Measurement systems, measuring instruments, ring instruments, and programs

Abstract

To provide a measurement system that can suppress the output of inaccurate biological information. [Solution] The measurement system includes a ring device equipped with an acceleration sensor that outputs acceleration data, an electronic clock equipped with a pulse sensor that outputs pulse data, and at least one processor, wherein the processor controls processing based on pulse data output by the pulse sensor of the electronic clock based on acceleration data output by the acceleration sensor of the ring device, interrupts processing by the electronic clock based on acceleration data output by the acceleration sensor of the ring device, or notifies information regarding the measurement of the electronic clock based on acceleration data output by the acceleration sensor of the ring device.

Description

Technical Field

[0001] The present invention relates to a measurement system, a measuring device, a ring device, and a program.

Background Art

[0002] Some wristwatch-type wearable devices worn on the wrist or the like have a function of measuring biological information such as a pulse in addition to the function as a watch (see Patent Document 1). The wearable device is equipped with an acceleration sensor, and removes noise due to body movement such as walking by removing body movement corresponding to the movement of the wrist or the like detected by the acceleration sensor from the measurement value measured by the optical pulse sensor.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technique described in Patent Document 1, although a large periodic movement of the arm such as running can be detected by the acceleration sensor, the movement of the finger during the input operation of the keyboard cannot be detected with high accuracy. Therefore, not all body movement noise can be removed from the measurement value measured by the optical pulse sensor, and there is a problem that the accuracy of the output biological information is reduced.

[0005] Therefore, an object of the present invention is to provide a measurement system, a measuring device, a ring device, and a program that can suppress the output of low-accuracy biological information in order to solve the above problems.

Means for Solving the Problems

[0006] A measurement system according to one aspect of the present invention includes a ring device equipped with a first sensor that outputs a first measurement value, a measuring device equipped with a second sensor that outputs a second measurement value, and at least one processor, wherein the processor controls processing based on the second measurement value output by the second sensor of the measuring device based on the first measurement value output by the first sensor of the ring device, interrupts processing by the measuring device based on the first measurement value output by the first sensor of the ring device, or notifies information regarding the measurement of the measuring device based on the first measurement value output by the first sensor of the ring device. [Effects of the Invention]

[0007] According to the present invention, it is possible to suppress the output of low-accuracy biological information. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example of the configuration of the measurement system according to the first embodiment. [Figure 2] This is a block diagram of the ring device according to the first embodiment. [Figure 3] This is a block diagram of an electronic clock according to the first embodiment. [Figure 4] This flowchart shows an example of the operation of an electronic clock when measuring pulse rate according to the first embodiment. [Figure 5] This flowchart shows an example of the operation of an electronic clock when measuring the oxygen saturation concentration of a user according to the second embodiment. [Modes for carrying out the invention]

[0009] A measurement system and the like according to a preferred embodiment of this disclosure will be described in detail below with reference to the attached drawings.

[0010] <First Embodiment> First, the schematic configuration of the measurement system 1 according to the first embodiment will be described. As shown in Figure 1, the measurement system 1 comprises a ring device 10, which corresponds to an example of a ring device, and an electronic clock 20, which corresponds to an example of a measuring instrument. The ring device 10 and the electronic clock 20 are connected to each other by short-range wireless communication such as wireless LAN including Bluetooth® and Wi-Fi®.

[0011] The ring device 10 is a ring-shaped wearable terminal called a smart ring, which is worn on the user's finger. It is preferable to wear the ring device 10 on one finger that is expected to move relatively frequently, such as the index finger. The ring device 10 can measure the user's pulse (heart rate), heart rate variability (HRV), SpO2 (blood oxygen saturation), body surface temperature, respiratory rate, and other biometric information. In this embodiment, the ring device 10 is used to obtain biometric information with higher accuracy when measuring pulse and other biometric information. That is, when operating a personal computer keyboard, the wrist may remain still, and only the fingers may move. When moving the fingers, the muscles from the elbow to the fingertips, called the deep flexor digitorum and superficial flexor digitorum, contract and expand, and the contraction and expansion of these muscles affect the blood vessels in the fingers. Therefore, when measuring biometric information such as pulse when operating a keyboard, the periodic movement of the fingers affects the pulse rate. The acceleration corresponding to the movement of only the fingers cannot be detected by conventional electronic watches 20 worn on the wrist. Therefore, in this embodiment, acceleration is further detected by the ring device 10 worn on the finger, thereby eliminating body movement noise corresponding only to finger movement when measuring biological information such as pulse rate.

