Vibrating wire, differential resistance, current, voltage and potentiometer integrated automatic calibration system

Abstract

The invention discloses a vibrating wire, differential resistance, current, voltage and potentiometer integrated automatic calibration system. The system comprises a visual man-machine interaction interface used for inputting device control parameters and a detection scheme and outputting a detection result; the multi-signal source unit is used for generating high-precision and standardized difference resistance signals, vibrating wire signals, current signals, voltage signals and potentiometer signals; the mixed channel measurement control unit is used for automatically identifying and accurately switching various signals, ensuring that a source signal is strictly matched with acquisition excitation, and ensuring the safety of calibration equipment; the control and processing unit is used for controlling the signal source unit and the mixing channel measurement control unit and exchanging information with the visual human-computer interaction interface; performance detection of the hydraulic engineering safety monitoring data acquisition module is realized through an automation technology; according to the invention, the working efficiency and precision of automatic acquisition module calibration are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and particularly relates to a comprehensive automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer. Background Art

[0002] During the long-term operation of the water conservancy project safety monitoring system, there are objective situations such as the aging of the signal acquisition module and the decline in performance, resulting in problems such as an increase in data measurement errors and distortion. Therefore, it is necessary to regularly detect and calibrate the signal acquisition module. At present, the commonly used manual comparison method for calibration is inefficient. At present, the various models of acquisition modules used in engineering can be divided into differential resistance type, vibrating wire type, potentiometer type, standard quantity type, digital type, etc. according to different sensor working principles. For the comprehensive detection of the acquisition device of the entire detection system, multiple sets of calibration devices need to be used in combination, resulting in a cumbersome detection process and a lack of efficient means for organizing different types of detection results, with a high error rate. Summary of the Invention

[0003] Object of the Invention: The object of the present invention is to provide a comprehensive automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer, which overcomes the problem that manual comparison cannot comprehensively and effectively diagnose the measurement performance of the automatic system.

[0004] Technical Solution: A comprehensive automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to the present invention is characterized in that it includes: a visual human-computer interaction interface for inputting device control parameters and detection schemes and outputting detection results; a multi-signal source unit for generating high-precision and standardized differential resistance signals, vibrating wire signals, current signals, voltage signals, and potentiometer signals; a mixed-channel measurement control unit for automatically identifying and precisely switching various signals to ensure that the source signal and the acquisition excitation are strictly matched and to ensure the safety of the calibration equipment; a control and processing unit for controlling the signal source unit and the mixed-channel measurement control unit and exchanging information with the visual human-computer interaction interface; and realizing the performance detection of the water conservancy project safety monitoring data acquisition module through automation technology.

[0005] Furthermore, the visual human-computer interaction interface realizes the parameter input of multiple signal detection schemes through a unified interface, and supports one-key completion of the full-process equipment detection, calibration, and report output.

[0006] Furthermore, the multi-signal source unit includes independent sub-units, including a differential resistance signal sub-unit, a vibrating wire signal sub-unit, a current signal sub-unit, a voltage signal sub-unit, and a potentiometer signal sub-unit, and each sub-unit can output standardized calibration signals.

[0007] Furthermore, the mixed-channel measurement control unit prevents damage to the equipment circuit caused by the mismatch between the source signal and the excitation through the signal automatic identification and switching function.

[0008] Further, the control and processing unit has built-in detection process logic and supports communication and data exchange with external devices.

[0009] Further, the system has the following functions: integrated signal integration, providing a unified signal output interface through the hybrid channel measurement and control unit; customized detection workflow, customizing the detection process according to the model of the acquisition module; automatic report generation, automatically recording detection data and generating a pass / fail judgment report; multi-model compatibility, supporting NDA2004, NDA2014, NDA1103 / 04, NDA1403 / 04, NDA1523 data acquisition modules.

[0010] Further, integrated signal integration realizes the output of multiple detection signals through a single interface by the hybrid channel measurement and control unit.

[0011] Further, the customized detection workflow presetts detection parameters and processes through the control and processing unit to achieve one-key detection operation.

[0012] Further, the function of automatic report generation includes automatically recording detection data, judging the pass / fail of the result, and generating a detection report in a standardized format.

[0013] Further, the multi-model compatibility function realizes multi-purpose calibration of one machine by adapting to different signal types and communication protocols.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following remarkable advantages: The present invention integrates and optimizes various types of data acquisition and calibration modules according to the existing regulations and norms for detection processes and methods, realizes the integrated calibration of monitoring and acquisition modules of multiple signal types, and improves the applicability of equipment detection. The present invention integrates a human-computer interaction interface, develops digital functions for detection process control, data recording, result analysis, and data report generation, realizes one-key detection of monitoring and acquisition modules of multiple signal types, and improves the convenience of equipment detection. Description of the Drawings

[0015] Figure 1 is the structural framework diagram of the comprehensive automation calibration device of the present invention;

[0016] Figure 2 is the automatic detection flow chart of the comprehensive automation calibration device of the present invention. Detailed Embodiments

[0017] The technical solution of the present invention will be further described below with reference to the drawings.

[0018] As Figure 1As shown in the figure, an integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer provided by an embodiment of the present invention includes a visual human-machine interaction interface, a multi-signal source unit, a mixed-channel measurement and control unit, and a control and processing unit.

[0019] The carrier of the visual human-machine interaction interface is a 14-inch liquid crystal screen, and the input of device control parameters and detection schemes, as well as the display of output of detection results, etc. are carried out through pre-installed management software.

