公开(公告)号：USRE29839E

公开(公告)日：1978-11-21

申请号：US874520

申请日：1978-02-02

Applicant: Robert W. McLoughlin ,  Colin P. Nuttall

Inventor： Robert W. McLoughlin ,  Colin P. Nuttall

IPC: A24C5/34 ,  G01N21/952

CPC classification number: A24C5/3412 ,  G01N21/952

Abstract: The invention is concerned with an optical inspection apparatus for monitoring a continuously moving rod, such as a tobacco rod. The apparatus comprises a circular head through which the rod passes, a first set of fibre optic conductors the ends of which terminate at an inner peripheral surface of the head and which transmits light from a source to the head to illuminate the rod passing through the head, and a second set of fibre optic conductors the ends of which also terminate at an inner surface of the head to pick up light reflected from the rod passing through the head and transmit that light to a photosensitive element. The second set of conductors are divided into angularly spaced groups around the head and adjacent groups lead to separate photosensitive elements. Preferably the light picked up by diametrically opposite pairs of groups are combined.

公开(公告)号：US4011950A

公开(公告)日：1977-03-15

申请号：US614790

申请日：1975-09-19

Applicant: Robert W. McLoughlin ,  Colin P. Nuttall

Inventor： Robert W. McLoughlin ,  Colin P. Nuttall

IPC: A24C5/34 ,  A24C5/345 ,  A24C5/47 ,  G01B11/10 ,  B07C5/344

CPC classification number: A24C5/3412 ,  A24C5/345

Abstract: The invention relates to an apparatus for monitoring the assembly of filter tipped cigarettes. After assembly a succession of the cigarettes are advanced transversely to their length through an optical device in which at least two beams of light are transmitted across the plane of movement of the cigarettes between respective transmitters and photosensitive elements. Each beam is interrupted by each cigarette for a time depending upon the effective transverse dimension of the cigarette as seen by that beam and corresponding pulses from the photosensitive elements are summed and integrated. The output of the integrator is sampled to determine if its value lies within a predetermined range and a fault pulse for rejecting cigarette is produced if the value lies outside the predetermined range.

Abstract translation: 本发明涉及一种用于监测过滤嘴香烟组装的装置。 在组装之后，香烟的一连串通过光学装置横向于其长度前进，其中至少两束光在相应的发射器和感光元件之间的香烟的运动平面上传播。 根据该光束所看到的香烟的有效横向尺寸，每根香烟中断每一根香烟一段时间，并将来自感光元件的相应脉冲相加和积分。 对积分器的输出进行采样，以确定其值是否在预定范围内，如果该值在预定范围之外，则产生用于拒收香烟的故障脉冲。

公开(公告)号：US4208578A

公开(公告)日：1980-06-17

申请号：US870447

申请日：1978-01-18

Applicant: Robert W. McLoughlin ,  Colin P. Nuttall

Inventor： Robert W. McLoughlin ,  Colin P. Nuttall

IPC: A24C5/34 ,  G01N21/892 ,  G01N21/952 ,  G07C3/14 ,  H01J39/12

CPC classification number: G07C3/14 ,  A24C5/3412 ,  G01N21/952

Abstract: The invention relates to optical inspection apparatus for monitoring a continuously moving rod, the apparatus comprising a circular head through which the rod passes, a first set of fibre optic conductors which transmits light from a source to the head to illuminate the rod, and a second set of fibre optic conductors which pick up light reflected from the rod passing through the head and transmits the reflected light to a number of photoelectric elements. The second set of conductors are divided into angularly spaced groups around the head and adjacent groups lead to separate photoelectric elements. The outputs of the elements are fed via A.C. coupling means into separate channels connected to comparator means responsive to the noise signal level in the individual channels. The comparator means produces a fault pulse in the signal level in any one channel is greater than a preset allowable level. Each of the channels includes an amplifier for amplifying the noise signal, the level of the noise signal being fed back to control the amplifier gain so that the mean level of the amplified noise signal is maintained substantially constant.

Abstract translation: 本发明涉及一种用于监测连续移动的杆的光学检查装置，该装置包括一个通过该杆的圆形头部，第一组光纤导体，其将来自光源的光从头部传递到头部以照亮杆;以及第二组 一组光纤导体，其拾取从杆穿过头部反射的光并将反射光传输到多个光电元件。 第二组导体被分成围绕头部的角度间隔的组，相邻组导致分离的光电元件。 元件的输出通过交流耦合装置馈送到响应于各个通道中的噪声信号电平而连接到比较器装置的单独通道。 比较器装置在任何一个通道中产生的信号电平中的故障脉冲大于预设的允许电平。 每个通道包括用于放大噪声信号的放大器，反馈噪声信号的电平以控制放大器增益，使得放大的噪声信号的平均电平基本上保持不变。