A combined sensor for measuring the level, density, temperature and bottom of a liquid

Abstract

The application provides a comprehensive sensor for measuring liquid level, density, temperature and liquid bottom, relates to the technical field of liquid measurement and comprises a structure assembly and an electronic measurement module assembly; the structure assembly comprises a retractor and a motor; the electronic measurement module assembly comprises a master control unit, an encoder and a measurement probe; the measurement probe is installed inside an oil tank, the structure assembly and the electronic measurement module assembly are respectively installed in a shell, the motor is connected with the retractor, a steel wire rope on the retractor is connected with the measurement probe, the encoder is connected with the retractor, and the master control unit is connected with the encoder and the motor. The application reduces environmental factor interference, ensures measurement stability, optimizes performance, simplifies structure design, improves the convenience of liquid level measurement, realizes automatic and accurate measurement of the fuel liquid level, the tank bottom water level, the fuel temperature and the density in the oil storage tank, and significantly improves the measurement accuracy, the equipment reliability and the operation safety.

Description

Technical Field

[0001] This invention relates to the field of liquid measurement technology, and in particular to a comprehensive sensor for measuring liquid level, density, temperature and bottom of liquid. Background Technology

[0002] Currently, the detection of oil parameters in underground oil storage tanks at gas stations in China is still mainly done manually. Operators need to use simple dipsticks (steel tape measures) and measuring cups to manually measure liquid level, water level, temperature and density. This is not only inefficient and labor-intensive, but the measurement results are also easily affected by human factors, making it difficult to guarantee accuracy and reliability.

[0003] Moreover, existing integrated measurement solutions, which involve adding an ultrasonic level sensor and a capacitive water level probe to the end of the dipstick and connecting them to the control module via a cable, trigger an audible and visual signal when the probe touches the oil surface or oil-water interface, assisting the operator in reading data through the scale. However, these devices still have significant shortcomings: on the one hand, their function is limited to liquid level and water level detection and cannot achieve density measurement; on the other hand, they are costly, and the sensors corresponding to the integrated measurement solutions require manual operation for raising and lowering, and the readings rely on manual interpretation, which is prone to introducing errors. Ultrasonic measurements are significantly affected by ambient temperature fluctuations, greatly reducing the measurement effect on liquids.

[0004] Therefore, in order to overcome the above-mentioned defects, the present invention provides a comprehensive sensor for measuring liquid level, density, temperature and bottom of liquid. Summary of the Invention

[0005] This invention provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom depth. Through high-precision sensors and intelligent algorithms, it effectively reduces indirect errors, significantly improves data accuracy, reduces environmental interference, ensures measurement stability, and simplifies structural design while optimizing performance. This enhances the convenience of liquid level measurement and enables automatic and accurate measurement of fuel level, bottom water level, fuel temperature, and density in oil storage tanks, significantly improving measurement accuracy, equipment reliability, and operational safety.

[0006] This invention provides a comprehensive sensor for measuring the liquid level, density, temperature, and bottom of a liquid, comprising:

[0007] Structural assembly and electronic measurement module assembly;

[0008] The structural assembly includes a take-up and a take-down unit and a motor;

[0009] The electronic measurement module assembly includes a main control unit, an encoder, and a measurement probe;

[0010] The measuring probe is installed inside the oil tank. The structural assembly and the electronic measuring module assembly are respectively installed in the housing. The motor is connected to the take-up and take-down device. The steel wire rope on the take-up and take-down device is connected to the measuring probe. The encoder is connected to the take-up and take-down device. The main control unit is connected to the encoder and the motor respectively.

[0011] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0012] The receiver is directly connected to the motor, and the receiver rotates with the motor.

[0013] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0014] The motor is one of the following: stepper motor, brushless DC motor, brushed DC motor, servo motor, and AC motor.

[0015] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0016] The encoder is connected to the receiver and transmitter. The encoder monitors the rotation angle of the motor in real time as the receiver and transmitter rotates, and feeds back the monitoring results to the main control unit.

[0017] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0018] The measuring probe is connected to the steel wire rope of the take-up and release device, and the measuring probe rises or falls as the take-up and release device rotates.

[0019] The measuring probe is equipped with an ultrasonic oil level sensor, a water depth measuring electrode, a water depth measuring probe, a density measuring sensor, a temperature measuring sensor, a measuring circuit module, a wireless communication module, and a power supply module.

