The use of temperature sensor in the computer

With the rapid development of computer information technology, from desktop computers to touch tablets, are able to realize intelligent induction, sensors in the big bang is capability, so what is the role the temperature sensor?

sensor is a kind of testing device, can feel the measured information, and can detect feel the information, will change according to certain rule become electrical signal output, or other form of information needed to satisfy the information transmission, processing, storage, display, record and control requirements. The computer of the sensor is monitoring the status of each part, and the information for the corresponding processing, control corresponding components for automation control, to enhance the role of computer 'intelligence'.

why laptop fan automatic control of motor speed, when we test laptop temperature state, why you can see the temperature of each part, in fact, the reason is very simple, because all major components in the notebook, such as motherboard, processor, video card, hard disk, even temperature sensors are installed.

laptop now rely on win min resistance or win min diode to detect temperature of different parts, the two kinds of semiconductor devices will change with the change of temperature and voltage, after dealing with the chip, can show the all parts, the actual temperature and control the laptop fan speed.

if you want to see a look at the temperature sensor in the latest laptop looks like, it's not easy, after all, the outer resistance cannot directly detect internal temperature of the parts, and prone to poor contact problem. Therefore, only under the old motherboard CPU socket 'see everybody'. Notebook now already in various parts of temperature sensor chip, such as the processor, graphics chips inside, hard disk, through software according to the actual temperature.

the place on put together is narrated, the laptop's built-in temperature sensors to detect the sea the computer actual operation temperature. Laptop internal space is narrow, such as CPU, video card, hard disk as the important source of heat, so the hard disk of calorific value as small as possible. We will your hard disk drivers in pcmarkvantage subprojects cycle test for more than 2 hours, we finally through a computer performance test software records temperature trends: the test mainly reflects the hard disk in the actual temperature of the runtime, test equipment for laptops with temperature sensor.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor