JP2022041043A - Hotness index monitoring device - Google Patents

Abstract

To provide a hotness index monitoring device for issuing effective warning in consideration of an individual difference or the like.SOLUTION: A hotness index monitoring device 10 includes: an index acquisition section 12 for acquiring a hotness index value; a reference storage section 13 for pre-storing a warning reference value to determine whether or not a level reaches at least one warning level; a warning determination section 32 for determining whether or not the acquired hotness index value reaches the warning reference value; an average acquisition section 18 for acquiring an average value of a predetermined range from the plurality of hotness index values acquired by the index acquisition section 12; a degree determination section 34 for determining a degree of warning information based on comparison between the acquired hotness index value and the average value; and a result output section 40 for outputting the warning information in response to a determination result by the warning determination section 32 and a determination result by the degree determination section 34.SELECTED DRAWING: Figure 1

Description

The present invention relates to a heat index monitoring device.

The heat index (WBGT, Wet Bulb Globe Temperature, wet-bulb globe temperature) is an index defined for the purpose of preventing heat stroke (see, for example, Patent Document 1). The environment prone to heat stroke is not only a high temperature situation, but also a high humidity in many cases. Therefore, as a numerical value for predicting the risk of heat stroke, it is effective to consider factors that affect other than the temperature. Therefore, the heat index is internationally defined as an index calculated by taking into account not only the temperature but also the humidity and radiant heat, and the unit is degrees Celsius (° C). Even if the temperature is the same, the heat index will be different if the humidity is different. The heat index is recognized as effective as a guideline for the working environment and exercise environment, and is internationally standardized by ISO and the like.

In the guidelines for daily life, "Caution" when the heat index is 21 ° C or higher and lower than 25 ° C, "Caution" when the heat index is 25 ° C or higher and lower than 28 ° C, and "Strict caution" when the heat index is 28 ° C or higher and lower than 31 ° C. It is considered "dangerous" above 31 ° C. In the exercise guidelines, if the heat index is less than 21 ° C, it is "almost safe (appropriate hydration)", if it is 21 ° C or higher and less than 25 ° C, it is "caution (active hydration)", 25 ° C or higher, less than 28 ° C. Within the range of "warning (active break)", "strict caution (stop vigorous exercise)" at 28 ° C or higher and below 31 ° C, and "dangerous (exercise is stopped in principle)" at 31 ° C or higher.

Japanese Unexamined Patent Publication No. 2020-082008

In recent years, the Ministry of the Environment, the Japan Meteorological Agency, the Japan Sports Association, etc. have taken the lead in taking measures to prevent heat stroke based on the heat index, but heat tolerance varies greatly depending on the age and region, so it is uniform. It is assumed that the criteria of are not always effective.

The present invention has been made in view of such a situation, and an object of the present invention is to provide a heat index monitoring device for issuing a more effective alarm in consideration of individual differences and the like.

In order to solve the above problems, the heat index monitoring device according to an embodiment of the present invention includes at least one, an index acquisition unit for acquiring a heat index value and an acquisition value storage unit for storing a history of heat index values. A reference storage unit that stores in advance an alarm reference value for determining whether or not one alarm level has been reached, and whether or not the current heat index value acquired by the acquisition value storage unit has reached the alarm reference value. The warning judgment unit that determines the lightness of the alarm by comparing the current heat index value acquired by the acquisition value storage unit and the history stored in the acquisition value storage unit, and the warning determination unit. It is provided with a result output unit that outputs alarm information according to the determination result by the light / weight determination unit and the determination result by the light / heavy determination unit.

Here, the "predetermined range" may indicate the heat index value at the same time for a preset number of days among the heat index values for a plurality of times, and the values are averaged to a specific time. The average heat index in the band may be calculated. The number of days of "the number of days" referred to here and the number of times of the above "multiple times" may be a fixed value or a variable value. The result output unit may output alarm information according to the judgment result by the alarm judgment unit and light weight information according to the judgment result by the light weight judgment unit, respectively, or the judgment result by the alarm judgment unit and the judgment result by the light weight judgment unit. Alarm information may be output according to the combination with.

According to this aspect, not only can an appropriate alarm be output according to the current heat index, but also the degree of alertness can be further subdivided by further determining and outputting the lightness of the alarm even at the same alarm level. can.

An average acquisition unit that acquires an average value in a predetermined range from a plurality of heat index values stored as a history in the acquisition value storage unit may be further provided. The light weight determination unit may determine the light weight of the alarm based on the comparison between the acquired heat index value and the average value.

An average setting unit for setting a range of days for which the average value is to be calculated may be further provided. The average acquisition unit may obtain an average value from the heat index values acquired in the same time zone within the range of the number of days set by the average setting unit.

The average setting unit sets a relatively short first number of days as a range for calculating the average value as a setting for a target person with high heat tolerance or a target area with high heat tolerance, and the heat tolerance is set. A relatively long second number of days may be set as a range for calculating the average value as a setting for a low target person or a target area with low heat tolerance.

The light weight determination unit responds to the difference between the current heat index value and the past heat index value acquired at a predetermined date and time among the heat index values stored as history in the acquired value storage unit. The lightness of the alarm may be determined.

A comparison setting unit for setting a target selection criterion for the past heat index value to be compared with the current heat index value may be further provided. The comparison setting unit is a target selection criterion that compares the heat index value of the past date and time with a relatively small time difference from the present as a setting for a target person with high heat tolerance or a target area with high heat tolerance. As a setting for subjects with low heat tolerance or target areas with low heat tolerance, the target selection criteria for comparing the heat index values of the past date and time with a relatively large time difference from the present It may be set.

