JP2018126307A - Detection device and warning output program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress erroneous output of a warning by a detection device that issues a warning according to a pulse rate.SOLUTION: A detection device of one embodiment includes a pulse sensor for measuring a pulse wave, an acceleration sensor for measuring an acceleration speed, an output part, and a suppression part. The output part outputs a warning when a body load level indicating the strength of a body load specified based on the pulse rate acquired from the pulse wave measured by the pulse sensor exceeds a threshold level. The suppression part suppresses output of a warning from the output part based on the movement intensity acquired from the acceleration speed measured by the acceleration sensor.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a detection device and a warning output program.

  In recent years, in order to ensure the health and safety of workers at construction sites, factories, etc., a worker is equipped with a detection device equipped with a pulse sensor for detecting the pulse rate, for example, excessive movement by workers The status is monitored, such as whether a load is applied. A wearer wearing the detection device is hereinafter referred to as a user. When the detection device detects an abnormality in the user's pulse rate, a warning (alarm) is issued to prompt the user to rest. In this regard, a technique for appropriately detecting the pulse rate is known (for example, Patent Document 1).

JP, 2006-106640, A

However, for example, the pulse rate detected by the detection device may fluctuate due to the user's movement even though the user is not overly exercised. As a result, the detection device warns the user. May be output.
In one aspect, an object of the present invention is to suppress erroneous output of a warning by a detection device that issues a warning according to the pulse rate.

  A detection device according to one aspect of the present invention includes a pulse sensor that measures a pulse wave, an acceleration sensor that measures acceleration, an output unit, and a suppression unit. The output unit outputs a warning when the body load level indicating the strength of the body load specified based on the pulse rate obtained from the pulse wave measured by the pulse sensor exceeds the threshold level. The suppression unit suppresses output of a warning from the output unit based on the exercise intensity obtained from the acceleration measured by the acceleration sensor.

  It is possible to suppress erroneous output of a warning by a detection device that issues a warning according to the pulse rate.

It is a figure which illustrates the system for monitoring a user's state concerning an embodiment. It is a figure which illustrates the appearance of a detection device. It is a figure which illustrates the block configuration of the detection apparatus which concerns on embodiment. It is a figure which illustrates the operation | movement flow of the physical load level specific process which concerns on embodiment. It is a figure which illustrates the physical load level information which concerns on embodiment. It is a figure which illustrates the operation | movement flow of the parameter | index acquisition process of the exercise load which concerns on embodiment. It is a figure which illustrates judgment condition information about an exercise load concerning an embodiment. It is a figure which illustrates the operation | movement flow of the alert notification setting process which concerns on embodiment. It is a figure which illustrates the operation | movement flow of the warning output process which concerns on embodiment. It is a figure which shows an example of the hardware constitutions of the detection apparatus which concerns on embodiment.

  Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the corresponding element in several drawing.

  As described above, for example, the pulse rate detected by the detection device may fluctuate due to the user's movement, even though the user wearing the detection device is not subjected to excessive exercise load, As a result, the detection device may output a warning. The pulse sensor is a sensor for measuring the pulse rate. In one example, the pulse sensor irradiates the skin with light having an absorption wavelength that is absorbed by a component contained in blood (for example, hemoglobin), and detects the reflected light with a photodetector (PD: Photodetector). It may be a sensor for measuring. In this case, for example, the amount of blood in the light irradiation range (that is, the amount of hemoglobin) increases in the diastole when the blood vessel dilates in the pulsation of the pulse, and a large amount of light is absorbed by hemoglobin. Light is reduced. On the other hand, the amount of blood in the light irradiation range (that is, the amount of hemoglobin) decreases during the systole when the blood vessels contract, and the amount of light absorbed by hemoglobin decreases, so that the reflected light increases compared to the diastole. Therefore, the pulse wave can be measured by measuring the intensity of the reflected light with a photo detector. Furthermore, it is possible to obtain the pulse rate from the number of fluctuations of the measured pulse wave per unit time.