[0012] The electronic watch 20 is a smartwatch-type wearable device, which is worn, for example, on the user's wrist (arm). In this embodiment, the electronic watch 20 is worn on the wrist on the same side as the finger to which the ring device 10 is attached, in order to accurately measure biometric information such as pulse rate. In addition to the functions of a clock, the electronic watch 20 can measure biometric information such as the user's heart rate, heart rate variability, SpO2, body surface temperature, respiratory rate, and the user's location information.

[0013] In this embodiment, heart rate refers to the pulsations of the heart as it pumps blood, while pulse rate refers to the pulsations that indicate changes in arterial pressure caused by the heartbeat. Heart rate is the number of beats per minute, and pulse rate, which is similarly the number of pulses per minute, is approximately the same value. Therefore, in sections where the biological information measured by the ring device 10 and the electronic clock 20 is described as pulse rate, the same effect can be obtained by substituting pulse rate with heart rate.

[0014] Next, an example of the block configuration of the ring device 10 according to this embodiment will be described. As shown in Figure 2, the ring device 10 includes a microcontroller 11, an operation reception unit 12, a communication unit 13, a power supply unit 14, and an acceleration sensor 15 which corresponds to an example of a first sensor. The microcontroller 11 and the operation reception unit 12, and other components are connected by wiring such as a bus (not shown).

[0015] The microcontroller 11 is a computer for controlling each part of the ring device 10. The microcontroller 11 has a CPU (Central Processing Unit) 11a as a processor, a ROM (Read Only Memory) 11b, and a RAM (Random Access Memory) 11c. The CPU 11a reads a specified program P1 from the system programs and various programs stored in the ROM 11b, loads it into the RAM 11c, and, in cooperation with the loaded program P1, executes algorithms for measuring biological information, acquiring and transmitting acceleration data, etc. Specifically, the CPU 11a functions as a control unit that controls processing based on pulse data (second measurement value) output by the pulse sensor 26 by the electronic clock 20, and outputs acceleration data (first measurement value) output by the acceleration sensor 15 to the electronic clock 20 as information for interrupting processing by the electronic clock 20 or notifying information related to measurements by the electronic clock 20.

[0016] The operation reception unit 12 has, for example, touch-operable buttons provided on the circumferential surface of an annular ring body. The operation reception unit 12 receives instructions corresponding to operations such as pairing with the electronic clock 20 by the user, starting and stopping the measurement of various biometric information, etc., and outputs an operation signal corresponding to the received instruction to the CPU 11a of the microcomputer 11. Note that an application for the ring device 10 may be installed on an information terminal such as a smartphone, and the ring device 10 may be remotely operated from the information terminal by touching a GUI (Graphical User Interface) or the like displayed on the screen of the display unit of the information terminal.

[0017] The communication unit 13 wirelessly communicates biometric information such as heart rate and various signals with the electronic clock 20 via a communication network such as Bluetooth (registered trademark), Wi-Fi (registered trademark) or the Internet.

[0018] The power supply unit 14 includes, for example, a secondary battery such as a lithium ion battery. The power supply unit 14 supplies power to each part of the ring device 10 at a preset voltage. The power supply unit 14 can be charged by external power supply. The power supply unit 14 may be charged, for example, by connecting to a commercial power supply using various terminals of USB (Universal Serial Bus), a non-contact wireless device, or by directly connecting to a commercial power supply. Further, the power supply unit 14 may be solar charging using a solar panel.

[0019] The acceleration sensor 15 measures acceleration, which is the rate of change of the operating speed such as the movement of the user's finger, and outputs acceleration value data, which is the measurement result, to the CPU 11a of the microcomputer 11. The acceleration may be measured, for example, in a total of three axial directions including two axial directions orthogonal in the display plane and one axial direction perpendicular to the display plane.

