Please select the most similar patent number from A, B, C and D. Which number is?
A guide system (20) and method for healthy water-drinking of a child are applied to a water-drinking apparatus (100). The water-drinking apparatus (100) comprises a cup body (1), a linear (3), and a base (2). A flexible display screen (11) and a fingerprint sensing film (12) are inlaid on the outer surface of the cup body (1), a water pressure sensor (30) is disposed at the bottom of the linear (3), and an infrared sensor (22) is disposed on the base (2). When sensing that the human body gets close to the water-drinking apparatus (100), the infrared sensor (22) displays a cartoon that a child is interested in on the flexible display screen (11), to draw the attention of the child under guardianship to touch the cup body (1) of the water-drinking apparatus (100) by hands. The fingerprint sensing film (12) recognizes the fingerprint on the cup body (1), and the water pressure sensor (30) measures the water pressure of the linear (3) to determine whether the child needs supplementation of water. When the child needs supplementation of water, an image improving the desire of the child for drinking water and the volume of water needing to be drunk are displayed on the flexible display screen (11), to guide the child to drink water in time. The system (20) and method can improve the desire of a child for drinking water, guide the child to drink water healthily, enhance the consciousness of drinking water of the child, and help the child to develop the habit of drinking water at regular time.
A: A smart cup, comprising a cavity (1) for containing water. A pressure sensor (11), a processor (14) and a power module (15) are provided at the bottom of the cavity (1); a water level sensor (12) and a water quality detection device (13) are provided on the inner side wall of the cavity (1); the pressure sensor (11), the water level sensor (12), the water quality detection device (13) and the processor (14) are separately connected to the power module (15); the pressure sensor (11), the water level sensor (12) and the water quality detection device (13) are separately connected to the processor (14). The water quality detection device (13) is provided on the inner side wall of the cavity (1) of the smart cup and used for detecting the oxygen content of water in the cavity (1) so as to accurately detect the water quality; the pressure sensor (11) at the bottom of the cavity (1) of the smart cup and the water level sensor (12) on the inner side wall of the cavity (1) acquire related data and send the data to the processor (14) to cooperatively calculate the amount of water a user drinks. The smart cup has high intelligence.
B: An automatic alarm system and method for use in monitoring child safety, comprising: when a child monitoring terminal (1) is activated into an operating mode, capturing a body image of a child via a camera device (11) of the child monitoring terminal (1) (step S11); detecting whether or not the body image comprises a specific feature (step S12); when the body image comprises the specific feature, activating a positioning unit (12) of the child monitoring terminal (1) to position geographic location information of the child (step S13); generating alarm information comprising the specific geographic location of the child and the body image comprising the specific feature (step S14); and automatically transmitting the alarm information to a monitoring center platform (2) of the police via a communication unit (13) of the child monitoring terminal (1) to alert the police. When the child is in an unsafe condition such as being lost, this accurately positions the specific location of the child, helps the child to transmit distress information as soon as possible, and allows the police to rescue the child as soon as possible.
C: A mobile, radar-sensing child learning device, comprising a display screen (1) and a base (2), an upper side of the base (2) being provided with a chamber (9), the chamber (9) having disposed therein a cleaning mechanism (8), the cleaning mechanism (8) comprising a first electric motor (10) embedded in the chamber (9), an output end of the first electric motor (10) being provided with a shaft (11), the shaft (11) having provided thereon a second electric motor (12), an output end of the second electric motor (12) being provided with a cleaning brush (13), a lower side of the shaft (11) being provided with a water delivery tube (14), a lower end of the water delivery tube being provided with a mopping board (15), a lower side of the mopping board (15) being provided with a mopping cloth (16), the mopping board (15) having provided therein a cavity, a lower side of the cavity being provided with a water draining hole (24), and the base (2) having provided therein a water chamber (17), the water chamber (17) having provided therein a water pump (18). The mobile, radar-sensing child learning device not only has educational functionality, but also can improve a child&#39;s manual manipulative ability, trains the child&#39;s working ability, has multiple type of functions, and has strong usability.
D: A paperless early education machine for children based on wireless transmission technology. The early education machine for children comprises a machine body (1), wherein a playing display screen (5) and a writing screen board (4) are arranged on a side surface of the middle portion of the machine body (1); the top of the machine body (1) is provided with an audio player (2) and a microphone (26); a control chip (7) is mounted inside the machine body (1); an early education interaction system is installed in the control chip (7); and the early education interaction system comprises a communication unit (10), a receiving conversion unit (11), a central processing module (12), an input module (13), a modeling unit (14) and a playing display unit (15). The paperless early education machine for children can perform interactive teaching, and perform data transmission by means of remote wireless transmission so as to update an education mode and resources in a timely manner; and a modeling unit (14) can replace characters or animated characters of interest to a child with animals in a video to realize interesting teaching, thereby improving the teaching quality.
Answer: A