Asia Vital Components Co., Ltd.

Quanta Computer Incorporated

Industrial Technology Research Institute

Po-Sheng Huang

Gwo-Chyuan Chen

Chun-Chieh Peng

Wen-Hung Tsai

I-Chi Chen

Chung-Hsien Yang

Chi-Jen Yu

Bo-Chun Hsu

Chih-Hsiang Chan

Chih-Hao Cheng

A fan brake circuit includes a control module, a motor driving module electrically connected to the control module and a motor, and a brake control module including an energy storage unit, a stored energy supply control unit electrically connected to the energy storage unit and an input power supply, and a brake unit electrically connected to the stored energy supply control unit and the motor. When the fan is power off, the stored energy supply control unit controls the energy storage unit to output an operating voltage to the brake unit, which then transmits a brake signal to the motor for braking the fan quickly (or immediately) at the time of power off. The brake action ends once the fan stopped, but the fan is still rotatable by airflows produced by another fan as a result of windmill effect to keep providing a certain degree of cooling effect.

Fan brake circuit

The present invention is a fan having rotation sensing, comprising a casing, a motor disposed within the casing, a rotation sensing unit, and a control unit, the rotation sensing unit detecting a first rotation of the casing and outputting a first sensing signal, the control unit having a controller electrically coupled to the rotation sensing unit and the motor, the controller receiving the first sensing signal according thereto to control the motor to perform a first operation mode. Through this design, an operation mode of the fan can be adjusted according to the rotation of the fan in the present invention.

Fan having rotation sensing

A fan control system includes multiple fans and a control unit. The control unit has a controller and a storage device. The storage device stores therein a first fan activation data. According to the first fan activation data, the control unit sequentially controls multiple output pins to output multiple output signals. Each fan storage device stores therein a second fan activation data identical to the first fan activation data. According to the corresponding output signal, the fan controller compares with the second fan activation data to find out the second fan activation data matching the output signal, then the fan controller outputs a drive signal to control and activate the fan to operate.

Fan control system

A 3D image labeling device and a 3D image labeling method are provided. The 3D image labeling device includes a point cloud cluster module, a projection module, an integration module and a point cloud recovery module. The point cloud cluster module clusters multiple points of a 3D unlabeled image as one or more first point clusters according to a 3D unlabeled image and a cluster algorithm to generate a 3D clustered image. The projection module generates a first 2D image with first objects according to the 3D clustered image, wherein each first point cluster corresponds to one of the first objects. The integration module labels the first objects of the first 2D image according to one or more object frames of a 2D labeled image to generate a second 2D image. The point cloud recovery module generates a 3D labeled image according to the second 2D image.

3D image labeling method based on labeling information of 2D image and 3D image labeling device

A computer is provided, including a keyboard, a pivot shaft, a supporting plate and a screen. The pivot shaft is movably disposed on the keyboard. The supporting plate is connected to the pivot shaft, and is rotatable relative to the keyboard, and includes a supporting plate pivot. The screen is connected to the supporting plate pivot to rotate relative to the supporting plate.

Computer

Wireless access point device

The present invention relates to a power-off brake circuit for a DC fan, which comprises a control unit, a motor driver unit, a switch unit, a power-off protection unit, and a brake unit and a brake unit. The control unit is coupled to the motor driver unit, the switch unit, the power-off protection unit. The brake unit is coupled to the motor driver unit and the power-off protection unit. By means of the circuit design of the present invention, the independent brake loop is used to achieve the effects of power-off brake and of the accurate control of rotating speed is improved.

Power-off brake circuit for DC fan

The present invention relates to a detection circuit for detecting coil abnormality of a DC fan motor, which is applied to a fan. The detection circuit comprises at least one detection unit and a processing unit. The detection unit is used to detect and receive the voltage signal at the center point of the coil set of the fan stator and perform a clamping process and a inverting process on the voltage signal to generate an inverted voltage signal such that the processing unit compares the inverted voltage signal with a predetermined value and determines to generate a notifying signal to a remote device. Thus, the effect of effective real-time monitoring the fan can be achieved.

Detection circuit for detecting coil abnormality of DC fan motor

Wireless router

In a pulse-width-modulation (PWM) direct current (DC) steady-state output circuit, there are included an electrode switch and a resistor-capacitor (RC) integrating filter. The electronic switch has a signal input end, via which a PWM signal is input, and a high-level end. The RC integrating filter includes at least one RC filtering unit and a first protection unit. There can be (1+n) order(s) of the RC filtering unit(s) with a first-order RC filtering unit connected to the electronic switch and the first protection unit and the RC filtering unit(s) at the rest order(s), if any, being sequentially connected to the first-order RC filtering unit one by one. When the electronic switch has signals input thereto, the RC integrating filter makes feedback compensation to enable output of a steady-state DC level.

Growing community of inventors

Taipei, Taiwan

Po-Sheng Huang