WO2023280193A1 - 一种具有智能调整功能的升降桌、升降桌智能调整方法 - Google Patents

一种具有智能调整功能的升降桌、升降桌智能调整方法 Download PDF

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Publication number
WO2023280193A1
WO2023280193A1 PCT/CN2022/104054 CN2022104054W WO2023280193A1 WO 2023280193 A1 WO2023280193 A1 WO 2023280193A1 CN 2022104054 W CN2022104054 W CN 2022104054W WO 2023280193 A1 WO2023280193 A1 WO 2023280193A1
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Prior art keywords
unit
user
intelligent
height
detection unit
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PCT/CN2022/104054
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English (en)
French (fr)
Inventor
马涛
王肖明
王科亭
虞红潮
李强
俞鹏飞
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永艺家具股份有限公司
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Application filed by 永艺家具股份有限公司 filed Critical 永艺家具股份有限公司
Priority to EP22785913.9A priority Critical patent/EP4368062A1/en
Priority to US17/909,399 priority patent/US20240197071A1/en
Publication of WO2023280193A1 publication Critical patent/WO2023280193A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0062—Electronically user-adaptable, height-adjustable desk or table
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/08—Arrangements for controlling the speed or torque of a single motor

Definitions

  • the invention specifically relates to a lifting table with an intelligent adjustment function and an intelligent adjustment method for the lifting table.
  • the present invention provides an adjustable desk with intelligent adjustment function and an intelligent adjustment method for the adjustable desk, which can solve the health problems caused by the user using the adjustable desk in a single posture for a long time.
  • An adjustable table with intelligent adjustment function comprising an adjustable table body, and an intelligent adjustment device arranged on the adjustable table, the intelligent adjustment device includes an infrared pyroelectric detection unit, an infrared thermopile detection unit and a desktop height adjustment unit;
  • the desktop height adjustment unit includes a drive unit and a motor unit, the motor unit includes a motor and a transmission device, and the transmission device is connected between the motor and the adjustable desktop of the lift table body, the infrared pyroelectric detection unit and The infrared thermopile detection units are all connected to the drive unit.
  • the infrared pyroelectric detection unit adopts an infrared pyroelectric sensor.
  • the infrared thermopile detection unit adopts an infrared thermopile sensor.
  • the transmission device is a transmission gearbox.
  • the drive unit includes a PID control unit, a PWM generator, an H-bridge driver, and a Hall signal capture unit, the Hall signal capture unit is electrically connected to the PID control unit, and the PID control unit is also electrically connected to to a PWM generator electrically connected to the H-bridge driver.
  • the motor unit further includes a Hall sensor, the motor winding is connected to the H-bridge driver, and the Hall sensor is connected to the Hall signal capture unit.
  • the intelligent adjustment device further includes a desktop height detection unit and an intelligent determination unit; the desktop height detection unit is used to detect the current height of the lift table, and the intelligent determination unit is used to determine whether the user is in a sitting position for a long time ; The desktop height adjustment unit is used to adjust the height of the lift table from the current height to the target height according to the height information.
  • An intelligent adjustment method for a lift table is realized by the above-mentioned lift table with an intelligent adjustment function, and the method includes:
  • Step S01 the intelligent determination unit determines that the current desktop height detected by the desktop height detection unit is within the user-preset sitting height range, and determines that the infrared pyroelectric detection unit and/or the infrared thermopile detection unit When the detected electrical signal meets the condition that there is user activity at the specified location, the intelligent determination unit determines that the current user is in a sitting posture;
  • Step S02 the intelligent judging unit counts when the current user is in a sitting posture, and after the duration of the current sitting posture reaches a first preset value, judges that the user is in a sedentary state and triggers the desktop height adjustment unit to work.
  • the intelligent determination unit in the step S01 judges that there are user activities at the designated location as follows, and when any one of the situations occurs, it meets the condition that there is user activity at the designated location:
  • the intelligent determination unit judges that a user has entered the designated position
  • the infrared pyroelectric detection unit When it is determined that a user enters the designated position, the infrared pyroelectric detection unit continues to detect user activity, and the intelligent determination unit judges that the user remains at the designated position;
  • the infrared thermopile detection unit When it is determined that a user enters the designated position, the infrared thermopile detection unit continues to output a low level, and the intelligent determination unit judges that the user remains at the designated position;
  • the intelligent determination unit determines that the user remains at the specified position.