  Then, for example, by monitoring the user's pulse rate with the detection device, it is possible to monitor the user's state, such as whether the user is overly exercised. For example, when the user is in a state of high exercise load such as carrying a heavy load or moving quickly, the user's pulse rate is high. Therefore, when the user's pulse rate is high, the detection device outputs a warning because it is considered that the user is overloaded. Thereby, it becomes possible to ensure the health and safety of the user.

  However, for example, when the pulse rate is measured by wearing the detection device on the user's wrist, the detection device detects a high pulse rate and outputs a warning even though the user is not subjected to a large exercise load. Sometimes. In addition, a high pulse rate may be a pulse rate in which it is feared that the human state is abnormal. In one example, the high pulse rate may be a pulse rate that is equal to or higher than a predetermined threshold that can be determined as a state in which a possibility of causing a disorder such as a heart attack is concerned.

An example of a situation where the detection device detects a high pulse rate even though the user is not subjected to a large exercise load is shown below.
-When turning the screw with a screwdriver-When the terminal moves against the sleeve when the arm is moved-When the terminal moves due to vibration when the scoop hits the ground when digging a hole-When changing the light bulb-When measuring the tape measure When winding-When typing hard-When operating a machine that presses and hardens asphalt-When you get up suddenly

For example, as described above, a high pulse rate may be detected by the pulse sensor of the detection device in accordance with the movement of the user moving the part on which the detection device is mounted. As a cause of the high pulse rate generated here, for example, the following may be considered.
・ A small change in blood flow that occurs when the user moves ・ A small change that occurs in the received light intensity of the pulse sensor due to fine movement of the detection device when the user moves

  Although the high pulse rate that occurs in such a case is not an increase in the pulse rate due to the deterioration of the user's health condition or an increase in the exercise load on the user, it will be detected by the detection device regardless of the physical condition of the user, As a result, the detection device performs an erroneous output of the warning. Therefore, a technique that can suppress an erroneous output of a warning by a detection device that issues a warning according to the pulse rate is desired.

  In the embodiments described below, the detection device includes an acceleration sensor. And a detection apparatus acquires the parameter | index which shows the magnitude | size of the exercise load concerning a user based on the acceleration detected with the acceleration sensor. The index may be, for example, exercise intensity, activity amount, and number of steps.

  The exercise intensity may be represented by, for example, units represented by oxygen intake per kg body weight per unit time: METs. METs are units that represent the strength of physical activity. In METs, the strength of physical activity is represented by how many times it is at rest, for example, 1 METs may be sitting and resting, and 3 METs may be walking.

  The activity amount may be expressed by, for example, a unit: exercise (Ex). The exercise is a unit representing the amount of physical activity, and is obtained by multiplying the intensity METs of physical activity by the time (hour) of physical activity. Stronger physical activity reaches 1 exercise in less time.

  And a detection apparatus controls whether a warning is suppressed based on the parameter | index which shows the magnitude | size of the exercise load concerning a user, when a high pulse rate is detected by the pulse sensor. For example, when the user is not exercising vigorously and the exercise load is low, there is a possibility that the exercise load applied to the user is not reflected even if the pulse rate is high. Therefore, the detection device may suppress the output of the warning when it is predicted that the exercise load is low based on the index indicating the magnitude of the exercise load. Thereby, an erroneous output of a warning can be suppressed. Hereinafter, embodiments will be described in more detail.

  FIG. 1 is a diagram illustrating a system 100 for monitoring a user state according to an embodiment. The system 100 includes, for example, a detection device 101, a gateway (GW) 102, and a server 103. The detection apparatus 101 is an apparatus that measures the pulse rate of the user 110 wearing the detection apparatus 101, for example. In addition, when the detection apparatus 101 determines that the state of the user 110 is abnormal based on the pulse rate, the detection apparatus 101 notifies the gateway 102 of a warning via wireless communication such as Bluetooth (registered trademark), for example. For example, when receiving a warning from the detection apparatus 101, the gateway 102 notifies the server 103 of the warning via the network 105. Note that the gateway 102 may be, for example, a smartphone, a mobile phone, a tablet terminal, or the like. The gateway 102 may be, for example, a cellular communication device connected to a cellular communication network, a Wi-Fi communication device connected to a Wi-Fi base station, or the like. The server 103 manages the user 110 using the warning notified from the detection apparatus 101. For example, the server 103 may send a notification to a terminal owned by the user 110 determined to have an abnormality and prompt the user to take a break. Alternatively, the server 103 may transmit a notification that prompts the user 110 to pay attention to a terminal owned by the supervisor of the site where the user 110 works.

