Motor control system and keyboard lifter

Abstract

The utility model relates to the technical field of motor control, in particular to a motor control system and a keyboard lifter. Comprising a control module, a power management module, a motor control module and a detection module, the detection module is arranged in the keyboard lifter, the control module is respectively connected with the detection module and the motor control module, the motor control module is connected with a motor, and the control module is provided with an Ethernet interface and a serial communication interface. The control module is used for connecting external equipment for remote control and data exchange; the detection module is arranged on the keyboard lifter, so that the operation state of the keyboard lifter is detected; the control module is respectively connected with the detection module and the motor control module, corresponding level signals can be sent to the motor control module according to detection signals, accurate control of the motor is achieved, the Ethernet interface and the serial communication interface are arranged in the main control module, various communication interfaces and protocols are supported, and the control module is convenient to use. The remote control of the keyboard lifter can be realized by connecting external equipment.

Description

Technical Field

[0001] This utility model relates to the field of motor control technology, and in particular to a motor control system and a keyboard lifter. Background Technology

[0002] A computer keyboard is a type of computer input device used to input characters, numbers, symbols, and other information into the computer system. It is an essential accessory for computers. Currently, computer keyboards are generally placed directly on the desktop for users to use, and remain on the desktop after use. They are basically exposed to the external environment, which easily causes dirt to accumulate on the keyboard surface, and debris can easily fall into the gaps between the keys. They are difficult to clean, and over time, this will cause the keyboard to wear out and become damaged. Manually storing them after each use is also time-consuming and laborious.

[0003] Therefore, designing a motor control system and keyboard lifter capable of moving the keyboard for storage is of great importance to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a motor control system and keyboard lifter that can drive the keyboard to move for storage, so as to solve the problem that the keyboard is easy to get dirty when placed on the desktop for a long time in the prior art.

[0005] This utility model discloses a motor control system for controlling the motor in a keyboard lift. The system includes: a control module, a power management module, a motor control module, and a detection module. The detection module is installed in the keyboard lift to detect the operating status. The input terminal of the control module is connected to the detection module to acquire a detection signal. The output terminal of the control module is connected to the input terminal of the motor control module to output a corresponding control level signal based on the detection signal. The output terminal of the motor control module is connected to the motor to control the motor's operation based on the control level signal. The control module is equipped with an Ethernet interface and a serial communication interface. The Ethernet interface is used to connect to external devices for remote control, and the serial communication interface is used to connect to external devices for data exchange.

[0006] Optionally, the detection module includes multiple sensors or limit switches disposed on the keyboard lifter.

[0007] Optionally, the control module includes a control chip, a reset circuit, and a timer. The reset circuit and the timer are both connected to the control chip, and the input and output pins of the control chip are respectively connected to the detection module and the motor control module.

[0008] Optionally, the Ethernet interface includes a PHY chip, which is connected to the control chip via an SPI interface, an RMII interface, or a MII interface.

[0009] Optionally, the control chip is provided with USART pins and UART pins for connecting to a serial communication interface to connect to external devices.

[0010] Optionally, the power control module includes an input circuit, a step-down circuit, and a multi-output circuit, wherein the output circuit is used to output 5V, 3.3V, and 12V voltages.

[0011] Optionally, the system may also include a button module, an indicator light module, and a buzzer module, all of which are connected to the control module.

[0012] Optionally, it also includes a display module, which is connected to the control module to input control signals and display the operating status.

[0013] Optionally, it may also include a wireless communication module, which is connected to the control module for wireless remote control.

[0014] To address the problems existing in the prior art, this utility model also provides a keyboard lifter, which includes a housing, a lifting frame, and a motor; the housing is provided with an entrance / exit for the keyboard to pass through, the lifting frame is connected to the keyboard, the motor is used to drive the lifting frame to move and move the keyboard, so as to store the keyboard in the housing through the entrance / exit or extend it out of the housing; a detection module is provided on the lifting frame to detect the operating status of the lifting frame.

[0015] Compared with the prior art, the beneficial effects of the motor control system provided by this utility model embodiment are as follows: by designing a motor control system and keyboard lifter that can drive the keyboard to move for storage, including a control module, a power management module, a motor control module and a detection module, the detection module is set in the keyboard lifter to realize the detection of the operating status of the keyboard lifter; the control module is connected to the detection module and the motor control module respectively, and can accurately control the motor according to the detection signal, and by setting an Ethernet interface and a serial communication interface in the main control module, it supports multiple communication interfaces and protocols, and can realize remote control of the keyboard lifter by connecting to external devices. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1This is the system block diagram of the motor control system provided in this embodiment of the utility model. Figure 1 ;

[0018] Figure 2 This is a circuit diagram of the power management module provided in an embodiment of the present invention;

