Controller and control method of lifting table

Abstract

The invention belongs to the technical field of lifting tables, and discloses a controller and a control method of a lifting table, and the controller comprises a power supply module, a voltage conversion module, a key module, a microprocessor module and a serial port communication module; the power supply module is used for providing a first voltage signal for the lifting table controller and outputting the first voltage signal to the voltage conversion module; the voltage conversion module converts the first voltage signal into a second voltage signal and outputs the second voltage signal to the microprocessor module; the key module is used for adjusting the height of the lifting table and sending a height adjusting instruction of the lifting table to the microprocessor module; the microprocessor module outputs the received height adjusting instruction of the lifting table to the serial port communication module; the serial port communication module synchronously outputs the height adjusting instruction of the lifting table to a driving motor of the lifting table, and the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjusting instruction of the lifting table. The controller of the lifting table provided by the invention can accurately control the lifting table.

Description

Technical Field

[0001] The present invention belongs to the technical field of lift tables, and in particular relates to a controller and a control method of a lift table. Background Art

[0002] A height-adjustable table is a table designed to accommodate users of different heights or to meet the needs of users switching between sitting and standing positions. It adjusts the height of the tabletop through mechanisms such as electric motors, gas pressure rods or mechanical knobs. Height-adjustable tables are widely used in offices, home study rooms, schools and other places to promote a healthy working and learning environment and reduce health problems caused by long periods of sitting, such as cervical spondylosis and back pain. However, during the lifting process of existing height-adjustable tables, the rising or falling parameters of the motor of the height-adjustable table and the controller signal of the height-adjustable table are not synchronized, resulting in the inability of the controller of the height-adjustable table to accurately control the height-adjustable table.

[0003] Therefore, how to enable the controller of the lifting table to accurately control the lifting table is a problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the technical problem that the motor rising or falling parameters of the lifting table and the controller signal of the lifting table are not synchronized, the present invention provides a controller and a control method of the lifting table.

[0005] In a first aspect, the present invention provides a controller for a lifting table, including a power supply module, a voltage conversion module, a key module, a microprocessor module, and a serial communication module;

[0006] The power supply module is connected to the voltage conversion module, and the power supply module is used to provide a first voltage signal to the lifting table controller and output the first voltage signal to the voltage conversion module;

[0007] The voltage conversion module is connected to the microprocessor module, and the voltage conversion module is used to convert the first voltage signal into a second voltage signal, and output the second voltage signal to the microprocessor module;

[0008] The button module is connected to the microprocessor module, and the button module is used to adjust the height of the lifting table and send a height adjustment instruction of the lifting table to the microprocessor module;

[0009] The microprocessor module is connected to the serial communication module, and the microprocessor module outputs the received height adjustment instruction of the lifting table to the serial communication module;

[0010] The serial communication module synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table.

[0011] Preferably, the power supply module includes a first voltage source, the voltage conversion module includes a sampling resistor, a first input pin and a first output pin, and the microprocessor module includes a second voltage source;

[0012] One end of the sampling resistor is connected to the first voltage source, the other end of the sampling resistor is connected to the first input pin, and the first output pin is connected to the second voltage source.

[0013] Preferably, the controller of the lifting table further comprises a controller interface module, and the controller interface module is connected to the serial communication module;

[0014] The serial communication module includes a first serial communication unit and a second serial communication unit, the microprocessor includes a first serial communication pin and a second serial communication pin, and the controller interface module includes a third serial communication pin and a fourth serial communication pin;

[0015] The first serial port communication unit is connected to the first serial port communication pin and the third serial port communication pin respectively, and the second serial port communication unit is connected to the second serial port communication pin and the fourth serial port communication pin respectively.

[0016] Preferably, the controller of the lifting table further includes a debugging module, the debugging module is connected to the microprocessor module, and the debugging module is used to debug the burning information of each module in the controller of the lifting table.

[0017] Preferably, the debugging module includes a debugging unit and a digital input-output unit, the microprocessor module includes a debugging pin and a digital input-output pin, the debugging unit is connected to the debugging pin, and the digital input-output unit is connected to the digital input-output pin.

[0018] Preferably, the controller of the lifting table also includes a display module, which is connected to the microprocessor module and the debugging module respectively, and is used to display the lifting information of the lifting table and the burning information of each module in the controller of the lifting table.