  FIG. 2 is a diagram illustrating the appearance of the detection apparatus 101. The figure on the left side shows the front side of the detection apparatus 101, and the figure on the right side shows the back side of the detection apparatus 101. In the example of FIG. 2, the detection device 101 includes, for example, an atmospheric pressure sensor 201, a temperature / humidity sensor 202, a microphone 203, a power button 204, a state display LED (light emitting diode) 205, a pulse sensor 206, and a housing 207. The atmospheric pressure sensor 201 is, for example, a sensor that measures atmospheric pressure. The temperature / humidity sensor 202 is, for example, a sensor that measures temperature and humidity. For example, the microphone 203 accepts an external sound input. The power button 204 is a button for turning on and off the power of the detection apparatus 101, for example. The status display LED 205 outputs light indicating the status of the detection device 101, for example. For example, the pulse sensor 206 measures the pulse wave of the user wearing the detection device 101. In addition, the detection apparatus 101 of FIG. 2 may be mounted | worn with a user's arm, for example. However, the shape and the mounting part of the detection device 101 are not limited to this, and have other shapes as long as the pulse rate can be measured according to the use of the detection device 101, and is attached to other mounting parts. May be.

  FIG. 3 is a diagram illustrating a block configuration of the detection apparatus 101 according to the embodiment. The detection device 101 includes, for example, a control unit 301, a storage unit 302, a pulse sensor 206, an acceleration sensor 303, and a communication unit 304. The control unit 301 may operate as, for example, the output unit 311 and the suppression unit 312. The storage unit 302 of the detection apparatus 101 stores information such as body load level information 500 and determination condition information 700 described later. For example, the pulse sensor 206 measures a pulse wave in accordance with an instruction from the control unit 301. For example, the acceleration sensor 303 measures acceleration according to an instruction from the control unit 301. For example, the communication unit 304 may connect to the gateway (GW) 102 and transmit / receive data to / from the server 103 via the gateway 102 in accordance with an instruction from the control unit 301. Note that the communication unit 304 may be, for example, a short-range wireless communication device that performs communication using Bluetooth (registered trademark), Wi-Fi (registered trademark), or the like. Further details of these units and details of information stored in the storage unit 302 will be described later.

  First, the body load level specifying process for specifying the body load level representing the strength of the body load using the pulse rate obtained from the pulse wave detected by the pulse sensor 206 will be described. FIG. 4 is a diagram illustrating an operation flow of the physical load level specifying process according to the embodiment. For example, when the body load level specifying process is activated in S802 of FIG. 8 to be described later, the control unit 301 may start the body load level specifying process of FIG.

  In step S401, the control unit 301 determines whether a stop instruction has been input. Note that the stop instruction may be output in S805 of FIG. When a stop instruction is input (S401 is Yes), this operation flow ends. On the other hand, when the stop instruction is not input (S401 is No), the flow proceeds to S402.

In S402, the control unit 301 acquires the pulse rate from the pulse wave measured by the pulse sensor. In S403, the control unit 301 calculates the physical load from the acquired pulse rate. The physical load can be calculated by, for example, the Karvonen Formula. As an example, it may be calculated by the following Carbonen equation:
Body load = (pulse rate ÷ maximum pulse rate) x 100

  In the above formula, for example, the maximum pulse rate of a person can be used as the maximum pulse rate. For example, a value of “maximum pulse rate = 220−age” can be used.

  In S <b> 404, the control unit 301 refers to the body load level information 500 and specifies the body load level corresponding to the calculated body load.

