TWI425452B - Device and method for monitoring young children - Google Patents

Description

Infant monitoring device and method

The present invention relates to the field of monitoring devices, and more particularly to an infant monitoring device and method.

At present, infant and child care devices on the market are used to monitor the behavior and range of activities of infants and young children through video. This method is not fundamentally different from on-site care. Only the guardian of infants and young children can stay away from infants and children, and guardians will feel Very tired. When sleeping at night, the infant sometimes kicks off the quilt. At this time, the guardian may be in sleep, and the abnormal behavior of the infant's sleep cannot be found in time.

In view of the above, a preferred embodiment of the present invention provides an infant monitoring method for an infant monitoring device equipped with a thermal imaging camera, a controller, and an alarm device. The thermal imaging camera and the alarm device are connected to the controller through an I/O circuit. The method comprises: (a) the controller calibrating the activity range monitoring mode of the infant monitoring device, calculating a position coordinate set of the infant activity range; and (b) the controller reading the baby captured by the thermal imaging camera device The thermal image data of the child is used to calculate the position coordinates of the infant and determine whether the position coordinates of the infant fall within the calculated set of position coordinates; (c) when the position coordinates of the infant fall within the calculated position coordinate set Returning to step (b) while inside; (d) when the position coordinates of the infant do not fall within the calculated set of position coordinates, the controller triggers the alarm loading An alarm signal is sent to notify the guardian.

The invention also provides an infant monitoring device, which comprises a thermal imaging camera device, a controller and an alarm device. The thermal imaging camera device and the alarm device are respectively connected to the controller through an I/O circuit; the thermal imaging camera device is configured to capture a thermal image of the infant and obtain each primitive constituting the thermal image. Corresponding temperature value and coordinate value of the point; the controller is configured to calibrate a position coordinate set of the infant activity range according to the captured thermal image in the activity range monitoring working mode of the infant monitoring device; And when the infant monitoring device is operated in the active range monitoring mode, reading the thermal image data of the infant captured by the thermal imaging camera, and calculating the position coordinate of the infant when the When the position coordinates do not fall within the set of position coordinates, the alarm device is triggered to send an alarm signal to notify the guardian.

Compared with the prior art, the infant monitoring device and method provided by the present invention can effectively monitor the range of activities of infants and young children. When the activity range of the infant exceeds the range of activities set by the guardian, the alarm device will issue an alarm signal. Remind guardians of infants and young children who are working or are dealing with other matters.

100‧‧‧ Infant monitoring device

1‧‧‧ Thermal imaging camera

2‧‧‧ Controller

3‧‧‧ alarm device

4‧‧‧Setting module

30‧‧‧ Processor

20‧‧‧ memory

40‧‧‧I/O circuits

50‧‧‧Scope of activity monitoring

60‧‧‧ Sleep Condition Monitoring

70‧‧‧ calibration

80‧‧‧Confirm

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing the composition of an infant care device of the present invention.

2 is a schematic view showing the operation of the infant monitoring device of the present invention in the active range monitoring mode.

3 is a schematic diagram of the infant monitoring device of the present invention operating in a sleep condition monitoring mode.

Figure 4 is a flow chart of the infant care monitoring method of the present invention.

As shown in Fig. 1, it is a frame diagram of the composition of the infant care device of the present invention. The infant care device 100 includes a thermal imaging camera 1, a controller 2, an alarm device 3, and a setting module 4. The controller 2 includes a processor 30, a memory 20, and an input/output (I/O) circuit 40. The setting module 4 includes an activity range monitoring 50, a sleep condition monitoring 60, a calibration 70, and a confirmation 80. Function buttons.

The thermal imaging camera 1 is configured to capture a thermal image of an object and obtain a temperature value and a coordinate value corresponding to each of the primitive points constituting the thermal image.

The controller 2 is used to calibrate the set of position coordinates of the range of activity of the infant and to calibrate the maximum area of the body that allows the infant to be exposed to the outside of the quilt during sleep.

The controller 2 is further configured to send an alarm signal to alert the infant's guardian when an abnormal condition of the infant is detected.

The setting module 4 is used to set an operation mode of the infant monitoring device 100. The working mode of the infant monitoring device 100 includes: activity range monitoring and sleep condition monitoring.

