27results about How to "Guaranteed measurement stability" patented technology

The invention provides a multi-sensor fusion downhole drilling tool rotating speed control method and application. The rotating speed control method comprises the steps that rotating speed measurement is conducted, specifically, the rotating speed of an internal control system is obtained through a gyroscope and a vibration sensor, and the rotating speed of an external drill collar is obtained through a magnetoresistive sensor and the vibration sensor; rotating speed control: when the internal control system is static in space, the gyroscope acquires rotating speed data of the internal system, and the vibration sensor acquires vibration data; processing the vibration data by using a Butterworth high-pass filter, extracting rotation speed fluctuation, and performing torque compensation on internal system rotation speed data acquired by the gyroscope according to the rotation speed fluctuation to obtain a real-time rotation speed of an internal control system; when the internal control system rotates along with a certain rotating speed difference or the internal control system is switched between a static mode and a rotating along mode to do variable motion, the relative rotating speed of the real-time rotating speed of the internal control system and the real-time rotating speed of the external drill collar is measured, the rotating speed of the internal control system is adjusted through a gyroscope, and the relative rotating speed is measured multiple times till the expected effect is achieved.

The invention discloses a laser gas measuring device and method, a storage medium and a controller, the device comprises a laser light source module, an open measuring gas chamber, a closed gas block and a laser detection module, in the first direction, the axes of the laser light source module, the open measuring gas chamber, the closed gas block and the laser detection module are located on the same straight line, and the device further comprises a control module, the controller is connected with the laser light source module and the laser detection module and is used for controlling the laser light source module to output the laser with the target center wavelength, acquiring detection light intensity generated by the laser detection module after the laser transmits through the open measuring gas chamber and the closed gas block, and determining the concentration of the gas to be detected according to the detection light intensity; and calibrating the central wavelength of the laser output by the laser light source module. According to the device, a standard closed gas block is arranged in a measurement light path, so that self-calibration and concentration measurement do not need to be switched, the gas measurement stability is ensured, the self-calibration operation process can be simplified, and the structural complexity of the laser gas measurement device is reduced.

This application discloses a precision capacitance sensing system, comprising a modulation signal source, a sensitive probe, a differential transformer bridge, a signal amplification link, an analog multiplier, and a low-pass filter circuit, all connected in sequence. It also includes a demodulation reference signal source, the output of which is connected to the second input of the analog multiplier. The demodulation reference signal source is used to generate a multi-frequency combination demodulation reference signal, which is composed of a fundamental frequency component and at least two harmonic components superimposed. This invention also discloses a precision capacitance sensing method. By employing a specially designed demodulation reference signal, this application ensures that the system output remains constant within a continuously varying range of the demodulation phase difference, thereby achieving complete insensitivity to phase difference fluctuations and effectively overcoming the performance bottleneck that has long constrained high-precision capacitance sensing.

The utility model provides a pipeline oil leakage monitoring system of a transformer insulating oil on-line monitoring device. The pipeline oil leakage monitoring system comprises a non-contact ultrasonic flow sensor, a data acquisition and analysis device, a communication device and a monitoring alarm device, the non-contact ultrasonic flow sensor is installed on the outer wall of an oil inlet pipeline of the insulating oil online monitoring device so as to collect the flow of insulating oil passing through the oil inlet pipeline of the insulating oil online monitoring device. The non-contact ultrasonic flow sensor is in communication connection with the data acquisition and analysis device so as to send acquired insulating oil flow information to the data acquisition and analysis device for processing through the non-contact ultrasonic flow sensor; the data acquisition and analysis device, the communication device and the monitoring alarm device are in communication connection in sequence, so that the processed flow information is sent to the monitoring alarm device through the communication device, a flow information curve is formed in the monitoring alarm device, and the oil leakage state of the pipeline of the online insulating oil monitoring device is monitored. The non-contact ultrasonic flow sensor is adopted, the installation cost can be reduced, and the monitoring accuracy is improved.

