JP2016211983A - Method for grasping work risk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To grasp work risk rapidly.SOLUTION: A method for grasping work risk includes: a reference value setting step for setting the reference value of a temperature thermal index in a plurality of work places by the work place; a temperature thermal index measurement step for measuring a temperature thermal index in the plurality of work places by the work place; a calculation step for calculating a difference between the temperature thermal index and the reference value by the work place; and a ranking step for ranking high and low of a difference among the plurality of work places.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a work risk grasping method.

  In order to grasp the danger of heat stroke at the work place (hereinafter also referred to as work risk), it is equipped with sensors that measure temperature and humidity, and a thermal index (WBGT: Wet bulb globe temperature) based on the output of each sensor An apparatus for calculating is known (see, for example, Patent Document 1). When such a device is installed at a work place and the calculated WBGT value exceeds a predetermined reference value, measures against heat stroke (for example, evacuation to a cool environment, intake of water and salt, resting Etc.).

JP 2003-114284 A

  However, when managing multiple work places, the work conditions (work environment, work content, etc.) may differ depending on the work place (in other words, the reference value differs), so it is difficult to determine where to preferentially take measures. There was a problem. As a result, if the number of work places to be managed becomes too large, it becomes impossible to quickly grasp the work risk, and there is a risk that countermeasures will be delayed.

  The present invention has been made in view of such conventional problems, and its main purpose is to quickly grasp the work risk.

In order to achieve such an object, the work risk grasping method of the present invention includes a reference value setting step of setting a reference value of a thermal index of a plurality of work places in units of the work place, and the thermal index of the plurality of work places. A thermal index measurement step for measuring the unit of the work place, a calculation step for calculating a difference between the thermal index and the reference value in the unit of the work place, and a level of the difference of the plurality of work places And a ranking step.
According to such a work risk grasping method, it is possible to quickly grasp the work risk regardless of the number of work places to be managed.

This work risk grasping method further includes a rearrangement step of rearranging the differences of the plurality of work places with the respective work places after the ranking step, in ascending order or descending order. It is desirable.
According to such a work risk grasping method, the work risk can be grasped more quickly.

In this work risk grasping method, it is preferable that the reference value is set based on acclimatization to the heat of the worker, work strength, the type of clothes, and the presence or absence of airflow.
According to such a work risk grasping method, it is possible to set a reference value according to work conditions.

  According to the present invention, it is possible to quickly grasp the work risk.

It is a schematic explanatory drawing which shows the structure of the system of this embodiment. FIG. 2 is a block diagram showing a configuration of a computer 100. It is a flowchart of the work risk grasping | ascertaining method of this embodiment. 4A and 4B are diagrams illustrating an example of a screen displayed on the display unit 130 of the computer 100. FIG. FIG. 4A is a diagram before rearrangement, and FIG. 4B is a diagram after rearrangement.

=== Embodiment ===
<About system configuration>
FIG. 1 is a schematic explanatory diagram showing the configuration of the system of this embodiment. FIG. 2 is a block diagram illustrating a configuration of the computer 100. This system is a system for measuring and managing temperature indicators (WBGT: Wet bulb globe temperature) at a plurality of work places. The WBGT is sometimes called “wet bulb black bulb temperature”, “heat index”, or “heat stroke index”.

  As shown in FIG. 1, the system according to the present embodiment is provided in a building 1 and a construction office 3 that are construction work sites. Here, for simplification of explanation, the building 1 has five floors (1F to 5F) above the ground, and the number of work places on each floor is one. In each work place (each floor), a device (child device 10) for measuring WBGT is arranged. In the construction office 3, a master unit 20 and a computer 100 are arranged.

  The subunit | mobile_unit 10 is provided with the measurement part 12 which has the temperature sensor which measures black-ball temperature, an air temperature sensor, and a humidity sensor (all are not shown). The measurement unit 12 obtains WBGT based on the output of each sensor.

  The value of WBGT is calculated by the following equation using the natural wet bulb temperature, black bulb temperature, and dry bulb temperature.

・ When there is no solar irradiation indoors and outdoors WBGT = 0.7 × natural wet bulb temperature + 0.3 × black bulb temperature (1)
・ When there is solar irradiation outdoors WBGT = 0.7 × natural wet bulb temperature + 0.2 × black bulb temperature + 0.1 × dry bulb temperature (2)

  In the present embodiment, the processing unit 140 of the computer 100 described later uses the measured value of each sensor of the measuring unit 12 of the slave unit 10 to determine the WBGT value (hereinafter also referred to as the WBGT value) according to the equation (1) or (2). Say). In this embodiment, the natural wet bulb temperature is obtained by using a “wet air diagram” from two pieces of information of temperature and humidity.