[0019] Figure 3 This is a circuit diagram of the 5V output circuit provided in this embodiment of the utility model;

[0020] Figure 4 This is the circuit of the 3.3V output circuit provided in this embodiment of the utility model. Figure 1 ;

[0021] Figure 5 This is the circuit of the 3.3V output circuit provided in this embodiment of the utility model. Figure 2 ;

[0022] Figure 6 This is a circuit diagram of the control module provided in an embodiment of the present utility model;

[0023] Figure 7 This is the system block diagram of the motor control system provided in this embodiment of the utility model. Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the keyboard lifter provided in this embodiment of the utility model. Figure 1 ;

[0025] Figure 9 This is a schematic diagram of the keyboard lifter provided in this embodiment of the utility model. Figure 2 .

[0026] Figure label:

[0027] 100. Control module; 200. Power management module; 300. Motor control module; 400. Detection module; 500. Button module; 600. Indicator light module; 700. Buzzer module; Keyboard lifter 1000. Motor 2000; 110. Ethernet interface; 120. Serial communication interface; 210. Input circuit; 220. Step-down circuit; 240. Power control circuit; 231. First voltage output terminal; 232. Second voltage output terminal; 233. Third voltage output terminal; 234. Fourth voltage output terminal; 130. Control chip; 140. Reset circuit; 150. Timer; 310. First rising drive circuit; 320. First falling drive circuit; 330. Exit drive circuit; 340. Retraction drive circuit; 350. Second rising drive circuit; 360. Second falling drive circuit; 1. Housing; 3. Lifting frame; 4. Keyboard; 11. Entrance / exit.

[0028] CN, voltage input terminal; F, fuse; C1, filter capacitor; T1, transformer; U5, first voltage regulator; U1, second voltage regulator; U6, third voltage regulator. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] like Figures 1 to 7 As shown, this utility model provides a specific embodiment of a motor control system.

[0031] A motor control system for motor control in a keypad lifter, referenced. Figure 1 The motor control system includes a control module 100, a power management module 200, a motor control module 300, and a detection module 400. The detection module 400 is installed in the keyboard lift 1000. The input terminal of the control module 100 is connected to the detection module 400, the output terminal of the control module 100 is connected to the input terminal of the motor control module 300, and the output terminal of the motor control module 300 is connected to the motor 2000.

[0032] Among them, reference Figure 1 The control module 100 is equipped with an Ethernet interface 110 and a serial communication interface 120. The Ethernet interface 110 is used to connect to an external device 3000 for remote control, and the serial communication interface 120 is used to connect to an external device 3000 for data exchange.

[0033] In one embodiment, reference Figure 1 and Figure 2 The power management module 200 includes an input circuit 210, a step-down circuit 220, a multiple output circuit, and a power control circuit 240. The input circuit 210 includes a voltage input terminal CN, a fuse F, and a filter capacitor C1. The voltage input terminal CN is used to connect to an external power supply to obtain voltage. One end of the fuse F is connected to the voltage input terminal, and the other end of the fuse F is connected to the filter capacitor C1 to provide overcurrent protection. The filter capacitor C1 is used to eliminate power ripple and noise.

[0034] The step-down circuit 220 includes a transformer T1. The primary side of the transformer T1 is connected to the input circuit 210 to obtain a stable power supply voltage. The secondary side of the transformer T1 is connected to the output circuit for outputting the voltage. The transformer T1 is used to step down the input AC voltage to the required AC voltage. During the step-down process, the transformer T1 can provide electrical isolation, isolating the input circuit 210 from the output circuit to prevent ground short circuits and reduce the propagation of electrical noise, thereby improving the safety and stability of the power supply system. The transformer T1 can also play a filtering role in the power supply module, reducing high-frequency noise in the power supply through its inductive properties, and improving the stability and purity of the output voltage.

[0035] refer to Figures 2 to 5 The multi-output circuit specifically includes a 12V output circuit, a 5V output circuit, and a 3.3V output circuit. The 12V output circuit includes a first voltage output terminal 231, which is directly connected to the secondary side of transformer T1. The input voltage is isolated and stepped down to 12V by transformer T1 and then output through the first voltage output terminal 231. The 5V output circuit includes a first voltage regulator U5 and a second voltage output terminal 232. The input terminal of the first voltage regulator U5 is connected to the first voltage output terminal 231 to obtain a 12V voltage, and the output terminal of the first voltage regulator U5 is connected to the second voltage output terminal 232 to output a 5V voltage. The 3.3V output circuit includes a 5V input terminal, a second voltage regulator U1, and a second voltage regulator U2. The circuit includes a third voltage output terminal 233, or a 3.3V output circuit including a 12V input terminal, a third voltage regulator U6, and a fourth voltage output terminal 234. The 5V input terminal is connected to the second voltage output terminal 232 to obtain a 5V voltage. The 5V input terminal is also connected to the second voltage regulator U1 to input a 5V voltage. The second voltage regulator U1 steps down the 5V voltage to a 3.3V voltage and outputs it through the third voltage output terminal 233. The 12V input terminal is connected to the first voltage output terminal 231 to obtain a 12V voltage. The 12V input terminal is also connected to the third voltage regulator U6 to output a 12V voltage. The third voltage regulator U6 steps down the 12V voltage to a 3.3V voltage and outputs it through the fourth voltage output terminal 234.