  • the process in which the desktop height adjustment unit is triggered to perform non-inductive intelligent adjustment in step S02 includes:
  • the drive unit controls the soft start of the motor, and after the motor enters the running state, controls the motor to run at an ultra-low speed and uniform speed, so as to realize the non-inductive intelligent adjustment of the height of the lifting table until it reaches the user's preset standing height.
  • the process in which the desktop height adjustment unit is triggered to perform non-inductive intelligent adjustment in step S02 also includes:
  • the intelligent determination unit when it is detected that there is no user activity at the specified position, the intelligent determination unit stops the timing of the sitting posture state and clears it, and then counts the user’s leaving state, and when the user’s leaving state reaches the second preset value , the intelligent determination unit triggers the desktop height adjustment unit to restore the desktop to the preset sitting height.
  • the lifting table provided by this application detects whether the user is in a sitting posture for a long time during the user's use of the lifting table, and then intelligently adjusts the current height of the lifting table in a way that the user does not feel, so as to automatically improve the user's sitting posture.
  • Fig. 1 is a structural block diagram of the intelligent adjustment device of the present invention.
  • Fig. 2 is a block diagram of the structural composition of the desktop height adjustment unit.
  • a lift table with intelligent adjustment function is provided with an intelligent adjustment device, which includes an infrared pyroelectric detection unit for detecting whether there is user activity at a designated position of the lift table, for An infrared thermopile detection unit that detects whether there is a user at the designated position of the adjustable table and exists continuously, and a desktop height adjustment unit that adjusts the adjustable table from the current height to the target height, wherein the desktop height adjustment unit includes a drive unit and a motor unit, and the motor The unit includes a motor and a transmission device, the transmission device is connected between the motor and the adjustable desktop of the lift table body, and the infrared pyroelectric detection unit and the infrared thermopile detection unit are both connected to the drive unit.
  • the above-mentioned intelligent adjustment device also includes a desktop height detection unit for detecting the current height of the lifting table formed by the software program arranged in the drive unit and the upper computer through hardware cooperation, and is used to determine whether the user meets the intelligence requirement of being in a sitting position for a long time.
  • the determination unit is used to adjust the height of the adjustable table from the current height to the target height according to the height information.
  • Table height manual setting unit for detecting the current height of the lifting table formed by the software program arranged in the drive unit and the upper computer through hardware cooperation, and is used to determine whether the user meets the intelligence requirement of being in a sitting position for a long time.
  • the determination unit is used to adjust the height of the adjustable table from the current height to the target height according to the height information.
  • Table height manual setting unit for detecting the current height of the lifting table formed by the software program arranged in the drive unit and the upper computer through hardware cooperation, and is used to determine whether the user meets the intelligence requirement of being in a sitting position for a long time.
  • the infrared pyroelectric detection unit adopts an infrared pyroelectric sensor
  • the infrared thermopile detection unit adopts an infrared thermopile sensor
  • the transmission device is a transmission gear box.
  • the desktop height adjustment unit includes a drive unit and a motor unit
  • the drive unit S10 includes a PID control unit S101, a PWM generator S102, an H-bridge driver S103, and a Hall signal capture unit S104
  • the Hall signal capture unit is electrically connected to the PID control unit S101
  • the PID control unit S101 is electrically connected to the PWM generator S102
  • the PWM generator S102 is electrically connected to the H-bridge driver S103
  • the motor unit S20 includes a motor winding S201 , transmission gearbox S202 and Hall sensor S203
  • the motor winding S201 is connected to the H-bridge driver S103
  • the Hall sensor S203 is electrically connected to the Hall signal capture unit S104.
  • the drive of the transmission gearbox S202 can be in the form of a single motor, double motors or multiple motors, and the number of motors can be set according to the actual situation, which is not limited in this embodiment.
  • the PID control unit S101 is used to control the duty ratio of the PWM generator S102 according to the rotational speed information collected by the Hall signal capture unit S104.
  • the PWM generator S102 is used to generate PWM to realize adjustable voltage.
  • the H-bridge driver S103 is used to To apply positive and negative voltages to the winding S201 to realize the forward and reverse functions, and the Hall signal capture unit S104 is used to collect speed information.
