Evaluation device for monitoring instruments and recording devices installed in dams

Abstract

Evaluation device for monitoring instruments and recording devices installed in dams, characterized in that it comprises the following: a central control unit (1); a built-in instrument detection module (2) which is electrically connected to the central control unit (1) and configured to establish a connection with a built-in monitoring instrument under test and to perform stability tests on the built-in monitoring instrument in order to obtain stability test data; a detection device detection module (3) which is electrically connected to the central control unit (1) and configured to establish a connection with a detection device under test and to perform measurement accuracy tests on the detection device in order to obtain accuracy test data; an insulation resistance detection module (4) which is electrically connected to the central control unit (1) and configured to perform insulation tests on the built-in monitoring instrument to obtain insulation resistance values; an intelligent interaction device (6) that is bidirectionally communicatively connected to the central control unit (1) to set the test parameters, receive and display the stability test data, accuracy test data and insulation resistance measurements, and perform an automated analysis on the received data based on the preset evaluation rules, thereby generating and outputting evaluation results for a built-in monitoring instrument and a detection device.

Description

TECHNICAL AREA

[0001] The present utility model relates to the technical field of safety monitoring in hydraulic engineering, in particular an evaluation device for monitoring instruments and detection devices installed in dams. STATE OF THE ART

[0002] Devices for monitoring dam safety differ considerably depending on their measuring principle. Currently, built-in vibrating wire resistance meters and differential resistance meters are primarily used for internal dam monitoring. Manual measuring devices and automatic data acquisition systems serve as data acquisition tools, both for manual and automatic data collection, respectively.

[0003] Built-in instruments are installed during the construction phase. Over extended periods of operation, these instruments are exposed to internal and external factors such as component aging, reduced insulation performance, and high-pressure permeability of the sensor elements, inevitably leading to partial performance degradation or failure. Simultaneously, automated data acquisition devices within monitoring systems that operate continuously for years face stability issues due to complex project power supply networks and the limited lifespan of internal circuitry. Against this backdrop, dam monitoring systems are regularly inspected on-site to accurately determine the real-time performance and operational status of the monitoring instruments and automated data acquisition devices.

[0004] Current assessments of dam safety monitoring systems face the following challenges: regarding assessment equipment, assessment personnel must carry multiple measuring instruments, multimeters, insulation resistance testers, and other tools for on-site testing, resulting in inconvenient portability, cumbersome cabling, and low efficiency; regarding the recording of assessment data, dams vary in size and have dozens to tens of thousands of monitoring instruments, as well as several to hundreds of automated data acquisition devices, and depending on the subject of the assessment and the type of equipment, assessment personnel must record various types of data information from the equipment on-site in more than ten different forms, resulting in a significant volume of data and a high susceptibility to errors;Regarding the analysis of the assessment results, the assessment personnel must perform reliability analyses on the various measurements recorded on site. Furthermore, specialists must compare historical data to evaluate the instruments, but there is a lack of standardized algorithmic tools. Consequently, this process is highly dependent on the expertise of the assessment personnel and simultaneously carries a significant subjective risk. CONTENTS OF THE PRESENT USE SAMPLE

[0005] The present utility model provides special equipment for the evaluation of monitoring instruments and their detection devices installed in dams, in order to solve the problems of complexity, cumbersomeness and low accuracy in carrying out evaluations for a dam safety monitoring system.

[0006] To achieve the aforementioned purpose, the present utility model uses the following technical solution: Evaluation device for monitoring instruments and recording devices installed in dams, comprising the following: a central control unit; a built-in instrument detection module that is electrically connected to the central control unit and configured to establish a connection with a built-in monitoring instrument under test and to perform stability tests on the built-in monitoring instrument in order to obtain stability test data; a sensing device detection module that is electrically connected to the central control unit and configured to establish a connection with a sensing device under test and perform measurement accuracy tests on the sensing device to obtain accuracy test data; an insulation resistance detection module that is electrically connected to the central control unit and configured to perform insulation tests on the built-in monitoring instrument to obtain insulation resistance values; An intelligent interaction device that is bidirectionally communicatively connected to the central control unit to set the test parameters, receive and display the stability test data, accuracy test data and insulation resistance measurements, and perform an automated analysis on the received data based on the preset evaluation rules, thereby generating and outputting evaluation results for a built-in monitoring instrument and a data acquisition device.

