A smart baby crib system including an anti-kicking quilt intelligent detection module

Abstract

The present invention relates to an intelligent baby crib system including an anti-kicking quilt intelligent detection module, comprising an infrared detection unit and a control unit. The data collected by the infrared detection unit is transmitted through an I 2 The C bus is transmitted to the control unit, and the control unit analyzes the received data to obtain the real-time situation of infants and young children kicking the quilt in the current detection area. The purpose of the present invention is to use the infrared array sensor to sense the infrared output temperature difference image emitted by the object and the environment and send it to the control unit for analysis and processing, so as to accurately detect the situation of infants and young children kicking the quilt and the exposed area and movement state of the body through analysis.

Description

Technical Field

[0001] The present invention relates to the field of smart baby cribs, and in particular to a smart baby crib system comprising an anti-kicking quilt intelligent detection module. Background Art

[0002] Infants and young children are in the developmental stage, their nervous systems are not fully developed, and they are easily stimulated or overexcited before going to bed, which can easily lead to generalization and kicking of the quilt; sometimes the quilt is too thick or the clothes are too many, and the infants and young children are prone to sweating and sweating, which can also cause infants and young children to kick the quilt. Many parents need to take care of them frequently, but it is inevitable that they will be negligent. Therefore, infants and young children catching colds and getting sick due to kicking the quilt is a headache for many parents.

[0003] At present, the detection products and solutions for infants and young children kicking quilts on the market basically detect the temperature change of the quilt bed through infrared sensors or through specific infant bedding to detect the infants and young children kicking quilts. Since infants and young children need to wear special clothes, the behavior and activities of children are greatly restricted. In addition, ordinary sensors have a slow reaction time by detecting the temperature change and can only roughly detect whether the quilt is kicked. The accuracy is low and the false alarm rate is high, which cannot really solve the problem. The existing infant and young children kicking quilt detection system includes an infrared detection unit and a kicking quilt alarm unit. Most infrared detection units are composed of an infrared transmitting part and an infrared receiving part. The infrared transmitting unit includes a central processing unit and an infrared transmitting circuit connected to the central processing unit. The infrared transmitting circuit includes an infrared transmitting tube. The front end of the infrared transmitting tube is connected to two switch transistors. The two switch transistors are respectively connected to the two output ports of the central processing unit. The central processing unit controls the on and off of the two switch transistors according to the change of the level in the circuit; the infrared receiving part includes an infrared receiving circuit. The infrared receiving circuit is connected to the alarm unit. The infrared receiving circuit receives and detects the data sent by the infrared transmitting tube. When the data detection is correct, the infrared receiving circuit sends a start signal to the alarm unit.

[0004] Most of these products use the basic characteristics of infrared sensors to detect temperature changes inside the quilt. When the temperature drops to a certain threshold, a temperature difference is generated, thereby issuing an alarm message. This method is too rough, and temperature changes also require a period of reaction time. It is also easily affected by environmental factors and cannot distinguish between human body and non-human heat sources. Simple data collection and algorithm analysis cannot make accurate judgments, so the sensitivity and accuracy of the detection results are not high. Summary of the invention

[0005] The purpose of the present invention is to provide a thermopile infrared infant kicking quilt detection system, which can output a temperature difference image of infrared rays (heat rays) emitted by objects and the environment through an infrared array sensor and send it to a control unit for analysis and processing, so as to accurately detect the situation of infants kicking quilts, the exposed area of ​​the body and the movement state through analysis.

[0006] The present invention provides an intelligent baby crib system including an anti-kicking quilt intelligent detection module, including an infrared detection unit and a control unit. The data collected by the infrared detection unit is transmitted through an I 2 The C bus transmits the data to the control unit, which analyzes the received data to obtain the real-time situation of infants and young children kicking the quilt in the current detection area.

[0007] Furthermore, the infrared detection unit uses an infrared array sensor AMG8853.

[0008] Furthermore, the control unit uses STM32F030.

[0009] Furthermore, the infrared detection unit completes the detection of human body and regional temperature, collects 10 frames or 12 frames of image data of the detection area per second, and each frame of data is displayed in an 8*8 matrix, showing the absolute temperature distribution. The image data is transmitted to the control unit, and the control unit polls and analyzes the collected matrix data to realize the recognition of the human body and effectively distinguish between human and non-human heat sources. At the same time, it can detect the number and position of the human body in the field of view, as well as the posture and movement direction of the person in the field of view.

