Multi-axis motion control card based on optical fiber communication
A multi-axis motion and control card technology, applied in the field of numerical control, can solve the problem of insufficient anti-interference ability, and achieve the effect of strong anti-interference ability, small quantity and high system reliability
Inactive Publication Date: 2012-04-04
WUHAN XINTONG KECHUANG TECH DEV
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[0003] The application number is 200410017112.4, the publication number is CN1564095A, the invention patent application and application number is 200910050444.5, and the publication number is CN 101546185A, and the name is "based on IEEE-1394 The patent application for multi-axis motion control card of serial bus adopts the "PC + motion control card" structure based on computer standard bus, but its anti-interference ability is not obvious enough in the case of strong electromagnetic wave interference
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[0018] Such as figure 1 As shown, a multi-axis motion control card based on optical fiber communication, including a control unit, a signal input unit and a signal output unit, is characterized in that,
[0019] The control unit includes an optical transceiver, an upper computer PC and a single-chip CPU, one end of an optical transceiver is connected with the single-chip CPU by a serial bus, and the other end is connected with the upper computer PC by an optical fiber;
[0020] The signal input unit includes an A / D conversion circuit and a first optocoupler, the A / D conversion circuit is electrically connected to the first optocoupler, and the first optocoupler is electrically connected to the single-chip CPU;
[0021] The signal output unit includes three pulse signal output circuits, a voltage / current signal output circuit and a positive and negative signal output circuit;
[0022] The pulse signal output circuit includes a second optocoupler and a programmable count / timer,...
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The invention discloses a multi-axis motion control card based on optical fiber communication, which comprises a control unit, a signal input unit and a signal output unit; the control unit comprises a light transceiver, an upper machine PC and a single chip CPU; the data input unit comprises an A / D conversion circuit and a photoelectric coupler; and the data output unit comprises three pulse signal output units, a voltage / current signal output unit and a positive direction signal output unit. The optical fiber is used as a physical transmission medium, and the light transceiver is used as a device for mutual conversion between a short-distance electric signal and a long-distance light signal, so the multi-axis motion control card has high anti-jamming capability; the single chip and the programmable counter / timer are used, so the multi-axis motion control card has the characteristics of few external devices, simple hardware structure, high flexibility and the like; a serial bus mode is used in the bus design, so the multi-axis motion control card has the characteristics of few connection pins, simple connection, low cost and high system reliability.
Description
technical field [0001] The invention relates to the technical field of numerical control, in particular to a multi-axis motion control card based on optical fiber communication. Background technique [0002] In the field of numerical control technology, the motion control card is the core component of digital manufacturing. With the rapid development of the manufacturing industry, the trend of small and medium 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, quickly, efficiently and cost-effectively build user-oriented control. System, and greatly reduce the cost of maintenance and training, but also requires a new generation of CNC systems with convenient network functions, open architecture of the CNC system has become the development direction of today's CNC technology. The multi-axis motion control card based on optical fibe...
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Inventor 石晓龙陈智华陈秀峰
Owner WUHAN XINTONG KECHUANG TECH DEV