JP2020204468A - Portable environmental measurement device - Google Patents

Abstract

To provide a portable environmental measurement device capable of accurately measuring the temperature of a black ball even in a state to be worn by a worker.SOLUTION: A heatstroke index meter 10 includes: a main body 12 having holes 24 for an attachment; a black ball sensor 14 having a temperature sensor in a substantially-spherical black ball 15 which is provided protruding from the main body 12; and a controller which is provided in the main body 12 and which calculates an index on the basis of a measurement value of the black ball sensor 14. The main body 12 has a plurality of connectors 26A, 26B. The black ball sensor 14 can be connected to either of the connectors 26A, 26B.SELECTED DRAWING: Figure 4

Description

The present invention relates to a portable environmental measurement device, and more particularly to a portable environmental measurement device that is used in a state of being worn by an operator and that obtains a heat index to notify the risk of heat stroke.

It is known that work in a hot environment causes heat stroke, and as a countermeasure, workers have more opportunities to have a portable environment measuring device (so-called heat stroke index meter). The portable environment measuring device generally uses the wet-bulb globe temperature (or heat index WBGT) as an index, and it is necessary to measure the globe temperature for the calculation. Originally, the black globe temperature is supposed to measure the center temperature of a black globe with a diameter of 15 cm, but since it is not possible to carry a large black globe with a portable type, a small black globe is provided and the temperature is measured at the center. , It is used as the black globe temperature by correcting the value. For example, in the portable environment measuring device of Patent Document 1, a small black globe is provided so as to project above the main body, and the index of heat stroke is obtained by measuring the center temperature in the black globe.

By the way, such a portable environment measuring device is often used by placing it in a work place or by wearing it on an operator. For this reason, the main body of the portable environmental measurement device is provided with a mounting tool (for example, a belt, a holder, a string, a strap, a clip, etc.), or an engaging portion (hole or hook) to which the mounting tool can be retrofitted. Etc.) are provided so that the main body can be attached to the operator for use.

Patent No. 6047801

However, in the conventional portable environment measuring device, when the main body is attached to the worker, the black ball above the main body is in close contact with the worker and heat is transferred to the black ball, or the black ball is in the shadow of the worker. There were times when I got in. For this reason, when the main body is attached to the operator, there is a problem that the deviation of the black bulb temperature is large and the index of heat stroke cannot be accurately obtained.

The present invention has been made in view of such circumstances, and the black bulb temperature can be accurately obtained even when worn on an operator, and the heat stroke index and the like can be accurately obtained. An object of the present invention is to provide a portable environment measuring device.

The invention according to claim 1 has a main body having a mounting portion for mounting on an operator and a black having a temperature sensor in a substantially spherical black sphere provided so as to project from the main body in order to achieve the above object. In a portable environment measuring device including a ball sensor unit and a control unit in the main body that calculates an index based on a measured value of the black ball sensor unit, the black ball sensor unit can be attached to and detached from the main body. Provided is a portable environment measuring device characterized in that a plurality of connector portions connected to the above are provided.

According to the present invention, a plurality of connector portions are provided on the main body, and a connector portion for connecting the black ball sensor portion can be selected from the plurality of connector portions. Therefore, the position of the black ball sensor unit can be selected from the positions of a plurality of connector units. As a result, the black ball sensor unit can be arranged at a position away from the operator when the main body is attached or at a position that does not cast a shadow on the operator, so that the heat and shadow of the operator affect the black ball sensor unit. Can be suppressed.

The invention of claim 2 is characterized in that, in claim 1, the plurality of connector portions are provided at least on the right side surface and the left side surface of the main body. According to the present invention, the black ball sensor unit can be arranged on either the right side or the left side of the main body.

A third aspect of the present invention is the first aspect of the present invention, wherein the plurality of connector portions are provided on at least an upper surface of the main body and a surface other than the upper surface. According to the present invention, the black ball sensor unit can be arranged on the upper side of the main body or on any other side.

The invention of claim 4 is the invention of any one of claims 1 to 3, characterized in that it is detachably connected to the connector portion and includes a temperature / humidity sensor portion for measuring temperature and humidity. According to the present invention, since the temperature / humidity sensor unit is also detachably connected to the connector portion of the main body, the position of the temperature / humidity sensor portion can be selected from a plurality of connector portions. Further, the same connector unit can be commonly used for the temperature / humidity sensor unit and the black ball sensor unit.

The invention of claim 5 is characterized in that, in the invention of any one of claims 1 to 4, the discriminating means for discriminating the connector portion to which the black ball sensor portion is connected is provided. According to the present invention, since the position of the connector portion to which the black ball sensor unit is connected can be determined, the correspondence between the position of the black ball sensor unit and the index data can be grasped.

