39results about How to "Improve calibration work efficiency" patented technology

The invention discloses a method for automatically checking the protection functions of a microcomputer main-transformer differential protection device. The method includes the steps of starting a checking mode, shutting external alternating current sampling, reading a protection control word and a protection control definite value, starting to test an item of a test, judging whether protection is input or not, shutting other protection functions, generating a test sequence according to the definite value, carrying out alternating current input assignment, judging whether the protection acts or not, recording action values and action evaluation, releasing protection function shutting, judging whether the test is completed or not, generating a function checking report, printing the function checking report, exiting from the checking mode, starting external alternating current sampling and the like. By means of the method, extra hardware cost and extra outside loop wiring are not needed, testing of the various protection functions of the whole device can be completed without manual intervention and protection for a tester, the testing process and the testing result are dynamically displayed in real time, and the test report is automatically generated. Due to the automatic checking technology, device test items are standardized, and technical errors, such as test item missing, testing method mistaking and testing result misjudgment, caused by the capacity of workers are avoided.

The invention discloses a method and a system for checking regulation and control information. The method comprises the following steps that an SCD (Substation Configuration Description) file of a substation is imported into a simulation program; the simulation program sends all action messages in the substation to a telemechanical apparatus and a monitoring background at a scheduled time interval in sequence according to a content of the SCD file; the monitoring background records all received action messages; an analog master station records all received action messages forwarded by the telemechanical apparatus; and all action messages recorded by the monitoring background and all action messages recorded by the analog master station are compared by utilizing a scheduling information table of the substation. The method does not need to complete construction of a communication channel between the substation and the master station and interactively carry out work with the master station and only needs to construct a simulation environment in the substation; the regulation and control information is checked by utilizing an automated tool and means, so that the working efficiency for checking the regulation and control information is improved.

The invention discloses a liquid level sensor calibration device and a calibration method. The device comprises a mounting box, a control box, guide rails and sliding modules, wherein the mounting boxcomprises an upper plate of a box body, a lower plate of the box body, a bottom plate of the box body, a left plate of the box body, a right plate of the box body and a movable plate; a first scale plate is arranged on the left plate of the box body; a first guide rail is formed in the inner surface of the left plate of the box body in the direction close to the first scale plate; a second guiderail is formed in the movable plate; the sliding modules are mounted on the first guide rail; each the sliding module comprises a sliding rod, a mounting rod, a magnet block, a junction box, a backingplate and a pointer; the movable plate is arranged at the leftmost end of the upper plate of the box body; a second scale plate is arranged on the movable plate; the movable plate is hinged with theleft plate of the box body; and a core controller is mounted inside the control box and is connected with the sliding module through a driver and drives the sliding module to move in the guide rail. The device can improve the calibration accuracy and linearity, and has the advantages of reliable design, compact structure and convenient operation.

The invention discloses a calibration device of a direct-current voltage transformer secondary measurement system. The calibration device comprises a standard direct-current source unit used for outputting first voltage signals according to received synchronous triggering signals and collecting the first voltage signals, a voltage collection unit used for measuring second voltage signals output bythe direct-current voltage transformer secondary measurement system according to the received synchronous triggering signals, a main control unit used for sending control commands used as the synchronous triggering signals and calibrating the direct-current voltage transformer secondary measurement system according to the first voltage signals and the second voltage signals. The calibration device is capable of independently calibrating the direct-current voltage transformer secondary measurement system under the condition that high voltage is not applied to a primary busbar side of a direct-current voltage transformer, so that the potential safety hazards caused by long-term operation of a direct-current high-voltage power supply at rated voltage are avoided, and the field calibration operation efficiency of the direct-current voltage transformer is greatly improved.

