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    • 5. 发明授权
    • Method of analog/digital conversion
    • 模拟/数字转换方法
    • US4989005A
    • 1991-01-29
    • US244552
    • 1988-09-12
    • Yoshihiro WakiyamaYoshiro Ohnishi
    • Yoshihiro WakiyamaYoshiro Ohnishi
    • G01R19/04H03M1/00H03M1/54
    • H03M1/0602H03K5/1532H03M1/54
    • An analog/digital converter includes a peak holding circuit for holding a peak voltage of input analog data and a peak time detecting circuit for detecting a point of time when the input analog data reaches a peak voltage. Also included is a constant current discharging circuit for discharging the peak voltage held in the peak holding circuit at a constant current from the peak point of time detected by the peak time detecting circuit. The converter also includes a zero time detecting circuit for detecting a zero point of time when a voltage held in the peak holding circuit is reduced to zero and a time to digital converting circuit for counting a number of pulses in a pulse line obtained by gating clock pulses during a period of time from the peak time detected by the peak detecting circuit to the zero time detected by the zero time detecting circuit, the time to digital converting including a counter to output digital data corresponding to the input analog data. A positive offset analog voltage is added to the input analog data and a digital compensator compensates the digital data obtained by the time to digital converting circuit by providing a negative offset digital value approximately corresponding to the positive offset analog voltage, more correctly, equal to a number of pulses in a pulse line passing through a clock gate of the time-to-digital converting circuit for a period of time during which the input analog data has a value equal to zero.
    • 模拟/数字转换器包括用于保持输入模拟数据的峰值电压的峰值保持电路和用于检测输入模拟数据达到峰值电压的时间点的峰值时间检测电路。 还包括一个恒定电流放电电路,用于从峰值时间检测电路检测到的峰值时间点以恒定电流放电保持在峰值保持电路中的峰值电压。 该转换器还包括一个零时间检测电路,用于在保持在峰值保持电路中的电压降至零时检测零点时间;以及时间到数字转换电路,用于对通过选通时钟获得的脉冲线中的脉冲数进行计数 在从由峰值检测电路检测到的峰值时间到由零时间检测电路检测到的零时间的时间段内的脉冲,包括计数器的数字转换时间对应于输入的模拟数据的输出数字数据。 正偏移模拟电压被添加到输入模拟数据,数字补偿器通过提供大致对应于正偏移模拟电压的负偏移数字值来补偿由数字转换电路获得的数字数据,更正确地等于a 通过时间数字转换电路的时钟门的脉冲线中的脉冲数,其中输入模拟数据具有等于零的时间段。
    • 8. 发明授权
    • Electrostatic spray device
    • 静电喷涂装置
    • US07712687B2
    • 2010-05-11
    • US09759552
    • 2001-01-12
    • David Edward WilsonBryan Michael KadlubowskiJeffrey Keith LepplaWataru HiroseYoshihiro WakiyamaTakeshi AoyamaTakeshi MoriToru Sumiyoshi
    • David Edward WilsonBryan Michael KadlubowskiJeffrey Keith LepplaWataru HiroseYoshihiro WakiyamaTakeshi AoyamaTakeshi MoriToru Sumiyoshi
    • B05B5/00
    • B05B5/1691B05B5/10
    • An electrostatic spray device that maintains a consistent charge-to-mass ratio in order to maintain a consistent target spray quality is disclosed. During steady state conditions, the high voltage power supply adjusts the output voltage level in response to changing environmental and/or operating conditions. During transient conditions such as start-up, shut-down and changing flow rate conditions, the high voltage power supply ensures that the charge-to-mass ratio is maintained. During, start-up, for example, the high voltage power supply charges the high voltage electrode to a predetermined voltage level before the product is delivered to the charging location. During shut-down, the product delivery is stopped before the high voltage power supply shuts off power to the high voltage electrode, and during changes in product flow rate, the voltage level of the high voltage electrode is adjusted to maintain a consistent charge-to-mass ratio. The present invention also prevents afterspray by discharging the stored charge remaining in storage elements of the high voltage power supply.
    • 公开了一种保持一致的电荷质量比以便保持一致的目标喷雾质量的静电喷涂装置。 在稳态条件下,高压电源根据不断变化的环境和/或工作条件调整输出电压电平。 在诸如启动,关闭和流量条件变化的瞬态条件下,高压电源确保了电荷质量比得以保持。 例如,在启动期间,高压电源在产品被传送到充电位置之前将高电压电极充电到预定的电压电平。 在停机期间,在高压电源关闭高压电极的电源之前,产品交付停止,并且在产品流量变化期间,调节​​高压电极的电压电平以保持一致的电荷 - 比例 本发明还通过放电剩余在高压电源的存储元件中的储存电荷来防止喷射。