A control method and system for reducing standby power consumption of a lifting table and a lifting table

Abstract

The application provides a control method and system for reducing standby power consumption of a lifting table and the lifting table. The control method for reducing standby power consumption of the lifting table comprises: when the lifting table is in a standby mode, controlling a power supply of the lifting table to enter a semi-sleep state; when the lifting table receives a lifting instruction, controlling the power supply of the lifting table to enter a working state from the semi-sleep state; wherein when the power supply of the lifting table is in the semi-sleep state, a power output voltage of the power supply of the lifting table periodically changes, and the whole machine standby power consumption of the lifting table is less than 0.2 W. The application solves the technical problem of large whole machine power consumption of an electric lifting table in a standby mode.

Description

Technical Field

[0001] This invention relates to the field of height-adjustable desk technology, and more specifically, to a control method, system, and height-adjustable desk for reducing standby power consumption. Background Technology

[0002] Electric height-adjustable desks are generally powered by electricity, with an electric motor controlling a mechanical device to adjust the height. Alternatively, a compressor can control a pneumatic or hydraulic rod to adjust the height. Currently, electric height-adjustable desks typically use an electric power supply. Once the desk is in height adjustment, to save energy, the electrical system usually enters standby mode. In traditional standby mode, the control system's MCU, Hall effect sensors, and memory remain powered. The MCU enters standby mode during hibernation, while other peripherals remain powered. When the electric height-adjustable desk is in standby mode, the power supply is constantly operating at high power, resulting in high overall energy consumption and failing to meet the EU's energy-saving requirement of less than 0.5W for standby power consumption. Summary of the Invention

[0003] To address the issue of high power consumption in standby mode of electric height-adjustable desks, this invention provides a control method for reducing standby power consumption. The method includes: when the desk is in standby mode, controlling the desk power supply to enter a semi-dormant state; when the desk receives a lifting command, controlling the desk power supply to enter an operating state from the semi-dormant state; wherein, when the desk power supply is in the semi-dormant state, the power output voltage of the desk power supply changes periodically, and the overall standby power consumption of the desk is less than 0.2W.

[0004] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: When the height-adjustable desk is in standby mode, by controlling the power supply of the height-adjustable desk to enter a semi-sleep state, the power output voltage of the power supply of the height-adjustable desk can change periodically. By reducing the voltage output of the power supply of the height-adjustable desk, the standby power consumption of the power supply of the height-adjustable desk is reduced, thereby enabling the standby power consumption of the entire height-adjustable desk to be less than 0.2W, which meets the EU's energy-saving requirement of less than 0.5W for the entire standby power consumption.

[0005] In one embodiment of the present invention, when the power supply of the height-adjustable desk is in the working state, the power supply output voltage is a first output voltage; when the power supply of the height-adjustable desk is in the semi-dormant state, the power supply output voltage of the height-adjustable desk changes periodically between the first output voltage and the second output voltage; wherein, the second output voltage is less than the first output voltage.

[0006] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: By controlling the power output voltage of the power supply of the height-adjustable desk in the semi-dormant state to change periodically between the first output voltage and the second output voltage, and controlling the power output voltage of the power supply of the height-adjustable desk in the working state to be the first output voltage, and setting the second output voltage to be less than the first output voltage, the power output voltage of the height-adjustable desk can change periodically between the dormant state and the working state. This allows the power output voltage to quickly rise to the first output voltage of the working state in a short time when the loads such as the downstream motor need power, so that the power supply of the height-adjustable desk can quickly enter the high-power output state. This reduces the switching time of the height-adjustable desk from standby mode to working mode and improves the wake-up speed of the height-adjustable desk.

[0007] In one embodiment of the present invention, when the power supply of the height-adjustable desk is in the semi-dormant state, if the controller of the height-adjustable desk detects that the power output voltage of the height-adjustable desk is less than or equal to the second output voltage, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage.

[0008] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: If the controller of the height-adjustable desk detects that the power output voltage of the height-adjustable desk is less than or equal to the second output voltage, it indicates that the power output voltage of the height-adjustable desk is in a dormant state. Therefore, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage. Thus, the controller of the height-adjustable desk can perform feedback control on the power output voltage of the height-adjustable desk. The method of sending a heartbeat signal is simple and low in cost.

