Baby carriage with bed-wetting reminding function

Abstract

The invention relates to a baby carriage with a bed-wetting reminding function, which comprises a base and a handle, and is characterized in that the base is provided with a microwave humidity sensor used for detecting a real-time humidity value above the base and outputting a humidity signal with the real-time humidity value; the pressure sensor is used for detecting a real-time pressure value above the base and outputting a pressure signal; the signal sending unit is used for sending an alarm signal; the control unit is used for receiving the pressure signal and the humidity signal and controlling the humidity sensor to start, when a real-time pressure value exceeds a preset pressure threshold value, the microwave humidity sensor is controlled to start, and the control unit calculates a humidity change value within preset time according to a real-time humidity value; and when the humidity change value exceeds a preset humidity change threshold value, the signal sending unit is controlled to send out an alarm signal. The method has the technical effect of judging whether the baby is wetted or not under the condition that the baby is not contacted.

Description

Technical Field

[0001] The invention relates to the technical field of baby products, and in particular to a baby carriage with a bed-wetting reminder function. Background Art

[0002] As a tool for carrying babies, a baby stroller is one of the essential baby products for families with babies. In the prior art, there is a baby stroller that can detect the humidity in the basket through a humidity sensor to determine whether the baby has wet the bed, but the humidity sensor of the baby stroller is only for the case where the baby is not wearing a diaper. When the baby is wearing a diaper, it is impossible to determine the bedwetting situation. If the baby wets the diaper for a long time, the wet surface will contact the baby's skin, and the baby's skin is relatively delicate, which may increase the risk of allergies and cause symptoms such as redness, itching, and rash on the baby's buttocks. The prior art also discloses a baby bed, which can insert a humidity detection probe into the diaper when the baby is wearing a diaper, so as to determine whether the diaper is wet, but because the probe needs to be placed in the diaper, the probe may contact the baby's skin and cause discomfort to the baby. Summary of the invention

[0003] The purpose of the present invention is to provide a baby stroller with a bed-wetting reminder function, which can determine whether a baby has wet the bed in a non-contact manner.

[0004] The above-mentioned object of the present invention is achieved through the following technical solutions: A baby stroller with a bed-wetting reminder function comprises a base and a handle, wherein the base is provided with: a microwave humidity sensor for detecting a real-time humidity value above the base and outputting a humidity signal having the real-time humidity value; a pressure sensor for detecting a real-time pressure value above the base and outputting a pressure signal; a signal sending unit for sending an alarm signal; and a control unit for receiving the pressure signal and the humidity signal, and controlling the humidity sensor to start, when the real-time pressure value exceeds a preset pressure threshold, controlling the microwave humidity sensor to start, the control unit calculating a humidity change value within a preset time according to the real-time humidity value, and when the humidity change value exceeds the preset humidity change threshold, controlling the signal sending unit to send an alarm signal.

[0005] The present invention is further configured to include a pyroelectric sensor for detecting the infrared intensity released by the human body and outputting an infrared signal. The controller also receives the infrared signal and controls the microwave humidity sensor to start when the infrared intensity exceeds a preset infrared threshold and the real-time pressure value exceeds a preset pressure threshold.

[0006] The present invention is further configured to include an alarm unit for receiving an alarm signal and issuing an alarm prompt.

[0007] The present invention is further configured as follows: the alarm unit includes a vibration motor and a sound generator, the alarm unit is arranged on the handle, and the alarm prompt is generated by the vibration of the motor or the sound of the sound generator.

[0008] The present invention is further configured as follows: the microwave humidity sensor, pressure sensor, signal sending unit, and control unit are arranged in a box body, the upper surface of the base is provided with a groove, the box body is embedded in the groove, and the probe of the pressure sensor extends out of the shell and is higher than the upper surface of the base.

[0009] The present invention is further configured as follows: slide grooves communicating with the groove are provided on both sides of the groove, the box body can slide in the slide grooves, and a gap for the pressure sensor to move is provided above the slide grooves.

[0010] The present invention is further configured as follows: the alarm unit is arranged in the shell, a slot is provided on the handle, and the shell is snap-connected in the slot.

[0011] The present invention is further configured as follows: a touch switch is provided on the shell, and when the touch switch is in a triggered state, the alarm unit generates an alarm prompt only through motor vibration, and when the touch switch is in an untriggered state, the alarm unit generates an alarm prompt only through sound from a sound generator.

[0012] The present invention is further configured as follows: the signal sending unit includes a short-range communication unit and a long-range communication unit, the short-range communication unit is used to send an alarm signal to the alarm unit, and the long-range communication unit is used to send an alarm signal to a mobile device.

