JP2020204469A - Portable environmental measurement device - Google Patents

Abstract

To provide a portable environmental measurement device capable of accurately measuring temperature and moisture regardless of usage conditions, so as to allow of accurately obtaining an index of heatstroke.SOLUTION: A heatstroke index meter 10 includes: a black ball sensor 14 for measuring temperature in a substantially-spherical black ball 15; an environment sensor 30 for measuring at least temperature or moisture; a main body 12 storing a controller for calculating an index on the basis of measurement values of the black ball sensor 14 and the environment sensor 30. The environment sensor 30 is detachable from the main body 12. The controller can calculate the index on the basis of the measurement value of the environment sensor 30 even in such a state that the environment sensor 30 is away from the main body 12.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 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 measures 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 (see, for example, Patent Document 1). In addition to the black bulb temperature, the portable environmental measuring device requires a dry bulb temperature and a wet bulb temperature, and a temperature and humidity sensor is built in the main body to measure the temperature and humidity.

By the way, the environment suitable for measurement is different between the black globe sensor unit and the temperature / humidity sensor, and it is desirable that the black globe sensor unit measures outdoors in direct sunlight, whereas the temperature / humidity sensor is ventilated. It is desirable to measure in a good shade. For this reason, in a general band-type environment measuring device (heat stroke index meter), the black globe sensor unit is provided so as to project above the main body that is easily exposed to direct sunlight, and the temperature / humidity sensor is installed inside the main body that ensures breathability. It is arranged.

Patent No. 6047801

However, due to the limitation of being portable, it is difficult to arrange both the black globe sensor unit and the temperature / humidity sensor in an optimum measurement environment. For example, when used outdoors, if the black globe sensor unit is placed in direct sunlight, the internal temperature of the main body will gradually rise due to the direct sunlight. Since heat-generating substances such as circuit boards are also arranged in the small main body, the internal temperature of the main body tends to rise, and the measured values of the temperature / humidity sensor deviate greatly. For this reason, the conventional portable environmental measuring device has a problem that it is difficult to accurately obtain an index of heat stroke.

Similar problems can occur when the operator wears and uses it. That is, the portable environment measuring device is often used by being placed in a work place or worn by an operator. When the main body is attached to the worker, the air permeability of the main body is impaired by the worker, so that the temperature / humidity sensor in the main body tends to cause a measurement error, and it becomes difficult to accurately obtain the index of heat stroke.

The present invention has been made in view of such circumstances, and is a portable environment in which the temperature and humidity can be accurately measured and the heat stroke index and the like can be accurately obtained regardless of the usage conditions. It is an object of the present invention to provide a measuring device.

In order to achieve the above object, the invention according to claim 1 has a black ball sensor unit that measures the temperature inside a substantially spherical black ball, an environment sensor unit that measures at least temperature or humidity, and the black ball sensor unit. In a portable environment measurement device including a control unit that calculates an index based on the measured value of the environment sensor unit and a main body that houses the control unit, the environment sensor unit is attached to and detached from the main body. The control unit is flexible, and is characterized in that the index is calculated based on the measured value of the environment sensor unit regardless of the detached state of the environment sensor unit and the main body.

According to the present invention, since the index can be calculated even when the environment sensor unit is separated from the main body, the degree of freedom in arranging the environment sensor unit is high, and the environment sensor unit is arranged in a measurement environment different from that of the black ball sensor unit. Can be done. For example, even when the black globe sensor unit is arranged in direct sunlight, the environment sensor unit can be arranged in a position where it is not exposed to direct sunlight. Further, even when the main body is attached to the worker, the environment sensor unit can be arranged at a position away from the worker. As a result, the temperature and humidity can be measured without being affected by the influence of direct sunlight, the body temperature of the worker, and the heat generation inside the main body, and the index can be accurately obtained.

