JP2020060872A - Electronic device, control method and control program - Google Patents

Abstract

To properly operate low-temperature burn prevention control in an aspect that does not impair convenience of a user.SOLUTION: A wearable electronic device can be worn by a user, and includes: detection means for detecting a wearing state of the user; acquisition means for acquiring temperature information representing a temperature of the electronic device; setting means for setting a threshold value for the temperature represented by the temperature information acquired by the acquisition means, based on a detection result detected by the detection means; and control means for controlling an operating state of the electronic device, based on the temperature represented by the temperature information acquired by the acquisition means and the threshold value set by the setting means.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to an electronic device, a control method, and a control program.

  There is a technique for limiting the function of the electronic device in order to prevent the temperature rise of the electronic device when the temperature of the electronic device reaches a predetermined temperature from the viewpoint of preventing low-temperature burns of the user (for example, patents Reference 1).

JP, 2010-124246, A

  However, when the user does not wear the electronic device, the above-mentioned restrictions may impair the convenience of the user.

  For example, in cycling, when an electronic device is attached to a handle portion of a bicycle for use, the electronic device is likely to be exposed to direct sunlight and the temperature thereof tends to rise. At this time, it is inconvenient for the user if the control for limiting the function of the electronic device for preventing the low temperature burn is performed.

  Therefore, an object of the present invention is to enable the low-temperature burn prevention control to properly function in a mode that does not impair the convenience of the user.

In order to achieve the above object, in one aspect of the present invention, in a wearable electronic device that can be worn by a user,
Detection means for detecting the wearing state by the user,
Acquisition means for acquiring temperature information representing the temperature of the electronic device,
Based on the detection result by the detection means, setting means for setting a threshold value for the temperature represented by the temperature information acquired by the acquisition means,
Based on the temperature represented by the temperature information acquired by the acquisition unit, and the threshold value set by the setting unit, a control unit for controlling the operating state of the electronic device,
There is provided an electronic device comprising:

  According to one aspect of the present invention, the low-temperature burn prevention control can be appropriately operated in a mode that does not impair the convenience of the user.

It is a schematic diagram of an electronic device which is one example of the present invention. It is a block diagram which shows the hardware constitutions of an electronic device. It is a functional block diagram which shows the functional structure for performing low temperature burn prevention control processing. It is a schematic flowchart which shows an example of the process performed by the 2nd CPU of an electronic device. 5 is a schematic flowchart showing an example of processing executed by a first CPU of the electronic device in relation to FIG. 4.

  Hereinafter, each embodiment will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic diagram of an electronic device 1 which is an embodiment of the present invention. As shown in FIG. 1, the electronic device 1 of the present embodiment is configured as a wristwatch type device (smartwatch or the like). The electronic device 1 also includes a first display unit 18 and a second display unit 24 (described later), and the second display unit 24 is stacked on the first display unit 18. Further, a touch panel 17 described later is provided on the second display unit 24. Therefore, in the electronic device 1, it is possible to display the display of the second display section 24 on the display of the first display section 18 in an overlapping manner, and it is possible to perform a touch operation on the display content. . Hereinafter, the user is assumed to be the user of the electronic device 1. A user typically wears the electronic device 1 on his / her arm for use.

  FIG. 2 is a block diagram showing a hardware configuration of the electronic device 1. As illustrated in FIG. 2, the electronic device 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage unit 14, and an RTC (Real Time Clock). The unit 15, the drive 16, the touch panel 17, the first display unit 18, the first input unit 19, the Bluetooth (registered trademark) antenna 20, the Bluetooth module 21, and the wireless LAN (Local Area Network) antenna 22. , Wireless LAN module 23, second display unit 24, pulse sensor 25, geomagnetic sensor 26, acceleration sensor 27, gyro sensor 28, illuminance sensor 29, second input unit 30, GPS (Global). Posi a positioning system antenna 31, a GPS module 32, and a temperature sensor 34.

  The CPU 11 is composed of a first CPU 11A and a second CPU 11B. The first CPU 11A controls various functions of the electronic device 1 similar to a smartphone by performing various kinds of arithmetic processing and executing processing of an OS (Operating System). In the present embodiment, the first CPU 11A causes the first display unit 18 to display an incoming message of an electronic mail received via the Bluetooth module 21 or the wireless LAN module 23, a message regarding weather information, etc., or is input via the touch panel 17. Accept operations that In addition, the first CPU 11A recognizes a voice input via the first input unit 19 and performs other processes related to various functions implemented as functions similar to a smartphone.