[0010] Furthermore, it also includes a lower rotating device, an upper rotating device, a vertical support rod, a horizontal support rod, a sliding adjustment switch, a matte light strip, a push button switch and an alarm unit. The horizontal support rod is arranged with an infrared detection unit, a control unit, a sliding adjustment switch and a matte light strip. One end of the horizontal support rod is connected to the upper rotating device and can be folded and stored. The vertical support rod is composed of a push button switch and an alarm unit. The upper end of the vertical support rod is connected to the lower rotating device and can be rotatably stored. The infrared detection unit, the sliding adjustment switch, the matte light strip, the push button switch, the control unit and the alarm unit exchange signals through plastic-sealed wires.

[0011] On the other hand, a detection method of a smart crib system including an anti-kicking quilt intelligent detection module comprises the following steps:

[0012] S1: Initialization state, start the kick-off detection function, wait for a period of time, the infrared detection unit collects data and the control unit analyzes it;

[0013] S2: Calculate the ambient temperature and non-ambient temperature;

[0014] S3: Analyze the collected data to obtain the exposed position of the baby's head and trunk, and obtain the baby's current sleeping position;

[0015] S4: Entering the monitoring state: detecting and collecting data at regular intervals, analyzing the collected data, judging the baby's state and movement, and distinguishing human and non-human heat sources through the calculated ambient temperature and non-ambient temperature;

[0016] S5: judging whether the baby turns over or moves according to the ambient temperature and non-ambient temperature as well as the baby's state and movement, and judging whether the baby kicks off the quilt according to the temperature difference detected before and after;

[0017] S6: When the quilt is kicked off, the counting starts, and then the detection is repeated. When the number of times reaches 10, the alarm is activated.

[0018] S7: Continuous alarm, waiting for the user to handle; after the user handles it, he covers the quilt and starts the detection button for kicking off the quilt;

[0019] S8: Return to step S1.

[0020] Furthermore, step S2 further includes the following steps:

[0021] S11: Find the maximum value, the minimum value and the difference through the collected frame data, and obtain the temperature in the current detection area;

[0022] S12: Obtain the difference between all values ​​in the frame data and the minimum value to obtain a new matrix, calculate the number of the smallest 5 values ​​in the new matrix, and then convert it into an ambient temperature value.

[0023] Furthermore, the process of calculating the non-ambient temperature and the current infant status includes the following steps:

[0024] When the kick-off detection starts, it will pause for 3 seconds for detection after starting the anti-kicking detection module, that is, to move the interference heat source out of the detection area, so that relatively stable matrix data can be obtained in the initialization stage.

[0025] S21: Detect the area with the highest temperature in the frame data. Because the sensor is more than 1 meter away from the bed, the detected heat source temperature is lower than the actual temperature, and the surrounding values ​​of the area with the highest temperature are higher than those of other areas. Calculate the temperature change curves at different positions in the matrix, and determine whether it is the baby's head by calculating the steepest slope change and the spatial area corresponding to the heat source.

[0026] S22: According to the information of the baby initially set by the user, the volume and position distribution of the baby are roughly calculated during the analysis process.

[0027] Furthermore, step S6 also includes the following steps: determining whether to alarm based on the alarm level and the temperature difference: the alarm level is divided into three levels, and the user can input the temperature difference level on the keyboard according to the seasonal conditions and weather temperature, and the control unit activates the corresponding alarm level based on the detected temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the smart baby crib system of the present invention;

[0029] Figure 2 It is a schematic diagram of the detection area of ​​the infrared array sensor of the present invention;

[0030] Figure 3 It is the principle diagram of the infrared array sensor of the present invention;

[0031] Figure 4 It is a partial schematic diagram of the control unit of the present invention;

