TWM538089U - Multi-fan single-line output system of rotating speeds - Google Patents

Description

Multi-fan speed single line output system

This creation is about the fan field, especially for multi-fan speed single-line output systems and methods.

The fan is widely used in an electronic device, and can effectively remove the heat source in the electronic device from the outside of the electronic device casing, thereby maintaining the normal operation of the electronic device. The conventional multi-fan speed output is to output the actual speed of each fan to the system end, and then the system side performs logic operation according to the rotation speed of these fans, so that the calculation load of the system side increases, and then the whole system operation delays, the system The heat inside is increased, so how to reduce the system operation load, and thus reduce the heat energy in the system is the direction that people in the field must work hard.

Therefore, in order to effectively solve the above problems, the purpose of the present invention is to provide a system and method for transmitting the rotational speeds of a plurality of fans to one of the fan logic operations and outputting the rotational speed.

Another object of the present invention is to provide a system and method that makes it easier to monitor the operational status of multiple fans.

To achieve the above objective, the present invention provides a multi-fan speed single-line output system, comprising: a first fan having a first control element receiving a first rotational speed of the first fan; and a second fan having a second The control component receives a second rotational speed of the second fan; wherein the first control element of the first fan A second control element of the second fan is coupled to transmit the first rotational speed to the second control component, and the second control component generates an output rotational speed based on the first rotational speed and the second rotational speed.

In one implementation, the first fan and the second fan are connected to a control end.

In one implementation, the control terminal connects the first fan and the second fan through a power line and a ground line and a driving signal line.

In one implementation, the second control element of the second fan is coupled to a speed monitoring terminal and transmits the output speed to the speed monitoring terminal.

In one implementation, the second control component selects the first rotational speed or the second rotational speed output based on the rotational speed of both the first rotational speed and the second rotational speed.

In one implementation, the second control element generates the output rotational speed based on the average rotational speed of the first rotational speed and the second rotational speed.

The present invention further provides a multi-fan speed single-line output method, comprising: driving a first fan and a second fan to generate a first rotation speed and a second rotation speed; and transmitting the first rotation speed of the first fan to the second a fan; generating, by the second fan, the first rotational speed and the second rotational speed to generate an output rotational speed.

In one implementation, the second fan compares the rotational speeds of the first rotational speed and the second rotational speed, and generates the output rotational speed according to the high or low rotational speed.

In one implementation, the second fan generates the output rotational speed based on the average rotational speed of the first rotational speed and the second rotational speed.

11‧‧‧First fan

111‧‧‧First control element

S1‧‧‧ first speed

12‧‧‧second fan

121‧‧‧Second control element

S2‧‧‧second speed

13‧‧‧Control terminal

14‧‧‧Speed monitoring terminal

VCC‧‧‧ power cord

GND‧‧‧ Grounding wire

PWM‧‧‧ drive signal line

SP1, SP2, SP3, S201, S202a, S202b‧‧‧ steps

The following figures are intended to make the present invention easier to understand, and the drawings are described in detail herein and form part of the specific embodiments. Through the specific embodiments herein and with reference to the corresponding drawings, the specific embodiments of the present invention are explained in detail, and the function principle of the creation is explained.

1 is a block diagram of the authoring system; FIG. 2 is a schematic flow chart of the authoring method; and FIG. 3A is a logical operation diagram of the output speed of the second control component being a low speed or an average speed; FIG. 3B The logic operation diagram of the output speed of the second control element is a high speed or an average speed.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

Figure 1 is a block diagram of the authoring system. As shown in the figure, the first fan 11 and the second fan 12 are connected to a control end 13 , and the second fan 12 is connected to a rotation speed monitoring end 14 . The control terminal 13 is connected to the first fan 11 and the second fan 12 respectively through at least one power line VCC, a ground line GND and a driving signal line PWM. The control terminal 13 supplies power to the first fan 11 through the power line VCC. And the second fan 12, and then the first fan 11 and the second fan 12 are driven to rotate by driving the signal line PWM.

The first fan 11 has a first control element 111, the second fan 12 has a second control element 121, and the first control element 111 of the first fan 11 is connected to the second control element 121 of the second fan 12. , wherein the connection means is connected, for example but not limited, by a UART (Universal Asynchronous Receiver/Transmitter) communication interface, when the first fan 11 and the The second fan 12 has a first rotation speed S1 and a second rotation speed S2. The first control system 111 of the first fan 11 receives the first rotation speed S1, and then transmits the first rotation speed S1 to the second fan 12. Second control element 121. The second control component 121 of the second fan 12 is connected to the rotational speed monitoring terminal 14 via a signal transmission line. The second control component 121 receives the second rotational speed S1 and receives the second control component 121 of the second fan 12 . The second speed S2. Furthermore, the second control element 121 that receives the first rotational speed S1 and the second rotational speed S2 is logically operated according to the two rotational speeds and then generates an output rotational speed to be transmitted to the rotational speed monitoring terminal 14.

In particular, the second control element 121 of the second fan 12 selects the output rotation speed according to the rotation speed of the first rotation speed S1 and the second rotation speed S2, and selects the output rotation speed according to the use requirement. The first rotational speed S1 or the second rotational speed S2. In addition, the second control element 121 may generate the output rotation speed according to the average rotation speed of the first rotation speed S1 and the second rotation speed S2.