The invention of claim 6 is the invention of any one of claims 1 to 5, characterized in that it is a mounting tool for mounting on the worker or an engaging portion of the main body for mounting the mounting tool. And. According to the present invention, the main body is provided with an engaging portion for a fitting (for example, a hole for passing a belt, a hole for attaching a strap or a string, a hook for engaging a holder or the like). Therefore, the main body can be attached to the operator via the attachment.

According to the present invention, the position of the black ball sensor unit can be selected from the positions of a plurality of connector units provided on the main body, so that the position of the black ball sensor unit away from the operator when the main body is attached and the work It can be arranged at a position where it does not become a shadow of a person, and it is possible to suppress the influence of the heat and shadow of the operator on the black ball sensor unit.

Front view of heat stroke index meter to which the portable environmental measuring device of the present invention is applied Right side view of the heat stroke index meter of FIG. Rear view of the heat stroke index meter of FIG. Front view schematically showing the connection structure between the black globe sensor and the main body Front view schematically showing a heat stroke index meter of another embodiment Front view schematically showing the main body of another embodiment Front view schematically showing a heat stroke index meter of another embodiment

A preferred embodiment of the portable environmental measuring device according to the present invention will be described with reference to an example of a heat stroke index meter according to the accompanying drawings. FIG. 1 is a front view showing a heat stroke index meter 10 to which the present invention is applied, and FIGS. 2 and 3 show a right side view and a back view of the heat stroke index meter 10 respectively.

The heat stroke index meter 10 shown in these figures includes a main body 12 and a black ball sensor unit 14. The black globe sensor unit 14 is a sensor that measures the temperature of a black globe, and includes a black globe 15 formed in a substantially spherical shape, a thermometer (not shown) arranged in the center of the globe, and an arm that supports the black globe 15. It is composed of a portion 16 and a connector portion 17 provided at the base end of the arm portion 16. As will be described later, the connector portion 17 can be connected to any of the connector portions 26A and 26B provided on the main body 12.

On the other hand, a screen 18 is provided on the front surface of the main body 12 as shown in FIG. 1, and the temperature, humidity, heat stroke index, and heat stroke warning display are displayed on the screen 18. Various operation buttons 20 such as a power button and a setting button are provided around the screen 18. Note that FIG. 1 is an example of the arrangement of the screen 18 and the operation buttons 20, and the present invention is not limited to this, and various modes are possible. Further, a member different from the screen 18 and the operation button 20, such as a heat stroke warning light, may be provided.

Inside the main body 12, a control unit including a circuit board and the like, a battery as a power source, and a temperature / humidity sensor are provided (all not shown). The temperature / humidity sensor is a sensor that measures temperature and humidity, and the measurement signal is transmitted to the control unit. The control unit performs various arithmetic processes, and uses the black bulb temperature obtained from the measured value of the black bulb sensor unit 14 and the wet-bulb temperature and dry-bulb temperature obtained from the measured values of the temperature and humidity sensor to obtain humidity. Calculate the bulb black globe temperature. Then, the calculated wet-bulb globe temperature is displayed on the screen 18 as an index of heat stroke, and when the index exceeds a predetermined value, a warning is displayed on the screen 18 or a warning sound is emitted from a microphone (not shown). Or emit. In the present embodiment, a temperature / humidity sensor that measures both temperature and humidity is used, but a temperature sensor and a humidity sensor may be provided separately.

As shown in FIG. 3, on the back side of the main body 12, an engaging portion for a mounting tool is formed as a mounting portion for mounting on an operator. Specifically, elongated holes 24, 24 for passing the attached belt 22 (see FIG. 2) are formed on both sides of the back surface of the main body 12. The holes 24, 24 are formed so as to penetrate the back surface and the side surface of the main body 12, and the main body 12 is formed by passing the belt 30 through the holes 24 and wrapping the holes around a part of the worker (for example, an arm). It is attached to. At that time, by providing the holes 24 and 24 on both sides of the back surface, the main body 12 is stably mounted with the back surface in contact with the operator.

In the present embodiment, elongated holes 24, 24 for the belt are formed as the engaging portion for the fitting, but the present invention is not limited to this, and various modes are used as the engaging portion for attaching the fitting. Is possible. For example, the main body 12 may be provided with a small hole for engaging a string or a strap, or a convex portion or a concave portion for engaging a hard holder as an engaging portion. Further, in the present embodiment, the engaging portion for the mounting tool is provided on the main body 12, but the mounting tool may be provided directly on the main body 12, for example, a mounting tool such as a holder or a clip may be provided on the main body 12. Good.

Next, the connection structure between the black ball sensor unit 14 and the main body 12, which is a feature of the present invention, will be described with reference to FIG. FIG. 4 is a front view schematically showing a connection structure between the main body 12 and the black ball sensor unit 14.