[0036] Among them, the first regulator U5, the second regulator U1 and the third regulator U6 can all be switching regulators or LDOs to step down the input voltage to provide the required stable voltage.

[0037] In one embodiment, the detection module 400 includes multiple sensors or limit switches disposed on the keyboard lifter to obtain the operating status of the keyboard lifter. The operating status includes the current working state of the motor, such as off, on, lifting, or rotating, as well as features such as the current position of the keyboard on the keyboard lifter.

[0038] The sensor can be a photoelectric sensor. Photoelectric sensors not only have high detection accuracy and resolution, enabling them to accurately detect the position and other features of target objects, but also have a fast response speed, enabling them to detect changes in target objects in real time.

[0039] For keyboard orientation detection and motor status detection, limit switches can also be used. During the movement of the keyboard lift, the limit switch can not only detect the position and direction of movement of the object, but also trigger corresponding actions when the system moves to a specific position, such as changing the direction of movement or stopping the movement, to prevent the object from moving to a dangerous position or exceeding the working range.

[0040] In one embodiment, reference Figure 6 The control module 100 includes a control chip 130, a reset circuit 140, and a timer 150. The reset circuit 140 and the timer 150 are both connected to the control chip 130. The input and output pins (GPIO) of the control chip 130 are connected to the detection module 400 and the motor control module 300, respectively.

[0041] Specifically, refer to Figure 6 The reset circuit 140 can ensure that each component is in a known initial state during system startup, avoiding abnormal device startup due to power fluctuations or other problems. It can also monitor the system status when a system fault or abnormal situation occurs and restore the system to a safe state when the system fault is resolved, so as to avoid equipment damage or data loss. The timer 150 can be a watchdog timer, which is used to periodically reset during normal system operation to monitor system faults. When a system fault occurs, it can trigger a reset operation and restore the system to the initial state through the reset circuit 140.

[0042] The control chip 130 is equipped with multiple input / output interfaces. The control chip 130 is connected to the detection module 400 to acquire detection signals. The control chip 130 can output high or low levels to the motor control module 300 according to the detection signals, and control the motor through the motor control module 300. The control chip 130 also includes multiple communication pins to connect to the Ethernet interface 110 and the serial communication interface 120 respectively.

[0043] The Ethernet interface 110 can be connected to network devices, such as computers, via a network cable. It can be connected directly or through a router to remotely control the motor on the keyboard lift.

[0044] The Ethernet interface 110 includes a PHY chip, which is connected to the control chip 130 via an SPI interface, an RMII interface, or a MII interface. The PHY chip is responsible for processing the physical layer signal transmission and reception, converting digital signals into analog signals for transmission in the network, and converting received analog signals into digital signals and sending them to the control chip 130.

[0045] The SPI interface can simultaneously transmit and receive data between the external device 3000 and the control chip 130. The SPI interface includes a clock signal line for synchronizing data transmission between the control chip 130 and the external device 3000, as well as data lines for output of the control chip 130 and input of the external device 3000, and data lines for input of the control chip 130 and output of the external device 3000. It also includes a device selection signal line for selecting the control chip 130 and a specific external device 3000. The SPI interface supports the configuration of clock polarity and clock phase.

[0046] The RMII interface is used to connect the MAC layer and PHY chip in the control chip 130. It has a small number of pins and can be used when there are not enough pins. The RMII interface can operate in two different modes: RMII 1.0 and RMII 2.0. The RMII 1.0 mode uses a 50MHz clock frequency and transmits one bit per clock cycle; while the RMII 2.0 mode uses a 25MHz clock frequency and transmits two bits per clock cycle, thus improving the data transmission rate at the same clock frequency.

[0047] The MII interface can also be used to connect the MAC layer and PHY chip in the control chip 130. The MII interface usually consists of 20 pins, including data lines, control lines and clock lines, used to transmit data and control signals. The MII interface requires a clock signal to operate. Data and control signals are transmitted through a set of parallel lines. The MII interface generally uses full-duplex communication, allowing data to be sent and received simultaneously.

[0048] In one embodiment, reference Figure 6 The control chip 130 is also equipped with a USART pin and a UART pin for connecting to the serial communication interface 120. The serial communication interface 120 uses a UART interface to convert parallel data into serial data for transmission. The UART interface can connect to an external device 3000 through a transmit line (TX) and a receive line (RX) to achieve serial communication.