  • Working process of the present invention can be:
  • the height of the desktop can be adjusted intelligently to remind, correct the user's active posture or switch postures.
  • step 2 the determination of user activities in step 2 is specifically described as follows:
  • thermopiles If the electrical signals of the pyroelectric and infrared thermopiles have changes in electrical signals regardless of the order within the specified interval, it is determined that the user's state has changed at this time;
  • Pyroelectric continues to detect user activities and has determined that a user has entered, and determines that the user remains at the designated location;
  • thermopile continues to output a low level and it has been determined that a user has entered, it is determined that the user remains at the designated location;
  • thermopile If the above-mentioned user activity and the continuous low output level of the infrared thermopile are detected at the same time, it will be determined that the user remains at the designated location regardless of whether it was previously determined that a user entered;
  • the pyroelectric continues to detect no user activity and the infrared thermopile continues to output a high level, which determines that the user has left the designated location.
  • step 3 the determination about the user being in a sitting posture is specifically described as follows:
  • the desktop height is within the range of the user’s preset sitting posture height, and there is user activity at the specified location, it is determined that the current user is in a sitting posture; when the desktop height is not within the sitting posture range, the logic of the non-sensing intelligent adjustment function will not be activated.
  • the non-inductive intelligent adjustment logic includes:
  • Non-inductive intelligent adjustment is to adjust the height of the desktop without attracting the user's attention
  • the adjustment method is to realize the micro movement of the desktop by controlling the soft start of the motor and the ultra-low speed uniform operation;
  • Each adjustment height is controlled within 2cm
  • Adjust the time interval according to preset in this embodiment, default 1-3 minutes
  • Soft start adjust the input voltage of the motor through PWM, so that the motor turns from a static state to a running state, and this process does not generate vibration or jitter;
  • the motor speed detection is obtained through the feedback of the Hall device, and forms a closed-loop control of the motor together with the PWM control.
  • step 4 the process of determining whether the user is in a sitting position for a long time in step 4 includes:
  • the duration of the sitting posture reaches the preset value, it is determined that the user is in the sitting posture for a long time, that is, in the sedentary state.
  • the height of the lifting table will be intelligently adjusted according to the preset speed until it reaches the user's preset standing height; if the detection information changes after the timing starts, it will be judged based on the new information whether End this sitting posture timing: During the timing process, when it is detected that there is no user activity at the specified location, it is judged that the user has left the specified location, the sitting posture timing is stopped and reset, and the user leaving time timing is started; when the user leaves the timing When the preset value is reached, the desktop will automatically return to the preset sitting height.
  • whether the sensorless intelligent intervention function of the intelligent adjustment device is activated can be manually set to be on or off.
  • the drive unit sets the previously stored starting duty ratio Duty_Start to the PWM generator S102;
  • the desktop runs slowly: the equivalent voltage applied to both ends of the motor winding S201 is not enough to make the motor run, the PWM generator S102 controls the H-bridge driver S103 at a rate of 0.2% duty cycle in 50 milliseconds, and then increases The voltage applied to both ends of the winding S201 is increased.
  • the drive unit S10 enters the PID control stage of constant speed operation;
  • PID control stage of constant speed operation as shown in the following formula and block diagram, e(k) is obtained by making a difference between the running speed Speed_Run and the target speed Speed_Target, and the PID controller unit S101 adjusts the duty cycle of the PWM generator S102 according to the speed difference To make the motor run at a low and constant speed, and then the desktop can be raised and lowered at a speed of 1mm/s;
  • the desktop will slow down and stop: the drive unit S10 will reduce the PWM duty cycle at a rate of 0.5% for 50 milliseconds.
