the storage unit 102 based on the measurement result of the timing unit 111 (step S12b). Then, when the user finishes using the predetermined function (step S13b; Yes), the control unit 101 stores the user's end timing in the storage unit 102 (step S14b).

[0051] If the user has not started using the predetermined function (step S11b; No), the control unit 101 determines whether the user has started charging the battery 106 (step S15b). The detection of the start of charging the battery 106 is the same as in the first embodiment, so a detailed explanation is omitted.

[0052] If charging of the battery 106 has not been started (step 15b; No), the control unit 101 proceeds to step S11b and continues to wait until the user uses a predetermined function or starts charging the battery 106. When the user starts charging the battery 106 (step S15b; Yes), the control unit 101 stores the charging start timing in the storage unit 102, in addition to the position information at the charging start timing (step S16b). Then, when the control unit 101 detects that the battery 106 has finished increasing in charge and charging has ended (step S17b; Yes), it stores the charging end timing in the storage unit 102 (step S18b).

[0053] As described above, in the behavior pattern memory processing, the control unit 101 according to the second embodiment stores not only the location information at which charging of the battery 106 was started, but also the timing at which the user uses a predetermined function and the timing at which the battery 106 is charged.

[0054] Furthermore, the control unit 101 according to the second embodiment, like the control unit 101 according to the first embodiment, performs behavior pattern memory processing in the background at least from the initial startup of the wearable device 1. The control unit 101 then terminates the behavior pattern storage process when the amount of data stored in the memory unit 102 for the start and end timings (usage timings) of predetermined functions, the amount of data stored for the start and end timings of battery charging 106, and location information reaches predetermined values ​​that allow for a sufficient understanding of the user's behavior patterns.

[0055] Next, the notification process according to the second embodiment will be explained with reference to Figure 6. The control unit 101 determines whether the remaining charge of the battery 106 is less than a predetermined value based on the detection result of the battery level detection unit 107 (step S21b). If the value is less than a predetermined value (step S21b; Yes), it is determined whether the amount of memory stored in the memory unit 102 for the timing of the use of a predetermined function, and the amount of memory stored for the start and end timings of charging the battery 106 and the location information are greater than or equal to a predetermined value (step S22b).

[0056] If the value is greater than or equal to a predetermined value (step S22b; Yes), the control unit 101 determines whether the current day of the week and time are high-frequency usage timings for predetermined functions stored in the storage unit 102 (step S23b).

[0057] In this invention, a high-frequency usage timing refers to a timing among the usage timings of a predetermined function in which the frequency is higher than a predetermined usage standard. More specifically, for example, a high-frequency usage timing may be a timing in which a predetermined function is used a predetermined number of times or more, or a timing in which the number of times a predetermined function is used is predetermined or more than other timings.

[0058] If it is not a high-frequency usage timing (step S23b; No), the control unit 101 determines whether the distance between the current position based on the measurement result of the GPS sensor 110 and the position information stored in the storage unit 102 is within a predetermined distance (step S24b). If the distance is within a predetermined range (step S24b; Yes), the control unit 101 gives a notification prompting the battery 106 to be charged (step S25b).

[0059] On the other hand, if it is a high-frequency usage timing for a predetermined function (step S23b; Yes), it is not a suitable timing to issue a notification prompting the battery 106 to be charged. Also, similar to the first embodiment, if the remaining charge of the battery 106 is above a predetermined value (step S21b; No), or if the distance between the current location based on the measurement result of the GPS sensor 110 and the location information stored in the storage unit 102 is not within a predetermined distance (step S24b; No), it is also not a suitable timing for notification. Therefore, if any of these conditions are met, the control unit 101 transitions to step S21b and waits.

[0060] Furthermore, if the amount of information stored in the memory unit 102 regarding the timing of the use of a predetermined function, and the amount of information stored regarding the start and end timings of charging the battery 106, as well as the location information, is less than a predetermined value (step S21b; No), the control unit 101 proceeds to step S25b, similar to the first embodiment.