The invention of claim 2 is the invention of claim 1, wherein the environment sensor unit and the main body each include a connector portion, and the environment sensor portion and the main body are connected via the two connector portions, and the above 2 The environment sensor unit and the main body are connected to each other via a cable having connector portions connected to each of the connector portions at both ends. According to the present invention, the environment sensor unit and the main body can be directly connected via the connector unit, or can be separated as necessary and connected by a cable.

The invention of claim 3 is the invention of claim 1, wherein the environment sensor unit is connected via a take-up cable or a telescopic cable provided in the main body. According to the present invention, the environment sensor unit and the main body are connected via a take-up cable or a telescopic cable, and the distance between the environment sensor unit and the main body can be freely changed.

The invention of claim 4 is the invention of claim 1, characterized in that it includes a wireless communication means for wirelessly communicating the environment sensor unit and the main body. According to the present invention, wireless communication can be performed even when the environment sensor unit and the main body are separated from each other.

The invention of claim 5 is the invention of any one of claims 1 to 4, wherein the black ball sensor unit is detachable from the main body, and the control unit includes the black ball sensor unit and the main body. It is characterized in that the index is calculated based on the measured value of the black ball sensor unit regardless of the detached state. According to the present invention, since the index can be calculated in a state where not only the environment sensor unit but also the black ball sensor unit is separated, the degree of freedom in arranging the black ball sensor unit and the environment sensor unit is high, and the accuracy is further improved. Can be done.

The invention according to claim 6 has a black ball sensor unit that measures the temperature inside a substantially spherical black ball, an environment sensor unit that measures at least temperature or humidity, and the black ball sensor unit in order to achieve the above object. In a portable environment measuring device including a control unit that calculates an index based on the measured value of the environment sensor unit and a main body that houses the control unit, the black ball sensor unit refers to the main body. The portable environment is detachable, and the control unit calculates the index based on the measured value of the black ball sensor unit regardless of the detachable state of the black ball sensor unit and the main body. Provide a measuring device.

According to the present invention, since the index can be calculated even when the black globe sensor unit is separated from the main body, the degree of freedom in arranging the black bulb sensor unit is high, and the black globe sensor unit is arranged in a measurement environment different from that of the environment sensor unit. can do. For example, even when the black globe sensor unit is arranged in direct sunlight, the environment sensor unit can be arranged in a position where it is not exposed to direct sunlight. Further, even when the main body is attached to the operator, the black ball sensor unit can be arranged at a position away from the operator. As a result, the black bulb temperature can be measured without being affected by the body temperature of the worker and the heat generated in the main body, and the index can be accurately obtained.

According to the present invention, since the index can be calculated in a state where the sensor unit is separated from the main body, the sensor unit can be freely arranged, the measurement accuracy can be improved, and the index can be accurately obtained.

Front view of heat stroke index meter to which the portable environmental measuring device of the present invention is applied Left side view of the heat stroke index meter of FIG. Rear view of the heat stroke index meter of FIG. Explanatory diagram showing an example of the usage situation of the heat stroke index meter of FIG. Explanatory drawing showing usage situation of heat stroke index meter different from FIG. Front view showing a heat stroke index meter of another embodiment Front view showing a heat stroke index meter of another embodiment Front view showing a heat stroke index meter of another embodiment Front view 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 left side view and a rear view of the heat stroke index meter 10 respectively.

The heat stroke index meter 10 shown in these figures includes a main body 12, a black ball sensor unit 14, and an environment sensor unit 30. 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 part 16.

As shown in FIG. 1, a screen 18 is provided on the front surface of the main body 12, 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 and a battery as a power source are provided (both are not shown). 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, the wet-bulb temperature and the dry-bulb temperature obtained from the measured value of the environmental sensor unit 30, which will be described later. Then, the wet-bulb globe temperature is calculated. 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.

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.