[0019] Preferably, the display module includes a first LED digital tube unit and a second LED digital tube unit, and the microprocessor module includes a first LED digital tube pin and a second LED digital tube pin;

[0020] The first LED digital tube unit is connected to the first LED digital tube pin, and the second LED digital tube unit is connected to the second LED digital tube pin and the debugging unit respectively.

[0021] In a second aspect, the present invention further provides a control method for a lift table, comprising:

[0022] The power supply module provides a first voltage signal to the lifting table, and outputs the first voltage signal to the voltage conversion module;

[0023] The voltage conversion module converts the first voltage signal into a second voltage signal, and outputs the second voltage signal to the microprocessor module;

[0024] Acquire the height adjustment instruction of the lifting table sent by the key module to the microprocessor module, and output the height adjustment instruction of the lifting table to the serial communication module;

[0025] The serial communication module synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table.

[0026] Preferably, the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table, including:

[0027] The maximum height and the minimum height that the lifting table can adjust are preset as a first preset height and a second preset height;

[0028] The adjustment height output by the height adjustment instruction of the lifting table is compared with the first preset height and the second preset height, and the lifting of the lifting table is controlled according to the comparison result.

[0029] Preferably, comparing the adjustment height output by the height adjustment instruction of the lifting table with the first preset height and the second preset height, and controlling the lifting of the lifting table according to the comparison result, comprises:

[0030] If the adjustment height sent by the height adjustment instruction of the lifting table is less than the first preset height and greater than the second preset height, the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table;

[0031] If the adjustment height sent by the height adjustment instruction of the lifting table is greater than or equal to the first preset height or less than or equal to the second preset height, the driving motor of the lifting table stops working.

[0032] Compared with the prior art, the controller and control method of a lifting table provided by the present invention outputs the received height adjustment instruction of the lifting table to the serial communication module through the microprocessor module; the serial communication module synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table. By adding a serial communication module in the controller of the lifting table, the present invention can synchronize the rising or falling parameters of the motor of the lifting table with the controller signal of the lifting table, so that the controller of the lifting table can accurately control the lifting table. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present invention, rather than all of the embodiments. For ordinary technicians in this field, without paying creative work, other drawings obtained based on these drawings all fall within the scope of protection of the present invention.

[0034] Figure 1 A schematic diagram of the framework structure of a controller for a lifting table provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a circuit structure of a voltage conversion module provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the circuit structure of a microprocessor control module provided by an embodiment of the present invention;

[0037] Figure 4 A key arrangement diagram of a key module provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the circuit structure of a key module provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the circuit structure of a serial communication module provided in an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of the circuit structure of a controller interface module provided by an embodiment of the present invention;

[0041] Figure 8 A schematic diagram of a circuit structure of a debugging module provided by an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of a circuit structure of a display module provided by an embodiment of the present invention;

[0043] Fig.10 A schematic flow chart of a control method for a lift table provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] In order to make the description of the content of the present invention more detailed and complete, the following is an illustrative description of the implementation method and specific examples of the present invention; however, this is not the only form of implementing or applying the specific embodiments of the present invention. The implementation method covers the features of multiple specific embodiments and the method steps and their sequence for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and step sequences. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0047] In the description of the embodiments of the present invention, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present invention, “multiple” means two or more than two, and other quantifiers are similar. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention, and the embodiments of the present invention and the features in the embodiments may be combined with each other without conflict.

[0048] In order to solve the technical problem that the lifting table motor rising or falling parameters and the lifting table controller signal are not synchronized, the present invention provides a lifting table controller, please refer to Figure 1 , Figure 1The schematic diagram of the framework structure of a controller of a lifting table provided in an embodiment of the present invention is a schematic diagram of the framework structure of a controller of a lifting table, wherein the controller of the lifting table comprises a power supply module 10, a voltage conversion module 20, a key module 30, a microprocessor module 40 and a serial communication module 50; the power supply module 10 is connected to the voltage conversion module 20, and the power supply module 10 is used to provide a first voltage signal to the lifting table controller, and output the first voltage signal to the voltage conversion module 20; the voltage conversion module 20 is connected to the microprocessor module 40, and the voltage conversion module 20 is used to convert the first voltage signal into a second voltage signal, and output the second voltage signal to the voltage conversion module 20; The signal is output to the microprocessor module 40; the button module 30 is connected to the microprocessor module 40, the button module 30 is used to adjust the height of the lifting table, and sends the height adjustment instruction of the lifting table to the microprocessor module 40; the microprocessor module 40 is connected to the serial communication module 50, the microprocessor module 40 outputs the received height adjustment instruction of the lifting table to the serial communication module 50; the serial communication module 50 synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table. The present invention can make the lifting table motor rise or fall parameters and the lifting table controller signal synchronously transmitted by adding a serial communication module 50 in the controller of the lifting table, so that the controller of the lifting table can accurately control the lifting table.