A reference value setting unit for setting a light weight reference value for determining light weight may be further provided. The light weight determination unit warns whether the difference between the current heat index value and the heat index value obtained in the comparison based on the history stored in the acquired value storage unit reaches at least one light weight reference value. You may judge the lightness and weight of.

The reference value setting unit sets a relatively large value as a light and heavy reference value as a setting for a target person with high heat tolerance or a target area with high heat tolerance, and for a target person with low heat tolerance or heat. A relatively small value may be set as a light weight reference value as a setting for a target area with low tolerance.

According to the present invention, it is possible to provide a heat index monitoring device for issuing a more effective alarm in consideration of individual differences and the like.

It is a functional block diagram which shows each configuration of a heat index monitoring device. It is a figure which shows the correspondence table of a heat index and an alarm content. It is a flowchart which shows the operation process of a heat index monitoring device. It is a flowchart which shows the detailed processing process in S20 of FIG.

FIG. 1 is a functional block diagram showing each configuration of the heat index monitoring device. The heat index monitoring device 10 acquires the value of the heat index from the heat index sensor 20, and outputs the alarm information as a predetermined determination result to the output device 50. The heat index monitoring device 10 determines the lightness and weight of the alarm, and further outputs the lightness and weight information of the alarm to the output device 50 as the determination result. Each block of the heat index monitoring device 10 can be realized by an element such as a PLC (Programmable Logic Controller) or an integrated circuit in terms of hardware, and can be realized by a computer program or the like that controls the PLC in terms of software. However, here, the functional blocks realized by their cooperation are drawn. Therefore, it is understood by those skilled in the art who have touched this specification that these functional blocks can be realized in various forms by combining hardware and software.

It is considered that the heat index monitoring device 10 determines and outputs the lightness / weight information of the warning because the weight of the warning differs depending on the age group, attributes, climate, etc. of the subject even in the situation where the same warning level is issued. This is because it is intended to output more meaningful alarms in consideration of individual differences and regional differences. For example, in areas where heat tolerance is relatively low, such as cold regions and cold regions, even a slight increase in the heat index value has a large effect, whereas heat tolerance such as warm regions and warm regions has a large effect. In areas where is relatively high, even a slight increase in the heat index value is considered to have little effect. In addition, in situations such as installation in nursing care facilities for the elderly, where the amount of sweating is small and the heat tolerance is low on a daily basis, even a slight change in the heat index value has a relatively high warning weight. In situations such as installation in sports facilities, where athletes who play sports on a daily basis and have high sweating and heat tolerance are targeted, the weight of the warning is relative to a slight change in the heat index value. Low. In the present embodiment, the lightness and weight of such an alarm can be determined by the following three determination criteria, and the lightness and weight information can be output separately. 1) In the first criterion, the light weight level is determined according to the magnitude of the difference from the current heat index value by comparing with the average of the heat index values at the same time in the predetermined number of days up to the previous day. At this time, the number of days for which the average value is calculated is reduced as the target is for people and regions with high heat tolerance, and the number of days for which the average value is calculated is targeted for people and regions with low heat tolerance. By increasing the number, the degree of familiarity with the heat is measured by a standard suitable for the target person and the target area. 2) In the second judgment criterion, the light weight level is judged according to the magnitude of the difference from the current heat index value by comparing with the heat index value at the same time on the previous day. 3) In the third criterion, the past heat index value before a predetermined time and the current heat index value are compared, and the light weight level is determined according to the magnitude of the difference. At this time, compared with the past heat index value that is shorter than the present time for people and regions with high heat tolerance, it is longer time before the present for people and regions with low heat tolerance. By comparing with the past heat index value of, it is measured by the standard according to the ability to adapt to the heat change of each target person and target area. In addition, a supplementary alert is given to predict the heat index value after a predetermined time from the difference between the average of the heat index values at the same time and the average of the heat index values after a predetermined time in the predetermined number of days up to the previous day. do.

The heat index sensor 20 is a device that measures the wet-bulb temperature, the black-bulb temperature, and the dry-bulb temperature, and calculates the heat index (WGBT value) based on these values. The heat index is a value defined by ISO or the like as a value used as an index for heat stroke prevention. The heat index sensor 20 includes, for example, a wet-bulb temperature sensor, a black-ball temperature sensor, and a dry-bulb temperature sensor, and measures the wet-bulb temperature, the black-ball temperature, and the dry-bulb temperature according to the values detected by these sensors. For example, "wet-bulb temperature x 0.7 + black-bulb temperature x 0.2 + dry-bulb temperature x 0.1" is used as the calculation formula for obtaining the value of the heat index. However, as a modification, as a sensor for indoor use or shade without sunlight, a sensor using the calculation formula of "wet-bulb temperature x 0.7 + black ball temperature x 0.3" may be used. The heat index sensor 20 transmits the value of the heat index to the heat index monitoring device 10 via wireless communication. As a modification, the heat index sensor 20 may transmit the heat index value to the heat index monitoring device 10 via wired communication or an electric wire. Further, the heat index sensor 20 may transmit values such as wet-bulb temperature, black-bulb temperature, dry-bulb temperature, and relative humidity, and these values are calculated on the side of the heat index monitoring device 10 to generate heat. The value of the index may be calculated. Alternatively, the heat index monitoring device 10 may be configured to include the heat index sensor 20.