The black ball sensor unit 14 is provided with a columnar connector portion 17 on the side surface of the base end portion of the arm portion 16. On the other hand, cylindrical connector portions 26A and 26B to which the connector portion 17 can be connected are provided on both side surfaces of the main body 12. Specifically, when the main body 12 is viewed from the front, the connector portion 26A is provided at the upper position on the right side surface, and the connector portion 26B is provided at the upper position on the left side surface. Both the connector portions 26A and 26B have the same structure, and are fitted by inserting the connector portion 17 of the black ball sensor portion 14. At the time of fitting, the temperature sensor (not shown) of the black globe sensor unit 14 is conducted to the control unit (not shown) in the main body 12, and the measurement signal of the temperature sensor can be transmitted to the control unit. Further, the connector portion 17 and the connector portions 26A and 26B are firmly fitted when inserted, and the angle of the arm portion 16 with respect to the main body 12 (that is, the position of the black ball 15 with respect to the main body 12) is maintained in the posture at the time of insertion. It has become like. Further, when the connector portion 17 is pulled out from the connector portions 26A and 26B with a strong force, the mating between the connector portion 17 and the connector portions 26A and 26B is released.

According to the heat stroke index meter 10 configured as described above, the two connector portions 17 of the black globe sensor portion 14 can be connected by inserting them into any of the connector portions 26A and 26B. Therefore, when the position of the black ball sensor unit 14 is inappropriate, the connector unit 17 is pulled out from the connected connector units 26A and 26B and inserted into another connector unit 26A and 26B, whereby the black ball sensor unit 14 The position can be changed. Further, the position of the black globe 15 with respect to the main body 12 can be freely changed by changing the angle of the arm portion 16 when the connector portion 17 is inserted into the connector portions 26A and 26B.

Next, the action of the heat stroke index meter 10 configured as described above will be described. When the heat stroke index meter 10 is attached to the worker and used, the main body 12 is attached to the worker by the belt 22 shown in FIG. At that time, the back surface of the main body 12 (the surface on the right side in FIG. 2) is in close contact with the worker, and the black ball 15 of the black ball sensor unit 14 is also easily in contact with the worker. For this reason, there arises a problem that the heat of the worker is easily transmitted to the black ball 15 and a problem that a part of the black ball 15 is easily reflected in the shadow of the worker. As a result, the value of the black bulb temperature deviates, and the index of heat stroke becomes a value different from the actual value, so that the warning of heat stroke cannot be issued at the correct timing.

In order to solve such a problem, the heat stroke index meter 10 of the present embodiment can change the position of the black bulb 15. More specifically, since the main body 12 is provided with two connector portions 26A and 26B, the connection partner of the black ball sensor portion 14 can be selected from the two connector portions 26A and 26B. For example, as shown by the solid line in FIG. 4, if the black ball sensor unit 14 is connected to the position of the connector unit 26A and the situation is inappropriate, the connector 26B is pulled out from the connector unit 26A and as shown by the alternate long and short dash line. Connect to. As a result, the black globe 15 of the black globe sensor unit 14 is arranged at a position considerably distant from the original position, and improvement of the measurement environment can be expected. As a result, it is possible to prevent the black globe 15 from entering the shadow of the operator, so that the measurement accuracy of the black globe temperature is improved and the heat stroke index can be correctly obtained.

In this embodiment, two connector portions 26A and 26B are provided, but the number of connector portions is not limited to this, and may be three or more.

Further, in the above-described embodiment, the connector portions 26A and 26B are provided on the side surface of the main body 12, but the position of the connector portion is not limited to this, and various modes are possible. For example, the example of FIG. 5 is an example in which the connector portions 26C, 26D, and 26E are provided on the upper surface of the main body 12, and the connector portions 26F are provided on the lower surface of the main body 12. Each of the connector portions 26C to 26F has the same structure so that the connector portion 17 of the black ball sensor portion 14 can be connected. In the case of the main body 12 configured in this way, by selecting the connection partner of the connector part 17 of the black ball sensor part 14 from the connector parts 26C to 26E, the positions of the black ball 15 can be set at three places above the main body 12 or. You can choose from one location below. In the black ball sensor portion 14 of FIG. 5, the connector portion 17 is formed on the base end surface of the arm portion 16. As described above, the position of the connector portion 17 can be in various modes.

In the example of FIG. 6, connector portions 26G, 26H, 26I, and 26J are provided on the front surface of the main body 12, and all the connector portions 26G to 26J have the same structure so that the connector portion 17 of the black ball sensor portion 14 can be connected. It has become. In the case of the main body 12 configured in this way, the black ball sensor unit 14 can be mounted at any position on the front surface of the main body 12.

