专用高速喷墨打印机喷头驱动电路的设计与实现

发布时间：2018-08-25 14:05

【摘要】：喷墨打印技术作为一种快速发展的高质量图像输出技术，在非接触打印技术领域占有重要的地位。围绕专用高速喷墨打印机的技术要求以及压电式喷头的技术特性，本文提出了一种新的喷头驱动控制电路设计方案。论文在对一种压电式喷头的结构，以及该喷头的控制信号与时序关系进行研究的基础上，给出了为支持可扩展性和可变区域数据快速更新，提出的一种新的喷头组织方式。论述了专用高速喷墨打印机的总体设计以及各功能模块的组成。在喷头驱动电路的硬件设计和实现中，采用RS422串行总线标准，，提高了数据传输的稳定性；提出了分时复用传输的数据传输方案，提高了传输电缆的利用率和可维护性，降低了系统成本。以Altera公司的Cylone系列FPGAEP1C6Q240C8、AD5424为核心芯片，实现四个喷头的高速打印控制时序，减小了体积并提高了硬件电路的可靠性。在FPGA内部逻辑实现中，采用自顶向下的设计方式。利用异步FIFO很好地解决了不同时钟域之间的分时数据传输问题。利用同一时钟构成的不同相差的基准信号和多个计数器设计实现了四个喷头的数据组织以及打印时序控制。为了达到喷头间色彩一致性，还实现了各个喷头的打印波形选择功能。软硬件调试结果表明：所设计的喷头驱动电路工作稳定，满足设计需求。
[Abstract]:Inkjet printing technology, as a rapid development of high quality image output technology, plays an important role in the field of non-contact printing technology. According to the technical requirements of the special high-speed inkjet printer and the technical characteristics of the piezoelectric sprinkler, a new design scheme of the drive and control circuit for the nozzle is presented in this paper. Based on the study of the structure of a piezoelectric nozzle and the relationship between the control signal and the timing of the nozzle, a new structure of the nozzle is proposed to support the scalability and rapid updating of variable region data. The general design of special high-speed inkjet printer and the composition of each function module are discussed. In the hardware design and implementation of the nozzle drive circuit, the RS422 serial bus standard is adopted to improve the stability of data transmission, and the data transmission scheme of time-sharing multiplexing is proposed to improve the utilization and maintainability of transmission cable. The system cost is reduced. With Cylone series FPGAEP1C6Q240C8,AD5424 of Altera company as the core chip, the high speed print control timing of four sprinklers is realized, which reduces the volume and improves the reliability of hardware circuit. In the implementation of FPGA internal logic, the top-down design method is adopted. Asynchronous FIFO is used to solve the problem of time-sharing data transmission between different clock domains. The data organization of four sprinklers and the control of printing timing are realized by using different difference reference signals and multiple counters made up of the same clock. In order to achieve color consistency between sprinklers, the function of selecting printing waveform of each nozzle is also realized. The results of hardware and software debugging show that the designed nozzle drive circuit works stably and meets the design requirements.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP334.8

【共引文献】