[0007] Furthermore, the built-in instrument detection module comprises a channel switching circuit and a signal channel multiplexing circuit, wherein the signal output end of the channel switching circuit is connected in series with the signal input end of the signal channel multiplexing circuit; and wherein one end of the signal channel multiplexing circuit is connected in parallel with a vibrating wire instrument detection circuit and a differential resistance instrument detection circuit, and wherein the signal output ends of the vibrating wire instrument detection circuit and the differential resistance instrument detection circuit are jointly connected in series with a first serial interface communication circuit, and wherein the signal output end of the first serial interface communication circuit is electrically connected to the central control unit.

[0008] Furthermore, wherein the channel switching circuit comprises 8 relays, wherein the signal input ends of the channel switching circuit correspond to 8 instrument access interfaces; and wherein the switching of the operating mode of the signal output end of the signal channel multiplex circuit is controlled by the central control unit.

[0009] Furthermore, the detection device detection module includes a vibrating wire frequency standard signal output circuit, a differential resistance instrument standard signal output circuit, a manual comparison circuit, and a second serial interface communication circuit. wherein the control signal input ends of the oscillating wire frequency standard signal output circuit, the differential resistance instrument standard signal output circuit and the manual comparator circuit are each connected in parallel to the signal output end of the central control unit, and wherein the comparator signal output end of the manual comparator circuit is connected in series to the signal input end of the second serial interface communication circuit.

[0010] Furthermore, the insulation resistance detection module comprises a passive control switch, an insulation detection module, and a third serial interface communication circuit, wherein the control signal input end of the passive control switch is connected in series with the signal output end of the central control unit, and wherein the main circuit output end of the passive control switch is connected in series with the signal input end of the insulation detection module, and wherein the detection signal output end of the insulation detection module is connected in series with the signal input end of the third serial interface communication circuit, and wherein the signal output end of the third serial interface communication circuit is connected to the signal receiving end of the central control unit.

[0011] Furthermore, the evaluation device continues to include an evaluation device compound control module, which includes the following: a power supply management circuit, wherein the power output end of the power supply management circuit is connected in parallel to the power input ends of the central control unit, the built-in instrument detection module, the detection device detection module, the insulation resistance detection module, and the intelligent interaction device; an operating status indicator circuit, wherein the control signal input end of the operating status indicator circuit is connected in series with the status output end of the central control unit; an environment scanning circuit, wherein the data output end of the environment scanning circuit is connected in series with the environment data receiving end of the central control unit; a Bluetooth serial interface communication circuit and a memory circuit, wherein the signal interaction ends of the Bluetooth serial interface communication circuit and the memory circuit are each connected to the central control unit.

[0012] Furthermore, the intelligent interaction device is an industrial touchscreen that has an integrated control program for data processing and the generation of evaluation results.

[0013] The present utility model can achieve the following advantageous effects: 1. The evaluation device of the present application increases efficiency and reduces the testing time for a single 16-channel MCU device and a monitoring instrument from 40 minutes to 8 minutes; it also relieves the burden on personnel during on-site work, as the personnel only need to carry one evaluation device, which replaces at least 5 separate instruments, including vibrating wire indicators, differential resistance indicators, insulation resistance meters, resistance boxes and bridge calibrators; 2. The use of the evaluation device of the present application reduces the probability of errors in manual data entry, since automated data entry eliminates errors in manual recording; 3. The data acquisition and compilation algorithm integrated into the human-machine interface of the evaluation device of the present application evaluates and automatically outputs the results of the instrument stability assessment and the measurement reliability assessment based on defined evaluation criteria and test data, and reports can be exported according to the defined compilation requirements, thereby eliminating the dependence on expert assessments and analyses. BRIEF DESCRIPTION OF THE DRAWING

[0014] The present utility model is explained in more detail below in connection with the attached drawings and examples of embodiment. Fig. Figure 1 shows a schematic diagram of the structure of an evaluation device for monitoring instruments and recording devices installed in dams according to the present utility model. Fig. Figure 2 shows a schematic diagram of the structure of a built-in instrument recognition module according to the present utility model. Fig. Figure 3 shows a schematic diagram of the structure of a detection device recognition module according to the present utility model. Fig. Figure 4 shows a schematic diagram of the structure of an insulation resistance detection module according to the present utility model.

