Abstract: A fan waterproof structure includes a frame body and a stator assembly to configure as two individual components. The frame body has a base seat and a circumferential wall. Multiple first support members horizontally extend from the base seat to connect with the circumferential wall. The stator assembly is disposed on the base seat and has an electrical wire. A waterproof plastic layer is disposed on the stator assembly to enclose the stator assembly. A second support member horizontally extends from the waterproof plastic layer to connect with the circumferential wall. The electrical wire is disposed in the second support member to achieve good waterproof effect.

Abstract: A fan signal wireless transmission system includes a system board, a first wireless signal transceiver module and at least one fan having a second wireless signal transceiver module. The first wireless signal transceiver module and the fan are mounted on the system board and connected to a power terminal and a ground terminal of the system board to obtain required power supply. The system board generates a wireless control signal that is wirelessly transmitted via the first wireless signal transceiver module to the fan, and wirelessly receives via the first wireless signal transceiver module a piece of fan information fed back by the fan to the system board. And, the fan wirelessly receives the wireless control signal and wirelessly outputs the fan information via the second wireless signal transceiver module.

Abstract: A fan operating control system includes a magnetic sensor unit, a control unit, a rectifier unit and a coil unit. The control unit is electrically connected to the magnetic sensor unit and the rectifier unit; the rectifier unit is further electrically connected to a ground; and the coil unit is electrically connected to the control unit and the ground. The control unit detects any fan electric current flowing through the coil unit and generates a rotating speed signal accordingly. When no fan electric current is detected at the coil unit, the control unit stops generating the rotating speed signal. Therefore, it is able to avoid a whole fan system from making an error decision and outputting rotating speed signal continuously when there is not fan electric current flowing through the coil unit, and any abnormal condition that would adversely affect the fan service life can be avoided, too.

Abstract: The present invention is a device for monitoring a lifetime of fan bearings, which is applied to a fan, comprising a base, at least one sensing unit, a processing unit, and a control plate. The base has a bearing sleeve receiving bearings. The sensing unit is selectively disposed on the bearing sleeve or on the bearing. The processing unit generates an informing signal based on comparison of a received temperature sensed signal generated by the sensing unit sensing the bearing temperature and an internal predetermined temperature value. By means of the device design of the present invention, the effects of effectively monitoring the bearings and predicting the remaining lifetime can be achieved.

Abstract: A fan active noise self-lowering system includes a fan, a push assembly, at least one pickup unit and a digital signal processing unit. The pickup unit serves to capture the noise made by the fan to generate a noise input signal and transmit the noise input signal to the digital signal processing unit. The digital signal processing unit receives the noise input signal and processes the noise input signal to output a control signal for controlling the push winding assembly to operate so as to push the fan impeller of the fan to move up and down. Accordingly, the fan impeller will generate a reverse sonic wave to offset the noise.

Abstract: A fan active noise self-lowering system includes a fan, a push assembly, at least one pickup unit and a digital signal processing unit. The pickup unit serves to capture the noise made by the fan to generate a noise input signal and transmit the noise input signal to the digital signal processing unit. The digital signal processing unit receives the noise input signal and processes the noise input signal to output a control signal for controlling the push winding assembly to operate so as to push the fan impeller of the fan to move up and down. Accordingly, the fan impeller will generate a reverse sonic wave to offset the noise.

Abstract: A synchronizing method of fan rotational speed includes steps of: using a first Hall sensor to detect pulse period width generated by the rotational speed of the first fan and converting the pulse period width into a first pulse signal and transmitting the first pulse signal to a microprocessor; using a second Hall sensor to detect pulse period width generated by the rotational speed of the second fan and converting the pulse period width into a second pulse signal and transmitting the second pulse signal to the microprocessor; using the microprocessor to compare the first and second pulse signals corresponding to the pulse period widths of the rotational speeds of the first and second fans; and the microprocessor generating a pulse modulation signal to the second fan so as to control the rotational speed of the second fan to be equal to the rotational speed of the first fan.

Abstract: A fan operating control system includes a magnetic sensor unit, a control unit, a rectifier unit and a coil unit. The control unit is electrically connected to the magnetic sensor unit and the rectifier unit; the rectifier unit is further electrically connected to a ground; and the coil unit is electrically connected to the control unit and the ground. The control unit detects any fan electric current flowing through the coil unit and generates a rotating speed signal accordingly. When no fan electric current is detected at the coil unit, the control unit stops generating the rotating speed signal. Therefore, it is able to avoid a whole fan system from making an error decision and outputting rotating speed signal continuously when there is not fan electric current flowing through the coil unit, and any abnormal condition that would adversely affect the fan service life can be avoided, too.

Abstract: A temperature controlling system for a LED module includes at least one LED unit, at least one fan, at least one temperature sensor and a controlling device. The controlling device generates a driving signal for controlling the rotating speed of the fan based on a temperature detection signal transmitted from the temperature sensor, so that the fan can generate a compulsive airflow for dissipating the heat generated by the LED unit. According to the present invention, the working temperatures of the respective LED units can be kept the same, and a uniform heat-dissipating effect can be achieved.

Abstract: A temperature controlling system for a LED module includes at least one LED unit, at least one fan, at least one temperature sensor and a controlling device. The controlling device generates a driving signal for controlling the rotating speed of the fan based on a temperature detection signal transmitted from the temperature sensor, so that the fan can generate a compulsive airflow for dissipating the heat generated by the LED unit. According to the present invention, the working temperatures of the respective LED units can be kept the same, and a uniform heat-dissipating effect can be achieved.