[0020] Next, an example of the block configuration of the electronic clock 20 according to the present embodiment will be described. As shown in FIG. 3, the electronic clock 20 includes a microcomputer 21, an operation reception unit 22, a display unit 23, a communication unit 24, a power supply unit 25, a pulse sensor 26 corresponding to an example of a second sensor and a biological sensor, and an acceleration sensor 27.

[0021] The microcomputer 21 is a computer for controlling each part of the electronic clock 20. The microcomputer 21 has a CPU 21a as a processor, a ROM 21b, and a RAM 21c. The CPU 21a reads out a program P2 specified from the system program and various programs stored in the ROM 21b and expands it in the RAM 22c, and by cooperating with the expanded program P2, measures biological information and executes an algorithm such as control for removing body movements such as finger movements from pulse data. Specifically, the CPU 21a controls the processing based on the acceleration data output by the acceleration sensor 15 of the ring device 10 based on the pulse data output by the pulse sensor 26 of the electronic clock 20, interrupts the processing by the electronic clock 20 based on the acceleration data output by the acceleration sensor 15 of the ring device 10, or functions as a control unit that notifies information regarding the measurement by the electronic clock 20 based on the acceleration data output by the acceleration sensor 15 of the ring device 10.

[0022] The operation reception unit 22 has a plurality of buttons, switches, etc. provided on the peripheral portion of the case. The operation reception unit 22 receives, for example, an instruction corresponding to an operation for starting or stopping the measurement of various biological information in addition to an operation for performing various settings of the clock, and outputs an operation signal corresponding to the received instruction to the CPU 21a of the microcomputer 21. The operation reception unit 22 may include a touch panel integrally combined with the display unit 23.

[0023] The display unit 23 has a display device such as a liquid crystal display or an organic EL (Electro Luminescence). The display unit 23 has, for example, a screen capable of digital display, and displays the hour, minute, and second of the time, as well as biological information such as the measured pulse rate, SpO2, body surface temperature, and respiratory rate.

[0024] The communication unit 24 wirelessly transmits biometric information such as heart rate, various signals, etc., to the ring device 10 via a communication network such as Bluetooth®, Wi-Fi®, or the Internet.

[0025] The power supply unit 25 includes, for example, a secondary battery such as a lithium-ion battery. The power supply unit 25 supplies power to each part of the electronic clock 20 at a preset voltage. The power supply unit 25 can be charged by an external power supply. The power supply unit 25 may be charged by solar charging using a solar panel, by connecting to a commercial power source using various USB terminals, or by connecting directly to a commercial power source.

[0026] The pulse sensor 26 is, for example, a PPG sensor that measures the user's pulse. The pulse sensor 26 measures the user's heart rate by utilizing the property that hemoglobin in arterial blood absorbs light. Specifically, the pulse sensor 26 shines light onto the user's wrist and obtains heart rate data by measuring the change in blood flow in the body from the light reflected inside the wrist, and outputs it to the CPU 21a of the microcontroller 21.

[0027] The acceleration sensor 27 measures acceleration, which is the rate of change in the speed of movement such as the user's arm movement, and outputs the measured value to the CPU 21a of the microcontroller 21. The acceleration may be measured in a total of three axes: two axes orthogonal within the display surface and one axis perpendicular to the display surface.

[0028] Next, Figure 4 is a flowchart showing an example of the operation of the electronic clock 20 when measuring pulse rate according to the first embodiment. The CPU 21a of the electronic clock 20 executes the program P2 stored in the ROM 21b to realize each step shown in Figure 4. In this embodiment, it is assumed that the user measures pulse rate using the electronic clock 20 while sitting in a chair and operating the keyboard of a personal computer. Furthermore, it is assumed that pairing between the ring device 10 and the electronic clock 20 has been completed, for example, by BLE (Bluetooth® Low Energy) communication, and that a connection between the ring device 10 and the electronic clock 20 is possible.

[0029] As shown in Figure 4, the CPU 21a of the electronic clock 20 determines whether or not an operation to select the pulse measurement function by the user has been received by the operation reception unit 22 (step S100). If the CPU 21a determines that an operation to select the pulse measurement function by the user has been received by the operation reception unit 22, it proceeds to step S101. On the other hand, if the CPU 21a determines that an operation to select the pulse measurement function by the user has not been received by the operation reception unit 22, it continues to check for various operations by the user.