  FIG. 5 is a diagram illustrating body load level information 500 according to the embodiment. The physical load level information 500 is, for example, information that associates a range of physical load with a physical load level. Note that the body load level information 500 in FIG. 5 indicates a state in which the risk of the user having an abnormality increases toward the right side, and indicates a state in which the possibility of the user having an abnormality decreases toward the left side. That is, the physical load level 5: danger indicates that the user is more likely to have an abnormality than the physical load level 4: strict warning. The body load level information 500 can be created based on data such as the value of the body load and the number of occurrences of abnormalities in the user with the value of the body load, for example.

  In S404, for example, if the calculated body load is a value in the range of a to b, the control unit 301 may specify the body load level 1: almost safe. For example, if the physical load is a value in the range of i to j, the control unit 301 may specify physical load level 5: danger.

  In S405, the control unit 301 stores the specified level in the storage unit 302, and the flow returns to S401.

  As described above, in the body load level specifying process of FIG. 4, the control unit 301 can acquire the body load level representing the strength of the body load applied to the user from the pulse rate of the user of the detection apparatus 101. it can.

  Subsequently, FIG. 6 is a diagram illustrating an operation flow of exercise load index acquisition processing according to the embodiment. For example, when the exercise load index acquisition process is activated in S801 of FIG. 8 described later, the control unit 301 may start the exercise load index acquisition process of FIG.

  In step S <b> 601, the control unit 301 determines whether an instruction to stop exercise load index acquisition processing has been input. The instruction to stop the exercise load index acquisition process may be input from, for example, S804 in the operation flow of FIG. When a stop instruction is input (S601 is Yes), this operation flow ends. On the other hand, when the stop instruction is not input (No in S601), the flow proceeds to S602.

In step S <b> 602, the control unit 301 acquires, for example, the acceleration value measured by the acceleration sensor 303. In step S <b> 603, the control unit 301 calculates exercise intensity from the acquired acceleration value. For example, the control unit 301 removes the gravitational acceleration component from the acceleration value measured by the acceleration sensor 303 and calculates the exercise intensity by multiplying a value obtained by averaging the magnitude of the obtained acceleration over a unit time and a predetermined coefficient. You can do it. Note that the method of calculating the exercise intensity is not limited to this, and for example, other than the average value, representative values representing other accelerations such as a median value and an intermediate value may be used. In addition, the predetermined coefficient is, for example, experimentally collected the relationship between the exercise intensity obtained from the oxygen intake and the maximum oxygen intake by the following formula and the acceleration during exercise indicating the exercise intensity, It can be obtained by fitting. The oxygen intake is, for example, the oxygen intake per kg body weight per unit time. The maximum oxygen intake is, for example, the maximum amount of oxygen consumption measured by incremental exercise.
Exercise intensity = oxygen intake ÷ maximum oxygen intake

  In step S <b> 604, the control unit 301 stores the calculated exercise intensity value in the storage unit 302. In step S605, the control unit 301 determines whether one step has been detected. In addition, the method currently utilized with the pedometer etc. can be used for the detection of 1 step, for example. In one example, the control unit 301 may determine that the step is one step when the acceleration in the gravitational acceleration direction fluctuates more than a threshold value within a predetermined time. If one step has not been detected (No in S605), the flow returns to S601. On the other hand, when one step is detected (Yes in S605), the flow proceeds to S606. In S606, the control unit 301 adds 1 to the accumulated number of steps stored in the storage unit 302 to update the number of steps, stores the updated number of steps in the storage unit 302, and the flow returns to S601.

  As described above, according to the exercise load index acquisition processing of FIG. 6, the control unit 301 determines the exercise intensity and the number of steps that can be used as the exercise load index based on the acceleration measured by the acceleration sensor 303. Can be acquired.

  Next, warning notification setting processing will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram illustrating determination condition information 700 according to the embodiment. In the determination condition information 700, for example, an entry indicating a condition for performing a setting for suppressing warning output is registered. For example, the detection apparatus 101 outputs a warning when the body load level specified based on the pulse rate measured by the pulse sensor 206 is equal to or higher than a predetermined level. An entry that includes a condition that suppresses output is registered.

  In the example of FIG. 7, the determination condition information 700 includes an exercise load index, a threshold value, and determination. In the example of FIG. 7, exercise intensity and the number of steps are shown as exercise load indices, and threshold values and determination conditions for suppressing warnings using the threshold values are registered for each of the exercise intensity and the number of steps.

