Locating system to determine the position of movable bodies with respect to a reference

US4095179A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Wolfgang Bremer · Ettlingen, DE
• Frieder Heintz · Blankenloch, DE
• Ulrich Flaig
• Uwe Kiencke · Ludwigsburg, DE
• Wolfram Glauert

Key dates

• Filing date: Aug 13, 1975
• Grant date: Jun 13, 1978
• Expiry date: Aug 13, 1995

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K17/97
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The movable body is supplied with at least two marker elements to move therewith, the reference being at a fixed location at which a stationary transducer is located responsive to the marker elements and to provide output signals staggered in time as the marker elements pass by the transducer, so that the marker elements in combination with the transducer form a pulse source. The individual marker elements are different to provide pulses having respectively different characteristics, which pulses are conducted to threshold stages which, in turn, are connected to a logic circuit to evaluate and logically combine the respectively different pulses from the pulse source. Different pairs of marker elements, for example associated with different pistons of a multi-cylinder internal combustion engine can be characterized by additional marker elements providing additional pulses which, in combination with one marker element, can characterize a certain number representative, for example, of a cylinder.