[0032] Figure 5 The figure is a flow chart of the working method of the intelligent crib system of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0034] like Figure 1 As shown, a smart baby bed system including an anti-kicking quilt intelligent detection module includes a lower rotating device 1, an upper rotating device 2, a vertical support rod 3, a horizontal support rod 4, an infrared array sensor 5, a sliding adjustment switch 6, a matte light strip 7, a key switch 8, a control unit 9 and an alarm unit 10. The horizontal support rod 4 includes an infrared array sensor 5, a control unit 9, a sliding adjustment switch 6 and a matte light strip 7. One end of the horizontal support rod 4 is connected to the upper rotating device 2 and can be folded and stored. The vertical support rod 3 includes a key switch 8 and an alarm unit 10. The upper end of the vertical support rod 3 is connected to the upper rotating device 2, and the lower end is connected to the lower rotating device 1 and can be rotatably stored. The infrared array sensor 5, the sliding adjustment switch 6, the matte light strip 7, the key switch 8, the control unit 9 and the alarm unit 10 exchange signals through plastic-sealed wires. There are indicator lights on the device, and the mobile terminal receives alarm information through messages and voices.

[0035] The vertical support rod 3 and the horizontal support rod 4 are adjusted to the specified position by using the lower rotating device 1 and the upper rotating device 2. When the vertical support rod 3 and the horizontal support rod 4 are rotated to the specified position, there is a prompt sound inside the rotator, indicating that the rotator is in place, so that the vertical distance between the infrared array sensor 5 at the top of the horizontal support rod 4 and the bed board is 90cm-110cm, and its detection area is as follows: Figure 2 As shown, the infrared array sensor 5 and the control unit 9 are connected via I 2 C is connected, the schematic diagram is as follows Figure 3 and Figure 4 As shown, when the push button switch 8 is turned on, the control unit 9 will perform an algorithm analysis on the data collected by the infrared array sensor 5 to determine whether the infant has kicked off the quilt and the degree of exposure of the body. The sliding adjustment switch 6 can adjust the brightness of the matte light strip 7 by sliding operation. The light is soft and acts as a night light without affecting the child's sleep. When the control unit 9 analyzes and concludes that the current situation is kicking off the quilt, it will send an alarm signal to the alarm unit 10 and the APP of the mobile terminal, and the alarm unit 10 will give an alarm through flashing lights.

[0036] The core part of the present invention is divided into two parts, one is the infrared detection unit, which takes the infrared array sensor AMG8853 as the core, and the other is the control unit, which takes the STM32F030 as the core. The infrared detection unit adopts ceramic packaging, which makes it have good sealing performance and can achieve radio wave interference blocking, so as to obtain stable and reliable raw data. The data collected by the sensor is transmitted through I 2 C is transmitted to the control unit, which uses a specific algorithm to analyze and obtain the real-time situation of infants and young children kicking the quilt in the current detection area.

[0037] The existing infant kicking detection system mostly adopts focal or quantum infrared sensors, and the detection result can only be the temperature in a certain point area. The algorithm processing cannot distinguish between human body and non-human heat source, so the result obtained is easily interfered by the external environment, resulting in a high false alarm rate and slow reaction speed. The infrared array sensor (Grid-EYE AMG8853) adopted by the present invention can complete the detection of human body and regional temperature, and can collect 10 or 12 frames of image data of the detection area per second. Each frame of data is displayed in an 8*8 matrix, showing an absolute temperature distribution. By directly introducing the level signal into the MCU, the collected matrix data is polled and analyzed by the control unit (STM32F030), the recognition of the human body can be realized, and the human and non-human heat sources can be effectively distinguished. At the same time, the number and position of the human body in the viewing angle, as well as the posture and moving direction of the person in the viewing angle can be detected, effectively reducing the interference of the external environment, reducing the probability of false triggering, and accurately calculating the state and degree of infant kicking in the current detection area, with fast reaction speed and accurate detection results.

[0038] The analysis method of the present invention after collecting data through the infrared array sensor has more scientific and humane processing when dealing with the following two situations. First, as the age of infants and young children increases and their bodies develop, the distribution of heat sources in the detection area changes, which deviates from the detection method set at the factory, resulting in false alarms. At this time, parents can use the specified operation method to make the detection status more accurate, and only need to adjust it once when the error is more accurate; second, most baby beds on the market have a bottom plate lifting function, and the vertical height of the bed board from the sensor directly affects the area of ​​the detection area and the accuracy of the detection results. The present invention can adapt to different heights and adjust the size of the detection area, which can avoid underreporting or false alarms due to changes in the size of the detection area, thereby ensuring the accuracy of the detection results.