The thermal imaging camera 1, the alarm device 3 and the setting module 4 shown in Fig. 1 are operatively connected to the I/O circuit 40, and different connection schemes can be employed. For example, the setting module 4 can be connected to the I/O circuit 40 via a direct line, or can be connected to the I/O circuit 40 via a remote control transmitting and receiving device and can establish a connection with the controller 2.

In order to more fully explain the present invention, before explaining the two modes of operation of the infant care device 100, it is explained how to determine the position coordinates of the infant and the area of the body of the infant and the child exposed to the quilt in the present invention. size. The thermal imaging camera 1 can capture a thermographic image of an infant and can obtain a thermographic image. The coordinate value and temperature value corresponding to each primitive point. Since the normal temperature of the human body is above 36 degrees Celsius, all the pixel points corresponding to the temperature value greater than 30 degrees Celsius can be screened out, and the figure composed of these primitive points is considered to be the thermal image of the infant, and the figure is calculated. The average of the coordinates of the feature point, the average of the coordinates is taken as the position coordinate of the infant. It should be noted that, in the following description, the position coordinates of infants and young children are referred to, that is, the coordinate mean values of the primitive points of the thermal image of the infant, and not the position coordinates of the infant in the actual three-dimensional space environment. . Similarly, by calculating the sum of the number of primitive points in the thermal image where all temperature values are greater than 30 degrees Celsius, it is clear that the magnitude of the sum is proportional to the size of the body of the infant exposed to the outside of the quilt. In the present invention, the sum is used to quantify the area in which the infant is exposed to the outside of the quilt, rather than the actual area of the body in which the infant is exposed to the outside of the quilt.

In the working mode of the activity range monitoring, the calibration button 70 and the confirmation button 80 are first used to determine a range of activities that the guardian thinks is appropriate, and the set of position coordinates of the infant is obtained. For further explanation, referring to Fig. 2, the thermal imaging camera 1 of the infant care device 100 is mounted at a suitable position, and the thermal imaging camera 1 is generally mounted at a suitable position above the infant's activity site. The range in which the thermal imaging camera 1 can be monitored is larger than the range of activity of the infant that the guardian wants to set.

First, the infant is placed in the position A, and the calibration button 70 is pressed to trigger the controller 2 to read the thermal image captured by the thermal imaging camera 1 at this time, and select all the corresponding temperature values in the thermal image to be greater than 30 degrees Celsius. The picture element points, the picture element A1 constitutes a picture A1, and the picture A1 represents an image formed by the infant in the thermal image. Calculate the coordinate mean Z(A) of all the feature points included in the graph A1. According to the same procedure, the infants are placed in the other positions B, C and D shown in Fig. 2, respectively, to obtain corresponding positions. Thermal image. It should be clarified that the four positions A, B, C and D should not be in a straight line, and the four points should be able to enclose a two-dimensional figure (triangle or quadrilateral) for limiting the range of activity of infants and toddlers. All the pixel points corresponding to the temperature value greater than 30 degrees Celsius are selected in each thermal image to obtain the other three coordinate averages Z(B), Z(C) and Z(D). The four points determined by the obtained four coordinate averages Z(A), Z(B), Z(C), and Z(D) constitute a graphic 202 from which the range of activity of the infant is determined. Location coordinates collection. Pressing the confirmation button 80 saves the calculated set of position coordinates to the memory 20.

After the above settings are completed. If the infant monitoring device 100 is operating in the active range monitoring mode, the controller 2 reads the thermal image data captured by the thermal imaging camera 1 and calculates the position coordinates of the infant, and if the calculated position coordinates fall before the calculation Within the set of coordinates of the infant's position, the next thermal image data is continuously read for calculation; otherwise, the controller 2 sends a signal to trigger the alarm device 3 to issue an alarm signal to alert the infant's guardian.