It is also possible to appropriately combine the above-mentioned connector portions 26A to 26J, and the connector portions may be provided on all of the side surface, the upper surface, the lower surface, and the front surface of the main body 12, or the connector portions may be provided on some surfaces. it can. Further, the main body 12 may be provided with an inclined surface to arrange the connector portion, and the black ball sensor portion 14 may be attached at an inclined angle. As described above, the arrangement of the connector portions may be arbitrary, but it is preferable that the positions of the black globes 15 differ as much as possible depending on the selected connector portions 26A to 26J. For example, when it is provided on the right side surface and the left side surface of the main body 12, or when it is provided on the upper surface and other surfaces of the main body 12, the position of the black ball 15 can be significantly changed, which is preferable.

Further, the above-described embodiment has been described with the example of the cylindrical connector portion 17 and the cylindrical connector portions 26A to 26J as the connecting structure of the black ball sensor portion 14 and the main body 12, but the connecting structure is limited to this. Various modes are possible, and existing standards may be used.

Further, in each of the above-described embodiments, it is preferable to provide a means for detecting when the black ball sensor unit 14 is connected to any of the connector units 26A to 26J. For example, it is preferable that the control unit in the main body 12 determines the connection position of the black ball sensor unit 14 by detecting the energized state. Then, when none of the connector portions 26A to 26J are connected, it may be displayed on the screen 18 or the like to warn.

Further, it is preferable to discriminate the connector portions 26A to 26J to which the black ball sensor portion 14 is connected and store them in a memory or the like. For example, it is preferable that the control unit in the main body 12 determines the connection position of the black ball sensor unit 14 by detecting the energized state and stores it in the memory together with the heat stroke index. Thereby, it is possible to confirm whether or not the heat stroke index is appropriate by collating with the position of the black globe sensor unit 14.

Further, in the above-described embodiment, not only the black ball sensor unit 14 but also other sensor units may be detachably connected to the connector portions 26A to 26J of the main body 12. For example, in FIG. 7, the external temperature / humidity sensor unit 28 can be connected to the connector units 26A to 26J of the main body 12. Specifically, the temperature / humidity sensor unit 28 is provided with a connector unit 27, and the connector unit 27 is configured to have the same shape as the connector unit 17 of the black ball sensor unit 14. The main body 12 is provided with side connector portions 26A and 26B, an upper surface connector portion 26D, a lower surface connector portion 26F, and front front connector portions 26I and 26J. Therefore, any one of a plurality of connector portions 26A to 26J can be selected to connect the connector portions 27. As a result, the position of the temperature / humidity sensor unit 28 can be freely selected and can be arranged at a position away from the operator. Further, the temperature / humidity sensor unit 28 can be arranged at a position away from the black globe sensor unit 14. In this example, the temperature / humidity sensor 28 for measuring temperature and humidity has been described, but a temperature sensor for measuring temperature and a humidity sensor for measuring humidity may be provided separately.

Further, in the above-described embodiment, the connector portions 26A to 26J to which the black bulb sensor portion 14 and the temperature / humidity sensor portion 28 are not connected may be closed with rubber caps (not shown).

Further, the above-described embodiment has been described with the example of a heat stroke index meter as an example of a portable environment measuring device, but the present invention is not limited to this, and can be applied to a sensor for measuring the environment, for example, influenza. It can also be applied to a device that displays an index or a dryness index.

10 ... Heat stroke index meter, 12 ... Main body, 14 ... Black ball sensor part, 15 ... Black ball, 16 ... Arm part, 17 ... Connector part, 18 ... Screen, 20 ... Operation button, 22 ... Belt, 24 ... Hole, 26A-26J ... Connector part, 27 ... Connector part, 28 ... Temperature / humidity sensor part

Claims (6)

Based on the measurement values of a main body having a mounting portion for mounting on an operator, a black bulb sensor portion having a temperature sensor in a substantially spherical black globe provided protruding from the main body, and a black bulb sensor portion. In a portable environment measuring device provided with a control unit in the main body for calculating an index,
A portable environment measuring device characterized in that the main body is provided with a plurality of connector portions to which the black ball sensor portion is detachably connected. The portable environmental measurement device according to claim 1, wherein the plurality of connector portions are provided at least on the right side surface and the left side surface of the main body. The portable environment measuring device according to claim 1, wherein the plurality of connector portions are provided on at least an upper surface of the main body and a surface other than the upper surface. The portable environmental measurement device according to any one of claims 1 to 3, further comprising a temperature / humidity sensor unit that is detachably connected to the connector unit and measures temperature and humidity. The portable environment measuring device according to any one of claims 1 to 4, further comprising a discriminating means for discriminating a connector portion to which the black ball sensor portion is connected. The mounting portion according to any one of claims 1 to 5, wherein the mounting portion is a mounting tool for mounting on the worker or an engaging portion of the main body for mounting the mounting tool. Portable environment measuring device.

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