The heat index monitoring device 10 includes an index acquisition unit 12, a reference storage unit 13, an acquisition value storage unit 16, an average acquisition unit 18, a setting unit 19, a determination unit 30, and a result output unit 40. The setting unit 19 includes an average setting unit 81, a reference value setting unit 82, and a comparison setting unit 83, and sets various setting values according to an input operation of a user or an appropriate administrator. The index acquisition unit 12 periodically acquires the heat index value from the heat index sensor 20. The index acquisition unit 12 acquires the current heat index value every 10 minutes, for example, and stores it in the acquisition value storage unit 16 together with the acquisition date and time information. Even if the index acquisition unit 12 in the modified example acquires the wet-bulb temperature or relative humidity, the black-bulb temperature, and the dry-bulb temperature from the heat index sensor 20 every 10 minutes, and obtains the value of the heat index by calculation. good.

The acquisition value storage unit 16 stores the heat index value acquired by the index acquisition unit 12 every 10 minutes together with the information on the acquisition date and time. The acquired value storage unit 16 is a non-volatile memory such as a flash memory capable of storing data, and has a capacity of storing a heat index value for at least a predetermined number of days. The "predetermined number of days" referred to here is, for example, 7 days, and the data after which the "predetermined number of days" has elapsed may be deleted or overwritten with other data.

The average acquisition unit 18 sets the average value in a predetermined range from the heat index values of a plurality of times acquired by the index acquisition unit 12 and stored in the acquisition value storage unit 16 as the value used for the first determination criterion described above. get. The predetermined range here indicates the range for the number of days set by the average setting unit 81, and among the heat index values acquired in this range, the average of the heat index values at the same time as the current time is calculated. .. Since the acquisition time of the heat index value is every 10 minutes, the nearest heat index value before or after the same time as the current time is the target for calculating the average value. The average setting unit 81 sets the range for which the average value is calculated, that is, the number of days, according to the input operation of the user or the appropriate administrator of the heat index monitoring device 10. The number of days within the range of the average value calculation target set in the average setting unit 81 indicates, for example, the number of days including the previous day not including today (the number of days before the previous day). For example, when the setting by the average setting unit 81 is set to "2 days", the average value of the heat index values at the same time for a total of 2 days the day before and the day before is calculated and set to "7 days". , The average value of the heat index values at the same time for a total of 7 days including the past 7 days up to the previous day is calculated. When the setting by the average setting unit 81 is set to "1 day", the heat index value at the same time only on the previous day may be compared with the current heat index value, and this method is practically used. It may correspond to the above-mentioned second criterion.

However, as a modification, the number of days including today (the number of days before today) may be set. In that case, for example, when the setting by the average setting unit 81 is set to "2 days", the average value of the heat index values at the same time for a total of 2 days of today and the previous day is calculated and set to "7 days". In this case, the average value of the heat index values at the same time for a total of 7 days including the past 6 days up to today and the previous day is calculated.

The average number of days targeted for the average value, for example, "2 days", is set in the average setting unit 81 for a person who plays sports on a daily basis, sweats a lot, and has a high heat tolerance. The average number of days targeted for the average value, for example, "5 to 7 days", is set in the average setting unit 81 for people who sweat less and have lower heat tolerance on a daily basis, such as the elderly. For children, junior high and high school students, adults, etc. who do not sweat as much as athletes but have higher heat tolerance than the elderly, set an intermediate value, for example, "3-4 days" as the target number of days for the average value in the average setting unit 81. do. Furthermore, a smaller number of days may be set as the target number of days for the average value for people with high heat tolerance such as people in warm regions and warm regions, and the average value for people with low heat tolerance such as people in cold regions and cold regions. You may set a larger number of days as the target number of days.

The average setting unit 81 selects one from seven types, for example, "1 day", "2 days", "3 days", "4 days", "5 days", "6 days", and "7 days", and the target number of days for the average value. It may be a switch that can be set. Alternatively, the setting unit 19 including the average setting unit 81 is composed of, for example, a switch for turning on / off the "sports mode", a switch for turning on / off the "elderly mode", and a switch for switching "warm / intermediate / cold". The target number of days of the average value may be set by the average setting unit 81 according to the combination of the switch states of. As a modification, when the heat index monitoring device 10 is realized as a personally owned device, it is configured so that the user's attribute can be set, and then the "elderly mode" is based on the user's attribute, especially the age setting. It may be determined whether or not it corresponds to. In addition, even if it is equipped with a configuration that can acquire position information from a satellite positioning system such as GPS (Global Positioning System), it is possible to determine switching between "warm area / intermediate area / cold area" based on the position information. good.

The reference storage unit 13 includes an alarm reference storage unit 14 and a light / heavy reference storage unit 15. The alarm reference storage unit 14 stores in advance an alarm reference value for determining whether or not at least one alarm level has been reached. The warning standard storage unit 14 in the present embodiment stores the values of the heat index indicating the warning level of "attention", the warning level of "warning", the warning level of "strict warning", and the warning level of "danger", respectively. .. In the present embodiment, the light weight reference storage unit 15 stores three light weight reference values as reference values for the heat index value for further finely determining the light weight for one alarm level. As a result, even if the alarm level is the same, it can be classified according to different weights, and the degree of alertness can be further subdivided.

In the present embodiment, a value obtained by dividing the range of the heat index value corresponding to one alarm level into, for example, four equal parts is set in the light weight reference storage unit 15 as a light weight reference value, and which light weight level belongs to is determined. Since the range of the heat index value corresponding to one alarm level is 3 ° C, it is 0.75 ° C, 1.5 ° C, 2.25 in order to divide it into 0.75 ° C, which is 1/4 of the range. The light weight standard value is ℃. For example, when the current heat index value is 2.25 ° C higher than the past average value by 0.75 ° C, the heat index rises sharply, that is, the burden on the body due to the heat is greater. It can be determined and determined to be "severe" even at the same alarm level. In this way, the larger the difference between the current heat index value and the average value up to the previous day, the heavier the degree of lightness and the warning can be issued even at the same warning level.