In the working mode of infant sleep monitoring, first press the calibration button 70 to trigger the controller 2 to set the maximum area of the body that allows the infant to be exposed to the outside of the quilt. For further explanation, please refer to FIG. 3, the infant monitoring device The thermal imaging camera 1 of 100 is mounted in a suitable position, and the thermal imaging camera 1 can generally be mounted above the bed of the baby so that the range of the thermal imaging camera can be monitored more than the range of possible activities of the infant while sleeping. Bigger. Let the baby lie on the bed and expose the baby's body to a part of the quilt. This is the upper limit that the guardian thinks is acceptable. The exposed body part of the infant is shown in the figure 300. Pressing the calibration button 70 triggers the thermal imaging camera 1 to capture a thermal image 303, and the controller 2 reads the data of the thermal image 303 to filter the heat map. Like 303, the corresponding temperature value is greater than 30 The graph points of the graphs, the graphs 304 constitute the graph 304, the graph 304 is the image of the body of the infant and the child exposed outside the quilt, and the sum of the number of the graph points included in the graph 304 is calculated, and the sum is The value is the maximum value of the body area that allows the infant to be exposed to the outside of the quilt. After the setting is completed, the confirmation button 80 is pressed to save the maximum value of the body area calculated above to the memory 20.

After the above setting is completed, if the infant monitoring device 100 is operating in the sleep state monitoring mode, the controller 2 immediately reads the thermal image data captured by the thermal imaging camera 1 and calculates the area of the body exposed by the infant. If the calculated area is smaller than the maximum area set as described above, the next thermal image data is continuously collected for calculation; otherwise, the controller 2 sends a signal to trigger the alarm device 3 to issue an alarm signal to alert the infant guardian.

Referring to Figure 4, there is shown a flow chart of the operation of the infant care device of the present invention.

In step S404, the set of position coordinates of the range of activities of the infant and the maximum area of the body that allows the infant to be exposed to the outside of the quilt during sleep are calculated. For the method of calibration, please refer to the above detailed description of Figure 2 and Figure 3.

In step S408, the operation mode of the infant care device 100 is set. If the operation mode of the infant care device 100 is the active range monitoring, the flow proceeds to step S410; if the infant monitoring device 100 operates in the sleep state monitoring, the flow proceeds to step S418.

In step S410, the controller 2 reads the thermal image data captured by the thermal imaging camera 1 and calculates the position coordinates of the infant.

Step S414, the controller 2 determines whether the calculated position coordinates of the infant fall within the calculated coordinate set of the infant activity range; if yes, the process proceeds to S410; otherwise the flow goes to step S416.

In step S416, the controller 2 sends a signal to trigger the alarm device 3 to send a signal, so that the alarm device 3 sends an alarm signal to alert the infant's guardian.

In step S418, the thermal image data captured by the current thermal imaging camera 1 is read, and the area of the body exposed by the infant outside the quilt is calculated.

Step S422, determining whether the calculated area is greater than the calculated maximum area of the body that allows the infant to be exposed to the outside of the quilt; if the calculated area is not greater than the calculated body that allows the infant to be exposed to the body outside the quilt The maximum value of the area, the flow proceeds to step S418; otherwise, the flow proceeds to step S416.

100‧‧‧ Infant monitoring device

1‧‧‧ Thermal imaging camera

2‧‧‧ Controller

3‧‧‧ alarm device

4‧‧‧Setting module

30‧‧‧ Processor

20‧‧‧ memory

40‧‧‧I/O circuits

50‧‧‧Scope of activity monitoring

60‧‧‧ Sleep Condition Monitoring

70‧‧‧ calibration

80‧‧‧Confirm

Claims (8)