  Further, in the present embodiment, the first CPU 11A acquires the time signal from the RTC unit 15 at a predetermined timing.

  The second CPU 11B executes a process of a specific program to instruct display on the second display unit 24, obtains detection results of various sensors, and other various functions implemented as functions of the wristwatch. Such processing is performed. In the present embodiment, the second CPU 11B calculates the time based on the time signal input from the first CPU 11A and causes the second display unit 24 to display the time, the day of the week, the date, and the like. The processing of a specific program executed by the second CPU 11B (calculation of time, etc.) is a simple operation compared to the processing of the OS executed by the first CPU 11A, so the processing load is small and it can be executed with low power consumption. Therefore, the hardware specifications required for the second CPU 11B are lower than those for the first CPU 11A.

  The ROM 12 can read data from each of the first CPU 11A and the second CPU 11B, and stores various programs executed by the first CPU 11A and the second CPU 11B and initial setting data. For example, the ROM 12 stores an OS program executed by the first CPU 11A, various programs executed under the control of the OS, or a specific program executed by the second CPU 11B (here, a built-in program that realizes a watch function). Store the program.

  The RAM 13 can read and write data from the first CPU 11A and the second CPU 11B, respectively, provides a work memory space to the first CPU 11A and the second CPU 11B, and stores temporary data for work. For example, the RAM 13 provides a system area and a work area when the first CPU 11A executes the OS, and a storage area when the second CPU 11B executes a specific program.

  The storage unit 14 is a non-volatile memory capable of reading and writing data from the first CPU 11A and the second CPU 11B, and is, for example, a flash memory or an EEPROM (Electrically Erasable and Programmable Read Only Memory). The storage unit 14 stores various data (various setting contents data, etc.) generated by various functions similar to smartphones, wristwatch functions, and the like.

  A removable medium 41 including a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is appropriately mounted on the drive 16. The removable medium 41 can store various data such as data detected by various sensors.

  The touch panel 17 is a capacitance type or resistance film type touch panel provided on the display screen of the second display unit 24. The touch panel 17 detects the user's touch operation position on the operation surface and the operation content, generates a signal corresponding to the operation, and outputs the signal to the first CPU 11A as an input signal.

  The first display unit 18 is composed of an organic EL display (OLED), and displays various information on the display screen under the control of the first CPU 11A.

  The first input unit 19 includes a microphone that converts voice into an electric signal, and outputs a signal indicating the input voice (voice command for operation or the like) to the first CPU 11A.

  The Bluetooth antenna 20 is an antenna that transmits and receives electromagnetic waves based on the Bluetooth standard, and is configured by, for example, a monopole antenna or the like. The Bluetooth antenna 20 transmits an electric signal for wireless communication input from the Bluetooth module 21 as an electromagnetic wave or converts the received electromagnetic wave into an electric signal and outputs the electric signal to the Bluetooth module 21.

  The Bluetooth module 21 transmits a signal to another device via the Bluetooth antenna 20 according to an instruction from the first CPU 11A. The Bluetooth module 21 also receives a signal transmitted from another device and outputs information indicated by the received signal to the first CPU 11A. The wireless LAN antenna 22 is an antenna capable of receiving a radio wave of a frequency corresponding to wireless communication used by the wireless LAN module 23, and is configured by, for example, a loop antenna or a rod antenna. The wireless LAN antenna 22 transmits an electric signal for wireless communication input from the wireless LAN module 23 as an electromagnetic wave or converts the received electromagnetic wave into an electric signal and outputs the electric signal to the wireless LAN module 23.

  The wireless LAN module 23 transmits a signal to another device via the wireless LAN antenna 22 according to an instruction from the first CPU 11A. The wireless LAN module 23 also receives a signal transmitted from another device and outputs information indicated by the received signal to the first CPU 11A.

  The second display unit 24 is composed of a PN (Polymer Network) liquid crystal display that can partially or wholly transmit light, and displays various information on the display screen (segment display here) under the control of the second CPU 11B. .