  For example, in the first entry of the determination condition information 700, if the exercise intensity in a predetermined unit time (for example, a value from 5 seconds to 20 seconds) is less than the threshold A, it indicates that warning output is suppressed. Judgment conditions are shown. This is because, for example, in a situation where the exercise intensity is sufficiently low and the user is exercising with a small exercise load such as walking slowly, the pulse rate based on the measurement value of the pulse sensor 206 is higher than a predetermined threshold value. This is because the possibility that the user will have an abnormality is also low. In this case, the control unit 301 of the detection apparatus 101 may suppress warning output.

  For example, in the second entry of the determination condition information 700, if the number of steps measured within a predetermined unit time (for example, a value from 5 seconds to 20 seconds) is less than B, the warning is suppressed. Judgment conditions indicating are shown. For example, in a situation where the number of steps is less than a predetermined threshold B, and the user is performing a low-load exercise such as moving only the arm without moving much, even when the pulse rate is higher than the predetermined threshold, This is because it is considered that the possibility that the user will have an abnormality is low. In this case, the control unit 301 may suppress warning output. Note that the number of steps may be counted using, for example, a change in the magnitude of the detection value of the acceleration sensor or a change in acceleration in the direction of gravity. In this case, for example, the number of steps is not counted only by shaking the wrist in the horizontal direction. On the other hand, even when the wrist is shaken in the lateral direction, the blood flow may vary, and a high pulse rate may be detected. However, according to the determination condition in the second stage of the determination condition information 700, the warning output is suppressed when the number of steps is small, so that an erroneous output of the warning can be suppressed.

  For example, the determination may be made by combining exercise intensity and the number of steps. That is, for example, when the exercise intensity is less than A and the number of steps is less than B, it is considered that the user is hardly moving, so the control unit 301 of the detection apparatus 101 may suppress the warning.

  Next, a warning notification setting process using the determination condition indicated in the determination condition information 700 will be described.

  FIG. 8 is a diagram illustrating an operation flow of a warning notification setting process according to the embodiment. For example, the control unit 301 of the detection apparatus 101 may start the warning notification setting process of FIG. 8 when monitoring of the user state is started.

  In step S <b> 801, the control unit 301 of the detection apparatus 101 starts executing the exercise load index acquisition process described in FIG. 6. In the exercise load index acquisition processing, for example, values serving as exercise load indexes such as exercise intensity and the number of steps may be acquired.

  In step S802, the control unit 301 starts executing the body load level specifying process described in FIG. In the body load level specifying process, for example, the body load level may be acquired based on the pulse rate.

  In step S803, the control unit 301 determines whether a stop instruction is input from the user. For example, the user may input a stop instruction to the detection device 101 by pressing a power button of the detection device 101. When a stop instruction is input (S803: Yes), the flow proceeds to S804.

  In step S804, the control unit 301 outputs a stop request for stopping the exercise load index acquisition process. In step S805, the control unit 301 outputs a stop request for stopping the body load level specifying process, and the operation flow ends.

  On the other hand, if a stop instruction is not input in S803 (S803: No), the flow proceeds to S807. In step S807, the control unit 301 reads and acquires exercise load index values such as exercise intensity and the number of steps stored in the storage unit 302 in the exercise load index acquisition process started in step S801.

  In step S808, the control unit 301 determines whether the acquired exercise intensity is less than a threshold value. For example, the control unit 301 may obtain the threshold A for the exercise intensity with reference to the determination condition information 700. When the acquired exercise intensity is equal to or greater than the threshold A (No in S808), the flow proceeds to S810. In S810, the control unit 301 sets 0 indicating that the exercise intensity is high in the exercise intensity flag, and the flow proceeds to S811.

  On the other hand, when the exercise intensity acquired in S808 is less than the threshold value A (S808 is Yes), the flow proceeds to S809. In this case, it is estimated that the user is in a situation of exercising with a small exercise load such as walking slowly. In this case, in S809, the control unit 301 sets 1 indicating that the exercise intensity is small in the exercise intensity flag, and the flow proceeds to S811.

