TW202147117A - Control apparatus for computer peripheral device and control method thereof establish a communication mode between the selected computer peripheral device and the programmable logic controller to restrain the crosstalk between transmission wires - Google Patents

Abstract

A control apparatus for computer peripheral device is used for controlling communication between a motherboard and a plurality of computer peripheral devices. The control device comprises a programmable logic controller, a plurality of power lines, and a plurality of electric connection ports, wherein one of the electric connection ports is electrically connected to one of the computer peripheral devices via a plurality of transmission wires. The transmission wires are adjacently disposed to each other. The programmable logic controller modulates electric signals transmitted by the electric connection port and the transmission wire. The selected computer peripheral device detects the transmitted-back recognition signal to the programmable logic controller after modulating. A communication mode is established between the selected computer peripheral device and the programmable logic controller to restrain the crosstalk between transmission wires.

Description

Computer peripheral device control device and control method thereof

The present invention relates to a control device, and particularly to a control device for a computer peripheral device.

Computers often connect many peripheral devices through the motherboard for various applications. For example, a computer usually generates a lot of waste heat during operation, so a cooling fan is often equipped to adjust the internal temperature, so that various components of the computer will not stop functioning or be damaged due to overheating. With good fan control, the temperature of the computer can be kept within the normal range to maintain normal operation.

However, due to the trend of demand, the size of the computer is getting smaller and smaller, and with the increase of the computing speed of the processor, the temperature inside the computer is getting higher and higher, so the number of fans is also increasing, and the distance between them is also larger. come closer. In this way, it is easy to cause the signal lines to be too close together, which may cause coupling or communication problems that cause noise, which will result in the motherboard being unable to control the peripheral devices well. Therefore, how to control the peripheral devices of the computer to improve the reliability and performance is the focus of those in the art.

The "prior art" paragraph is only used to help understand the present disclosure, so the content disclosed in the "prior art" paragraph may contain some that do not constitute the prior art known to those with ordinary skill in the art. The content disclosed in the "prior art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.

The invention provides a control device for a computer peripheral device, which can reduce the chance of signal crosstalk and ensure the normal communication between the main board and the peripheral device.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

The control device of the computer peripheral device of the present invention is used to control the communication between a main board and a plurality of computer peripheral devices. The control device includes a programmable logic controller (PLC), a plurality of power lines and a plurality of electrical connection ports. The programmable logic controller is coupled to the motherboard. The electrical connection ports are coupled to the programmable logic controller through the power lines. One of the electrical connection ports is electrically connected to one of the computer peripheral devices through a plurality of transmission lines. The transmission lines are arranged adjacent to each other. A digital signal communicates between the programmable logic controller and a communication module of the computer peripheral device. The control device is configured to perform the following operations: the programmable logic controller sends a detection signal to the communication module of a selected one of the computer peripheral devices through the electrical connection port and the transmission lines, so that the computer peripheral The device operates in a detection mode. The programmable logic controller modulates an electrical signal transmitted through the electrical connection port and the transmission lines. The selected computer peripheral device detects the modulation and returns an identification signal to the programmable logic controller. and establishing a communication mode between the selected computer peripheral device and the programmable logic controller to suppress crosstalk between the transmission lines.

In an embodiment of the present invention, the computer peripheral device is a fan, the computer peripheral device transmits a rotational speed signal to the electrical connection port, the computer peripheral device has a device controller, and the electrical signal includes a A stop signal. After the programmable logic controller transmits the stop signal to the computer peripheral device through the electrical connection port, the device controller stops transmitting the rotational speed signal to the control device according to the stop signal. The programmable logic The controller generates a fan confirmation signal according to not receiving the speed signal.

In an embodiment of the present invention, the computer peripheral device is a fan, the computer peripheral device transmits a speed signal to the electrical connection port, the electrical signal includes a stop signal, the programmable logic controller After the stop signal is transmitted to the computer peripheral device through the electrical connection port, when the programmable logic controller receives the rotational speed signal, the programmable logic controller determines that the computer peripheral device does not have a device controller.