[0013] The present invention is further configured such that: when the alarm unit receives the alarm signal, it sends a handshake signal; if the short-range communication unit does not receive the handshake signal, the long-range communication unit sends the alarm signal to the mobile device.

[0014] In summary, the beneficial technical effect of the present invention is: when the baby is located on the base, the pressure sensor detects the pressure, and the microwave humidity sensor is triggered to start, thereby performing contactless bed-wetting monitoring on the baby without affecting the baby's normal activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a system block diagram of the present application; Figure 2 It is a schematic diagram of the structure of the baby carriage of the present application; Figure 3 is a cross-sectional view of the base of the present application; Figure 4 It is a schematic diagram of the exploded structure of the handle and the shell.

[0016] In the figure, 1. base; 2. handle; 3. box body; 4. groove; 5. slide groove; 6. gap; 7. shell; 8. card slot; 9. touch switch; 10. pressure sensor. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-4 The present invention is described in further detail.

[0018] like Figure 1 As shown, the present application provides a baby stroller with a bed-wetting reminder function, including a microwave humidity sensor, a pressure sensor 10, a signal sending unit, a control unit and an alarm unit.

[0019] Among them, the microwave humidity sensor is used to detect the real-time humidity value above the base 1 and output a humidity signal with the real-time humidity value. The microwave humidity sensor is a sensor that uses radar detection technology to obtain the transmission or reflection (or secondary scattering) propagation information of the measured medium to a specific electromagnetic wave to determine the moisture content in the medium. The application of microwave radar to detect the moisture content of close-range or contact lossy media has the characteristics of fast, non-destructive, continuous detection, clear test results, and intuitive and convenient analysis and interpretation. In the embodiment of the present application, when the baby is wearing a diaper, the baby is placed on the base 1 of the basket, and the diaper is just above the microwave humidity sensor. The real-time humidity value detected by the microwave humidity sensor is the real-time humidity value of the diaper.

[0020] The pressure sensor 10 is used to detect the real-time pressure value above the base 1 and output a pressure signal. The function of the pressure sensor 10 is to determine whether there is an object with a certain weight above the microwave humidity sensor. Generally, a baby is carried in a baby carriage, so the pressure signal output by the pressure sensor 10 can be used to determine whether there is a baby.

[0021] The signal sending unit is used to send out an alarm signal, which can be presented in various ways such as sound, light, vibration, text information, etc.

[0022] The control unit is used to receive the pressure signal and the humidity signal, and control the humidity sensor to start. When the real-time pressure value exceeds the preset pressure threshold, the microwave humidity sensor is controlled to start. The control unit calculates the humidity change value within the preset time according to the real-time humidity value. When the humidity change value exceeds the preset humidity change threshold, the control signal sending unit sends an alarm signal. Generally speaking, in order to avoid the microwave humidity sensor being in an invalid working state for a long time when there is no baby in the basket, and the false alarm caused by the humidity signal output by the microwave humidity sensor in this case. Therefore, the judgment logic of the pressure value is set. When the real-time pressure value exceeds the preset pressure threshold, it can be judged that the baby is placed on the base 1 of the basket, and the microwave humidity sensor is turned on at this time. After the microwave humidity sensor is started, the real-time humidity value is detected at a certain frequency. The detection frequency here can be a fixed frequency or a variable frequency. When the humidity change is small, it is detected at a low frequency, and when it is large, it is detected at a high frequency. In this application, judging whether the baby is wet by the size relationship between the humidity change value and the humidity change threshold is more accurate than the comparison between the real-time humidity value and the humidity threshold. This is because the real-time humidity value is not only affected by the baby's urination, but also by the ambient humidity. When the ambient humidity is high, the ambient humidity may be higher than the humidity threshold, which may lead to misjudgment. By judging whether the baby is urinated by the humidity change value, the influence of the ambient humidity is eliminated when the ambient humidity remains basically unchanged under normal circumstances. However, this judgment also has certain defects. When the baby is already in a urinary state, the humidity change value will not change significantly and will not exceed the humidity change threshold, resulting in the inability to judge the urinary situation. However, if the baby is already urinated before being placed in the basket, it will be discovered if the baby is not wearing diapers under normal circumstances. However, the urination of the baby wearing diapers can also be discovered through changes in color bars or feel and quality. The technical solution of the present application mainly solves the problem of timely judgment of urinary conditions without active observation.