[0015] The components represented by reference numbers in the drawings are listed as follows: 1 Central control unit 2 Built-in instrument recognition module 21 Channel switching circuit 22 Signal channel multiplexing circuit 23 Swing wire instrument detection circuit 24 Differential resistance instrument detection circuit 25 First serial interface communication circuit 26 8-channel access ports for monitoring instruments 3 Detection Device Recognition Module 31 Swing wire frequency standard signal output circuit 32 Differential resistance instrument standard signal output circuit 33 Manual comparison circuit 34 Second serial interface communication circuit 35 Tested detection devices 4 Insulation resistance detection module 41 Passive control switch 42 Insulation detection module 43 Third serial interface communication circuit 5 Evaluation Device Compound Control Module 51 Power supply management circuit 52 Operating status indicator circuit 53 Ambient scanning circuit 54 Bluetooth serial interface communication circuit 55 Memory circuit 6 Intelligent Interaction Device DETAILED DESCRIPTION

[0016] In connection with the attached drawings in the preferred embodiments, the technical solution in the embodiments of the present application is explained in more detail below, so that the purpose, the technical solution and the advantages of the present application become clearer.

[0017] The embodiments of the present application are explained in more detail below in connection with the attached drawings.

[0018] As in Fig.As shown in Figures 1 to 4, an evaluation device for monitoring instruments and detection devices installed in dams comprises a central control unit 1, an integrated instrument detection module 2, a detection device detection module 3, an insulation resistance detection module 4, an evaluation device composite control module 5, and an intelligent interaction device 6. The central control unit 1 serves as the core of the entire equipment and enables the exchange of information with all modules and the intelligent interaction device 6.

[0019] The built-in instrument detection module 2 is electrically connected to the central control unit 1 and configured to establish a connection with a built-in monitoring instrument under test and to perform stability tests on the built-in monitoring instrument in order to obtain stability test data, thereby enabling verification of the stability of a built-in vibrating wire instrument and differential resistance instrument.The built-in instrument detection module 2 comprises a channel switching circuit and a signal channel multiplex circuit 22 connected in series, one end of the signal channel multiplex circuit 22 being connected in parallel to a vibrating wire instrument detection circuit 23 and a differential resistance instrument detection circuit 24, and the signal output ends of the vibrating wire instrument detection circuit 23 and the differential resistance instrument detection circuit 24 being connected together in series to a first serial interface communication circuit 25, and the signal output end of the first serial interface communication circuit 25 being electrically connected to the central control unit 1.

[0020] The channel switching circuit 21 comprises 8 relays whose signal input terminals are configured as 8-channel access ports 26 for monitoring instruments. These relays are controlled by the central control unit 1 and enable the selective connection of the 8 embedded instruments under test. This supports either independent single-channel detection or multi-channel polling detection, thus resolving the complex wiring problems associated with the simultaneous testing of multiple instruments. The signal channel multiplexing circuit 22 multiplexes the 8 detection signals onto a single transmission link, thereby reducing the complexity of the hardware wiring and minimizing signal interference to ensure stability during parallel multi-channel data acquisition. The operating mode of the signal output terminals of the signal channel multiplexing circuit 22 is switched under the control of the central control unit 1.The vibrating wire instrument acquisition circuit 23 applies excitation signals to the vibrating wire instrument to induce vibrations and simultaneously records the vibration frequency and converts it into digital signals to analyze the long-term stability of the instrument; the differential resistance instrument acquisition circuit 24 supplies the differential resistance instrument with a constant current and acquires analog signals representing its total resistance and resistance ratio for digitization, which serves as raw data for stability assessment.

[0021] Under the control of the central control unit 1, the channel switching circuit 21, the signal channel multiplexing circuit 22, the vibrating wire instrument acquisition circuit 23, and the differential resistance instrument acquisition circuit 24 are interconnected. The data is transmitted to the intelligent interaction device 6 via the first serial interface communication circuit 25. This module allows the simultaneous connection of a built-in multi-channel vibrating wire instrument or a multi-channel differential resistance instrument, thus facilitating the acquisition of multiple sets of sequential data on-site for subsequent evaluation of the stability of the measurement data.

[0022] The sensing device detection module 3 is electrically connected to the central control unit 1 and configured to establish a connection with a tested sensing device 35 and perform its measurement accuracy tests to obtain accuracy test data, thereby verifying the measurement accuracy of a built-in vibrating wire instrument and differential resistance instrument.