An infant monitoring method is applied to an infant monitoring device equipped with a thermal imaging camera, a controller and an alarm device, the thermal imaging camera and the alarm device being connected to the controller through an I/O circuit, the method comprising (a) The controller calibrates the activity range monitoring mode of the infant monitoring device, and calculates a set of position coordinates of the infant activity range, including: (a1) placing the infants in four different positions, The four positions should be able to enclose a two-dimensional triangle or quadrilateral, repeating steps (a11) to (a13) at each position: (a11) the controller reads the infant captured by the thermal imaging camera at that position The thermal image data of the active range; (a12) the controller filters out all the pixel points corresponding to the temperature value greater than 30 degrees Celsius in the thermal image, and the graphic elements form a graphic; (a13) the controller calculates the graphic The coordinate average of all the included primitive points; (a2) The four points determined by the obtained four coordinate averages form a graph, and the set of position coordinates included in the graph is (b) The controller reads the thermal image data of the infant and the baby captured by the thermal imaging camera, calculates the position coordinates of the infant, and determines whether the position coordinates of the infant fall within the calculated (c) returning to step (b) when the position coordinates of the infant fall within the calculated set of position coordinates; (d) When the position coordinates of the infant do not fall within the calculated set of position coordinates, the controller triggers the alarm device to issue an alarm signal to notify the guardian. In the infant care monitoring method described in the first aspect of the patent application, the position coordinates of the infant in the step (b) refer to the coordinate average of all the pixel points of the thermal image of the infant. The infant care monitoring method of claim 1, the method further comprising: (e) calibrating the sleep condition monitoring mode of the infant monitoring device to calculate that the infant is allowed to be exposed during sleep. (f) The controller reads the thermal image data captured by the thermal imaging camera, calculates the area of the body exposed to the infant, and determines whether the area of the body exposed to the infant is greater than the calculated (g) when the area of the body exposed to the infant is not greater than the calculated maximum area, return to step (f); (h) when the area of the body exposed to the infant is greater than the calculated maximum In the area, the controller triggers the alarm device to send an alarm signal to notify the guardian. In the infant care monitoring method described in claim 3, in step (e), the maximum area of the body that allows the infant to be exposed while calibrating sleep includes: placing the infant on the bed and exposing the infant body One part is outside, the exposed part of the area is the maximum area acceptable to the guardian; the controller reads the thermal image data of the infant in the above case captured by the thermal imaging camera; the controller filters out the heat The image point in the image corresponding to a temperature value greater than 30 degrees Celsius The primitive points constitute a figure of the body exposed by the infant; the controller calculates the sum of the number of primitive points included in the graphic, and uses the sum as the maximum body area that allows the infant to be exposed . An infant monitoring device includes a thermal imaging camera device, a controller and an alarm device, wherein the thermal imaging camera device and the alarm device are respectively connected to the controller through an I/O circuit; the thermal imaging camera a device for capturing a thermal image of the infant and obtaining a corresponding temperature value and a coordinate value of each of the primitive points constituting the thermal image; the controller configured to: according to the captured thermal image In the infant range monitoring device, the position coordinate set for calibrating the range of activity of the infant and child in the monitoring mode, including: (a1) placing the infants in four different positions, the four positions should be able to enclose a two-dimensional a triangle or a quadrangle, repeating steps a11 to a13 at each position: (a11) the controller reads the thermal image data of the range of motion of the infant captured by the thermal imaging camera at the position; (a12) the controller filters out All the pixel points in the thermal image corresponding to the temperature value greater than 30 degrees Celsius, and the graphic elements form a graphic; (a13) the controller calculates all the pixel points included in the graphic (a2) The four points determined by the average of the four coordinates obtained form a figure, and the set of position coordinates included in the figure is a set of position coordinates of the range of activity of the infant; the controller also For reading the infant captured by the thermal imaging camera when the infant monitoring device is operating in the active range monitoring mode of operation The thermal image data calculates the position coordinates of the infant, and when the position coordinate does not fall within the position coordinate set, the alarm device is triggered to send an alarm signal to notify the guardian. In the infant care device of the fifth aspect of the patent application, the position coordinates of the infant refers to the coordinate average of all the pixel points of the thermal image of the infant. The infant care device of claim 5, wherein the controller is further configured to calibrate a maximum area of the body that the infant is exposed to while sleeping in the sleep condition monitoring mode; the controller further For reading the thermal image data captured by the thermal imaging camera when the monitoring device is operating in the sleep state monitoring mode, and calculating the area of the body exposed by the infant, when the area is greater than the calculated maximum area The triggering alarm device sends an alarm signal to notify the guardian. The infant monitoring device according to the seventh aspect of the patent application, wherein the controller calibrates the maximum area of the body that the infant is exposed to while sleeping in the sleep state monitoring mode of operation is accomplished by the following steps: Placed on the bed and expose the baby's body to a part of the exposed area, which is the maximum area acceptable to the guardian; the controller reads the heat map of the infant in the above case captured by the thermal imaging camera The image is filtered by the controller to select a pixel point corresponding to a temperature value greater than 30 degrees Celsius in the thermal image, the pixel point forming a graphic of the body exposed by the infant; the controller calculates the pixel point included in the graphic The sum of the numbers is used as the maximum value of the body area that allows the infant to be exposed.