The invention discloses an internal expansion type roundness correcting machine for gear rings. The internal expansion type roundness correcting machine comprises a bearing, a rotary bearing, a correction platform, swallow-tail-shaped guide rails uniformly distributed on the correction platform along the peripheral direction, fan-shaped annular correction blocks in sliding fit with the swallow-tail-shaped guide rails, an L-shaped support plate fixed at the bearing, a hydraulic jack vertically fixed at the L-shaped support plate and a pressing head fixed at the lower end of a piston rod of the hydraulic jack, wherein the inner circle surfaces of the fan-shaped annular correction blocks are conical surfaces; the front section of the pressing head is a cone which is matched with the conical surfaces of the fan-shaped annular correction blocks. Through the internal expansion type roundness correcting machine for the gear rings, the gear rings are placed on the swallow-tail-shaped guide rails; then the hydraulic jack is controlled to push the pressing head to move; the pressing head pushes the fan-shaped annular correction blocks to slide along the guide rails; the fan-shaped annular correction blocks are used for applying pressure to the gear rings to correct the deformation of the gear rings; the correction operation is automatically completed; the internal expansion type roundness correcting machine for the gear rings is high in correction operation efficiency and low in labor intensity.

The invention relates to an electric control common rail automatic calibration system which is characterized by comprising a calibration system computer and a testing stand control computer, wherein an automatic calibration function module and a data optimization processing function module are integrated in the calibration system computer, the calibration system computer is connected with an ECU,automatic input of calibration parameters is realized, automatic recording of ECU calibration data and ECU test parameters can be changed, the ECU is used for controlling an engine through an actuatorand a sensor; the testing stand control computer is connected to the engine through a dynamometer and a test device so as to control operating conditions of the engine and collect engine emission data, the emission data is input into the calibration system computer, the calibration data is subjected to optimization processing operation via the data optimization processing function module, and optimization data can be obtained. Convenient and accurate data recording, flexible and convenient control, calibrating efficiency improvement, and reduction of tedious parameter control and data recording work of calibration workers are enabled via the system disclosed in the invention.

The invention discloses a system for detecting and correcting quenching deformation of gear rings through static pressure. The system comprises a detection unit, a loading and unloading unit and a correction unit, wherein the detection unit comprises a bracket platform, a spindle, a rotary platform and an electric control positioning device; the loading and unloading unit comprises a rotary material paw device, a to-be-detected material placing device and a qualified material placing device; the correction unit comprises a correction worktable, a fixed arc pressing block, a movable arc pressing block, an electric control jack and a displacement sensor. Through the system for detecting and correcting quenching deformation of the gear rings through static pressure, the operations of taking, placing, detecting and correcting workpieces can be automatically implemented in the detecting and correcting process; the system is high in detection operation efficiency, high in correction operation efficiency and low in labor intensity; the correction is implemented by controlling the electric control jack to push the movable arc pressing block apply the static pressure to the gear rings by using an industrial personal computer; the displacement sensor is used for detecting the position of the movable arc pressing block in the correction process; the problem of deformation to the gear rings caused by excessively correction of the gear rings can be avoided; the correction quality is higher; the correction operation efficiency is higher.

The invention discloses a device and a method for correcting a coke oven door knife edge. The device is characterized by comprising a mouth-shaped square steel frame, a 5t jack, two 1t jacks and a correcting rotary rack, wherein the mouth-shaped square steel frame consists of an upper beam, two side beams, a lower beam and two hanging hooks; the tops of the two side beams are fixedly welded and connected with the upper beam, and the bottoms of the two side beams are welded with an elliptic hole respectively; two ends of the lower beam pass through the elliptic holes; one end of each of the two hanging hooks is welded with an elliptic hole, the two hanging hooks can be movably hung on the middle part of the lower beam through the elliptic holes, the other ends of the two hanging hooks are provided with an iron hook respectively, and the hook inlets of the two iron hooks are arranged in opposite directions; the 5t jack can be arranged at the bottom of the upper beam, and the bottoms of the 1t jacks can be propped against the oven door knife edge; and one end of the correcting rotary rack can be arranged below the 5t jack, and the other end of the correcting rotary rack can be arranged above the 1t jack.

