Search

CN-122004593-A - Lifting table control method and device and lifting table

CN122004593ACN 122004593 ACN122004593 ACN 122004593ACN-122004593-A

Abstract

The invention discloses a lifting table control method and device and a lifting table, and relates to the technical field of intelligent office tables, and the method comprises the following steps: pressure distribution data acquired by the pressure sensor array and distance data between a human body and a table edge acquired by the infrared ranging sensor are acquired in real time. According to the invention, dynamic coordinate data of the center of gravity is captured through the arrangement of the pressure sensor, the infrared ranging sensor, the annular lamp belt, the microprocessor, the touch sensing unit, the voice prompter and the like, so that the invisible posture deviation of scoliosis, unilateral compression and the like can be accurately quantified, and a multilevel intervention strategy is output according to the deviation degree, so that the deviation correcting process is more targeted and scientific, the micro-step lifting below the human body sensing threshold is realized, the induction without sense is completed, the sitting posture is guided to be corrected by using physiological instinct under the condition that the user cannot feel interference, and the deep fusion of health intervention and concentration office is realized.

Inventors

  • LEI JILIN
  • Shu Chunyuan

Assignees

  • 昆明理工大学

Dates

Publication Date
20260512
Application Date
20260210

Claims (10)

  1. 1. The control method of the lifting table is characterized by comprising the following steps of: acquiring pressure distribution data acquired by a pressure sensor array in real time and distance data between a human body and a table edge acquired by an infrared ranging sensor; Calculating barycentric coordinates of the user based on the pressure distribution data, and calculating to obtain attitude evaluation parameters according to the offset of the barycentric coordinates relative to preset standard coordinates and the offset of the distance data relative to the preset standard distance; assessment of pose parameters With a preset first threshold value And a second threshold value A comparison is made, wherein, ; If the posture evaluation parameters meet And is also provided with Controlling a driving motor of the lifting table to drive the table plate at a first speed to adjust the height, and controlling an annular lamp strip arranged on the table plate to send out visual prompt signals; if the posture evaluation parameters meet And controlling the touch sensing unit of the lifting table to output a touch feedback signal and controlling the voice prompt to output a voice prompt signal.
  2. 2. A control method of a lifting table according to claim 1, wherein the posture evaluation parameter is calculated The formula is as follows: ; Wherein, the A module length of a two-dimensional offset vector representing the barycentric coordinates relative to preset standard coordinates; Representing the deviation of the distance data relative to a preset standard distance, and alpha and beta are preset weighting coefficients.
  3. 3. The method of claim 1, wherein the first speed is in a range of 0.1-5mm/s.
  4. 4. A lifting control method according to claim 1, wherein if the posture evaluation parameter satisfies And is also provided with Further comprising: and controlling the driving motor to run according to a preset speed change curve so that the starting and stopping acceleration of the desk plate is lower than the human body perception threshold.
  5. 5. A lifting table control device, comprising: A microprocessor; the memory is electrically connected with the microprocessor and used for storing preset standard coordinates, standard distances, a first threshold value, a second threshold value and program instructions; the sensor interface is electrically connected with the microprocessor and is used for accessing the pressure sensor and the infrared ranging sensor; the motor driver is electrically connected with the microprocessor and used for driving the driving motor; the prompter controller is electrically connected with the microprocessor and is used for driving the annular lamp belt and the touch sensing unit; Wherein the microprocessor, by executing program instructions, is configured to carry out the method steps of any of claims 1-4.
  6. 6. A lifting table, comprising: a table plate; the array is embedded with the pressure sensor at the top of the desk plate and the infrared ranging sensor is arranged on the desk plate; the annular lamp strip is embedded in the peripheral edge of the table plate, and the touch sensing unit is arranged at the bottom of the table plate; the lifting upright post assemblies are symmetrically arranged at the bottom of the table plate and comprise vertical lifting columns and horizontal fixing seats fixedly arranged at the tops of the vertical lifting columns; The bottom driving assembly comprises a vertical fixed cylinder, a driving motor, a screw rod fixedly arranged at the output end of the driving motor and a screw rod nut pair in threaded connection with the screw rod; a lifting table control device; The pressure sensor and the infrared ranging sensor are electrically connected with a sensor interface of the lifting table control device, the driving motor is electrically connected with the motor driver, and the annular lamp belt and the touch sensing unit are electrically connected with the prompter controller.
  7. 7. The elevating table as set forth in claim 6, further comprising a voice prompt installed on the outer wall of the horizontal fixing base, and electrically connected to the prompt controller of the elevating table control apparatus.
  8. 8. The lifting table as recited in claim 6, further comprising a control panel fixedly disposed on a side of the table and communicatively coupled to the microprocessor of the lifting table control device.
  9. 9. The lifting table of claim 6, wherein the bottom drive assembly further comprises a return spring, and wherein the return spring is sleeved outside the screw.
  10. 10. The lifting table of claim 9, wherein a nut sleeve is fixedly arranged on the screw-nut pair, and the top of the nut sleeve is fixedly connected with the bottom of the horizontal fixing seat.