FIG. 2 shows a correspondence table between the heat index and the alarm contents. In the correspondence table 60, the alarm level column 62 indicates the content of each alarm level. The heat index column 64 indicates a heat index value that serves as an alarm reference value for determining whether or not each alarm level has been reached. The light weight reference value column 70 indicates a light weight reference value set for each alarm level. The light weight level column 72 indicates a light weight level determined by a light weight reference value set for each alarm level.

As each alarm level shown in the alarm level column 62, a danger level 74, a strict alert level 75, an alert level 76, an attention level 77, and a safety level 78 are defined. Each warning level is based on the Japanese Society of Biometeorology's "Guidelines for Preventing Heat Stroke in Daily Life", the Japan Sports Association "Guidelines for Preventing Heat Stroke", and JIS Z8504 "WBGT (Wet-bulb Globe Temperature) Index". Based on the classification specified in "Evaluation-Hot environment".

The danger level 74 is based on the fact that the heat index reaches 31 ° C. or higher, and a value indicating a lower limit value “31 ° C.” is stored in the warning reference storage unit 14 as the warning reference value of the danger level 74. The upper limit value may not be stored as the alarm reference value of the danger level 74, or a sufficiently large value such as "80 ° C." may be stored as the upper limit value. For the danger level 74, "avoid going out as much as possible and move to a cool room" is recommended as a guideline for daily life, and "exercise should be stopped in principle" as a guideline for exercise. For example, when the temperature reaches 35 ° C or higher, the heat index often reaches 31 ° C or higher. In addition, as the lightness of the danger level 74, if the difference from the average value at the same time in the past several days is 2.25 ° C or higher, it is "severe", and if it is 1.5 ° C or higher, it is "moderate", 0.75. If the temperature is above ℃, it is considered "mild".

Strict alert level 75 is based on the fact that the heat index is 28 ° C or higher and less than 31 ° C. As the warning standard values for severe alert level 75, for example, the lower limit value "28 ° C" and the upper limit value "30.9 ° C" Is stored in the alarm reference storage unit 14. As for the strict caution level 75, "Avoid the hot sun when going out and be careful of the rise in room temperature indoors" is recommended as a guideline for daily life, and "Stop strenuous exercise" is recommended as a guideline for exercise. For example, when the temperature reaches 31 ° C or higher, the heat index often reaches 28 ° C or higher. In addition, as a light and heavy alert level 75, if the difference from the average value at the same time in the past several days is 2.25 ° C or higher, it is "severe", and if it is 1.5 ° C or higher, it is "moderate". If the temperature is 75 ° C or higher, it is considered "mild".

The warning level 76 is based on the fact that the heat index is 25 ° C or higher and lower than 28 ° C. As the warning reference value of the warning level 76, for example, the lower limit value “25 ° C” and the upper limit value “27.9 ° C” are set. The indicated value is stored in the alarm reference storage unit 14. At alert level 76, "take sufficient rest on a regular basis when exercising or doing intense work" is recommended as a guideline for daily life, and "active break" is recommended as a guideline for exercise. For example, when the temperature reaches 28 ° C or higher, the heat index often reaches 25 ° C or higher. In addition, as a light weight of alert level 76, if the difference from the average value at the same time in the past several days is 2.25 ° C or higher, it is "severe", and if it is 1.5 ° C or higher, it is "moderate", 0.75. If the temperature is above ℃, it is considered "mild".

The caution level 77 is based on the fact that the heat index is 21 ° C or higher and lower than 25 ° C. As the warning reference values for the caution level 77, for example, a lower limit value “21 ° C” and an upper limit value “24.9 ° C” are used. The indicated value is stored in the alarm reference storage unit 14. Attention level 77 is recommended to be "generally less dangerous but be careful during strenuous exercise or hard work" as a guideline for daily life, and "actively hydrate" as a guideline for exercise. For example, when the temperature reaches 24 ° C or higher, the heat index often reaches 21 ° C or higher. In addition, as a light weight of caution level 77, if the difference from the average value at the same time in the past several days is 2.25 ° C or higher, it is "severe", and if it is 1.5 ° C or higher, it is "moderate", 0.75. If the temperature is above ℃, it is considered "mild".

The safety level 78 is based on the fact that the heat index is less than 21 ° C., and the warning reference value of the safety level 78 is not particularly stored in the warning reference storage unit 14, and is a safety level when it does not correspond to another warning level. It may be determined to be 78. For example, when the temperature is less than 24 ° C, the heat index is often less than 21 ° C.

Returning to FIG. 1, the light / heavy reference storage unit 15 has, for example, "2.25" as the light / heavy reference value for determining "severe", "1.5" as the light / heavy reference value for determining "moderate", and "mild". "0.75" is set as a light weight reference value for determining. The reference value setting unit 82 is a switch that sets the light weight reference value corresponding to each light weight level in the light weight reference storage unit 15 according to an input operation of the user or an appropriate administrator. In the above example, the value obtained by evenly dividing "3 ° C", which is the difference between the alarm levels and the heat index value, into four equal parts is set as the light weight reference value, but the value unevenly divided into four is used as the light weight reference value. It may be set as a value. For people and regions with high heat tolerance, for example, "severe" is "2.5", "moderate" is "2.0", and "mild" is "mild" so that the light and heavy standard values are higher. By setting a value such as "1.5", it is possible to prevent the light weight level from becoming heavy unless the difference between the heat index values is larger. On the contrary, for people and regions with low heat tolerance, for example, "severe" is "1.5", "moderate" is "1.0", and "mild" so that the light and heavy standard values are lower. By setting a value such as "0.5", the light weight level can be made heavy even if the difference in the heat index value is not so large. The setting unit 19 including the reference value setting unit 82 is composed of, for example, a switch for turning on / off the "sports mode", a switch for turning on / off the "elderly mode", and a switch for switching "warm / intermediate / cold". The light weight reference value may be set by the reference value setting unit 82 according to the combination of switch states.