[0061] As described above, in the wearable device 1 according to the second embodiment, the control unit 101 functions as a timing acquisition unit that acquires the timing of use of a predetermined function, and in addition to location information and battery level, controls the notification unit to prompt charging of the secondary battery based on the timing of use. In particular, by making the storage unit 102 a usage timing storage unit that stores high-frequency usage timings, and by having the notification unit prompt charging of the battery 106 at timings other than high-frequency usage timings, the notification unit can prompt charging at a timing that is more suitable for charging the battery 106.

[0062] Furthermore, when acquiring the timing of use of particularly power-hungry functions, it is preferable for the notification unit to provide notification a predetermined time before the start of high-frequency use. The predetermined time is, for example, the time required to complete charging of the battery 106 based on the detection result of the battery level detection unit 107. This configuration prevents the battery from running out of charge while a power-hungry function is being used.

[0063] Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the embodiments described above, but includes the scope of the invention as described in the claims and its equivalents.

[0064] For example, the above example illustrates a configuration in which notification is basically performed by the notification unit of the wearable device 1, but it is not limited to this. For example, notification may be performed by both the wearable device 1 and the mobile terminal 2 connected by the communication unit 114 of the wearable device 1, or notification may be performed only by the mobile terminal 2.

[0065] Furthermore, the method of notification may be changed depending on the remaining charge of the battery 106. For example, if the remaining charge of the battery 106 is below a predetermined threshold and the notification unit is the audio output unit 112, the sound may be made louder than when the predetermined threshold is exceeded. Also, if the remaining charge of the battery 106 is below a predetermined threshold and the notification unit is the vibrator 113, the vibration may be made stronger than when the predetermined threshold is exceeded.

[0066] Furthermore, although the above explanation used the example of a wristwatch as the wearable device 1, the wearable device 1 is not particularly limited as long as it is a device worn by the user and powered by electricity supplied from a secondary battery 106 that stores power.

[0067] Furthermore, while the above example illustrates a configuration in which the wearable device 1 is equipped with a GPS sensor 110 and the GPS sensor 110 functions as a location information acquisition unit that acquires the user's location information, the invention is not limited to this configuration. For example, the communication unit 114 may be configured to function as a location information acquisition unit by acquiring location information from the mobile terminal 2.

[0068] Furthermore, while the above example illustrates a configuration in which behavioral pattern memory processing is performed only once, it is not limited to this configuration. Since human behavioral patterns change over time, simply memorizing the behavioral pattern once may not result in notifications prompting charging of the battery 106 at the appropriate time. Therefore, for example, the system may be configured to perform behavior pattern memory processing at predetermined intervals and update the location information and usage timing stored in the memory unit 102 as needed. Specifically, notification processing for the current week may be performed based on the content of the behavior pattern memory processing performed in the previous week. Alternatively, the system may be configured to re-execute the behavior pattern memory processing at any time of the user's choosing to update the location information and usage timing stored in the memory unit 102. Furthermore, the memory unit 102 may be configured to continue processing the behavioral pattern even after the amount of data stored exceeds a predetermined value.

[0069] Furthermore, when the wearable device 1 is operated to automatically acquire biometric information such as heart rate and sleep status, the user cannot remove the wearable device 1. Therefore, when the user inputs the time period during which the operation will be performed, the notification unit may be configured not to provide notification during that time period, even if the predetermined conditions described above are met.

[0070] Furthermore, in the notification process according to the second embodiment, an example was given in which a notification is given to charge the battery 106 if the current day and time are not a high-frequency usage timing and the distance between the current location and the location information stored in the storage unit 102 is within a predetermined distance, but the invention is not limited to this. Generally, the times when charging is most frequent are when the user is most likely to be at home, and therefore when charging is most possible. Furthermore, the timing of using specific functions and the timing of charging are often different. Therefore, if the current day of the week and time match the charging timing stored in steps S16b and S18b, the system may notify the user to charge the battery 106 without performing the determination in steps S23b and 24b.