  Moreover, the subunit | mobile_unit 10 is provided with the communication part 14 which has communication by radio | wireless, and a relay function (router function), and the measured value of each sensor of the measurement part 12 is passed through another subunit | mobile_unit 10 (or directly). It transmits wirelessly to the main unit 20 of the construction office 3. Each of the plurality of slave units 10 is set with an identification number for identification for specifying each slave unit 10 (that is, specifying a work place). Each slave unit 10 transmits data in which the identification number is associated with the measurement value to the master unit 20.

  The master 20 of the construction office and the computer 100 are connected so as to communicate with each other. In the present embodiment, the parent device 20 and the computer 100 are connected by wire. However, the present invention is not limited to this, and communication may be performed wirelessly.

  Master device 20 receives data (identification number, measurement value) from slave device 10 and sends the received data to computer 100.

  As shown in FIG. 2, the computer 100 includes an input unit 110, a storage unit 120, a display unit 130, and a processing unit 140.

  The input unit 110 is a part that performs input to the computer 100, and is, for example, a keyboard, a mouse, and an input interface for receiving data from the parent device 20.

  The storage unit 120 includes a RAM, a ROM, an HDD, and the like, and is a part that stores various data and programs. In the present embodiment, the storage unit 120 stores a WBGT reference value determined for various work conditions, a program for executing a work risk grasping method described later, and the like.

  The display unit 130 is a part that displays the processing result of the processing unit 140, and is, for example, a display.

  The processing unit 140 is configured by a CPU or the like and performs various calculations. In the present embodiment, the processing unit 140 calculates the WBGT value of each work place from the data (identification number, measurement value) of the child device 10 received from the parent device 20. Furthermore, the processing unit 140 calculates the difference between the WBGT value and the WBGT reference value in units of work places based on the WBGT reference value set for each work place. Then, the level of the difference is ranked.

<About work risk assessment method>
Next, the work risk grasping method by the system of FIG. 1 will be described. FIG. 3 is a flowchart of the work risk grasping method according to the present embodiment, and FIGS. 4A and 4B are diagrams illustrating an example of a screen displayed on the display unit 130 of the computer 100. FIG. 4A is a diagram before rearrangement, and FIG. 4B is a diagram after rearrangement.

  First, WBGT reference values of a plurality of work places in the building 1 at the work place are set in units of work places (in the present embodiment, each floor) (corresponding to a reference value setting step). Here, an administrator or a worker inputs in advance the items of “thermal acclimatization”, “work strength”, “clothing”, and “airflow” (see FIGS. 4 and 5) as work conditions for each work place. Input to the computer 100 by (mouse, keyboard, etc.). “Heat acclimatization” means acclimatization to the heat of the worker, and means that the human body is in a state adapted to heat. Even in the same environment, people who are not acclimated to heat are more prone to heat stroke than those who are acclimated to heat. “Work intensity” refers to the magnitude of the metabolic rate level. In light manual work or desk work, the work intensity is low (low metabolic rate), and in the case of strenuous hard work, the work intensity is high (high metabolic rate). In the “clothes”, the type of clothes to be worn when performing work (for example, work clothes, SMS polypropylene coveralls, etc.) is set. In “Airflow”, presence or absence of airflow is set.

  Based on the contents of the four items registered (input), the processing unit 140 of the computer 100 refers to the storage unit 120 and sets the WBGT reference value in units of work places. For example, in the case of FIG. 4, 18 is set as the reference value on the fourth floor where the work intensity is extremely high. On the other floors (medium work intensity), 26 is set as the reference value. The set reference value is stored in the storage unit 120 in association with each work place.

  Next, the measurement unit 12 of the child device 10 arranged at each work place (installation place) measures the temperature, humidity, black bulb temperature, etc. for calculating the WBGT value in units of work places (S102). : Equivalent to thermal index measurement step). Then, the measured data is associated with the identification number (work place) and transmitted from the communication unit 14 to the parent device 20. In addition, base unit 20 transmits data received from slave unit 10 to computer 100.

  When the computer 100 receives these data, the processing unit 140 calculates the WBGT value from the measurement value of the slave unit 10 in units of work places. Further, as shown in FIG. 4A, the processing unit 140 calculates the difference between the WBGT value and the WBGT reference value in units of work places (S103: equivalent to a calculation step). Here, the reason why the difference between the WBGT value and the WBGT reference value is calculated is to accurately grasp the risk of heat stroke. For example, when comparing the second floor and the fourth floor in FIG. 4A, the WBGT value of the second floor is higher than the WBGT value of the fourth floor, but the fourth floor has a lower WBGT reference value than the other floors. For this reason, the difference between the WBGT value and the WBGT reference value is larger on the fourth floor than on the second floor, and the risk of heat stroke is higher on the fourth floor. That is, the greater the difference between the WBGT value and the WBGT reference value, the higher the risk of heat stroke.

  When the calculation of the difference between the WBGT value and the reference value is completed for all the work places, the processing unit 140 ranks the difference (S104: equivalent to the ranking step), and as shown in FIG. 4B, Rearrangement is performed in descending order (or low order) of the difference between the WBGT value and the reference value (S105: equivalent to the rearranging step). Then, a list of the results is displayed on the display unit 130 (display or the like).