The determination unit 30 includes an alarm determination unit 32 and a light / heavy determination unit 34, and determines the presence / absence of an alarm output and the content of the alarm. The alarm determination unit 32 determines whether or not the acquired current time or the value of the latest heat index has reached any of the alarm reference values stored in the alarm reference storage unit 14. For example, if the heat index value is 31 ° C or higher, it is determined that the danger level 74 has been reached, and if the heat index value is 28 ° C or higher and lower than 31 ° C, the strict caution level 75 has been reached. judge. If the heat index value is 25 ° C or higher and lower than 28 ° C, it is determined that the alert level 76 has been reached, and if the heat index value is 21 ° C or higher and lower than 25 ° C, the caution level 77 has been reached. Is determined. In cases other than these, that is, when the heat index value is less than 21 ° C., it is determined to be a safety level 78.

As the first determination criterion, the light weight determination unit 34 is based on a comparison between the acquired heat index value at the current time and the average value acquired by the average acquisition unit 18 at the same time for the past several days. Judge the lightness of the alarm information according to the value. For example, if the heat index value at the current time is higher than the average value at the same time for the past several days and the difference between them is 2.25 ° C or more, it is judged as "severe" and 1.5 ° C or more. If it is less than 2.25 ° C, it is determined to be "moderate", and if it is 0.75 ° C or higher and lower than 1.5 ° C, it is determined to be "mild". Even if the heat index value at the current time is higher than the average value at the same time for the past several days, if the difference between them is less than 0.75 ° C, no particular judgment regarding lightness or weight is made, and the current time Even if the heat index value is lower or the same as the average value at the same time for the past several days, no particular judgment regarding lightness or weight is made.

In the modified example, if the heat index value at the current time is higher than the average value at the same time for the past several days and the difference between them is 2.25 ° C. or more, it is determined to be "most severe" and 1 If it is 0.5 ° C or higher and lower than 2.25 ° C, it is judged as "severe", if it is 0.75 ° C or higher and lower than 1.5 ° C, it is judged as "moderate", and if it is lower than 0.75 ° C, it is judged as "moderate". It may be determined as "mild". In that case, even if the heat index value at the current time is lower or the same as the average value at the same time for the past several days, it may be determined to be "mild".

In another modification, a value obtained by dividing the range of the heat index value corresponding to one alarm level into three equal parts is set as the light weight reference value in the light weight reference storage unit 15, and it is determined which light weight level it belongs to. May be good. For example, since the range of the heat index value corresponding to one alarm level is 3 ° C, it is divided into 1/3 of that, 1 ° C, and "1 ° C" and "2 ° C" are used as light and heavy reference values. It may be stored in the light / heavy reference storage unit 15. In that case, if the heat index value at the current time is higher than the average value at the same time for the past several days and the difference between them is 2 ° C or more, it is judged as "severe" and the difference is 1 ° C or more. If it is less than 2 ° C., it may be determined to be "moderate", and if the difference is less than 1 ° C. or the heat index value at the current time is equal to or less than the past average value, it may be determined to be "mild".

In yet another modification, the light weight reference value different for each alarm level may be stored in the light weight reference storage unit 15, or the light weight reference may be divided into five or more fine light weights, which is more than 3 to 4 steps. The value may be stored and determined. Alternatively, the light / weight determination unit 34 may dynamically use different light / weight reference values according to the number of target days of the average value in order to set the light / weight reference values according to individual differences and regional differences.

As the second determination criterion, the light / heavy determination unit 34 compares the heat index value at the current time acquired by the index acquisition unit 12 with the heat index value at the same time on the previous day stored in the acquisition value storage unit 16. Then, when the current heat index exceeds the heat index of the previous day, the weight of the warning information is determined according to which light weight reference value these differences reach. The light weight reference value used for the second determination criterion is the same as the light weight reference value used for the first determination criterion.

As a third determination criterion, the light / heavy determination unit 34 compares the heat index value at the current time acquired by the index acquisition unit 12 with the heat index value stored in the acquisition value storage unit 16 before a predetermined time. , When the current heat index exceeds the heat index before a predetermined time, the weight of the warning information is determined according to which light weight reference value these differences reach. The light weight reference value used for the third determination standard is the same as the light weight reference value used for the first and second determination criteria. Here, how much time ago the heat index value is compared is set by the comparison setting unit 83. The comparison setting unit 83 selects one from three types, for example, "20 minutes ago", "30 minutes ago", and "60 minutes ago", and sets a target selection criterion for the past heat index value to be compared. It may be a switch to obtain. Alternatively, the setting unit 19 including the comparison setting unit 83 is composed of, for example, a switch for turning on / off the "sports mode", a switch for turning on / off the "elderly mode", and a switch for switching "warm / intermediate / cold". The target selection criterion of the past heat index value to be compared may be set by the comparison setting unit 83 according to the combination of the switch states of. For people and regions with high heat tolerance, set a value indicating a short time ago, for example, "20 minutes ago" so as to compare with the past heat index value shorter than the present time. For people and regions with low heat tolerance, set a value indicating a long time ago, for example, "60 minutes ago" so as to compare with the past heat index value longer than the present time. As a result, for people with high heat tolerance, the temperature rose by 3 ° C in a short time of 20 minutes, so it was regarded as a rapid rise and judged to be "severe". The lightness of the alarm can be determined based on the criteria according to the adaptability. If a value indicating a long time ago such as "one day ago" is set, it will be compared with the heat index value at the same time on the previous day, and the light weight judgment will be substantially based on the second judgment criterion.

