CN113243893A - Defecation frequency detection device and method - Google Patents
Defecation frequency detection device and method Download PDFInfo
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- CN113243893A CN113243893A CN202110798520.1A CN202110798520A CN113243893A CN 113243893 A CN113243893 A CN 113243893A CN 202110798520 A CN202110798520 A CN 202110798520A CN 113243893 A CN113243893 A CN 113243893A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
- A61B5/4255—Intestines, colon or appendix
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/08—Design features of general application for actuating the drive
- G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
- G06M1/101—Design features of general application for actuating the drive by electric or magnetic means by electro-optical means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/20—Movements or behaviour, e.g. gesture recognition
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to the technical field of human health detection, and discloses a defecation frequency detection device and a defecation frequency detection method, which comprise a human body detection unit, a control unit, a wireless data transmission unit and a power supply unit, wherein the power supply unit respectively supplies power to the human body detection unit, the control unit and the wireless data transmission unit, the human body detection unit sends a detection signal to the control unit when detecting a human body, the control unit calculates the defecation frequency according to the detection signal, the control unit sends the defecation frequency to a client through the wireless data transmission unit, the defecation frequency detection device is installed in a toilet when in actual use, whether people are at defecation places such as a closestool and the like can be detected through the human body detection unit, the control unit can acquire the daily defecation condition of a left-behind old man according to the detection signal sent by the human body detection unit and can remotely send the daily defecation condition of the left-behind old man to the client such as a mobile phone APP of a child and the like through the wireless data transmission unit, the children and the overseas workers can know the physical conditions of the parents in time.
Description
Technical Field
The invention relates to the technical field of human health detection, in particular to a defecation frequency detection device and a defecation frequency detection method.
Background
In the statistics of global cancers, digestive tract tumors account for the second place of the global tumor incidence, 90 new cases occur every year, 17 new cases die, and most of the cases are more than 50 years old, which seriously affects the health of the old. One manifestation of tumors of the digestive tract in humans is an increase in the number of bowel movements. Normally, the number of defecation times per day of an adult is less than three, and if a person suffers from digestive tract tumor, the number of defecation times per day of the patient exceeds three, so that the abnormality can be timely found by monitoring the number of defecation times of the person. At present, the old people are kept in counties and cities of villages, three-line cities, four-line cities and the like in the social structure of China, and children of the old people kept in the counties and the cities work outside and cannot know the physical conditions of parents in time.
Disclosure of Invention
In view of the defects of the background art, the invention provides the defecation frequency detection device and the defecation frequency detection method, when the detection device is deployed in a toilet, the daily defecation condition of the left-behind elderly can be monitored, and the children and the exorcisers can know the physical conditions of the parents in time.
In order to solve the technical problems, the invention provides the following technical scheme: a defecation frequency detection device comprises a human body detection unit, a control unit, a wireless data transmission unit and a power supply unit, wherein the power supply unit supplies power to the human body detection unit, the control unit and the wireless data transmission unit respectively, the human body detection unit sends a detection signal to the control unit when detecting a human body, the control unit calculates the defecation frequency according to the detection signal, and the control unit sends the defecation frequency to a client through the wireless data transmission unit.
In one embodiment, the present invention further comprises a display unit, and the control unit is electrically connected to the display unit.
In a certain embodiment, the human body detection unit comprises a power adjustment unit, an infrared emission unit and an infrared receiving unit, the control unit emits an infrared signal through the infrared emission unit, and the control unit receives the infrared signal reflected from the human body through the infrared receiving unit; the power adjusting unit is used for adjusting the power of the infrared signal emitted by the infrared emission unit.
In one embodiment, the human body detection unit includes a camera electrically connected to the control unit.
In a certain embodiment, the wireless data transmission unit is a 2G module, a 3G module, a 4G module, or a 5G module, and the wireless data transmission unit is further electrically connected with an antenna.
In one embodiment, the power supply unit includes a battery, a USB interface and a battery management unit, the USB interface is electrically connected to the control unit, and the USB interface is electrically connected to the battery through the battery management unit.
A defecation frequency detection method is applied to the defecation frequency detection device and comprises the following steps:
s1: detecting whether a person is at a defecation part or not through the human body detection unit, and if so, sending a detection signal to the control unit by the human body detection unit;
s2: the control unit counts the defecation times of the person according to the received detection signal;
s3: the control unit sends the defecation times of the person to the client through the wireless data transmission unit.