[0020] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0021] The main control unit is connected to the encoder and the motor respectively;

[0022] The main control unit controls the motor to rotate or stop based on signals fed back from the encoder and measuring probe;

[0023] The main control unit calculates the current liquid level height based on the signals fed back from the encoder and the measuring probe;

[0024] The main control unit calculates the current density and temperature of the liquid based on the signal fed back from the measuring probe;

[0025] The main control unit calculates the current liquid bottom height based on the signals fed back from the encoder and measuring probe, and displays the current liquid level, liquid density, temperature and liquid bottom height on the display screen on the main control unit.

[0026] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0027] When measuring the liquid level:

[0028] When the ultrasonic sensor on the measuring probe detects the fuel level, the wireless communication module on the measuring probe transmits the detection signal to the main control unit. The main control unit then controls the motor to stop rotating for 3 seconds. Simultaneously, after receiving the signal that the motor has stopped rotating, the encoder feeds back the detected stop signal to the main control unit. The main control unit analyzes the obtained stop signal, calculates the current fuel level, and displays the current fuel level on the display screen on the main control unit.

[0029] When measuring the density and temperature of a liquid:

[0030] After the liquid level is measured, the main control unit controls the motor to continue rotating. When the measuring probe is submerged in the liquid, the density and temperature of the liquid are calculated based on the density and temperature sensors in the measuring probe. At the same time, the measurement results are transmitted to the main control unit via the wireless communication module in the measuring probe, and the density and temperature of the liquid are displayed on the display screen on the main control unit.

[0031] When measuring the height of the oil-water mixture interface:

[0032] When the measuring probe continues to descend and contacts the oil-water interface, the water depth measuring electrode on the measuring probe is short-circuited and conducts. At the same time, the wireless communication module in the measuring probe transmits a signal to the main control unit, and the main control unit controls the motor to stop rotating for 3 seconds.

[0033] At the same time, after receiving the signal that the motor has stopped rotating, the encoder feeds back the signal to the main control unit, calculates the current oil-water mixture level based on the main control unit, and displays the current oil-water mixture level on the display screen on the main control unit.

[0034] When measuring the bottom of a liquid:

[0035] After the height of the oil-water mixture is measured, the main control unit controls the motor to continue rotating. When the measuring probe continues to descend and the water depth measuring probe on the measuring probe contacts the bottom of the liquid, the wireless communication module in the measuring probe transmits a signal to the main control unit, and the main control unit controls the motor to stop rotating for 3 seconds.

[0036] At the same time, after receiving the signal that the motor has stopped rotating, the encoder feeds back the signal to the main control unit, calculates the current liquid bottom height based on the main control unit, displays the current liquid bottom height on the display screen on the main control unit, and controls the motor to reset based on the main control unit.

[0037] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid, comprising a structural assembly and an electronic measurement module assembly, further includes:

[0038] The structural parameters and positional connections of the structural assembly and electronic measurement module assembly in the integrated sensor are obtained, and the integrated sensor is simulated in a computer based on the structural parameters and positional connections to obtain a virtual model of the integrated sensor.

[0039] Simultaneously, the three-dimensional structure of the oil tank is obtained, and a virtual three-dimensional structure of the oil tank is constructed in the computer. Based on the computer, a simulated amount of liquid is generated inside the virtual three-dimensional structure of the oil tank to obtain a virtual detection scene.

[0040] The workflow mechanism of the integrated sensor is synchronized to the virtual model, and the virtual model of the integrated sensor is controlled to perform the measurement process in the virtual detection scene based on the synchronization results;

[0041] The entire measurement process is monitored to obtain the operating status of each component in the integrated sensor under different measurement items and the collaborative workflow of different components under each measurement item. Based on the operating status and collaborative workflow, the operating status matrix of each component in the integrated sensor is generated.

[0042] Based on the virtual detection scenario, a sample matrix corresponding to the simulated liquid is constructed, and the correlation matching calculation between the operating state matrix and the sample matrix is ​​performed to obtain the measurement indicators of each component in the integrated sensor for the virtual detection scenario.

[0043] Based on the measurement indicators, identify the abnormal nodes in each component of the integrated sensor during the measurement process, and correct the abnormal nodes.