[0039] The following describes the process of the detection method:

[0040] The detection method based on the anti-kicking intelligent detection module includes the following steps:

[0041] S1: Start the initialization state, start the kick-off detection function, and wait for 3 seconds before collecting and analyzing;

[0042] S2: Calculate the ambient temperature and non-ambient temperature;

[0043] S3: Analyze the collected data to obtain the exposed position of the baby's head and trunk, and obtain the baby's current sleeping position;

[0044] S4: Entering the monitoring state: Detecting and collecting data every 1 second, analyzing the collected data, judging the baby's state and movement, and distinguishing human and non-human heat sources through the calculated ambient temperature and non-ambient temperature;

[0045] S5: judging whether the baby turns over or moves according to the ambient temperature and non-ambient temperature as well as the baby's state and movement, and judging whether the baby kicks off the quilt according to the temperature difference detected before and after;

[0046] S6: When the quilt is kicked off, the counting starts, and then the detection is repeated. When the number of times reaches 10, the alarm is activated.

[0047] S7: Continuous alarm, waiting for the user to handle; after the user handles it, he covers the quilt and starts the detection button for kicking off the quilt;

[0048] S8: Return to step S1.

[0049] Assume that the vertical distance between the current anti-kicking quilt intelligent detection module and the bed board is set to 110 cm, the original matrix data of 8*8 is recorded in the initialization phase, and the matrix data is adjusted to 6*8 in the detection phase. The physical detection space just covers the space occupied by the bed.

[0050] The process of calculating the ambient temperature is as follows:

[0051] S11: Obtain the temperature in the current detection area through the collected frame data;

[0052] For example: For the following frame data, find the maximum, minimum and difference values. Each value in the following table is equivalent to 0.25°C, max = 20.25°C, min = 14.25°C, difference = 6°C.

[0053] max:81,min:57

[0054]

[0055]

[0056] S12: Calculate the difference between all values ​​and the minimum value to get a new matrix. Calculate the number of the 5 smallest values ​​in the new matrix. The number is the weight, and then divide it by the total number. For example, there are 3 0s, 1 1, 4 2s, 6 3s, and 14 4s. Temperature = (2.9 + 57) * 0.25 = 14.9 ° C, that is, the current ambient temperature is roughly around 15 ° C.

[0057]

[0058] The process of calculating the non-ambient temperature and the current baby status is as follows:

[0059] When the kick-off detection starts, it will pause for 3 seconds for detection after starting the anti-kicking detection module, that is, to move the interference heat source out of the detection area, so that relatively stable matrix data can be obtained in the initialization stage.

[0060] S21: In the current detection area, the highest temperature value appears in the lower left corner of the table below. Because the sensor is more than 1m away from the bed, the detected heat source temperature is lower than the actual temperature, and the surrounding values ​​are higher than those in other areas. The temperature change curves at different positions in the matrix are calculated. The lower left corner shows the steepest slope change, and the spatial area corresponding to the heat source in the lower left corner is calculated to determine whether it is the baby's head. Considering the radiation area of ​​the infrared array sensor (Grid-EYEAMG8853), and combining the relationship between the collected data matrix and the detected area, the first and last rows of the 8*8 matrix are removed to form a 6*8 matrix.

[0061] start monitor fix i2c data! diff:15

[0062]

[0063]

[0064] S22: The user will set the baby's information on the APP. When the system starts, the baby's age is obtained. During the analysis process, the baby's size and location distribution are roughly calculated.