This utility model discloses a netball and badminton large coil string shearing machine, including a workbench. Four legs are fixedly installed at the bottom of the workbench, and two large coil string supports are fixedly installed at the top of the workbench. Netball and badminton large coil strings are movably installed between the two supports via positioning pins. Two support rods are fixedly installed at the top of the workbench, and an anti-skip string device is movably installed at the top of each support rod. A meter counter and a meter display are fixedly installed at the top of the workbench, and a fixed plate is fixedly installed at the top of the workbench. A support frame is fixedly installed on one side of the fixed plate, and a rotator is fixedly connected to one side of the support frame. One end of the rotator's movable shaft passes through the support frame and is fixedly connected to a take-up reel. This netball and badminton large coil string shearing machine solves the problem of stringers often relying on rulers during the stringing process, which easily leads to string tangling, greatly improving the stringer's work efficiency.

The application discloses a bipolar square wave excitation generation and conductivity detection circuit, a direct current bias square wave generation circuit can generate direct current bias square wave excitation signals with different frequencies; a direct current bias generation circuit generates a direct current voltage excitation; the direct current bias of the direct current bias square wave is equivalent to the size of the direct current voltage, and two signals are superposed to form a bipolar square wave excitation signal. An internal reference voltage output by an ADC is used as a voltage source of the direct current bias square wave generation circuit and the direct current bias voltage generation circuit; a node voltage of an ADC acquisition circuit is collected, so that the conductivity and temperature of a medium to be measured are obtained. The excitation and detection mode provided by the application ensures that all circuit voltages are positive voltages, simplifies the structure of the excitation and sampling circuit, is high in measurement accuracy, stable in measurement, low in power consumption and capable of meeting long-term online monitoring requirements.

The present application provides a kind of cantilever resonance frequency and quality factor measurement method and device, compared with the measurement method based on the PLL technology of existing phase-locked loop, can more comprehensively grasp sample magnetic property, and when responding to cantilever quality factor mutation, there is good measurement stability.The measurement method of the present application includes: cantilever driving step, wherein the driving signal of first frequency is used to drive the cantilever to vibrate, and then stop the driving signal;Free decay signal acquisition step, wherein in response to the stop of the driving signal, the free decay vibration signal of the free end of the cantilever is acquired;And data processing step, wherein the acquired free decay vibration signal is processed to obtain the resonance frequency and quality factor of the cantilever.

The invention relates to the technical field of aviation auxiliary power device air inlet channel parameter measurement, and discloses a composite material air inlet channel parameter measurement device, which comprises an installation positioning piece, a composite material air inlet channel parameter measurement device, a composite material air inlet channel parameter measurement device, a composite material air inlet channel parameter measurement device and a composite material air inlet channel parameter measurement device, and is characterized in that the installation positioning piece is matched with an outlet of an air inlet channel in shape; the supporting rod assembly is fixedly installed on the installation positioning piece, the supporting rod assembly is suitable for extending in the radial direction of the air inlet channel outlet, the supporting rod assembly penetrates through the installation positioning piece, a monitoring assembly and an external connector are arranged on the supporting rod assembly, the monitoring assembly is arranged on the inner side of the installation positioning piece, and the external connector is arranged on the outer side of the installation positioning piece; the monitoring assembly is in communication connection with the external connector. The installation positioning piece is arranged at the outlet of the air inlet channel, and the supporting rod assembly with the monitoring assembly is fixedly installed through the installation positioning piece, so that the situation that the monitoring assembly is directly installed on the surface of the composite material air inlet channel to implement destructive connection operation can be avoided, and the monitoring assembly can directly stretch into the outlet of the air inlet channel to conduct parameter measurement.