[0009] In one embodiment of the present invention, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage, comprising: the controller of the height-adjustable desk sending a heartbeat signal to the power controller of the height-adjustable desk; the power controller controlling the power capacitor to discharge according to the heartbeat signal, so that the power output voltage of the height-adjustable desk gradually increases from the second output voltage to the first output voltage.

[0010] Compared with existing technologies, the technical effects achieved by this solution are as follows: It utilizes the charging and discharging characteristics of the power supply capacitor to achieve a periodic change in the power output voltage of the height-adjustable desk between the first and second output voltages. Since the discharge of the power supply capacitor is a continuous process, the power output voltage of the height-adjustable desk can gradually increase from the second output voltage back to the first output voltage.

[0011] In one embodiment of the present invention, when the power supply of the height-adjustable desk enters the working state from the semi-dormant state, the power output voltage of the power supply jumps to the first output voltage, and the power supply of the height-adjustable desk enters the high-power output state.

[0012] Compared with existing technologies, the technical effect achieved by adopting this technical solution is as follows: when the power supply of the height-adjustable desk enters the working state from the semi-dormant state, the power output voltage of the power supply jumps to the first output voltage, which enables the power supply of the height-adjustable desk to quickly switch to the high-power output state in a short time.

[0013] In one embodiment of the present invention, the difference between the first output voltage and the second output voltage is less than a first difference threshold.

[0014] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: by setting the difference between the first output voltage and the second output voltage to be less than the first difference threshold, it is possible to reduce the standby power consumption of the height-adjustable desk while shortening the switching time from standby mode to working mode. This avoids the problem of excessively large differences between the first output voltage and the second output voltage leading to excessively long switching time between standby mode and working mode, as well as the problem of unstable switching caused by radiation interference.

[0015] In one embodiment of the present invention, when the controller of the height-adjustable table detects that the speed of the height-adjustable table's lifting motor is zero, the controller of the height-adjustable table sends a standby signal to the power controller of the height-adjustable table to cause the power supply of the height-adjustable table to enter a semi-dormant state.

[0016] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: When the controller of the height-adjustable table detects that the speed of the lifting motor of the height-adjustable table is zero, it means that the load such as the back-end motor is not working at this time. Therefore, it is determined that the height-adjustable table is in standby mode. The controller of the height-adjustable table sends a standby signal to the power controller of the height-adjustable table so that the power supply of the height-adjustable table enters a semi-dormant state, reducing the energy consumption of the power supply of the height-adjustable table.

[0017] This invention provides a control system for reducing the standby power consumption of an adjustable desk. The control system implements any of the control methods described above for reducing the standby power consumption of an adjustable desk. The control system includes: a first control module, used to control the power supply of the adjustable desk to enter a semi-dormant state when the adjustable desk is in standby mode; and a second control module, used to control the power supply of the adjustable desk to enter a working state from the semi-dormant state when the adjustable desk receives a lifting command. When the power supply of the adjustable desk is in the semi-dormant state, the power output voltage of the power supply changes periodically, and the overall standby power consumption of the adjustable desk is less than 0.2W.

[0018] This invention provides a height-adjustable desk, which includes a controller for executing an executable program to implement any of the control methods described above for reducing the standby power consumption of the height-adjustable desk.

[0019] By adopting the technical solution of the present invention, the following technical effects can be achieved:

[0020] (1) When the height-adjustable table is in standby mode, by controlling the power supply of the height-adjustable table to enter a semi-sleep state, the power output voltage of the power supply of the height-adjustable table can be changed periodically. By reducing the voltage output voltage of the power supply of the height-adjustable table, the standby power of the power supply of the height-adjustable table is reduced, thereby making the standby power consumption of the entire height-adjustable table less than 0.2W, which meets the EU's energy-saving requirement of less than 0.5W for the standby power consumption of the entire machine.

[0021] (2) By controlling the power output voltage of the power supply of the lifting table in the semi-dormant state to change periodically between the first output voltage and the second output voltage, and controlling the power output voltage of the power supply of the lifting table in the working state to be the first output voltage, and setting the second output voltage to be less than the first output voltage, the power output voltage of the lifting table power supply can change periodically between the dormant state and the working state. Thus, when the load such as the downstream motor needs to be powered, the power output voltage can quickly rise to the first output voltage of the working state in a short time, so that the lifting table power supply can quickly enter the high power output state, thereby reducing the switching time of the lifting table from standby mode to working mode and improving the wake-up speed of the lifting table.

