Control system for fan
A technology for controlling systems and fans, applied to instruments, electrical digital data processing, digital data processing components, etc., can solve problems such as malfunction, fan failure, and instability of the entire system
Active Publication Date: 2014-06-04
SUNONWEALTH ELECTRIC MACHINE IND
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Problems solved by technology
Because the existing control system 10 only has a single microcontroller 11, when the microcontroller 11 is abnormal, it will not be able to provide the pulse width modulation signal to the fan cooling group 12, causing all the fans in the fan cooling group 12 to fail. Running for heat dissipation, the heat dissipation of the entire system is insufficient, which may cause instability or malfunction of the entire system
Method used
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Embodiment Construction
[0022] refer to figure 2 , which shows a schematic circuit block diagram of the fan control system of the present invention. The fan control system 20 of the present invention includes: a first microcontroller 21 , a second microcontroller 22 and a first logic circuit 23 . The first microcontroller 21 is used for providing at least one first control signal to the first logic circuit 23 . In this embodiment, the first control signal is a first pulse width modulation signal.
[0023] The second microcontroller 22 is connected to the first microcontroller 21 to detect the use status of the first microcontroller 21, and the second microcontroller provides at least one second control signal to the first logic circuit twenty three. The first logic circuit 23 receives the first control signal and the second control signal, and performs logic operations to generate at least one driving signal for at least one fan. In this embodiment, the fans are a cooling fan group 30, and the c...
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The invention relates to a control system for a fan. The control system comprises a first microcontroller, a second microcontroller and a first logic circuit, wherein the first microcontroller is used for providing at least one first control signal; the second microcontroller is connected with the first microcontroller and is used for detecting the active state of the first microcontroller, and the second microcontroller provides at least one second control signal; and the first logic circuit is used for receiving the first control signal and the second control signal and carrying out logic operation so as to generate at least one driving signal to the fan. In the invention, the two microcontrollers are used in the control system for the fan, when one microcontroller is abnormal, the other microcontroller can ensure the fan to continue operating through the first logic circuit, and thus, the problem of insufficient heat dissipation due to fan inoperativeness caused by the abnormality of the single microcontroller in the traditional control system is solved.
Description
technical field [0001] The present invention relates to a control system, in particular, to a control system for a fan. Background technique [0002] refer to figure 1 , which shows a circuit block diagram of an existing control system for a fan. The conventional control system 10 includes a microcontroller 11 for providing a pulse width modulation (PWM) signal to a fan cooling group 12, and the fan cooling group 12 has a plurality of fans for cooling. Because the existing control system 10 only has a single microcontroller 11, when the microcontroller 11 is abnormal, it will not be able to provide the pulse width modulation signal to the fan cooling group 12, causing all the fans in the fan cooling group 12 to fail. Running to dissipate heat, so that the heat dissipation of the entire system is insufficient, which may cause instability or malfunction of the entire system. [0003] Therefore, it is necessary to provide an innovative and progressive fan control system to s...
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IPC IPC(8): G06F1/20
Inventor 洪银树陈佳宏郑宗根
Owner SUNONWEALTH ELECTRIC MACHINE IND