[0071] Furthermore, the detailed configuration and operation of the wearable device 1 can also be modified as appropriate without departing from the spirit of the invention. [Explanation of symbols]

[0072] 1...Wearable device, 101...Control unit (wearing information acquisition unit, timing acquisition unit), 102...Storage unit (location storage unit, timing storage unit), 103...Operation unit, 104...Analog display unit (notification unit), 105...Digital display unit (notification unit), 106...Battery (secondary battery), 107...Battery level detection unit, 110...GPS sensor (location information acquisition unit), 112...Audio output unit (notification unit), 113...Vibrator (notification unit), 114...Communication unit (location information acquisition unit), 44...Minute hand (notification unit)

Claims

1. The notification unit that informs users of information, A location information acquisition unit that acquires the user's location information, A secondary battery that stores power charged from an external power source, A battery level detection unit for detecting the remaining battery level of the secondary battery, A wearable device comprising: a control unit that, based on the location information and the remaining battery level, executes a notification prompting the notification unit to charge the secondary battery.

2. It includes a location storage unit that stores the location information of the location where the secondary battery was charged by the user, The wearable device according to claim 1, wherein the control unit performs a notification to prompt the notification unit to charge the secondary battery based on the result of comparing the location information acquired by the location information acquisition unit with the location information stored in the location storage unit.

3. The wearable device according to claim 2, wherein the location storage unit stores location information obtained when the secondary battery has been charged by the user a predetermined number of times or more.

4. The wearable device is equipped with a wearable information acquisition unit that acquires wearable information, which is information on whether or not the wearable device is being worn by the user. The location storage unit stores the location information at times when the wearable device is not being worn by the user. The wearable device according to claim 2, wherein the control unit performs a notification to prompt the notification unit to charge the secondary battery based on the result of comparing the location information acquired by the location information acquisition unit with the location information stored in the location storage unit.

5. It is equipped with an operating unit that accepts operations from the user, The position storage unit stores position information of a predetermined position where the user operated the operation unit. The wearable device according to claim 2, wherein the control unit performs a notification to prompt the notification unit to charge the secondary battery based on the result of comparing the location information acquired by the location information acquisition unit with the location information stored in the location storage unit.

6. The wearable device according to any one of claims 2 to 5, wherein the control unit executes a notification prompting the secondary battery to be charged by the notification unit when the distance between the location information acquired by the location information acquisition unit and the location information stored in the location storage unit is within a predetermined distance.

7. It includes a timing acquisition unit that acquires the timing for using a predetermined function, The wearable device according to any one of claims 1 to 5, wherein the control unit performs notification to prompt the notification unit to charge the secondary battery based on the usage timing.

8. The system includes a timing storage unit that stores high-frequency usage timings, which are usage timings in which the frequency of use of the predetermined function by the user is higher than a preset usage criterion. The wearable device according to claim 7, wherein the control unit prompts the secondary battery to be charged by the notification unit at timings other than the high-frequency usage timing.

9. The wearable device according to claim 8, wherein the control unit performs a notification prompting the notification unit to charge the secondary battery a predetermined time before the high-frequency usage timing.

10. The wearable device according to claim 7, wherein the timing of use includes the day of the week and the time of day.

11. The notification unit that informs users of information, A location information acquisition unit that acquires the user's location information, A secondary battery that stores power charged from an external power source, A notification method for a wearable device comprising a battery level detection unit for detecting the remaining battery level of the secondary battery, A notification method comprising: a control step of executing a notification by the notification unit to prompt charging of the secondary battery based on the location information and the remaining battery level.

12. The notification unit that informs users of information, A location information acquisition unit that acquires the user's location information, A secondary battery that stores power charged from an external power source, A computer for a wearable device, comprising a battery level detection unit for detecting the remaining battery level of the secondary battery, A program that functions as a control unit that, based on the location information and the remaining battery level, executes a notification prompting the notification unit to charge the secondary battery.

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