The utility model provides a kind of photoelectric measuring instrument, comprising: marble measuring base plate, marble measuring base plate upper side is equipped with photoelectric measuring equipment, marble measuring base plate is equipped with environmental control box on the outside of photoelectric measuring equipment, the environmental control box includes box support frame, the box support frame lower end is installed on marble measuring base plate, equipment controller is equipped with on the outside of box support frame, a plurality of reinforcing support rods are equipped on the box support frame, fixed box door is equipped with on the one side of the box support frame front end, and the other side is equipped with sliding sealing box door, measuring light supplementing equipment is equipped with on the box support frame upper end, temperature control device is equipped on the box support frame. The utility model not only can realize the quick measurement of electronic equipment, and, can provide more stable measurement environment, ensure measurement accuracy and stability.

The utility model discloses a pedal detection device used for a vehicle, the pedal detection device comprises a base plate, a first detection member and a second detection member, a bearing surface is formed on the base plate, and the base plate is provided with a positioning part; the first detection piece is arranged on the bearing surface and extends in the first direction, and a first scale is formed on the first detection piece and is suitable for measuring the position of the pedal in the first direction; the second detection piece is movably arranged on the first detection piece and extends in the second direction, a second scale is formed on the second detection piece, the second scale is suitable for measuring the position of the pedal in the second direction, and a first locking part suitable for locking the relative position of the first detection piece and the second detection piece is arranged on the second detection piece. According to the pedal detection device provided by the utility model, the positions of the pedal in the first direction and the second direction can be respectively detected through the first detection piece and the second detection piece, the measurement stability is ensured through the first locking part, and the accurate detection of the position of the pedal is realized.

The utility model discloses a measuring device for aluminum guide roller production, and relates to the technical field of aluminum guide roller measurement, the measuring device comprises a housing main body, a lifting groove, a lifting hole, a roughness instrument of a through groove, and an auxiliary support assembly, the auxiliary support assembly comprises a support unit, an adaptive unit, and a driving unit; the supporting units are used for increasing the contact area of the shell body and the surface of the aluminum guide roller. The adaption unit is used for enabling the bottom of the supporting unit to be matched with the arc shape of the surface of the aluminum guide roller; the driving unit is used for providing power for downward movement of the supporting unit. According to the utility model, the auxiliary support assembly is arranged, the plurality of telescopic support pillars move downwards by pressing the pressing plate, the bottoms of the plurality of telescopic support pillars are attached to the surface of the aluminum guide roller, and the bottom distribution track of the plurality of telescopic support pillars is matched with the cambered surface track of the aluminum guide roller, so that the bottom of the shell main body is supported; the shell main body is effectively prevented from shaking, and the measurement stability is ensured.

The application discloses a kind of based on non-invasive temperature monitoring's superhigh pressure container process phase identification method, it is related to superhigh pressure container monitoring technical field.The upper end cover of the working cylinder body of the superhigh pressure container is installed with at least two temperature sensors in non-pressure area, and the lower end cover is also installed with at least two temperature sensors in non-pressure area;The method comprises the following steps: synchronously collecting the temperature time series data of each temperature sensor;Extracting multidimensional temperature feature vector from the temperature time series data, the multidimensional temperature feature vector includes: the instantaneous temperature difference between the upper end cover and the lower end cover measuring point, the temperature change rate of the upper end cover and the lower end cover measuring point respectively, and the time series lag feature of the temperature response of the upper end cover and the lower end cover measuring point;Based on the multidimensional temperature feature vector, the current process phase is identified, and the process phase includes at least one of the pressurization stage, the pressure maintaining stage, the pressure relief stage and the cycle stage.

The invention discloses a split type multi-circle magnetoelectric absolute position measuring device, and belongs to the technical field of position measurement. The device comprises a base, a shell, a main rotating shaft, magnetic steel, a supporting plate, a gear reducer and a circuit board, a driving gear shaft and a gear reducer driven gear shaft meshed with the driving gear shaft serve as input, the tail end of a main shaft is inserted into a motor shaft and fastened from the upper portion through a screw, and the upper end of the driven gear shaft is connected with the supporting plate while the lower end of the driven gear shaft is connected with the base. According to the position measuring device, the split structure design and axial and circumferential positioning are realized, the risk that the structure of the speed reducer is damaged or stuck due to axial play displacement in the rotating process of the motor is effectively solved, the reliability and stability of the position measuring device are improved, and the actual angle information of the rotation of the motor is accurately output.

