JP2018134137A - Heat stroke prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat stroke prevention device capable of determining a risk of heat stroke, adaptively to an ambient environment or a utilization environment.SOLUTION: A heat stroke prevention device includes a deep body temperature probe 200 attached to a position abutting on a head part of a wearer, inside a helmet 10 which is a head mounting fixture mounted on a head of a human body, for measuring a deep body temperature of the wearer, heat stroke risk determination means for determining a risk of being affected by heat stroke of the wearer based on the deep body temperature measured by the deep body temperature probe 200, and alarm means for issuing alarm corresponding to the risk determined by the heat stroke risk determination means.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heatstroke prevention apparatus that warns of the risk of heatstroke and prevents morbidity.

  The summer temperature is on the rise due to the recent global warming. Along with this, an increasing number of people suffer from heat stroke. In work sites such as construction sites and civil engineering sites, long-sleeved work clothes and helmets are often required from the viewpoint of safety management. In addition, elderly people and persons with disabilities may not only be aware of changes in physical condition, but may be difficult to take appropriate measures even if they can be aware of changes in physical condition. For this reason, it is important to quickly detect the risk of heat stroke.

  WBGT (Wet Bulb Globe Temperature) has been proposed as an index for determining the risk of heat stroke. WBGT is an index that focuses on heat exchange (heat balance) between the human body and the outside air. WBGT is an index that incorporates three factors: humidity, the surrounding thermal environment such as solar radiation and radiation, and temperature, which have a large effect on the heat balance of the human body. Patent Document 1 describes a device that calculates a risk of heat stroke based on measured WBGT and issues an alarm.

  The WBGT is only an index for evaluating the surrounding environment. However, the risk of suffering from heat stroke varies among individuals. Furthermore, the degree of risk varies depending on the person's clothes and activity. For this reason, the apparatus described in Patent Document 1 has a problem that it is difficult to accurately determine the risk of heat stroke. In view of this, a system has been developed that measures biological information such as a person's body temperature and heart rate and determines the risk of heat stroke based on the measured biological information (see, for example, Patent Document 2).

Utility model registration No. 3157604 JP 2012-187127 A JP2015-169551A

  However, it is difficult for the heart rate used as biometric information to distinguish between fluctuation due to thermal load and fluctuation due to exercise load, and furthermore, fluctuation in heart rate varies among individuals. The body temperature used as biological information is generally a temperature measured on the body surface. This measured body temperature varies depending on physical condition, surrounding environment, clothing situation, and the like. For this reason, it is difficult to accurately measure an increase in body temperature. Under such circumstances, it has been difficult for the conventional system to accurately determine the risk of heat stroke.

  On the other hand, a system for determining the risk of heat stroke is required to be easy to use according to the human environment. For example, it is required that it does not get in the way of field work, and that the apparatus can be easily mounted.

  This invention is made | formed in view of the said situation, The place made into the objective is providing the heat stroke prevention apparatus which can determine the risk of heat stroke adapting to a surrounding environment or utilization environment.

  In order to achieve the above object, a heat stroke prevention device according to the present invention is provided inside a head wearing tool to be worn on the head of a human body and attached to a position in contact with the head of the wearer. A deep body temperature probe for measuring body temperature, a heat stroke risk determination means for determining a risk of the wearer suffering from heat stroke based on the deep body temperature measured by the deep body temperature probe, and a heat stroke risk determination means And an alarm means for issuing an alarm according to the determined degree of risk.

  According to the heat stroke prevention apparatus according to the present invention, since the risk of heat stroke is determined based on the wearer's deep body temperature, accurate determination can be performed without being affected by the wearer's surrounding environment and use environment. it can. In addition, according to the heat stroke prevention apparatus according to the present invention, since it is provided in the head-mounted device, it is highly convenient without affecting the wearer's activity and workability.