On the other hand, the environment sensor unit 30 is a sensor that measures temperature and humidity, and is configured to be separable from the main body 12. Specifically, the environment sensor unit 30 is composed of a small rectangular casing 31, a temperature / humidity sensor (not shown) provided inside the casing 31, and a connector unit 32. The small casing 31 is provided with ventilation holes (not shown) on its side surface and lower surface, and the internal space is maintained in a ventilation state. A pin-shaped connector portion 32 is provided on the upper surface of the small casing 31 and can be detachably connected by being inserted into the annular connector portion 26 provided on the main body 12 side. The casing 13 on the main body 12 side has a shape cut out according to the shape of the small casing 31 (specifically, a shape in which the lower left portion in the front view of FIG. 1 is cut out according to the shape of the small casing 31). ), By connecting the connector portion 32 to the connector portion 26, the small casing 31 is fitted into the notched portion and integrated, and is formed in a rectangular shape as a whole. When the connector unit 32 is connected to the connector unit 26, the temperature / humidity sensor in the small casing 31 is electrically connected to the control unit in the main body 12, and the measurement signal of the temperature / humidity sensor can be transmitted to the control unit.

Next, the connection structure between the environment sensor unit 30 and the main body 12, which is a feature of the present invention, will be described with reference to FIGS. 1 and 4. FIG. 4 is a front view schematically showing a connection structure between the main body 12 and the black ball sensor unit 14.

As described above, the environment sensor unit 30 is detachable from the main body 12, and as shown in FIG. 1, the environment sensor unit 30 is attached to the main body 12 by inserting the connector unit 32 into the connector unit 26. Even in this state, the environment sensor unit 30 can measure the temperature and humidity, and the control unit inside the main body 12 can calculate the wet-bulb globe temperature.

Further, the environment sensor unit 30 can be separated from the main body 12 as shown in FIG. When separated from the main body 12, the environment sensor unit 30 and the main body 12 can be connected by using the connecting cable 34. The connecting cable 34 includes a connector portion 36 that can be connected to the connector portion 26 and a connector portion 38 that can be connected to the connector portion 32, and by connecting the connector portions 36 and 38 to the connector portions 26 and 32, respectively. , The temperature / humidity sensor of the environment sensor unit 30 is electrically connected to the control unit in the main body 12. Therefore, the wet-bulb globe temperature can be calculated by the control unit even when the casing of the environment sensor unit 30 is separated from the main body 12.

Next, the action of the heat stroke index meter 10 configured as described above will be described. When used outdoors, the black bulb sensor unit 14 is desired to measure outdoors in direct sunlight, and the environment sensor unit 30 is desired to measure in a well-ventilated shade. However, as shown in FIG. 1, when the environment sensor unit 30 is integrated with the main body 12, the black ball sensor unit 14 and the environment sensor unit 30 are close to each other, so that each of them can be arranged in a favorable environment. difficult. For example, when the black globe sensor unit 30 is installed in direct sunlight, the environment sensor unit 30 is also placed in direct sunlight, so that the temperature tends to rise. Further, when the main body 12 is attached to the worker by the belt 22, the back surface of the main body 12 comes into contact with the worker, and the environment sensor unit 30 is easily affected by the body temperature of the worker. Further, by being in close contact with the operator, the air permeability of the small casing 31 is lowered, and the temperature of the environment sensor unit 30 is likely to rise.

Therefore, in the present embodiment, as shown in FIG. 4, the small casing 31 of the environment sensor unit 30 is separated from the casing 13 of the main body 12, and the environment sensor unit 30 and the main body 12 are connected by the connecting cable 34. Then, while the main body 12 is arranged in direct sunlight, the environment sensor unit 30 is arranged in a well-ventilated place such as in the shade. When the main body 12 is attached to an operator, the environment sensor unit 30 separated from the main body 12 is attached under the brim of the helmet. As a result, the temperature and humidity can be accurately measured by the environment sensor unit 30 while the black bulb temperature can be accurately measured by the black globe sensor unit 14, so that the wet-bulb globe temperature can be accurately obtained.

