Self-synchronizing barcode displacement sensor and measurement method thereof

Abstract

The invention discloses a novel absolute type self-synchronizing barcode displacement sensor and a measurement method thereof. The novel absolute type self-synchronizing barcode displacement sensor comprises a ruler belt with a particular one-dimensional barcode, and a reading box with a reading unit positioned towards the particular one-dimensional barcode. The reading box and the ruler belt move relative to each other, so that the information of an absolute position is measured through the code reading of the absolute position information. A code reading sensor expresses a code containing the absolute position information in the form of a particular one-dimensional barcode based on the intelligent image processing technology and the stripe difference principle. Meanwhile, the particular one-dimensional barcode is read by the reading box, so that the displacement and the absolute position value of an object can be measured accurately. The measuring range of the sensor is almost not limited at all. The ruler belt is a flexible belt and can be installed along a straight-line track or a curve track. No contact friction is generated during the relative movement process, and the reading gap is self-adaptive. The coding length is almost unlimited. Therefore, the sensor can be widely applied to the fields of water conservancy, hydropower, industrial and mining enterprises, traffic and transportation, green and environmental protection, military equipment and the like.

Description

technical field [0001] The invention relates to a novel absolute self-synchronizing barcode displacement sensor and its measuring method, belonging to the non-contact displacement sensor and its novel measuring method in the technical field of instruments and meters. Background technique [0002] In modern water conservancy projects, there are many forms of displacement sensor devices for measuring gate opening, which can be roughly divided into the following three types: wire rope rotary encoder, black ceramic piston rod plus CMS stroke detection, and rigid non-contact displacement sensor. [0003] The wire rope rotary encoder displacement sensor device is the earliest mature product in hydraulic engineering. It uses the circumference of the wire rope roller to measure the length and distance of the object. Its main components are rotary encoder, constant force spring, wire rope and drum. The installation of the wire rope sensor on the gate cylinder is divided into built-in...

AI Technical Summary

Problems solved by technology

The disadvantages of this type of sensor are: the longer the detection length, the greater the error. At present, the stroke detection is mostly within 5 meters. The long stroke also limits the working state of the oil cylinder. If the oil cylinder is too horizontal, it will cause the waveguide to wear due to deflection and shorten the service life of the sensor. , inconvenient for later maintenance

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