Top view of the helmet from the bottom side Sectional view of the helmet from the side Cross section of deep body temperature probe The figure explaining the charge method of a heat stroke prevention device Functional block diagram of the heat stroke prevention apparatus according to the first embodiment The flowchart explaining operation | movement of the heat stroke risk determination part which concerns on 1st Embodiment. The top view explaining other attachment positions of a deep body temperature probe The top view explaining other attachment positions of a deep body temperature probe Sectional view of a deep body temperature probe according to another example Functional block diagram of the heat stroke prevention apparatus according to the second embodiment The flowchart explaining operation | movement of the heat stroke risk determination part which concerns on 1st Embodiment. Functional block diagram of the heat stroke prevention apparatus according to the third embodiment Functional block diagram of the heat stroke prevention apparatus according to the fourth embodiment Functional block diagram of the heat stroke prevention apparatus according to the fifth embodiment

(First embodiment)
A heat stroke prevention apparatus according to a first embodiment of the present invention will be described with reference to the drawings. It is assumed that the heat stroke prevention apparatus according to the present embodiment is used in various work sites such as a construction site and a civil engineering site. In addition, it is assumed that the heat stroke prevention apparatus according to the present embodiment is provided in a helmet worn by a wearer as a head wearing tool. FIG. 1 is a plan view of the helmet viewed from the bottom side, and FIG. 2 is a cross-sectional view of the helmet viewed from the side.

  The helmet 10 has the same structure as a conventionally known one used in various work sites. The helmet 10 is also called a protective cap. As shown in FIGS. 1 and 2, the helmet 10 includes a cap body 11 formed of a hard material such as synthetic resin or metal, a shock absorbing liner 12 provided on the inner surface of the cap body 11, and a liner 12. A stretchable hammock 13 disposed inside the head, a headband 14 surrounding the wearer's head, and a chin strap (not shown) extending downward from both sides of the cap body 11 are provided. A eaves 11 a is formed at the front portion of the cap body 11. The hammock 13 is configured by arranging a plurality of legs radially. The end of the leg of the hammock 13 is attached to the cap body 11. The headband 14 is attached inside the hammock 13. The headband 14 is provided with a length adjusting mechanism (not shown). A predetermined gap is formed between the hammock 13, the cap body 11, and the liner 12.

  The heat stroke prevention apparatus 100 according to the present embodiment includes a deep body temperature probe 200 for measuring a wearer's deep body temperature, and a box-shaped storage unit 300 that stores electrical components and the like. The deep body temperature probe 200 is provided at a position inside the headband 14 or the hammock 13 (on the wearer side) and in contact with the wearer. The contact position with the wearer is preferably a position where the wearer can easily come into direct contact with the body surface such as the forehead or the temple. However, although it is difficult to directly contact the body surface (scalp) with the hair, it may be contacted at any position of the head with hair. In the example of FIGS. 1 and 2, the deep body temperature probe 200 is provided on the front inner side of the headband 14 and abuts the wearer's forehead or forehead.

  The deep body temperature probe 200 uses, for example, a twin heat flow method disclosed in Patent Document 3. As shown in FIG. 3, the deep body temperature probe 200 includes a two-stage disk-shaped heat insulating material 210 having a thick center and a thin periphery, and temperature sensors disposed on both sides of a thick portion 211 and a thin portion 212 of the heat insulating material 210. 221, 223, 222, and 224, and a cover 230 made of an aluminum plate that is a low emissivity material that covers the peripheral side surface and the outside air surface of the heat insulating material 210. The temperature sensors 221 and 222 formed on the bottom surface of the heat insulating material 210, that is, the contact surface with the human body are substantially flush with the bottom surface of the heat insulating material 210. For the principle and structure of the deep body temperature probe 200, refer to Patent Document 3 described above. The invention of the present application can be implemented even if it is disclosed in the prior art of the same document.

  As shown in FIGS. 1 and 2, the storage unit 300 is disposed in the rear of the inner surface of the cap body 11 and in the gap with the hammock 13. The accommodating part 300 can also be arrange | positioned in the arbitrary positions ranging from the inner surface rear part of the cap body 11 to the inner surface side part. The storage unit 300 is preferably formed integrally with the cap body 11, but may be separate from the cap body 11. A charging terminal 301 for transmitting charging power is attached to the front surface of the storage unit 300. When charging, as shown in FIG. 4, for example, the rear portion of the helmet 10 is hooked on the hook 410 of the charging device 400 installed on the wall surface. Thereby, the charging terminal 411 formed on the upper surface of the hook 410 and the charging terminal 301 of the storage unit 300 are electrically connected, and the heat stroke prevention device 100 can be charged. In addition, instead of the charging terminal 301 of the storage unit 300 and the charging terminal 411 of the charging device 400, a coil or the like for transmitting power in a non-contact manner may be provided.

