公开(公告)号：WO2003104756A2

公开(公告)日：2003-12-18

申请号：PCT/US2003/017801

申请日：2003-06-06

Applicant: PITNEY BOWES INC.

Inventor： KASMIN, Michael, J. ,  SALAZAR, Edilberto, I.

IPC: G01G

CPC classification number: G01G19/005 ,  G07B17/00362 ,  G07B17/00661 ,  G07B2017/0037 ,  G07B2017/00701

Abstract: A system and method for weighing of items such as mailpieces in the presence of external vibration such as ground noise. The system includes a scale system having a platform connected to a load cell, which provides an output signal to an analog-to-digital converter. The resulting digital output signal is processed by a low pass filter and analyzed by a microprocessor to determine weights of items on the platform. The microprocessor also determines postage amounts as functions of the weights and outputs these postage amounts to a postage meter. The microprocessor determines the weights as the median of the peak to valley difference of the digital output signal when the digital output signal peak to valley difference is less than a predetermined value. The microprocessor identifies peaks and valleys of the digital output signal by determining when the derivative of the signal changes sign. The microprocessor estimates the weight as an average of a sum of medians for N preceding cycles if the digital output signal does not converge.

Abstract translation: 在诸如地面噪声等外部振动的情况下称量邮件等物品的系统和方法。 该系统包括具有连接到称重传感器的平台的标度系统，其向模数转换器提供输出信号。 所得到的数字输出信号由低通滤波器处理并由微处理器分析以确定平台上的物品的重量。 微处理器还将邮资数量确定为权重的函数，并将这些邮资数量输出到邮资计费器。 当数字输出信号峰谷差小于预定值时，微处理器将权重确定为数字输出信号的峰谷差的中值。 微处理器通过确定信号的导数何时改变符号来识别数字输出信号的峰值和谷值。 如果数字输出信号不会收敛，则微处理器将重量估计为N个前一周期中的中值的平均值。

公开(公告)号：WO2003105091A1

公开(公告)日：2003-12-18

申请号：PCT/US2003/017971

申请日：2003-06-06

Applicant: PITNEY BOWES INC.

Inventor： SALAZAR, Edilberto, I. ,  KASMIN, Michael, J.

IPC: G07B17/00

CPC classification number: G01G19/005 ,  G07B17/00362 ,  G07B17/00661 ,  G07B2017/0037 ,  G07B2017/00701

Abstract: A system (10) and method for fast weighing of items such as mailpieces. The system (10) includes a scale system (12) having a platform (22) connected to a load cell (20) that provides an output signal to an analog-to-digital converter (24). The resulting digital output signal is processed by a low pass filter (26) and analyzed by a microprocessor (30) to determine weights of items on the platform (22). The microprocessor (30) also determines postage amounts of items on the platform (22). The microprocessor (30) also determines postage amounts as functions of the weights and outputs these postage amounts to a postage meter (16). The microprocessor (30) determines the weights as the median of the peak to valley difference of the digital output signal when the digital output signal peak to valley difference is less than a predetermined value. The microprocessor (30) identifies peaks and valleys of the digital output signal by determining when the derivative of the signal changes sign. The microprocessor (30) uses the determined first peak value to determine if the weight is below the first weight break point. The microprocessor (30) also estimates the weight as an average of a sum of medians for N preceding cycles if the digital output signal does not converge. The postage meter (16) initially assumes that all mailpieces have a minimum postage amount due and corrects the postage amount when a weight signal is received from the microprocessor (30) so as to take advantage of the fact that the majority of mailpieces requirê only a minimum postage amount.

Abstract translation: 一种用于快速称量邮件等物品的系统（10）和方法。 系统（10）包括具有连接到负载传感器（20）的平台（22）的比例系统（12），其向模数转换器（24）提供输出信号。 所得到的数字输出信号由低通滤波器（26）处理并由微处理器（30）分析，以确定平台（22）上的物品的权重。 微处理器（30）还确定平台（22）上的物品的邮资量。 微处理器（30）还将邮资量确定为权重的函数，并将这些邮资量输出到邮资计费器（16）。 当数字输出信号峰谷差小于预定值时，微处理器（30）将权重确定为数字输出信号的峰谷差的中值。 微处理器（30）通过确定信号的导数何时改变符号来识别数字输出信号的峰值和谷值。 微处理器（30）使用确定的第一峰值来确定重量是否低于第一重量中断点。 如果数字输出信号不收敛，则微处理器（30）还将重量估计为N个前一周期的中值之和的平均值。 邮资计费器（16）最初假设所有邮件具有最小的邮资金额，并且当从微处理器（30）接收到权重信号时修正邮资量，以利用大多数邮件仅需要一个 最低邮资金额