The invention discloses a nuclear power plant water storage tank liquid level switch calibration device and method, and the device comprises a temporary water storage tank which is provided with a water outlet pipeline which is connected with the top end and the bottom end of a liquid level column, and is used for providing a storage container for the charging and discharging of the liquid level column, the metering pump is arranged on a water outlet pipeline of the temporary water storage tank and used for filling water into the liquid level column, the temporary liquid level meter is parallel to the liquid level column, the bottom of the temporary liquid level meter is connected with the bottom of the liquid level column, and the temporary liquid level meter is used for monitoring liquidlevel in the liquid level column, and the data acquisition and processing device is used for acquiring signals of the plurality of liquid level switches and the liquid level monitoring meter in realtime and processing, displaying and storing the signals. Compared with the prior art, the method has the advantages that the problems of low verification precision, untrusted verification result, verification risk and high cost of an original verification mode are solved, the verification work efficiency of the liquid level switch of the water storage tank is improved, human errors are reduced, and moreover, the risk of influencing safe operation of a unit due to multiple times of verification of the liquid level switch is further reduced.

The invention provides an automatic correction method, device and system of a sampling signal. The method comprises that a control sensor collects a predetermined parameter of a measured object before operation of the measured object and outputs a first analog signal; the first analog signal is converted to digital signals, and an average deviant is calculated by utilizing the digital signals; the control sensor collects the predetermined parameter of the measured object after operation of the measured object and outputs a second analog signal; the second analog signal is converted into an input value; and a practical input value is calculated via the input value and the average deviant.

The invention discloses an automatic checking device for a magnetic turning plate liquid level meter and a using method. The automatic checking device comprises a bottom plate and universal wheels below the bottom plate. The upper surface of the bottom plate is connected with a frame-structured support frame; a plurality of electric push rods are connected to the upper surface of a bottom plate in the supporting frame, the telescopic ends of the electric push rods are upwards connected with a lifting table, and a plurality of chucks are connected to the upper surface of the lifting table and matched and connected with a magnetic turning plate liquid level meter; the upper surface of the bottom plate on one side of the support frame is connected with a side box; the inner wall of the side box is connected with a lifting mechanism; the top of the side box is connected with an equipment box. The device solves the problems that a floater needs to be moved manually and manual stroke measurement is tedious in step, long in consumed time and poor in accuracy when the magnetic turning plate liquid level meter is inspected in the prior art, and has the characteristics that the device is convenient to use, the magnetic turning plate liquid level meter can be automatically and quickly verified, the verification efficiency is greatly improved, and manpower and material resources are saved.

The invention discloses a sensor centering calibration device of an electric power steering system, which comprises a locking unit, an input transmission unit, an output support unit and a calibrationunit, wherein the locking unit is used for clamping and fixing an EPS system; the input transmission unit is used for inputting torque to the input end of the EPS system; the output support unit is used for locking or releasing the output end of the EPS system; the calibration unit is used for calibrating the sensor of the EPS system. According to the invention, a vertical structure is adopted, the locking unit, the input transmission unit and the output support unit are independently modularized, matching construction can be carried out according to the model of the EPS system, and the application range of the calibration device is increased. The whole system can easily carry the EPS system and match and connect each coupling part, the matching and connecting efficiency is high, and thecalibration operation efficiency is improved. The input transmission unit is ingenious in structure and meets the functions of stable matching and connection with the input end of the EPS system, reliable transmission and the like. And the output support unit is reliably connected with the EPS system, and a limiting mechanism can meet the requirements of releasing and locking the output end of theEPS system.

The invention discloses a calibration simplification method of a pressure sensor. The method comprises the following steps: 1) placing a pressure sensor in a corresponding temperature environment, applying different pressures to obtain experimental calibration data, and sending the experimental calibration data to an upper computer; 2) performing normalization processing and feature expansion on the calibration data; 3) using a hybrid polynomial kernel extreme learning machine optimized by an improved eagle optimizer to learn calibration data to obtain a calibration calculation model; 4) inputting the values of the uncalibrated temperature points and pressure points into the trained calibration calculation model to obtain model calculation data; and 5) integrating experimental calibration data and model calculation data to form an online compensation data table, sending the online compensation data table to the MCU, and performing online temperature compensation on the pressure sensor by using a linear interpolation method. Through a small amount of calibration data, calculation data of the whole temperature zone can be inferred, temperature and pressure points needing to be calibrated are reduced, calibration work efficiency is improved, energy consumption is reduced, and temperature compensation precision is improved.