A dam embedded monitoring instrument and acquisition device identification equipment

Abstract

A kind of dam embedded monitoring instrument and acquisition device's identification equipment, including central control unit;For connecting the embedded monitoring instrument to be measured, and the stability of embedded monitoring instrument is detected to obtain stability test data embedded instrument detection module;For connecting the acquisition device to be measured, and the measurement accuracy of acquisition device is detected to obtain accuracy test data acquisition device detection module;For carrying out insulation detection to embedded monitoring instrument to obtain insulation resistance measurement value insulation resistance detection module;For setting detection parameter, receiving and displaying stability test data, accuracy test data and insulation resistance measurement value, and based on the preset identification evaluation rule, the received data is automatically analyzed and processed, generates and exports the identification result of intelligent interactive equipment to embedded monitoring instrument and acquisition device.The present application can improve the efficiency of dam safety monitoring system identification work.

Description

Technical Field

[0001] This utility model belongs to the technical field of water conservancy project safety monitoring, and specifically relates to an identification device for a dam-embedded monitoring instrument and data acquisition device. Background Technology

[0002] Dam safety monitoring instruments come in many varieties due to their different sensing principles. Embedded vibrating wire instruments and differential resistance instruments are the most important types of instruments for internal monitoring of dams. Manual reading instruments and automatic data acquisition equipment are the data acquisition devices for manual and automated data collection.

[0003] Embedded instruments are installed along with engineering projects. Over long periods of operation, these instruments are affected by internal and external factors such as component aging, decreased insulation performance, and high-voltage seepage of sensing elements, inevitably leading to a decline in some of their performance or even failure. Meanwhile, the automatic data acquisition equipment within the data acquisition system operates 24 / 7, and its long-term stability is difficult to guarantee due to the complex power supply network environment of the project and the lifespan of the internal acquisition circuit components. Against this backdrop, reservoir dams regularly conduct on-site evaluations and assessments of their monitoring systems to accurately grasp the real-time performance and operational status of monitoring instruments and automated data acquisition equipment.

[0004] Currently, the evaluation of dam safety monitoring systems faces the following problems: Regarding equipment, evaluators must carry multiple reading instruments, multimeters, insulation resistance meters, etc., for on-site testing, resulting in inconvenience, cumbersome wiring, and low efficiency. Regarding data recording, the number of monitoring instruments installed in reservoirs and dams varies from dozens to tens of thousands depending on the project scale, and the number of automatic data acquisition devices also ranges from a few to hundreds. Depending on the evaluation items and instrument types, evaluators must record various data information from the instruments on-site in more than ten different forms, leading to a large volume of recorded information and a high risk of errors. Regarding the analysis of evaluation results, evaluators need to conduct reliability analysis on the various measured values ​​recorded on-site, and professionals are required to compare historical data to judge the instruments. The lack of standardized algorithms means that the evaluation not only relies on the expertise of the evaluators but also carries significant subjective risks. Utility Model Content

[0005] This utility model provides a special equipment for the identification of dam embedded monitoring instruments and their data acquisition devices, in order to solve the problems of complex, cumbersome and inaccurate identification work of dam safety monitoring systems.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An evaluation device for a dam-embedded monitoring instrument and data acquisition device includes: Central control unit; The embedded instrument testing module is electrically connected to the central control unit and is used to connect the embedded monitoring instrument to be tested and to perform stability testing on the embedded monitoring instrument to obtain stability test data. The data acquisition device detection module is electrically connected to the central control unit and is used to connect the data acquisition device to be tested and to detect the measurement accuracy of the data acquisition device to obtain accuracy test data. An insulation resistance detection module is electrically connected to the central control unit and is used to perform insulation detection on the embedded monitoring instrument to obtain insulation resistance measurements. The intelligent interactive device communicates with the central control unit and is used to set detection parameters, receive and display stability test data, accuracy test data and insulation resistance measurement values, and automatically analyze and process the received data based on preset evaluation rules to generate and output the evaluation results of the embedded monitoring instrument and acquisition device.

