Alarmed fan module of temperature-control industrial personal computer

Abstract

The invention discloses an alarmed fan module of a temperature-control industrial personal computer (IPC). A single-chip A / D (analog-to-digital) converter, and a pulse width modulator (PWM) and a single-chip selector based on C programming language are arranged in a single-chip; the control module of the single-chip comprises a test circuit composed of thermistors and the single-chip A / D converter, a control circuit composed of the PWM and a chassis fan, and an alarm circuit composed of the single-chip selector, an LED (light-emitting diode) and a buzzer; a 74HC151 chip-selection integrated chip is arranged in the single-chip selector; and the single-chip is a 8-bit single-chip. Since the functional circuits are integrated by the single-chip, and most functions are achieved by the C programming language in the single-chip, the invention has the advantages of simple circuit design, low cost and good performance; and the invention provides an alarm device, thereby better solving the problem that faults occurring to the cooling fan cannot be found in a timely manner and providing reliable guarantee for the safe operation of the IPC.

Description

Technical field:

[0001] The invention relates to a temperature control industrial computer fan module with an alarm. Background technique:

[0002] At present, the heat dissipation method commonly used for industrial control computers in industrial sites is to install high-power fans to accelerate air flow and dissipate heat from computer heat sources. Due to the harsh high-temperature environment that may occur on site, good industrial computers use multiple fans for heat dissipation to ensure that the equipment can work normally in harsh environments. The current connection method between the industrial computer and the fan determines that these fans generally start to run at high speed when the host computer is started, and will not stop until it is turned off.

[0003] The fan is connected to the fan controller. The previous fan controller has no fan fault alarm function, and can only control one or two fans. The control circuit design is complicated, there are many fau...

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