In an embodiment of the present invention, the electrical connection port includes a power transmission port, the control device transmits a power to the computer peripheral device through the power transmission port, and the electrical signal includes a voltage modulation signal, The programmable logic controller controls the voltage of the power to change from a first voltage to a second voltage according to the voltage modulation signal, and a device controller of the computer peripheral device generates the identification signal according to the second voltage.

In an embodiment of the present invention, the above-mentioned programmable logic controller controls the voltage of the power to change from the second voltage to the first voltage according to the identification signal.

In an embodiment of the present invention, the above-mentioned computer peripheral device is a fan, the electrical connection port includes a speed control signal transmission port, the electrical signal includes a confirmation signal, and the control device transmits the speed control signal through the control device The port transmits the confirmation signal to the computer peripheral device, and a device controller of the computer peripheral device generates the identification signal according to the confirmation signal.

In an embodiment of the present invention, the computer peripheral device is a fan, the electrical connection port includes a rotational speed transmission port, the computer peripheral device transmits a rotational speed signal to the rotational speed transmission port, and the electrical signal includes a rotational speed transmission port A confirmation signal, the programmable logic controller transmits the confirmation signal to the computer peripheral device through the electrical connection port, and a device controller of the computer peripheral device controls the rotation speed of the computer peripheral device from a first peripheral device according to the confirmation signal After the rotational speed is changed to a second rotational speed, the programmable logic controller generates a channel confirmation signal according to the rotational speed signal.

In an embodiment of the present invention, the computer peripheral device is a fan, the electrical connection port includes a rotational speed transmission port, the computer peripheral device transmits a rotational speed signal to the rotational speed transmission port, and the electrical signal includes a rotational speed transmission port A confirmation signal, the programmable logic controller transmits the confirmation signal to the computer peripheral device through the electrical connection port, and a device controller of the computer peripheral device controls the rotation speed of the computer peripheral device from a first peripheral device according to the confirmation signal After the rotational speed is changed to a second rotational speed, the device controller generates the identification signal according to the rotational speed signal.

In an embodiment of the present invention, the above-mentioned control device is disposed on a motherboard of an electronic device.

The control method of a computer peripheral device of the present invention is used to control the communication between a mainboard and a plurality of computer peripheral devices. The control method includes: providing a control device, the control device includes a programmable logic controller (PLC), a plurality of power lines and a plurality of electrical connection ports, the electrical connection ports pass through the power lines Coupling the programmable logic controller, one of the electrical connection ports is electrically connected to one of the computer peripheral devices through a plurality of transmission lines, the transmission lines are arranged adjacent to each other, the programmable logic controller and the computer peripheral A communication module of the device communicates with a digital signal. The programmable logic controller sends a detection signal to the selected communication module of the computer peripheral device through the electrical connection port and the transmission lines, so that the computer peripheral device operates in a detection mode. The programmable logic controller modulates an electrical signal transmitted through the electrical connection port and the transmission lines. The selected computer peripheral device detects the modulation and returns an identification signal to the programmable logic controller. and establishing a communication mode between the selected computer peripheral device and the programmable logic controller to suppress crosstalk between the transmission lines.