In one embodiment, when the human body detecting unit includes a power adjusting unit, an infrared transmitting unit and an infrared receiving unit, the process of the human body detecting unit detecting whether there is defecation is as follows in step S1: the control unit transmits an infrared signal through the infrared transmitting unit, when a person defecates, the infrared receiving unit receives the infrared signal reflected from the person and sends a detection signal to the control unit, and in addition, the power of the infrared signal transmitted by the infrared transmitting unit can be adjusted through the power adjusting unit, so that the transmitting distance of the infrared signal is between the infrared transmitting unit and the defecating position;
when the human body detecting unit includes a camera, the control unit detects whether a person defecates at the defecation part according to image information photographed by the camera in step S1;
when the human body detecting unit includes the radar, the human body detecting unit detects whether there is a person at the defecation part in step S1 by the control unit transmitting an electromagnetic wave to the defecation part by the radar, the control unit calculating a distance between the radar and a reflection point of the electromagnetic wave based on the reflected electromagnetic wave, and if the distance between the radar and the reflection point is within a prescribed distance, the defecation part has a person, the prescribed distance being a distance between the radar and the person at the defecation part.
In one embodiment, in step S2, when the control unit receives the detection signal transmitted by the infrared receiving unit, the control unit performs a delay filtering process, after the delay time elapses, if the infrared receiving unit still transmits the detection signal to the control unit, the control unit adds one to the defecation frequency and uses the current time as a defecation start time, after the defecation start time is obtained, the control unit uses the time point at which the infrared receiving unit stops transmitting the detection signal as a defecation end time, and the control unit calculates the total defecation time according to the defecation end time and the defecation start time;
in step S2, when the control unit detects a person at the defecation part via the camera, the control unit performs delay filtering processing first, after the delay time elapses, if the control unit still detects a person at the defecation part via the camera, the control unit adds one to the defecation frequency and takes the current time as the defecation starting time, after the control unit obtains the defecation starting time, the control unit takes the time point at which the camera detects that a person is not at the defecation part as the defecation ending time, and the control unit calculates the total defecation time according to the defecation ending time and the defecation starting time;
in step S2, after the control unit calculates that the distance between the radar and the reflection point is within the predetermined distance according to the detection signal sent by the radar, the control unit first performs delay filtering, and after the delay time expires, if the control unit calculates that the distance between the radar and the reflection point is still within the predetermined distance according to the detection signal sent by the radar, the control unit adds one to the defecation frequency and takes the current time as a defecation start time, and after the defecation start time, the control unit takes a time point at which the distance between the radar and the reflection point is no longer within the predetermined distance as a defecation end time, and the control unit calculates the total defecation time according to the defecation end time and the defecation start time.
In one embodiment, the control unit transmits the number of stools, the start time of each stool, the end time of each stool, and the total time of the stool to the client through the wireless data transmission unit in step S3.
Compared with the prior art, the invention has the beneficial effects that:
1: when the detection device is installed in a toilet, whether people are in defecation positions such as a toilet can be detected through the human body detection unit, the control unit can acquire daily defecation conditions of the left-behind elderly according to detection signals sent by the human body detection unit, and the daily defecation conditions of the left-behind elderly can be remotely sent to clients such as mobile phone APP of children through the wireless data transmission unit.
2: whether human detection unit detects defecation department through infrared mode has the people, can adjust the power of the infrared signal of infrared emission unit transmission through power adjusting unit, and then adjust infrared signal's transmission distance, make only people squat or just can receive the infrared signal of following reflection on the person when sitting on the closestool, avoid calculating the people from the condition of closestool process as the number of times of defecation, control unit carries out time delay filtering process after receiving the detection that infrared receiving unit sent in addition, avoid calculating the mosquito, the worm from the condition of infrared signal's transmission path process as the number of times of defecation, ensure the accuracy that the defecation detected.
Drawings
FIG. 1 is a structural view of a defecation number detection device in an embodiment;
FIG. 2 is a structural diagram of a defecation frequency detection device with an infrared detection mode adopted by a human body detection unit;
FIG. 3 is a structural view of a defecation frequency checking device in which a human body detection unit adopts a camera for detection;
FIG. 4 is a structural view of a defecation frequency detection device in which a human body detection unit detects by using a radar;
FIG. 5 is a flow chart of a defecation time detection method of the present invention;
fig. 6 is a circuit diagram of an infrared emission unit and a power adjustment unit in the embodiment;
fig. 7 is a circuit diagram of an infrared receiving unit in the embodiment;
fig. 8 is a circuit diagram of a control unit and a wireless data transmission unit in the embodiment.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in figure 1, a special defecation frequency detection device comprises a human body detection unit 2, a control unit 1, a wireless data transmission unit 3, a power supply unit 4 and a display unit 5, wherein the power supply unit 4 respectively supplies power to the human body detection unit 2, the control unit 1 and the wireless data transmission unit 3, the human body detection unit 2 sends a detection signal to the control unit 1 when detecting a human body, the control unit 1 calculates defecation frequency according to the detection signal, the control unit 1 sends the defecation frequency to a client through the wireless data transmission unit 3, and after the human body detection unit 2 detects the human body, the control unit 1 drives the display unit 5 to give a bright prompt.
