With the development of signal sensing and signal processing in the ISP and network technology, the device of measurement and control system is developing for the direction of automation, digitalization, flexibility and intelligence, The every trade all led into the high-tech products, more and more modern machines replaced the handicraft works, lowering the strength of the work and the dangerous degree of work, so now a main lesson need to be solved is controlling, that is to say , how we pass brief importation that can control modern machines more efficient and more valid, So, the most modernize industry machine control, basic input device —— keyboard, and the manifestation equipments of the keyboard integral whole, this both of solid hour, come to a decision time limited efficacy and functions of the control by the root. This lesson a keyboard for investigative is basing on DSP with show of connect an electric circuit.
Keyboard is scale that appropriation equipments inside that a matrix being constituted by switch, is an important input device, in small scaled and tiny machine system, such as the single plank computer, take the microprocessor, the keyboard is small scaled, can adopt to connect a people's method in brief and practically, complete the importation function of keyboard with the controlling of the software. As to computer, the keyboard is the most in common use and the most multifarious input device , the user usually passes directly the keyboard operation to make deal with computer. The keyboard control of the computer is a kind of software control.
Lessons based on DSP keyboard with show of connect people's electric circuit, apply to control in the modern machine, compare to the modernization control ,for example ,the PID regulates control, microcomputer control, single slip computer control, programmable PLC control etc, will be more time limited efficacy, solid, even have more development potential. The DSP that high price ratio also will be a modernization to consume an electronics equipments product is core by the favor most a piece.
The intelligence manifestation controlling system based on DSP andHD729A making full use of TMS320VC5410 highly vivid with circulate speed, make the system accuracy of the data collect higher, speed quicker, work more valid; the intelligence manifestation control electric circuit HD7279A takes up the little resources, but the control function is strong, price low, make single slip computer tedious importation and manifestations system in a machine very simple, shortened the period of development consumedly, have got the extensive and applied foreground.
Keyword: Digital Signal Processing、DSP、TMS320C5410、Keyboard and Show、Interface