In the modified example, instead of comparing with the heat index value before the predetermined time set by the comparison setting unit 83, the average value of the heat index value before the predetermined time and the heat index value before and after the predetermined time is calculated. It may be compared with the average value. In this case, since it is the "mean value in a predetermined range", it can be said that it substantially corresponds to the light weight judgment based on the first judgment criterion. The average value here is a moving average value, and when the predetermined time before the predetermined time set by the comparison setting unit 83 is, for example, "60 minutes before", the "60 minutes before" including the front and back is included. The average value of the odd-numbered (for example, 3 times) heat index values of "70 minutes ago", "60 minutes ago", and "50 minutes ago" is calculated and compared with the current heat index value. Here, the average value for three times at 10-minute intervals was calculated, but one of a plurality of types of time intervals (for example, "10-minute intervals", "20-minute intervals", and "30-minute intervals") was calculated by the comparison setting unit 83. May be selected and set. For example, when "20-minute interval" is set, the average value for three times of "80 minutes ago", "60 minutes ago", and "40 minutes ago" is calculated. When such a moving average value is not used, for example, when a short-time heavy rain occurs "60 minutes ago" and the temperature drops temporarily, the difference from the current heat index value is also temporary. There is a possibility that the judgment of lightness and weight will be unnaturally heavy. However, if the moving average value is used, the temporary error is smoothed by the average of the acquired values before and after, and the error becomes small, so that it is easy to avoid an unnatural determination.

The light weight determination unit 34 separately determines the light weight of the warning based on each of the first to third determination criteria. Therefore, there is a possibility that there are three types of determination results by the light / weight determination unit 34, and they do not always match each other. In the modified example, the specification may be such that only one or two of the first to third determination criteria are adopted. The light weight determination unit 34 further executes a prediction regarding the heat index after a predetermined time. Based on the difference between the average value of the heat index value at the same time for the past several days referred to in the first criterion and the average value of the heat index value after a predetermined time has elapsed from the same time for each of the past several days. Then, the heat index value after a predetermined time has elapsed from the current time is predicted. For example, if the average value after a predetermined time has elapsed (for example, 30 minutes later) is higher than the average value at the same time for the past several days, the prediction result of "rising prediction" is determined after the predetermined time has elapsed from the current time. do. In addition, depending on whether the difference between the average value at the same time for the past several days and the average value after a predetermined time exceeds any of the predetermined reference values, "large increase prediction", "medium increase prediction", and "small increase" Judge one of the "prediction". On the contrary, when the average value after the lapse of the predetermined time is lower than the average value at the same time for the past several days, the prediction result of "downward prediction" is determined after the lapse of the predetermined time from the current time. In addition, depending on whether the difference between the average value at the same time for the past several days and the average value after a predetermined time is less than any of the predetermined reference values, "large descent prediction", "medium descent prediction", and "small descent" Judge one of the "prediction". The value of "after a predetermined time" here is set by the average setting unit 81 from a plurality of types of values such as "30 minutes later", "1 hour later", and "2 hours later", and has been set for the past several days. The average value of the heat index value after the lapse of a predetermined time is calculated by the average acquisition unit 18.

The result output unit 40 includes an alarm output unit 42 and a light / heavy output unit 44, and outputs alarm information according to a determination result by the alarm determination unit 32 and a determination result by the light / heavy determination unit 34. The alarm output unit 42 outputs alarm information indicating the alarm level when any of the danger level 74, the strict caution level 75, the caution level 76, and the caution level 77 is applicable as the determination result by the alarm determination unit 32. Output to 50. When it corresponds to the safety level 78, the alarm information is not particularly output, but as a modification, the alarm information indicating that the safety level 78 may be output.

As a determination result by the light / heavy determination unit 34, the light / heavy output unit 44 outputs light / heavy information indicating the light / heavy level to the output device 50 when the light / heavy level corresponds to any of severe, medium, and light. The light / heavy output unit 44 may output one or a plurality of light / heavy information as a result of the determination by the first to third determination criteria, and in that case, which of the determination criteria is the light / heavy information. Light and heavy information is output along with the indicated information. If the light / heavy determination unit 34 determines based on a plurality of determination criteria and the respective determination results do not match, the light / heavy output unit 44 may preferentially output the heaviest determination result. Based on the above, five warning levels of danger level 74, strict warning level 75, warning level 76, caution level 77, and safety level 78 are determined, and severe and medium for one warning level other than safety level 78. Four levels of light and heavy are determined: degree, mild, and no light and heavy. As a result, it is possible to output a heat stroke prediction alarm in substantially 4 × 4 = 16 stages by combining the alarm level and the light / heavy level. Specifically, as heat stroke prediction warnings, 1) severe danger warning, 2) moderate danger warning, 3) mild danger warning, 4) danger warning, 5) severe strict warning warning, 6) moderate strict warning warning, 7) Mild Severe Alert, 8) Strict Alert, 9) Severe Alert, 10) Medium Alert, 11) Mild Alert, 12) Alert, 13) Severe Alert, 14) Medium Alert, 15) Mild caution alarm and 16) Caution alarm can be output. The light / heavy output unit 44 may further output any one of "large ascent prediction", "medium ascent prediction", "small ascent prediction", "large descent prediction", "medium descent prediction", and "small descent prediction".