Description

Lifting table control method and device and lifting table Technical Field The invention relates to the technical field of intelligent office tables, in particular to a lifting table control method and device and a lifting table. Background The intelligent office table is office furniture combining intelligent science and technology and humanized design, and aims to improve working efficiency and working comfort. The intelligent office table can help to improve the working efficiency. The height of the desk plate can be automatically adjusted through the built-in electric lifting mechanism, so that the desk plate is suitable for different working scenes and personal requirements. With the advanced change of modern society office modes, sedentary office has become a normal state for computer practitioners, scientific researchers and student groups. The fixed sitting posture is maintained for a long time, and especially, the bad sitting posture such as scoliosis, gravity center deviation or excessive forward tilting is accompanied, so that the occupational health problems such as cervical spondylosis, lumbar disc herniation and scapulohumeral periarthritis are easily caused. In order to alleviate the negative effects caused by sedentary sitting, a lifting office table has been widely used in recent years as a healthy office table that can be switched between sitting and standing postures. In the prior art, the lifting office table and the auxiliary system thereof still have the following remarkable defects in actual use: First, the interactive feedback mode is too passive and stiff. The 'reminding deviation correcting' function of most intelligent lifting tables on the market at present mainly depends on a timing alarm clock or a popup window alarm with preset duration. The intervention mode is essentially an instruction type reminding, and the current working state of the user is completely ignored. When the user is in a deep thinking or high-intensity work task, the sudden alarm sound or vibration can forcibly interrupt the thinking flow of the user, so that the user experience is extremely poor, and a plurality of users select an active closing reminding function due to boredom, so that the health intervention mechanism is similar to a dummy. Secondly, the accuracy and dimension of gesture recognition are seriously insufficient. The existing intelligent table monitoring scheme generally adopts simple pressure sensing or human infrared sensing, and the core logic can only judge whether a user is in-place or out-of-place. However, in an actual office scenario, the most harmful to health is "invisible posture deviation" in a sitting state, such as a shift of the center of gravity to one side due to long-term single-hand operation of the mouse, excessive forward tilting of the head due to visual fatigue, and the like. The existing single-mode induction technology is difficult to extract dynamic characteristics of the gravity center of a user, and complex sitting posture deviation indexes cannot be quantitatively evaluated, so that targeted adjustment suggestions are difficult to be given. Finally, the mechanical adjustment logic is not sufficiently tightly coupled with ergonomics. The traditional lifting table actuating mechanism is manually or simply electrically regulated, and the lifting action of the traditional lifting table actuating mechanism has obvious instantaneity and visibility. When the system detects the attitude problem and triggers the adjustment, obvious visual and mechanical vibration interference can be generated if the lifting speed of the upright post is too high, and the system cannot play a substantial attitude correction role if the system is not adjusted at all. The prior art lacks a closed-loop control scheme which can cooperate with human body biofeedback and adjust microscopic physical parameters on the premise of not causing subjective perception of users. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a lifting table control method and device and a lifting table. In order to achieve the above object, the technical scheme of the present invention is as follows: A control method of a lifting table comprises the following steps: acquiring pressure distribution data acquired by a pressure sensor array in real time and distance data between a human body and a table edge acquired by an infrared ranging sensor; Calculating barycentric coordinates of the user based on the pressure distribution data, and calculating to obtain attitude evaluation parameters according to the offset of the barycentric coordinates relative to preset standard coordinates and the offset of the distance data relative to the preset standard distance; assessment of pose parameters With a preset first threshold valueAnd a second threshold valueA comparison is made, wherein,; If the posture evaluation parameters meetAnd is also provided withControlling a driving motor of the lif