  FIG. 5 shows a functional block diagram of the heat stroke prevention apparatus. In addition to the deep body temperature probe 200, the heat stroke prevention apparatus 100 includes a heat stroke risk determination unit 310, an alarm unit 320, and a power supply unit 330. The deep body temperature probe 200 is electrically connected to the heat stroke risk determination unit 310 by wire (not shown). Heat stroke risk determination unit 310, alarm unit 320, and power supply unit 330 are stored in storage unit 300.

  The heat stroke risk determination unit 310 calculates the deep body temperature based on the temperature measured by each temperature sensor of the deep body temperature probe 200, determines the risk of heat stroke based on the deep temperature, and according to the determined risk. The alarm unit 320 controls to issue an alarm. For the method of calculating the deep body temperature, refer to Patent Document 3 described above. As the alarm unit 320, various devices such as a display device such as an LED or an LCD, an audio output device such as a speaker, or a combination thereof can be used. The power supply unit 330 includes a known stabilization circuit, secondary battery, and charging circuit (not shown). The charging circuit of the power supply unit 330 charges the secondary battery with the power supplied from the charging device 400.

  The operation of the heat stroke risk determination unit according to the present embodiment will be described with reference to the flowchart of FIG. The heat stroke risk determination unit 310 checks whether or not there is an error in the deep body temperature probe 200, and controls the alarm unit 320 to display a predetermined error if there is an error (steps S1 and S5). . Next, the heat stroke risk determination unit 310 calculates the depth body temperature based on the temperature measured by each temperature sensor of the depth body temperature probe 200 (step S2), and the calculated depth temperature is equal to or higher than a predetermined threshold (eg, 38 ° C.). In this case, the alarm unit 320 is controlled to display that the body temperature is rising (steps S3 and S4).

  Thus, according to the heat stroke prevention device according to the present embodiment, since the risk of heat stroke is determined based on the wearer's deep body temperature, it is accurate without being affected by the surrounding environment or use environment of the wearer. Determination can be made. Moreover, according to the heat stroke prevention apparatus according to the present embodiment, since it is provided on the helmet of the wearer, the convenience is high without affecting the workability.

  In addition, in the said embodiment, the deep body temperature probe 200 is provided in the front inner side of the headband 14, and contact | abuts to a wearer's frontal head or forehead, However, You may arrange | position in another place. In the example of FIG. 7, the deep body temperature probe 200 is provided inside either the left or right side of the headband 14 or both, and abuts near the wearer's temple. In the example of FIG. 8, the deep body temperature probe 200 is provided inside the center of the hammock 13 and abuts near the top of the wearer's head.

  In addition, for example, when the deep body temperature probe 200 is provided at a position with hair such as the top of the head as shown in FIG. 8, when the protrusions 240 are provided on the temperature sensors 221 and 222 as shown in FIG. 9, It is preferable that it can be brought into contact with the body surface through the gaps in the hair. In this case, it is preferable to provide a dummy protrusion 250 in addition to the protrusion 240 on the bottom surface of the deep body temperature probe 200 in order to stabilize the contact surface.

(Second Embodiment)
A heat stroke prevention apparatus according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a functional block diagram of the heat stroke prevention apparatus according to the second embodiment.

  As shown in FIG. 10, the heat stroke prevention apparatus according to the present embodiment is provided with a WBGT measurement unit 340 in addition to the heat stroke prevention apparatus according to the first embodiment. Other components such as the configuration of the helmet 10 are the same as those in the first embodiment. Only the differences will be described here.