[0022] (3) If the controller of the lifting table detects that the power output voltage of the lifting table is less than or equal to the second output voltage, it means that the power output voltage of the lifting table is in a dormant state. Therefore, the controller of the lifting table sends a heartbeat signal to the power controller of the lifting table so that the power output voltage of the lifting table rises to the first output voltage. Thus, the power output voltage of the lifting table can be controlled by feedback through the controller of the lifting table. The method of sending a heartbeat signal is simple and low cost. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating a control method for reducing standby power consumption of an adjustable desk, as provided by the present invention.

[0024] Figure 2 The waveform diagram shows the heartbeat signal and the corresponding power supply output voltage in the semi-dormant state.

[0025] Figure 3 This is a waveform diagram of the power supply output voltage transitioning from a semi-dormant state to a working state.

[0026] Figure 4A schematic diagram of the circuit structure of a control system for reducing the standby power consumption of an adjustable desk.

[0027] Figure 5 This is a schematic diagram of the controller U8 for the height-adjustable desk. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] See Figure 1 This is a flowchart illustrating a control method for reducing the standby power consumption of an adjustable desk provided by the present invention. The control method for reducing the standby power consumption of an adjustable desk includes, for example, the following steps: S10: When the adjustable desk is in standby mode, the power supply of the adjustable desk is controlled to enter a semi-sleep state; S20: When the adjustable desk receives a lifting command, the power supply of the adjustable desk is controlled to enter the working state from the semi-sleep state; wherein, when the power supply of the adjustable desk is in the semi-sleep state, the power output voltage of the power supply changes periodically, and the overall standby power consumption of the adjustable desk is less than 0.2W.

[0030] It is understandable that when the height-adjustable desk is in standby mode, by controlling the power supply of the height-adjustable desk to enter a semi-sleep state, the power output voltage of the power supply of the height-adjustable desk can be made to change periodically. By reducing the voltage output of the power supply of the height-adjustable desk, the standby power consumption of the power supply of the height-adjustable desk is reduced, thereby making the standby power consumption of the entire height-adjustable desk less than 0.2W, which meets the EU's energy-saving requirement of less than 0.2W for the entire standby power consumption.

[0031] Furthermore, when the power supply of the height-adjustable desk is in the working state, the power supply output voltage is the first output voltage. When the power supply of the height-adjustable desk is in the semi-dormant state, the power supply output voltage of the height-adjustable desk changes periodically between the first output voltage and the second output voltage; wherein, the second output voltage is less than the first output voltage.

[0032] It is understandable that by controlling the power output voltage of the power supply of the height-adjustable desk in the semi-dormant state to change periodically between the first output voltage and the second output voltage, and controlling the power output voltage of the power supply of the height-adjustable desk in the working state to be the first output voltage, and setting the second output voltage to be less than the first output voltage, the power output voltage of the power supply of the height-adjustable desk can change periodically between the dormant state and the working state. This allows the power output voltage to quickly rise to the first output voltage of the working state in a short time when the load such as the downstream motor needs power, so that the power supply of the height-adjustable desk can quickly enter the high-power output state. This reduces the switching time of the height-adjustable desk from standby mode to working mode and improves the wake-up speed of the height-adjustable desk.

[0033] Furthermore, when the power supply of the height-adjustable desk is in the semi-dormant state, if the controller of the height-adjustable desk detects that the power output voltage of the height-adjustable desk is less than or equal to the second output voltage, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage.

[0034] Understandably, if the controller of the height-adjustable desk detects that the power output voltage of the height-adjustable desk is less than or equal to the second output voltage, it means that the power output voltage of the height-adjustable desk is in a dormant state. Therefore, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage. In this way, the controller of the height-adjustable desk can perform feedback control on the power output voltage of the height-adjustable desk. The method of sending a heartbeat signal is simple and low cost.