As shown in fig. 2, the human body detecting unit 2 of the defecation frequency detecting device in fig. 2 includes a power adjusting unit, an infrared transmitting unit and an infrared receiving unit, the control unit 1 is electrically connected with the power adjusting unit, the power adjusting unit is electrically connected with the infrared transmitting unit, the control unit 1 is electrically connected with the infrared receiving unit, the control unit 1 transmits an infrared signal through the infrared transmitting unit, and the control unit 1 receives the infrared signal reflected from the human body through the infrared receiving unit; the power adjusting unit is used for adjusting the power of the infrared signal emitted by the infrared emission unit.
In practical use, when the infrared receiving unit detects a reflected infrared signal, the infrared receiving unit inputs detection data to the control unit 1, and the control unit 1 counts defecation times according to the detection data to realize defecation time detection of the old at home.
Referring to fig. 6, in practical use, the power adjusting unit may be a potentiometer U2, the infrared emitting unit may be an infrared emitter U4 of type SEL533-04, and the infrared emitter U4 may emit an infrared signal with a frequency of 38 KHz. Referring to fig. 7, the infrared receiving unit may adopt an infrared receiving head U3 with model R903V1-7C, and the infrared receiving head U7 may demodulate the 38KHz signal into a single pulse signal to be transmitted to the control unit. The potentiometer U2 is connected with the infrared emission head U4 in series, the emission power of the infrared emission head can be changed by adjusting the resistance value of the potentiometer U2, and the infrared emission distance of the infrared emission head is adjusted. In one embodiment, the IR emitting head has an IR emitting distance just between the IR emitting head and the bowel movement. Referring to fig. 8, the control unit includes a single chip microcomputer with model number STM32F103C8T6, and the wireless data transmission unit adopts a communication module with model number SM7600 CE.
As shown in fig. 3, the human body detecting unit 2 of the defecation frequency detecting device in fig. 3 is a camera, the camera is electrically connected with the control unit 1, and the control unit 1 detects whether a person is in the defecation part through the camera.
As shown in fig. 4, the human body detecting unit 2 of the defecation frequency detecting device in fig. 4 is a radar, the control unit 1 transmits electromagnetic waves to the defecation part by the radar, the control unit 1 calculates the distance between the radar and the reflection point of the electromagnetic waves according to the reflected electromagnetic waves, if the distance between the radar and the reflection point is within a prescribed distance, the defecation part has a person, and the prescribed distance is the distance between the radar and the person on the defecation part.
In the defecation frequency detection device in fig. 1 to 4, the control unit 1 may be a single chip microcomputer of the model STM32F103C8T6, and in actual use, controllers having an arithmetic processing function, such as other models of single chip microcomputers, FPGAs, or CPUs, can be understood as the control unit in the present invention.
In the defecation time detection device in fig. 1 to fig. 4, the wireless data transmission unit 3 may adopt a 2G, 3G, 4G or 5G module, and optionally, the wireless data transmission unit 3 selects a 4G module with a model of sim7600 to transmit and receive 4G signals. In addition, the signal transmitting and receiving end of the wireless data transmission unit is also electrically connected with an antenna.
In the defecation frequency detection device of fig. 1 to 4, the power supply unit includes a battery, a USB interface and a battery management unit, the USB interface is electrically connected with the control unit 1, and the USB interface is electrically connected with the battery through the battery management unit. The control unit 1 may interact via a USB interface. In addition, the battery can be charged through the USB interface, and the battery management unit controls and manages the charging voltage, the charging current, the discharging voltage and the discharging current of the battery. Specifically, the battery management unit may employ a battery management chip and peripheral circuits thereof.
As shown in fig. 5, a defecation frequency detection method applied to the defecation frequency detection device comprises the following steps:
s1: detecting whether a person is at a defecation part or not through the human body detection unit, and if so, sending a detection signal to the control unit by the human body detection unit;
s2: the control unit counts the defecation times of the person according to the received detection signal;
s3: the control unit sends the defecation times of the person to the client through the wireless data transmission unit.