  As the WBGT measuring unit 340, a conventionally known one is used, and one having an outside air temperature sensor, an outside air humidity sensor and a WBGT calculating unit, and one having a black sphere temperature sensor are used. In the present embodiment, an outside air temperature sensor, an outside air humidity sensor, and a WBGT calculation unit are used. Various forms of attachment of each sensor are conceivable, such as being arranged in the vicinity of the vent formed in the storage unit 300, attached to the outer surface of the storage unit 300, or attached to the outside of the helmet 10.

  The WBGT calculation unit of the WBGT measurement unit 340 calculates WBGT by the following equation.

WBGT = 0.735 × Ta
+0.0374 x RH
+ 0.00292 × Ta × RH
+ 7.619 × SR−4.557 × SR ²
−0.0572 × WS−4.064

Here, Ta is the temperature (° C.), RH is the relative humidity (%), SR is the total solar radiation (KW / m ² ), and WS is the average wind speed (m / s). In this embodiment, since there is no means for measuring the total solar radiation amount and the average wind speed, these values use predetermined coefficients. In this embodiment, the total solar radiation amount and the average wind speed are calculated as SR = 0 (kW · m ² ) and WS = 0 (m / s) assuming indoor work. Note that this predetermined coefficient may be set to an appropriate value according to the surrounding environment using, for example, a changeover switch or the like.

  The operation of the heat stroke risk determination unit according to the present embodiment will be described with reference to the flowchart of FIG. The heat stroke risk determination unit 310 checks whether or not the deep body temperature probe 200 has an error, and controls the alarm unit 320 to display a predetermined error if there is an error (steps S11 and S21). . Next, the heat stroke risk determination unit 310 calculates the depth body temperature based on the temperature measured by each temperature sensor of the depth body temperature probe 200 (step S12), and the calculated depth temperature is equal to or higher than a predetermined threshold (for example, 38 ° C.). In this case, the alarm unit 320 is controlled to display that the body temperature is rising (steps S13 and S14).

  Next, heat stroke risk determination unit 310 measures WBGT using WBGT measurement unit 340 (step S15). Then, the heat stroke risk determination unit 310 divides the measurement value into a plurality of predetermined bands using a plurality of threshold values, and controls the alarm unit 320 to display different risk levels in stages according to each band. . Specifically, the alarm unit is divided into less than 25 ° C, 25 ° C or more and less than 28 ° C, 28 ° C or more and less than 31 ° C, and 31 ° C or more, and performs warning display, warning display, strict warning display, and danger display respectively. 320 is controlled (steps S16 to S20).

  Thus, according to the heat stroke prevention device according to the present embodiment, since the risk of heat stroke is determined based on the wearer's deep body temperature and WBGT, it is affected by the wearer's surrounding environment and usage environment. And accurate determination can be made. Other functions and effects are the same as those of the first embodiment.

(Third embodiment)
A heat stroke prevention apparatus according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 12 is a functional block diagram of a heat stroke prevention apparatus according to the third embodiment.

  As shown in FIG. 12, the heat stroke prevention apparatus according to the present embodiment measures the amount of activity of the wearer and detects the wearer's fall, with respect to the heat stroke prevention apparatus according to the first embodiment. An acceleration sensor 350 is provided as a means for performing the above. Other components such as the configuration of the helmet 10 are the same as those in the first embodiment. Only the differences will be described here. Note that the same modification may be applied to the heat stroke prevention apparatus according to the second embodiment.

  The heat stroke risk determination unit 310 totals the accelerations detected by the acceleration sensor 350, and calculates the activity amount of the wearer in the most recent predetermined time. The heat stroke risk determination unit 310 uses various threshold values (threshold values used for comparison with the deep body temperature in the first embodiment, and WBGT in the second embodiment). (Threshold used in comparison) is corrected. Specifically, the threshold is adjusted to be smaller as the amount of activity is larger. Thereby, an appropriate alarm according to the amount of activity of the wearer can be performed.

  Heat stroke risk determination unit 310 detects the wearer's fall based on the acceleration detected by acceleration sensor 350. Various well-known algorithms can be used for the fall detection. Then, the heat stroke risk determination unit 310 controls the alarm unit 320 to perform the fall detection display when the wearer falls.