Please continue to refer to Figure 2 for a schematic diagram of the flow of this creative method. As shown in the figure, referring to Fig. 1, the method of the creation includes the following steps:

Step SP1: driving a first fan and a second fan to rotate to generate a first rotation speed and a second rotation speed. As described above, the control terminal 13 supplies power to the first fan 11 and the second fan 12, and then outputs a driving signal to drive the first fan 11 and the second fan 12 to rotate. The rotating first fan 11 and the second fan 12 respectively have a first rotational speed S1 and a second rotational speed S2.

Step SP2: transmitting the first rotation speed of the first fan to the second fan. As described above, the first fan 11 has a first control element 111, the second fan 12 has a second control element 121, and the first control element 111 of the first fan 11 is connected to the second fan 12 Control element 121. The first control system 111 of the first fan 11 receives the first rotational speed S1 and then transmits the first rotational speed S1 to the second control element 121 of the second fan 12.

Step SP3: An output speed is generated by the second fan logic calculating the first rotation speed and the second rotation speed. As described above, the second control element 121 receives the second rotational speed S2 of the second control element 121 of the second fan 12 in addition to the first rotational speed S1, and then compares the second control element 121 of the second fan 12 The rotation speeds of the first rotation speed S1 and the second rotation speed S2 are high and low, and the output rotation speed is generated according to the high or low rotation speed, and the output rotation speed is transmitted to the rotation speed monitoring end 14. Furthermore, the second control element 121 of the second fan 12 may generate the output rotation speed according to the average rotation speed of the first rotation speed S1 and the second rotation speed S2, and transmit the output rotation speed to the rotation speed monitoring end 14.

The logical operation flow of the second control element 121 will be described in detail below.

FIG. 3A is a schematic diagram showing the logical operation of the output speed of the second control element 121 being a low rotation speed or an average rotation speed. After the second control element 121 receives the first rotation speed S1 and the second rotation speed S2, whether to perform the comparison of the rotation speed in step S201 is performed. If not, the average rotational speed of both the first rotational speed S1 and the second rotational speed S2 is output. If yes, the process proceeds to step S202a to compare whether the first rotation speed S1 is greater than or equal to the second rotation speed S2. If yes, the second control element 121 selects the output rotation speed as the second rotation speed S2; if not, the second control element 121 selects The output speed is the first speed S1.

In another embodiment, as shown in FIG. 3B, a logic operation diagram of the output speed of the second control element 121 is a high speed or an average speed. After the second control element 121 receives the first speed S1 and the second speed S2, the steps are performed. Whether the rotation speed is compared with S201, and if not, the average rotation speed of both the first rotation speed S1 and the second rotation speed S2 is output. If yes, the process proceeds to step S202b to compare whether the first rotation speed S1 is equal to or less than the second rotation speed S2. If yes, the second control element 121 selects the output rotation speed as the second rotation speed S2; if not, the second control element 121 selects The output speed is the first speed S1.

By the above arrangement and method, the first rotational speed S1 of the first fan 11 is transmitted to the second fan 12 instead of being transmitted to the rotational speed monitoring end 14, and then received by the second control system 121 of the second fan 12 to receive the first rotational speed. After S1 and the second rotation speed S2 are logically operated, the second control system 121 of the second fan 12 outputs the rotation speed to the rotation speed monitoring end 14, and the single-line output rotation speed makes it easier to monitor the operation states of the plurality of fans.

However, the above descriptions are only preferred embodiments of the present invention, and variations of the methods, shapes, structures, and devices described above are intended to be included in the scope of the present invention.

11‧‧‧First fan

111‧‧‧First control element

S1‧‧‧ first speed

12‧‧‧second fan

121‧‧‧Second control element

S2‧‧‧second speed

13‧‧‧Control terminal

14‧‧‧Speed monitoring terminal

VCC‧‧‧ power cord

GND‧‧‧ Grounding wire

PWM‧‧‧ drive signal line

Claims (6)

A multi-fan speed single-wire output system includes: a first fan having a first control element for receiving a first rotational speed of the first fan; and a second fan having a second control element for receiving the second fan a second speed; wherein the first control element of the first fan is coupled to the second control element of the second fan, and the first speed is transmitted to the second control element, the second control element is based on the first speed and The second rotational speed produces an output rotational speed. The multi-fan speed single-wire output system of claim 1, wherein the first fan and the second fan are connected to a control end. The multi-fan speed single-wire output system of claim 2, wherein the control terminal connects the first fan and the second fan through a power line and a ground line and a driving signal line. The multi-fan speed single-wire output system of claim 1, wherein the second control element of the second fan is connected to a speed monitoring end, and the output speed is transmitted to the speed monitoring end. The multi-fan speed single-wire output system according to claim 1, wherein the second control element selects the first rotation speed or the second rotation speed output according to the rotation speed of the first rotation speed and the second rotation speed. The multi-fan speed single-wire output system of claim 1, wherein the second control element generates the output rotational speed according to the first rotational speed and the average rotational speed of the second rotational speed.