[0007] Furthermore, the embedded instrument detection module includes a channel switching circuit and a channel multiplexing circuit connected in series. The end of the channel multiplexing circuit is connected in parallel to a vibrating wire instrument acquisition circuit and a differential resistance instrument acquisition circuit. The ends of the vibrating wire instrument acquisition circuit and the differential resistance instrument acquisition circuit are connected to a first serial communication circuit.

[0008] Furthermore, the acquisition device detection module includes a vibrating wire frequency standard signal output circuit, a differential impedance instrument standard signal output circuit, a manual comparison circuit, and a second serial port communication circuit. The manual comparison circuit reuses the measurement function of the embedded instrument detection module, connects the acquisition device under test and the identification equipment to the same instrument under test, synchronously acquires signals and transmits them to the central control unit through the second serial port communication circuit to realize the comparison of measured values.

[0009] Furthermore, the vibrating string frequency standard signal output circuit includes a DDS chip, a power amplifier, and an isolator, used to generate and output a series of waveform signals of known frequencies as a reference standard for detecting the frequency measurement function of the embedded vibrating string instrument under test.

[0010] Furthermore, the standard signal output circuit of the differential resistance instrument includes a decoder, multiple sets of relays and a precision resistor array. The central control unit controls the relays to switch on and off through the decoder, switches different resistor combinations, and outputs a standard signal with known resistance and resistance ratio.

[0011] Furthermore, the insulation resistance detection module includes a passive control switch, an insulation detection module, and a third serial communication circuit.

[0012] Furthermore, it also includes an identification equipment control module, which is used to ensure the overall operational stability of the equipment and provides power management, status indication, environmental monitoring, wireless communication and data storage functions.

[0013] Furthermore, the identification equipment control module includes: The power management circuit is used to provide a stable and compatible operating voltage for the entire testing equipment and to manage the charging and discharging of the battery. Operating status indicator circuit, used to visually display the operating status of the device's power supply and communication; The environmental sampling circuit is used to collect temperature and humidity data of the device's operating environment, providing environmental parameters for correcting the detection data; Bluetooth-serial communication circuit, used to enable wireless Bluetooth data interaction between the device and external terminals; The storage circuit is used to back up and store various types of data during the testing process.

[0014] Furthermore, the power management circuit includes a battery interface, a charge / discharge management circuit, and a power conversion circuit, used to connect to an external power source and convert it to 12V, 5V, -5V, and 3.3V voltages to power the system.

[0015] Furthermore, the intelligent interactive device is an industrial touch screen display screen with a built-in control program for data processing and identification result generation.

[0016] The present invention can achieve the following beneficial effects: 1. The identification equipment proposed in this application can improve the efficiency of identification work, reducing the detection time of a single 16-channel MCU device and monitoring instrument from 40 minutes to eight minutes; at the same time, it will reduce the weight carried by staff when traveling, requiring staff to carry only one identification device, thereby replacing at least five devices such as vibrating wire reader, differential resistance reader, insulation resistance meter, resistance box, and bridge calibrator.

[0017] 2. The identification equipment used in this application can reduce the probability of errors in manual data entry. The automated data entry of this equipment avoids errors in manual recording.

[0018] 3. The detection data compilation algorithm embedded in the human-interactive device of the identification equipment of this application can automatically evaluate and output the stability evaluation and measurement reliability evaluation results of the instrument based on the test data according to the proposed evaluation rules, and can export reports according to the compilation requirements without relying on professional personnel for evaluation and analysis. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1This is a structural schematic diagram of an identification device for a dam-embedded monitoring instrument and data acquisition device according to the present invention. Figure 2 This is a schematic diagram of the embedded instrument detection module of this utility model; Figure 3 This is a schematic diagram of the detection module of the data acquisition device of this utility model; Figure 4 This is a schematic diagram of the insulation resistance detection module of this utility model.