  In this embodiment, the PN liquid crystal display that is the second display unit 24 is stacked on the display screen of the organic EL display that is the first display unit 18 described above, for example. In this PN liquid crystal display, liquid crystal molecules are irregularly arranged in a portion where no electric potential is applied, and light is reflected. In other words, the PN liquid crystal display is used for display in a portion where this potential is not applied. On the other hand, at the portion to which the electric potential is applied, the liquid crystal molecules are aligned vertically with respect to the display screen, so that light can be transmitted. That is, since the light from the above-mentioned organic EL display can be transmitted through the portion to which this potential is applied, the display by the organic EL display can be visually recognized through the PN liquid crystal display. That is, in the display area of the electronic device 1, the display by the first display unit 18 and the display by the second display unit 24 can be displayed in a superimposed state.

  The pulse sensor 25 is installed on the back side of the electronic device 1 (the side facing the user's arm) and detects the pulse of the user wearing the electronic device 1. For example, the pulse sensor 25 includes a light emitting element (for example, LED (Light-Emitting Diode)) and a light receiving element (for example, Photodiode), and the light emitted from the light emitting element is reflected inside through the user's skin. The reflected light may be detected by the light receiving element, and the pulse may be detected based on the detection result. For example, since the change in the amount of received light occurs according to the change in the volume of the blood vessel, pulse wave information can be obtained.

  The geomagnetic sensor 26 detects the direction of the geomagnetism and outputs information indicating the detected direction of the geomagnetism to the second CPU 11B.

  The acceleration sensor 27 detects acceleration in the three-axis directions in the electronic device 1 and outputs information indicating the detected acceleration to the second CPU 11B.

  The gyro sensor 28 detects the angular velocities of the electronic device 1 in the three-axis directions and outputs information indicating the detected angular velocities to the second CPU 11B.

  The illuminance sensor 29 is installed at a predetermined position on the back surface side of the first display unit 18, detects the brightness (illuminance) in the display area of the electronic device 1, and outputs information indicating the detected brightness to the second CPU 11B.

  The second input unit 30 is composed of various buttons and inputs various information in accordance with a user's instruction operation.

  The GPS antenna 31 receives a radio wave transmitted from a satellite in GPS, converts it into an electric signal, and outputs the converted electric signal (hereinafter referred to as “GPS signal”) to the GPS module 32.

  The GPS module 32 detects the position (latitude, longitude, altitude) of the electronic device 1 and the current time indicated by GPS, based on the GPS signal input from the GPS antenna 31. The GPS module 32 also outputs information indicating the detected position and the current time to the second CPU 11B.

  The temperature sensor 34 is provided inside the electronic device 1. The temperature sensor 34 may be, for example, a thermistor or the like. The temperature sensor 34 detects a temperature that correlates with the temperature of the mounting surface of the electronic device 1 for the user (for example, the back cover of the electronic device 1). For example, the temperature sensor 34 may detect the temperature of an element or module, such as the CPU 11, the wireless LAN module 23, and a power supply (not shown), which generates a relatively large amount of heat during operation. The temperature sensor 34 outputs information indicating the detected temperature to the second CPU 11B.

  Next, the functional configuration of the electronic device 1 will be described. FIG. 3 is a functional block diagram showing a functional configuration for executing the low temperature burn prevention control process.

  The low-temperature burn prevention control process is a process for suppressing a low-temperature burn of the user who wears the electronic device 1, and in the present embodiment, as described below, according to the mounting state of the electronic device 1 by the user, It is executed in a mode that improves convenience. Note that the low-temperature burn of the user occurs due to the relatively high temperature (for example, 45 degrees) of the portion of the electronic device 1 that comes into contact with the bare skin of the user.

  When the low-temperature burn prevention control process is executed, as shown in FIG. 3, in the second CPU 11B, a mounting state detection unit 52 (an example of a detection unit), an internal temperature acquisition unit 54 (an example of an acquisition unit), and a threshold setting. The unit 56 (an example of a setting unit) and the operation state control unit 58 (an example of a control unit) function, and the storage unit 14 realizes the threshold value storage unit 60. The threshold storage unit 60 may be implemented in the ROM 12.

