Invention Grant
US08279428B2 Scale with corner load sensor and method for measuring tilts resulting from corner loads
有权
用拐角载荷传感器和用于测量由角载荷产生的倾斜的方法
- Patent Title: Scale with corner load sensor and method for measuring tilts resulting from corner loads
- Patent Title (中): 用拐角载荷传感器和用于测量由角载荷产生的倾斜的方法
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Application No.: US12766320Application Date: 2010-04-23
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Publication No.: US08279428B2Publication Date: 2012-10-02
- Inventor: Jochen Doerner , Christian Schrader , Ralf Mueller
- Applicant: Jochen Doerner , Christian Schrader , Ralf Mueller
- Applicant Address: DE Goettingen
- Assignee: Sartorius Weighing Technology GmbH
- Current Assignee: Sartorius Weighing Technology GmbH
- Current Assignee Address: DE Goettingen
- Agency: Sughrue Mion, PLLC
- Priority: DE102009002599 20090423
- Main IPC: G01B3/26
- IPC: G01B3/26

Abstract:
A weighing scale, e.g. a top-pan scale, having a scale pan (01, 02) supported on a force transducer, and a corner load sensor (03, 04, 06, 08, 09) measuring the tilting of the scale pan (01, 02) relative to the force transducer. The corner load sensor includes a light beam source (03, 04, 06) emitting a first light beam and a second light beam. The first light beam and the second light beam are directed toward a reflecting surface on an underside of an arrangement that includes the scale pan (01, 02). The first light beam and the second light beam are respectively inclined relative to the reflecting surface of the untilted scale pan (01). The corner load sensor (03, 04, 06, 08, 09) of the scale also includes a first optical sensor (08) measuring the first light beam reflected by the reflecting surface. If no corner load exists, a predetermined proportion (12) of the reflected first light beam is directed to the first optical sensor (08). If the scale pan (02) is tilted, the proportions of the reflected light beams which fall on the two optical sensors (08, 09) change. The corner load sensor (03, 04, 06, 08, 09) has an evaluating unit determining the tilt of the scale pan (01, 02) dependent on the light quantities measured with the two optical sensors (08, 09).
Public/Granted literature
- US20100271624A1 SCALE WITH CORNER LOAD SENSOR AND METHOD FOR MEASURING TILTS RESULTING FROM CORNER LOADS Public/Granted day:2010-10-28
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