[0020] The attached diagram lists the components represented by each number as follows: 1. Central control unit; 2. Embedded instrument detection module; 21. Channel switching circuit; 22. Channel multiplexing circuit; 23. Vibrating string instrument acquisition circuit; 24. Differential resistance instrument acquisition circuit; 25. First serial communication circuit; 3. Acquisition device detection module; 31. Vibrating string frequency standard signal output circuit; 32. Differential resistance instrument standard signal output circuit; 33. Manual comparison circuit; 34. Second serial communication circuit; 4. Insulation resistance detection module; 41. Passive control switch; 42. Insulation detection module; 43. Third serial communication circuit; 5. Identification equipment control module; 6. Intelligent interactive device. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0022] like Figures 1 to 4 As shown, a diagnostic device for dam embedded monitoring instruments and data acquisition devices includes a central control unit 1, an embedded instrument detection module 2, a data acquisition device detection module 3, an insulation resistance detection module 4, a diagnostic device control module 5, and an intelligent interactive device 6. The central control unit 1 serves as the core of the entire device, exchanging information with each module and the intelligent interactive device 6.

[0023] The embedded instrument testing module 2 performs stability testing on embedded vibrating wire instruments and differential resistance instruments. The embedded instrument testing module 2 includes a channel switching circuit 21 and a channel multiplexing circuit 22 connected in series. The end of the channel multiplexing circuit 22 is connected in parallel to the vibrating wire instrument acquisition circuit 23 and the differential resistance instrument acquisition circuit 24. The ends of the vibrating wire instrument acquisition circuit 23 and the differential resistance instrument acquisition circuit 24 are connected to a first serial communication circuit 25.

[0024] The channel switching circuit 21 includes eight relays, which are controlled by the central control unit 1 to selectively connect eight embedded instruments under test. This supports independent single-channel testing or multi-channel polling testing, solving the cumbersome wiring problem associated with simultaneous testing of multiple instruments. The channel multiplexing circuit 22 multiplexes the eight detection signals onto a single transmission link, reducing the number of hardware lines, minimizing signal interference, and ensuring stability during parallel data acquisition from multiple channels. The vibrating wire instrument acquisition circuit 23 applies an excitation signal to the vibrating wire instrument to cause it to vibrate, simultaneously acquiring the vibration frequency and converting it into a digital signal for analyzing the long-term stability of the instrument. The differential resistance instrument acquisition circuit 24 outputs a constant current to the differential resistance instrument, acquiring its resistance and resistance ratio analog signals and digitizing them as raw data for stability evaluation.

[0025] Under the control of the central control unit 1, the module connects the channel switching circuit 21, the channel multiplexing circuit 22, the vibrating wire instrument acquisition circuit 23, and the differential resistance instrument acquisition circuit 24, and transmits the data to the intelligent interactive device 6 through the first serial communication circuit 25. This module can simultaneously connect to eight channels of embedded vibrating wire instruments or differential resistance instruments, realize the acquisition of multiple sets of subsequence data on site, and then carry out measurement stability evaluation.

[0026] The data acquisition device detection module 3 verifies the measurement accuracy of embedded vibrating wire instruments and differential resistance instruments. The data acquisition device detection module 3 includes a vibrating wire frequency standard signal output circuit 31, a differential resistance instrument standard signal output circuit 32, a manual comparison circuit 33, and a second serial communication circuit 34. Under the control of the central control unit 1, it connects the vibrating wire frequency standard signal output circuit 31, the differential resistance instrument standard signal output circuit 32, and the manual comparison circuit 33, and transmits the detection data to the intelligent interactive device 6 via the second serial communication circuit 34.

[0027] The vibrating string frequency standard signal output circuit 31 uses a series of waveform signals with known frequencies generated and output as a reference standard to test the accuracy of the frequency measurement function of the embedded vibrating string instrument. This circuit includes a DDS chip, a power amplifier, and an isolator, and can output standard frequency signals with selectable sine or square waves with frequencies ranging from 400Hz to 6000Hz and amplitudes from 10mV to 5V.

