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    • 3. 发明公开
    • A signal processing system for an article counter
    • 信号处理的一个对象计数器的方法。
    • EP0174818A2
    • 1986-03-19
    • EP85306372.5
    • 1985-09-09
    • DEERE & COMPANY
    • Friend, Kenneth Dale
    • G06M1/10A01C7/00G06M7/00
    • G06M1/101A01C7/105G01V8/20G06M7/00
    • A linear array of light emitting diodes (CR1-CR7) direct a diffuse beam of radiation across the path of seeds dropping down a seed chute and onto two detectors (46,48) connected in parallel, so that every seed produces a substantially equal area pulse in the output signal from the photo detectors. The signal is amplified (50) and applied to an analog to digital converter (52) producing digital samples at a high rate for processing by a microprocessor (54). The sensor value is subtracted from an offset value corresponding to the sensor signal when no seed is present and the difference signal is repeatedly added to an area signal. The offset value is adjusted from time to time to prevent the difference signal staying persistently negative or persistently positive. Whenever the area signal reaches a threshold value the passage of a seed is indicated and the area signal is decremented by an estimated area value corresponding to one seed. This estimated area value is adjusted from time to time so as to avoid long term drift in the area value, thereby maintaining the estimated area value accurately representative.
    • 5. 发明公开
    • A signal processing system for an article counter
    • 一种用于文章计数器的信号处理系统用于文章计数器的信号处理系统
    • EP0174818A3
    • 1988-01-13
    • EP85306372
    • 1985-09-09
    • DEERE & COMPANY
    • Friend, Kenneth Dale
    • G06M01/10A01C07/00G06M07/00G01V09/04
    • G06M1/101A01C7/105G01V8/20G06M7/00
    • A linear array of light emitting diodes (CR1-CR7) direct a diffuse beam of radiation across the path of seeds dropping down a seed chute and onto two detectors (46,48) connected in parallel, so that every seed produces a substantially equal area pulse in the output signal from the photo detectors. The signal is amplified (50) and applied to an analog to digital converter (52) producing digital samples at a high rate for processing by a microprocessor (54). The sensor value is subtracted from an offset value corresponding to the sensor signal when no seed is present and the difference signal is repeatedly added to an area signal. The offset value is adjusted from time to time to prevent the difference signal staying persistently negative or persistently positive. Whenever the area signal reaches a threshold value the passage of a seed is indicated and the area signal is decremented by an estimated area value corresponding to one seed. This estimated area value is adjusted from time to time so as to avoid long term drift in the area value, thereby maintaining the estimated area value accurately representative.
    • 7. 发明公开
    • A signal processing system for an article counter
    • Verfahren zur SignalverarbeitungfüreinenGegenstandszähler。
    • EP0380186A2
    • 1990-08-01
    • EP90200576.8
    • 1985-09-09
    • DEERE & COMPANY
    • Friend, Kenneth Dale
    • G06M1/10G06M7/00A01C7/00G01V8/12
    • G06M1/101A01C7/105G01V8/20G06M7/00
    • A linear array of light emitting diodes (CR1-CR7) direct a diffuse beam of radiation across the path of seeds dropping down a seed chute and onto two detectors (46, 48) connected in parallel, so that every seed produces a substantially equal area pulse in the output signal from the photo detectors. The signal is amplified (50) and applied to an analog to digital converter (52) producing digital samples at a high rate for processing by a microprocessor (54). The sensor value is subtracted from an offset value corresponding to the sensor signal when no seed is present and the difference signal is repeatedly added to an area signal. The offset value is adjusted from time to time to prevent the difference signal staying persistently negative or persistently positive. Whenever the area signal reaches a threshold value the passage of a seed is indicated and the area signal is decremented by an estimated, area value corresponding to one seed. This estimated area value is adjusted from time to time so as to avoid long term drift in the area value, thereby maintaining the estimated area value accurately representative.
    • 发光二极管(CR1-CR7)的线性阵列引导漫射射束穿过种子溜槽下落的种子路径并且连接到并联连接的两个检测器(46,48)上,使得每个种子产生大致相等的面积 来自光电检测器的输出信号脉冲。 信号被放大(50)并且被施加到模数转换器(52),以高速率产生数字样本以由微处理器(54)处理。 当没有种子存在时,从对应于传感器信号的偏移值中减去传感器值,并且将差信号重复地添加到区域信号。 不时调整偏移值,以防止差分信号持续持续为负或持续为正。 每当区域信号达到阈值时,指示种子的通过,并且区域信号减少对应于一个种子的估计的面积值。 不时调整该估计面积值,以避免面积值的长期漂移,从而保持估计面积值的准确代表性。
    • 9. 发明公开
    • Article or seed counter
    • ZählerfürGegenständeoder Saatgut。
    • EP0175530A2
    • 1986-03-26
    • EP85306373.3
    • 1985-09-09
    • DEERE & COMPANY
    • Friend, Kenneth DaleDharia, Vijay Manilal
    • G06M1/10A01C7/00G06M7/00
    • G06M1/101A01C7/105G01V8/20G06M7/00
    • Seeds falling down a chute pass between two spaced windows (38, 40) and two spaced mirrors (34, 36) facing each other across the width of the chute. A linear array of seven radiation emitters (CR1-CR7) direct a beam of radiation across the seed path through a slit aperture in the window (38). The beam passes through a slit aperture in the window (40) to a pair of radiation detectors (46, 48) connected in parallel and providing a signal representing the amount of radiation falling thereon. Because of the number of emitters (CR 1-CR7) in the linear array, the beam of radiation is diffuse and non-collimated so that no seed can be in the shadow of another and the integrated reduction in radiation falling on the detectors (46, 48) accurately represents the number of seeds passing through.
    • 种子在两个间隔开的窗口(38,40)和两个间隔开的反射镜(34,36)之间沿斜槽的宽度彼此相对地滑倒。 七个辐射发射器(CR1-CR7)的线性阵列通过窗口(38)中的狭缝孔引导穿过种子路径的辐射束。 光束通过窗口(40)中的狭缝孔径到并联连接的一对辐射检测器(46,48),并提供表示落在其上的辐射量的信号。 由于线性阵列中的发射极数量(CR1-CR7),辐射束是漫反射和非准直的,因此没有种子可以在另一个的阴影中,并且放射在检测器(46, 48)准确地表示通过的种子的数量。