[0030] The CPU 11a of the ring device 10 constantly detects body movements corresponding to the user's finger movements using the acceleration sensor 15, and transmits this acceleration data to the electronic clock 20 via the communication unit 13. The ring device 10 may also transmit acceleration data to the electronic clock 20 when it receives a request to acquire acceleration data from the electronic clock 20. The CPU 21a of the electronic clock 20 acquires the acceleration data from the ring device 10 received by the communication unit 24 (step S101). The acceleration data includes, for example, body movement information corresponding to the user's finger movements when operating a computer keyboard.

[0031] The CPU 21a determines whether the acquired acceleration data is above a preset threshold (step S102). The threshold is set to a value that can identify whether the user's finger movements are large, sudden, or irregular. In this case, the threshold may be set based, for example, on the peak amplitude value in the waveform of the reference acceleration data.

[0032] In step S101, if the CPU 21a determines that the acceleration data acquired from the ring device 10 is not above a preset threshold, i.e., below the threshold, it proceeds to step S102. In this case, the CPU 21a determines that the user's finger movements are suitable for pulse measurement and continues measuring the pulse. Specifically, this includes cases where the user is sitting in a chair and operating a keyboard by regularly moving only their fingers.

[0033] The CPU 21a measures the user's pulse using the pulse sensor 26 and acquires the pulse data detected by the pulse sensor 26 (step S103). The CPU 21a also measures the acceleration of the electronic clock 20 using the acceleration sensor 27 and acquires the acceleration data detected by the acceleration sensor 27 (step S104).

[0034] The CPU 21a obtains a spectrum (frequency components), which is a frequency function, by performing frequency analysis on the acquired time functions, namely acceleration data and pulse rate data (step S105). Examples of frequency analysis include Fourier transform and wavelet transform. The frequency analysis on the acceleration data measured by the ring device 10 may be performed on the ring device 10 itself. Specifically, the CPU 21a obtains a first spectrum by performing frequency analysis on the acceleration data measured by the ring device 10. The first spectrum contains frequency components that indicate body movement corresponding to the user's finger movements. Among these frequency components, the frequency peak corresponding to finger movement is, for example, 1.8 Hz (10⁸ rpm).

[0035] Furthermore, the CPU 21a obtains a second spectrum by performing frequency analysis on acceleration data measured by the pulse sensor 26 of the electronic clock 20. The second spectrum includes not only the frequency components of the user's heartbeat but also frequency components indicating body movement corresponding to the user's finger movements. Among these frequency components, the frequency peak corresponding to the pulse is, for example, 2 Hz (120 rpm), and the frequency peak corresponding to finger movement is, for example, 1.8 Hz (108 rpm).

[0036] Furthermore, the CPU 21a obtains a third spectrum by performing frequency analysis on the acceleration data measured by the acceleration sensor 27 of the electronic clock 20. The third spectrum contains frequency components that indicate body movement corresponding to the user's arm movements. In this embodiment, as described above, the user is sitting in a chair and operating the keyboard by regularly moving only their fingers, with their arms barely moving. Therefore, the obtained third spectrum does not contain any frequency peaks.

[0037] The CPU 21a extracts the frequency component indicating the pulse rate from the second spectrum by removing the first and third spectra, respectively, from the second spectrum obtained through each frequency analysis (step S106). For example, the CPU 21a removes the first spectrum, which has a frequency peak of 1.8Hz, from the second spectrum, which has frequency peaks of 2Hz and 1.8Hz. In other words, the CPU 21a corrects the process of deriving the pulse rate (biometric information) based on the pulse data from the pulse sensor 26 of the electronic clock 20, based on the acceleration data from the acceleration sensor 15 of the ring device 10. As a result, in the second spectrum, body movements corresponding to the user's finger movements are removed, and only the frequency components related to the pulse remain. Subsequently, the CPU 21a extracts the frequency component with the largest amplitude in the second spectrum as the frequency component of the user's pulse rate, and calculates the pulse rate based on the extracted frequency component.

[0038] The display unit 23 displays the pulse rate calculated from the second spectrum by the CPU 21a on the screen (step S107). In this way, according to this embodiment, an accurate pulse rate, with body movements corresponding to the user's finger movements removed, can be displayed on the screen of the display unit 23.