[0028] The differential resistance instrument standard signal output circuit 32 uses a series of resistors connected in series with known sums and ratios as a reference standard to test the accuracy of the resistance sum and ratio measurements of the differential resistance instrument. The differential resistance instrument standard signal output circuit 32 includes a decoder, multiple sets of relays, and a precision resistor array. The central control unit 1 controls the relays to switch between different resistance combinations via the decoder, outputting a standard signal with known sums and ratios. This signal is then connected to the device under test, and the accuracy of the resistance measurement is determined by comparing the deviation between the measured value and the standard value. In this embodiment, the selected standard resistor array combinations are: Group 1: 10Ω, 10Ω; Group 2: 20Ω, 20Ω; Group 3: 30Ω, 30Ω; Group 4: 40Ω, 40Ω; Group 5: 50Ω, 50Ω; Group 6: 60Ω, 60Ω; Group 7: 40Ω, 50Ω; Group 8: 45Ω, 50Ω; Group 9: 45Ω, 48Ω; and Group 10: 39Ω, 40Ω. These combinations cover six resistors and ranges from 20Ω to 220Ω, and nine resistance ratio ranges from 0.8000 to 1.2000. All resistors are selected as high-precision military-grade resistors with a low-temperature drift of no more than 5ppm to ensure the long-term stability of this circuit.

[0029] The manual comparison circuit 33 reuses the measurement function of the embedded instrument detection module 2, connects the acquisition device under test and the identification device to the same instrument under test, synchronously acquires signals and transmits them to the central control unit 1 through the second serial communication circuit 34 to realize the comparison of measured values; when the communication protocol is supported, the comparison can be completed automatically without manual intervention.

[0030] The insulation resistance detection module 4 is used to detect the insulation properties of embedded vibrating wire instruments and differential resistance instruments. The insulation resistance detection module 4 includes a passive control switch 41, an insulation detection module 42, and a third serial communication circuit 43. The passive control switch 41 uses an optocoupler to achieve contactless control, avoiding interference with the instrument signal, and is only closed during detection. The insulation detection module 42 has a built-in high-voltage DC power supply and a precision ohmmeter, which measures the insulation resistance value after applying high voltage to the instrument. The microprocessor of the central control unit 1 controls the on / off state of the passive control switch 41, enabling the use and control of the integrated insulation detection module 42. The insulation measurement signal collected by the insulation detection module 42 is then acquired via the third serial communication circuit 43.

[0031] The identification equipment control module 5 includes a power management circuit, a working status indicator circuit, an environmental sampling circuit, a Bluetooth-serial communication circuit, and a storage circuit. The power management circuit includes a battery interface, a charge / discharge management circuit, and a power conversion circuit, generating various power supplies such as 12V, 5V, -5V, and 3.3V for system operation. The working status indicator circuit uses indicator lights of different colors to indicate the working status of various power supplies and communication connection status. The environmental sampling circuit includes a temperature and humidity sampling chip and an I2C communication interface to indicate the current temperature and humidity of the equipment's operating environment. The Bluetooth-serial communication circuit includes a BLE Bluetooth module and a fourth serial communication interface to enable wireless Bluetooth interaction between peripherals and the equipment. The storage circuit includes an SD card storage driver circuit and an SPI communication interface to back up and store identification test data.

