Child bed self-adaptive adjusting system based on ultrasonic detection and electromechanical control

Abstract

The utility model belongs to the technical field of smart home, and particularly relates to a children's bed self-adaptive adjusting system based on ultrasonic detection and electromechanical control, which comprises a children's bed body, the children's bed body comprises a bed head, a bed tail and a bed body, and the children's bed body is internally provided with a body length intelligent identification module and a telescopic device. The body length intelligent identification module comprises a control electronic board, a control key, a first ultrasonic sensor and a second ultrasonic sensor, the first ultrasonic sensor is arranged on the bed head, and the second ultrasonic sensor is arranged at the bed tail and used for detecting the distance between the bed body and the body of the child; the control electronic board at least comprises a motor driving chip, an information input end and a PWM signal output end, and the telescopic device comprises a motor. According to the utility model, the length of the bed body can be adaptively adjusted, the bed head and the bed tail can be synchronously stretched out and drawn back, and the bed has the characteristics of intellectualization, high precision and high safety, and meets the use requirements.

Description

Technical Field

[0001] This utility model belongs to the field of smart home technology, and in particular relates to an adaptive adjustment system for a children's bed based on ultrasonic detection and electromechanical control. Background Technology

[0002] Furnishing a child's room requires investing in several pieces of furniture, and a children's bed is an essential one. With the improvement of people's living standards, most families buy a crib when a newborn is born. However, most cribs become unusable when the child is 3 or 4 years old, requiring the purchase of a different crib to meet the child's needs. As children grow from toddlers to teenagers, their needs for a bed gradually increase; that is, as children grow taller, the length of the bed must be adjusted to meet their growing needs.

[0003] Traditional children's beds have a fixed length and cannot automatically adjust to the size as the child grows, requiring parents to replace the bed regularly, increasing household expenses and failing to fully utilize the bed's functionality. While there are telescopic children's beds available, these typically rely on manual mechanical adjustment or a single sensor for control, resulting in inconvenient operation, low adjustment precision, and susceptibility to mechanical errors, thus failing to meet user needs. Utility Model Content

[0004] This invention addresses the technical problems existing in the extension and retraction adjustment process of children's beds mentioned above. It proposes a children's bed adaptive adjustment system based on ultrasonic detection and electromechanical control, which is reasonably designed, simple in structure, easy to process, and can achieve adaptive adjustment of bed length while ensuring synchronous extension and retraction of the head and foot of the bed. Through the combined feedback of Hall sensors and ultrasonic waves, the adjustment amount is precisely controlled. It integrates intelligence, high precision, and strong safety, effectively meeting the needs of users.

[0005] To achieve the above objectives, the present invention adopts a child bed adaptive adjustment system based on ultrasonic detection and electromechanical control, comprising a child bed body, which includes a headboard, a footboard, and a bed frame. The child bed body has a built-in intelligent length recognition module and a telescopic device. The intelligent length recognition module includes a control electronic board, control buttons, a first ultrasonic sensor, and a second ultrasonic sensor. The first ultrasonic sensor is located at the headboard, and the second ultrasonic sensor is located at the footboard, used to detect the distance between the bed frame and the child's body. The control electronic board includes at least a motor drive chip, an information input terminal, and a PWM signal output terminal. The telescopic device includes a motor. The detection data from the first and second ultrasonic sensors are used to control the PWM signal output terminal of the electronic board to drive the motor, thereby realizing the synchronous extension or retraction of the headboard and footboard of the bed frame.

[0006] Preferably, the bed frame is slidably connected to the headboard and footboard respectively via a sliding mechanism, so as to move horizontally between the headboard and footboard.

[0007] Preferably, the motor is located below the main body of the children's bed. The telescopic device also includes a threaded rod with positive and negative threads, a positive threaded nut tube, and a negative threaded nut tube. The threaded rod passes through the motor, with one end having a positive thread and the other end having a negative thread. The positive threaded nut tube and the negative threaded nut tube are respectively fitted on the left and right sides of the threaded rod, and angle brackets are set on their exteriors and connected to the head and foot of the bed respectively. When the motor drives the threaded rod to rotate, the positive threaded nut tube and the negative threaded nut tube move in opposite directions along the threaded rod to drive the head and foot of the bed to extend and retract synchronously.