[0039] On the other hand, in step S102, if the CPU 21a determines that the acceleration data acquired from the ring device 10 is above a preset threshold, the process proceeds to step S108. The CPU 21a determines that the user's finger movements are irregular or otherwise unsuitable for pulse measurement and interrupts pulse measurement (step S108). In other words, the CPU 21a interrupts the measurement process by the pulse sensor 26 of the electronic clock 20 based on the acceleration data from the acceleration sensor 15 of the ring device 10. In this case, the CPU 21a controls the pulse sensor 26 to stop measurement by stopping the emission of light from the light-emitting part constituting the pulse sensor 26. The CPU 21a may also control the acceleration measurement by the acceleration sensor 27 to stop. Furthermore, the CPU 21a may notify the user of warning information indicating that the user's finger movements are unsuitable for pulse measurement. For example, the CPU 21a displays text or other information indicating that the user's finger movements are unsuitable for pulse measurement on the screen of the display unit 23 of the electronic clock 20. After the pulse measurement is interrupted, the CPU 21a may return to step S101 and acquire acceleration data from the ring device 10 again to perform threshold determination.

[0040] In the above-described embodiment, computationally intensive calculations such as acceleration data and pulse rate data were performed by the electronic clock 20, but this is not the only way to go. For example, the calculations of acceleration data and pulse rate data may be performed by an information processing device such as a smartphone owned by the user or a server built on the cloud. In this case, the information processing device performs calculations on the acceleration data and pulse rate data received from the ring device 10 and the electronic clock 20, and transmits the pulse rate data obtained from the calculations to the electronic clock 20. The CPU 21a of the electronic clock 20 displays the pulse rate on the screen of the display unit 23 based on the pulse rate data transmitted from the information processing device. This reduces the load on the electronic clock 20 during calculations and also reduces power consumption.

[0041] According to the first embodiment, the following effects can be achieved. Conventionally, the user's pulse rate is calculated by removing frequency components based on acceleration data measured by an acceleration sensor 27 built into the electronic clock 20 from frequency components of pulse data measured by a pulse sensor 26. However, while the acceleration sensor 27 of the electronic clock 20 can detect periodic arm movements linked to exercise such as running, it may not be able to detect body movements where only the fingers move while the wrist remains almost still, such as when a user is operating a computer keyboard. Muscle movements due to finger movements greatly affect the pulse rate measured by the pulse sensor 26. Therefore, if body movement noise corresponding to finger movements is not removed, the accuracy of biometric information such as pulse rate measured by the electronic clock 20 will decrease. In the first embodiment, a ring device 10 attached to the user's finger is used to detect body movements corresponding to the user's finger movements and transmit the acceleration data to the electronic clock 20. In the electronic clock 20, the frequency components based on the acceleration data received from the ring device 10 are removed from the frequency components based on the pulse data measured by the pulse sensor 26, thereby enabling the acquisition of an accurate pulse rate. As a result, according to the first embodiment, a highly accurate pulse rate can be displayed on the screen of the display unit 23 of the electronic clock 20.

[0042] Furthermore, by incorporating a pulse sensor or the like in addition to the acceleration sensor 15 into the ring device 10, it is conceivable that the ring device 10 alone could measure biological information such as pulse rate. However, when the ring device 10 is configured as a standalone unit, the current consumption is higher compared to operating just one acceleration sensor, as it drives and controls both the acceleration sensor 15 and the pulse sensor, resulting in the disadvantage of not being able to perform continuous measurements for extended periods. In addition, it requires optical structural design, which also results in the disadvantage of increasing the size of the ring device 10. In contrast, according to the first embodiment, the user's biological information is measured using both the ring device 10 with a built-in acceleration sensor 15 and the electronic clock 20 with a built-in pulse sensor 26. This makes it possible to operate the ring device 10 continuously for extended periods and prevents the ring device 10 from becoming larger.

[0043] <Second Embodiment> In the second embodiment, a case in which the user's oxygen saturation concentration is measured using an electronic clock 20 or the like will be described. In the following, the differences from the first embodiment will be explained in detail, and components that are substantially common to both the first embodiment and the second embodiment will be denoted by the same reference numerals, while common descriptions will be omitted or simplified.