Based on the above, the control device of the computer peripheral device provided by the present invention modulates the electrical signal transmitted through the electrical connection port and the transmission line through the programmable logic controller, so that the selected computer peripheral device and the programmable logic A communication mode is established between the controllers to suppress the crosstalk between the transmission lines.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only for referring to the directions of the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the present invention.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of functional blocks of a control device 10 for a computer peripheral device according to an embodiment of the present invention. The control device 10 is used for controlling the communication between a mainboard 401 and a plurality of computer peripheral devices 20, 20a, 20b, 20x. The control device 10 includes a plurality of electrical connection ports 101, 101a, 101b, 101x. The electrical connection ports 101, 101a, 101b, and 101x are used for electrical connection to the computer peripheral devices 20, 20a, 20b, and 20x, respectively. The control device 10 communicates with the computer peripheral device 20 by a digital signal D. The present embodiment only takes four electrical connection ports 101 , 101 a , 101 b , and 101 x as an example, but the present invention does not limit the number of electrical connection ports. The control device 10 may be an independent device, or the control device 10 may be a circuit disposed on a motherboard (eg, a computer motherboard). The present invention does not limit the structure and form of the control device 10 . Through the control device 10, the computer peripheral devices 20, 20a, 20b, and 20x can be regulated, thereby improving reliability and performance. The present invention does not limit the types and types of the computer peripheral devices 20, 20a, 20b, and 20x. In an embodiment of the present invention, the computer peripheral devices 20, 20a, 20b, 20x can be, for example, cooling fans, and the cooling fans can provide other functions such as lighting or sound effects in addition to the function of air supply and heat dissipation. The specific operation details will be described in detail in FIG. 2 .

Please also refer to FIG. 2 , which is a schematic diagram of the control device 10 of the embodiment shown in FIG. 1 . The control device 10 is used for controlling the communication between a mainboard 401 and a plurality of computer peripheral devices 20, 20a, 20b, 20x. The control device 10 includes a programmable logic controller (PLC), a power line 105, and a plurality of electrical connection ports 101, 101a, 101b, and 101x. For the convenience of description, FIG. 2 only shows that the electrical connection port 101 of the control device 10 is connected to the computer peripheral device 20 as an example for illustration. The structure and operation details of the computer peripheral devices 20a, 20b, 20x may be similar to the computer peripheral device 20, and the details thereof will not be repeated.

In this embodiment, the programmable logic controller 103 of the control device 10 is coupled to the motherboard 401 . The electrical connection port 101 is coupled to the programmable logic controller 103 through the power line 105 . The electrical connection port 101 is electrically connected to the computer peripheral device 20 (ie, the communication module 201 connected to the computer peripheral device 20 ) through a plurality of transmission lines 30 . The transmission lines 30 are arranged adjacent to each other. A digital signal D communicates between the programmable logic controller 103 and a communication module 201 of the computer peripheral device 20 (as shown in FIG. 1 ).

The control device 10 is configured to perform the following operations:

(a) The programmable logic controller 103 sends a detection signal S1 to the selected communication module 201 of the computer peripheral device 20 through the electrical connection port 101 and the transmission lines 30, so that the computer peripheral The device 20 operates in a detection mode C. Among the plurality of computer peripheral devices 20 , 20 a , 20 b , and 20 x shown in FIG. 1 , the present embodiment takes selecting the computer peripheral device 20 to enter the detection mode C as an example for illustration.

(b) The programmable logic controller 103 performs a modulation (Modulation) M on an electrical signal S2 transmitted through the electrical connection port 101 and the transmission lines 30 .

(c) The selected computer peripheral device 20 detects the modulation M and then returns an identification signal S3 to the programmable logic controller 103.

(d) A communication mode CM is established between the selected computer peripheral device 20 and the programmable logic controller 103 to suppress crosstalk between the transmission lines 30 .

In an embodiment of the present invention, the control device 10 is designed to determine that the motherboard 401 and the computer peripheral device 20 have communication compatibility as soon as the programmable logic controller 103 receives the identification signal S3, Instead, the communication mode CM can be established. In this embodiment, since the transmission lines 30 are disposed adjacent to each other, crosstalk may occur. By establishing the communication mode CM, it can be ensured that the signal transmission between the motherboard 401 and the computer peripheral device 20 is not affected by the crosstalk generated between the transmission lines 30 of the computer peripheral device 20 .