[0008] Preferably, the PWM signal output terminal is electrically connected to the motor of the telescopic device, and the motor integrates a Hall sensor for real-time monitoring of motor speed and displacement.

[0009] Preferably, the first ultrasonic sensor transmits the signal to the motor drive chip of the control electronic board through the reflection wave time difference T1, and the second ultrasonic sensor transmits the signal to the motor drive chip through the reflection wave time difference T2. The motor drive chip calculates the child's height based on the difference between the reflection wave time differences T1 and T2 and generates a PWM adjustment signal.

[0010] Preferably, the number of pulse signals N output by the Hall sensor satisfies the following relationship with the reflection time difference T1 of the first ultrasonic sensor and the reflection time difference T2 of the second ultrasonic sensor 6:

[0011] N\cdot K=(T1+T2)\cdot S

[0012] Where -\(N\) is the number of pulse signals of the Hall sensor;

[0013] -\(K\) is the pitch of the lead screw of the telescopic device;

[0014] -\(T1\) and\(T2\) are the time differences of the reflected waves of the first ultrasonic sensor and the second ultrasonic sensor, respectively.

[0015] -\(S\) represents the speed at which ultrasound travels through the air.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. This utility model provides a child bed adaptive adjustment system based on ultrasonic detection and electromechanical control. It uses an ultrasonic sensor integrated inside the bed to detect the child's height in real time, and combines this with a PWM signal from a control board to drive a telescopic device, achieving adaptive adjustment of the bed length. The system employs a positive and negative threaded rod structure to ensure synchronous extension and retraction of the head and foot of the bed. Through combined feedback from a Hall sensor and ultrasonic waves, the adjustment amount is precisely controlled. This device is rationally designed, simple in structure, easy to manufacture, and can achieve adaptive adjustment of the bed length, ensuring synchronous extension and retraction of the head and foot of the bed. It also solves the problem of traditional child beds not being able to automatically adjust as the child grows. It features intelligence, high precision, and strong safety, effectively meeting user needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the children's bed body provided in this embodiment;

[0020] Figure 2 This is a structural schematic diagram of the children's bed body provided in this embodiment from another perspective;

[0021] Figure 3 This is a schematic diagram of the telescopic device provided in this embodiment;

[0022] Figure 4 This is a schematic diagram illustrating the working principle of the telescopic device provided in this embodiment;

[0023] Figure 5 This embodiment provides a block diagram of the signal transmission between the ultrasonic sensor, Hall sensor, motor, and control electronic board, along with its working principle diagram.

[0024] In the above figures, 1. Headboard; 2. Footboard; 3. Bed; 4. Telescopic device; 41. Device box; 42. Control device; 43. Motor; 44. Angle bracket; 45. Positive thread nut tube; 46. Positive and negative thread screw; 47. Negative thread nut tube; 5. First ultrasonic sensor; 6. Second ultrasonic sensor. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Examples, such as Figures 1-3 As shown, an adaptive adjustment system for a children's bed based on ultrasonic detection and electromechanical control includes a children's bed body, which includes a headboard 1, a footboard, and a bed frame. The children's bed body has a built-in intelligent length recognition module and a telescopic device 4. The intelligent length recognition module includes a control electronic board, control buttons, a first ultrasonic sensor 5, and a second ultrasonic sensor 6. The first ultrasonic sensor 5 is located on the headboard 1, and the second ultrasonic sensor 6 is located on the footboard, used to detect the distance between the bed frame and the child's body. The control electronic board includes at least a motor 43 driver chip, an information input terminal, and a PWM signal output terminal. The telescopic device 4 includes a motor 43 and is also equipped with a control device 42, which is located in the device box 41 of the telescopic device 4. The detection data of the first ultrasonic sensor 5 and the second ultrasonic sensor 6 are transmitted to the control device 42 to output control signals to the control electronic board. Under the action of the motor 43 driver chip, the PWM signal output terminal drives the motor 43 to work, realizing the synchronous extension or retraction of the headboard 1 and the footboard of the bed frame.

