15results about How to "Continuous measurement" patented technology

The present invention relates to a plasma thruster plume parameter multi-point measurement device and a measurement method, the multi-point measurement device comprises: a vacuum chamber; a vacuum pump unit connected to the vacuum chamber; an industrial control unit connected to the vacuum pump unit, used to provide and maintain the vacuum environment of the vacuum chamber; and a measurement unit; the measurement unit comprises: at least two three-dimensional mobile platforms arranged in the vacuum chamber; a detection structure arranged on the three-dimensional mobile platform; a collection unit connected to the detection structure and used to collect data; the detection structure adopts a Langmuir probe, an RPA probe or a Faraday probe. The present invention can improve the plasma measurement efficiency, can continuously measure the multi-point symmetry of the plume, break the limitation of the use of the Langmuir probe, and shield the error interference in the probe circuit. At the same time, the multi-point measurement device of the present invention has a simple structure, is stable and reliable, and has strong practicality.

The invention relates to the technical field of railway catenary geometric parameter detection, and discloses a method for high-precision continuous measurement of catenary geometric parameters, which is characterized in that the method is applied to a device for high-precision continuous measurement of catenary geometric parameters. The device is provided with a laser ranging module, a laser galvanometer module, a control module and a data processing module, the method comprises the step of emitting a ranging laser beam to a laser reflector, and according to the method and device for high-precision continuous measurement of the geometric parameters of the overhead line system, a deflection motor is controlled to drive the laser reflector to perform high-speed high-precision quantitative deflection; a distance measuring laser beam is emitted through a laser measuring module and irradiates a laser reflecting mirror to form a fan-shaped scanning area, laser distance values between a carrier cable, a dropper and a contact line and the laser distance measuring module are obtained at the same time in the area, and a guide height value and a pull-out value of the contact line are obtained after calculation. Therefore, the purpose of continuously measuring the geometric parameters of the contact line with high precision is achieved.

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.

The application provides a kind of road marking thickness continuous detection method and system, belong to marking detection technical field;The method comprises: by distance sensor when detecting car each travel set distance triggers 3D laser profiler and observation camera synchronous acquisition point cloud profile data and two-dimensional image;In two-dimensional image, identify the junction of marking and ground, determine the corresponding junction in point cloud profile using the mapping relationship of pre-calibration;Each point cloud profile is matched and aligned based on shape template, and the 3D point cloud model of the marking after the correction of the detection vehicle is constructed;In 3D point cloud model, the marking plane and the ground plane are fitted respectively, and the height difference is calculated as the marking thickness.The application eliminates the jitter error in vehicle detection by template matching, without knowing the vehicle attitude, can realize sub-millimeter level precision marking thickness continuous measurement, can also calculate the marking width synchronously, high detection efficiency, and suitable for various road environments.

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 invention discloses a two-stage ultrafine particulate matter detection device capable of continuously measuring, which belongs to the field of gas particulate matter detection and testing and comprises a first-stage detection device and a second-stage detection device which are connected in sequence, the first-stage detection device is used for collecting first temperature information of the ultrafine particles and carrying out first-stage detection on the ultrafine particles by using different channels according to the first temperature information to obtain a first-stage detection result, and the second-stage detection device is used for collecting second temperature information of the ultrafine particles subjected to the first-stage detection and carrying out second-stage detection on the ultrafine particles subjected to the second-stage detection to obtain a second-stage detection result; and according to the second temperature information, performing second-stage detection on the ultrafine particles subjected to the first-stage detection by using different channels to obtain the quantity and concentration information of the ultrafine particles subjected to the second-stage detection. The detection precision is improved through secondary detection, continuous application detection of high and low temperature scenes can be realized, the environmental temperature adaptability of detection is improved, and meanwhile, the detection efficiency and the detection convenience are also improved.