[0023] The detection device recognition module 3 comprises a oscillating wire frequency standard signal output circuit 31, a differential resistance instrument standard signal output circuit 32, a manual comparator circuit 33, and a second serial interface communication circuit 34, wherein the control signal input ends of the oscillating wire frequency standard signal output circuit 31, the differential resistance instrument standard signal output circuit 32, and the manual comparator circuit 33 are each connected in parallel to the signal output end of the central control unit 1, and wherein the comparator signal output end of the manual comparator circuit 33 is connected in series with the signal input end of the second serial interface communication circuit 34.Under the control of the central control unit 1, the oscillating wire frequency standard signal output circuit 31, the differential resistance instrument standard signal output circuit 32 and the manual comparison circuit 33 are interconnected, with the acquisition data being transmitted to the intelligent interaction device 6 via the second serial interface communication circuit 34.

[0024] In particular, the oscillating wire frequency standard signal output circuit 31 uses a series of generated and output waveform signals with known frequencies as a reference standard to verify the accuracy of the frequency measurement functions of the built-in oscillating wire instrument. The differential resistance instrument standard signal output circuit 32 uses a series of resistive loads with known total resistances and resistance ratios as a reference standard to verify the accuracy of the total resistance and resistance ratio measurements in the differential resistance instrument.The manual comparison circuit 33 multiplexes the measurement function of the built-in instrument recognition module 2, connects the detection device under test and the evaluation device to the same instrument under test, synchronously acquires the signals and transmits them via the second serial interface communication circuit 34 to the central control unit 1 to perform a measurement comparison; whereby, if communication protocols are supported, comparisons can be performed automatically without manual intervention.

[0025] The insulation resistance detection module 4 is electrically connected to the central control unit 1 and configured to perform insulation tests on the built-in monitoring instrument to obtain insulation resistance values, thereby enabling verification of the insulation of a built-in vibrating wire instrument and differential resistance instrument.The insulation resistance detection module 4 comprises a passive control switch 41, an insulation detection module 42, and a third serial interface communication circuit 43, wherein the control signal input end of the passive control switch 41 is connected in series with the signal output end of the central control unit 1, and wherein the main circuit output end of the passive control switch 41 is connected in series with the signal input end of the insulation detection module 42, and wherein the detection signal output end of the insulation detection module 42 is connected in series with the signal input end of the third serial interface communication circuit 43, and wherein the signal output end of the third serial interface communication circuit 43 is connected to the signal receiving end of the central control unit 1.

[0026] The passive control switch 41 uses an optocoupler to achieve contactless control, thus avoiding interference with the device signals and ensuring the switch is only closed during detection. The insulation detection module 42 is internally equipped with a high-voltage DC power supply and a precision resistance meter to measure the insulation resistance values ​​after a high voltage is applied to the device. The microprocessor in the central control unit 1 controls the activation and deactivation of the passive control switch 41, thereby enabling the operation and control of the integrated insulation detection module 42. The insulation measurement signal acquired by the insulation detection module 42 is then received via the third serial interface communication circuit 43.

[0027] The evaluation device compound control module 5 includes a power supply management circuit 51, an operating status indicator circuit 52, an environment sampling circuit 53, a Bluetooth serial interface communication circuit 54 and a memory circuit 55.The power output end of the power supply management circuit 51 is connected in parallel to the power input ends of the central control unit 1, the built-in instrument detection module 2, the detection device detection module 3, the insulation resistance detection module 4, and the intelligent interaction device 6; wherein the control signal input end of the operating status indicator circuit 52 is connected in series with the status output end of the central control unit 1; and wherein the data output end of the environmental sensing circuit 53 is connected in series with the environmental data receiving end of the central control unit 1; and wherein the signal interaction ends of the Bluetooth serial interface communication circuit 54 and the memory circuit 55 are each connected to the central control unit 1.

[0028] The power supply management circuit 51 generates various power supplies for system operation, including 12 V, 5 V, -5 V, and 3.3 V. The operating status indicator circuit 52 uses multi-colored indicator lights to show the operating status of each power supply and the communication link status. The environmental sensing circuit 53 displays the current temperature and humidity conditions of the device's operating environment. The Bluetooth serial interface communication circuit 54 enables wireless Bluetooth interaction between peripheral devices and the equipment. The memory circuit 55 facilitates the backup of evaluation test data.

[0029] The intelligent interaction device 6 features an industrial smart touchscreen with an embedded ARM multicore processor and an embedded intelligent operating system. The central control unit 1 communicates with the touchscreen's USB-to-serial port via the fourth serial communication interface and uses a dedicated evaluation application to set test parameters, receive and display stability test data, accuracy test data, and insulation resistance measurements. Based on preset evaluation rules, it performs automated analysis of the received data, generating and outputting evaluation results for a built-in monitoring instrument and acquisition device. Consequently, functions such as instrument signal acquisition, insulation testing, standard signal simulations, and manual comparison tests are enabled.Data compilation and analysis, as well as the creation of reports, have been achieved.

