Excrement determination method, excrement determination device, and non-transitory computer readable recording medium

1. A method for aiding in treating constipation by notifying a terminal of a caregiver or family member that a person suffers constipation, comprising:

detecting with a hydrogen-gas-concentration sensor sensing data indicating the concentration of hydrogen gas of flatulence from a toilet used by the person even when the flatulence is odorless;

capturing and recording with a camera an image of a bowl of the toilet used by the person and generating with the camera image data of the image of the toilet bowl;

acquiring with a hardware processor the sensing data of the concentration of the hydrogen gas of the flatulence from the toilet detected by the hydrogen-gas-concentration sensor;

acquiring with the hardware processor the image data captured by the camera;

determining with the hardware processor that the person is constipated by determining the presence of the odorless flatulence without the presence of a defecation product in the toilet bowl in response to receiving the sensing data representing a hydrogen gas concentration higher than a reference concentration, and image data from the camera indicating the absence of the defecation product in the toilet bowl; and

outputting to the terminal with the hardware processor the determination that the person is constipated to inform the caregiver or family member of the need to obtain constipation treatment for the person.

2. The method according to claim 1 , further comprising:

determining with the hardware processor that defecation occurred and flatulence was produced when the hardware processor determines that the hydrogen gas concentration is higher than the reference concentration and the image data contains an image of the defecation product.

3. The method according to claim 1 , wherein the hardware processor determines whether the image data includes an image of the defecation product when the hardware processor determines that the hydrogen gas concentration indicated by the sensing data is higher than the reference concentration.

4. The method according to claim 3 , further comprising:

detecting the concentration of ammonia gas from the toilet with an ammonia gas sensor;

detecting the concentration of hydrogen sulfide gas from the toilet with a hydrogen sulfide gas sensor; and

determining with the hardware processor, based on the ammonia concentration detected by the ammonia gas sensor and the hydrogen sulfide concentration detected by the hydrogen sulfide gas sensor, whether defecation or urination occurred in the toilet when the ammonia concentration detected by the ammonia gas sensor is equal to or lower than the reference concentration.

5. The method according to claim 3 , further comprising determining with the hardware processor, based on the image data, whether defecation or urination occurred in the toilet when the hardware processor determines that the hydrogen gas concentration detected by the hydrogen-gas-concentration sensor is equal to or lower than the reference concentration.

6. The method according to claim 1 , wherein the hardware processor determines the presence of the odorless flatulence without the presence of a defecation product in the toilet bowl when a sitting sensor for detecting sitting of the person on the toilet detects that the person sits on the toilet.

7. The method according to claim 1 , further comprising:

generating and outputting with the hardware processor excretion history information including a determination result, daily time information about a date and time when excretion occurred, and the hydrogen gas concentration, and storing with the hardware processor the excretion history information in a memory; and

determining with the hardware processor whether an increase rate of the hydrogen gas concentration indicated by the excretion history information is equal to or larger than a second threshold when the excretion history information stored in the memory indicates that a defecation interval is equal to or larger than a first threshold and indicates that the person produced flatulence continuously in the defecation interval, and determining with the hardware processor that the person has constipation when the hardware processor determines that the increase rate is equal to or larger than the second threshold.

8. The method according to claim 1 , further comprising:

generating with the hardware processor excretion history information including a determination that at least one of defecation and flatulence production has occurred, daily time information about a date and time when excretion occurred, and the hydrogen gas concentration, and storing with the hardware processor the excretion history information in a memory;

calculating with the hardware processor, based on the excretion history information stored in the memory, an increase rate of the hydrogen gas concentration, and determining with the hardware processor, based on whether the increase rate is equal to or larger than a threshold, a medication state of the person; and

outputting with the hardware processor a determination result of the medication state.

9. A device for aiding in treating constipation by notifying a terminal of a caregiver or family member that a person suffers constipation, comprising:

a hydrogen-gas-concentration sensor configured to detect the concentration of hydrogen gas of flatulence from a toilet even when the flatulence is odorless;

a camera configured to record an image of a bowl of the toilet and to generate image data of the image of the toilet bowl; and

a hardware processor configured to acquire sensing data from the hydrogen-gas-concentration sensor and to acquire the image data generated by camera, wherein

the hardware processor

determines the person is constipated by determining the presence of odorless flatulence without the presence of a defecation product in the toilet bowl in response to receiving sensing data representing a hydrogen gas concentration higher than a reference concentration and image data indicating the absence of the defecation product in the toilet bowl and

outputs to the terminal the determination that the person is constipated to inform the caregiver or family member of the need to obtain constipation treatment for the person.

10. A non-transitory computer-readable recording medium storing a program for causing a computer to:

acquire with a hardware processor sensing data of the concentration of hydrogen gas of odorless flatulence from a toilet produced by a person and detected by a hydrogen-gas-concentration sensor;

acquire with the hardware processor image data from a camera which is located at the toilet to capture an image of a bowl of the toilet;

determine with the hardware processor that the person is constipated by determining the presence of the odorless flatulence without the presence of a defecation product in the toilet bowl in response to

receiving sensing data from the hydrogen-gas-concentration sensor representing a hydrogen gas concentration higher than a reference concentration, and

image data from the camera indicating the absence of the defecation product in the toilet bowl; and

outputting to a terminal of a caregiver or family member of the person with the hardware processor the determination that the person is constipated to inform the caregiver or family member of the need to obtain constipation treatment for the person.