  The mounting state detection unit 52 detects a state in which the electronic device 1 is mounted on the user (hereinafter, also simply referred to as “a mounting state by the user”). The wearing state by the user may be detected by any method. For example, the wearing state detection unit 52 detects the wearing state by the user based on the information from the pulse sensor 25. Specifically, when the pulse sensor 25 detects a state in which a pulse is detected, the wearing state detection unit 52 detects the wearing state of the user. This is because the pulse rate can be basically measured (detected) only when the user wears it. In this case, the existing sensor can be used to accurately detect the mounting state of the user. In addition, in the modification, instead of or in addition to the pulse sensor 25, information of another sensor may be used. For example, when a pressure-sensitive sensor or a capacitance sensor is provided on the back side of the electronic device 1 (the side facing the user's arm), the information from the pressure-sensitive sensor or the capacitance sensor is used to attach by the user. The state can be detected. Alternatively, in the case of the timepiece-type electronic device 1, when a sensor for detecting the open / closed state of the band is provided, the wearing state by the user can be detected by using the information from the sensor.

  The wearing state detection unit 52 detects the wearing state (or non-wearing state) by the user every predetermined period ΔT by operating the pulse sensor 25 at every predetermined period ΔT. The predetermined period ΔT may be constant, but is preferably variable. For example, the predetermined cycle ΔT may be changed based on the information from the temperature sensor 34. In this case, the predetermined cycle ΔT may be varied in such a manner that it becomes shorter as the temperature indicated by the information from the temperature sensor 34 becomes higher. The higher the temperature indicated by the information from the temperature sensor 34, the easier the user's low-temperature burn occurs, and therefore the change between the wearing state and the non-wearing state by the user (particularly, the change from the non-wearing state to the wearable state) This is because it will be useful to detect as soon as possible. Specifically, the predetermined cycle ΔT is set to the first measurement interval ΔT1 (an example of the first detection interval) when the temperature indicated by the information from the temperature sensor 34 is the first temperature, and the same temperature is the first temperature. When the second temperature is higher than the above, the second measurement interval ΔT2 (<first measurement interval ΔT1) (an example of the second detection interval) may be set. In this case, the predetermined cycle ΔT may be changed in two or more steps.

  The internal temperature acquisition unit 54 acquires temperature information indicating the internal temperature of the electronic device 1. The internal temperature acquisition unit 54 may use (acquire) the temperature information from the temperature sensor 34 as the temperature information representing the internal temperature of the electronic device 1, or may convert the temperature information from the temperature sensor 34 into conversion information. The processed temperature information may be derived.

  The threshold value setting unit 56 sets a threshold value for the internal temperature represented by the temperature information acquired by the internal temperature acquisition unit 54, based on the detection result of the mounting state detection unit 52 (information indicating the mounted state or the non-mounted state by the user). To do. In the present embodiment, as an example, the threshold value setting unit 56 sets one of the two threshold values Th1 and Th2 (one example of the first threshold value and the second threshold value, respectively) based on the detection result by the wearing state detection unit 52. Set selectively. Specifically, the threshold value setting unit 56 sets the threshold value Th2 in the wearing state by the user, and sets the threshold value Th1 in the non-wearing state by the user.

  The threshold Th1 is a value higher than the threshold Th2. The threshold value Th2 is the lower limit value of the temperature range (a range in which the internal temperature represented by the temperature information acquired by the internal temperature acquisition unit 54 can be taken) when a low temperature burn occurs while the electronic device 1 is worn by the user. It may be applicable and adapted by tests and the like. The threshold value Th1 is a lower limit value of a range in which the internal temperature represented by the temperature information acquired by the internal temperature acquisition unit 54 can be lowered to the threshold value Th2 or less in a short time. For example, the threshold Th1 may be a temperature between 50 ° C. and 60 ° C., and the threshold Th2 may be about 45 ° C. The threshold Th1 and the threshold Th2 are stored in the threshold storage unit 60.