  • the duty cycle is reduced to Duty_Start, the PWM output will be turned off, the motor will stop, and the desktop will rise and fall. stop;

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

一种具有智能调整功能的升降桌、升降桌智能调整方法。升降桌包括升降桌本体，以及设置在升降桌上的智能调整装置，智能调整装置包括红外热释电检测单元，红外热电堆检测单元和桌面高度调整单元；桌面高度调整单元包括驱动单元和电机单元，电机单元包括电机和传动装置，传动装置连接至电机和升降桌本体的可调桌面之间，红外热释电检测单元和红外热电堆检测单元均连接至驱动单元。本升降桌能够解决用户长时间单一姿势使用升降桌而引发的健康问题。

Description

一种具有智能调整功能的升降桌、升降桌智能调整方法 技术领域
本发明具体涉及一种具有智能调整功能的升降桌、升降桌智能调整方法。
 背景技术
当前，学生、上班族每天长时间地固定姿势或者不正确姿势使用桌椅，容易导致身体疲劳，生理变形，甚至疾病，而市面上现有的具有调节功能的桌椅，都需要主观上的手动调节，不能自动提醒或者纠正用户。如果工作太投入或者对时间不敏感，则会忘记对桌椅进行必要的调节。
 技术问题
因此，如何有效避免在学习、办公过程中用户久坐不起的问题，实行无感智能调节，是本领域亟待解决的技术问题。
 技术解决方案
为了解决上述问题，本发明提供了一种具有智能调整功能的升降桌、升降桌智能调整方法，能够解决用户长时间单一姿势使用升降桌而引发的健康问题。
本发明的技术方案如下所示：
一种具有智能调整功能的升降桌，包括升降桌本体，以及设置在升降桌上的智能调整装置，所述智能调整装置包括红外热释电检测单元，红外热电堆检测单元和桌面高度调整单元；所述桌面高度调整单元包括驱动单元和电机单元，所述电机单元包括电机和传动装置，所述传动装置连接至电机和升降桌本体的可调桌面之间，所述红外热释电检测单元和红外热电堆检测单元均连接至驱动单元。
优选的，所述红外热释电检测单元采用红外热释电传感器。
优选的，所述红外热电堆检测单元采用红外热电堆传感器。
优选的，所述传动装置为传动齿轮箱。
优选的，所述驱动单元包括PID控制单元、PWM发生器、H桥驱动器、霍尔信号捕获单元，所述霍尔信号捕获单元电性连接至PID控制单元，所述PID控制单元还电性连接至PWM发生器，所述PWM发生器电性连接至H桥驱动器。
优选的，所述电机单元还包括霍尔传感器，所述电机绕组连接至H桥驱动器，所述霍尔传感器连接至霍尔信号捕获单元。
优选的，所述智能调整装置还包括桌面高度检测单元、智能判定单元；所述桌面高度检测单元用于检测升降桌的当前高度，所述智能判定单元用于判定用户是否符合长时间处于坐姿状态；所述桌面高度调整单元用于根据高度信息将升降桌从当前高度调整至目标高度。
一种升降桌智能调整方法，由上述一种具有智能调整功能的升降桌实现，方法包括：
步骤S01，所述智能判定单元判断所述桌面高度检测单元检测到的当前桌面高度处于用户预设的坐姿高度范围，且判断所述红外热释电检测单元和/或所述红外热电堆检测单元检测的电信号符合指定位置有用户活动的条件时，所述智能判定单元判定当前用户处于坐姿状态；
步骤S02，所述智能判定单元对当前用户处于坐姿状态进行计时，并在当前坐姿时长达到第一预设数值后，判定用户处于久坐状态并触发所述桌面高度调整单元工作。
优选的，所述步骤S01中所述智能判定单元判断指定位置有用户活动的情况有如下多种，当任意一种情况发生时，则符合指定位置有用户活动的条件：
如果设定时间间隔内，当所述红外热释电检测单元或所述红外热电堆检测单元的电信号从高电平向低电平翻转时，所述智能判定单元判断有用户进入指定位置；
当判定有用户进入指定位置时，所述红外热释电检测单元持续检测到有用户活动，所述智能判定单元判断用户维持在指定位置；
当判定有用户进入指定位置时，所述红外热电堆检测单元持续输出低电平，所述智能判定单元判断用户维持在指定位置；
如果当红外热释电检测单元持续检测到有用户活动，且红外热电堆检测单元持续输出低电平时，所述智能判定单元判断用户维持在指定位置。
