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Cable diameter measuring instrument: Solutions ① Use imported LED light sources with a brightness of over 50,000 mcd to provide a high-brightness light source that enables clear visualization of the shadows on the rolled material. ② The introduction of electronic shutter technology reduced the exposure time of the probe to 100 microseconds. The ghosting phenomenon that occurs when the object under test vibrates has been eliminated. ③ In the circuit system, various synchronization techniques are employed, including pulse synchronization between the light source and the signal acquisition unit, multi-channel acquisition synchronization, and synchronization between signal acquisition and communication transmission. ④ The mounting bracket is secure, ensuring the stability of the diameter measuring instrument. ⑤ It isolates most vibration interference sources from high frequencies to low frequencies, prevents shaking caused by instability in the diameter measuring instrument, and enhances the overall stability of the equipment. ⑥ It is installed separately from the rolling line, so it is only necessary to control the vibration of the rolled product; the diameter meter has resolved the issue of inaccurate measurement data caused by such vibration. ⑦ High-frequency measurement technology is employed, using a high-frequency linear CCD chip with a scanning frequency of 15 MHz in combination with a fully digital signal acquisition system; the sampling frequency of the hose diameter measuring instrument is 500 Hz. By taking all types of errors into account, the rubber hose diameter measuring instrument enables high-quality and highly accurate online inspection, thereby improving quality; it is an essential product for circular rolled products in the rubber hose industry as well as in various other industries.