TWI739463B - Computer peripheral device control device and control method thereof - Google Patents

Abstract

A control device of a computer peripheral device, used for controlling a main board and a plurality of computer peripheral devices Communication between. The control device includes a programmable logic controller, a plurality of power lines and a plurality of electrical connection ports. 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 modulates the electrical signal transmitted through the electrical connection port and the transmission line. The selected computer peripheral device detects the modulation and returns the identification signal to the programmable logic controller. A communication mode is established between the selected computer peripheral device and the programmable logic controller.

Description

Computer peripheral device control device and control method thereof

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

Computers often connect many peripheral devices through the motherboard for various applications. For example, when a computer is operating, a lot of waste heat is usually generated. Therefore, a cooling fan is often configured to adjust the internal temperature so that various components of the computer will not stop operating 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 as the computing speed of the processor increases, the temperature inside the computer is getting higher and higher, so the number of fans also increases, and the distance between each other is also increased. Coming closer. As a result, it is easy for the signal lines to be too close to each other, which may cause coupling or noise-causing communication problems, resulting in the motherboard's inability to properly control peripheral devices. Therefore, how to control the peripheral devices of the computer to improve the reliability and performance is the focus of attention by those in the art.

The "prior art" paragraph is only used to help understand the content of the present invention, so the contents disclosed in the "prior art" paragraph may include some conventional technologies that do not constitute the common knowledge in the technical field. 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 ensure that the signal transmission between a main board and the peripheral device is not affected by the crosstalk generated between the transmission lines, and the communication can be normal.

The other objectives 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 motherboard and a plurality of computer peripheral devices. The control device includes a Programmable Logic Controller (PLC), multiple power lines and multiple electrical connection ports. The programmable logic controller is coupled to the motherboard. The electrical ports are coupled to the programmable logic controller through the power lines, one of the electrical 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 A digital signal is used to communicate 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 computer peripheral device via 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 a communication mode is established between the selected computer peripheral device and the programmable logic controller.

In an embodiment of the present invention, the aforementioned computer peripheral device is a fan, the computer peripheral device transmits a speed signal to the electrical connection port, the computer peripheral device has a device controller, and the electrical 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 sending the speed signal to the control device according to the stop signal, the programmable logic The controller generates a fan confirmation signal according to the unreceived speed signal.

In an embodiment of the present invention, the above-mentioned 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 logic controller After transmitting the stop signal to the computer peripheral device through the electrical connection port, when the programmable logic controller receives the 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 above-mentioned 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 through the speed control signal 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 aforementioned 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 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 according to the confirmation signal After the rotation speed is changed to a second rotation speed, the programmable logic controller generates a channel confirmation signal according to the rotation speed signal.

In an embodiment of the present invention, the aforementioned 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 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 according to the confirmation signal After the rotation speed is changed to a second rotation speed, the device controller generates the identification signal according to the rotation speed signal.

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

The computer peripheral device control method of the present invention is used to control the communication between a motherboard and a plurality of computer peripheral devices. The control method includes: providing a control device, the control device including a programmable logic controller (Programmable Logic Controller, PLC), a plurality of power lines and a plurality of electrical connection ports, the electrical connection ports through the power lines Coupled to the programmable logic controller, one of the electrical 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 a communication mode is established between the selected computer peripheral device and the programmable logic controller.

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 ensure that the host The signal transmission between the board and the computer peripheral device is not affected by the crosstalk generated between the transmission lines of the computer peripheral device.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

10.10a: Control device

101, 101a, 101b, 101c, 101x: electrical connection ports

1011: Speed control signal transmission port

1013: Power Transmission Port

1015: Speed transmission port

103: programmable logic controller

105: Power line

107: Power

20, 20a, 20b, 20x: computer peripherals

201: Communication module

203: Device Controller

30, 30a, 30b, 30c, 30x: transmission line

40: electronic device

401, 401a: motherboard

C: Detection mode

CM, CMa, CMb, CMc, CMx: communication mode

D: Digital signal

E: Electricity

F: Fan

M: Modulation

S1: Detection 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: point in time

t2: point in time

V1: first voltage

V2: second voltage

FIG. 1 is a schematic diagram of a functional block of a control device of a computer peripheral device according to an embodiment of the present invention.

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.

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.