[0044] Based on the correction results, the integrated sensor is authorized to take effect, and the actual operating status of the integrated sensor is continuously monitored after the authorization is taken effect;

[0045] The integrated sensor performs dynamic self-calibration based on the continuous monitoring results at a preset cycle.

[0046] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, dynamically self-calibrating the comprehensive sensor based on continuous monitoring results at a preset period, includes:

[0047] Obtain continuous monitoring results of the actual operating status of the integrated sensor, and determine the state time sequence of the integrated sensor based on the continuous monitoring results;

[0048] The state time sequence is tracked based on a preset period, and the device state representation of the state time sequence under each preset period is determined based on the tracking results.

[0049] The device status characterization is compared with the preset reference status, and when the device status characterization does not match the preset reference status, the self-calibration parameter category and calibration amplitude of the integrated sensor are determined based on the comparison results.

[0050] Dynamic self-calibration of the integrated sensor is performed based on the self-calibration parameter category and calibration amplitude.

[0051] Preferably, a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid includes:

[0052] A measurement result record table is constructed based on the measurement project category, and the comprehensive measurement results of the integrated sensor at different times are obtained;

[0053] Based on the measurement project category, the comprehensive measurement results at different times are split into project categories, and the resulting comprehensive measurement results are mapped to the corresponding target locations in the measurement result record table based on the splitting results.

[0054] The comprehensive measurement results at different times are recorded based on the mapping results.

[0055] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0056] By effectively reducing indirect errors through high-precision sensors and intelligent algorithms, the accuracy of data is significantly improved. At the same time, environmental interference is reduced, ensuring measurement stability. While optimizing performance, the structural design is simplified, improving the convenience of liquid level measurement. It realizes automatic and accurate measurement of fuel level, bottom water level, fuel temperature and density in oil storage tanks, significantly improving measurement accuracy, equipment reliability and operational safety.

[0057] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in this application.

[0058] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0059] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0060] Figure 1 This is a schematic diagram of the device connection for a comprehensive sensor that measures the liquid level, density, temperature, and bottom of a liquid, according to an embodiment of the present invention.

[0061] Figure 2 This is a schematic diagram of the structure of a measuring probe in a comprehensive sensor for measuring the liquid level, density, temperature, and bottom of a liquid, according to an embodiment of the present invention. Detailed Implementation

[0062] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0063] Example 1:

[0064] This embodiment provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom depth, such as... Figure 1 As shown, it includes:

[0065] Structural assembly and electronic measurement module assembly;

[0066] The structural assembly includes a take-up / retractor 3 and a motor 4;

[0067] The electronic measurement module assembly includes a main control unit 1, an encoder 2, and a measurement probe 5;

[0068] The measuring probe 5 is installed inside the oil tank. The structural assembly and the electronic measuring module assembly are respectively installed in the housing 6. The motor 4 is connected to the take-up and take-down device 3. The steel wire rope on the take-up and take-down device 3 is connected to the measuring probe 5. The encoder 2 is connected to the take-up and take-down device 3. The main control unit 1 is connected to the encoder 2 and the motor 4 respectively.

[0069] The working principle of the above technical solution is as follows: fuel level measurement: when the ultrasonic sensor on the measuring probe detects the fuel level, the wireless communication module on the measuring probe transmits a signal to the main control unit. The main control unit controls the motor to stop rotating for 3 seconds. At the same time, after the encoder receives the signal that the motor has stopped rotating, it immediately sends a feedback signal to the main control unit. The main control unit calculates the current fuel level.

[0070] Fuel density and temperature measurement: After the fuel level is measured, the main control unit controls the motor to continue rotating. When the measuring probe is submerged in the fuel, the density and temperature sensors in the measuring probe calculate the current fuel density and temperature.

[0071] Oil-water mixture interface height measurement: When the measuring probe continues to descend and contacts the oil-water mixture interface, the water depth measuring electrode on the measuring probe is short-circuited and conducts. At the same time, the wireless communication module in the measuring probe transmits a signal to the main control unit. The main control unit controls the motor to stop rotating for 3 seconds. At the same time, after the encoder receives the signal that the motor has stopped rotating, it immediately feeds back a signal to the main control unit. The main control unit calculates the current oil-water mixture level.

