Optical fiber semi-absolute-value encoder

Abstract

The invention provides an optical fiber semi-absolute-value encoder which solves the problem that liquid levels inside various oil product storage tanks for petrochemical engineering are more difficult to measure, and particularly safe and accurate measurement is difficult to perform. The optical fiber semi-absolute-value encoder comprises a casing, an optical code transducing mechanism and an optical code data processing module, and is characterized in that the optical code transducing mechanism and the optical code data processing module are connected together through optical fibers, the optical fiber transducing mechanism comprises an increment type optical code mechanism and an absolute value optical code mechanism which are mounted in the casing, and the increment type optical code mechanism is connected with the absolute value optical code mechanism together through a gear set. The optical fiber semi-absolute-value encoder has the advantages that an absolute value code can automatically correct increment type optical code data; origin data can be recovered when power is gained after power loss, so that recovery data with the absolute value attribute are achieved, and the operation stability and the convenience of the overall measurement mechanism are improved; therefore, the safety measurement without the requirement of manual on-site measurement is achieved.

Description

technical field [0001] The invention relates to the field of linear measurement of liquid level and material level, specifically an optical fiber semi-absolute value that automatically restores measurement readings after power failure and performs linear measurement of liquid level and material level of flammable, explosive and toxic items Encoder. Background technique [0002] Various oil storage tanks in petrochemical industry, condensing liquid pressure vessels, various chemical raw materials, reagent storage tanks, and various flammable gas containers; It is difficult, especially for safe and accurate measurement. Although the accuracy of the measurement and control photoelectric encoders currently used can be guaranteed, due to the characteristics of photoelectric encoders, there are still unsafe factors of "ignition", which brings extremely high risks to the measurement. exist. Even the method of manual on-site measurement also has human insecurity and large errors i...

AI Technical Summary

Problems solved by technology

[0002] Various oil storage tanks in petrochemical industry, condensing liquid pressure vessels, various chemical raw materials, reagent storage tanks, and various flammable gas containers; It is difficult, especially for safe and accurate measurement. Although the accuracy of the measurement and control photoelectric encoders currently used can be guaranteed, due to the characteristics of photoelectric encoders, there are still unsafe factors of "ignition", which brings extremely high risks to the measurement. exist

Even the method of manual on-site measurement has human insecurity and large errors in data accuracy

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