| This paper studies a kind of new autocontrol system across-the-board, which can realize both the measurement of frequency and the separation of quartz crystal wafer. The system is controlled by a computer which the singlechip is connected with basing on ISA bus interface, and consists of wafer measurement and separation. The frequency measurement system adopts pi-network most transmission method to measure the electrical parameters of the quartz crystals, such as the frequency, the energy and clutter, moreover, it applies direct digital synthesizer(DDS) to produce the wishing frequency scanning signal and stimulate π network, so as to get the resonate frequency, autoeciousness frequency, activity and so on; The separation system choose circle and line motor, step motor, and electromagnet to realize auto-sorting of the wafers.Automatic measureing and sorting system of quartz crystal wafer is the combination of the advanced control technology, modern micro-electronics technology and the computer application, which riches the content of measuring and selecting technology at a large scale, what's more, it uses a lot of innovative technics and methods in the circuit designment and software workout, endowing the whole system with many merits, for instance,good stabilization, high precision and rapidity, good repetition. The main control page with good-looking, self-contained function and easy operation is a obvious characteristic of the system.The paper not only elaborate the measuring system and the key techonogy and methods, but also introduce the separating driving system design. At last, it particularly tells the system frame, software programme and communication realization. The article adopts the method of theory combining practice to analysis the precision of the system. |
