14results about How to "Realize continuous measurement" patented technology

The invention relates to the technical field of pile foundation construction quality monitoring, in particular to a real-time monitoring device and method for a pouring interface of an ultra-long cast-in-situ bored pile. Comprising a monitoring probe mechanism, a tension cable, a control holder, a display industrial personal computer and an alarm, the monitoring probe mechanism is placed in a bored hole of the cast-in-place pile, and the tension cable is electrically connected with the monitoring probe mechanism and the display industrial personal computer; the display industrial personal computer is located on the ground, and the monitoring probe mechanism uploads collected data to the display industrial personal computer on the ground in real time through a tension cable; high-precision real-time monitoring of the pouring interface of the super-long cast-in-situ bored pile is achieved, and it is guaranteed that the position of the pouring interface is accurate; meanwhile, the situation that the monitoring probe is blocked and is difficult to recycle is avoided, and the adaptive capacity of the whole device is greatly improved; continuous measurement of different pouring states and stages is achieved, the real-time monitoring device can feed back position information of a pouring interface in real time, constructors can adjust a construction scheme in time, and the construction quality is ensured.

The invention belongs to the technical field of concentration measurement of flammable and explosive gas, and particularly relates to an on-line measurement device for hydrogen concentration in a containment vessel for a nuclear power plant. Comprising a hydrogen sensor installed in a containment and a secondary measurement and control system installed outside the containment, and the hydrogen sensor is connected with the secondary measurement and control system. An upper protective breathable layer is arranged on the mounting fixing frame, a lower protective breathable layer is arranged below the mounting fixing frame, an upper protective cover is arranged on the upper protective breathable layer, and a lower protective cover is arranged below the lower protective breathable layer; the first temperature measuring sensor is close to the electric heating element and fixed to the center of the upper protective cover, and the distance between the second temperature measuring sensor and the first temperature measuring sensor is 20-30 mm. The continuous measurement of the hydrogen concentration in the containment vessel under the accident condition of the nuclear power plant can be safely and reliably realized.

The invention belongs to the technical field of nuclear power, and particularly relates to a displacement device for a main steam isolating valve and a pressure release valve of a nuclear power plant. According to the displacement device for the main steam isolation valve and the pressure release valve of the nuclear power plant, continuous measurement of the valve element of the pressure release valve can be achieved in the high-pressure environment. Based on an LVDT sensor measuring rod connecting and adjusting part, it is guaranteed that the overall structure of the device is stable and has a certain adjusting range, and electrical zero adjustment can be carried out according to the field installation condition. And a positioning valve block is designed, so that the measuring rod of the sensor and the valve core of the pressure release valve are kept on the same central axis and are not easy to deform. The device disclosed by the invention can be applied to the displacement measurement of the pressure release valve in a main steam isolating valve quick-closing electromagnetic valve / pressure release valve automatic checking device, and confirms the timeliness and accuracy of the action of the pressure release valve in the MSIV quick-closing process and whether the conditions of misoperation, operation refusal, jamming and the like exist or not, so that blind maintenance and wrong repair are effectively avoided; and the spare parts of the pressure release valves which are newly put into use can be checked so as to confirm the availability of the spare parts.

A composite on-site flow meter calibration method is disclosed. This method allows for measurement of individual instruments using standard instruments, and can switch between standard instruments and volumetric measuring devices for simultaneous measurement, as well as between standard instruments and gravimetric measuring devices for simultaneous measurement. Therefore, it enables free switching between various measuring devices for comparison of measurement values, solving the problem of large measurement errors caused by single measurement methods and greatly improving the accuracy of instrument calibration. Furthermore, the instrument clamping device in this calibration method can simultaneously clamp multiple instruments in series for measurement, resulting in high efficiency and allowing for easy adjustment of the clamping quantity as needed, demonstrating strong adaptability. The gravimetric measuring device in this calibration method can accommodate the efficient alternation of two weighing devices while ensuring a relatively stable liquid level in the oil tank, which is beneficial for flow stability during the weighing process.