The foregoing and other technical content, 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, for example: up, down, left, right, front or back, etc., are only directions for referring to the attached drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a functional block of a control device 10 of a computer peripheral device according to an embodiment of the present invention. The control device 10 is used to control the communication between a main board 401 and a plurality of computer peripheral devices 20, 20a, 20b, and 20x. The control device 10 includes a plurality of electrical connection ports 101, 101a, 101b, and 101x. The electrical connection ports 101, 101a, 101b, and 101x are used to electrically connect to the computer peripheral devices 20, 20a, 20b, and 20x, respectively. The control device 10 communicates with the computer peripheral device 20 via a digital signal D. In this embodiment, only four electrical connection ports 101, 101a, 101b, and 101x are taken as examples, but the present invention does not limit the number of electrical connection ports. The control device 10 It can be an independent device, or the control device 10 can be a circuit set on a motherboard (such as a computer motherboard), and 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 controlled, which can improve the reliability and performance. The 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, and 20x may be, for example, a heat dissipation fan, and the heat dissipation fan may also provide other functions such as light emission 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 to control the communication between a main board 401 and a plurality of computer peripheral devices 20, 20a, 20b, and 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, 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. The structure and operation details of the computer peripheral devices 20a, 20b, and 20x may be similar to the computer peripheral device 20, and the details are not 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 (that is, connected to the communication module 201 of the computer peripheral device 20) through a plurality of transmission lines 30. The transmission lines 30 are arranged adjacent to each other. The programmable logic controller 103 communicates with a communication module 201 of the computer peripheral device 20 via a digital signal D (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 a selected communication module of the computer peripheral device 20 via the electrical connection port 101 and the transmission lines 30 201. Make the computer peripheral device 20 operate in a detection mode C. Among the multiple computer peripheral devices 20, 20a, 20b, and 20x shown in FIG. 1, this embodiment takes the computer peripheral device 20 selected to enter the detection mode C as an example.

(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 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 ensure that the signal transmission between the motherboard 401 and the computer peripheral device 20 is not affected by the computer peripheral device The influence of crosstalk generated between the transmission lines 30 of the device 20.

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. The communication mode CM can be established. In this embodiment, since the transmission lines 30 are arranged 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.

The technical details of the communication modes CMa, CMb, CMc, and CMx can be similar to the communication mode CM, and the details are not repeated. The specific operation details will be explained in detail in the following description.

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

The identification signal S3 includes information of the computer peripheral device 20, for example, includes 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, and 20x according to the identification signal S3, which greatly improves the overall applicability.

The following is an example of the above-mentioned modulation M. In this embodiment, the computer peripheral device 20 may be, for example, a fan, but the present invention is not limited thereto. 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 few 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 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 its operating state). The programmable logic controller 103 of the control device 10 generates a fan confirmation signal S5 based on not receiving the rotation speed signal S4. The fan confirmation signal S5 may include 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.

Please refer to FIG. 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 rotating 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 speed signal S4a, the programmable logic control The device 103 determines that the fan F does not have the The device controller 203; or, based on this, it can be determined that the fan F is incompatible with the motherboard 401 (for example, the fan F is an analog fan), and 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 speed signal S4a, the programmable logic controller 103 The logic logic controller 103 determines that the fan F has a device controller 203 as described above; alternatively, it can determine 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 may also be implemented as a digital fan without a device controller, for example.

Please refer to FIG. 3 at the same time. FIG. 3 is a schematic diagram of power voltage modulation 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 power required for the operation of the computer peripheral device 20. Fig. 3 is a schematic diagram illustrating the voltage and time of the electric power E.

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 the aforementioned device The controller 203; or, based on this, 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. Conversely, if the device controller 203 of the computer peripheral device 20 can recognize the change in the voltage of the power E, it will generate the identification signal S3 according to the second voltage V2, in this case, it means the computer The peripheral device 20 has a device controller 203 as described above; or, based on this, it can be determined that the computer peripheral device 20 has communication compatibility with the motherboard 401, 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 for the operation of the computer peripheral device 20, the computer peripheral device 20 generates the identification signal S3 according to the change in voltage.

The first voltage V1 may be a standard voltage for the normal operation of the computer peripheral device 20, and the second voltage V2 may be greater than 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 from the second voltage V2 to the first voltage V1 according to the identification signal S3 (as shown at the time point t2 in FIG. 3). Show). After the identification signal S3 has been generated through the change in 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 rotational 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 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 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) that controls the speed of the fan blades. For example, the control signal may be It is a pulse width modulation signal or a voltage on the pulse width modulation transmission port.

The programmable logic controller 103 changes the pulse width modulation signal or changes the voltage on the pulse width modulation 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 the computer peripheral device 20 It does not have the device controller 203 as described above; or, based on this, 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. Conversely, 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 a device controller 203 as described above; Alternatively, it can be determined based on this that the computer peripheral device 20 has communication compatibility with the motherboard 401, 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 speed signal S4 to the 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 rotation speed of the blades from a first rotation speed (not shown) to a second rotation speed (not shown) according to the confirmation signal S7, the programmable logic controller 103 according to the The speed signal S4 generates a channel confirmation signal S8.

If there is no change in the speed of the fan blades, there will be no corresponding feedback. In this case, it means that the fan does not have the 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 The device controller 203 as described above; or, based on this, it can be determined that the fan has communication compatibility with the motherboard 401, 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, and 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 the efficiency of the overall operation. The programmable logic controller 103 may transmit the confirmation signal S7 through the rotational speed control signal transmission port 1011, for example. In this embodiment, the confirmation signal S7 is a modulation signal of the fan speed.

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 rotation speed of the computer peripheral device 20 from a first rotation speed (not shown) to a second rotation 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 rotation 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 rotation 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 in the rotation speed.