[0072] Liquid bottom measurement: After measuring the height of the oil-water mixture, the main control unit controls the motor to continue rotating. As the measuring probe continues to descend, once the water depth measuring probe on the measuring probe contacts the bottom of the liquid, the wireless communication module in the measuring probe transmits a signal to the main control unit. The main control unit then controls the motor to stop rotating for 3 seconds. Simultaneously, after receiving the signal that the motor has stopped rotating, the encoder immediately sends a feedback signal to the main control unit, which then calculates the current liquid bottom height.

[0073] The beneficial effects of the above technical solution are: it effectively reduces indirect errors and significantly improves data accuracy by using high-precision sensors and intelligent algorithms. At the same time, it reduces interference from environmental factors, ensures measurement stability, simplifies structural design while optimizing performance, improves the convenience of liquid level measurement, and realizes automatic and accurate measurement of fuel level, bottom water level, fuel temperature and density in oil storage tanks, significantly improving measurement accuracy, equipment reliability and operational safety.

[0074] Example 2:

[0075] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0076] The receiver 3 is directly connected to the motor 4, and the receiver 3 rotates with the motor 4.

[0077] The beneficial effects of the above technical solution are: by driving the retractor to rotate by the motor, it is easier to automatically raise and lower the measuring probe to achieve automatic measurement of liquid level, density, temperature and bottom of liquid.

[0078] Example 3:

[0079] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0080] The motor 4 is one of the following: stepper motor, brushless DC motor, brushed DC motor, servo motor, and AC motor.

[0081] The beneficial effect of the above technical solution is that by using a motor as an actuator, the measuring probe can be driven by the motor, thereby realizing the automatic lifting and lowering of the measuring probe.

[0082] Example 4:

[0083] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0084] The encoder 2 is connected to the receiver 3. The encoder 2 rotates with the receiver 3 to monitor the rotation angle of the motor 4 in real time and feeds back the monitoring results to the main control unit 1.

[0085] The beneficial effects of the above technical solution are: by monitoring the rotation angle of the motor through the encoder and feeding the monitoring results back to the main control unit, the main control unit can perform height conversion on the monitored rotation angle, thereby realizing the effective determination of the liquid level and the height of the liquid bottom.

[0086] Example 5:

[0087] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom depth, such as... Figure 2 As shown, it includes:

[0088] The measuring probe 5 is connected to the steel wire rope of the take-up and release device 3, and the measuring probe 5 rises or falls with the rotation of the take-up and release device 3.

[0089] The measuring probe 5 is equipped with an oil level ultrasonic sensor, a water depth measuring electrode, a water depth measuring probe, a density measuring sensor, a temperature measuring sensor, a measuring circuit module, a wireless communication module, and a power supply module.

[0090] The beneficial effects of the above technical solution are: by defining the structure of the measuring probe, the liquid level, density, temperature and bottom of the liquid can be accurately and effectively determined based on the measuring probe.

[0091] Example 6:

[0092] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0093] The main control unit 1 is connected to the encoder 2 and the motor 4 respectively;

[0094] The main control unit 1 controls the motor 4 to rotate or stop based on the signals fed back from the encoder 2 and the measuring probe 5;

[0095] The main control unit 1 calculates the current liquid level height based on the signals fed back by the encoder 2 and the measuring probe 5;

[0096] The main control unit 1 calculates the current density and temperature of the liquid based on the signal fed back by the measuring probe 5;

[0097] The main control unit 1 calculates the current liquid bottom height based on the signals fed back by the encoder 2 and the measuring probe 5, and displays the current liquid level, liquid density, temperature and liquid bottom height on the display screen on the main control unit 1.

[0098] The beneficial effects of the above technical solution are: by summarizing and analyzing the signals monitored by the encoder and the measuring probe, the height of the liquid level, the density and temperature of the liquid, and the height of the bottom of the liquid can be accurately and effectively determined.

[0099] Example 7:

[0100] Based on Example 6, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0101] When measuring the liquid level:

[0102] When the ultrasonic sensor on the measuring probe 5 detects the fuel level, the wireless communication module on the measuring probe 5 transmits the detection signal to the main control unit 1. The main control unit 1 then controls the motor 4 to stop rotating for 3 seconds. At the same time, after receiving the signal that the motor 4 has stopped rotating, the encoder 2 feeds back the detected stop rotation signal to the main control unit 1. The main control unit 1 analyzes the obtained stop rotation signal, calculates the current fuel level, and displays the current fuel level on the display screen on the main control unit 1.