  The operating state control unit 58 sets the internal temperature represented by the temperature information acquired by the internal temperature acquisition unit 54 (hereinafter, simply referred to as “measured value of internal temperature”) and the threshold value set by the threshold value setting unit 56 (Th1 or Th2), and controls the operating state of the electronic device 1. Specifically, when the operating state of the electronic device 1 is the operating state, the operating state control unit 58 determines that the measured value of the internal temperature exceeds the threshold value (Th1 or Th2) set by the threshold setting unit 56. First, the operating state of the electronic device 1 is changed from the operating state (an example of the first state) to the non-operating state (an example of the second state). Here, the operating state is a normal operating state (that is, a state in which there is no limitation on power consumption, etc.), and the non-operating state is a state that is not the operating state. In the non-operating state, power consumption is lower than that in the operating state (thus, the heat generation amount is smaller). The non-operating state is preferably a state in which the measured value of the internal temperature decreases over time. This can prevent the measured value of the internal temperature from further increasing after exceeding the threshold value (Th1 or Th2). As a result, the possibility of low temperature burns for the user can be reduced.

  In the present embodiment, as an example, the non-operation state may be realized by, for example, stopping the power supply to the wireless LAN module 23 and shutting down the first CPU 11A. In the modification, the power supply to the wireless LAN module 23 may be maintained, or the power supply to the wireless LAN module 23 and other modules such as the Bluetooth module 21 may be stopped. .

  According to the present embodiment, as described above, when the measured value of the internal temperature exceeds the comparatively low threshold value Th2 in the wearing state by the user, the operating state of the electronic device 1 shifts from the operating state to the non-operating state. On the other hand, when the measured value of the internal temperature exceeds the relatively high threshold value Th1 in the non-wearing state by the user, the operating state of the electronic device 1 is shifted from the operating state to the non-operating state.

  As a result, the low-temperature burn prevention control can properly function in a mode that does not impair the convenience of the user. That is, when the measured value of the internal temperature exceeds the threshold Th2 in the wearing state by the user, the user is likely to get a low temperature burn, and therefore the operating state of the electronic device 1 is shifted from the operating state to the non-operating state. . This can reduce the possibility that the user will get a low temperature burn. On the other hand, in the non-wearing state by the user, even if the measured value of the internal temperature exceeds the threshold Th2, the user is less likely to suffer low-temperature burns, so that the operating state of the electronic device 1 is maintained in the operating state. That is, even if the measured value of the internal temperature exceeds the threshold Th2, the operating state of the electronic device 1 is maintained in the operating state until the measured value of the internal temperature exceeds the threshold Th1. This improves the convenience for the user who may use the electronic device 1 without wearing the electronic device 1.

  For example, as described above, there is a case where the user uses the electronic device 1 outdoors without wearing the electronic device 1 on his / her hand, such as a case where the user attaches it to the handle portion of the bicycle during cycling. In such a case, the electronic device 1 is likely to be exposed to direct sunlight and the temperature thereof is likely to rise. In such a situation, for example, when the threshold value is always the threshold value Th2, the electronic device 1 becomes inactive when the measured value of the internal temperature exceeds the threshold value Th2, which is inconvenient for the user.

  In this regard, according to the present embodiment, as described above, even if the measured value of the internal temperature exceeds the threshold value Th2, the operating state of the electronic device 1 remains in the operating state until the measured value of the internal temperature exceeds the threshold value Th1. Since it is maintained, the convenience of the user is improved when the electronic device 1 is used outdoors without being attached to the hand.

  Further, according to the present embodiment, even when the user is not wearing the electronic device 1, the operating state of the electronic device 1 shifts from the operating state to the non-operating state when the measured value of the internal temperature exceeds the threshold Th1. To be done. This can reduce the possibility of low-temperature burns even if the user subsequently decides to wear the electronic device 1 on his / her hand. That is, the user does not know at what timing the electronic device 1 should be worn on the hand, so that the internal temperature should be measured within a temperature range that will not cause a low-temperature burn even if the user wears the electronic device 1 on the hand. By maintaining the value, the possibility of low-temperature burn can be reduced even if the electronic device 1 is to be attached to the hand thereafter.

  Next, an operation example of the electronic device 1 will be described with reference to FIG.

  FIG. 4 is a schematic flowchart showing an example of processing executed by the second CPU 11B of the electronic device 1 in association with the low temperature burn prevention control processing.

  In step S400, the second CPU 11B acquires temperature information from the temperature sensor 34.

  In step S402, the second CPU 11B determines whether or not the temperature (for example, the measured value of the internal temperature) based on the temperature information from the temperature sensor 34 exceeds the first temperature limit value α1. If the determination result is “YES”, the process proceeds to step S404, otherwise, the process ends.