As shown in FIG. 1, in other embodiments of the present invention, the crosstalk generated between the transmission lines 30, 30a, 30b, 30c, 30x can be correspondingly generated by the communication modes CM, CMa, CMb, CMc, CMx inhibition. The technical details of the communication modes CMa, CMb, CMc, and CMx may be similar to the communication mode CM, and the details thereof will not be repeated. The specific operation details will be described in detail in the following description.

In FIG. 1 , for the convenience of description, the transmission lines 30 , 30 a , 30 b , 30 c and 30 x are only represented by a single line. The transmission lines 30, 30a, 30b, 30c, 30x may include multiple transmission lines as needed.

The identification signal S3 includes information of the computer peripheral device 20 , such as an ID (identification) corresponding to the computer peripheral device 20 . Thereby, the control device 10 can control, adjust and analyze the connected computer peripheral devices 20, 20a, 20b, 20x according to the identification signal S3, thereby greatly improving the overall applicability.

The following is an example of the above-mentioned modulation M. In this embodiment, the computer peripheral device 20 can be, for example, a fan, but the present invention is not limited to this. According to the design of this embodiment, the computer peripheral device 20 normally returns a rotational speed signal S4 to the electrical connection port 101 , for example, returns the rotational speed signal S4 every several seconds. The computer peripheral device 20 has a device controller 203 . The electrical signal S2 includes a stop signal ST. After the programmable logic controller 103 transmits the stop signal ST to the computer peripheral device 20 through the electrical connection port 101, the device controller 203 stops transmitting the rotational speed signal S4 to the control device 10 according to the stop signal ST ( This embodiment does not limit whether the computer peripheral device 20 changes the operating state). The programmable logic controller 103 of the control device 10 generates a fan confirmation signal S5 according to the failure to receive the rotational speed signal S4. The fan confirmation signal S5 may include the information of the computer peripheral device 20, so that the control device 10 can know The computer peripheral device 20 is a computer peripheral device having the device controller 203; or, it represents whether the motherboard 401 and the computer peripheral device 20 have communication compatibility.

1 again, the control device 10 further includes an electrical connection port 101c, and the electrical connection port 101c is electrically connected to a fan F. The structure and function of the electrical connection port 101c are similar to the aforementioned electrical connection ports 101, 101a, 101b, and 101x. The fan F normally returns a rotational speed signal S4a to the electrical connection port 101c. The electrical signal between the electrical connection port 101c and the fan F includes the stop signal ST as described above. After the programmable logic controller 103 transmits the stop signal ST to the fan F through the electrical connection port 101c, when the programmable logic controller 103 still receives the rotational speed signal S4a, the programmable logic control The controller 103 determines that the fan F does not have a device controller 203 as described above; alternatively, it can be determined that the fan F does not have communication compatibility with the motherboard 401 (for example, the fan F is an analog fan ), the communication mode CM cannot be established. Conversely, after the programmable logic controller 103 transmits the stop signal ST to the fan F through the electrical connection port 101c, when the programmable logic controller 103 no longer receives the rotational speed signal S4a, the programmable logic controller 103 stops receiving the rotational speed signal S4a. The logic controller 103 determines that the fan F has a device controller 203 as described above; alternatively, it can be determined accordingly that the fan F has communication compatibility with the motherboard 401 (for example, the fan F is a digital fan), and the communication mode CM can be established. In an embodiment of the present invention, the fan F can also be implemented, for example, as a digital fan without a device controller.

Please refer to FIG. 3 at the same time. FIG. 3 is a schematic diagram of voltage modulation of electric power according to an embodiment of the present invention. The following is another example of the above-mentioned modulation M. In an embodiment of the present invention, the electrical connection port 101 of the control device 10 includes a power transmission port 1013 . The control device 10 transmits a power E to the computer peripheral device 20 through the power transmission port 1013 and the transmission line 30 . The power E is used to provide the power required for the computer peripheral device 20 to operate. FIG. 3 is an illustrative diagram of the voltage versus time of the power E. FIG.