[0049] As an implementation, please refer to Figure 2-3 , Figure 2 A schematic diagram of a circuit structure of a voltage conversion module provided by an embodiment of the present invention, Figure 3 A circuit structure diagram of a microprocessor control module provided in an embodiment of the present invention, the power supply module 10 includes a first voltage source, the voltage conversion module 20 includes sampling resistors R6 and R7, a first input pin VI N and a first output pin VOUT, and the microprocessor module 40 includes a second voltage source VDD_5V; one end of the sampling resistor is connected to the first voltage source, the other end of the sampling resistor is connected to the first input pin VI N, and the first output pin VOUT is connected to the second voltage source VDD_5V. Specifically, in an embodiment of the present invention, the first voltage source is a 12V voltage signal, the second voltage source is a 5V voltage signal, and the voltage conversion module 20 needs to convert the 12V voltage signal into a 5V voltage signal to power the microprocessor module 40. In addition, the voltage conversion module 20 also includes capacitors C3 and C4, and capacitors C3 and C4 are used to filter out interference signals generated in the voltage conversion module 20.

[0050] As an implementation, please refer to Figure 4-5 , Figure 4 A key arrangement diagram of a key module provided in an embodiment of the present invention, Figure 5 The schematic diagram of the circuit structure of a key module provided in an embodiment of the present invention is as follows: the key module 30 includes a key switch unit, the microprocessor module 40 includes a key switch pin, and the key switch unit is connected to the key switch pin. Specifically, in an embodiment of the present invention, Figure 4 In the figure, button 1 indicates rising to the starting height, button 2 and button 3 indicate rising to the preset height, button 4 indicates the confirmation reset member, button 5 indicates the rising button, and button 6 indicates the descending button. The rising starting height and the preset height are set according to actual needs, and the embodiment of the present invention does not impose any further restrictions. In addition, Figure 5 The 6 key switch circuits in the key module 30 correspond to Figure 4 Each key switch unit in the key module 30 includes a key switch and a filter capacitor. The key switch is used to control the lifting table, and the filter capacitor is used to filter out interference signals in the key module 30. It should be noted that the controller of the lifting table only has display and key functions, and other software programming is in the driver controller.

[0051] As an implementation, please refer to Figure 6-7 , Figure 6 A schematic diagram of a circuit structure of a serial communication module provided by an embodiment of the present invention, Figure 7 A circuit structure diagram of a controller interface module provided in an embodiment of the present invention, wherein the controller of the lifting table further comprises a controller interface module 60, wherein the controller interface module 60 is connected to the serial communication module 50; the serial communication module 50 comprises a first serial communication unit and a second serial communication unit, the microprocessor comprises a first serial communication pin RXD and a second serial communication pin TXD, and the controller interface module 60 comprises a third serial communication pin TXD1 and a fourth serial communication pin RXD1; the first serial communication unit is respectively connected to the first serial communication pin RXD and the third serial communication pin TXD1, and the second serial communication unit is respectively connected to the second serial communication pin TXD and the fourth serial communication pin RXD1. Specifically, in an embodiment of the present invention, the first serial communication unit and the second serial communication unit synchronously output the received height adjustment instruction of the lifting table to the controller interface module 60, and the controller interface module 60 is connected to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table.

[0052] As an implementation, please refer to Figure 8 , Figure 8A schematic diagram of the circuit structure of a debugging module provided in an embodiment of the present invention, wherein the controller of the lifting table further comprises a debugging module 70, wherein the debugging module 70 is connected to the microprocessor module 40, and the debugging module 70 is used to debug the burning information of each module in the controller of the lifting table. In an embodiment of the present invention, the debugging module 70 is provided in the controller of the lifting table, and the burning information of each module in the controller can be debugged to identify, analyze and eliminate errors in the controller software.

[0053] As an implementation mode, the debugging module 70 includes a debugging unit and a digital input-output unit, the microprocessor module 40 includes a debugging pin CLCK1 and a digital input-output pin DIO1, the debugging unit is connected to the debugging pin CLCK1, and the digital input-output unit is connected to the digital input-output pin DIO1.

