Multiple sensor system

• US 7,092,842 B2
• Filed: 09/16/2004
• Issued: 08/15/2006
• Est. Priority Date: 09/19/2003
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Inoue, Yuichi, Iida, Yusuke, Hosoda, Toru, Ishikawa, Nobuharu
• Primary Examiner(s): Barlow, John
• Assistant Examiner(s): Kundu, Sujoy
• Application Number:
  US10/942,083
• Publication Number:
  US 20050110000A1
• Time in Patent Office: 698 Days
• Field of Search: 702/155
• US Class Current: 702/155
• CPC Class Codes: G01B 11/14 for measuring distance or clearance between spaced objects or spaced apertures G01B11/26 takes precedence; rangefinders G01C3/00
• CPC Class Codes: G01B 11/245 using a plurality of fixed, simultaneously operating transducers G01B11/2408 - G01B11/2425, G01B11/255 take precedence
• CPC Class Codes: G01S 17/48 Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves

Abstract

An extension unit provided adjacent to an amp unit comprises a measurement data accumulation memory, a measurement data acquiring part for acquiring measurement data coming through a transmission line and accumulating it in the above memory, a data analyzing part for analyzing an accumulated series of measurement data according to predetermined algorithm, a determining part for determining a data analyzed result, and an output part for outputting a control signal corresponding to a determined result to the outside. A plurality of process programs in which measurement algorithm is segmentalized are incorporated in the extension unit and a process program is selected according to a command from a personal computer and the selected process program is performed in a predetermined order.

Claims

1. A displacement sensor comprising a measurement value acquisition unit for acquiring a displacement measurement value, a measurement value processing unit for processing the displacement measurement value acquired by the measurement acquisition unit, and a process result output unit for outputting a result provided in the measurement value processing unit, wherein

the measurement value processing unit processes at least three process categories including at least waveform shaping which removes noise from the acquired displacement measurement values to form a shaped waveform, characteristic point extraction which extracts a characteristic point from the shaped waveform, and calculation which performs a predetermined calculation based on the extracted characteristic point, in sequence, and

each process category can select one or more process programs from a plurality of sectionalized process programs and a process algorithm is determined by designating an execution sequence of selected process programs.

2. A displacement sensor according to claim 1, wherein the measurement value processing unit processes each process category of trigger control, waveform shaping, characteristic point extraction, calculation, determination and external setting output in sequence.

3. A displacement sensor according to claim 1, wherein the measurement value processing unit comprises:

a storing part for storing one or more process programs in which a measurement algorithm is sectionalized, together with identification information of the process program and execution address of the process program by measurement stage in which execution sequence is predetermined;

an input part for inputting the identification information and the execution sequence of the process program to be executed by measurement stage;

a table creating part for creating a measurement process table comprising the execution sequence input by the input part and the execution address read from the storing part; and

a measurement stage based program executing part for reading and executing the one or more process programs by measurement stage, based on the measurement process table.