Host remote control expansion device

Abstract

The utility model provides a host remote control expansion device, which comprises a CPU (central processing unit) control module, an input-to-serial port module and a power module, the power module is respectively connected with the CPU control module and the input-to-serial port module, and the CPU control module is connected with the input-to-serial port module; the CPU control module comprises a connecting unit and a wireless communication unit, and the connecting unit is connected with the wireless communication unit; and the input-to-serial port module comprises a serial port communication control chip and a USB interface, and the serial port communication control chip is connected with the USB interface, so that the cost of the host remote control extension equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to remote control equipment technical field especially relates to a host computer remote control extension device. BACKGROUND

[0002] Under the background of the rapid development of modern information technology, remote control technology gradually becomes an important demand of various industries. The existing remote control system depends on software, has network connection, has the problems of delay, poor stability and high cost. In order to improve the efficiency and reliability of remote control, it is particularly important to develop a host computer remote control extension device. UTILITY MODEL CONTENT

[0003] The main purpose of the embodiment of the utility model is to provide a host computer remote control extension device, which improves the host computer remote control extension speed and reduces the cost of host computer remote control extension equipment.

[0004] One aspect of the utility model provides a host computer remote control extension device, which comprises:

[0005] A CPU control module, an input-to-serial port module and a power module, the power module is connected with the CPU control module and the input-to-serial port module respectively, and the CPU control module is connected with the input-to-serial port module;

[0006] The CPU control module comprises a connection unit and a wireless communication unit, and the connection unit is connected with the wireless communication unit;

[0007] The input-to-serial port module comprises a serial communication control chip and a USB interface, and the serial communication control chip is connected with the USB interface.

[0008] According to the host computer remote control extension device, the wireless communication unit adopts a wireless unit combined by Bluetooth and Wi-Fi, and the wireless communication unit is ESP32-C3-WROOM-2U.

[0009] According to the host computer remote control extension device, the connection unit comprises input / output pins, a sending pin and a reset pin, a resistor is arranged between the connection between the input / output pins and the corresponding pins of the wireless communication unit; a resistor is arranged between the connection between the reset pin and the power pin and the enable pin of the wireless communication unit, and the resistor is connected with two capacitors in parallel, wherein the power pin and the enable pin are connected in parallel through the resistor.

[0010] According to the host computer remote control extension device, the serial communication control chip adopts a USB keyboard and mouse-to-serial communication control chip, and the serial communication control chip is CH9350L.

[0011] According to the host remote control expansion device, the USB interface is connected with the serial communication control chip through two D+ pins and two D- pins and connected with the power module through two V33.

[0012] According to the host remote control expansion device, the serial communication control chip is connected with the wireless communication unit through a vin5 pin, a sel pin, a VDD33 pin and a plurality of led pins, wherein the VDD33 pin, the sel pin, the VDD33 pin and the plurality of led pins are connected with the wireless communication unit through an NPN transistor in parallel; a resistor and a light emitting diode are arranged between the connection of the plurality of led pins in parallel and the NPN transistor; a resistor and a light emitting diode are arranged between the connection of the vin5 pin, the sel pin and the VDD33 pin in parallel and the NPN transistor.

[0013] The embodiment of the utility model has at least the following beneficial effects: the input of the input conversion serial port module simulates the input of the mouse and the keyboard, and the wireless communication unit can start, shut down and restart the host equipment, thereby reducing the cost of the host remote control expansion device.

[0014] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0016] Figure 1 It is the connection block diagram of the host remote control expansion device of the utility model embodiment.

[0017] Figure 2 It is the circuit diagram of the power module of the utility model embodiment.

[0018] Figure 3 It is the circuit diagram of the CPU control module of the utility model embodiment.

[0019] Figure 4 It is the circuit diagram of the input conversion serial port module of the utility model embodiment.

[0020] Figure 5 It is the circuit diagram of the host remote control expansion device of the utility model embodiment. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. In the following description, the suffixes "module", "part" or "unit" used for an element are merely intended for facilitating explanation of the present application, and by themselves do not have any special meaning or function. Therefore, "module", "part" or "unit" can be used interchangeably. "First", "second", etc. are used only to distinguish technical features being described, and cannot be understood as indicating or implying relative importance or implying the number of technical features being indicated or the order of technical features being indicated. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as limiting the present application.

[0022] Reference Figure 1 , Figure 1 is a connection block diagram of the host remote control expansion device of the embodiment of the present application. It comprises a CPU control module, an input-to-serial port module and a power module, the power module is connected with the CPU control module and the input-to-serial port module respectively, and the CPU control module is connected with the input-to-serial port module; the CPU control module comprises a connection unit and a wireless communication unit, and the connection unit is connected with the wireless communication unit; the input-to-serial port module comprises a serial communication control chip and a USB interface, and the serial communication control chip is connected with the USB interface.