The electrical signal S2 includes a voltage modulation signal S6. At time t1, the programmable logic controller 103 controls the voltage of the power E to change from a first voltage V1 to a second voltage V2 according to the voltage modulation signal S6. If the device controller 203 of the computer peripheral device 20 cannot recognize the change in the voltage of the power E, no corresponding feedback will be generated. In this case, it means that the computer peripheral device 20 does not have a device as described above. The controller 203; or, it can be determined accordingly that the computer peripheral device 20 and the motherboard 401 do not have communication compatibility, and the communication mode CM cannot be established. On the contrary, if the device controller 203 of the computer peripheral device 20 can recognize the change of the voltage of the power E, it will generate the identification signal S3 according to the second voltage V2. In this case, it means that the computer peripheral device 20 has A device controller 203 as described above; alternatively, it can be determined that the computer peripheral device 20 and the motherboard 401 have communication compatibility, and the communication mode CM can be established.

In this embodiment, a communication mode CM is established between the computer peripheral device 20 and the programmable logic controller 103 . By changing the voltage of the power E required by the computer peripheral device 20 to operate, the computer peripheral device 20 generates the identification signal S3 according to the voltage change.

The first voltage V1 may be a standard voltage for normal operation of the computer peripheral device 20 , and the second voltage V2 may be greater or less than the first voltage V1 , for example. In addition, the programmable logic controller 103 can receive the identification signal S3 and control the voltage of the power E to change from the second voltage V2 to the first voltage V1 according to the identification signal S3 (as shown at time t2 in FIG. 3 ) Show). After the identification signal S3 has been generated through the change of the voltage, the control device 10 can adjust the voltage of the power E back to the first voltage V1. The control device 10 may include a power source 107 to provide the power E.

The following is another example of the above-mentioned modulation M. In an embodiment of the present invention, the computer peripheral device 20 may be a fan. The electrical connection port 101 includes a speed control signal transmission port 1011 . The electrical signal S2 includes a confirmation signal S7. The control device 10 transmits the confirmation signal S7 to the computer peripheral device 20 through the rotational speed control signal transmission port 1011 and the transmission line 30 . The device controller 203 of the computer peripheral device 20 generates the identification signal S3 according to the confirmation signal S7. The rotational speed control signal transmission port 1011 may be, for example, a pulse width modulation (Pulse Width Modulation) transmission port for transmitting a control signal (not shown) for controlling the rotational speed of the blades of the fan. For example, the control signal may be is a PWM signal or a voltage on the PWM transmission port.

The programmable logic controller 103 changes the PWM signal or changes the voltage on the PWM transmission port. If the device controller 203 of the computer peripheral device 20 cannot recognize the change, no corresponding feedback will be generated. In this case, it means that the computer peripheral device 20 does not have a device controller 203 as described above; or , it can be determined that the computer peripheral device 20 and the motherboard 401 do not have communication compatibility, and the communication mode CM cannot be established. On the contrary, if the device controller 203 of the computer peripheral device 20 can recognize the change, the identification signal S3 will be generated, in this case, it means that the computer peripheral device 20 has the device controller 203 as described above; Alternatively, it can be determined based on this that the computer peripheral device 20 and the motherboard 401 have communication compatibility, and the communication mode CM can be established.

In this embodiment, a communication mode CM is established between the computer peripheral device 20 and the programmable logic controller 103 . The confirmation signal S7 is transmitted through the rotational speed control signal transmission port 1011, and the device controller 203 of the computer peripheral device 20 generates the identification signal S3 according to the confirmation signal S7.

The following is another example of the above-mentioned modulation M. In an embodiment of the present invention, the computer peripheral device 20 may be a fan. The electrical connection port 101 of the control device 10 includes a rotational speed transmission port 1015 . The fan transmits the rotational speed signal S4 to the rotational speed transmission port 1015 through the transmission line 30 . The electrical signal S2 includes a confirmation signal S7. The programmable logic controller 103 transmits the confirmation signal S7 to the fan through the electrical connection port 101 . After the device controller 203 of the fan controls the rotational speed of the blades from a first rotational speed (not shown) to a second rotational speed (not shown) according to the confirmation signal S7, the programmable logic controller 103 The rotational speed signal S4 generates a channel confirmation signal S8.