[0103] When measuring the density and temperature of a liquid:

[0104] After the liquid level is measured, the main control unit 1 controls the motor 4 to continue rotating. When the measuring probe 5 is submerged in the liquid, the density and temperature of the liquid are calculated based on the density and temperature sensors in the measuring probe 5. At the same time, the measurement results are transmitted to the main control unit 1 via the wireless communication module in the measuring probe 5, and the density and temperature of the liquid are displayed on the screen of the main control unit 1.

[0105] When measuring the height of the oil-water mixture interface:

[0106] When the measuring probe 5 continues to descend and contacts the oil-water mixing interface, the water depth measuring electrode on the measuring probe 5 is short-circuited and conducts. At the same time, the wireless communication module in the measuring probe 5 transmits a signal to the main control unit 1, and the main control unit 1 controls the motor 4 to stop rotating for 3 seconds.

[0107] At the same time, after receiving the signal that the motor 4 has stopped rotating, the encoder 2 sends a feedback signal to the main control unit 1, calculates the current oil-water mixture level based on the main control unit 1, and displays the current oil-water mixture level on the display screen on the main control unit 1.

[0108] When measuring the bottom of a liquid:

[0109] After the height of the oil-water mixture is measured, the main control unit 1 controls the motor 4 to continue rotating. When the measuring probe 5 continues to descend, and the water depth measuring probe on the measuring probe 5 contacts the bottom of the liquid, the wireless communication module in the measuring probe 5 transmits a signal to the main control unit 1, and the main control unit 1 controls the motor 4 to stop rotating for 3 seconds.

[0110] At the same time, after receiving the signal that the motor 4 has stopped rotating, the encoder 2 sends a feedback signal to the main control unit 1, calculates the current liquid bottom height based on the main control unit 1, displays the current liquid bottom height on the display screen on the main control unit 1, and controls the motor 4 to reset based on the main control unit 1.

[0111] Example 8:

[0112] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of liquid, including a structural assembly and an electronic measurement module assembly, and further comprising:

[0113] The structural parameters and positional connections of the structural assembly and electronic measurement module assembly in the integrated sensor are obtained, and the integrated sensor is simulated in a computer based on the structural parameters and positional connections to obtain a virtual model of the integrated sensor.

[0114] Simultaneously, the three-dimensional structure of the oil tank is obtained, and a virtual three-dimensional structure of the oil tank is constructed in the computer. Based on the computer, a simulated amount of liquid is generated inside the virtual three-dimensional structure of the oil tank to obtain a virtual detection scene.

[0115] The workflow mechanism of the integrated sensor is synchronized to the virtual model, and the virtual model of the integrated sensor is controlled to perform the measurement process in the virtual detection scene based on the synchronization results;

[0116] The entire measurement process is monitored to obtain the operating status of each component in the integrated sensor under different measurement items and the collaborative workflow of different components under each measurement item. Based on the operating status and collaborative workflow, the operating status matrix of each component in the integrated sensor is generated.

[0117] Based on the virtual detection scenario, a sample matrix corresponding to the simulated liquid is constructed, and the correlation matching calculation between the operating state matrix and the sample matrix is ​​performed to obtain the measurement indicators of each component in the integrated sensor for the virtual detection scenario.

[0118] Based on the measurement indicators, identify the abnormal nodes in each component of the integrated sensor during the measurement process, and correct the abnormal nodes.

[0119] Based on the correction results, the integrated sensor is authorized to take effect, and the actual operating status of the integrated sensor is continuously monitored after the authorization is taken effect;

[0120] The integrated sensor performs dynamic self-calibration based on the continuous monitoring results at a preset cycle.

[0121] In this embodiment, the virtual testing scenario refers to a digital testing environment that includes a virtual model of the oil tank and a simulated volume of liquid.

[0122] In this embodiment, the workflow mechanism refers to the logical flow and timing rules by which the various components inside the sensor work together to execute measurement tasks.

[0123] In this embodiment, collaborative workflow refers to the collaborative state of different components under various measurement items, including interaction relationships, etc.

[0124] In this embodiment, the operating state matrix refers to the numerical matrix that records the state parameters of each component of the sensor during the measurement process.

[0125] In this embodiment, the sample matrix refers to the ideal reference value matrix generated based on the analog liquid physical properties.