Although the present embodiment has been described with an example in which the separated environment sensor unit 30 and the main body 12 are connected by a connecting cable 34, the present embodiment is not limited to this, and various modes are possible. For example, in FIG. 5, wireless communication means (not shown) is provided in both the main body 12 and the environment sensor unit 30, and the temperature and humidity of the environment sensor unit 30 even when the environment sensor unit 30 is separated from the main body 12. Data can be wirelessly transmitted to the control unit of the main body 12. Therefore, the wet-bulb globe temperature can be accurately obtained by the control unit in the main body 12 even in the separated state. When the wireless communication means is provided as shown in FIG. 5, the attachment / detachment mechanism between the environment sensor unit 30 and the main body 12 is not limited to the connector units 26 and 32, and various methods such as magnetization with a magnet can be adopted.

Further, in the heat stroke index meter 40 shown in FIG. 6, a take-up reel 42 is provided on the main body 12, and the cord 44 can be pulled out from the reel 42. The tip of the cord 44 is attached to the environment sensor unit 30, and the cord 44 is pulled out from the take-up reel 42 when the small casing 31 of the environment sensor unit 30 is separated from the casing 13 of the main body 12. Also in this case, since the temperature / humidity measurement data is transmitted with the environment sensor unit 30 separated from the main body 12, the wet-bulb globe temperature can be accurately obtained. In the example of the heat stroke index total 40, the take-up reel 42 was used, but a stretchable cord may be used.

In the above-described embodiment, the environment sensor unit 30 is separated from the main body 12, but the present invention is not limited to this, and the black globe sensor unit 14 may be separated from the main body 12. For example, in the heat stroke index meter 50 shown in FIG. 7, a connector portion 54 is provided on the arm portion 16 of the black ball sensor portion 14, and this connector portion 54 can be connected to the connector portion 52 provided on the upper surface of the main body 12. It is configured as follows. Further, the connector unit 52 and the connector unit 54 can be connected by a connecting cable (not shown), and the measurement data of the black ball sensor unit 14 can be obtained even when the black ball sensor unit 14 is separated from the main body 12. It can be transmitted to the control unit in the main body 12. Therefore, since the black ball sensor unit 14 can be separated from the main body 12 and freely arranged, the measurement accuracy of the black ball temperature can be improved, and the wet ball black ball temperature can be obtained more accurately. In the case of heat stroke 50 in FIG. 7, a wireless transmission means or a take-up reel may be used. Further, only the black ball sensor unit 14 may be separated from the main body 12.

In the heat stroke index meter 50 shown in FIG. 7, the black ball sensor unit 14 is separated from the main body 12, but the black ball sensor unit 14 may be separated from the environment sensor unit 30. In the heat stroke index meter 60 shown in FIG. 8, the environment sensor unit 30 is connected to the main body 12, and the black ball sensor unit 14 is connected to the environment sensor unit 30. That is, the connector portion 62 of the environment sensor unit 30 is connected to the connector portion 61 provided on the main body 12, and the connector portion 63 of the environment sensor unit 30 is further connected to the connector portion 64 of the black ball sensor unit 14. The connector portion 61 and the connector portion 63, and the connector portion 62 and the connector portion 64 have the same configuration, and the connector portion 64 of the black ball sensor portion 14 can be connected to the connector portion 61 of the main body 12. Another connector portion 65 is provided on the lower surface of the main body 12, and the environment sensor portion 30 and the black globe sensor portion 14 can be directly connected or can be connected via the connecting cable 34. According to the heat stroke index meter 60 configured as shown in FIG. 8, the black ball sensor unit 14 and the environment sensor unit 30 are connected to the main body 12 in a connected state, or the black ball sensor unit 14 and the environment sensor unit 30 are connected. Various modes are possible, such as connecting to the main body 12 or connecting one or both of the black ball sensor unit 14 and the environment sensor unit 30 via a connecting cable. Therefore, the degree of freedom in arranging the black globe sensor unit 14 is further increased, so that the measurement can be performed in a more appropriate environment.