[0035] Furthermore, the process of the controller of the height-adjustable desk sending a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage includes: the controller of the height-adjustable desk sending a heartbeat signal to the power controller of the height-adjustable desk; the power controller controlling the power capacitor to discharge according to the heartbeat signal, so that the power output voltage of the height-adjustable desk gradually increases from the second output voltage to the first output voltage.

[0036] It is understandable that the charging and discharging characteristics of the power supply capacitor can be used to achieve a periodic change in the power output voltage of the height-adjustable desk between the first and second output voltages. Since the discharge of the power supply capacitor is a continuous process, the power output voltage of the height-adjustable desk can gradually increase from the second output voltage back to the first output voltage.

[0037] Furthermore, when the power supply of the height-adjustable desk enters the working state from the semi-dormant state, the power output voltage of the power supply jumps to the first output voltage, and the power supply of the height-adjustable desk enters the high-power output state.

[0038] Understandably, by setting the power supply of the height-adjustable desk to jump to the first output voltage when it enters the working state from the semi-sleep state, the power supply of the height-adjustable desk can quickly switch to the high-power output state in a short time.

[0039] Furthermore, the difference between the first output voltage and the second output voltage is less than the first difference threshold.

[0040] Understandably, by setting the difference between the first output voltage and the second output voltage to be less than the first difference threshold, it is possible to reduce the standby power consumption of the height-adjustable desk while shortening the switching time from standby mode to working mode. This avoids the problem of excessively large differences between the first and second output voltages leading to long switching times between standby and working modes, as well as the problem of unstable switching caused by radiation interference.

[0041] Furthermore, when the controller of the height-adjustable table detects that the speed of the height-adjustable table's lifting motor is zero, the controller of the height-adjustable table sends a standby signal to the power controller of the height-adjustable table to put the power supply of the height-adjustable table into a semi-dormant state.

[0042] Understandably, when the controller of the height-adjustable table detects that the speed of the lifting motor of the height-adjustable table is zero, it means that the load such as the back-end motor is not working at this time. Therefore, it is determined that the height-adjustable table is in standby mode. The controller of the height-adjustable table sends a standby signal to the power controller of the height-adjustable table so that the power supply of the height-adjustable table enters a semi-dormant state, thereby reducing the energy consumption of the power supply of the height-adjustable table.

[0043] Combination Figure 2 The diagram above shows the voltage of the heartbeat signal, and the diagram below shows the corresponding output voltage waveform of the power supply for the height-adjustable desk. In one specific embodiment, when the power supply enters a semi-dormant state, whenever the output voltage of the power supply drops to 29V, the controller of the height-adjustable desk sends a heartbeat signal to the power controller, controlling the power capacitor to discharge, causing the output voltage of the power supply to gradually rise to 38.8V. For example, the controller sends a heartbeat signal every 2.78 seconds, meaning the controller activates the power supply every 2.78 seconds.

[0044] For example, combining Figure 3 When the height-adjustable desk is not moving, i.e., in standby mode, the power supply enters a semi-dormant state, during which the output voltage fluctuates periodically between 29V and 38.8V. When the desk receives a lifting command from the user via buttons or voice, the rear motors and other loads begin to operate, the power supply enters its working state, and the output voltage jumps to 38.8V, entering a high-power output state to drive the rear motors and other loads to control the desk's height adjustment.

[0045] Furthermore, this invention provides a control system for reducing the standby power consumption of a height-adjustable desk. This control system implements any of the control methods for reducing the standby power consumption of a height-adjustable desk described above, and can achieve the same effect. To avoid repetition, it will not be described again here.

[0046] The control system for reducing the standby power consumption of the height-adjustable desk includes: a first control module, used to control the power supply of the height-adjustable desk to enter a semi-sleep state when the desk is in standby mode; and a second control module, used to control the power supply of the height-adjustable desk to enter the working state from the semi-sleep state when the desk receives a height-adjustment command; wherein, when the power supply of the height-adjustable desk is in the semi-sleep state, the power output voltage of the power supply changes periodically, and the overall standby power consumption of the height-adjustable desk is less than 0.2W.

[0047] Combination Figure 4 and Figure 5 The control system for reducing the standby power consumption of the height-adjustable desk includes, for example, plug J1, fuse F1, rectifier bridge D1, filter capacitor C8 and filter capacitor C6; power controller U1, optocoupler U7, height-adjustable desk controller U8, transformer L1, power capacitor C31 and power capacitor C27, power filter capacitor C8 and power filter capacitor C6.

