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OPTICAL WEIGHT MEASUREMENT SYSTEM

IP.com Disclosure Number: IPCOM000199449D
Publication Date: 2010-Sep-04
Document File: 7 page(s) / 51K

Publishing Venue

The IP.com Prior Art Database

Abstract

An optical weight measurement system is disclosed. The proposed system includes a sensing device, a detector, an emitter, and an acquisition unit, wherein each element is operatively coupled to with the other element. Once, a weight is applied on the sensing device, a dampening layer of the sensing device is compressed. The surface that contacts a light guiding layer changes and causes an optical attenuation corresponding to the applied weight. Such principle of changing in the optical attenuation is utilized for measuring a corresponding weight.

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RP13489

OPTICAL WEIGHT MEASUREMENT SYSTEM

BRIEF ABSTRACT

    An optical weight measurement system is disclosed. The proposed system includes a sensing device, a detector, an emitter, and an acquisition unit, wherein each element is operatively coupled to with the other element. Once, a weight is applied on the sensing device, a dampening layer of the sensing device is compressed. The surface that contacts a light guiding layer changes and causes an optical attenuation corresponding to the applied weight. Such principle of changing in the optical attenuation is utilized for measuring a corresponding weight.

KEYWORDS

    Optical, fiber optics, optical light piping sheets, total-internal-reflection, TIR, optical attenuation, guiding system, dampening floor layer, PV-cell or a standard photo detector, LED or laser

DETAILED DESCRIPTION

    In general, weight measuring is done in many ways such as, using the electronic balance, strain gauge systems and the like. Conventional weight measuring systems like electronic balance uses electromagnetic force which gets generated against the displacement of a sensor mechanism due to measuring load. The measuring load is measured on the basis of the electromagnetic force required for keeping the displacement zero. Further the strain gauge systems are also utilized for measuring applied forces and loads for weight

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RP13489

measurements. However, such measuring system exhibits poor reliability in dynamic loading applications such as "on board" weight scale systems for trucks, forklifts and other material handling equipment. Therefore conventional techniques primarily have limited usability and utilized in specific applications. Further, the conventional devices are bulkier, non-transportable, heavy weight and costlier during practical utility.

    Hence there is a need in the art for developing a weight measurement system that has increased usability and with wide applications.

    The present invention discloses an optical weight measurement system. Figure 1 illustrates a block diagram of an optical weight measurement system. The optical weight measurement system described herein uses the optical principles for measuring the weight. The system primarily includes a sensing device, a detector, an emitter, and an acquisition unit. The emitter can be made from a cost effective LED, laser, and /or the like. The detector consists of a PV- cell or a standard photo detector.

    The proposed optical weight measurement uses light guiding technology which is based on the principles of a total-internal-reflection (TIR). In a transparent material, the light radiation is reflected under a certain angle across the optical borders. If a material is attached at such optical borders, the material influences the TIR effects and as a result the optical attenuation of the light guiding system is enhanced. Such principle of changing in the optical attenuation in the light piping layer is used for measuring the weight.

    Figure 2 il...