Fan control system and method aiming at fan control signal state

Abstract

The invention discloses a fan control system and method aiming at a fan control signal state and belongs to the technical field of server heat dissipation. The fan control system aiming at the fan control signal state is composed of a first node, a second node, a comparator, a trigger and a fan. The first node and the second node are connected with the comparator, and fan control signal recognition algorithms are added to control programs in the first node and the second node respectively. The fan is connected with the comparator, the first node and the second node, and two adjacent fan control signal pins on fan terminal pins are connected. The trigger is connected with the first node, the second node and the fan. According to the fan control system aiming at the fan control signal state, after a backboard comparator breaks down, fan control can still be achieved, the problem of complete machine heat dissipation caused by component faults is avoided, therefore, normal work of a server is guaranteed, and high application and popularization value is achieved.

Description

technical field [0001] The present invention relates to the technical field of server heat dissipation, and specifically provides a fan control system and method for fan control signal states. Background technique [0002] Compared with traditional computers, servers have better scalability, ease of use, and ease of management, and are widely used by large enterprises. There are multiple nodes in the four-star server. Generally, two nodes jointly control the corresponding system fans in front. In order to avoid heat dissipation problems in the server, the PWM signals sent by the two nodes need to select the maximum value for fan control. This function is realized through the backplane comparator. Output the maximum value of the PWM signal to control the system fan. For four-star servers, the backplane comparator is prone to failure during transportation due to factors such as welding and vibration. This failure is difficult to find during production, and usually occurs afte...

AI Technical Summary

Problems solved by technology

For four-star servers, the backplane comparator is prone to failure during transportation due to factors such as welding and vibration. This failure is difficult to find during production, and usually occurs after a long period of use at the customer site

In practical applications, when the comparator fails, the initial output PWM signal is completely low, and the system fan will work at the lowest speed state, resulting in cooling failures such as CPU frequency reduction when the four-star server is used at the customer site, which will seriously Affect customer business and affect product image

The server node can obtain the fan speed of the system. When it is judged that the fan speed is abnormal, it can send a full-speed signal command. However, because the fan PWM signal can only be output through the comparator, the full-speed command cannot reach the fan, and the fan will continue to maintain a low speed state, which cannot meet the requirements of the system. Cooling requirements, the normal operation of the server cannot be guaranteed, and further improvement is needed

Images