Perspiration amount measuring device and perspiration amount measuring system
Provided is a perspiration amount measuring device that includes: an air flow path through which inside air flows; a first thermo-hygro sensor that is disposed at a place opened to an external field, and measures a temperature and a relative humidity of outside air that is taken in from a place on a side opposite to the wearer as viewed from the air flow path; a fan that sucks the inside air in the air flow path and discharges the inside air to an outside of the perspiration amount measuring device; and a second thermo-hygro sensor that is disposed in a flow of the inside air generated due to an operation of the fan, and measures a temperature and a relative humidity of the inside air. The perspiration amount measuring device is mounted on an edge portion of a helmet, and can accurately measure a head perspiration amount.
1 . A perspiration amount measuring system configured to measure a perspiration amount from a head of a wearer, the perspiration amount measuring system comprising:
an outer shell configured to cover the head to form an air flow path therebetween, inside air flowing through the air flow path and containing vapor generated from the head, the outer shell being configured to shield the inside air from outside air existing in an external field of the outer shell;
a first thermo-hygro sensor disposed at a place opened to the external field, the first thermo-hygro sensor being configured to measure a temperature and a relative humidity of the outside air;
a fan configured to suck the inside air in the air flow path and discharge the inside air to the external field; and
a second thermo-hygro sensor disposed at a position through which the inside air flows due to an operation of the fan, the second thermo-hygro sensor being configured to measure a temperature and a relative humidity of the inside air.
2 . The perspiration amount measuring system according to claim 1 , further comprising a sensor cover that covers the first thermo-hygro sensor.
3 . The perspiration amount measuring system according claim 2 ,
wherein the sensor cover includes an outside air intake port and an outside air outlet port.
4 . The perspiration amount measuring system according to claim 3 ,
wherein the first thermo-hygro sensor is disposed in a space where a flow of the outside air is generated.
5 . The perspiration amount measuring system according to claim 4 , further comprising a shield member having a communicating portion between the air flow path and the space.
6 . The perspiration amount measuring system according to claim 5 ,
wherein the space is formed such that the outside air flows with a substantially constant flow amount adjacent to the first thermo-hygro sensor.
7 . The perspiration amount measuring system according to claim 6 ,
wherein the first thermo-hygro sensor is disposed adjacent to the communicating portion and disposed at an upstream position of the communication portion with respect to the flow of the outside air.
8 . The perspiration amount measuring system according to claim 6 ,
wherein the air flow path has a closed portion as a downstream end thereof, and the closed portion is located adjacent to the fan, and
the second thermo-hygro sensor is disposed adjacent to the fan.
9 . The perspiration amount measuring system according to claim 2 ,
wherein the air flow path has a closed portion as a downstream end thereof, and the closed portion is located adjacent to the fan, and
the second thermo-hygro sensor is disposed adjacent to the fan.
10 . The perspiration amount measuring system according to claim 2 ,
wherein the fan is disposed at a position where a discharge destination of air generated by the fan is in an area ranging from a back of the head to a back of a neck of the wearer while the outer shell covers the head.
11 . The perspiration amount measuring system according to claim 2 , further comprising:
a memory configured to store a program; and
a processor configured to execute the program so as to:
calculate a first moisture amount per unit volume as an inflow moisture, amount based on the temperature and the relative humidity of the outside air measured by the first thermo-hygro sensor;
calculate a second moisture amount per unit volume as an outflow moisture amount, amount based on the temperature and the relative humidity of the inside air measured by the second thermo-hygro sensor;
calculate the perspiration amount from the head based on the inflow moisture amount, the outflow moisture amount, and an air volume relating to discharging of the inside air by the fan; and
estimate a whole body perspiration amount of the wearer based on the perspiration amount from the head.
12 . The perspiration amount measuring system according to claim 1 ,
wherein the air flow path has a closed portion as a downstream end thereof, and the closed portion is located adjacent to the fan, and
the second thermo-hygro sensor is disposed adjacent to the fan.