[0044] Next is a flowchart illustrating an example of the operation of the electronic clock 20 when measuring the user's oxygen saturation concentration according to the second embodiment. The CPU 21a of the electronic clock 20 executes the program P2 stored in the ROM 21b to realize each step shown in Figure 5. In this embodiment, it is assumed that pairing between the ring device 10 and the electronic clock 20 has been completed, for example, by BLE (Bluetooth® Low Energy) communication, and that a connection between the ring device 10 and the electronic clock 20 is possible.

[0045] As shown in Figure 5, the CPU 21a of the electronic clock 20 determines whether or not the operation to select the oxygen saturation measurement function by the user has been received by the operation reception unit 22 (step S200). If the CPU 21a determines that the operation to select the oxygen saturation measurement function by the user has been received by the operation reception unit 22, it proceeds to step S201. On the other hand, if the CPU 21a determines that the operation to select the oxygen saturation measurement function by the user has not been received by the operation reception unit 22, it continues to check for user operations.

[0046] The CPU 11a of the ring device 10 constantly detects body movements corresponding to the user's finger movements using the acceleration sensor 15, and transmits the acceleration data to the electronic clock 20 via the communication unit 13. The ring device 10 may also transmit acceleration data to the electronic clock 20 when it receives a request to acquire acceleration data from the electronic clock 20. When the oxygen saturation concentration measurement function is selected, the CPU 21a of the electronic clock 20 acquires the acceleration data transmitted from the ring device 10 via the communication unit 24 (step S201).

[0047] The CPU 21a of the electronic clock 20 determines whether the acquired acceleration data is above a preset threshold (step S202). The threshold is set to a value that allows for the identification of a state in which there is almost no body movement corresponding to the movement of fingers or wrists, that is, a state in which the user is maintaining a stationary posture. This is because a more restful state is required for measuring oxygen saturation concentration. Alternatively, the threshold may be set based on, for example, the peak value of the amplitude in the waveform of the reference acceleration data.

[0048] If the CPU 21a determines that the acceleration data measured by the ring device 10 is above a preset threshold, it notifies the user of a warning to maintain a resting state (step S203). After notifying the user of the warning, the CPU 21a returns to step S202 and determines again whether the acceleration data acquired from the ring device 10 is above a preset threshold.

[0049] As a notification method, for example, a vibration method may be used to alert the user by vibrating the ring device 10. In this case, the CPU 21a transmits a control signal to vibrate the ring device 10 to the ring device 10 via the communication unit 24. The CPU 11a of the ring device 10 vibrates the device body by driving the built-in vibrator mechanism based on the control signal received via the communication unit 13. A known vibrator mechanism can be used. Multiple arbitrary vibration patterns may be prepared, and the user may select a specific vibration pattern by operating the operation reception unit 22. Another notification method may be a light-emitting method that alerts the user by making the ring device 10 light up using an LED or the like. In this case, when the CPU 11a of the ring device 10 receives a control signal from the electronic clock 20 to make the ring device 10 light up, it controls the lighting of the light-emitting part such as the LED in a predetermined pattern. Another notification method may be a display method that displays warning information on the display screen of the display unit 23 of the electronic clock 20. In this case, the CPU 21a of the electronic clock 20 displays text or the like on the screen of the display unit 23 prompting the user to assume a stationary posture.

[0050] On the other hand, if the acceleration data measured on the ring device 10 is not above a preset threshold, that is, if it is below the threshold, the CPU 21a proceeds to step S204. In this case, the CPU 21a determines that the user's finger movements, wrist movements, etc. are in a resting state and starts measuring the oxygen saturation concentration (step S204). For example, the CPU 21a measures the user's oxygen saturation concentration using the pulse sensor 26 as a pulse oximeter.

[0051] According to the second embodiment, when measuring oxygen saturation, which requires the user to be in a resting state, the system checks for any movement of the user's fingers based on acceleration data acquired from the ring device 10. Furthermore, if movement of the user's fingers is detected, the ring device 10 vibrates to provide information prompting the user to remain still. This allows the user to measure oxygen saturation while in a resting state, enabling accurate measurement of oxygen saturation and allowing a highly accurate pulse rate to be displayed on the display unit 23 of the electronic clock 20.