  As described above, according to the heat stroke prevention device according to the present embodiment, the risk of heat stroke is determined based on the wearer's deep body temperature, WBGT, and the amount of activity, which affects the surrounding environment and use environment of the wearer. An accurate determination can be made without being performed. Other functions and effects are the same as those in the first and second embodiments.

(Fourth embodiment)
A heat stroke prevention apparatus according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a functional block diagram of a heat stroke prevention apparatus according to the fourth embodiment.

  As shown in FIG. 13, the heat stroke prevention apparatus according to the present embodiment is a wireless unit that transmits various information to a predetermined management apparatus 500 with respect to the heat stroke prevention apparatus according to the first embodiment. A communication unit 360 is provided. Other components such as the configuration of the helmet 10 are the same as those in the first embodiment. Only the differences will be described here. Note that similar modifications may be applied to the heat stroke prevention devices according to the second and third embodiments.

  As described above, the wireless communication unit 360 transmits the alarm to a predetermined management device 500 via the network 510 when the heat stroke risk determination unit 310 controls the alarm unit 320 to issue various alarms. The wireless communication unit 360 may transmit all the alarms by the alarm unit 320 or may transmit only some alarms. In addition, when the wireless communication unit 360 transmits an alarm, the wireless communication unit 360 can transmit a measured value or a calculated value such as a deep body temperature or WBGT together. Further, the wireless communication unit 360 periodically or in response to a request from the management device 500, the measured value or calculated value such as the deep body temperature or WBGT, and the risk determined by the heat stroke risk determining unit 310, It can be transmitted to the management apparatus 500.

  The management device 500 is a device that manages one or more heat stroke prevention devices 100, and the mounting form is not limited. For example, the management apparatus 500 may be implemented on a so-called cloud server, may be implemented by a manager on a computer installed in the company's equipment, or may be a portable terminal possessed by the manager. May be. When the management apparatus 500 receives an alarm from the heat stroke prevention apparatus 100, the management apparatus 500 issues a predetermined alarm. For example, an alarm may be displayed on the computer, or a notification may be further transmitted from the management device 500 to a predetermined contact address.

  The form and communication protocol of the network 510 for connecting the heat stroke prevention apparatus 100 and the management apparatus 500 are not questioned. For example, when the wireless communication unit 360 has a communication interface with a mobile communication network, it can communicate with the management apparatus 500 via the mobile communication network. In addition, for example, when the wireless communication unit 360 has a wireless LAN interface, it is possible to communicate with the management apparatus 500 via a wireless LAN constructed at the work site.

  Thus, according to the heat stroke prevention apparatus according to the present embodiment, an alarm of the risk of heat stroke is transmitted to a predetermined management apparatus, so that the manager can manage the physical condition of the wearer. Other functions and effects are the same as those in the first to third embodiments.

(Fifth embodiment)
A heat stroke prevention apparatus according to a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 14 is a functional block diagram of a heat stroke prevention apparatus according to the fifth embodiment.

  The heat stroke prevention apparatus according to the present embodiment is obtained by dispersing and disposing each part of the heat stroke prevention apparatus according to the first embodiment. That is, as shown in FIG. 14, the heat stroke prevention apparatus 100 according to the present embodiment includes a deep body temperature probe 200, a storage unit 300 including a power supply unit 330 and a short-range wireless communication unit 370 in the helmet 10. Is provided. On the other hand, the short-range wireless communication unit 610, the power supply unit 620, the heat stroke risk determination unit 310, and the alarm unit 320 are mounted on the second device 600 different from the storage unit 300. Only the differences will be described here. In addition, you may apply the same deformation | transformation with respect to the heat stroke prevention apparatus which concerns on 2nd-4th embodiment.

  The second device 600 may be implemented with dedicated hardware or a general-purpose portable computer. As a typical example of the latter case, it is preferable to use a multi-function mobile phone called a so-called smartphone. In this case, the short-range wireless communication units 370 and 610 can use a standard communication standard such as Bluetooth (registered trademark). The alarm unit 320 can use a display or a speaker of a multi-function mobile phone. As long as the wearer carries the second device 600, the wearing position is not limited. For example, it can be attached to a waist belt.

