6results about How to "Continuous measurement" patented technology

The invention provides a die head lip opening online measurement method, which comprises the following steps of: pre-acquiring propagation velocities of ultrasonic waves in melts at different temperatures through an experiment, and fitting a relation curve between the propagation velocity v2 of the ultrasonic waves in the melts and the temperature T; the temperature T of the melt flowing out of the lip is collected in real time; according to the relation curve, the propagation velocity v2 of the ultrasonic wave corresponding to the current temperature T in the melt is obtained; the ultrasonic transmitting probe is controlled to transmit ultrasonic waves, and the ultrasonic waves sequentially pass through the first wall, the melt and the second wall and are received by the receiving probe; measuring the total propagation time t of the ultrasonic waves transmitted from the ultrasonic transmitting probe to the receiving probe; and calculating the width h of the lip according to a formula. According to the invention, on-line, real-time and high-precision measurement of the opening degree of the lip can be realized.

This invention discloses a gas cylinder permeation test system and method, relating to the field of hydrogen storage cylinder permeation testing. The system includes a test environment control module, whose permeation chamber holds the test cylinder and provides the required ambient temperature, capable of replacing the permeation chamber with an inert gas at a set pressure. A sampling control module, connected to the permeation chamber, extracts the gas from the permeation chamber for analysis. A test cylinder control module fills the test cylinder with test gas and maintains the pressure inside the test cylinder at a set value. A data acquisition and control system controls the test environment control module, the sampling control module, and the test cylinder control module, acquiring the pressure inside the permeation chamber, the temperature inside the permeation chamber, and the pressure inside the test cylinder. It can also calculate the permeability of the test cylinder by combining the gas extracted from and analyzed from the permeation chamber. This gas cylinder permeation test system and method enables automatic and continuous measurement, with high safety and efficiency during the testing process.

The utility model relates to the technical field of glass cover plate processing, in particular to a glass cover plate full-size measurement production line, which comprises a charging tray for containing a glass cover plate and a flow tray machine for conveying the charging tray, and further comprises a rotating disc type measurement mechanism and an objective table, the rotating disc type measuring mechanism comprises a rotating disc, a driving mechanism, a carrier mechanism, a positioning mechanism, a measuring mechanism and a feeding and discharging mechanism. According to the full-size measurement production line for the glass cover plate, the flow table machine and the automatic rotating disc type measurement mechanism are adopted, the measurement efficiency of a semi-automatic size measurement instrument is improved, the automatic feeding and discharging mechanism is carried, actions such as automatic sheet taking, automatic positioning, automatic measurement, automatic sheet collecting and automatic NG sheet grabbing are completed through machine connection and collaborative operation, and the production line is high in automation degree and high in production efficiency. The full-line operation efficiency is maximized, rapid measurement and rapid output are further achieved, intermittent feeding and continuous measurement can be achieved, and the operation intensity of workers is reduced to a great extent.

The application discloses a high-temperature coating crack rate measurement method, an in-situ device and a product. The method comprises the following steps: in an in-situ loading test, acquiring a real-time test image of a coating sample; calculating a real-time crack depth according to the real-time test image; when the real-time crack depth reaches a preset coating thickness threshold, starting an X-ray emitter and monitoring a transmission light intensity distribution of the X-ray in real time; when the transmission light intensity distribution is suddenly changed, stopping the in-situ loading test, and calculating a crack propagation rate according to a crack length included in the real-time test image. The method can realize high-precision, real-time and in-situ measurement of the crack propagation rate of the high-temperature coating, thereby improving the accuracy and reliability of crack parameter detection and rate calculation.

The invention relates to the field of thickness measurement tools, in particular to pipe thickness measurement, and specifically relates to a handheld pipe full-circumferential wall thickness measurement device and a measurement method. The device overcomes the problems of low speed and inaccuracy caused by limited measurement range in the measurement of the whole peripheral wall of the pipe in the prior art, can quickly and accurately measure the thickness of the whole peripheral wall of the pipe, improves the measurement efficiency and precision, and provides powerful support for the quality control and performance evaluation of the pipe. The upper part of the side surface of the base is provided with a cantilever support which is transversely distributed, the lower part of the side surface of the base is provided with a measuring anvil rod which is transversely distributed, the outer end of the cantilever support is provided with a dial indicator, the outer end of the measuring anvil rod is provided with a spherical measuring anvil head, and the outer side of the inner end of the measuring anvil rod is sleeved with a rotatable miniature bearing; the lower end of the measuring rod of the dial gauge is provided with a rolling wheel measuring head which is arranged right above the measuring anvil head.

The invention belongs to the technical field of industrial measurement, and particularly relates to a code band position and speed identification method and system. The method comprises the following steps: constructing and storing a standard coding model adaptive to a current identification program; carrying out continuous light beam scanning sampling on the code band according to a preset sampling period, collecting a light intensity change signal representing the physical structure of the code band, and converting the light intensity change signal into a discretized one-dimensional time sequence photoelectric signal; preprocessing the one-dimensional time sequence photoelectric signal; a continuous sampling frame matching mode with a multistage filtering fault-tolerant mechanism is adopted, the preprocessed one-dimensional time sequence photoelectric signal is compared with a standard coding model, and the absolute position and the accurate position of a current scanning section in a code band are determined; and calculating the running speed of the moving target based on the displacement variation of the matching result of the continuous sampling frames and the sampling period. According to the invention, the problems of insufficient adaptation flexibility, poor stability in a complex environment and weak anti-interference capability of the existing code band detection system can be solved.