[0054] As an implementation mode, the controller of the lifting table further includes a display module 80, and the display module 80 is connected to the microprocessor module 40 and the debugging module 70 respectively, and the display module 80 is used to display the lifting information of the lifting table and the burning information of each module in the controller of the lifting table. Specifically, in the embodiment of the present invention, the controller of the lifting table is further provided with a display module 80 to display the lifting information and debugging information of the lifting table.

[0055] As an implementation, please refer to Fig. 9 , Fig. 9 A circuit structure diagram of a display module provided in an embodiment of the present invention, wherein the display module 80 includes a first LED digital tube unit and a second LED digital tube unit, and the microprocessor module 40 includes a first LED digital tube pin and a second LED digital tube pin; the first LED digital tube unit is connected to the first LED digital tube pin, and the second LED digital tube unit is respectively connected to the second LED digital tube pin and the debugging unit. Specifically, in an embodiment of the present invention, the LED digital tube is used to display key information, wherein LED1-LED5 is the first LED digital tube unit, and LED6 is the second digital tube unit. In addition, the display module can also adjust the brightness of the digital tube, and the digital tube can adjust the brightness of the display screen in the controller to low brightness, normal brightness, and high brightness.

[0056] Based on the controller of the lifting table, the present invention also provides a control method of the lifting table, which can be executed by software and / or hardware devices. Fig.10 , Fig.10A flow chart of a control method for a lifting table provided in an embodiment of the present invention, the control method for the lifting table includes: S101, obtaining a first voltage signal provided by a power supply module to the lifting table, and outputting the first voltage signal to a voltage conversion module; S102, the voltage conversion module converts the first voltage signal into a second voltage signal, and outputs the second voltage signal to a microprocessor module; S103, obtaining a height adjustment instruction of the lifting table sent by a key module to the microprocessor module, and outputting the height adjustment instruction of the lifting table to a serial communication module; S104, the serial communication module synchronously outputs the received height adjustment instruction of the lifting table to a driving motor of the lifting table, and the driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table. The control method for the lifting table provided in an embodiment of the present invention, by adding a serial communication module in the controller of the lifting table, can make the lifting table motor rise or fall parameters and the lifting table controller signal synchronously transmitted, so that the lifting table controller can accurately control the lifting table.

[0057] Preferably, the driving motor of the lifting table controls the lifting of the lifting table according to the height adjustment instruction of the lifting table received, including: presetting the maximum adjustable height and minimum adjustable height of the lifting table to a first preset height and a second preset height; comparing the adjustment height output by the height adjustment instruction of the lifting table with the first preset height and the second preset height, and controlling the lifting of the lifting table according to the comparison result. Specifically, in an embodiment of the present invention, the maximum adjustable height of the lifting table can be preset to 112mm and the minimum height to 72mm. In addition, because the driving motor of the lifting table may have accumulated errors after working for a long time, when the height of the lifting table reaches the lower limit of 72mm or the upper limit of 112mm, the speed of the driving motor needs to drop to about 1000 rpm to prevent the speed of the driving motor from being too fast and the mechanical hardware from being damaged by strong impact.

[0058] Preferably, the adjusting height output by the height adjustment instruction of the lifting table is compared with the first preset height and the second preset height, and the lifting and lowering of the lifting table is controlled according to the comparison result, including: if the adjusting height sent by the height adjustment instruction of the lifting table is less than the first preset height and greater than the second preset height, the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table; if the adjusting height sent by the height adjustment instruction of the lifting table is greater than or equal to the first preset height or less than or equal to the second preset height, the driving motor of the lifting table stops working. Specifically, in an embodiment of the present invention, if the adjusting height output by the height adjustment instruction of the lifting table is within the range of 72-112mm, the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table, otherwise, the controller controls the driving motor of the lifting table to stop working.

[0059] The control method of the lifting table provided in the embodiment of the present invention can execute the technical solution of the controller of the lifting table in any of the above-mentioned embodiments. Its implementation principle and beneficial effects are similar to the implementation principle and beneficial effects of the controller of the lifting table. Please refer to the implementation principle and beneficial effects of the controller of the lifting table, which will not be repeated here.