  In step S404, the second CPU 11B acquires the state of the pulse sensor 25 (ON / OFF state) and pulse information (in the ON state).

  In step S406, the second CPU 11B determines whether pulse measurement by the pulse sensor 25 is being performed. The pulse measurement by the pulse sensor 25 is a state in which the pulse measurement application is operating. However, in the modified example, “during pulse measurement by the pulse sensor 25” may be a state in which the pulse sensor 25 can detect a pulse (the ON state of the pulse sensor 25). If the determination result is “YES”, the process proceeds to step S408, and otherwise, the process proceeds to step S416.

  In step S408, the second CPU 11B determines whether the measurement interval (predetermined period ΔT) of the pulse sensor 25 is the first measurement interval ΔT1. If the determination result is “YES”, the process proceeds to step S410, and if not, the process proceeds to step S412.

  In step S410, the second CPU 11B sets the measurement interval (predetermined cycle ΔT) of the pulse sensor 25 to the second measurement interval ΔT2. The second measurement interval ΔT2 is shorter than the first measurement interval ΔT1.

  In step S412, the second CPU 11B determines whether or not the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) exceeds the second temperature limit value α2. The second temperature limit value α2 is higher than the first temperature limit value α1 and corresponds to the above-mentioned threshold Th2. If the determination result is "YES", the process proceeds to step S420, and if not, the process ends.

  In step S416, the second CPU 11B determines whether the temperature based on the temperature information from the temperature sensor 34 has exceeded the second temperature limit value α2. If the determination result is "YES", the process proceeds to step S418, and otherwise, the process proceeds to step S426.

  In step S418, the second CPU 11B determines whether the temperature based on the temperature information from the temperature sensor 34 has exceeded the third temperature limit value α3. The third temperature limit value α3 is higher than the second temperature limit value α2 and corresponds to the threshold value Th1 described above. If the determination result is “YES”, the process proceeds to step S420, and otherwise, the process proceeds to step S428.

  In step S420, the second CPU 11B sends a high temperature notification to the first CPU 11A. The high temperature notification functions as a notification for shifting the operating state of the electronic device 1 from the operating state to the non-operating state. Here, as an example, the non-operating state of the electronic device 1 is realized by shutting down the first CPU 11A.

  In step S422, the second CPU 11B determines whether the first CPU 11A has shut down. If the determination result is “YES”, the process proceeds to step S424, and if not, the standby state stands by for the first CPU 11A to shut down.

  In step S424, the second CPU 11B outputs information indicating a temperature error to the second display unit 24. This allows the user to easily understand the reason why the first CPU 11A shuts down.

  In step S426, the second CPU 11B sets the measurement interval (predetermined period ΔT) of the pulse sensor 25 to the second measurement interval ΔT2.

  In step S428, the second CPU 11B sets the measurement interval (predetermined period ΔT) of the pulse sensor 25 to the first measurement interval ΔT1.

  According to the process shown in FIG. 4, when the pulse sensor 25 is measuring the pulse, the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) exceeds the second temperature limit value α2. In the case where the pulse sensor 25 is not measuring the pulse, the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) is generated. However, when the third temperature limit value α3, which is higher than the second temperature limit value α2, is exceeded, a high temperature notification for shutting down the first CPU 11A is generated. As a result, the convenience of the user is improved when the electronic device 1 is used outdoors without wearing it while preventing low-temperature burns.

  Further, according to the processing shown in FIG. 4, when the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) exceeds the first temperature limit value α1, the pulse sensor 25 is measuring the pulse. In some cases, the measurement interval (predetermined period ΔT) of the pulse sensor 25 is set to the second measurement interval ΔT2, so that a low-temperature burn may occur (that is, the temperature based on the temperature information from the temperature sensor 34 is the second value). A state in which the temperature limit value α2 is exceeded) can be promptly detected.

  Further, according to the processing shown in FIG. 4, even when the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) exceeds the first temperature limit value α1, the pulse sensor 25 detects When the pulse is not being measured, the measurement interval (predetermined period ΔT) of the pulse sensor 25 is set to the first measurement interval ΔT1 as long as the temperature based on the temperature information from the temperature sensor 34 does not exceed the second temperature limit value α2. It This is because the electronic device 1 is unlikely to be worn on the hand when the pulse is not being measured by the pulse sensor 25, and therefore the user is less likely to suffer low temperature burns. As a result, the measurement interval of the pulse sensor 25 can be made relatively long to save power.

