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Based on DSP generator motive system simulator design and development
Wednesday, June 10th, 2009 at 05:08 | No commentsCategories: DSPShort Content: Abstract: Introduced take the DSP monolithic integrated circuit as the control core's synchronous generator motive system simulator's principle, the hardware constitution and the software design, and has given the scene static state and the dynamic test result. The test result indicated that this simulation system can realize well to prototype electric motor various characteristic simulation. Key word: DSP; Discretization processing; Motive system; Dynamic characteristic 0 introductions The motive system (including its velocity modulation system) affects an electrical ... -
Based on DSP isolated word speech recognition system’s design
Wednesday, June 3rd, 2009 at 13:08 | No commentsCategories: DSPShort Content: Abstract: This article proposed based on the TMS320VC5402 speech recognition system plan. The overall system as the core electric circuit carries on the design take TMS320VC5402, carries on A/D by TLC320AD50C to transform, by the TMS320VC5402 recognition voice signal, then and the robot correspondence, and controls the LCD demonstration recognition result by AT89S52. Key word: DSP; A/d conversion; Monolithic integrated circuit; Isolated word; Speech recognition 1 introduction Develops unceasingly along with the voice signal processing technology and ... -
Based on monolithic integrated circuit CPLD multi-channel precise timing control system design
Wednesday, May 27th, 2009 at 04:12 | No commentsCategories: SCMShort Content: 1 introduction In the modern control system the controlled member possibly is complex, scattered, moreover often is parallel, the independent working, but in the whole they are the incident cross-correlation organic combinations. Therefore, control signal's sequential logic requests to be more precise. The CPLD monolithic integrated circuit has provided the technical support for the control system, is composed the multi-computer system by CPLD and the monolithic integrated circuit to have the logical control to be convenient, the succession is precise, ... -
AT89C2051 bidirectional temperature supervisory system’s design
Wednesday, May 27th, 2009 at 03:32 | No commentsCategories: SCMShort Content: 1 introduction Certain application situation needs to monitor the temperature, the request temperature maintains based on this. For example the crops hotbed grows seedlings in 20℃~30℃, domesticated fowl hatching in 37℃~40℃, mold mushroom spawn cultivation in 23℃~28℃. But the ordinary unidirectional excess temperature warning satisfies with difficulty requests, therefore, proposed that one kind controls the warm system design plan using the temperature sensor and the monolithic integrated circuit application system's bidirectional excess temperature. This system design can demonstrate the ultra ... -
Based on embedded component AT89C51SNDlC electronic treatment meter design
Wednesday, May 27th, 2009 at 03:05 | No commentsCategories: SCMShort Content: 1 introduction At present uses two electricity pole piece symmetrical cover treatment human body spot the electronic treatment meter, has the function through the electrode piece on pulsating voltage and the treatment human body spot resistance, produces the human body in the treatment spot to be able the sensation pulsating current, the stimulation nerve muscle, causes its contraction and the diastole, has the movement effect, serves the treatment purpose. But in the present market this type treatment meter produces pulsating ... -
Power line carrier communication colony type security alarm system
Wednesday, May 27th, 2009 at 02:52 | No commentsCategories: SCMShort Content: Introduction The power line carrier communication is takes the channel by the existing low pressure electric power wire, through the carrier transmission simulation or digital signal's technology, has does not need the extra wiring, the cost to be low, characteristics and so on use maintenance convenience, had some companies to promote the power line Moclem chip, like ST7536, LMl893, SCll28, PL2000 and so on, in long-distance informationization, street light illumination monitoring, intellectualized plot automatically domains and so on copy ... -
Based on monolithic integrated circuit and vehicles detector’s vehicle type parsing technique research
Wednesday, May 27th, 2009 at 02:12 | No commentsCategories: SCMShort Content: 1 introduction In science and technology swift development's today, the monolithic integrated circuit also changes with each new day, rapidly expand. At present, he not only has the extremely widespread application in the industry, moreover seeped generally to national economy each department, is playing the vital role specially in the transport facilities. In present and present's transportation system, the vehicles detector "the informer" causes the traffic engineering experts by its traffic control to take seriously, the vehicles detector may provides ... -
The direct-current numerical control current supply’s design with realizes - en.51rd.net
Wednesday, May 27th, 2009 at 01:46 | No commentsCategories: SCMShort Content: The direct-current current supply takes regulated supply's branch, has the important use value in the engineering technology and the survey domain, it involves the application by the stable electromagnetic field, adjusts expansions and so on ampere meter to domains and so on laser, superconductivity, Communications Today and sensing technology. Based on analogous circuit's current supply, although may realize the high accuracy, the width current range output, but its structure is complex, the adjustment difficulty, instructs not intuitively. Along with the ... -
Jumps the code technology password generator design based on KEELOQ
Wednesday, May 27th, 2009 at 01:19 | No commentsCategories: SCMShort Content: Introduction Based on the password access control system application in is now very universal, but the people provide to it the security rating overestimates frequently. The correspondence transmission speed and the system computing power's enhancement causes the system comes under the malicious attack or "the password scanning" the risk to increase. When uses the unsafe transfer method, possibly has the password the phenomenon which steals. For example the model through the telephone line modem connection, this use fixed password's ... -
One kind based on DDS peak-to-peak value adjustable signal generating device design
Wednesday, May 27th, 2009 at 01:05 | No commentsCategories: SCMShort Content: l introduction Supply oscillator generator widespread application teaching experiment and scientific research project. Direct digital frequency synthesis technology (DDS) has the frequency resolution to be high, the cut speed is quick, the output signal phase, may output the random profile signal continuously, to be able to realize merits and so on entire digital automation control, causes its to become system supply oscillator and so on radar, correspondence, engineering design first choices. In domains and so on wide frequency and frequency-hopping ...
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