Please refer to FIG. 4, which is a schematic diagram of a control device 10a 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 FIGS. 1 and 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 provided 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. Then, 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 a transmission line 30, so that the The computer peripheral device 20 operates in a detection mode C. Then, 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 ensure that the signal transmission between the motherboard 401 and the computer peripheral device 20 is not affected by the The influence of crosstalk generated between the transmission lines 30 of the computer peripheral device 20.

Regarding the multiple implementation details of the foregoing steps, the foregoing multiple embodiments and implementation manners have been described in detail, and will not be described in detail below.

In summary, 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 A communication mode is established between the programmable logic controllers to ensure that the signal transmission between the motherboard and the computer peripheral devices is not affected by the crosstalk generated between the transmission lines of the computer peripheral devices.

10: Control device

101: electrical port

1011: Speed control signal transmission port

1013: Power Transmission Port

1015: Speed transmission port

103: programmable logic controller

105: Power line

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: Detection 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 (4)

A control device for a computer peripheral device is used to establish communication between a motherboard and a plurality of computer peripheral devices, wherein the computer peripheral device is a fan, and the control device includes: a Programmable Logic Controller , PLC), coupled to the motherboard; multiple power lines; and multiple electrical ports, the electrical ports are coupled to the programmable logic controller through the power lines, and one of the electrical ports passes A plurality of transmission lines are electrically connected to one of the computer peripheral devices, the transmission lines are arranged adjacent to each other, and the programmable logic controller communicates with a communication module of the computer peripheral device by a digital signal; wherein, the control The device is configured to perform the following operations: the computer peripheral device normally returns a speed signal via the transmission line to the electrical port of the programmable logic controller; the programmable logic controller transmits through the electrical port A stop signal to the computer peripheral device; and the programmable logic controller determines whether to establish a communication mode with the computer peripheral device according to whether the speed signal is received from the computer peripheral device; wherein, when the programmable logic When the controller still receives the speed signal after transmitting the stop signal, the programmable logic controller determines that the computer peripheral device that transmits the speed signal does not have a device controller and does not establish the communication mode with the computer peripheral device , When the programmable logic controller does not receive the speed signal after transmitting the stop signal, the programmable logic controller determines that the computer peripheral device that does not transmit the speed signal has the device controller and is connected to the computer The peripheral device establishes this communication mode. A control device for a computer peripheral device is used to establish communication between a motherboard and a plurality of computer peripheral devices, wherein the computer peripheral device is a fan, and the control device includes: a Programmable Logic Controller , PLC), coupled to the motherboard; multiple power lines; and multiple electrical ports, the electrical ports are coupled to the programmable logic controller through the power lines, and one of the electrical ports passes A plurality of transmission lines are electrically connected to one of the computer peripheral devices, the transmission lines are arranged adjacent to each other, and the programmable logic controller communicates with a communication module of the computer peripheral device by a digital signal; wherein, the control The device is configured to perform the following operations: transmit a power to the computer peripheral device through a power transmission port of the electrical port; the programmable logic controller controls the voltage of the power from a first voltage according to a voltage modulation signal Change to a second voltage; the computer peripheral device recognizes the change in the voltage of the power and generates an identification signal; and the programmable logic controller determines whether to communicate with the computer based on whether the identification signal is received from the computer peripheral device The peripheral device establishes a communication mode; wherein, when the programmable logic controller receives the identification signal after adjusting the voltage of the power, the programmable logic controller determines that the computer peripheral device has the device controller and and The computer peripheral device establishes the communication mode, and when the programmable logic controller does not receive the identification signal after adjusting the voltage of the power, the programmable logic controller determines that the computer peripheral device does not have the device controller The communication mode is not established with the computer peripheral device. A control device for a computer peripheral device is used to establish communication between a motherboard and a plurality of computer peripheral devices, wherein the computer peripheral device is a fan, and the control device includes: A Programmable Logic Controller (PLC) coupled to the motherboard; a plurality of power lines; and a plurality of electrical ports, the electrical ports are coupled to the programmable logic through the power lines 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 a communication module of the computer peripheral device Communicate with a digital signal; wherein, the control device is configured to perform the following operations: the programmable logic controller transmits a confirmation signal to the computer peripheral device; the computer peripheral device is based on whether the programmable logic controller has The communication compatibility changes from a first rotation speed to a second rotation speed according to the confirmation signal; the computer peripheral device generates an identification signal according to the change of the rotation speed; and the programmable logic controller according to whether it receives from the computer peripheral device To the identification signal, determine whether to establish a communication mode with the computer peripheral device; wherein, when the programmable logic controller receives the identification signal after adjusting the speed of the fan, the programmable logic controller determines the The computer peripheral device has the device controller and establishes the communication mode with the computer peripheral device. When the programmable logic controller does not receive the identification signal after adjusting the fan speed, the programmable logic controller determines The computer peripheral device does not have the device controller and does not establish the communication mode with the computer peripheral device. The control device for a computer peripheral device according to any one of claims 1 to 3, wherein the control device is disposed on a motherboard of an electronic device.

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