When the defecation frequency detection method of the invention is applied to the defecation frequency detection device shown in fig. 2, the process of the human body detection unit detecting whether or not there is defecation by the human body detection unit in step S1 is as follows: the control unit 1 firstly transmits infrared signals through the infrared transmitting unit, when a person defecates, the infrared receiving unit can receive the infrared signals reflected from the person and send detection signals to the control unit 1, and in addition, the power of the infrared signals transmitted by the infrared transmitting unit can be adjusted through the power adjusting unit, so that the transmitting distance of the infrared signals is between the infrared transmitting unit and the defecating position. In step S2, when the control unit 1 receives the detection signal transmitted by the infrared receiving unit, the control unit 1 performs delay filtering, after the delay time elapses, if the infrared receiving unit still transmits the detection signal to the control unit 1, the control unit 1 adds one to the defecation frequency and uses the current time as the defecation start time, after the defecation start time is obtained by the control unit 1, the time point at which the infrared receiving unit stops transmitting the detection signal is used as the defecation end time, and the control unit 1 calculates the total defecation time according to the defecation end time and the defecation start time.
When the defecation time detection method of the invention is applied to the defecation time detection device shown in fig. 3, in step S1, the control unit 1 detects whether a person defecates at the defecation part according to the image information shot by the camera; in step S2, when the control unit 1 detects that there is a person at the defecation part via the camera, the control unit 1 performs delay filtering processing, after the delay time elapses, if the control unit 1 still detects that there is a person at the defecation part via the camera, the control unit adds one to the defecation frequency and takes the current time as the defecation start time, after the control unit 1 obtains the defecation start time, the control unit 1 takes the time point at which the camera detects that there is no person at the defecation part as the defecation end time, and the control unit 1 calculates the total defecation time according to the defecation end time and the defecation start time.
When the defecation frequency detection method of the invention uses the defecation frequency detection device shown in fig. 4, the human body detection unit in step S1 detects whether a person is at the defecation part by transmitting electromagnetic waves to the defecation part by the radar, the control unit 1 calculates the distance between the radar and the reflection point of the electromagnetic waves according to the reflected electromagnetic waves, and if the distance between the radar and the reflection point is within the specified distance, the defecation part has a person, and the specified distance is the distance between the radar and the person at the defecation part. In step S2, after the control unit calculates that the distance between the radar and the reflection point is within the predetermined distance according to the detection signal sent by the radar, the control unit performs delay filtering, and after the delay time expires, if the control unit calculates that the distance between the radar and the reflection point is still within the predetermined distance according to the detection signal sent by the radar, the control unit adds one to the defecation frequency and takes the current time as a defecation start time, and after the defecation start time, the control unit takes a time point at which the distance between the radar and the reflection point is not within the predetermined distance as a defecation end time, and the control unit calculates the total defecation time according to the defecation end time and the defecation start time.
In step S3, the control unit 1 transmits the number of times of defecation, the defecation start time each time, the defecation end time each time, and the total defecation time to the client through the wireless data transmission unit 3. In actual use, the control unit can send the defecation condition of the left-behind elderly people in one day to the client at the same time point every day, or send the defecation condition of the left-behind elderly people in each day to the client in a table form at a certain interval on the basis of sending every day, and in addition, when the defecation condition of the left-behind elderly people in one day or multiple days in the period is abnormal, the control unit 1 can mark the number of days with abnormality and send the days with abnormality to the client. The client may be a mobile phone APP.
In conclusion, the invention has the following beneficial effects:
1: when the detection device is installed in a toilet, whether people are at defecation parts such as a toilet or not can be detected through the human body detection unit 2, the control unit 1 can acquire daily defecation conditions of the left-behind elderly according to detection signals sent by the human body detection unit 2, and the daily defecation conditions of the left-behind elderly can be remotely sent to clients such as mobile phone APP of children through the wireless data transmission unit 3.
2: when human detection unit 2 detects whether someone is located at the defecation part through infrared mode, the power of the infrared signal that infrared emission unit transmitted can be adjusted through power adjustment unit, and then adjust the transmission distance of infrared signal, make only people squat or just can receive the infrared signal of following reflection on the person by infrared receiving unit when sitting on the closestool, avoid calculating the people from the condition of closestool process as the defecation number of times, control unit 1 carries out time delay filtering after receiving the detection that infrared receiving unit sent in addition, avoid calculating the mosquito, the worm from the condition of infrared signal's transmission path process as the defecation number of times, ensure the accuracy that the defecation detected.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A defecation frequency detection device is characterized in that: the defecation device comprises a human body detection unit, a control unit, a wireless data transmission unit and a power supply unit, wherein the power supply unit supplies power to the human body detection unit, the control unit and the wireless data transmission unit respectively, the human body detection unit sends a detection signal to the control unit when detecting a human body, the control unit calculates defecation times according to the detection signal, and the control unit sends the defecation times to a client through the wireless data transmission unit.
