公开(公告)号：US5500992A

公开(公告)日：1996-03-26

申请号：US407790

申请日：1995-03-20

Applicant: Thomas L. Barnes ,  James W. Colburn ,  Catherine L. Danial ,  William R. Jones, Jr. ,  Millard D. Longman

Inventor： Thomas L. Barnes ,  James W. Colburn ,  Catherine L. Danial ,  William R. Jones, Jr. ,  Millard D. Longman

IPC: G01N15/12 ,  B23P19/02

CPC classification number: G01N15/1218 ,  Y10T29/49945

Abstract: A method of making a count probe for counting particles comprises the following steps. A count wafer is formed along with a core member having an opening for accepting the count wafer. The count wafer is applied to the opening in the core member to form an interference fit between the count wafer and the core member. After application of the count wafer to the opening in the core member, the core member is annealed to relieve stress in the core member.

Abstract translation: 制备用于计数颗粒的计数探针的方法包括以下步骤。 计数晶片与具有用于接受计数晶片的开口的芯构件一起形成。 将计数晶片施加到芯构件中的开口以在计数晶片和芯构件之间形成干涉配合。 在将计数晶片应用于芯构件的开口之后，将芯构件退火以减轻芯构件中的应力。

公开(公告)号：US4009443A

公开(公告)日：1977-02-22

申请号：US564722

申请日：1975-04-03

Applicant: Wallace H. Coulter ,  Walter R. Hogg ,  Millard D. Longman, Jr. ,  Stephen Campbell ,  Edward Neal Doty

Inventor： Wallace H. Coulter ,  Walter R. Hogg ,  Millard D. Longman, Jr. ,  Stephen Campbell ,  Edward Neal Doty

IPC: G01N15/12 ,  H03K21/02 ,  H03K5/20 ,  G01N27/00

CPC classification number: H03K21/02 ,  G01N15/1227

Abstract: A method and apparatus for correcting a particle pulse count subject to coincidence error is disclosed wherein particle pulses, developed in response to passage of particles in a particulate system through a sensing zone, are counted for a predetermined period of time. The predetermined period of time is increased or extended in response to each pulse counted by a time increment that is related to a characteristic of the counted pulse, such as the pulse width, duration, or amplitude. The total additional time period allows the counting of additional particle pulses such that the total count at the end of the extended time period is an error corrected count for the number of particles detected in the predetermined time period.

Abstract translation: 公开了一种用于校正受到重合误差的粒子脉冲计数的方法和装置，其中响应于颗粒系统中的颗粒通过感测区域而产生的颗粒脉冲被计数预定时间段。 响应于与计数脉冲的特性（例如脉冲宽度，持续时间或幅度）相关的时间增量计数的每个脉冲，预定时间段被增加或延长。 总的附加时间段允许对附加粒子脉冲进行计数，使得延长时间段结束时的总计数是在预定时间段内检测到的粒子数目的误差校正计数。

公开(公告)号：US3936741A

公开(公告)日：1976-02-03

申请号：US485160

申请日：1974-07-02

Applicant: Wallace H. Coulter ,  Walter R. Hogg ,  Edward Neal Doty ,  Millard D. Longman ,  Stephen Campbell

Inventor： Wallace H. Coulter ,  Walter R. Hogg ,  Edward Neal Doty ,  Millard D. Longman ,  Stephen Campbell

IPC: G01N15/12 ,  H03K21/02 ,  G01N27/00 ,  H03K5/20

CPC classification number: H03K21/02 ,  G01N15/1227

Abstract: A method and apparatus for correcting a particle pulse count subject to coincidence error is disclosed wherein particle pulses, developed in response to passage of particles in a particulate system through a sensing zone, are counted for a predetermined period of time. The predetermined period of time is increased or extended in response to each pulse counted by a time increment that is a function of a characteristic of the counted pulse, such as the pulse width, duration, or amplitude. The total additional time period allows the counting of additional particle pulses such that the total count at the end of the extended time period is an error corrected count for the number of particles detected in the predetermined time period.

Abstract translation: 公开了一种用于校正受到重合误差的粒子脉冲计数的方法和装置，其中响应于颗粒系统中的颗粒通过感测区域而产生的颗粒脉冲被计数预定时间段。 响应于作为脉冲宽度，持续时间或幅度等计数脉冲的特性的函数的时间增量而计数的每个脉冲，预定时间段被增加或延长。 总的附加时间段允许对附加粒子脉冲进行计数，使得延长时间段结束时的总计数是在预定时间段内检测到的粒子数目的误差校正计数。

公开(公告)号：US4078211A

公开(公告)日：1978-03-07

申请号：US727959

申请日：1976-09-29

Applicant: Millard D. Longman, Jr.

Inventor： Millard D. Longman, Jr.

IPC: G01N15/12 ,  G01N27/00

CPC classification number: G01N15/1245 ,  G01N15/1227

Abstract: In multiple aperture electronic particle detecting apparatus, there are variations in the physical construction of the apertures intended to be identical, as a result of which the signals produced by the identical sized particle, if passed through all of the apertures, will not be identical. Each apparatus in which a multiple aperture arrangement is used requires many adjustments to be made in balancing the apparatus to compensate for the variations in the signals produced. A method and electronic circuit are disclosed which enable simplified balancing of the detecting means of the apparatus without the need for the many adjustments required heretofore. Particles of unknown size in suspension are passed through the apertures and the current supplied to all but one of the apertures is adjusted to render the signals produced of equal amplitude. The detecting means may be balanced by passing particles of a known suspension, which have a known size, through the apertures and adjusting the current supplied to all but one of the apertures to render the signals produced of equal amplitude. It is immaterial whether the particles are monosized or have a moderately broad size distribution.

Abstract translation: 在多孔电子粒子检测装置中，孔的物理结构的变化是相同的，其结果是，相同尺寸的颗粒产生的信号通过所有的孔将不相同。 其中使用多孔布置的每个装置需要在平衡装置时进行许多调整以补偿所产生的信号的变化。 公开了一种方法和电子电路，其能够简化装置的检测装置的平衡，而不需要迄今为止所需的许多调整。 悬浮液中未知尺寸的颗粒通过孔径，并且调节供应给除了一个孔之外的所有孔的电流，以使产生的幅度相等。 检测装置可以通过通过孔径传递具有已知尺寸的已知悬架的颗粒并调节供应到除了一个孔之外的所有孔的电流以使得产生的幅度相等的信号被平衡。 粒子是单一化还是中等宽度分布是无关紧要的。