A posture correction height-adjustable desk

Abstract

This utility model relates to the field of posture correction height-adjustable desk technology, and in particular to a posture correction height-adjustable desk, including a height-adjustable component and a tabletop, as well as a desk lamp component located on the rear side of the tabletop, an elbow rest component and a chin rest component located on the front side. By integrating a BH1750 light sensor, a K210 vision module, a pressure sensor array and a heart rate and blood oxygen monitoring unit, it achieves coordinated operation of intelligent adjustment of ambient light intensity, real-time posture tracking and dynamic monitoring of physiological indicators. Based on a dual-core system built with an STM32F407 main controller and an ESP32 communication module, it achieves high-speed transmission of image data at 12Mbps through SPI+DMA, while maintaining real-time control of the motor driver via the CAN bus. It aims to provide a comfortable, safe and healthy home and learning environment for primary and secondary school students, while providing parents with effective management tools. It also solves the problems of single function and slow response of traditional height-adjustable desks, significantly improving the efficiency of healthy office work.

Description

Technical Field

[0001] This utility model relates to the technical field of posture correction height-adjustable desks, and in particular to a posture correction height-adjustable desk. Background Technology

[0002] A height-adjustable desk is a type of smart furniture that allows users to alternate between sitting and standing while working, aiming to improve health problems caused by prolonged sitting and increase work efficiency. Alternating between sitting and standing alleviates the harms of prolonged sitting. The height of the desk can be adjusted electrically or manually (commonly ranging from 58-125cm), helping users switch between sitting and standing postures at any time. Studies have shown that standing while working can increase metabolic rate by 12%, reduce lumbar spine pressure, and lower the risk of chronic diseases. Through precise height adjustment, it matches the height of different users and usage scenarios (such as office work, studying, practicing music), reducing strain on the shoulders, neck, and lower back.

[0003] However, existing height-adjustable desks have the following problems: Limited functionality: Traditional products only have height adjustment capabilities and lack a real-time sensing and feedback mechanism for the user's posture. Insufficient environmental adaptability: The lighting systems of existing smart desks are mostly independently controlled, failing to achieve coordinated adjustment with ambient light, which can easily cause visual fatigue. Utility Model Content

[0004] To overcome the shortcomings of existing methods, this utility model provides a posture correction height-adjustable table.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a posture correction height-adjustable table, including a height-adjustable assembly and a tabletop, as well as a desk lamp assembly disposed on the rear side of the tabletop, an elbow support assembly disposed on the front side, and a chin support assembly; the desk lamp assembly includes an adjustable lighting lamp, a BH1750 light sensor, and a K210 camera; the elbow support assembly includes a support frame and an elbow support plate, the elbow support plate is provided with a pressure sensor and a heart rate and pulse oximeter, and a chin support assembly is disposed between the two elbow support assemblies, the chin support assembly including two adjustable frames, a chin support plate, and a chest rest; the chin support plate and the chest rest are respectively provided with pressure sensors Sensor 2 and pressure sensor 3; the table is supported by a lifting assembly, is U-shaped, with a chin support assembly installed in the middle of the protrusion and elbow support assemblies installed on both sides, and has a built-in controller; the controller has a built-in power supply module, connects to various functional modules through a heterogeneous communication architecture, connects to the BH1750 light sensor and heart rate and pulse oximeter through the I²C bus, connects to the K210 camera through the SPI+DMA channel, collects analog signals from pressure sensor 1, pressure sensor 2, and pressure sensor 3 through the ADC interface, connects to the motor driver of the lifting assembly through the CAN bus, and controls the brightness of the dimmable lighting lamp through PWM output.

[0006] According to another embodiment of the present invention, the controller further includes an STM32F407ZGT6 as its main control chip, and its peripheral interface configuration includes connecting a BH1750 light sensor through I²C1 interface pins PB6 / PB7, connecting a heart rate and pulse oximeter through I²C2 interface pins PB10 / PC12, connecting a K210 camera through SPI2 interface pins PC10 / PC11 / PC12, acquiring pressure sensor signals through ADC1 channel pins 4-6 PC1-PC3, outputting a PWM dimming signal through TIM1_CH1 pin PE9, and connecting a lifting motor driver through CAN2 interface pins PB8 / PB9.

[0007] According to another embodiment of the present invention, the heterogeneous communication architecture further includes a communication module, specifically an ESP32-WROOM-32E module, which communicates with the main control chip via USART3 pins PD8 / PD9.