[0023] In another embodiment, a pyroelectric sensor is further included to detect the infrared intensity released by the human body and output an infrared signal. The controller also receives the infrared signal. When the infrared intensity exceeds a preset infrared threshold and the real-time pressure value exceeds a preset pressure threshold, the microwave humidity sensor is controlled to start. The pyroelectric sensor is a sensor that senses infrared radiation released by the human body. The human body temperature is generally 37 degrees, and infrared rays with a wavelength of about 10 microns are emitted. The temperature around the human body is generally lower than 37 degrees, which is greater than the infrared radiation wavelength of the human body. The pyroelectric sensor works by detecting changes in infrared radiation in the area. The baby in the basket is closer to the pyroelectric sensor than the person outside the stroller. Therefore, the infrared intensity of the baby detected by the pyroelectric sensor is higher. The sensitivity of the control unit to the judgment of the human body can be adjusted by adjusting the size of the infrared threshold to eliminate the interference of infrared radiation emitted by the human body outside the stroller. Through the dual judgment of the real-time pressure value and the infrared intensity, it is possible to avoid the misjudgment of triggering the microwave humidity sensor to start due to the placement of other objects in the basket causing the real-time pressure value to be higher than the pressure threshold. In some embodiments, the pyroelectric sensor can be in a working state for a long time, and then the pressure sensor 10 is triggered to start, and then the microwave humidity sensor is triggered to start. Alternatively, the pressure sensor 10 may be in a long-term working state, and then trigger the pyroelectric sensor, which in turn triggers the microwave humidity sensor to start.

[0024] In this embodiment, an alarm unit is also included, which is used to receive an alarm signal and issue an alarm prompt. In this embodiment, the alarm unit includes a vibration motor and a sound generator. The alarm unit is arranged on the handle 2, and the alarm prompt is generated by the vibration of the motor or the sound of the sound generator. The vibration of the motor occurs relative to the sound generator, which can reduce the disturbance to the baby and avoid waking up the sleeping baby. In some embodiments, the vibration of the motor and the sound of the sound generator can also be generated at the same time.

[0025] Reference Figure 2 and Figure 3 , the microwave humidity sensor, the pressure sensor 10, the signal sending unit, and the control unit are arranged in the box body 3. A groove 4 is provided on the upper surface of the base 1, and the box body 3 is embedded in the groove 4. The probe of the pressure sensor 10 extends out of the shell 7 and is higher than the upper surface of the base 1. Since the pressure sensor 10 needs to be subjected to force, the probe end of the pressure sensor 10 needs to be higher than the upper surface of the shell 7. A slide groove 5 communicating with the groove 4 is provided on both sides of the groove 4, and the box body 3 can slide in the slide groove 5. A gap 6 for the pressure sensor 10 to move is provided above the slide groove 5. Since the height of the baby is different and the position on the base 1 is different, if the box body 3 is in a fixed position on the base 1, it is not necessarily possible to adjust the position of the baby so that the diaper or the wet part is located directly above the box body 3. Therefore, a structure that allows the box body 3 to slide is provided on the base 1 to adapt to the different heights and positions of the baby. The lengths of the slide groove 5 and the gap 6 in the figure are only exemplary. In some embodiments, the slide groove 5 and the gap 6 can extend to both ends of the length direction of the base 1.

[0026] Reference Figure 2 and Figure 3 , the alarm unit is arranged in the shell 7, the handle 2 is provided with a card slot 8, and the shell 7 is connected to the card slot 8. A touch switch 9 is arranged on the shell 7. When the touch switch 9 is in the triggered state, the alarm unit only generates an alarm prompt through the motor vibration. When the touch switch 9 is in the untriggered state, the alarm unit only generates an alarm prompt through the sound of the sounder. When a person holds the touch switch 9 on the handle 2, the motor vibrates to remind the person, avoiding making a sound to wake up the baby when the baby is sleeping. The touch switch 9 is set at the habitual position when the person holds the handle 2 to ensure that the touch switch 9 can be touched when the person holds the handle 2. The shell 7 can also be slidably set on the handle 2 to adapt to the holding position habits of different people. When the touch switch 9 is not touched, it means that the person is away from the baby carriage, and a sound is made to remind the person.

[0027] In some embodiments, the signal sending unit includes a short-range communication unit and a long-range communication unit, the short-range communication unit is used to send an alarm signal to the alarm unit, and the long-range communication unit is used to send an alarm signal to the mobile device. Thus, the alarm unit can be notified to issue an alarm in the short range, or the mobile device can be notified through the long-range communication unit. The short-range communication can be Bluetooth, ZigBee, WiFi, etc. The long-range communication can be GPRS, CDMA, 4G, 5G and other mobile communications.