If the rotational speed of the blades of the fan does not change, there will be no corresponding feedback. In this case, it means that the fan does not have a device controller 203 as described above; or, the fan and the motherboard can be determined accordingly. 401 does not have communication compatibility, the communication mode CM cannot be established. Conversely, if the device controller 203 of the fan can recognize the change, in this case, it means that the fan has a device controller 203 as described above; or, it can be determined that the fan is connected to the motherboard. 401 has communication compatibility, and the communication mode CM can be established.

In this embodiment, a communication mode CM is established between the computer peripheral device 20 and the programmable logic controller 103 . The rotation speed of the computer peripheral device 20 is changed through control, and the channel confirmation signal S8 is generated by detecting the rotation speed change of the computer peripheral device 20 . The function and function of the channel confirmation signal S8 can be similar to the identification signal S3, for example, the control device 10 can control, modulate and analyze the connected computer peripheral devices 20, 20a, 20b, 20x according to the channel confirmation signal S8, Significantly improve overall operational efficiency. The programmable logic controller 103 may, for example, transmit the confirmation signal S7 through the rotational speed control signal transmission port 1011 . In this embodiment, the confirmation signal S7 is a modulation signal of the rotational speed of the fan.

In an embodiment of the present invention, the computer peripheral device 20 may be, for example, a fan. The electrical connection port 101 of the control device 10 includes a rotational speed transmission port 1015 . The computer peripheral device 20 transmits the rotational speed signal S4 to the rotational speed transmission port 1015 through the transmission line 30 . The electrical signal S2 includes a confirmation signal S7. The programmable logic controller 103 transmits the confirmation signal S7 to the computer peripheral device 20 through the electrical connection port 101 . After a device controller 203 of the computer peripheral device 20 controls the rotational speed of the computer peripheral device 20 to change from a first rotational speed (not shown) to a second rotational speed (not shown) according to the confirmation signal S7, the computer peripheral The device controller 203 of the device 20 generates the identification signal S3 according to the rotational speed signal S4.

In this embodiment, a communication mode CM is established between the computer peripheral device 20 and the programmable logic controller 103 . The rotational speed of the computer peripheral device 20 is changed through control, and the computer peripheral device 20 generates the identification signal S3 according to the change of the rotational speed.

Please refer to FIG. 4 , which is a schematic diagram of a control device 10 a according to another embodiment of the present invention. The structure and function of the control device 10a of this embodiment are similar to the control device 10 shown in FIG. 1 and FIG. 2 . The difference between this embodiment and the embodiment shown in FIG. 1 and FIG. 2 is that the control device 10 a of this embodiment is disposed on a motherboard 401 a of an electronic device 40 . The control device 10a may be, for example, a circuit and/or element disposed on the motherboard 401a.

Please refer to FIG. 5 . FIG. 5 is a flowchart of a control method of a computer peripheral device according to an embodiment of the present invention. Please refer to Figure 1 and Figure 2 at the same time. The steps of the fan control method include: in step S101, a control device 10 is provided. Next, in step S103, a programmable logic controller 103 sends a detection signal S1 to a selected communication module 201 of the computer peripheral device 20 via an electrical connection port 101 and the transmission line 30, so that the The computer peripheral device 20 operates in a detection mode C. Next, in step S105 , the programmable logic controller 103 performs a modulation (Modulation) M on an electrical signal S2 transmitted through the electrical connection port 101 and the transmission lines 30 . In step S107 , the computer peripheral device 20 detects the modulation M and returns an identification signal S3 to the programmable logic controller 103 . In step S109 , a communication mode CM is established between the selected computer peripheral device 20 and the programmable logic controller 103 to suppress the crosstalk between the transmission lines 30 .