13 . The perspiration amount measuring system according to claim 1 ,
wherein the fan is disposed at a position where a discharge destination of air generated by the fan is in an area ranging from a back of the head to a back of a neck of the wearer while the outer shell covers the head.
14 . The perspiration amount measuring system according to claim 1 , further comprising:
a memory configured to store a program; and
a processor configured to execute the program so as to:
calculate a first moisture amount per unit volume as an inflow moisture, amount based on the temperature and the relative humidity of the outside air measured by the first thermo-hygro sensor;
calculate a second moisture amount per unit volume as an outflow moisture amount based on the temperature and the relative humidity of the inside air measured by the second thermo-hygro sensor;
calculate the perspiration amount from the head based on the inflow moisture amount, the outflow moisture amount, and an air volume relating to discharging of the inside air by the fan; and
estimate a whole body perspiration amount of the wearer based on the perspiration amount from the head.
15 . A perspiration amount measuring device configured to measure a perspiration amount from a head of a wearer, the perspiration amount measuring device being attached at an edge of an outer shell, the outer shell configured to cover the head to form an air flow path therebetween, inside air flowing through the air flow path and containing vapor generated from the head, the outer shell being configured to shield the inside air from outside air existing in an external field of the outer shell, the perspiration amount measuring device comprising:
a first thermo-hygro sensor disposed at a place opened to the external field, the first thermo-hygro sensor being configured to measure a temperature and a relative humidity of the outside air;
a fan configured to suck the inside air in the air flow path and discharge the inside air to the external field; and
a second thermo-hygro sensor disposed at a position through which the inside air flows due to an operation of the fan, the second thermo-hygro sensor being configured to measure a temperature and a relative humidity of the inside air.
16 . The perspiration amount measuring device according to claim 15 , further comprising:
a memory configured to store a program; and
a processor configured to execute the program so as to:
calculate a first moisture amount per unit volume as an inflow moisture amount based on the temperature and the relative humidity of the outside air measured by the first thermo-hygro sensor;
calculate a second moisture amount per unit volume as an outflow moisture amount based on the temperature and the relative humidity of the inside air measured by the second thermo-hygro sensor;
calculate the perspiration amount from the head based on the inflow moisture amount, the outflow moisture amount, and an air volume relating to discharging of the inside air by the fan; and
estimate a whole body perspiration amount of the wearer based on the perspiration amount from the head.
17 . A perspiration amount measuring device configured to measure a perspiration amount from a head of a wearer, the perspiration amount measuring device comprising:
an air flow path through which inside air containing vapor generated from the head flows;
a first thermo-hygro sensor disposed at a place opened to an external field of the perspiration amount measuring device, the first thermo-hygro sensor being configured to measure a temperature and a relative humidity of outside air in the external field;
a shield member disposed between the air flow path and the external field, the shield member having a communicating portion through which the outside air flows;
a fan configured to:
suck the inside air in the air flow path and discharge the inside air to the external field; and
suck the outside air through the communicating portion of the shield member to generate a flow of the outside air to the first thermo-hygro sensor; and
a second thermo-hygro sensor disposed at a position through which the inside air flows due to an operation of the fan, the second thermo-hygro sensor being configured to measure a temperature and a relative humidity of the inside air.
18 . The perspiration amount measuring device according to claim 17 , further comprising:
a memory configured to store a program; and
a processor configured to execute the program so as to:
calculate a first moisture amount per unit volume as an inflow moisture amount based on the temperature and the relative humidity of the outside air measured by the first thermo-hygro sensor;
calculate a second moisture amount per unit volume as an outflow moisture amount based on the temperature and the relative humidity of the inside air measured by the second thermo-hygro sensor;
calculate the perspiration amount from the head based on the inflow moisture amount, the outflow moisture amount, and an air volume relating to discharging of the inside air by the fan; and
estimate a whole body perspiration amount of the wearer based on the perspiration amount from the head.