The invention belongs to the technical field of gas detection, and particularly relates to a gas concentration measurement method and system based on adaptive wavelength. The measurement method comprises the following steps: obtaining a waveform curve of a to-be-measured gas absorption signal; if the current waveform curve is distorted, the to-be-detected gas is scanned again after the current scanning interval is widened until the newest waveform curve is not distorted, and the newest waveform curve is subjected to convolution processing to obtain a second reasonable curve; and if K3 continuous sampling points greater than a third set threshold exist in the absorption interval of the second reasonable curve, recording the current second reasonable curve as a third reasonable curve, and calculating the current concentration of the gas to be detected according to the third reasonable curve, on the contrary, the scanning interval corresponding to the current second reasonable curve is narrowed, and then the to-be-detected gas is scanned again. According to the invention, high-efficiency and accurate concentration measurement can be carried out on to-be-measured gases with different concentrations.

The present application relates to the technical fields of nuclear fusion cold screen tube plate gap measurement, and discloses a nuclear fusion cold screen tube plate gap measurement device, which comprises a measurement mechanism, the measurement mechanism comprises a mounting frame, a light emitting part, a light receiving part and two rollers, a cold screen tube assembly space is formed between the two rollers, the two rollers are rotatably arranged on the mounting frame, and the light emitting part and the light receiving part are arranged on the end faces of the two rollers facing each other; a controller is in communication connection with the light emitting part and the light receiving part, and the controller is configured to determine the gap between the cold screen tube and the cold screen plate according to the light information received by the light receiving part. By arranging the nuclear fusion cold screen tube plate gap measurement device, the risk of surface damage of the cold screen tube caused by direct contact between the nuclear fusion cold screen tube plate gap measurement device and the cold screen tube is reduced, the measurement accuracy is improved, and the continuous measurement of the gap between the cold screen tube and the cold screen plate by the nuclear fusion cold screen tube plate gap measurement device is realized.

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 application discloses a physiological characteristic detection method, system and related device, which is used for realizing low-power consumption and high-precision physiological characteristic parameter detection in a limited physical packaging space. The method comprises the following steps: controlling at least two different wavelength light sources to be lit at different time points in a sampling period according to a preset timing sequence to form a plurality of light emitting periods; setting a reference time slot in the sampling period, and controlling all light sources to be turned off in the reference time slot; collecting corresponding photoelectric signals in each light emitting period through the same photoelectric detector, and collecting a reference signal corresponding to an environmental reference in the reference time slot; separating the photoelectric signals according to the corresponding relationship between the sampling time of the photoelectric signals and the light emitting period in the preset timing sequence, and obtaining initial photoelectric signals corresponding to different light emitting wavelengths respectively; calibrating the initial photoelectric signals by using the reference signal, and extracting physiological characteristic parameters of a target object based on the calibrated effective photoelectric signals.

The invention discloses a gamma unmanned aerial vehicle and a shale field profile stratigraphic division system and method. The gamma unmanned aerial vehicle comprises an unmanned aerial vehicle device, a Bluetooth control module, a communication module, micro drilling equipment, a gamma instrument device and a laser radar device. The communication module and the Bluetooth control module are arranged on a fuselage of the unmanned aerial vehicle device; the gamma instrument device is assembled at the front end of the machine body; a gamma signal collecting probe is arranged at the front end of the gamma instrument device and connected with the gamma instrument device; the laser radar device is assembled at the bottom of the fuselage and connected with the communication module; the ground surveying system is remotely connected with the gamma unmanned aerial vehicle; comprising an unmanned aerial vehicle control module, a data receiving module, a parameter setting module, a data analysis module and a survey output module. Shale field profile measurement and stratigraphic division under complex geological conditions and seriously covered stratums are realized.

The application discloses an on-line monitoring device and method for dissolved gas in transformer oil based on infrared spectrum, which comprises a transformer oil gas separation part, an infrared spectrum gas detection part and a data processing part. The method comprises the following steps: firstly, carrying out oil gas separation; then, sending the obtained dissolved gas in oil into a gas chamber and scanning the gas chamber by using an infrared spectrometer to obtain a spectrum diagram; and finally, obtaining the content of various target gases in oil by using a gas quantitative analysis model. The application uses infrared spectrum method as the gas detection part, has the advantages of fast spectrum data acquisition, no consumption of gas samples, wide detection range, high stability, maintenance-free, long-term operation monitoring cost, etc. compared with the most widely used gas chromatography method for on-line monitoring of gases in transformer oil. The device adopts a structure based on single-chamber vacuum degassing, solves the problem of spectrum baseline offset distortion, and does not need to consume nitrogen as background, thereby improving the automation degree of the device.