  In step S811, the control unit 301 determines whether the acquired number of steps is less than a threshold value. For example, the control unit 301 may obtain the threshold B for the number of steps with reference to the determination condition information 700. If the acquired number of steps is equal to or greater than the threshold B (No in S811), the flow proceeds to S813. In S813, the control unit 301 sets 0 indicating that the number of steps is large in the step count flag, and the flow proceeds to S814.

  On the other hand, if the number of steps acquired in S811 is less than the threshold value B (S811 is Yes), the flow proceeds to S812. In this case, it is estimated that the user is in a situation where the user is performing an exercise with a low load, such as moving only the arm. Therefore, in S812, the control unit 301 sets 1 indicating that the number of steps is small in the step count flag, and the flow proceeds to S814.

  In S814, the control unit 301 determines whether or not both the exercise intensity flag and the step count flag are 1. If both the exercise intensity flag and the step count flag are 1 (Yes in S814), the flow proceeds to S815. When both the exercise intensity flag and the step count flag are 1, it is estimated that the user of the detection apparatus 101 has almost no movement, and therefore it is predicted that the exercise load applied to the user is not so high. Therefore, in step S815, the control unit 301 sets the warning to non notification, and the flow returns to step S803. In this case, for example, even if the physical load level specified from the pulse rate acquired using the pulse sensor 206 is high, the control unit 301 suppresses the output of the warning. On the other hand, if both the exercise intensity flag and the step count flag are not 1 in S814 (No in S814), the flow proceeds to S816.

  In S816, the control unit 301 determines whether or not the exercise intensity flag is 1. If the exercise intensity flag is 1 (Yes in S816), the flow proceeds to S817. When the exercise intensity flag is 1, it is estimated that the user of the detection apparatus 101 is exercising slowly, and it is predicted that the exercise load applied to the user is not so high. For this reason, in step S817, the control unit 301 sets the warning to non notification, and the flow returns to step S803. Similarly, in this case, for example, even if the physical load level specified from the pulse rate is high, the control unit 301 suppresses the output of the warning. On the other hand, if the exercise intensity flag is not 1 in S816 (S816 is No), the flow proceeds to S818.

  In S818, the control unit 301 determines whether or not the walking flag is 1. When the walking flag is 1 (Yes in S818), the flow proceeds to S819. When the walking flag is 1, it is estimated that the user of the detection device 101 is moving the wearing part of the detection device 101 such as an arm without moving so much, so the exercise load on the user is not so much. Not expected to be high. Therefore, in step S819, the control unit 301 sets the warning to non notification, and the flow returns to step S803. On the other hand, when the walking flag is not 1 in S818 (S818 is No), the flow proceeds to S820.

  In step S820, the control unit 301 sets a warning to notification, and the flow returns to step S803. In this case, for example, if the physical load level specified from the pulse rate is high, the control unit 301 outputs a warning.

  FIG. 9 is a diagram illustrating an operation flow of warning output processing according to the embodiment. For example, the control unit 301 of the detection apparatus 101 may start the warning output process of FIG. 9 when monitoring of the user state is started.

  In step S901, the control unit 301 confirms the warning notification setting, and determines whether the notification is set. When the warning notification setting is set to non notification (S901: No), the flow repeats the processing of S901. On the other hand, if the warning notification setting is set to notification (S901: Yes), the flow proceeds to S902.

  In S902, the control unit 301 reads the physical load level stored in the storage unit 302 in the operation flow of FIG. In step S903, it is determined whether the body load level is equal to or higher than a threshold level. As described in the description of FIG. 4, the physical load level may be a level assigned to the physical load calculated by, for example, the Karvonen Formula. Further, the threshold level used for the determination may be set to a body strength level for which it is desirable to issue a warning in the body load level information 500, for example. For example, the threshold level may be set to a body strength level that can detect a situation in which the user is likely to cause an abnormality. For example, in the example of FIG. 5, a threshold level may be set for the physical load level 4 or the physical load level 5.

  If the physical load level is less than the threshold level in S903 (No in S903), the flow returns to S901. On the other hand, when the physical load level is equal to or higher than the threshold level in S903 (Yes in S903), the flow proceeds to S904.