The result output unit 40 transmits the alarm information and the light weight information to the output device 50 connected by wireless communication. In the modified example, the result output unit 40 may transmit alarm information and light weight information to the output device 50 connected by wire communication or electric wire. The result output unit 40 may further have a function of storing the output alarm information and light / heavy information history in a non-volatile memory or a detachable memory card. The result output unit 40 may further have a function of storing the acquired heat index value and temperature history in a non-volatile memory or a removable memory card.

The output device 50 includes a display device 52, a speaker 54, and an indicator light 56. The output device 50 of the present embodiment describes an example including a combination of the display device 52, the speaker 54, and the indicator light 56, but the output device 50 in the modified example is any one of the display device 52, the speaker 54, and the indicator light 56. The configuration may include only one or two, or may further include a device that outputs alarm information and light weight information according to other different embodiments. The output device 50 of the present embodiment will be described as a device connected to the outside of the heat index monitoring device 10, but as a modification, the output device 50 may be configured to be built in the heat index monitoring device 10.

The display device 52 replaces the alarm information and the light weight information received from the result output unit 40 in the form of characters or images and displays them on the screen. The display device 52 may display, for example, in the form of a combination of alarm information and light / heavy information in the form of character strings such as "severe danger warning", "moderately severe warning warning", and "mild caution warning", or may display "danger warning" and "caution". Warning information such as "alarm" and light and heavy information such as "severe" and "mild" may be displayed separately as character strings. Further, these character strings may be displayed in green, yellow, orange, or red from the lower level to the upper level depending on the alarm level. In addition, a character string, a color, a symbol, or the like may be used to indicate which of the first to third determination criteria the light weight information is based on. For example, "severity higher than average" according to the first criterion, "severe higher than yesterday" according to the second criterion, "severe rise from 20 minutes ago" according to the third criterion, etc. A character string may indicate which criterion is used.

The display device 52 may display a message according to the alarm level. For example, in the case of danger level 74, "Please stop exercising" is displayed, and in the case of high alert level 75, "Actively replenish water and salt and take a break" is displayed. Attention level 77 may be displayed as "Be careful of heat stroke".

The display device 52 may express the content of the light weight information as the light weight information by an aspect other than the character string. For example, the character string of the warning information is blinked at the speed according to the light weight level of the light weight information, the character string of the warning information is displayed in the color corresponding to the light weight level of the light weight information, and the light weight level of the light weight information is indicated. Symbols and images may be added to the alarm information and displayed. The display device 52 may further display the prediction after the lapse of a predetermined time. For example, character strings such as "large rise prediction", "medium rise prediction", "small rise prediction", "large descent prediction", "medium descent prediction", and "small descent prediction" may be displayed, or "rise prediction" and "downward prediction" may be displayed. Is represented by an upward or downward arrow mark such as "↑" or "↓", and the degree is indicated by the number of arrow marks (for example, "Large rise prediction" is "↑↑↑" and "Large fall prediction" is "↓↓↓". ") May be expressed.

The speaker 54 may output a voice having contents according to the alarm level, for example, a voice reading out the contents of the alarm level or a message, or an alarm sound having a different tone color or volume depending on the alarm level. The indicator lamp 56 emits light with a light emitting color, a blinking speed, and a light emitting intensity according to the alarm level. The light emission color, blinking speed, lighting mode, etc. of the indicator lamp 56 may indicate which of the first to third determination criteria is used for light and heavy information.

The alarm information and light weight information output by the result output unit 40 may be transmitted to the output device 50 or may be transmitted to another device via wireless communication or the like. For example, an e-mail or a message indicating alarm information and light weight information may be transmitted to a predetermined destination via a predetermined server, or alarm information and light weight information may be transmitted to a predetermined air conditioning control system.

FIG. 3 is a flowchart showing the operation process of the heat index monitoring device 10. First, when 10 minutes or more have passed since the previous heat index acquisition timing (Y in S10), the index acquisition unit 12 acquires the heat index value (S12), and the acquired heat index value is acquired. Is stored in the acquired value storage unit 16 together with the information of (S14). If 10 minutes or more have not passed since the previous heat index acquisition timing, the determination of S10 is repeated until 10 minutes or more have passed from the previous heat index acquisition timing (N of S10).

When the alarm determination unit 32 refers to the alarm reference values of a plurality of alarm levels from the upper level and determines that the current heat index value is equal to or higher than the alarm reference value of any of the alarm levels (Y in S16), the determination is made. The alarm output unit 42 outputs the alarm information of the alarm level corresponding to the result (S18). If the current heat index value is not equal to or higher than the warning reference value of any warning level (N in S16), the process returns to S10. Subsequently, the light weight determination process described in detail in the next figure is executed (S20), and the output device 50 that has received the alarm information and the light weight information from the result output unit 40 displays the alarm and light weight information on the screen. Is executed (S30), and the process returns to S10. In the flowchart of this figure, an example in which the processes of S16 to S18 and the processes of S20 are executed in a serial order has been described, but these may be executed in parallel.

FIG. 4 is a flowchart showing a detailed processing process in S20 of FIG. First, as a light / heavy judgment based on the first judgment criterion, information on the number of days to be averaged set by the average setting unit 81 is acquired (S30), and the average value of the heat index at the same time for the number of days is acquired (S30). S32). When the current heat index exceeds the average value (Y in S34), the difference between the current heat index and the average value is greater than or equal to one of the light weight reference values referred to from the top of the plurality of light weight reference values. When the light weight determination unit 34 determines (Y in S36), the light weight output unit 44 outputs the first light weight information corresponding to the determination result (S38). If the current heat index does not exceed the average value, skip S36 and S38 (N in S34), and if the difference between the current heat index and the average value is not greater than or equal to any of the light weight reference values, skip S38. (N of S36).