The utility model is specifically related to a kind of hall flowmeter, including main casing, impeller assembly is equipped in the main casing, installation lower seat is equipped on the main casing, installation upper cover is equipped on installation lower seat and installation cavity is formed between the two, hall sensor assembly is connected in installation cavity on installation lower seat, the hall sensor assembly includes the hall sensor main body and hall sensor pin connected, and installation upper cover lower end is equipped with the abutting portion that abuts with the upper end of hall sensor main body.The hall plate assembly is installed on installation lower seat, then installation upper cover is connected with installation lower seat, the abutting portion of installation upper cover lower end is formed abutting cooperation with hall sensor main body when completing assembly, so that it will not warp, to ensure measurement accuracy and stability.

The utility model discloses a device for measuring the pH value of a surfactant aqueous solution, which comprises a pH meter main body, one side of the pH meter main body is fixedly connected with a wire, one end of the wire is provided with a pH electrode, one side of the pH meter main body is provided with a fastening part for fixing the pH electrode, one side of the pH meter main body is provided with a positioning part for preventing a beaker from toppling, and the other side of the pH meter main body is provided with a water inlet and a water outlet. The fastening component comprises a support frame connected with one side of the PH meter main body, a screw rod connected with the support frame, a fastening plate connected with one end of the screw rod, and a first knob connected with the other end of the screw rod. The problems that although an existing measuring device can measure the pH value of a surfactant aqueous solution, when the existing measuring device is used, a PH meter electrode is not provided with a fixing structure and is prone to swinging, the PH meter electrode is prone to being damaged if collision occurs, and then the accuracy of a measuring result is affected are solved.

The present invention provides a remote transmission component with a double isolation diaphragm for a pressure transmitter (1), the remote transmission component comprising a base (10) having three through holes and isolation diaphragms (7, 8) arranged on both end surfaces of the base (10). The present invention also provides a remote pressure transmitter, the remote pressure transmitter comprising the remote transmission component and a pressure transmitter (1) connected to the remote transmission component. Under the same flange caliber, compared with a conventional single diaphragm remote pressure transmitter with a small-caliber flange, the remote pressure transmitter of the present invention increases the effective area of ​​the isolation diaphragm to be measured, thereby reducing the diaphragm stiffness, and can effectively solve the quality problem of large temperature drift and instability of the remote pressure transmitter.

This application provides a method for predicting the conversion rate and self-correcting parameters of polymerization reactions in a coaxial dual-stirred reactor, relating to the fields of intelligent manufacturing and chemical process control. The method includes: synchronously acquiring real-time torque and current components of the inner and outer shaft drive motors of the reactor, real-time speed of the stirrer, and real-time material temperature; preprocessing the acquired signals; performing a cross-product operation on the preprocessed current and speed, obtaining a dimensionless characteristic ratio after geometric normalization, and collecting its average value during the induction period as a benchmark value; calculating the cumulative deviation of the dimensionless characteristic ratio relative to the benchmark value, taking the moment when the inner shaft current first shows a sustained upward trend as the starting point of the reaction timing; calculating the diffusion limitation coefficient based on the cumulative deviation and the diffusion sensitivity coefficient, wherein the diffusion sensitivity coefficient is adaptively calibrated by the average cumulative deviation within the initial linear interval and the target initial diffusion limitation coefficient; calculating the predicted conversion rate of the polymerization reaction based on the real-time temperature and the diffusion limitation coefficient; and controlling the termination time of the polymerization reaction according to the predicted conversion rate. This invention utilizes existing motor signals from the reactor to achieve online prediction of the polymerization reaction conversion rate, offering advantages such as strong anti-interference capability and adaptability to batch differences.