[0049] In one embodiment, reference Figure 7The motor control module 300 includes multiple drive circuits to control the motor to produce different movements. Specifically, it includes a first rising drive circuit 310, a first falling drive circuit 320, an outward tilting drive circuit 330, a retracting drive circuit 340, a second rising drive circuit 350, and a second falling drive circuit 360. The first rising drive circuit 310 and the second rising drive circuit 350 are both used to control the motor to drive the keyboard lifter to rise. The first falling drive circuit 320 and the second falling drive circuit 360 are both used to control the motor to drive the keyboard lifter to fall. The outward tilting drive circuit 330 is used to control the motor to drive the keyboard lifter to roll outward. The retracting drive circuit 340 is used to control the motor to drive the keyboard lifter to roll inward.

[0050] In one embodiment, reference Figure 7 The motor control system also includes a button module 500, an indicator light module 600, and a buzzer module 700, all of which are connected to the control module 100.

[0051] Specifically, refer to Figure 7 The button module 500 includes a first button 510 and a second button 520. Both the first button 510 and the second button 520 are connected to the input / output pins GPIO of the control chip 130. Both the first button 510 and the second button 520 are equipped with pull-up or pull-down resistors to prevent floating. The input terminals of the indicator light module 600 and the buzzer module 700 are both connected to the control chip 130. The indicator light module 600 is used to display the status through LEDs, and the buzzer module 700 is used to sound an alarm when the system is malfunctioning.

[0052] In one embodiment, reference Figure 7 It also includes a display module 800 and a wireless communication module 900. The display module 800 is connected to the control module 100 to display status via the display screen; the wireless communication module 900 is connected to the control module 100 for wireless remote control.

[0053] like Figure 8 and Figure 9 As shown, this utility model provides a specific embodiment of a keyboard lifter.

[0054] A keyboard lifter, reference Figure 8 and Figure 9The keyboard lifter includes a housing 1, a lifting frame 2, and a motor 2000. The housing 1 is provided with an entrance / exit 11 for the keyboard to pass through. The lifting frame 2 is connected to the keyboard 4. The motor 2000 is used to drive the lifting frame 2 to move and move the keyboard 4 so that the keyboard 4 can be stored in the housing 1 through the entrance / exit 11 or extend out of the housing 1. A detection module 400 is provided on the lifting frame 2 to detect the operating status of the lifting frame 2.

[0055] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A motor control system for controlling the motor in a keyboard lifter, characterized in that, include: The system includes a control module, a power management module, a motor control module, and a detection module. The detection module is located in the keyboard lifter and is used to detect the operating status. The input terminal of the control module is connected to the detection module to obtain the detection signal; The output terminal of the control module is connected to the input terminal of the motor control module to output a corresponding control level signal based on the detection signal. The output of the motor control module is connected to the motor to control the operation of the motor according to the control level signal; the control module is provided with an Ethernet interface and a serial communication interface, the Ethernet interface is used to connect to external devices for remote control, and the serial communication interface is used to connect to external devices for data exchange.

2. The motor control system according to claim 1, characterized in that, The detection module includes multiple sensors or limit switches mounted on the keyboard lifter.

3. The motor control system according to claim 1, characterized in that, The control module includes a control chip, a reset circuit, and a timer. The reset circuit and the timer are both connected to the control chip. The input and output pins of the control chip are respectively connected to the detection module and the motor control module.

4. The motor control system according to claim 3, characterized in that, The Ethernet interface includes a PHY chip, which is connected to the control chip via an SPI interface, an RMII interface, or a MII interface.

5. The motor control system according to claim 3, characterized in that, The control chip is equipped with USART and UART pins for connecting to a serial communication interface to connect to external devices.

6. The motor control system according to claim 1, characterized in that, The power control module includes an input circuit, a step-down circuit, and a multi-output circuit. The output circuit is used to output 5V, 3.3V, and 12V voltages.

7. The motor control system according to claim 1, characterized in that, It also includes a button module, an indicator light module, and a buzzer module, all of which are connected to the control module.

8. The motor control system according to claim 1, characterized in that, It also includes a display module, which is connected to the control module to input control signals and display the operating status.

9. The motor control system according to claim 1, characterized in that, It also includes a wireless communication module, which is connected to the control module for wireless remote control.

10. A keyboard lifter, characterized in that, The device includes a housing, a lifting frame, and a motor. The housing has an entrance / exit for the keyboard to pass through. The lifting frame is connected to the keyboard. The motor drives the lifting frame to move and move the keyboard so that the keyboard can be stored in the housing through the entrance / exit or extend out of the housing. A detection module is installed on the lifting frame to detect the operating status of the lifting frame.

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