[0023] Reference Figure 2 , Figure 2 is a circuit diagram of the power module of the embodiment of the present application. It is 12V to 3.3V, and its pins comprise: VIN, input voltage pin, connected with a power supply; VOUT, output voltage pin, connected with a load; GND, ground pin; COMP, compensation pin, used for stabilizing a control loop; SW, switch pin, connected with an external inductor; FBk, feedback pin, used for feeding back an output voltage.

[0024] In some embodiments, reference Figure 3 is made to the circuit diagram of the CPU control module, which comprises a wireless communication unit adopting a wireless unit combined by Bluetooth and Wi-Fi and a connection unit, the wireless communication unit is ESP32-C3-WROOM-2U, the connection unit comprises input / output pins, a sending pin and a reset pin, resistors are arranged between the input / output pins connected through corresponding pins of the wireless communication unit; a resistor is arranged between the reset pin and the connection between the power pin and the enable pin of the wireless communication unit, and the resistor is connected in parallel with two capacitors connected in parallel, wherein the power pin and the enable pin are connected in parallel through the resistor, and the connection unit adopts a 4X2 specification.

[0025] Figure 4The utility model discloses an input conversion serial port module's circuit diagram, and it includes serial port communication control chip and USB interface, and serial port communication control chip adopts USB keyboard mouse conversion serial port communication control chip, and serial port communication control chip is CH9350L, and USB interface is connected with serial port communication control chip through two D+ pin and 2 D pin, and is connected with power module through two V33, and serial port communication control chip is connected with wireless communication unit through vin5 pin, sel pin, VDD33 pin and led pin, and wherein VDD33 pin, sel pin, VDD33 pin and a plurality of led pins are connected with wireless communication unit through NPN transistor after parallel connection, and a plurality of led pins are provided with resistance and light emitting diode between the connection of NPN transistor after parallel connection, and vin5 pin, sel pin and VDD33 pin are provided with resistance and light emitting diode between the connection of NPN transistor after parallel connection.

[0026] Reference Figure 5 , in combination Figure 3 and Figure 4 , boot download mode, pin io2=1, io8=1, io9=0, SPI mode, pin io2=1, io8=X, io9=1, io9 internal pull-up.

[0027] The above only is the preferred embodiment of the utility model, and the utility model is not limited to the above-mentioned implementation, as long as it reaches the technical effect of the utility model with the same means, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model. The technical scheme and / or implementation of the utility model can have various different modifications and changes within the protection scope of the utility model.

Claims

1. A host remote control extension device, characterized by, Include: CPU control module, input to serial port module and power module, the power module is connected with the CPU control module and input to serial port module respectively, the CPU control module is connected with the input to serial port module; The CPU control module includes a connection unit and a wireless communication unit, and the connection unit is connected with the wireless communication unit; The input to serial port module includes a serial communication control chip and a USB interface, and the serial communication control chip is connected with the USB interface.

2. The host remote control extension device of claim 1, wherein, The wireless communication unit adopts the wireless unit combined by Bluetooth and Wi-Fi, and the wireless communication unit is ESP32-C3-WROOM-2U.

3. The host remote control extension device of claim 2, wherein, The connection unit includes input / output pins, sending pins and reset pins, resistors are arranged between the connection of the input / output pins and the corresponding pins of the wireless communication unit; A resistor is arranged between the connection of the reset pin and the power pin and the enable pin of the wireless communication unit, and two connected capacitors are connected in parallel with the resistor, wherein the power pin and the enable pin are connected in parallel through the resistor.

4. The host remote control extension device of claim 2, wherein, The serial communication control chip adopts a USB keyboard and mouse to serial communication control chip, and the serial communication control chip is CH9350L.

5. The host remote control extension device of claim 4, wherein, The USB interface is connected with the serial communication control chip through two D+ pins and two D- pins, and is connected with the power module through two V33.

6. The host remote control extension device of claim 4, wherein, The serial communication control chip is connected with the wireless communication unit through vin5 pin, sel pin, VDD33 pin and led pin, wherein VDD33 pin, sel pin, VDD33 pin and multiple led pins are connected in parallel and connected with the wireless communication unit through NPN transistor; Multiple led pins are connected in parallel and a resistor and a light emitting diode are arranged between the connection of the multiple led pins and the NPN transistor; Vin5 pin, sel pin and VDD33 pin are connected in parallel and a resistor and a light emitting diode are arranged between the connection of the NPN transistor and the vin5 pin, sel pin and VDD33 pin.

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