The above-described embodiment has been described as an example of the temperature / humidity sensor that measures both temperature and humidity as an example of the environment sensor 30, but the present invention is not limited to this, and the temperature sensor and humidity that measure the temperature are not limited thereto. Humidity sensors for measuring the temperature may be provided separately. In the heat stroke index meter 70 shown in FIG. 9, a temperature sensor unit 72 and a humidity sensor unit 74 are each detachably provided with respect to the main body 12. The temperature sensor unit 72 includes a temperature sensor (not shown) inside, and a connector unit 73 on the upper surface. The humidity sensor unit 74 includes a humidity sensor (not shown) inside, and a connector unit 75 on the upper surface. The two connector portions 73 and 75 have the same structure and can be connected to any of the connector portions 76 and 77 provided on the lower surface of the main body 12. Further, the connector portions 73 and 75 and the connector portions 76 and 77 can also be connected by using a connecting cable (not shown). Therefore, even when the temperature sensor unit 72 and the humidity sensor unit 74 are separated from the main body 12, the temperature data and the humidity data can be sent to the control unit in the main body 12. In the heat stroke index meter 70 configured in this way, the temperature sensor unit 72 and the humidity sensor unit 74 can be arranged at appropriate positions, respectively.

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, an index of influenza. It can also be applied to devices that display the dryness index.

10 ... Heat stroke index meter, 12 ... Main body, 13 ... Casing, 14 ... Black ball sensor part, 15 ... Black ball, 16 ... Arm part, 18 ... Screen, 20 ... Operation buttons, 22 ... Belt, 24 ... Hole, 26 ... Connector part, 30 ... Environmental sensor part, 31 ... Small casing, 32 ... Connector part, 34 ... Connecting cable, 36 ... Connector part, 38 ... Connector part, 40 ... Heat stroke index meter, 42 ... Winding reel, 44 ... Cord, 50 ... Heat illness index meter, 52 ... Connector part, 54 ... Connector part, 60 ... Heat illness index meter, 61 ... Connector part, 62 ... Connector part, 63 ... Connector part, 64 ... Connector part, 65 ... Connector part , 70 ... Heat stroke index meter, 72 ... Temperature sensor unit, 73 ... Connector unit, 74 ... Humidity sensor unit, 75 ... Connector unit, 76 ... Connector unit, 77 ... Connector unit

Claims (6)

A black ball sensor unit that measures the temperature inside a substantially spherical black ball, an environment sensor unit that measures at least temperature or humidity, and a control that calculates an index based on the measured values of the black ball sensor unit and the environment sensor unit. In a portable environment measuring device provided with a unit and a main body containing the control unit.
The environment sensor unit is removable from the main body and is removable.
The control unit is a portable environment measurement device, characterized in that the index is calculated based on the measured value of the environment sensor unit regardless of the detached state of the environment sensor unit and the main body. The environment sensor unit and the main body each have a connector portion, and the environment sensor portion and the main body are connected via the two connector portions, and the connector portions connected to the two connector portions are connected to both ends. The portable environment measuring device according to claim 1, wherein the environment sensor unit and the main body are connected to each other via a cable. The morphological environment measuring device according to claim 1, wherein the environment sensor unit is connected via a take-up cable or a telescopic cable provided in the main body. The portable environment measuring device according to claim 1, further comprising a wireless communication means for wirelessly communicating the environment sensor unit and the main body. The black ball sensor unit is removable from the main body and is removable.
Any of claims 1 to 4, wherein the control unit calculates the index based on the measured value of the black ball sensor unit regardless of the detached state of the black ball sensor unit and the main body. The portable environment measuring device according to 1. A black ball sensor unit that measures the temperature inside a substantially spherical black ball, an environment sensor unit that measures at least temperature or humidity, and a control that calculates an index based on the measured values of the black ball sensor unit and the environment sensor unit. In a portable environment measuring device provided with a unit and a main body containing the control unit.
The black ball sensor unit is removable from the main body and is removable.
The control unit is a portable environment measuring device, characterized in that the index is calculated based on the measured value of the black ball sensor unit regardless of the detached state of the black ball sensor unit and the main body.

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