  In addition, when this modification is applied to the second embodiment, it is preferable that the WBGT measuring unit 340 is provided in the storage unit 300. Furthermore, when this modification is applied to the third embodiment, it is preferable that the acceleration sensor 350 is disposed in the second device 600. Specifically, it is preferable to use an acceleration sensor included in the multi-function mobile phone. Furthermore, when this modification is applied to the third embodiment, it is preferable that the wireless communication unit 360 is disposed in the second device 600. Specifically, it is preferable to use the communication function of the multi-function mobile phone.

  Thus, according to the heat stroke prevention apparatus according to the present embodiment, the storage unit 300 disposed in the helmet 10 can be reduced in size, so that convenience is improved. In addition, since a general-purpose multi-function mobile phone can be used, cost can be reduced. Other functions and effects are the same as those in the first to fourth embodiments.

  Although the first to fifth embodiments of the present invention have been described in detail above, the present invention is not limited to this. For example, in the first to fifth embodiments, the case where a helmet is used as the head-mounted device has been described, but other devices may be used. For example, a hair band that is an accessory worn on the head can be used. The hair band may be a ring-shaped cloth or rubber that is stretchable, or may be a so-called headband in which a hard resin or metal is formed in a substantially C shape. The deep body temperature probe 200 is attached to the hair band so as to contact the frontal head, the forehead, the temple, and the like. In addition, when using a hair band, it is preferable to implement as a modification of the said 5th Embodiment.

  Other types of helmets, such as nursing helmets, baseball helmets, automobile helmets, motorcycle helmets, bicycle helmets, etc. that do not have hammocks or headbands inside are also used. it can. Moreover, a nursing care helmet or a medical helmet or headgear can be used. Also, Hachimaki and other general hats can be used.

DESCRIPTION OF SYMBOLS 10 ... Helmet 11 ... Cap body 12 ... Liner 13 ... Hammock 14 ... Headband 200 ... Deep body temperature probe 210 ... Insulation material 221, 222, 223, 224 ... Temperature sensor 230 ... Cover 240 ... Protrusion 250 ... Dummy protrusion 300 ... Storage unit 301 ... Charging terminal 310 ... Heat stroke risk determination unit 320 ... Alarm unit 330 ... Power supply unit 340 ... WBGT measurement unit 350 ... Acceleration sensor 360 ... Wireless communication unit 370 ... Short-range wireless communication unit 400 ... Charging device 410 ... Hook 411 ... charging terminal 500 ... management device 510 ... network 600 ... second device 610 ... short-range wireless communication unit

Claims (7)

A deep body temperature probe for measuring the deep body temperature of the wearer attached to a position inside the head wearing tool to be worn on the head of the human body and in contact with the head of the wearer;
Heat stroke risk determination means for determining the risk of the wearer suffering from heat stroke based on the depth body temperature measured by the deep body temperature probe;
A heat stroke prevention apparatus, comprising: alarm means for issuing an alarm according to the risk determined by the heat stroke risk determination means. The head wearing device comprises a cap body and a helmet having a hammock and a hair band arranged inside the cap body,
The heat stroke prevention device according to claim 1, wherein the deep body temperature probe is attached to the hair band or the hammock. The heat stroke prevention device according to claim 2, wherein the heat stroke risk determination means is provided in a storage portion disposed in a gap between the cap body and a rear portion of the cap body. Further, a secondary battery disposed in the storage unit,
The heat stroke prevention apparatus according to claim 3, further comprising: a power transmission unit that is provided in the storage unit and supplies power for charging the secondary battery from the outside. Furthermore, a WBGT measuring means is provided,
The heat stroke risk determination means determines the risk of the wearer suffering from heat stroke based on the deep body temperature measured by the deep body temperature probe and the WBGT measured by the WBGT measurement means. Item 5. The heat stroke prevention device according to any one of Items 1 to 4. Furthermore, an acceleration sensor is provided,
The heat stroke risk determination means adjusts a parameter used in a determination process of the risk of suffering from heat stroke based on a detection value of an acceleration sensor. Heat stroke prevention device. The heat stroke prevention apparatus according to claim 1, wherein the head wearing device is a hair band.

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