[0028] To ensure the children's bed has good telescopic performance, the bed frame is slidably connected to the headboard 1 and footboard 1 via a sliding mechanism, allowing horizontal movement between them. Specifically, the headboard 1 typically includes a headboard panel with a headboard frame on one side. The headboard panel also has mounting holes for the first ultrasonic sensor 5. The footboard typically includes a footboard with mounting holes for the second ultrasonic sensor 6. The footboard also has a footboard frame on one side. The bed frame 3 typically includes a bed frame and bed legs positioned below the bed frame on both sides to ensure stability. Sliding plates are provided on both sides of the bed frame, cooperating with the headboard 1 and footboard frame plates. Furthermore, the headboard and footboard frames have grooves for easy placement of the sliding plates, ensuring convenient movement and adjustment. This design allows the bed to extend or shorten smoothly, providing strong functionality.

[0029] like Figure 4As shown, to improve the rationality of the device setup, the motor 43 is located below the main body of the children's bed. The telescopic device 4 also includes a threaded rod 46, a threaded nut tube 45, and a threaded nut tube 47. A threaded nut and a threaded nut are respectively installed at the ends of the threaded nut tube 45 and the threaded nut tube 47. The threaded rod 46 passes through the motor 43, with one end having a threaded spur and the other end having a threaded reverse. The threaded nut tube 45 and the threaded nut tube 47 are respectively fitted onto the left and right sides of the threaded rod 46, and angle brackets 44 are installed on their exteriors and connected to the headboard 1 and the footboard 1 respectively. When the motor 43 drives the threaded rod 46 to rotate, the threaded nut tube 45 and the threaded nut tube 47 move in opposite directions along the threaded rod, thereby driving the headboard 1 and the footboard 1 to extend synchronously. The telescopic device 4 works as follows: When the motor 43 rotates forward, the double-headed output shaft of the motor 43 rotates clockwise, driving the positive and negative threaded screw 46 connected to the two ends of the output shaft to rotate clockwise. The screw and the positive and negative threaded nut 47 rotate in opposite directions. Since the nut and the nut tube are embedded in each other, the nut tube extends outward, and the thrust drives the bed 3 away from the headboard 1, that is, the foot of the bed extends backward, thereby increasing the length of the bed to meet the needs of the child's height. Conversely, when the motor 43 rotates in reverse, the double-headed output shaft of the motor 43 rotates counterclockwise, driving the screw connected to the double-headed output shaft to rotate counterclockwise. Since the nut and the nut tube are embedded in each other, when the nut tube retracts inward, the thrust drives the bed 3 to move closer to the headboard 1, that is, the foot of the bed retracts forward, thereby shortening the length of the bed.

[0030] like Figure 5 As shown, the control board and PWM signal output terminal are electrically connected to the motor 43 of the telescopic device 4. A Hall sensor is integrated inside the motor 43 of the telescopic device 4 to monitor the speed and displacement of the motor 43 in real time. The working principle is further described in detail as follows: When the function of detecting the child's height is started, the first ultrasonic sensor 5 transmits the signal to the motor 43 driver chip of the control board through the reflection wave time difference T1. At the same time, the second ultrasonic sensor 6 transmits the signal to the motor 43 driver chip through the reflection wave time difference T2. According to the pre-set program, the motor 43 driver chip of the control board calculates the child's height value and the stored height value based on the difference between T1 and T2. If the difference exceeds a certain threshold, the motor 43 driver chip outputs information and drives the PWM output signal adjustment signal, and the motor 43 of the telescopic device 4 works briefly.