[0020] The multi-signal source unit can simulate various types of monitoring instruments, generate high-precision differential resistance signals, vibrating wire signals, current signals, voltage signals, and potentiometer signals. For example, for the vibrating wire signal, the accuracy can reach 0.01 Hz.

[0021] The mixed-channel measurement and control unit is used to realize the automatic recognition and precise switching of various signals. When it is recognized that the device port is a vibrating wire type, the signal source type is automatically switched to a 10 mV sine wave signal.

[0022] The control and processing unit stores the set parameters of the interaction interface, controls the signal source unit and the mixed-channel measurement and control unit, and exchanges information with the visual human-machine interaction interface.

[0023] According to the requirements of relevant regulations and specifications, combined with the characteristics of water conservancy project automatic monitoring data acquisition equipment, the detection process of the integrated automatic detection and calibration system is designed as Figure 2 shown. It includes processes such as detection preparation, connection of equipment to be detected, setting of acquisition parameters, adjustment of signal sources, automatic signal switching, recording of detection data, accuracy determination, and generation of reports.

[0024] When using this system to calibrate the monitoring module, first carry out the preparation work of the calibration device, such as powering on and starting the device, and checking whether the device is working properly;

[0025] Connect the equipment to be detected to the detection device, and connect the signal line, communication line, and power line;

[0026] Set the working parameters of the equipment to be detected, mainly the acquisition signal parameters of each measurement channel, such as signal type, acquisition range, measurement delay, and carry out necessary adjustments, such as increasing or decreasing the calibration gear, modifying the calibration range, etc.;

[0027] Control the output signals of each signal source, communicate with the signal source through the corresponding interface, send control instructions, so that the signal source outputs the required calibration signals. For example, control the resistance box combination to output specific resistance values of 30.01 Ω and 40.01 Ω, and control the voltage source to output a specific DC voltage signal of +2.5000 V;

[0028] Connect the output signal of the signal source to the equipment to be detected through the signal switching module;

[0029] Send a measurement instruction to the device to be detected, automatically read its actual measurement results, and store the original detection data in the database after marking it with associated elements such as device number, signal type, measurement range, and channel number;

[0030] Judge various types of detection data according to industry standard requirements or set judgment criteria. For example, for signal point detection: realize the detection of various signals and signal ranges, and check the accuracy of a certain range, including the upper and lower limits of the measured signal range, signal zero point, etc.; for consistency detection: mainly used for comparative detection of each detection channel to find possible measurement differences or channel abnormalities in different channels;

[0031] Generate a detection data report, as shown in Tables 1 - 3, accurately record the process data, and give the detection result. When the amount of detection data exceeds the judgment criteria, give an abnormal mark in the data table and an unqualified conclusion in the detection result; otherwise, give a qualified detection conclusion.

[0032] Table 1 Vibration String Frequency and Temperature Test Report

[0033]

[0034]

[0035] Table 2 Differential Resistance Type Sensor Test Report

[0036]

[0037] Table 3 Standard Quantity Type Sensor Test Report

[0038]

Claims

1. A comprehensive automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer, characterized in that, Including: A visual human-machine interaction interface is used for the input of device control parameters and detection schemes and the output of detection results. A multi-signal source unit is used to generate high-precision and standardized differential resistance signals, vibrating wire signals, current signals, voltage signals, and potentiometer signals. A mixed-channel measurement and control unit is used to automatically identify and precisely switch various signals to ensure that the source signal strictly matches the acquisition excitation and guarantee the safety of the calibration equipment. A control and processing unit is used to control the signal source unit and the mixed-channel measurement and control unit and exchange information with the visual human-machine interaction interface. The performance detection of the water conservancy project safety monitoring data acquisition module is realized through automation technology.

2. The integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 1, wherein The visual human-machine interaction interface realizes the parameter input of multiple signal detection schemes through a unified interface and supports one-key completion of the full-process equipment detection, calibration, and report output.

3. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 1, characterized in that, The multi-signal source unit includes independent sub-units, including a differential resistance signal sub-unit, a vibrating wire signal sub-unit, a current signal sub-unit, a voltage signal sub-unit, and a potentiometer signal sub-unit. Each sub-unit can output standardized calibration signals.

4. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 1, characterized in that, The mixed-channel measurement and control unit prevent equipment circuit damage caused by the mismatch between the source signal and the excitation through the signal automatic identification and switching function.

5. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 1, characterized in that, The control and processing unit has built-in detection process logic and supports communication and data exchange with external devices.

6. The integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 1, wherein The system has the following functions: integrated signal integration, providing a unified signal output interface through the mixed-channel measurement and control unit; customized detection workflow, customizing the detection process according to the acquisition module model; automatic report generation, automatically recording detection data and generating a qualified judgment report; multi-model compatibility, supporting NDA2004, NDA2014, NDA1103 / 04, NDA1403 / 04, NDA1523 data acquisition modules.

7. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 6, characterized in that, Integrated signal integration realizes the output of multiple detection signals through a single interface by the mixed-channel measurement and control unit.

8. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer, according to claim 6, characterized in that, The customized detection workflow preset the detection parameters and processes through the control and processing unit to realize one-key detection operation.

9. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 6, characterized in that, The function of automatic report generation includes automatically recording detection data, judging the qualification of the result, and generating a detection report in a standardized format.

10. An integrated automatic calibration system for vibrating wire, differential resistance, current, voltage, and potentiometer according to claim 6, characterized in that, The multi-model compatibility function realizes multi-purpose calibration of one machine by adapting to different signal types and communication protocols.

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