[0065] Determine whether to alarm based on the alarm level and temperature difference: the alarm level is divided into three levels. The user can input the temperature difference level on the keyboard according to the seasonal conditions and weather temperature. The control unit activates the corresponding alarm level based on the detected temperature difference.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection method for a smart crib system, comprising the following steps: S1: Initialization state, start the kick-quilt detection function, wait for a period of time, the infrared detection unit (5) collects data and the control unit (9) analyzes it; S2: Calculate the ambient temperature and non-ambient temperature; S3: Analyze the collected data to obtain the exposed position of the baby's head and trunk, and obtain the baby's current sleeping position; S4: Entering the monitoring state: detecting and collecting data at regular intervals, analyzing the collected data, judging the baby's state and movement, and distinguishing human and non-human heat sources through the calculated ambient temperature and non-ambient temperature; S5: judging whether the baby turns over or moves according to the ambient temperature and non-ambient temperature as well as the baby's state and movement, and judging whether the baby kicks off the quilt according to the temperature difference detected before and after; S6: When the quilt is kicked off, the counting starts, and then the detection is repeated. When the number of times reaches 10, the alarm is activated. S7: Continuous alarm, waiting for the user to handle; after the user handles it, he covers the quilt and starts the detection button for kicking off the quilt; S8: Return to step S1; Step S2 also includes the following steps: S11: Find the maximum value, the minimum value and the difference through the collected frame data, and obtain the temperature in the current detection area; S12: Obtain the difference between all values ​​in the frame data and the minimum value to obtain a new matrix, calculate the number of the smallest 5 values ​​in the new matrix, and then convert it into an ambient temperature value; The process of calculating the non-ambient temperature and the current infant status includes the following steps: When the kick-off detection starts, the module will be stopped for 3 seconds after the kick-off detection module is started, which is to move the interference heat source out of the detection area, so that relatively stable matrix data can be obtained in the initialization stage; S21: Detect the area with the highest temperature in the frame data. Because the sensor is more than 1m away from the bed, the detected heat source temperature is lower than the actual temperature, and the values ​​around the area with the highest temperature are higher than those in other areas. Calculate the temperature change curves at different positions in the matrix, and determine whether it is the baby's head by calculating the steepest slope change and the spatial area corresponding to the heat source; S22: According to the information of the baby initially set by the user, the volume and position distribution of the baby are roughly calculated during the analysis process.

2. The detection method of the smart baby crib system according to claim 1, characterized in that: Step S6 also includes the following steps: judging whether to alarm according to the alarm level and the temperature difference: the alarm level is divided into three levels, the user inputs the temperature difference level according to the seasonal conditions and weather temperature, and the control unit activates the corresponding alarm level according to the detected temperature difference.

3. A smart baby crib system comprising an anti-kicking quilt intelligent detection module based on the detection method of the smart baby crib system according to claim 2, comprising an infrared detection unit (5) and a control unit (9), wherein the data collected by the infrared detection unit (5) is transmitted through an infrared detection unit (5) to the control unit (9); 2 The C bus is transmitted to the control unit (9), and the control unit (9) analyzes the received data to obtain the real-time situation of infants and young children kicking the quilt in the current detection area; The infrared detection unit (5) detects the temperature of the human body and the area, collects 10 or 12 frames of image data of the detection area per second, and displays each frame of data in an 8*8 matrix to present the absolute temperature distribution. The image data is transmitted to the control unit (9), and the control unit (9) performs polling analysis on the collected matrix data to realize the recognition of the human body, effectively distinguish between human and non-human heat sources, and can detect the number and position of the human body within the viewing angle, as well as the posture and movement direction of the human body within the viewing angle; The invention also comprises a lower rotating device (1), an upper rotating device (2), a vertical support rod (3), a horizontal support rod (4), a sliding adjustment switch (6), a matte light strip (7), a key switch (8) and an alarm unit (10); the horizontal support rod (4) is provided with an infrared detection unit (5), a control unit (9), a sliding adjustment switch (6) and a matte light strip (7); one end of the horizontal support rod (4) is connected to the upper rotating device (2) and can be folded and stored; the vertical support rod (3) is composed of a key switch (8) and an alarm unit (10); the upper end of the vertical support rod (3) is connected to the upper rotating device (2); the infrared detection unit (5), the sliding adjustment switch (6), the matte light strip (7), the key switch (8), the control unit (9) and the alarm unit (10) perform signal interaction through a plastic-sealed wire.

4. The smart baby crib system comprising an anti-kicking quilt intelligent detection module according to claim 3, characterized in that: The infrared detection unit (5) uses an infrared array sensor AMG8853.

5. The smart baby crib system comprising an anti-kicking quilt intelligent detection module according to claim 4, characterized in that: The control unit (9) uses STM32F030.

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