[0048] The height-adjustable desk controller U8 receives height-adjustment commands from the user via pins U30-33 and U30-34. Controller U8 is connected to optocoupler U7 via pin U30-30. When controller U8 sends a heartbeat signal, optocoupler U7 transmits the signal to power controller U1. Power controller U1 controls power capacitors C31 and C27 to discharge. The discharged signal is then filtered by power filter capacitors C8 and C6, causing the power supply voltage of the height-adjustable desk to periodically change between 29V and 38.8V.

[0049] Furthermore, this invention provides a height-adjustable desk, which includes a controller for executing an executable program to implement any of the control methods for reducing the standby power consumption of the height-adjustable desk as described above, and to achieve the same effect. To avoid repetition, it will not be described again here.

[0050] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A control method for reducing the standby power consumption of a height-adjustable desk, characterized in that, The control method for reducing the standby power consumption of the height-adjustable desk includes: When the lifting table is in standby mode, the power supply of the lifting table is controlled to enter a semi-sleep state; When the height-adjustable table receives a height-adjusting command, the power supply of the height-adjustable table is controlled to enter the working state from the semi-dormant state; When the power supply of the height-adjustable desk is in the semi-dormant state, the power output voltage of the power supply changes periodically, and the standby power consumption of the entire height-adjustable desk is less than 0.2W. When the power supply of the height-adjustable desk is in the working state, the power supply output voltage is the first output voltage. When the power supply of the height-adjustable desk is in the semi-dormant state, the power supply output voltage of the height-adjustable desk changes periodically between the first output voltage and the second output voltage; wherein, the second output voltage is less than the first output voltage. When the power supply of the height-adjustable desk is in the semi-dormant state, if the controller of the height-adjustable desk detects that the power output voltage of the height-adjustable desk is less than or equal to the second output voltage, the controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage.

2. The control method for reducing standby power consumption of a height-adjustable desk according to claim 1, characterized in that, The controller of the height-adjustable desk sends a heartbeat signal to the power controller of the height-adjustable desk to raise the power output voltage of the height-adjustable desk to the first output voltage, including: The controller of the height-adjustable table sends a heartbeat signal to the power controller of the height-adjustable table; The power controller controls the power capacitor to discharge according to the heartbeat signal, so that the power output voltage of the lifting table gradually increases from the second output voltage to the first output voltage.

3. The control method for reducing standby power consumption of a height-adjustable desk according to claim 1, characterized in that, When the power supply of the height-adjustable desk enters the working state from the semi-dormant state, the power output voltage of the power supply jumps to the first output voltage, and the power supply enters the high-power output state.

4. The control method for reducing standby power consumption of a height-adjustable desk according to claim 1, characterized in that, The difference between the first output voltage and the second output voltage is less than the first difference threshold.

5. The control method for reducing standby power consumption of a height-adjustable desk according to claim 1, characterized in that, When the controller of the height-adjustable table detects that the speed of the height-adjustable table's lifting motor is zero, the controller of the height-adjustable table sends a standby signal to the power controller of the height-adjustable table to put the power supply of the height-adjustable table into a semi-sleep state.

6. A control system for reducing standby power consumption of a height-adjustable desk, characterized in that, The control system for reducing the standby power consumption of the height-adjustable desk implements the control method for reducing the standby power consumption of the height-adjustable desk as described in any one of claims 1-5, wherein the control system for reducing the standby power consumption of the height-adjustable desk includes: The first control module is used to control the power supply of the lifting table to enter a semi-dormant state when the lifting table is in standby mode; The second control module is used to control the power supply of the height-adjustable table to enter the working state from the semi-dormant state when the height-adjustable table receives a height-adjusting command; When the power supply of the height-adjustable desk is in the semi-dormant state, the power output voltage of the power supply changes periodically, and the standby power consumption of the entire height-adjustable desk is less than 0.2W.

7. A height-adjustable desk, characterized in that, The height-adjustable desk includes a controller for executing an executable program to implement the control method for reducing the standby power consumption of the height-adjustable desk as described in any one of claims 1-5.

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