优选的，所述步骤S02中桌面高度调整单元被触发进行无感智能调整的过程包括：
所述驱动单元控制电机软启动，并在电机进入运转状态后，控制电机超低速匀速运转，以实现无感智能调整升降桌高度，直至达到用户预设的站姿高度。
优选的，所述步骤S02中桌面高度调整单元被触发进行无感智能调整的过程还包括：
在无感智能调整期间，当检测到指定位置上不再有用户活动时，所述智能判定单元停止坐姿状态计时并清零，继而对用户离开状态计时，当用户离开状态达到第二预设数值时，所述智能判定单元触发桌面高度调整单元将桌面回复到预设坐姿高度。
 有益效果
本发明的技术效果为：
本申请提供的升降桌，更多在用户使用升降桌的过程中，检测用户是否长期处于坐姿状态，是则以用户无感的方式智能调整升降桌的当前高度，以自动改善用户的坐姿。
 附图说明
图1为本发明的智能调整装置的结构组成框图。
图2为桌面高度调整单元的结构组成框图。
 本发明的实施方式
下面将结合说明书附图对本发明的实施例进行详细说明。
如图1所示，一种具有智能调整功能的升降桌，设置有智能调整装置，智能调整装置中包括用于检测升降桌的指定位置上是否有用户活动的红外热释电检测单元，用于检测升降桌的指定位置上是否有用户存在且持续存在的红外热电堆检测单元，将升降桌从当前高度调整至目标高度的桌面高度调整单元，其中桌面高度调整单元包括驱动单元和电机单元，电机单元包括电机和传动装置，传动装置连接至电机和升降桌本体的可调桌面之间，红外热释电检测单元和红外热电堆检测单元均连接至驱动单元。
上述智能调整装置中还包括设置于驱动单元和上位机中的软件程序通过硬件配合形成的用于检测升降桌的当前高度的桌面高度检测单元，用于判定用户是否符合长时间处于坐姿状态的智能判定单元，用于根据高度信息将升降桌从当前高度调整至目标高度的桌面高度调整单元，用于客户预设坐姿范围和站姿范围的桌面高度设置参数单元，用于客户进行主观高度调整的桌面高度手动设置单元。
上述软件程序均采用现有技术中已知的程序，在本实施例中不做限定和保护。
其中，作为本发明的一种实施方式，红外热释电检测单元采用红外热释电传感器，红外热电堆检测单元采用红外热电堆传感器，传动装置为传动齿轮箱。
作为本发明的一种实施方式，如图2所示，桌面高度调整单元包括驱动单元和电机单元，驱动单元S10包括PID控制单元S101、PWM发生器S102、H桥驱动器S103、霍尔信号捕获单元S104，霍尔信号捕获单元电性连接至PID控制单元S101，PID控制单元S101电性连接至PWM发生器S102，PWM发生器S102电性连接至H桥驱动器S103；其中电机单元S20包括电机绕组S201、传动齿轮箱S202和霍尔传感器S203，电机绕组S201连接至H桥驱动器S103，霍尔传感器S203电性连接至霍尔信号捕获单元S104。
其中，传动齿轮箱S202的驱动可采用单电机、双电机或多电机的形式，电机数量可根据实际情况来设置，本实施例中不做限定。
其中PID控制单元S101用于根据霍尔信号捕获单元S104采集到的转速信息控制PWM发生器S102的占空比，PWM发生器S102，用于产生PWM，实现可调电压，H桥驱动器S103，用于给绕组S201施加正反电压，实现正反转功能，霍尔信号捕获单元S104，用于采集转速信息。
本发明的工作过程可以为：
1、智能调整装置初始化；
2、利用红外热释电检测检测升降桌的指定位置上是否有用户活动，利用红外热电堆检测升降桌指定位置实是否有用户持续存在；
3、利用高度检测对当前桌面高度进行检测，以判别用户是否处于坐姿；
4、当检测到升降桌高度处于用户坐姿范围且在指定位置上有用户活动时，实时判定用户是否长时间处于坐姿状态；
5、若用户长时间处于坐姿状态，则无感智能调整桌面高度以提醒、纠正用户活动姿势或者切换姿势。
其中，步骤2中关于用户活动的判定，具体说明如下：
如果热释电和红外热电堆的电信号在规定间隔时间内不分先后的均有电信号的变化，则判定此时用户的状态有改变；
如果设定时间间隔内从高电平向低电平翻转，则判定有用户进入指定位置；
如果设定时间间隔内从低电平向高电平翻转，则判定用户离开指定位置；
热释电持续检测到有用户活动，且已经判定有用户进入的情况下，判定用户维持在指定位置；
红外热电堆持续输出低电平，且已经判定有用户进入的情况下，判定用户维持在指定位置；