  By doing so, it becomes easy to visually grasp at which work place the risk of heat stroke is high. Furthermore, in this embodiment, the display color is changed according to the difference between the WBGT value and the WBGT reference value. For example, when the WBGT value greatly exceeds the WBGT reference value as in the fourth floor in this example, it is displayed in a color (for example, red) that is more conspicuous than the other floors. This makes it easier to grasp the degree of risk. In this embodiment, rearrangement is performed in descending order of the difference between the WBGT value and the reference value. However, when the number of work places can be displayed on one screen, the ranking of the difference between the WBGT value and the reference value. Accordingly, the risk level can be easily grasped only by changing the display color (see, for example, FIG. 4A). When the number of work places becomes so large that it cannot be displayed on one screen, rearranging as in this embodiment becomes more effective.

  The danger is notified to a work place with a high work risk by, for example, a notification means such as mail delivery or a three-color rotating lamp. For example, the computer 100 transmits the data to the slave unit 10 at the work place where the difference between the calculated WBGT value and the reference value is large to notify the danger. This makes it possible to quickly grasp work risks regardless of the number of work places to be managed, and to take measures against heat stroke (for example, condemnation to a cool environment, intake of water and salt, rest, etc.) Can be.

  Thereafter, when a predetermined time has elapsed (YES in S106), the process returns to step S102, and the temperature, humidity, black bulb temperature, etc. for the WBGT value are measured again.

  As described above, the work risk grasping method according to the present embodiment includes the step (S101) of setting the WBGT reference value of a plurality of work places in the building 1 in units of work places (each floor), and the plurality of work places. The step of measuring the WBGT value in units of work place (S102), the step of calculating the difference between the WBGT value and the WBGT reference value in units of work place (S103), and the level of the calculated difference are ranked. (S104). Thereby, the risk of heat stroke can be quickly grasped regardless of the number of work places to be managed.

  Furthermore, in this embodiment, since the WBGT value and the WBGT reference value are rearranged in descending order, the risk of heat stroke can be grasped more quickly.

=== About Other Embodiments ===
The above embodiment is for facilitating the understanding of the present invention, and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof. In particular, the embodiments described below are also included in the present invention.

<About the work place>
In the above-described embodiment, the work place to be managed is the construction work site (building 1). However, the work place is not limited to this, and may be a work place other than the construction work. Also, for example, it can be applied to nursing homes.

  Moreover, although the building 1 of the above-mentioned embodiment was 5 stories, it is not restricted to this, The 4th floor or less, or the 6th floor or more may be sufficient. In the above-described embodiment, one work place is provided for each floor of the building 1. However, a plurality of work places may be provided on one floor. In this case, the slave unit 10 may be provided for each work place on each floor, and the WBGT reference value may be set. As the number of work places to be managed increases, the effect (the effect of quickly grasping the risk of heat stroke) can be obtained by performing the work risk grasping method of the present embodiment.

<About WBGT standard value>
In the above-described embodiment, the WBGT reference value is set based on the four items of “thermal acclimatization”, “work strength”, “clothing”, and “airflow”, but is not limited thereto. For example, the ease of occurrence of heat stroke varies depending on the physical condition of the individual (insufficient sleep, hangover), etc., so these conditions may be added.

<About handset 10>
In the above-described embodiment, the slave unit 10 includes the measurement unit 12 and the communication unit 14, but the measurement unit 12 and the communication unit 14 may be provided separately. In the above-described embodiment. Although the subunit | mobile_unit 10 communicated by radio | wireless, it is not restricted to this, The some subunit | mobile_unit 10 may be wire-connected. In the present embodiment, the slave unit 10 transmits the measurement value of each sensor to the computer 100. However, the present invention is not limited to this. For example, the measurement unit 12 of the slave unit 10 can detect the WBGT based on the output of each sensor. A value may be calculated, and the calculated WBGT value may be transmitted to the computer 100.

1 Building 3 Construction Office 10 Slave Unit 12 Measuring Unit 14 Communication Unit 20 Master Unit 100 Computer 110 Input Unit 120 Storage Unit 130 Display Unit 140 Processing Unit

Claims (3)

A reference value setting step for setting a reference value of a thermal index of a plurality of work places in units of the work place;
A thermal index measurement step of measuring the thermal index of the plurality of work places in units of the work place;
A calculation step of calculating a difference between the thermal index and the reference value in units of the work place;
A ranking step of ranking the differences of the plurality of work places;
An operation risk grasping method characterized by having The work risk grasping method according to claim 1,
After the ranking step, the work risk grasping method further comprises a rearrangement step of rearranging the differences between the plurality of work places with each work place, and rearranging the differences in order from the highest to the lowest. . The work risk grasping method according to claim 1 or claim 2,
The work risk grasping method, wherein the reference value is set based on acclimatization to the heat of the worker, work strength, type of clothes, and presence / absence of airflow.