  FIG. 5 is a schematic flowchart showing an example of processing executed by the first CPU 11A of the electronic device 1 in relation to FIG.

  In step S500, the first CPU 11A determines whether or not the high temperature notification (see step S420 in FIG. 4) has been received. If the determination result is “YES”, the process proceeds to step S502, and if not, the standby state stands by for the first CPU 11A to receive the high temperature notification.

  In step S502, the first CPU 11A shuts down the wireless LAN module 23 and the like.

  In step S504, the first CPU 11A shuts itself down.

  According to the processing shown in FIG. 5, when the high temperature notification is transmitted from the second CPU 11B (see step S420 in FIG. 4), the wireless LAN module 23 and the first CPU 11A are shut down and the non-operation state is formed. As a result, a further rise in temperature of the electronic device 1 is suppressed (because a decrease in temperature can be expected), so the possibility of low temperature burns can be effectively reduced.

Here, the processing shown in FIGS. 4 and 5 is merely an example, and various changes can be made. For example, when the determination result of step S406 is other than “YES”, the process ends as it is, and when the determination result of step S406 is “YES”, the threshold value Th2 is set, and the temperature based on the temperature information from the temperature sensor 34 (for example, internal It may be determined whether or not the measured temperature value) exceeds the second temperature limit value α2 (step S412). In this case, when the pulse sensor 25 is not measuring the pulse, the high temperature notification is not generated, and therefore, the wireless LAN module 23 and the first CPU 11A are not shut down based on the high temperature notification.
Also, when the determination result of step S408 is "YES", the threshold value Th2 is set, and the temperature based on the temperature information from the temperature sensor 34 (for example, the measured value of the internal temperature) exceeds the second temperature limit value α2. It may be determined whether or not.

  Although the respective embodiments have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the claims. Further, it is possible to combine all or a plurality of the constituent elements of the above-described embodiments.

Hereinafter, the inventions described in the claims attached to the application of this application will be additionally described. The claim numbers listed in the appendices are as set forth in the claims initially attached to the application for this application.
<Claim 1>
In wearable electronic devices that can be worn by users,
Detection means for detecting the wearing state by the user,
Acquisition means for acquiring temperature information representing the temperature of the electronic device,
Based on the detection result by the detection means, setting means for setting a threshold value for the temperature represented by the temperature information acquired by the acquisition means,
Based on the temperature represented by the temperature information acquired by the acquisition unit, and the threshold value set by the setting unit, a control unit for controlling the operating state of the electronic device,
An electronic device comprising:
<Claim 2>
The electronic device is capable of transitioning its operating state between a plurality of states including a first state and a second state in which a heat generation amount is smaller than that of the first state,
When the operating state of the electronic device is in the first state and the temperature represented by the temperature information acquired by the acquiring unit exceeds the threshold value set by the setting unit, the control unit sets the electronic device The electronic device according to claim 1, wherein an operation state of the device is changed to the second state.
<Claim 3>
The setting unit selectively sets any one of a first threshold value and a second threshold value as the threshold value based on a detection result by the detection unit. Electronics.
<Claim 4>
The setting means sets the first threshold value when the wearing state by the user is not detected by the detecting means,
The electronic device according to claim 3, wherein the first threshold value is a value higher than the second threshold value.
<Claim 5>
The electronic device according to claim 3 or 4, wherein the setting unit sets the second threshold value when the wearing state by the user is detected by the detecting unit.
<Claim 6>
When the mounting state by the user is detected by the detection unit, the control unit is based on the temperature represented by the temperature information acquired by the acquisition unit and the threshold value set by the setting unit. The electronic device according to claim 1 or 2, wherein the operating state of the electronic device is controlled.
<Claim 7>
7. The detecting unit changes a detection interval for detecting a wearing state by a user according to the temperature represented by the temperature information acquired by the acquiring unit. Electronic device described in.
<Claim 8>
When the temperature represented by the temperature information acquired by the acquisition unit is the first temperature, the detection unit detects the wearing state by the user at the first detection interval, and the temperature information acquired by the acquisition unit. The wearing state by the user is detected at a second detection interval shorter than the first detection interval when the temperature represented by is a second temperature higher than the first temperature. Electronics.
<Claim 9>
Detects the wearable state of the wearable electronic device by the user,
Obtain temperature information that represents the temperature of the electronic device,
Based on the detection result by the mounting state, set a threshold for the temperature represented by the temperature information,
A control method executed by a computer, comprising controlling an operating state of the electronic device based on the temperature represented by the temperature information and the threshold value.
<Claim 10>
Detects the wearable state of the wearable electronic device by the user,
Obtain temperature information that represents the temperature of the electronic device,
Based on the detection result by the mounting state, set a threshold for the temperature represented by the temperature information,
A control program that causes a computer to execute a process of controlling an operation state of the electronic device based on the temperature represented by the temperature information and the threshold value.

