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Based on monolithic integrated circuit's data acquisition system 1. Monolithic integrated circuit synopsis The monolithic integrated circuit is refers to an integration on a chip complete computer system. Although his majority of function integration on a small chip, but it has the majority of parts which a complete computer needs: CPU, the memory, the internal and the external bus system, will be majority at present will also have the external memory. Simultaneously integrates such as the communication connection, the timer, auxiliary equipments and so on real-time clock. But the present most formidable monolithic integrated circuit system even may the sound, the image, the network, the complex input-output system integration on a chip.34564
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2. Sensor
Along with science's and technology's rapid development, the non-physical quantity's test and the control technology, more and more widely has applied in areas of technology and so on astronautics, aviation, transportation, metallurgy, machine manufacture, petrochemical, light industry, engineering supervision and test, moreover gradually is also introducing in people's daily life. It can be said that the test technology and the automatic control level's height, is weighs a national science and technology modernization degree the important symbol. The sensor technology is realizes the test and the automatic control important link, in the test system, is taken a measuring appliance localization, its chief feature is can transmit and examine some shape accurately the information, and transforms it Cheng Ling a shape the information. To be specific the sensor is refers to these to measure that the object some determination's information has the feeling (or response) with picks out the function, and causes it to transform according to certain rule with it correspondence may the output signal primary device or the installment. If does not have the sensor to the primary information which measured to carry on the accurate reliable capture and the transformation, all accurate tests and the control will be unable to realize, even if modernization's electronic accounting machine, does not have the accurate information (or transformation reliable data), not distorted input, also will be unable to play its proper role fully.论文网
3. Data acquisition
Data acquisition (DAQ), is refers to from simulations and the digit and so on sensor and other testing equipment was measured that in the unit picks the non-electrical quantity or the electric quantity signal automatically, delivers in the superior machine to carry on the analysis processing. The data acquisition system is the union realizes, the user nimbly based on the computer or other special-purpose test platform survey software and hardware product from the definition measurement system. Is gathered the data was transformed into electrical signal each kind of physical quantity, like the temperature, the water level, the wind speed, the pressure and so on, may simulate the quantity, may also be the digital quantity. Gathering is the sample mode generally, namely separates certain time (to call sampling period) to identical data redundancy gathering. The gathering data mostly is a spurt value, also, but in a some period of time characteristic value. The accurate data gauging is the data acquisition foundation. The data gauging method has the contact type and the non-contact type, the detecting element are many and varied. No matter which method and the part, by don't affect were measured that the object condition and the survey environment are premises, guarantees the data the accuracy. The data acquisition meaning is very broad, the package holds the opposite shape continual physical quantity gathering. In the computer auxiliary charting, the mapping, the design, may also be called the data acquisition to the graph or the image digitization process, what this time is gathered is the geometry quantity (or includes physical quantity, like gradation) data.
Data acquisition's goal is for physical phenomena and so on measurement voltage, electric current, temperature, pressure or sound. Based on the PC data acquisition, through the modular hardware, the application software and computer's union, carries on the survey. Although the data acquisition system basis different application demand has the different definition, but each system gathering, analysis and displayed information goal actually same. Data acquisition system conformity signal, sensor, actuator, signal recuperation, data acquisition equipment and application software.