The invention belongs to the technical field of marine geotechnical engineering, and relates to a spiral driving type self-installation dynamic penetrometer and an operation method thereof. The dynamic penetrometer comprises a probe, a middle shaft, an empennage and a spiral driving system. And a spiral sheet in the spiral driving system is driven by a motor to rotate to generate axial propulsive force, so that continuous penetration of the dynamic penetrometer into seabed soil is realized. The dynamic penetrometer is further provided with an anti-torsion wing plate, the anti-torsion wing plate provides lateral soil counterforce in the penetration process, overall rotation of the dynamic penetrometer is effectively restrained, and therefore the stability of the penetration process is guaranteed. The defects that a traditional dynamic penetrometer cannot conduct continuous penetration testing and is limited in depth are overcome, continuous and controllable penetration and testing of any target depth in seabed soil are achieved under the condition that the overall weight is almost not increased, no special requirements for exploration ships and sea conditions exist, and the method is suitable for large-scale popularization and application. And the applicability and engineering application capability of the dynamic penetrometer in deepwater and complex seabed environments are remarkably improved.

The utility model relates to the technical field of crane speed detection, in particular to a crane trolley and trolley speed detection device, which comprises a measuring host and a base, the measuring host is fixed above the base, and a battery, a motor driving module and a motor are arranged in the base. A laser ranging module and a high-precision inclination angle sensing module are integrated in the measuring host, a driving shaft of the motor is mechanically connected with a rotating part of the measuring host, the battery is electrically connected with the motor driving module, and the motor driving module is electrically connected with the motor. The problems that in the prior art, measurement equipment is complex in installation, high-altitude operation is needed, measurement precision is limited, manual intervention is much, and efficiency is low are effectively solved, and a safer, more efficient and more convenient crane trolley and trolley speed detection scheme is provided.

The application discloses a casing coupling close distance detection device, which comprises an equipment base, a coupling feeding and discharging mechanism is fixedly connected to the surface of the equipment base, a coupling conveying mechanism is also fixedly connected to the surface of the equipment base, the coupling conveying mechanism is arranged below the coupling feeding and discharging mechanism, a shell is also fixedly connected to the surface of the equipment base, a coupling clamping and rotating mechanism and a close distance detection mechanism are connected to the shell, the close distance detection mechanism is arranged close to the coupling clamping and rotating mechanism, the coupling conveying mechanism passes through the shell, a three-axis moving mechanism is fixedly connected to the surface of the equipment base, a centering detection mechanism and a plug gauge screwing mechanism which are arranged side by side are connected to the three-axis moving mechanism, and a torque monitoring mechanism is connected to the plug gauge screwing mechanism. The application realizes the detection of the close distance of the casing coupling, realizes the torque control in the measuring process, realizes the measurement of the borehole diameter of the coupling and the determination of the original point of the coupling through the centering detection, and avoids the thread damage caused by the wrong buckling in the detection process.

The invention discloses a low-temperature infrared material refractive index measuring device and a measuring method based on single-point detection, which relates to the field of optical measurement technology. The key points of the technical solution are: including: an infrared light source component, which outputs infrared light; a rotating table, which is placed in a vacuum thermostat and adjusts the rotation angle of a test prism; a spectroscope, in which the infrared light is transmitted to the test prism after passing through the spectroscope, and the spectroscope reflects and outputs the light that returns along the original path after being reflected by a reflective film on the back of the test prism; an aiming device, which obtains the signal amplitude that changes with the rotation angle of the test prism through a single-point detector; a processor, which is used to calculate the deflection angle of the test prism after adjusting the rotation angle by a weighted average method according to the signal amplitude and the rotation angle of the rotating table, and determine the refractive index at the current temperature according to the deflection angle. The invention does not require a self-collimating light tube for comparison processing, the optical path of the measurement process is relatively simple, the measurement accuracy and effect are high, and the application cost is low.