[0060] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0061] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units. The above is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

[0062] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above in the form of preferred embodiments, it is not intended to limit the present invention. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A controller for a lifting table, characterized in that: It includes a power supply module, a voltage conversion module, a key module, a microprocessor module and a serial communication module; The power supply module is connected to the voltage conversion module, and the power supply module is used to provide a first voltage signal to the lifting table controller and output the first voltage signal to the voltage conversion module; The voltage conversion module is connected to the microprocessor module, and the voltage conversion module is used to convert the first voltage signal into a second voltage signal, and output the second voltage signal to the microprocessor module; The button module is connected to the microprocessor module, and the button module is used to adjust the height of the lifting table and send a height adjustment instruction of the lifting table to the microprocessor module; The microprocessor module is connected to the serial communication module, and the microprocessor module outputs the received height adjustment instruction of the lifting table to the serial communication module; The serial communication module synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table.

2. The controller of the lifting table according to claim 1, characterized in that: The power supply module includes a first voltage source, the voltage conversion module includes a sampling resistor, a first input pin and a first output pin, and the microprocessor module includes a second voltage source; One end of the sampling resistor is connected to the first voltage source, the other end of the sampling resistor is connected to the first input pin, and the first output pin is connected to the second voltage source.

3. The controller of the lifting table according to claim 2, characterized in that: The controller of the lifting table further comprises a controller interface module, and the controller interface module is connected to the serial communication module; The serial communication module includes a first serial communication unit and a second serial communication unit, the microprocessor includes a first serial communication pin and a second serial communication pin, and the controller interface module includes a third serial communication pin and a fourth serial communication pin; The first serial port communication unit is connected to the first serial port communication pin and the third serial port communication pin respectively, and the second serial port communication unit is connected to the second serial port communication pin and the fourth serial port communication pin respectively.

4. The controller of the lifting table according to claim 3, characterized in that: The controller of the lifting table also includes a debugging module, which is connected to the microprocessor module and is used to debug the burning information of each module in the controller of the lifting table.

5. The controller of the lifting table according to claim 4, characterized in that: The debugging module includes a debugging unit and a digital input-output unit, the microprocessor module includes a debugging pin and a digital input-output pin, the debugging unit is connected to the debugging pin, and the digital input-output unit is connected to the digital input-output pin.

6. The controller of the lifting table according to claim 5, characterized in that: The controller of the lifting table also includes a display module, which is connected to the microprocessor module and the debugging module respectively, and is used to display the lifting information of the lifting table and the burning information of each module in the controller of the lifting table.

7. The controller of the lifting table according to claim 6, characterized in that: The display module includes a first LED digital tube unit and a second LED digital tube unit, and the microprocessor module includes a first LED digital tube pin and a second LED digital tube pin; The first LED digital tube unit is connected to the first LED digital tube pin, and the second LED digital tube unit is connected to the second LED digital tube pin and the debugging unit respectively.

8. A control method for a lifting table, characterized in that: include: The power supply module provides a first voltage signal to the lifting table, and outputs the first voltage signal to the voltage conversion module; The voltage conversion module converts the first voltage signal into a second voltage signal, and outputs the second voltage signal to the microprocessor module; Acquire the height adjustment instruction of the lifting table sent by the key module to the microprocessor module, and output the height adjustment instruction of the lifting table to the serial communication module; The serial communication module synchronously outputs the received height adjustment instruction of the lifting table to the driving motor of the lifting table, and the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table.

9. The control method of the lifting table according to claim 8, characterized in that: The driving motor of the lifting table controls the lifting of the lifting table according to the received height adjustment instruction of the lifting table, including: The maximum height and the minimum height that the lifting table can adjust are preset as a first preset height and a second preset height; The adjustment height output by the height adjustment instruction of the lifting table is compared with the first preset height and the second preset height, and the lifting of the lifting table is controlled according to the comparison result.

10. The control method of the lifting table according to claim 9, characterized in that: The method of comparing the adjustment height output by the height adjustment instruction of the lifting table with the first preset height and the second preset height, and controlling the lifting of the lifting table according to the comparison result, comprises: If the adjustment height sent by the height adjustment instruction of the lifting table is less than the first preset height and greater than the second preset height, the driving motor of the lifting table controls the lifting and lowering of the lifting table according to the received height adjustment instruction of the lifting table; If the adjustment height sent by the height adjustment instruction of the lifting table is greater than or equal to the first preset height or less than or equal to the second preset height, the driving motor of the lifting table stops working.

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