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Fan module testing system

A technology for testing systems and fan modules, applied in pump testing, liquid variable capacity machinery, pump control, etc., can solve problems such as the inability to finely adjust the fan speed and affect the accuracy of fan module testing, and achieve the goal of improving accuracy Effect

Inactive Publication Date: 2013-02-06
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional voltage-based speed control method cannot avoid the interference of the electrical characteristics of the original components, and at the same time cannot realize the fine adjustment of the fan speed, which greatly affects the test accuracy of the fan module

Method used

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Embodiment Construction

[0012] see figure 1 , the preferred embodiment of the present invention fan module test system includes a CPLD (Complex Programmable Logic Device, complex programmable logic device) 10, the CPLD 10 is externally connected with a first switch module SW1, a second switch module SW2, A crystal oscillator X1 for generating an external clock signal, an alarm light 40, a temperature sensing module 60 and a plurality of fans. The plurality of fans include a first fan 51 , a second fan 52 , a third fan 53 and a fourth fan 54 . The CPLD 10 includes an I2C (a serial communication bus) control module 20 and a PWM (Pulse Width Modulation, pulse width modulation) module 30 . The PWM module 30 is connected to the first fan 51 , the second fan 52 , the third fan 53 and the fourth fan 54 to output PWM signals to control the speeds of these fans. The I2C control module 20 includes a serial clock line SCL and a serial data line SDA, the serial clock line SCL and the serial data line SDA of th...

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Abstract

A fan module testing system is used for testing whether a plurality of fans mounted in a server can meet the requirement of heat radiation or not, and comprises a temperature sensing module and a CPLD (complex programmable logic device). The temperature sensing module is used for sensing internal temperature of the server. The CPLD comprises a PWM (pulse-width modulation) module connected with the fans, and the PWM module outputs PWM signals different in duty ratio to control rotation speed of the fans, and the CPLD is connected with the temperature sensing module so as to read the temperature information in the server. The fan module testing system controls rotation speed of the fans by means of the PWM signals, and accuracy of testing results can be improved.

Description

technical field [0001] The invention relates to a fan module test system. Background technique [0002] In a rack-mounted server system, installing a set of suitable fans is a prerequisite for the normal operation of the server system and energy saving. The traditional fan module testing method is to control the fan speed by adjusting the voltage, and at the same time sense the temperature in the server chassis in real time, so as to judge whether these fans can meet the heat dissipation requirements. However, the traditional voltage-based speed control method cannot avoid the original electrical characteristic interference, and at the same time cannot realize fine adjustment of the fan speed, which greatly affects the test accuracy of the fan module. Contents of the invention [0003] In view of the above, it is necessary to provide a fan module testing system with more accurate test results. [0004] A fan module testing system is used to test whether multiple fans ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B51/00F04D25/166F04D27/004H02P1/04Y02B30/70
Inventor 王康斌
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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