The application belongs to the technical field of water level monitoring equipment, and specifically discloses a water level monitoring device with a warning function, which comprises a mounting rod, one end of the mounting rod is fixedly connected with a mounting block, a through hole is formed in the surface of the mounting block, and a monitoring mechanism is arranged in the through hole; the monitoring mechanism comprises a sliding rod which is slidingly connected in the through hole, the lower end of the sliding rod penetrates out of the mounting block and is fixedly connected with a first float, and the top of the first float is fixedly connected with a plug block; by arranging the monitoring mechanism and adopting the sectional monitoring design, the first float is used to drive the sliding rod to perform initial monitoring, and the second float is used to perform relay monitoring after the limit is removed, so that the problem that the monitoring rod of the traditional device in a large water level difference water area is too long and is prone to bending deformation under the impact of water flow is effectively solved. The overall structure of the device is more compact and rigid, so that the measurement accuracy and long-term stability of the device in the whole water level change range are ensured.

The present application belongs to the technical field of satellite two-way time comparison. The present application provides a software-based satellite two-way time comparison modulation system and a method of using the same. The loosely coupled design between the modules of the disclosed embodiment can quickly realize the generation of satellite two-way time comparison signals with different precisions, different frequencies, different modulation methods and different coding modes. While ensuring the measurement accuracy and stability, the satellite two-way time comparison modulation system is made flexible and universal, realizing the rapid migration between scientific experiments and practical applications. It can also overcome the problems of high design difficulty, long design cycle and poor flexibility of analog devices and FPGA-based devices.

The invention discloses a circuit breaker spring operating mechanism operation detection and adjustment device and method. The method comprises the steps that firstly, contact displacement data and closing spring pressure data are acquired; judging whether the contact displacement is in a normal range or not and whether the closing spring pressure reaches the bearable maximum value or not; and finally, the action time of the contact is compensated according to the judgment result of the data judgment module. According to the technical scheme, multiple times of adjustment of the closing spring are avoided while the operating characteristic measurement stability of the circuit breaker is ensured, the working efficiency is improved, and the service life of the mechanism is prolonged.

The invention discloses a high-stability closed-loop measurement system based on a piezoelectric displacement table, comprising a piezoelectric displacement table and a sensor bracket; the piezoelectric displacement table is provided with a sample table; two mutually perpendicular reflection surfaces are provided on the sample table; a sensor chuck and a probe bracket are connected to the sensor bracket; the sensor chuck is provided with a clamping hole and three strip-shaped notches, and the three strip-shaped notches are arranged in a Y shape and intersect at the position of the clamping hole; a through hole is provided on the side of the sensor chuck, which is arranged perpendicularly to the clamping hole, and the clamping hole is divided into two front and rear sections with a total of six contact surfaces, so that the laser interferometer is clamped at six points to ensure the stability of the clamping. The invention realizes flexible clamping by providing a clamping hole and three Y-shaped strip-shaped notches on the sensor chuck, so that the sensor chuck can adapt to the stress and strain caused by the temperature of the laser interferometer probe, so that the overall measurement stability and accuracy of the measurement system are effectively improved.

This invention discloses a three-degree-of-freedom wide-field-of-view multi-line laser 3D reconstruction device for porcelain, enabling the multi-line structured light measurement platform to cover the entire outer surface of the porcelain. The device employs a unique rotation-lift-rotation (RLR) three-axis linkage mechanical structure, driving the open-type support platform and the "head-shaking" sensor platform to move in tandem, achieving flexible and precise adjustment of the imaging system and the porcelain's pose. This RLR three-axis linkage method solves the problem of insufficient coverage of the entire circumference of the porcelain surface and complex occluded areas (such as bottle handles and inner walls) using traditional methods, ensuring high density and high integrity of the 3D reconstruction. The device uses a frame-type support and a three-degree-of-freedom decoupled structure, ensuring overall rigidity and measurement stability, and can adapt to porcelain of different sizes while providing a large coverage area. The system is mainly constructed from standard parts and a series multi-degree-of-freedom mechanism, offering advantages such as low cost and ease of installation and maintenance, providing an efficient, stable, and highly adaptable dedicated solution for high-precision 3D digitization of porcelain.

