This paper presents embedded processor based automatic temperature control of VLSI chips, using temperature sensor LM35 and ARM processor LPC2378. Due to the very high packing density, VLSI chips get heated very soon and if not cooled properly, the performance is very much affected. In the present work, the sensor which is kept very near proximity to the IC will sense the temperature and the speed of the fan arranged near to the IC is controlled based on the PWM signal generated by the ARM processor. A buzzer is also provided with the hardware, to indicate either the failure of the fan or overheating of the IC. The entire process is achieved by developing a suitable embedded C program.

Keywords: Temperature sensor, ARM processor, VLSI chips, Brushless DC motor

本文介紹了基于嵌入式處理器的VLSI芯片的溫度自動控制，同時利用溫度傳感器LM35和ARM處理器LPC2378來完成設(shè)計。由于VLSI芯片密度非常高，同時芯片在工作時很快得到加熱，如果不能研制出能是它快速冷卻的方法，芯片的性能將會受到很大影響。在目前的工作中，將傳感器放置在非常接近接近到IC集成電路的位置來采集芯片的溫度，通過由ARM處理器產(chǎn)生的PWM信號來控制集成電路旁風(fēng)扇的轉(zhuǎn)速。在硬件電路中也提供了一個蜂鳴器，在無法控制風(fēng)扇或者IC集成電路的過熱的情況下都會發(fā)出警報。整個過程的實現(xiàn)需要制定一個合適的嵌入式C程序。

關(guān)鍵詞：溫度傳感器，ARM處理器，超大規(guī)模集成電路芯片，無刷直流電動機(jī)