[0008] According to another embodiment of the present invention, the elbow support plate has an arc-shaped design structure, with an inner elbow pad made of polyurethane foam (HA30) material in the middle, and two elastic armbands on both sides.

[0009] According to another embodiment of the present invention, the support frame further includes a main support rod and a secondary support rod; the supporting part of the main support rod is welded to the elbow support plate, and the secondary support rod is sleeved on the outside; the main support rod and the secondary support rod are provided with a plurality of sets of adjusting threaded holes corresponding to each other on their surfaces, and adjusting screws are provided in the threaded holes; the bottom of the secondary support rod is welded to the table plate through a positioning block.

[0010] According to another embodiment of the present invention, the chin support assembly further includes two sets of adjustment frames, a chin support plate and a chest rest. The two sets of adjustment frames are arranged in parallel, and the back is slidably connected to the table by a locking block. A chest rest is provided in the middle and a chin support plate is installed on the top.

[0011] The beneficial effects of this invention are that by integrating a BH1750 light sensor, a K210 vision module, a pressure sensor array, and a heart rate and blood oxygen monitoring unit, it achieves coordinated operation of intelligent adjustment of ambient light intensity, real-time posture tracking, and dynamic monitoring of physiological indicators. Based on a dual-core system built with an STM32F407 main controller and an ESP32 communication module, it achieves high-speed transmission of image data at 12Mbps via SPI+DMA, while maintaining real-time control of the motor driver via the CAN bus (response time <5ms). This invention aims to provide students with a comfortable, safe, and healthy home and learning environment, while also providing parents with effective management and monitoring methods. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is the electrical connection diagram of this utility model;

[0015] Figure 3 Schematic diagram of the elbow support assembly;

[0016] Figure 4 This is a schematic diagram of the K210 camera and BH1750 light sensor structure;

[0017] Figure 5 This is a top view of the present invention.

[0018] The diagram shows: 1. Lifting assembly; 2. Tabletop; 3. Desk lamp assembly; 3-1. Dimmable lighting; 3-2. BH1750 light sensor; 3-3. K210 camera; 4. Elbow support assembly; 4-1. Support frame; 4-1-1. Main support rod; 4-1-2. Secondary support rod; 4-1-3. Adjusting threaded hole; 4-1-4. Adjusting screw; 4-1-5. Positioning block; 4-2. Elbow support plate; 4-2-1. Inner elbow pad of elbow support; 4-2-2. Elastic armband; 4-3. Pressure sensor one; 4-4. Heart rate and pulse oximeter; 5. Chin support assembly; 5-1. Adjusting frame; 5-1-1. Locking block; 5-2. Chin support plate; 5-3. Chest rest; 5-4. Pressure sensor two; 5-5. Pressure sensor three; 6. Controller; 6-1. Power supply module. 6-2. Heterogeneous communication architecture; 6-3. Main control chip. Detailed Implementation

[0019] like Figure 1This is a schematic diagram of the structure of this utility model, a posture correction height-adjustable table, including a height-adjustable assembly 1 and a tabletop 2, as well as a desk lamp assembly 3 located on the rear side of the tabletop 2, an elbow support assembly 4 located on the front side, and a chin rest assembly 5. The desk lamp assembly 3 includes an adjustable lighting lamp 3-1, a BH1750 light sensor 3-2, and a K210 camera 3-3. The elbow support assembly 4 includes a support frame 4-1 and an elbow support plate 4-2. The elbow support plate 4-2 is equipped with a pressure sensor 4-3 and a heart rate and pulse oximeter 4-4. The chin rest assembly 5 is located between the two elbow support assemblies 4. The chin rest assembly 5 includes two adjustable frames 5-1, a chin rest plate 5-2, and a chest rest 5-3. The chin rest plate 5-2 and the chest rest 5-3 are respectively equipped with pressure sensors. Sensor 2 (5-4) and pressure sensor 3 (5-5); the tabletop 2 is supported by the lifting assembly 1 and is convex in shape. A chin support assembly 5 is installed in the middle of the protrusion, and elbow support assemblies 4 are installed on both sides. A built-in controller 6 is also included. The controller 6 has a built-in power supply module 6-1, connects to various functional modules through a heterogeneous communication architecture 6-2, connects to the BH1750 light sensor 3-2 and heart rate and pulse oximeter 4-4 through the I²C bus, connects to the K210 camera 3-3 through the SPI+DMA channel, collects analog signals from pressure sensor 1 (4-3), pressure sensor 2 (5-4), and pressure sensor 3 (5-5) through the ADC interface, connects to the motor driver of the lifting assembly 1 through the CAN bus, and controls the brightness of the dimmable lighting lamp 3-1 through PWM output.