The invention provides an OFDR distributed optical fiber measuring device and method for three-dimensional printing medicine. The device comprises a tunable laser, an additional interference module, a main interference module, a temperature / distance real-time calibration module, a measuring optical fiber, a signal demodulation module and an upper computer. The device has the beneficial effects that by controlling the temperature of the temperature / distance real-time calibration module, a physical parameter reference value is provided for the measuring optical fibers, the measuring optical fibers are sequentially and uniformly wound on the melting chamber of the three-dimensional printing medicine production line, and the minimum bending radius of the optical fibers is met; therefore, continuous and online measurement of multiple physical parameters of the three-dimensional printing medicine production line is realized.

The invention relates to the field of water quality monitoring equipment, in particular to a long-period testing device for water quality on-line monitoring equipment, which comprises a high-pressure testing unit and a low-pressure testing unit, the high-pressure testing unit is used for forming a high-pressure testing system, and the low-pressure testing unit is used for forming a low-pressure testing system. The high-voltage test unit and the low-voltage test unit are connected in parallel; the high-pressure test system and the low-pressure test systems are closed systems, the high-pressure test system comprises a plurality of loops and can simultaneously monitor various types of water quality monitoring equipment, and the plurality of low-pressure test systems are connected in parallel and simulate different flow parameters of various types of low-pressure water quality monitoring equipment. The device has the effect of carrying out long-period function and performance testing on the water quality online monitoring equipment.

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 invention relates to the technical field of metallurgical ironmaking, and discloses an infrared continuous temperature measurement system and method for molten iron at a blast furnace tap hole. The two double-color temperature measuring devices are respectively arranged at different tap holes of the same blast furnace and are used for acquiring thermal imaging data and temperature data of molten iron at the tap hole of the current blast furnace in real time; the industrial personal computer comprises a data processing module, a data management module and a data storage module; the data processing module is used for preprocessing the thermal imaging data and the temperature data of the molten iron at the tap hole, which are acquired by the two double-color temperature measuring devices in real time, and transmitting the thermal imaging data and the temperature data to the data management module; acquiring a molten iron temperature threshold value at the blast furnace taphole under the current process from the standard database; when the temperature data exceeds the molten iron temperature threshold value, an alarm is given; through collection and analysis of continuous temperature measurement data, more accurate molten iron quality information can be provided for blast furnace operators, and optimization of a smelting process and improvement of product quality are facilitated.

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 technical field of magnetic field measurement, in particular to a device for accurately measuring magnetic field intensity by combining a multi-layer displacement table with a teslameter. According to the technical scheme, the device comprises an optical plate base, two displacement table fixers are fixed to the top of the optical plate base, two magnet placement devices used for mounting magnets are arranged above the displacement table fixers, and the device further comprises a fixing assembly which is located above the optical plate base and used for fixing a handheld teslameter; the hand-cranking sliding rail is installed on the top of the optical plate base and used for adjusting the horizontal position of the fixing assembly; and a longitudinal adjusting mechanism. According to the invention, transverse position adjustment of the handheld teslameter is realized, longitudinal adjustment and height adjustment of the position of the magnet can be realized, stable positioning of the probe position of the handheld teslameter is realized, measurement errors of a conventional handheld teslameter caused by shaking of the handheld teslameter held by an experimenter are effectively avoided, and the measurement precision is improved.

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 utility model discloses an ultrasonic thickness gauge which comprises a gauge main body, the top end of the gauge main body is provided with an installation groove and a protective cover, the installation groove is arranged at one side of the protective cover, the protective cover is internally provided with a probe, the surface of one end of the gauge main body is provided with a display screen, and the bottom side of the display screen is provided with a control switch and a pyroelectric infrared sensor. A control switch and a spraying nozzle are arranged on the side face of the instrument body, the spraying nozzle is arranged on the bottom side of the control switch, and a winding assembly and a spraying assembly are arranged in the instrument body. According to the ultrasonic thickness gauge, the protective cover is arranged to protect the probe when the ultrasonic thickness gauge is not used, meanwhile, the wire winding shaft is arranged in the ultrasonic thickness gauge, a connecting wire can be stored, the ultrasonic thickness gauge is small in size and convenient to carry, a coupling agent can be stored in the coupling agent storage groove and the spraying nozzle, and the ultrasonic thickness gauge is convenient to use. Couplant spraying and continuous measurement can be achieved, and operation is convenient.

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.