如果上述用户活动和红外热电堆持续输出低电平同时被检测到，则无论先前是否判定有用户进入，都判定用户维持在指定位置；
热释电持续检测不到有用户活动且红外热电堆持续输出高电平，判定用户离开了指定位置。
其中，步骤3中关于用户处于坐姿的判定，具体说明如下：
当桌面高度处于用户预设的坐姿高度范围内时，且指定位置有用户活动，判定当前用户处于坐姿；桌面高度不在坐姿范围内时，无感智能调整功能逻辑不会被激活。
其中，无感智能调整逻辑包括：
无感智能调节就是在不引起用户注意的情况下进行桌面高度调节；
调节的方式是通过控制电机的软起动和超低速匀速运转，实现桌面的微动；
每次调节高度控制在2cm以内；
调整时间间隔按照预设(本实施例中默认1-3分钟)；
软启动：通过PWM调整电机的输入电压，使电机从静止状态转入运转状态，此过程不产生振动或者抖动；
保持超低速运转：在电机进入运转状态后，通过设置合理的PWM保持电机超低速匀速运转；
电机转速检测是通过霍尔器件的反馈获取的，与PWM控制一起形成对电机的闭环控制。
其中，步骤4中判定用户是否长时间处于坐姿状态的过程包括：
当检测到升降桌高度处于用户坐姿范围且在指定位置上有用户活动时，开始计时，以获得指定位置用户的坐姿时长；
当坐姿时长达到预设数值后，判定用户长时间处于坐姿状态，即处于久坐状态。
当判定用户处于久坐状态后，则按照预设速度无感智能调整升降桌的高度，直至达到用户预设的站姿高度；若计时开始后，检测信息发生变化，则根据新的信息判定是否结束本次坐姿时长计时：在计时过程中，当检测到指定位置上不再有用户活动时，则判断用户离开了指定位置，停止坐姿计时并清零，开始用户离开时间计时；当用户离开计时达到预设数值，则桌面自动回复到预设坐姿高度。
其中，智能调整装置的无感智能干预功能是否启动可以手动设置开启或者关闭。
其中，桌面高度调整经驱动单元S10、电机单元S20调控的具体过程为：
1、系统收到运行指令后，设置超低目标转速Speed_Target，换算为桌面升降速度为1mm/s，使能霍尔信号捕获单元S104，转换霍尔传感器S203的输出信号，得到实际运行转速Speed_Run和位置信息；
2、接下来H桥驱动器S103上桥臂导通，另一桥臂受PWM发生器S102控制：驱动单元将先前存储的启动占空比Duty_Start设置到PWM发生器S102中；
3、启动阶段，桌面缓慢运行：前面施加在电机绕组S201两端的等效电压还不足以让电机运转，PWM发生器S102以50毫秒增加0.2％占空比的速率控制H桥驱动器S103，进而加大了施加到绕组S201两端电压。持续增加到有转速和位置信号变化时，驱动单元S10进入恒转速运行PID控制阶段；
4、恒转速运行PID控制阶段：如下面公式和框图所示,将运行转速Speed_Run和目标转速Speed_Target作差得到e(k)，PID控制器单元S101根据转速差调整PWM发生器S102的占空比以使电机低恒转速运行，进而桌面以1mm/s的速度进行升降；
PWM_Duty＝Kp*e(k)+Ki*∑e(k)+Kd[e(k)-e(k-1)]
5、将恒转速运行时的PWM占空比作积分平均，然后乘以0.7作为下次启动的初始占空比；
6、桌面升降5mm时，桌面进行降速停止：驱动单元S10以50毫秒减小0.5％的速率控制PWM占空比，当占空比降低到Duty_Start时，关断PWM输出，电机停止，桌面升降停止；
7、停止等待60秒后，进入下一个“启动-运行-停止”循环，重复步骤1到6，直到到达用户预设的高度。
最后应说明的是：以上所述实施例，仅为本发明的具体实施方式，用以说明本发明的技术方案，而非对其限制，本发明的保护范围并不局限于此，尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，其依然可以对前述实施例所记载的技术方案进行修改或可轻易想到变化，或者对其中部分技术特征进行等同替换；而这些修改、变化或者替换，并不使相应技术方案的本质脱离本发明实施例技术方案的精神和范围。都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (11)