[0031] The control board drives the motor 43 of the telescopic device 4 to work briefly and accurately realize the extension dimension of the bed. Its working principle is as follows: The number of pulse signals output by the Hall sensor is set to N, and the time difference T1 of the reflected wave of the first ultrasonic sensor 5 and the time difference T2 of the reflected wave of the second ultrasonic sensor 66 satisfy the following relationship:

[0032] N\cdot K=(T1+T2)\cdot S

[0033] Where -\(N\) is the number of pulse signals of the Hall sensor;

[0034] -\(K\) is the pitch of the lead screw of the telescopic device 4, and its unit is centimeters per revolution;

[0035] -\(T1\) and\(T2\) are the time differences of the reflected waves of the first ultrasonic sensor 5 and the second ultrasonic sensor 6, respectively, and their units are seconds.

[0036] -\(S\) represents the speed of sound in air, and its unit is centimeters per second;

[0037] Furthermore: when the number of pulse signals of the Hall sensor is N, it means that the rotation of the lead screw is also N. Combined with the rotation pitch k of the lead screw of the telescopic device 4, it reflects the length of the nut tube moving along the lead screw, that is, the extension length of the children's bed.

[0038] In the above process: the child's height is detected in real time by the ultrasonic sensor integrated inside the bed. Combined with the PWM signal of the control board, the telescopic device 4 is driven to achieve adaptive adjustment of the bed length. The system adopts a positive and negative threaded rod 46 structure to ensure that the head and foot of the bed extend and retract synchronously. The adjustment amount is precisely controlled through the combined feedback of Hall sensor and ultrasonic wave. This device is reasonably designed, simple in structure, easy to manufacture, and can achieve adaptive adjustment of the bed length. It also ensures that the head and foot of the bed extend and retract synchronously. The adjustment amount is precisely controlled through the combined feedback of Hall sensor and ultrasonic wave. It solves the problem that traditional children's beds cannot automatically adjust with the child's growth. It has the characteristics of intelligence, high precision and strong safety, and effectively meets the needs of users.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A child bed self-adaptive adjustment system based on ultrasonic detection and electromechanical control, comprising a child bed body, the child bed body comprising a bed head, a bed tail and a bed body, characterized in that, The children's bed body has a built-in intelligent length recognition module and a telescopic device. The intelligent length recognition module includes a control electronic board, control buttons, a first ultrasonic sensor, and a second ultrasonic sensor. The first ultrasonic sensor is located at the head of the bed, and the second ultrasonic sensor is located at the foot of the bed, used to detect the distance between the bed body and the child's body. The control electronic board includes at least a motor drive chip, an information input terminal, and a PWM signal output terminal. The telescopic device includes a motor. The detection data from the first and second ultrasonic sensors are used to control the PWM signal output terminal of the electronic board to drive the motor, so as to realize the synchronous extension or retraction of the head and foot of the bed body.

2. The self-adapting system for children's bed based on ultrasonic detection and electromechanical control according to claim 1, characterized in that, The bed frame is slidably connected to the headboard and footboard respectively via a sliding mechanism, so as to move horizontally between the headboard and footboard.

3. The self-adapting system for children's bed based on ultrasonic detection and electromechanical control according to claim 2, characterized in that, The motor is located below the main body of the children's bed. The telescopic device also includes a threaded rod with positive and negative threads, a positive threaded nut tube, and a negative threaded nut tube. The threaded rod passes through the motor, with one end having a positive thread and the other end having a negative thread. The positive threaded nut tube and the negative threaded nut tube are respectively fitted on the left and right sides of the threaded rod, and angle brackets are set on their exteriors and connected to the head and foot of the bed respectively. When the motor drives the threaded rod to rotate, the positive threaded nut tube and the negative threaded nut tube move in opposite directions along the threaded rod to drive the head and foot of the bed to extend and retract synchronously.

4. The self-adapting system for children's bed based on ultrasonic detection and electromechanical control according to claim 1, characterized in that, The PWM signal output terminal is electrically connected to the motor of the telescopic device. The motor has an integrated Hall sensor for real-time monitoring of the motor speed and displacement.

Images