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Multishaft motion control card based on RS-232 serial bus

A RS-232 and serial bus technology, applied in the field of multi-axis motion control cards, can solve the problems of unsatisfactory board cards, high cost, and poor acceleration and deceleration performance, and achieve low cost, high flexibility, and connection The effect of low pin count

Inactive Publication Date: 2005-01-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now there is a common problem in the open CNC system with "NC embedded in PC" structure, that is, the motion control card of the open architecture
For example, in the occasions where stepping motors are used, most of them use motion control cards produced by a certain company in Taiwan. However, in actual development, it is found that many boards cannot meet the requirements of users, and the performance of acceleration and deceleration is not very good. And the cost is higher

Method used

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  • Multishaft motion control card based on RS-232 serial bus
  • Multishaft motion control card based on RS-232 serial bus
  • Multishaft motion control card based on RS-232 serial bus

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Embodiment Construction

[0015] like figure 1 As shown, the present invention includes a control unit 1, a switch input unit 2 and a signal output unit 3; wherein:

[0016] 1) Control unit 1: It includes RS-232 communication interface 1.1, quartz crystal multivibrator, and power monitoring circuit; one end of RS-232 communication interface 1.1 is connected to the single-chip CPU through a serial bus, and the other end is connected to the upper PC. The pulse signal generated by the crystal multivibrator is connected to the programmable counter / timer 8254, and the power monitoring circuit is connected to the single-chip CPU through the bus;

[0017] 2) Switch input unit 2: It includes a switch acquisition module, a switch signal isolation and shaping module; the switch acquisition module collects external X, Y, Z zero return, limit switch, and tool setting signal quantities through limit switches and photoelectric switches , the switch signal isolation and shaping module realizes the level conversion b...

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PUM

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Abstract

The control card consists of control unit, switching value input unit and signal output unit. The control unit includes RS-232, quartz multivibrator, circuit for monitoring power supply; switching value input unit includes acquisition module and isolation shaping module; signal output unit includes current signal output unit and direction signal output unit. 8254 programmable chip is adopted in pulse control circuit for counting and timer. X5045 is utilized in EEPROM chip. Features of the card are: simple hardware structure, few number of pins, and no need of driving program.

Description

Technical field [0001] The invention relates to a wired transmission system, in particular to a multi-axis motion control card based on RS-232 serial bus. Background technique [0002] With the development of the manufacturing industry, the trend of small and medium-sized batch production is increasing, which puts forward higher requirements for the flexibility and versatility of CNC machine tools. It is hoped that the market can provide different processing needs, and build a user-oriented control system quickly, efficiently and at low cost. , and greatly reduce the cost of maintenance and training. At the same time, the new generation of CNC system is required to have convenient network functions to adapt to the task-oriented and order-oriented production organization and management mode of the future workshop. For this reason, in the past 10 years, with the rapid development of computer technology, various open CNC systems of different levels have emerged and developed ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/18G05B19/416
Inventor 邬义杰冷洪滨
Owner ZHEJIANG UNIV
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