1 Electronic Device 2 Headset 3 Mobile Terminal 11A First CPU
11B Second CPU
14 storage unit 15 RTC unit 16 drive 17 touch panel 18 first display unit 19 first input unit 20 Bluetooth antenna 21 Bluetooth module 22 wireless LAN antenna 23 wireless LAN module 24 second display unit 25 pulse sensor 26 geomagnetic sensor 27 acceleration sensor 28 Gyro sensor 29 Illuminance sensor 30 Second input unit 31 GPS antenna 32 GPS module 34 Temperature sensor 41 Removable medium 52 Mounting state detection unit 54 Internal temperature acquisition unit 56 Threshold setting unit 58 Operation state control unit 60 Threshold storage unit

Claims (10)

In wearable electronic devices that can be worn by users,
Detection means for detecting the wearing state by the user,
Acquisition means for acquiring temperature information representing the temperature of the electronic device,
Based on the detection result by the detection means, setting means for setting a threshold value for the temperature represented by the temperature information acquired by the acquisition means,
Based on the temperature represented by the temperature information acquired by the acquisition unit, and the threshold value set by the setting unit, a control unit for controlling the operating state of the electronic device,
An electronic device comprising: The electronic device is capable of transitioning its operating state between a plurality of states including a first state and a second state in which a heat generation amount is smaller than that of the first state,
When the operating state of the electronic device is in the first state and the temperature represented by the temperature information acquired by the acquiring unit exceeds the threshold value set by the setting unit, the control unit sets the electronic device The electronic device according to claim 1, wherein an operation state of the device is changed to the second state.   The setting unit selectively sets any one of a first threshold value and a second threshold value as the threshold value based on a detection result by the detection unit. Electronics. The setting means sets the first threshold value when the wearing state by the user is not detected by the detecting means,
The electronic device according to claim 3, wherein the first threshold value is a value higher than the second threshold value.   The electronic device according to claim 3 or 4, wherein the setting unit sets the second threshold value when the wearing state by the user is detected by the detecting unit.   When the mounting state by the user is detected by the detection unit, the control unit is based on the temperature represented by the temperature information acquired by the acquisition unit and the threshold value set by the setting unit. The electronic device according to claim 1 or 2, wherein the operating state of the electronic device is controlled.   7. The detecting unit changes a detection interval for detecting a wearing state by a user according to the temperature represented by the temperature information acquired by the acquiring unit. Electronic device described in.   When the temperature represented by the temperature information acquired by the acquisition unit is the first temperature, the detection unit detects the wearing state by the user at the first detection interval, and the temperature information acquired by the acquisition unit. The wearing state by the user is detected at a second detection interval shorter than the first detection interval when the temperature represented by is a second temperature higher than the first temperature. Electronics. Detects the wearable state of the wearable electronic device by the user,
Obtain temperature information that represents the temperature of the electronic device,
Based on the detection result by the mounting state, set a threshold for the temperature represented by the temperature information,
A control method executed by a computer, comprising controlling an operating state of the electronic device based on the temperature represented by the temperature information and the threshold value. Detects the wearable state of the wearable electronic device by the user,
Obtain temperature information that represents the temperature of the electronic device,
Based on the detection result by the mounting state, set a threshold for the temperature represented by the temperature information,
A control program that causes a computer to execute a process of controlling an operation state of the electronic device based on the temperature represented by the temperature information and the threshold value.

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