[0052] Although preferred embodiments of this disclosure have been described in detail above with reference to the attached drawings, the technical scope of this disclosure is not limited to these examples. Furthermore, various modifications and improvements naturally fall within the technical scope of this disclosure, within the scope of the technical ideas described in the claims for those skilled in the art.

[0053] For example, an electronic watch 20 with GPS functionality can be equipped with a function that starts receiving radio waves from satellites when it detects power generation from sunlight at the time the user goes outside. However, if the user is wearing long sleeves, the electronic watch 20 worn on the wrist may be hidden by the sleeves, which may prevent the aforementioned GPS function from working. Therefore, an illuminance sensor that detects sunlight may be installed in the ring device 10. By providing an illuminance sensor in the ring device 10 worn on the finger, it is possible to prevent the illuminance sensor from being hidden even when the user is wearing long sleeves. As a result, the electronic watch 20 can accurately determine whether or not the user is going outside based on the illuminance information detected by the ring device 10, and can reliably operate the GPS function when the user is going outside.

[0054] Furthermore, although the above-described embodiment explained the case where wireless communication between the ring device 10 and the electronic clock 20 is BLE communication, the wireless communication method is not particularly limited. [Explanation of Symbols]

[0055] 1 Measurement system, 10 Ring device (ring instrument), 11a, 21a CPU (processor), 15 Accelerometer (first sensor), 20 Electronic clock (measuring instrument), 26 Pulse sensor (second sensor, biosensor)

Claims

1. A ring device equipped with a first sensor that outputs a first measurement value, A measuring instrument equipped with a second sensor that outputs a second measurement value, A measurement system including at least one processor, The processor controls the processing based on the second measurement value output by the second sensor of the measuring instrument based on the first measurement value output by the first sensor of the ring device, interrupts the processing by the measuring instrument based on the first measurement value output by the first sensor of the ring device, or notifies information regarding the measurement of the measuring instrument based on the first measurement value output by the first sensor of the ring device. Measurement system.

2. The first sensor is an acceleration sensor, the second sensor is a biosensor, and the measuring device is a wristwatch. The processor corrects the process of deriving biometric information based on the second measurement value of the biosensor of the wristwatch based on the first measurement value of the accelerometer of the ring device. The measurement system according to claim 1.

3. The first sensor is an acceleration sensor, the second sensor is a biosensor, and the measuring device is a wristwatch. The processor interrupts the measurement process by the biosensor of the wristwatch based on the first measurement value of the accelerometer of the ring device. The measurement system according to claim 1.

4. The first sensor is an acceleration sensor, the second sensor is a biosensor, and the measuring device is a wristwatch. The processor notifies warning information when the first measurement value of the acceleration sensor of the ring device exceeds a preset threshold. The measurement system according to claim 1.

5. A measuring device that can communicate wirelessly with a ring device equipped with a first sensor that outputs a first measurement value, A second sensor that outputs a second measurement value, A processor that controls processing based on the second measurement value output by the second sensor of the measuring device based on the first measurement value output by the first sensor of the ring device, interrupts processing by the measuring device based on the first measurement value output by the first sensor of the ring device, or notifies information regarding the measurement of the measuring device based on the first measurement value output by the first sensor of the ring device, Measuring equipment.

6. A measuring device equipped with a second sensor that outputs a second measurement value, and a wireless communication ring device, A first sensor that outputs a first measurement value, A processor that controls the first measurement output by the first sensor to output to the measuring instrument as information for controlling the processing based on the second measurement output by the second sensor of the measuring instrument, controlling the processing by the measuring instrument, or providing information related to the measurement by the measuring instrument, Ring equipment.

7. A ring device equipped with a first sensor that outputs a first measurement value and a computer of a measuring device that is wirelessly connected to a ring device and includes a second sensor that outputs a second measurement value, A control unit that controls processing based on the second measurement value output by the second sensor based on the first measurement value output by the first sensor of the ring device, interrupts processing by the measuring device based on the first measurement value output by the first sensor of the ring device, or notifies information regarding the measurement of the measuring device based on the first measurement value output by the first sensor of the ring device. A program designed to function as such.

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