  1. 一种具有智能调整功能的升降桌，其特征在于，包括升降桌本体，以及设置在升降桌上的智能调整装置，所述智能调整装置包括红外热释电检测单元，红外热电堆检测单元和桌面高度调整单元；所述桌面高度调整单元包括驱动单元和电机单元，所述电机单元包括电机绕组和传动装置，所述传动装置连接至电机和升降桌本体的可调桌面之间，所述红外热释电检测单元和红外热电堆检测单元均连接至驱动单元。
  2. 根据权利要求 1 所述的具有智能调整功能的升降桌，其特征在于，所述红外热释电检测单元采用红外热释电传感器。
  3. 根据权利要求 1 所述的具有智能调整功能的升降桌，其特征在于，所述红外热电堆检测单元采用红外热电堆传感器。
  4. 根据权利要求 1 所述的具有智能调整功能的升降桌，其特征在于，所述传动装置为传动齿轮箱。
  5. 根据权利要求 1 所述的具有智能调整功能的升降桌，其特征在于，所述驱动单元包括 PID 控制单元、PWM 发生器、H 桥驱动器、霍尔信号捕获单元，所述霍尔信号捕获单元电性连接至 PID 控制单元，所述 PID 控制单元还电性连接至PWM 发生器，所述 PWM 发生器电性连接至 H 桥驱动器。
  6. 根据权利要求 5 所述的具有智能调整功能的升降桌，其特征在于，所述电机单元还包括霍尔传感器，所述电机绕组连接至 H 桥驱动器，所述霍尔传感器连接至霍尔信号捕获单元。
  7. 根据权利要求1所述的一种具有智能调整功能的升降桌，其特征在于，所述智能调整装置还包括桌面高度检测单元、智能判定单元；所述桌面高度检测单元用于检测升降桌的当前高度，所述智能判定单元用于判定用户是否符合长时间处于坐姿状态；所述桌面高度调整单元用于根据高度信息将升降桌从当前高度调整至目标高度。
  8. 一种升降桌智能调整方法，其特征在于，由权利要求7所述的一种具有智能调整功能的升降桌实现，方法包括：
    步骤S01，所述智能判定单元判断所述桌面高度检测单元检测到的当前桌面高度处于用户预设的坐姿高度范围，且判断所述红外热释电检测单元和/或所述红外热电堆检测单元检测的电信号符合指定位置有用户活动的条件时，所述智能判定单元判定当前用户处于坐姿状态；
    步骤S02，所述智能判定单元对当前用户处于坐姿状态进行计时，并在当前坐姿时长达到第一预设数值后，判定用户处于久坐状态并触发所述桌面高度调整单元工作。
  9. 根据权利要求8所述的一种升降桌智能调整方法，其特征在于，所述步骤S01中所述智能判定单元判断指定位置有用户活动的情况有如下多种，当任意一种情况发生时，则符合指定位置有用户活动的条件：
    如果设定时间间隔内，当所述红外热释电检测单元或所述红外热电堆检测单元的电信号从高电平向低电平翻转时，所述智能判定单元判断有用户进入指定位置；
    当判定有用户进入指定位置时，所述红外热释电检测单元持续检测到有用户活动，所述智能判定单元判断用户维持在指定位置；
    当判定有用户进入指定位置时，所述红外热电堆检测单元持续输出低电平，所述智能判定单元判断用户维持在指定位置；
    如果当红外热释电检测单元持续检测到有用户活动，且红外热电堆检测单元持续输出低电平时，所述智能判定单元判断用户维持在指定位置。
  10. 根据权利要求8所述的一种升降桌智能调整方法，其特征在于，所述步骤S02中桌面高度调整单元被触发进行无感智能调整的过程包括：
    所述驱动单元控制电机软启动，并在电机进入运转状态后，控制电机超低速匀速运转，以实现无感智能调整升降桌高度，直至达到用户预设的站姿高度。
  11. 根据权利要求10所述的一种升降桌智能调整方法，其特征在于，所述步骤S02中桌面高度调整单元被触发进行无感智能调整的过程还包括：
    在无感智能调整期间，当检测到指定位置上不再有用户活动时，所述智能判定单元停止坐姿状态计时并清零，继而对用户离开状态计时，当用户离开状态达到第二预设数值时，所述智能判定单元触发桌面高度调整单元将桌面回复到预设坐姿高度。
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CN117981965B (zh) * 2024-04-07 2024-06-11 圣奥科技股份有限公司 一种办公桌椅的控制方法及系统

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