  In step S904, the control unit 301 outputs a warning and the flow ends. For example, the control unit 301 may connect to the gateway 102 via the communication unit 304 and output a warning to the server 103 via the gateway 102. For example, when the server 103 receives the warning, the server 103 can prompt the user 110 to rest by notifying the warning to a terminal or the like owned by the supervisor of the work site where the user 110 is working. .

  As described above with reference to FIGS. 8 and 9, according to the embodiment, the control unit 301 of the detection apparatus 101 has a low exercise load based on an exercise load index such as exercise intensity or walking. Suppress warning output in situations where Therefore, it is possible to prevent an abnormality from being detected in the pulse rate and output a warning in a situation where the exercise load on the user is low, and the output accuracy of the warning is improved.

  For example, in the embodiment, the exercise load applied to the user is acquired using both the physical load level based on the pulse rate and the exercise intensity estimated from the acceleration. For example, even when it is estimated that the exercise load applied to the user is high based on the pulse rate, the warning output is suppressed if the exercise load applied to the user is estimated to be low from the exercise intensity acquired from the acceleration. doing. Therefore, even if a high pulse rate is detected due to small changes in blood flow that occur when the user moves or because the detection device 101 moves finely when the user moves, a warning is erroneously output. Can be prevented.

  In the above-described embodiment, the warning output is suppressed using the number of steps in addition to the exercise intensity. In this way, by estimating the exercise load applied to the user based on a plurality of exercise load indicators and suppressing the warning output, erroneous output of the warning can be suppressed with high accuracy.

  In the operation flow of FIG. 8 described above, after determining using both the exercise intensity and the number of steps in S814, the determination is made using each of the exercise intensity and the number of steps individually in S816 and S818, and the warning is not notified. Although the setting is performed, the embodiment is not limited to this. In another embodiment, some of the determinations of S814, S816, and S818 may not be performed. For example, when the determinations of S816 and S818 are not executed, if the determination is No in S814, the flow may proceed to S820. In this case, since the warning non-notification setting is performed using both the exercise intensity and the number of steps, the possibility of suppressing the warning output in a situation where the user is actually exercising with a high exercise load is reduced. be able to.

  In the above, although embodiment was illustrated, embodiment is not limited to this. For example, the above-described operation flow is an example, and the embodiment is not limited to this. If possible, the operation flow may be executed by changing the order of processing, may include additional processing, or some processing may be omitted. For example, the processes of S801 and S802 in FIG. Further, the processes of S804 and S805 in FIG.

  Moreover, although the case where exercise intensity was used as an index of exercise load was illustrated in the above-described embodiment, the embodiment is not limited to this. For example, in another example, the control unit 301 may acquire an activity amount by taking time for the acquired exercise intensity in the above-described operation flow, and may make a determination using the activity amount instead of the exercise intensity. .

  Note that the control unit 301 may operate as the output unit 311 in the processing of S904 in the operation flow of FIG. Further, the control unit 301 may operate as the inhibiting unit 312 in the processing from S807 to S820 in the operation flow in FIG. 8 and the processing in S901 in the operation flow in FIG.

  FIG. 10 is a diagram illustrating an example of a hardware configuration of the detection apparatus 101 according to the embodiment. For example, as illustrated in FIG. 2, the detection device 101 may be a device that is worn on the user's arm or the like and detects the user's vitals. The detection apparatus 101 includes, for example, a processor 1001, a memory 1002, an acceleration sensor 303, a pulse sensor 206, and a communication device 1005. The processor 1001 may be connected to each unit of the detection device 101 such as the memory 1002, the acceleration sensor 303, the pulse sensor 206, and the communication device 1005, for example.

  The memory 1002 is, for example, a semiconductor memory, and may include a RAM area and a ROM area. Note that RAM is an abbreviation for Random Access Memory. ROM is an abbreviation for Read Only Memory. The memory 1002 is an example of the storage unit 302.

