Midastek Microelectronics Inc.

Chung-Ping Tan

Ming-Hung Tsai

Wei-Tien Chen

A multi-fan system and a driving method for the multi-fan system are provided. The multi-fan system includes a control source circuit and multiple electronic devices. The control source circuit includes a driving signal output terminal. The control source circuit outputs a device driving signal string through the driving signal output terminal. The device driving signal string includes multiple device driving signals with different identification codes. Each of the electronic devices includes a driving signal input terminal, a fan, a light emitting element group, and a controller. The controller receives a corresponding device driving signal in the device driving signal string through the driving signal input terminal. The corresponding device driving signal has a corresponding identification code corresponding to a corresponding electronic device. The controller controls an operation of at least one of the fan and the light emitting element group based on the corresponding device driving signal.

Multi-fan system and driving method thereof

A driving device and a driving-program updating method are provided. The driving device includes a signal converter, a storage circuit, a controller, a driver, and a detection circuit. The signal converter receives a first signal and converts the first signal into a second signal. The storage circuit stores a driving program. The controller provides a control signal in response to the second signal and the driving program. The driver drives a fan unit in response to the control signal. The detection circuit detects whether the first signal includes a program update command. When the first signal includes the program update command, the detection circuit updates the driving program stored in the storage circuit based on the program update command.

Driving device and driving-program updating method for fan

A fan system and a monitoring method are provided. The fan system includes a fan device and a controller. The fan device includes a fan unit, a detector, and a memory. The detector detects an operating state of the fan unit during operation to obtain operating raw data corresponding to the operating state. The memory records the operating raw data and stores a data protocol. The controller provides a monitoring request to allow the memory to provide the operating raw data and a data protocol to the controller, converts the operating raw data into operating state data through the data protocol, and provides an early warning notification signal according to the operating state data. When the operating raw data is provided to the controller, the operating raw data stored in the memory is erased.

Fan system and monitoring method for fan system

A motor control method is provided. The method includes: receiving a plurality of voltage control signals from a rotation speed controller to output a plurality of PWM signals; receiving the plurality of PWM signals to output three phase currents, so that a motor rotates; sensing three phase current values of the three phase currents; directly calculating a real rotor angle of the motor according to two of the three phase current values; and adjusting the plurality of the outputted voltage control signals according to an expected rotor speed and the calculated real rotor angle, so as to make the real rotor speed of the motor reach the expected rotor speed.

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Taipei, Taiwan

Chung-Ping Tan