Diameter gauge optical measuring system and signal ...

At present, in metallurgical line rolling bar process, need to adopt caliper that its external diameter is carried out on-line measurement.Existing caliper directly adopts camera lens as the front end of optical measuring head, because 1) camera optical system is not optical measuring system, is not suitable for high-precision optical measurement; 2) there is larger spherical aberration in camera lens, directly affects image quality; 3) camera lens of purchasing needs to carry out the secondary assembling with other optical component, and alignment is difficult to be guaranteed in technique; 4) manual modulation difficulty, the assembly technology cost is high.

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Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of caliper optical measuring system is provided and based on the emission of the signal of this system and receiving trap, has the assembling of being easy to, the measuring accuracy outstanding advantages such as can be guaranteed.

The technical matters that the utility model solves is achieved through the following technical solutions:

A kind of caliper optical measuring system, formed by photoemission system and photoelectric receiving system, it is characterized in that: the photoemission system is made of the light source that sets gradually, condenser group, emission diaphragm and the first objective lens, light source is positioned at condenser group one side focus place, the emission diaphragm is positioned at condenser group opposite side focus place, the emission diaphragm is positioned at the incident light one side focus place of objective lens simultaneously, the light that light source sends converges at emission diaphragm place through the condenser group, forms collimation horizontal survey light by the light of launching diaphragm after the first objective lens; Photoelectric receiving system is made of the second objective lens that sets gradually, reception diaphragm, optical filter and CCD chip, receive the focus place that diaphragm is positioned at the second objective lens, optical filter is positioned at and receives the diaphragm rear portion, the CCD chip is positioned at the optical filtering rear portion, the measurement optical information that the second objective lens will receive converges at and receives diaphragm and project on the sensitive area of CCD chip after the optical filter modulation.

And described light source adopts Semiconductor LED light source.

A kind of sender unit based on the caliper optical measuring system, it is characterized in that: comprise by light source, the condenser group, the photoemission system that emission diaphragm and the first objective lens consist of, also comprise lens barrel and optically focused sleeve, the first objective lens is installed in the front end of lens barrel, and at the front end of the first objective lens sight glass and end-cap assembly are installed, the optically focused sleeve is installed in rear end at lens barrel, front end at this optically focused sleeve is fixedly mounted with the emission diaphragm, emission diaphragm rear portion is fixedly mounted with described condenser group, rear portion in the optically focused sleeve is fixedly mounted with light source, and its rear end is fixedly mounted with the lock ring with through wires hole.

And described end-cap assembly also comprises stop back-up ring, end cap seat and lens barrel end cap.

And described light source blocks up by light source base and light source and is packed in the optically focused sleeve inner, and light source base is positioned at the light source front portion, is shaped with light hole on the light source base, the stifled light source rear portion that is positioned at of light source.

And described lens barrel and optically focused sleeve, optically focused sleeve and optically focused microscope base, optically focused sleeve are fixedly mounted with by holding screw after coaxial technique assembling with the emission diaphragm.

A kind of signal receiving device based on the caliper optical measuring system, it is characterized in that: comprise by the second objective lens that sets gradually, receive diaphragm, the photoelectric receiving system that optical filter and CCD chip consist of, also comprise lens barrel, optical filtering bar and chip carrier, described the second objective lens is installed in the front end of lens barrel, and the end-cap assembly that comprises sight glass is installed at the front end of the second objective lens, the coaxial optical filtering microscope base that is fixedly mounted with in the rear end of lens barrel, leading section at this optical filtering bar is fixedly mounted with described reception diaphragm, be fixedly mounted with described optical filter at the optical filtering bar that receives the diaphragm rear portion, rear portion at the optical filtering microscope base is fixedly mounted with chip carrier, be fixedly mounted with described CCD chip in chip carrier inside, the chip carrier rear portion is fixed with rear end cap and eccentric penetration pipe.

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And described lens barrel and optical filtering microscope base, optical filtering microscope base and chip carrier, optical filtering microscope base and reception diaphragm use holding screw to be fixedly mounted with after coaxial technique assembling.

Advantage of the present utility model and beneficial effect are:

1, caliper optical measuring system of the present utility model, the optical system of its photoemission system and photoelectric receiving system all adopts object space telecentric beam path structure to design, the collimation parallel rays that the photoemission system sends consists of measures the visual field, when measured object is being measured the visual field through out-of-date, the shade that blocks that forms directly projects on the interior CCD chip sensitive area of photoelectric receiving system, calculate the physical size of measured object according to the size of projection, have high accuracy of detection.

2, in the caliper optical measurement emission coefficient of the present utility model, the light that light source sends converges at emission diaphragm place through the modulation of condenser group, again modulation by the emission diaphragm, after the first objective lens, form the horizontal survey light with higher collimation, solved the demand of high-acruracy survey to high collimation directional light visual field.

3, in the caliper optical measurement receiving system of the present utility model, also adopt diaphragm that light is modulated, effectively control and reduced the impact of spherical aberration on image quality.

4, sender unit of the present utility model and signal receiving device all adopt coaxial assembly technology, guarantee the coaxial consistance of the optical components such as lens barrel, optical filtering microscope base, chip carrier, reception diaphragm and the second objective lens in the lens barrel in the emitter, light source, condenser group, emission diaphragm and the first objective lens and the receiving trap, reduced the manual setting difficulty.

5, the utility model scientific structure design is reasonable, and parts interchangeability is strong, is easy to assembling, and the measuring accuracy outstanding advantages such as can be guaranteed is a kind of system for the photoelectric measurement of caliper on-line measurement with novelty.

Achieving precise distance measurements with photoelectric sensors requires a combination of careful selection, strategic setup, and consistent maintenance. First and foremost, it&#;s vital to choose a sensor that aligns with the specific demands of your application. This means selecting a sensor with a light source and configuration that are best suited to the material properties of the target and the environmental conditions of the workspace. For example, a sensor that uses infrared light might be more effective in dusty conditions, while a laser-based sensor could offer better precision in clear environments.

Additionally, the setup of the sensor must be meticulously planned. Proper alignment and positioning are essential to ensure the light beam accurately interacts with the target object without any obstructions or unwanted reflections. This setup process might include adjustments to the sensor&#;s angle and height, as well as considerations for any potential sources of interference.

Regular calibration and maintenance of the sensor are equally important. Over time, factors such as vibration, exposure to extreme temperatures, and even routine wear and tear can affect a sensor&#;s accuracy. Scheduled calibrations and routine checks can help catch and correct these issues before they lead to measurement errors. Furthermore, protective measures should be put in place to shield the sensor from environmental challenges like moisture and dust, which can degrade its performance. By following these best practices, you can ensure that your photoelectric sensors deliver reliable and accurate distance measurements, enhancing the efficiency and quality of your operations.

For more information, please visit Photoelectric Camera Diameter Gauge.