Multiple implementation details of the above steps are described in detail in the foregoing multiple embodiments and implementation manners, which will not be repeated below.

To sum up, the control device of the computer peripheral device of the embodiment of the present invention modulates the electrical signal transmitted through the electrical connection port and the transmission line through the programmable logic controller, so that the selected computer peripheral device and the available computer peripheral device can be modulated. A communication mode is established between the programmed logic controllers to suppress crosstalk between transmission lines.

10, 10a: Control device 101, 101a, 101b, 101c, 101x: electrical connection ports 1011: Speed control signal transmission port 1013: Power Delivery Port 1015: Speed port 103: Programmable Logic Controller 105: Power lines 107: Power 20, 20a, 20b, 20x: Computer peripherals 201: Communication module 203: Device Controller 30, 30a, 30b, 30c, 30x: Transmission lines 40: Electronics 401, 401a: Motherboard C: detection mode CM, CMa, CMb, CMc, CMx: Communication Mode D: digital signal E: Electricity F: Fan M: Modulation S1: detect signal S2: electrical signal S3: Identification signal S4, S4a: Speed signal S5: Fan confirmation signal S6: Voltage modulation signal S7: Confirmation signal S8: channel confirmation signal ST: stop signal t1: time point t2: time point V1: first voltage V2: The second voltage

FIG. 1 is a schematic diagram of functional blocks of a control device for a computer peripheral device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of functional blocks of a control device of a computer peripheral device according to an embodiment of the present invention. FIG. 3 is a schematic diagram of voltage modulation of electric power according to an embodiment of the present invention. FIG. 4 is a schematic diagram of a control device of a computer peripheral device according to another embodiment of the present invention. FIG. 5 is a flowchart of a control method of a computer peripheral device according to an embodiment of the present invention.

10: Control device

101: Electrical connection port

1011: Speed control signal transmission port

1013: Power Delivery Port

1015: Speed port

103: Programmable Logic Controller

105: Power lines

107: Power

20: Computer Peripherals

201: Communication module

203: Device Controller

30: Transmission line

401: Motherboard

C: detection mode

CM: Communication Mode

E: Electricity

M: Modulation

S1: detect signal

S2: electrical signal

S3: Identification signal

S4: Speed signal

S5: Fan confirmation signal

S6: Voltage modulation signal

S7: Confirmation signal

S8: channel confirmation signal

ST: stop signal

Claims (10)