Next, as a light / heavy judgment based on the second judgment criterion, the heat index at the same time on the previous day is acquired (S40), and the current heat index exceeds the heat index on the previous day (Y in S42). , When the light weight determination unit 34 determines that the difference between the current and the previous day's heat index is equal to or greater than one of the light weight reference values by referring from the top of the plurality of light weight reference values (Y in S44), the determination result. The light weight output unit 44 outputs the second light weight information corresponding to (S46). If the current heat index does not exceed the heat index of the previous day, skip S44 and S46 (N of S42), and if the difference between the current heat index and the previous day's heat index is not greater than or equal to any of the light weight reference values, skip S46. Skip (N in S44).

Next, as a light / heavy judgment based on the third criterion, the heat index before the predetermined time is acquired (S48), and the current heat index exceeds the heat index before the predetermined time (Y in S50). ), When the light weight determination unit 34 determines that the difference between the current heat index and the heat index before a predetermined time is equal to or greater than one of the light weight reference values by referring from the top of the plurality of light weight reference values (Y in S52). The light weight output unit 44 outputs the third light weight information corresponding to the determination result (S54). If the current heat index does not exceed the heat index before the predetermined time, skip S52 and S54 (N in S50), and the difference between the current heat index and the heat index before the predetermined time is neither more than the light weight reference value. In that case, S54 is skipped (N of S52). In this figure, an example of making a light weight judgment based on all of the first to third judgment criteria is shown, but the light weight judgment is made only by one or two of the first to third judgment criteria. It may be a specification. Further, in this figure, an example in which the light weight judgment based on the first to third judgment criteria is executed in the order of the first, second, and third judgment criteria may be executed, but these may be executed in another order. It may be a specification that is executed simultaneously in parallel.

The heat index monitoring device 10 according to the embodiment of the present invention has been described above. It is understood by those skilled in the art that this embodiment is merely an example, and that various modifications are possible in the combination of each of these components, and that such modifications are also within the scope of the present invention.

In the above embodiment, an example of realizing the heat index monitoring device 10 by a PLC, an integrated circuit, and a program for controlling the PLC has been described, but in the modified example, for example, an information terminal such as a smartphone or a tablet, a smart watch, or the like has been described. It may be realized by the electronic device of the above and the application program that controls them.

10 Heat index monitoring device, 12 Index acquisition unit, 13 Reference storage unit, 16 Acquisition value storage unit, 18 Average acquisition unit, 19 Setting unit, 20 Heat index sensor, 30 Judgment unit, 32 Alarm judgment unit, 34 Light weight judgment Unit, 40 Result output unit, 42 Alarm output unit, 44 Light weight output unit, 81 Average setting unit, 82 Reference value setting unit, 83 Comparison setting unit.

Claims (8)

The index acquisition unit that acquires the heat index value, and
An acquisition value storage unit that stores the history of the heat index value,
A reference storage unit that stores in advance an alarm reference value for determining whether or not at least one alarm level has been reached,
An alarm determination unit that determines whether or not the current heat index value acquired by the acquisition value storage unit has reached the alarm reference value.
A light weight determination unit that determines the lightness of the alarm by comparison based on the current heat index value acquired by the acquired value storage unit and the history stored in the acquired value storage unit.
A result output unit that outputs alarm information according to the judgment result by the alarm judgment unit and the judgment result by the light / heavy judgment unit.
A heat index monitoring device characterized by being equipped with. Further, an average acquisition unit for acquiring an average value in a predetermined range from a plurality of heat index values stored as a history in the acquisition value storage unit is provided.
The heat index monitoring device according to claim 1, wherein the light weight determination unit determines the light weight of an alarm based on a comparison between the acquired heat index value and the average value. Further provided with an average setting unit for setting a range of days for which the average value is calculated is provided.
The heat index monitoring device according to claim 2, wherein the average acquisition unit obtains an average value from heat index values acquired in the same time zone within a range of days set by the average setting unit. .. The average setting unit sets a relatively short first number of days as a setting for a target person having a high heat tolerance or a target area having a high heat tolerance as a range for calculating the average value, and heat is set. The third aspect of claim 3, wherein a relatively long second number of days is set as a range for calculating the average value as a setting for a target person having low tolerance or a target area having low heat tolerance. Heat index monitoring device. The light weight determination unit is the difference between the current heat index value and the past heat index value acquired at a predetermined date and time among the heat index values stored as history in the acquired value storage unit. The heat index monitoring device according to claim 1, wherein the lightness of the alarm is determined according to the above. Further provided with a comparison setting unit for setting a target selection criterion for the past heat index value to be compared with the current heat index value.
The comparison setting unit selects a target for comparison with a heat index value of a past date and time with a relatively small time difference from the present as a setting for a target person with high heat tolerance or a target area with high heat tolerance. Target selection criteria for setting criteria and comparing the heat index values of past dates and times with a relatively large time difference from the present as settings for subjects with low heat tolerance or target areas with low heat tolerance. The heat index monitoring device according to claim 5, wherein the device is set. Further, a reference value setting unit for setting a light weight reference value for determining the light weight is provided.
In the light weight determination unit, has the difference between the current heat index value and the heat index value obtained in the comparison based on the history stored in the acquired value storage unit reached at least one of the light weight reference values? The heat index monitoring device according to any one of claims 1 to 6, wherein the lightness of the alarm is determined depending on whether or not the alarm is light or not. The reference value setting unit sets a relatively large value as the light weight reference value as a setting for a target person having a high heat tolerance or a target area having a high heat tolerance, and is intended for a target person having a low heat tolerance or The heat index monitoring device according to claim 7, wherein a relatively small value is set as the light weight reference value as a setting for a target area having low heat tolerance.

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