[0032] The intelligent interactive device 6 employs an industrial intelligent touchscreen display with a built-in ARM multi-core processor and a built-in intelligent operating system. The central control unit 1 communicates with the touchscreen via the USB serial port through the fourth serial communication interface, and is integrated with a developed evaluation app. This app is used to set testing parameters, receive and display stability test data, accuracy test data, and insulation resistance measurements. Based on preset evaluation rules, it automatically analyzes and processes the received data, generating and outputting evaluation results for the embedded monitoring instrument and acquisition device. This enables functions such as instrument signal acquisition, insulation detection, standard signal simulation, manual comparison testing, data compilation and analysis, and data report generation.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dam embedded monitoring instrument and acquisition device authentication apparatus, characterized by, include: Central control unit (1); The embedded instrument testing module (2) is electrically connected to the central control unit (1) and is used to connect the embedded monitoring instrument to be tested and to perform stability testing on the embedded monitoring instrument to obtain stability test data. The acquisition device detection module (3) is electrically connected to the central control unit (1) and is used to connect the acquisition device to be tested and to detect the measurement accuracy of the acquisition device to obtain accuracy test data. The insulation resistance detection module (4) is electrically connected to the central control unit (1) and is used to perform insulation detection on the embedded monitoring instrument to obtain the insulation resistance measurement value. The intelligent interactive device (6) is connected to the central control unit (1) for setting detection parameters, receiving and displaying stability test data, accuracy test data and insulation resistance measurement values, and automatically analyzing and processing the received data based on preset identification and evaluation rules to generate and output the identification results of the embedded monitoring instrument and acquisition device.

2. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 1, characterized in that: The embedded instrument detection module (2) includes a channel switching circuit (21) and a channel multiplexing circuit (22) connected in series. The end of the channel multiplexing circuit (22) is connected in parallel to a vibrating wire instrument acquisition circuit (23) and a differential resistance instrument acquisition circuit (24). The ends of the vibrating wire instrument acquisition circuit (23) and the differential resistance instrument acquisition circuit (24) are connected to a first serial communication circuit (25).

3. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 1, characterized in that: The acquisition device detection module (3) includes a vibrating wire frequency standard signal output circuit (31), a differential impedance instrument standard signal output circuit (32), a manual comparison circuit (33), and a second serial port communication circuit (34). The manual comparison circuit (33) reuses the measurement function of the embedded instrument detection module (2), connects the acquisition device to be tested and the identification device to the same instrument, synchronously collects signals and transmits them to the central control unit (1) through the second serial communication circuit (34) to realize the comparison of measured values.

4. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 3, characterized in that: The vibrating string frequency standard signal output circuit (31) includes a DDS chip, a power amplifier and an isolator, used to generate and output a series of waveform signals of known frequencies as a reference standard for detecting the frequency measurement function of the embedded vibrating string instrument under test.

5. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 3, characterized in that: The differential resistance instrument standard signal output circuit (32) includes a decoder, multiple sets of relays and a precision resistor array. The central control unit (1) controls the relays to switch on and off through the decoder, switches different resistor combinations, and outputs a standard signal with known resistance and resistance ratio.

6. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 1, characterized in that: The insulation resistance detection module (4) includes a passive control switch (41), an insulation detection module (42), and a third serial communication circuit (43).

7. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 1, characterized in that: It also includes an identification equipment control module (5), which is used to ensure the overall operational stability of the equipment and provides power management, status indication, environmental monitoring, wireless communication and data storage functions.

8. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 7, characterized in that: The identification equipment control module (5) includes: The power management circuit is used to provide a stable and compatible operating voltage for the entire testing equipment and to manage the charging and discharging of the battery. Operating status indicator circuit, used to visually display the operating status of the device's power supply and communication; The environmental sampling circuit is used to collect temperature and humidity data of the device's operating environment, providing environmental parameters for correcting the detection data; Bluetooth-serial communication circuit, used to enable wireless Bluetooth data interaction between the device and external terminals; The storage circuit is used to back up and store various types of data during the testing process.

9. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 8, characterized in that: The power management circuit includes a battery interface, a charge / discharge management circuit, and a power conversion circuit, used to connect to an external power source and convert it to 12V, 5V, -5V, and 3.3V voltages to power the system.

10. The identification equipment for a dam embedded monitoring instrument and data acquisition device according to claim 1, characterized in that: The intelligent interactive device (6) is an industrial touch screen with a built-in control program for data processing and identification result generation.

Images