Laser wire rod diameter measuring system Ldc-x200

Overview Non-contact diameter measuring system is mainly used to measure the outer diameter of various rods, rods, wires and pipes. The system can detect the change in diameter (outer diameter) of the measured object in real time under high temperature conditions. Operating principle As an example, the diameter measuring system uses the laser scanning method. It uses a sensor imported from Japan, which can achieve ±2μm accuracy in the range of 0.3~30mm. The data collection frequency reaches 2000 times per second. The probe uses a self-excited infrared light source to solve the problem of measuring in the dark. It uses pulse parallel light scanning measurement method and has high ability to resist the vibration of the measured object. (As shown in Figure 1) Since the shaking frequency of the measured object is much lower than the scanning frequency, when the measured object A moves in the shaking area, the measurement result will be able to guarantee its accuracy because the time it blocks the beam does not change. Figure 1: Scanning radiation zone of the probe The detection principle is as follows. Figure 2: Working Principle First, the mold generator generates self-excited high frequency pulses, which are fed to the comparator and servo stepper motor respectively. The stepper servo motor drives the octahedral prism to rotate at high speed and reflects the infrared laser emitted by the laser generator onto the convex lens A. It becomes parallel light and is then collected at the photosensitive element C through the convex lens B into an infrared receiving probe. Photosensitive element C converts this signal into a corresponding electrical signal and sends it to the other end of the comparator for comparison with the original signal. When there is no measured object in the measuring probe, the pulse signal at both ends of the comparator will be the same. Therefore, there is no difference output signal: when there is an object to be measured in the measuring probe, the photosensitive element C will not output a pulse signal during the scanning period through the object being measured. Consequently, both ends of the comparator will receive a difference for a period of time corresponding to the diameter of the object being measured. By calculating the oscillation period of the pulse and the length of the time interval without a pulse, you can find out the diameter of the measured object. Composition and functions of the system The system consists of the following main parts (as shown in Figure 1): 1. A measuring frame with four pairs of high-frequency laser scanning sensors and non-contact infrared thermometers is installed. 2. Four intelligent signal processors connected to four pairs of high-frequency laser scanning sensors. 3. Cold air system for cooling and cleaning the measuring frame. 4. High-performance intelligent controller responsible for external data signal processing and network communication. 5. Data processing and analysis system equipped with an industrial-grade PC, monitor and printer. sales@whzfy.com