The utility model discloses a card thickness detection device, which comprises a frame body, a conveyor belt module, a roller detection module, an elastic support module, a damping module, a displacement detection unit and a data processing module, and is characterized in that the elastic support module and the roller detection module act synergistically, so that a roller is contacted with the surface of a card and is jacked up when the card passes through; the elastic supporting module and the damping module cooperate to limit the jumping height of the roller, so that the reset time of the roller is less than or equal to 0.1 second after a single card passes, and the equipment achieves high-precision thickness detection and 0.1-second rapid reset matched critical damping design through the cooperation of elastic supporting and hydraulic damping, and gives consideration to the response speed and stability. The composite supporting structure effectively filters high-frequency vibration and conveyor belt disturbance, adapts to 0.5-2m / s variable-speed operation, and remarkably improves the detection efficiency.

The invention provides a method and system for measuring the damage depth of linear cutting, and the method and system are used for measuring the damage depth of a silicon wafer after linear cutting, and the method comprises the steps: determining a transition region between the outer surface of the silicon wafer and a damage region; an upper boundary line and a lower boundary line of the transition area are parallel to each other, and the upper boundary line and the lower boundary line are determined according to the line mark direction and the position information of the damage point; constructing a boundary which is parallel to the upper boundary and equally divides the transition area; constructing a damage termination line parallel to the boundary line through the Nth damage point in the damage area; and measuring the distance between the boundary and the damage termination line as the damage depth of the silicon wafer. According to the method, by defining the transition area and defining the standards of the boundary and the damage termination line, the problems of boundary fuzziness and data errors existing in damage depth measurement are solved, the measurement accuracy and repeatability are improved, the measurement instability caused by accidental errors is reduced, and the application type is wide.

The invention discloses an automatic gas inlet system of an isotope ratio analyzer, and is applied to the technical field of isotope measurement. Comprising a gas inlet device, an adjusting device and a control device, gas enters the isotope ratio analyzer through the gas inlet device, and the control device controls entering and extraction of the gas through the adjusting device; the control device receives adjustment parameters and automatically controls the gas inlet device to complete gas inlet, the control device can automatically generate an equipment automatic adjustment scheme for measuring various gases based on a measurement scheme, and gas inlet of the various gases and subsequent isotope ratio analysis are automatically completed based on the equipment automatic adjustment scheme; the problem that in the prior art, due to the fact that a measurement scheme is complex, complex manual operation causes operation errors, and consequently analysis results are affected is solved, measurement stability is guaranteed, and meanwhile detection efficiency is improved.

The present application belongs to the technical field of boring, in particular to a deep hole boring tool eccentricity self-adaptive adjusting device, which comprises a mounting plate and further comprises: a first adjusting structure mounted on the mounting plate, the first adjusting structure comprising: two moving plates for driving the blade seat to move, the moving plates being in sliding connection with the mounting plate; a threaded rod one for driving the two moving plates to slide together, the threaded rod one being in rotary connection with the mounting plate; a connecting structure for connecting the blade seat, the connecting structure comprising a cylinder, the cylinder being mounted on the moving plate; a second adjusting structure mounted on one of the moving plates, the cylinder on the moving plate being in sliding connection with the moving plate, the second adjusting structure comprising a threaded rod two for driving the cylinder to move, the threaded rod two being in rotary connection with the moving plate; through the setting of the first adjusting structure and the second adjusting structure, hierarchical control is adopted, the absolute synchronization of the eccentricity of the double blades is ensured in the symmetrical boring mode, and the asymmetry problem caused by the mechanical error of the traditional double screw rods is eliminated.