  The processor 1001 may be a single processor, a multiprocessor or a multicore, for example. For example, the processor 1001 reads and executes a warning output program describing a procedure of an operation flow executed by the control unit 301 using the memory 1002, thereby executing one of the operation flows executed by the control unit 301. Provides part or all functions.

  For example, the acceleration sensor 303 measures acceleration according to an instruction from the processor 1001 and notifies the processor 1001 of the acceleration. The pulse sensor 206 measures a pulse wave in accordance with an instruction from the processor 1001 and notifies the processor 1001 of the pulse wave. The pulse sensor 206 may include, for example, an LED that emits light, a photo detector (PD) that detects reflected light of the emitted light, and a control IC (Integrated Circuit) that controls the LED and PD. In addition, LED may irradiate the light which has a wavelength in the range of 525-625 nm in one example. In one example, the photodetector may detect light having a wavelength in the range of 525 to 625 nm.

  For example, the communication device 1005 may connect to the gateway (GW) 102 and transmit / receive data to / from the server 103 via the gateway 102 in accordance with an instruction from the processor 1001. Note that the communication device 1005 may be a short-range wireless communication device that performs communication using, for example, Bluetooth (registered trademark) or Wi-Fi (registered trademark). The communication device 1005 is an example of the communication unit 304.

  The hardware configuration for realizing the detection apparatus 101 described with reference to FIG. 10 is an exemplification, and the embodiment is not limited to this. For example, some or all of the functions of the above-described functional units may be implemented as hardware such as FPGA and SoC. Note that FPGA is an abbreviation for Field Programmable Gate Array. SoC is an abbreviation for System-on-a-chip.

  In the above, several embodiments are described. However, the embodiments are not limited to the above-described embodiments, and should be understood as including various modifications and alternatives of the above-described embodiments. For example, it will be understood that various embodiments can be embodied by modifying the components without departing from the spirit and scope thereof. It will be understood that various embodiments can be implemented by appropriately combining a plurality of components disclosed in the above-described embodiments. Further, various embodiments may be implemented by deleting or replacing some components from all the components shown in the embodiments, or adding some components to the components shown in the embodiments. Those skilled in the art will appreciate that this can be done.

100 System 101 Detection Device 102 Gateway 103 Server 105 Network 110 User 201 Barometric Pressure Sensor 202 Temperature / Humidity Sensor 203 Microphone 204 Power Button 205 Status Display LED
206 Pulse sensor 207 Housing 301 Control unit 302 Storage unit 303 Acceleration sensor 304 Communication unit 311 Output unit 312 Suppression unit 1001 Processor 1002 Memory 1005 Communication device

Claims (6)

A pulse sensor that measures the pulse wave;
An acceleration sensor that measures acceleration;
An output unit that outputs a warning when the body load level representing the intensity of the body load specified based on the pulse rate obtained from the pulse wave measured by the pulse sensor exceeds a threshold level;
A deterring unit that deters the output of the warning from the output unit based on exercise intensity obtained from acceleration measured by the acceleration sensor;
Including a detection device.   The detection device according to claim 1, wherein when the exercise intensity obtained from the acceleration measured by the acceleration sensor is smaller than a first threshold value, the inhibition unit inhibits the output of the warning from the output unit. .   The said suppression part suppresses the output of the said warning from the said output part, when the activity amount computed based on the said exercise intensity obtained from the said acceleration measured with the said acceleration sensor is smaller than a 2nd threshold value. Item 2. The detection device according to Item 1.   The detection according to claim 1, wherein the suppression unit further suppresses the output of the warning from the output unit when the number of steps detected based on the acceleration measured by the acceleration sensor is smaller than a third threshold value. apparatus.   In the case where the exercise intensity obtained from the acceleration measured by the acceleration sensor is smaller than a first threshold and the number of steps detected based on the acceleration is smaller than a second threshold, The detection device according to claim 1, wherein output of the warning from the device is suppressed. When the body load level that represents the strength of the body load specified based on the pulse rate obtained from the pulse wave measured by the pulse sensor that measures the pulse wave exceeds the threshold level, a warning is output,
Suppress the output of the warning based on the exercise intensity obtained from the acceleration measured by the acceleration sensor that measures the acceleration,
A warning output program executed by the detection device.

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