[0020] Specifically, the electrical module 6-1 adopts a three-level power supply architecture: the first-level power supply uses an XL4016E1 to step down 24V to 12V; the second-level power supply includes a TPS5430DDAR that converts 12V to 5V to supply the motor drive, and an LM2596S-3.3 that converts 5V to 3.3V to supply the digital circuit; the third-level LDO includes a TPS7A4700 that generates a 2.5V analog power supply, and an LT3045 that generates a 1.8V core voltage; noise isolation is achieved between each power supply loop using an ADuM4160 digital isolator.

[0021] According to another embodiment of the present invention, the controller 6 further includes an STM32F407ZGT6 main control chip 6-3, whose peripheral interface configuration includes connecting to a BH1750 light sensor via I²C1 interface pins PB6 / PB7, connecting to a heart rate and pulse oximeter via I²C2 interface pins PB10 / PC12, connecting to a K210 camera via SPI2 interface pins PC10 / PC11 / PC12, acquiring pressure sensor signals via ADC1 channel 4-6 pins PC1-PC3, outputting a PWM dimming signal via TIM1_CH1 pin PE9, and connecting to a lifting motor driver via CAN2 interface pins PB8 / PB9.

[0022] According to another embodiment of the present invention, the heterogeneous communication frame 6-2 further includes a communication module, specifically an ESP32-WROOM-32E module, which communicates with the main control chip 6-3 via USART3 pins PD8 / PD9.

[0023] Specifically, the heterogeneous communication architecture 6-2 includes a wireless transmission layer, a local bus layer, and a device layer. The wireless transmission layer is a communication module, which adopts the ESP32-WROOM-32E module and communicates with the main control chip 6-3 through USART3 (PD8 / PD9). The local bus layer includes a CAN bus network connected to the lifting component 1 through a TJA1050T transceiver and an RS-485 bus connected to the peripheral expansion module through a MAX3485 chip. The device layer uses an I²C bus to connect to digital sensors, SPI+DMA to transmit visual data, and a dedicated PWM channel to control the lighting brightness.

[0024] According to another embodiment of the present invention, the elbow support plate 4-2 is an arc-shaped design structure, with an inner elbow pad 4-2-1 made of polyurethane foam HA30 material in the middle, and two elastic arm straps 4-2-2 on both sides.

[0025] According to another embodiment of the present invention, the support frame 4-1 further includes a main support rod 4-1-1 and a secondary support rod 4-1-2; the supporting part of the main support rod 4-1-1 is welded to the elbow support plate 4-2, and the secondary support rod 4-1-2 is sleeved on the outside; the surfaces of the main support rod 4-1-1 and the secondary support rod 4-1-2 are provided with a plurality of sets of adjusting threaded holes 4-1-3, and adjusting screws 4-1-4 are provided in the threaded holes 4-1-3; the bottom of the secondary support rod 4-1-2 is welded to the table 2 through a positioning block 4-1-5.

[0026] According to another embodiment of the present invention, the chin support assembly 5 further includes two sets of adjustment frames 5-1, a chin support plate 5-2 and a chest rest 5-3. The two sets of adjustment frames 5-1 are arranged in parallel, and their backs are slidably connected to the table 2 via a locking block 5-1-1. The chest rest 5-3 is provided in the middle, and the chin support plate 5-2 is installed on the top.

[0027] The specific operation process involves adjusting the main support rod 4-1-1 and the secondary support rod 4-1-2, along with the adjustment bracket 5-1, to a suitable height and angle based on the student's body shape. The posture is then checked using the K210 camera 3-3, pressure sensor 1 4-3, pressure sensor 2 5-4, and pressure sensor 3 5-5. Specifically, the K210 camera 3-3 is adjusted so that the student's face is centered within the camera's field of view when seated. The camera module first determines if the image contains a face. If a face is present, its position is marked with a red matrix box, and the coordinates of the four vertices of the face are obtained. If the shortest distance between the left or right vertex coordinate and the image border is less than 25% of the image width, or the shortest distance between the top or bottom vertex coordinate and the image border is less than 25% of the image height, then the student's posture may be incorrect. Based on the values ​​of pressure sensors 1 4-3, 2 5-4, and 3 5-5, an elbow pressure difference greater than 20N indicates an incorrect posture. When the ambient light intensity is below 300 lux, the PWM duty cycle increases linearly, adjusting the brightness of the dimmable lighting lamp 3-1.