[0028] In some embodiments, the alarm unit sends a handshake signal when receiving the alarm signal. If the short-range communication unit does not receive the handshake signal, the long-range communication unit sends the alarm signal to the mobile device. The alarm unit sends a handshake signal, which indicates that the alarm unit has received the alarm signal and the alarm prompt of the alarm unit has been issued. When the alarm unit does not receive the handshake signal, it is sent to the mobile device through the long-range communication unit to avoid the situation of not being notified.

[0029] The baby carriage of the present application has a variety of usage scenarios. In the first usage scenario, the box body 3 and the shell 7 are both on the baby carriage, then the alarm signal of the box body 3 is sent to the shell 7, and the shell 7 issues an alarm prompt. In the second usage scenario, the box body 3 is on the baby carriage, and the shell 7 can be removed from the card slot 8 and carried on the body. Within the short-range communication range of the box body 3, an alarm prompt is issued by the shell 7 to avoid the situation where the guardian is away from the baby and does not pay attention to the sound of the shell 7 on the handle 2. In the third usage scenario, the box body 3 can be removed from the baby carriage. For example, when the baby is asleep in the bed, the box body 3 is placed under the diaper or wet part. At this time, if the shell 7 is removed from the handle 2 so that the shell 7 is within the short-range communication range of the box body 3, the shell 7 issues an alarm prompt, otherwise the mobile device issues an alarm prompt.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A baby stroller with a bed-wetting reminder function, comprising a base (1) and a handle (2), characterized in that: The base (1) is provided with: A microwave humidity sensor, used for detecting a real-time humidity value above the base (1) and outputting a humidity signal having the real-time humidity value; A pressure sensor (10) is used to detect a real-time pressure value above the base (1) and output a pressure signal; A signal sending unit, used for sending an alarm signal; and a control unit, for receiving the pressure signal and the humidity signal, and controlling the humidity sensor to start, when the real-time pressure value exceeds a preset pressure threshold, controlling the microwave humidity sensor to start, the control unit calculating the humidity change value within a preset time according to the real-time humidity value, when the humidity change value exceeds a preset humidity change threshold, controlling the signal sending unit to send an alarm signal.

2. The baby stroller with bedwetting reminder function as claimed in claim 1, characterized in that: It also includes a pyroelectric sensor for detecting the intensity of infrared rays released by the human body and outputting an infrared signal. The controller also receives the infrared signal and controls the microwave humidity sensor to start when the infrared intensity exceeds a preset infrared threshold and the real-time pressure value exceeds a preset pressure threshold.

3. The baby stroller with bedwetting reminder function as claimed in claim 1, characterized in that: It also includes an alarm unit for receiving alarm signals and issuing alarm prompts.

4. The baby stroller with bedwetting reminder function as claimed in claim 3, characterized in that: The alarm unit comprises a vibration motor and a sound generator. The alarm unit is arranged on the handle (2). The alarm prompt is generated by the vibration of the motor or the sound of the sound generator.

5. The baby stroller with bedwetting reminder function as claimed in claim 1, characterized in that: The microwave humidity sensor, the pressure sensor (10), the signal sending unit, and the control unit are arranged in a box body (3); a groove (4) is provided on the upper surface of the base (1); the box body (3) is embedded in the groove (4); and a probe of the pressure sensor (10) extends out of the housing (7) and is higher than the upper surface of the base (1).

6. The baby stroller with bedwetting reminder function as claimed in claim 6, characterized in that: Slide grooves (5) communicating with the groove (4) are provided on both sides of the groove (4), the box body (3) can slide in the slide grooves (5), and a gap (6) for the pressure sensor (10) to move is provided above the slide grooves (5).

7. The baby stroller with bedwetting reminder function as claimed in claim 4, characterized in that: The alarm unit is arranged in a housing (7), a card slot (8) is provided on the handle (2), and the housing (7) is card-engaged in the card slot (8).

8. The baby stroller with bedwetting reminder function as claimed in claim 7, characterized in that: The housing (7) is provided with a touch switch (9); when the touch switch (9) is in a triggered state, the alarm unit generates an alarm prompt only through motor vibration; when the touch switch (9) is in an untriggered state, the alarm unit generates an alarm prompt only through sound from a sound generator.

9. The baby stroller with bedwetting reminder function as claimed in claim 1, characterized in that: The signal sending unit includes a short-range communication unit and a long-range communication unit, wherein the short-range communication unit is used to send an alarm signal to an alarm unit, and the long-range communication unit is used to send an alarm signal to a mobile device.

10. The baby stroller with bedwetting reminder function as claimed in claim 9, characterized in that: The alarm unit sends a handshake signal when receiving the alarm signal, and if the short-range communication unit does not receive the handshake signal, the long-range communication unit sends an alarm signal to the mobile device.

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