公开(公告)号：US11566629B2

公开(公告)日：2023-01-31

申请号：US16751070

申请日：2020-01-23

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia Chang Hsu ,  Chih Feng Huang ,  Wei Shu Hsu

IPC: F04D27/00 ,  G01P3/44

Abstract: A device for real-time self-diagnosis of a fan and a method are disclosed for detecting whether a fan body encounters an environment abnormal situation. The fan body includes a motor, a fan and a tachometer. The fan body further includes a microcontroller for receiving a speed signal of the tachometer and calculating a speed value of the fan, and detecting a current value of the motor during operation. The microcontroller can control the motor to drive the fan according to a monitoring period and a control signal transmitted from the control board, and can calculate a speed change amount according to the monitoring period, and can calculate a current change amount. When the speed change amount exceeds a speed change threshold and the current change amount exceeds a current change threshold for a period of time, the microcontroller generates an environmental anomaly signal.

公开(公告)号：US11221605B2

公开(公告)日：2022-01-11

申请号：US16796072

申请日：2020-02-20

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia Chang Hsu ,  Chih Feng Huang ,  Ching-Te Chen ,  Ren-Yuan Yu

IPC: G05B19/042 ,  F04D25/08 ,  G05D13/62

Abstract: An intelligent fan control system with interface compatibility is provided. The intelligent fan control system can identify and control fans one-to-one connected to fan slots, and each fan slot includes four pins. The intelligent fan control system includes a bus; an I2C signal switching unit including SDA outputs one-to-one connected to third pin of the fan slots via the bus; an I2C signal switching unit including SCL outputs one-to-one connected to fourth pins of the fan slots via the bus; voltage control units one-to-one corresponding to the fan slots, and having output terminals one-to-one connected to second pins of the fan slots; connection line sets, and each connection line set including four connection lines and connected to the corresponding fan slot; a control board comprising port sets, and can control and switch the I2C signal switching unit to the fan slots in sequence, to transmit the corresponding I2C signal.

公开(公告)号：US11118591B2

公开(公告)日：2021-09-14

申请号：US16796116

申请日：2020-02-20

Applicant: PROLIFIC TECHNOLOGY INC.

Inventor： Chia Chang Hsu ,  Chih Feng Huang ,  Ching Te Chen ,  Ren Yuan Yu

IPC: F04D25/06 ,  F04D27/00 ,  F04D19/00

Abstract: An intelligent fan with interface compatibility is provided. The intelligent fan includes a fan body having a fan and a motor, a driving circuit, a tachometer, an output connector including a first pin, a second pin, a third pin and a fourth pin connected to a fan connector of a motherboard, and a microcontroller connected to the driving circuit and the tachometer, and connected to the motherboard via the first, second, third and fourth pins. When the intelligent fan is powered on, the microcontroller sets the third and fourth pins as input pins for receiving an output signal of the fan connector of the motherboard, and the microcontroller performs an I2C signal analysis on the output signal. When the I2C signal analysis succeeds, the intelligent fan is set in an I2C mode, and when the I2C signal analysis fails, the intelligent fan is set in a PWM mode.