2. A defecation number detection device according to claim 1, characterized in that: the display device further comprises a display unit, and the control unit is electrically connected with the display unit.
3. A defecation number detection device according to claim 1 or 2, characterized in that: the human body detection unit comprises a power regulation unit, an infrared emission unit and an infrared receiving unit, the control unit emits infrared signals through the infrared emission unit, and the control unit receives the infrared signals reflected from the human body through the infrared receiving unit; the power adjusting unit is used for adjusting the power of the infrared signal emitted by the infrared emission unit.
4. A defecation number detection device according to claim 1 or 2, characterized in that: the human body detection unit comprises a camera, and the camera is electrically connected with the control unit.
5. A defecation number detection device according to claim 1, characterized in that: the wireless data transmission unit is a 2G module, a 3G module, a 4G module or a 5G module, and the wireless data transmission unit is further electrically connected with an antenna.
6. A defecation number detection device according to claim 1, characterized in that: the power supply unit comprises a battery, a USB interface and a battery management unit, the USB interface is electrically connected with the control unit, and the USB interface is electrically connected with the battery through the battery management unit.
7. In a defecation frequency detection method applied to the defecation frequency detection device according to any one of claims 1 to 6, the defecation frequency detection method is characterized by comprising the following steps:
s1: detecting whether a person is at a defecation part or not through the human body detection unit, and if so, sending a detection signal to the control unit by the human body detection unit;
s2: the control unit counts the defecation times of the person according to the received detection signal;
s3: the control unit sends the defecation times of the person to the client through the wireless data transmission unit.
8. A defecation number detection method according to claim 7, characterized in that: when the human body detecting unit includes the power adjusting unit, the infrared transmitting unit, and the infrared receiving unit, the process of the human body detecting unit detecting whether there is a human defecation in step S1 is as follows: the control unit transmits an infrared signal through the infrared transmitting unit, when a person defecates, the infrared receiving unit receives the infrared signal reflected from the person and sends a detection signal to the control unit, and in addition, the power of the infrared signal transmitted by the infrared transmitting unit can be adjusted through the power adjusting unit, so that the transmitting distance of the infrared signal is between the infrared transmitting unit and the defecating position;
when the human body detecting unit includes a camera, the control unit detects whether a person defecates at the defecation part according to image information photographed by the camera in step S1;
when the human body detecting unit includes the radar, the human body detecting unit detects whether there is a person at the defecation part in step S1 by the control unit transmitting an electromagnetic wave to the defecation part by the radar, the control unit calculating a distance between the radar and a reflection point of the electromagnetic wave based on the reflected electromagnetic wave, and if the distance between the radar and the reflection point is within a prescribed distance, the defecation part has a person, the prescribed distance being a distance between the radar and the person at the defecation part.
9. A defecation number detection method according to claim 8, characterized in that:
in step S2, when the control unit receives the detection signal transmitted by the infrared receiving unit, the control unit performs delay filtering processing, after the delay time elapses, if the infrared receiving unit still transmits the detection signal to the control unit, the control unit adds one to the defecation frequency and takes the current time as the defecation start time, after the defecation start time is obtained by the control unit, the control unit takes the time point at which the infrared receiving unit stops transmitting the detection signal as the defecation end time, and the control unit calculates the total defecation time according to the defecation end time and the defecation start time;
in step S2, when the control unit detects a person at the defecation part via the camera, the control unit performs delay filtering processing first, after the delay time elapses, if the control unit still detects a person at the defecation part via the camera, the control unit adds one to the defecation frequency and takes the current time as the defecation starting time, after the control unit obtains the defecation starting time, the control unit takes the time point at which the camera detects that a person is not at the defecation part as the defecation ending time, and the control unit calculates the total defecation time according to the defecation ending time and the defecation starting time;
in step S2, after the control unit calculates that the distance between the radar and the reflection point is within the predetermined distance according to the detection signal sent by the radar, the control unit performs delay filtering, and after the delay time expires, if the control unit calculates that the distance between the radar and the reflection point is still within the predetermined distance according to the detection signal sent by the radar, the control unit adds one to the defecation frequency and takes the current time as a defecation start time, and after the defecation start time, the control unit takes a time point at which the distance between the radar and the reflection point is not within the predetermined distance as a defecation end time, and the control unit calculates the total defecation time according to the defecation end time and the defecation start time.
10. A defecation number detection method according to claim 9, characterized in that: in step S3, the control unit transmits the defecation number, the defecation start time, the defecation end time and the total defecation time to the client through the wireless data transmission unit.
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