[0028] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A sit-standing desk characterized in that, The system includes a lifting assembly (1) and a tabletop (2), as well as a desk lamp assembly (3) located on the rear side of the tabletop (2), an elbow support assembly (4) located on the front side, and a chin rest assembly (5); the desk lamp assembly (3) includes a dimmable light lamp (3-1), a BH1750 light sensor (3-2), and a K210 camera (3-3); the elbow support assembly (4) includes a support frame (4-1) and an elbow support plate (4-2), the elbow support plate (4-2) is equipped with a pressure sensor (4-3) and a heart rate and pulse oximeter (4-4) inside, and a chin rest assembly (5) is located between the two elbow support assemblies (4), the chin rest assembly (5) includes two adjustable frames (5-1), a chin rest plate (5-2), and a chest rest (5-3); the chin rest plate (5-2) and the chest rest (5-3) are respectively equipped with a pressure sensor (5-3). -4) and pressure sensor three (5-5); the table (2) is supported by the lifting assembly (1), and is convex in shape. The chin support assembly (5) is installed in the middle of the protrusion, and the elbow support assembly (4) is installed on both sides. The controller (6) is built-in; the controller (6) has a built-in power supply module (6-1), connects to each functional module through the heterogeneous communication architecture (6-2), connects to the BH1750 light sensor (3-2) and heart rate and blood oxygen meter (4-4) through the I²C bus, connects to the K210 camera (3-3) through the SPI+DMA channel, collects the analog signals of pressure sensor one (4-3), pressure sensor two (5-4) and pressure sensor three (5-5) through the ADC interface, connects to the motor driver of the lifting assembly (1) through the CAN bus, and controls the brightness of the dimmable lighting lamp (3-1) through PWM output.

2. The sit-standing lift table according to claim 1, wherein The main control chip (6-3) of the controller (6) adopts STM32F407ZGT6. Its peripheral interface configuration includes connecting the BH1750 light sensor (3-2) through the I²C1 interface pin PB6 / PB7, connecting the heart rate and blood oxygen meter (4-4) through the I²C2 interface pin PB10 / PC12, connecting the K210 camera (3-3) through the SPI2 interface pin PC10 / PC11 / PC12, acquiring the pressure sensor signal through the ADC1 channel 4-6 pin PC1-PC3, outputting the PWM dimming signal through the TIM1_CH1 pin PE9, and connecting the lifting motor driver through the CAN2 interface pin PB8 / PB9.

3. The sit-standing lift table according to claim 1, wherein The heterogeneous communication architecture (6-2) includes a communication module, which is an ESP32-WROOM-32E module, and communicates with the main control chip (6-3) through the USART3 pins PD8 / PD9.

4. The sit-standing lift table according to claim 1, wherein The elbow support plate (4-2) has an arc-shaped design structure, with an inner elbow pad (4-2-1) made of polyurethane foam (HA30) material in the middle, and two elastic armbands (4-2-2) on both sides.

5. The sit-standing lift table according to claim 1, wherein The support frame (4-1) includes a main support rod (4-1-1) and a secondary support rod (4-1-2); the supporting part of the main support rod (4-1-1) is welded to the elbow plate (4-2), and the secondary support rod (4-1-2) is sleeved on the outside; the surfaces of the main support rod (4-1-1) and the secondary support rod (4-1-2) are provided with a number of sets of adjusting threaded holes (4-1-3), and adjusting screws (4-1-4) are provided in the threaded holes (4-1-3); the bottom of the secondary support rod (4-1-2) is welded to the table (2) through a positioning block (4-1-5).

6. The sit-standing lift table according to claim 5, wherein The chin support assembly (5) includes two sets of adjustment frames (5-1), a chin support plate (5-2) and a chest rest (5-3). The two sets of adjustment frames (5-1) are arranged in parallel and are slidably connected to the table (2) on the back by a locking block (5-1-1). The chest rest (5-3) is provided in the middle and the chin support plate (5-2) is installed on the top.

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