A control device for computer peripheral devices, used for controlling the communication between a mainboard and a plurality of computer peripheral devices, the control device includes: a programmable logic controller (PLC) coupled to the motherboard; multiple power lines; and a plurality of electrical connection ports, the electrical connection ports are coupled to the programmable logic controller through the power lines, one of the electrical connection ports is electrically connected to one of the computer peripheral devices through a plurality of transmission lines, the The transmission lines are arranged adjacent to each other, and a digital signal communicates between the programmable logic controller and a communication module of the computer peripheral device; wherein the control device is configured to perform the following operations: The programmable logic controller sends a detection signal to the selected communication module of the computer peripheral device through the electrical connection port and the transmission lines, so that the computer peripheral device operates in a detection mode; The programmable logic controller modulates an electrical signal transmitted through the electrical connection port and the transmission lines; The selected computer peripheral device detects the modulation and returns an identification signal to the programmable logic controller; and A communication mode is established between the selected computer peripheral device and the programmable logic controller to suppress crosstalk between the transmission lines. The computer peripheral device control device as claimed in claim 1, wherein the computer peripheral device is a fan, the computer peripheral device transmits a rotational speed signal to the electrical connection port, the computer peripheral device has a device controller, the electrical The sexual signal includes a stop signal. After the programmable logic controller transmits the stop signal to the computer peripheral device through the electrical connection port, the device controller stops transmitting the rotational speed signal to the control device according to the stop signal. The programmable logic controller generates a fan confirmation signal according to not receiving the speed signal. The control device for a computer peripheral device as claimed in claim 1, wherein the computer peripheral device is a fan, the computer peripheral device transmits a speed signal to the electrical connection port, the electrical signal includes a stop signal, and the programmable After the programmable logic controller transmits the stop signal to the computer peripheral device through the electrical connection port, when the programmable logic controller receives the rotational speed signal, the programmable logic controller determines that the computer peripheral device does not have a Device Controller. The control device for a computer peripheral device as claimed in claim 1, wherein the electrical connection port includes a power transmission port, the control device transmits a power to the computer peripheral device through the power transmission port, and the electrical signal includes a voltage A modulation signal, the programmable logic controller controls the voltage of the power to change from a first voltage to a second voltage according to the voltage modulation signal, and a device controller of the computer peripheral device generates the power according to the second voltage Identify the signal. The control device for a computer peripheral device as claimed in claim 4, wherein the programmable logic controller controls the voltage of the power to change from the second voltage to the first voltage according to the identification signal. The control device for a computer peripheral device as claimed in claim 1, wherein the computer peripheral device is a fan, the electrical connection port includes a speed control signal transmission port, the electrical signal includes a confirmation signal, and the control device passes the The rotational speed control signal transmission port transmits the confirmation signal to the computer peripheral device, and a device controller of the computer peripheral device generates the identification signal according to the confirmation signal. The control device for a computer peripheral device as claimed in claim 1, wherein the computer peripheral device is a fan, the electrical connection port includes a rotational speed transmission port, the computer peripheral device transmits a rotational speed signal to the rotational speed transmission port, and the electrical connection port includes a rotational speed transmission port. The sexual signal includes a confirmation signal, the programmable logic controller transmits the confirmation signal to the computer peripheral device through the electrical connection port, and a device controller of the computer peripheral device controls the rotational speed of the computer peripheral device according to the confirmation signal After changing from a first rotation speed to a second rotation speed, the programmable logic controller generates a channel confirmation signal according to the rotation speed signal. The control device for a computer peripheral device as claimed in claim 1, wherein the computer peripheral device is a fan, the electrical connection port includes a rotational speed transmission port, the computer peripheral device transmits a rotational speed signal to the rotational speed transmission port, and the electrical connection port includes a rotational speed transmission port. The sexual signal includes a confirmation signal, the programmable logic controller transmits the confirmation signal to the computer peripheral device through the electrical connection port, and a device controller of the computer peripheral device controls the rotational speed of the computer peripheral device according to the confirmation signal After changing from a first rotation speed to a second rotation speed, the device controller generates the identification signal according to the rotation speed signal. The control device for a computer peripheral device as claimed in claim 1, wherein the control device is disposed on a motherboard of an electronic device. A control method of a computer peripheral device, used for controlling the communication between a mainboard and a plurality of computer peripheral devices, the control method comprising: Provide a control device, the control device includes a programmable logic controller (Programmable Logic Controller, PLC), a plurality of power lines and a plurality of electrical connection ports, the electrical connection ports are coupled to the programmable logic controller through the power lines A programmable logic controller, wherein one of the electrical connection ports is electrically connected to one of the computer peripheral devices through a plurality of transmission lines, and the transmission lines are arranged adjacent to each other, the programmable logic controller and a communication mode of the computer peripheral device Communication between groups by a digital signal; The programmable logic controller sends a detection signal to the selected communication module of the computer peripheral device through the electrical connection port and the transmission lines, so that the computer peripheral device operates in a detection mode; The programmable logic controller modulates an electrical signal transmitted through the electrical connection port and the transmission lines; The selected computer peripheral device detects the modulation and returns an identification signal to the programmable logic controller; and A communication mode is established between the selected computer peripheral device and the programmable logic controller to suppress crosstalk between the transmission lines.

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