[0030] The foregoing content is a detailed explanation of the present utility model in connection with preferred embodiments. However, the utility model is not limited to the described embodiments. All modifications, equivalent replacements, and improvements carried out in accordance with the ideas and principles of the present utility model shall be deemed to be covered by the scope of protection of the present utility model.

Claims

[1] Evaluation device for monitoring instruments and recording devices installed in dams, characterized by , that it includes the following: a central control unit (1); a built-in instrument detection module (2) which is electrically connected to the central control unit (1) and configured to establish a connection with a built-in monitoring instrument under test and to perform stability tests on the built-in monitoring instrument in order to obtain stability test data; a detection device detection module (3) which is electrically connected to the central control unit (1) and configured to establish a connection with a detection device under test and to perform measurement accuracy tests on the detection device in order to obtain accuracy test data; an insulation resistance detection module (4) which is electrically connected to the central control unit (1) and configured to perform insulation tests on the built-in monitoring instrument to obtain insulation resistance values; an intelligent interaction device (6) that is bidirectionally communicatively connected to the central control unit (1) to set the test parameters, receive and display the stability test data, accuracy test data and insulation resistance measurements, and perform an automated analysis on the received data based on the preset evaluation rules, thereby generating and outputting evaluation results for a built-in monitoring instrument and a detection device. [2] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 1, characterized by, that the built-in instrument detection module (2) comprises a channel switching circuit (21) and a signal channel multiplex circuit (22), wherein the signal output end of the channel switching circuit (21) is connected in series with the signal input end of the signal channel multiplex circuit (22); and wherein one end of the signal channel multiplex circuit (22) is connected in parallel with a vibrating wire instrument detection circuit (23) and a differential resistance instrument detection circuit (24), and wherein the signal output ends of the vibrating wire instrument detection circuit (23) and the differential resistance instrument detection circuit (24) are jointly connected in series with a first serial interface communication circuit (25), and wherein the signal output end of the first serial interface communication circuit (25) is electrically connected to the central control unit (1). [3] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 2, characterized by , wherein the channel switching circuit (21) comprises 8 relays, wherein the signal input ends of the channel switching circuit correspond to 8 instrument access interfaces; and wherein the switching of the operating mode of the signal output end of the signal channel multiplex circuit (22) is controlled by the central control unit (1). [4] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 1, characterized by , that the detection device detection module (3) comprises 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 interface communication circuit (34), wherein the control signal input ends of the oscillating wire frequency standard signal output circuit (31), the differential resistance instrument standard signal output circuit (32) and the manual comparator circuit (33) are each connected in parallel to the signal output end of the central control unit (1), and wherein the comparator signal output end of the manual comparator circuit (33) is connected in series to the signal input end of the second serial interface communication circuit (34). [5] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 1, characterized by, that the insulation resistance detection module (4) comprises a passive control switch (41), an insulation detection module (42) and a third serial interface communication circuit (43), wherein the control signal input end of the passive control switch (41) is connected in series with the signal output end of the central control unit (1), and wherein the main circuit output end of the passive control switch (41) is connected in series with the signal input end of the insulation detection module (42), and wherein the detection signal output end of the insulation detection module (42) is connected in series with the signal input end of the third serial interface communication circuit (43), and wherein the signal output end of the third serial interface communication circuit (43) is connected to the signal receiving end of the central control unit (1). [6] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 1, characterized by , that the evaluation device further comprises an evaluation device compound control module (5) which includes the following: a power supply management circuit (51) wherein the power output end of the power supply management circuit (51) is connected in parallel to the power input ends of the central control unit (1), the built-in instrument detection module (2), the detection device detection module (3), the insulation resistance detection module (4) and the intelligent interaction device (6); an operating status indicator circuit (52), wherein the control signal input end of the operating status indicator circuit (52) is connected in series with the status output end of the central control unit (1); an environment scanning circuit (53), wherein the data output end of the environment scanning circuit (53) is connected in series with the environment data receiving end of the central control unit (1); a Bluetooth serial interface communication circuit (54) and a memory circuit (55), wherein the signal interaction ends of the Bluetooth serial interface communication circuit (54) and the memory circuit (55) are each connected to the central control unit (1). [7] Evaluation device for monitoring instruments and detection devices installed in dams according to claim 1, characterized by , that the intelligent interaction device (6) is an industrial touchscreen that has an integrated control program for data processing and the generation of evaluation results.

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