[0126] In this embodiment, performing correlation matching calculation between the running state matrix and the sample matrix refers to performing correlation matching calculation through a similarity calculation function.

[0127] In this embodiment, the measurement index refers to the detection results of each component in the integrated sensor on the virtual detection scene, which are determined by performing correlation matching calculations between the operating state matrix and the sample matrix.

[0128] In this embodiment, an abnormal node refers to a specific component or logical link in the measurement process that has a deviation or malfunction.

[0129] In this embodiment, "authorization" refers to the authorization operation that enables the measurement function of the actual sensor after virtual verification.

[0130] In this embodiment, dynamic self-calibration refers to the process of automatically adjusting sensor parameters based on continuous monitoring data to maintain accuracy.

[0131] The beneficial effects of the above technical solution are as follows: By constructing a high-precision virtual model of the integrated sensor and oil tank, and combining workflow synchronization and full-process monitoring, a comprehensive simulation and verification of the sensor measurement process is realized in a virtual environment. Secondly, through the correlation analysis of the operating state matrix and the sample matrix, abnormal measurement nodes are accurately identified and corrected in advance, significantly improving the reliability of the sensor. Finally, the dynamic self-calibration mechanism based on continuous monitoring further ensures the long-term operating accuracy of the integrated sensor, ensuring the accuracy, convenience, and effectiveness of liquid measurement.

[0132] Example 9:

[0133] Based on Example 8, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid. The comprehensive sensor performs dynamic self-calibration based on continuous monitoring results at a preset period, including:

[0134] Obtain continuous monitoring results of the actual operating status of the integrated sensor, and determine the state time sequence of the integrated sensor based on the continuous monitoring results;

[0135] The state time sequence is tracked based on a preset period, and the device state representation of the state time sequence under each preset period is determined based on the tracking results.

[0136] The device status characterization is compared with the preset reference status, and when the device status characterization does not match the preset reference status, the self-calibration parameter category and calibration amplitude of the integrated sensor are determined based on the comparison results.

[0137] Dynamic self-calibration of the integrated sensor is performed based on the self-calibration parameter category and calibration amplitude.

[0138] In this embodiment, the state time sequence refers to a series of continuous data recorded in chronological order that can reflect the operating status of the integrated sensor.

[0139] In this embodiment, device status characterization refers to the feature values ​​or feature vectors extracted from the status time sequence within each preset period, which can represent the overall health status of the sensor within that period.

[0140] In this embodiment, the preset reference state refers to the ideal state characterization that is pre-set for comparison reference when the sensor is working normally or has been calibrated.

[0141] In this embodiment, the self-calibration parameter category refers to the type of sensor parameter that needs to be adjusted.

[0142] In this embodiment, the calibration amplitude refers to the specific value or adjustment range for dynamically adjusting abnormal operating parameters in the integrated sensor.

[0143] The beneficial effects of the above technical solution are as follows: by continuously monitoring and generating a state time sequence and periodically extracting the device state characterization and comparing it with the reference state, early detection of overall sensor performance degradation or abnormality is achieved. Secondly, by automatically determining the type and amplitude of calibration parameters and performing dynamic self-calibration, the measurement accuracy and stability of the sensor during long-term operation are effectively guaranteed, the need for manual maintenance is greatly reduced, and the automation and reliability of the system are improved.

[0144] Example 10:

[0145] Based on Example 1, this example provides a comprehensive sensor for measuring liquid level, density, temperature, and bottom of a liquid, including:

[0146] A measurement result record table is constructed based on the measurement project category, and the comprehensive measurement results of the integrated sensor at different times are obtained;

[0147] Based on the measurement project category, the comprehensive measurement results at different times are split into project categories, and the resulting comprehensive measurement results are mapped to the corresponding target locations in the measurement result record table based on the splitting results.

[0148] The comprehensive measurement results at different times are recorded based on the mapping results.

[0149] In this embodiment, the measurement item category refers to the specific measurement type performed by the integrated sensor, such as temperature, density, and liquid level.

[0150] In this embodiment, the comprehensive measurement result refers to the data set collected by the comprehensive sensor at a certain moment, which includes data of all measurement items.

[0151] In this embodiment, the target location refers to the unique storage unit (such as a specific cell in the table) that corresponds to a specific measurement item and timestamp in the measurement result record table.

[0152] The beneficial effects of the above technical solution are: by automatically splitting and mapping measurement data to a structured record table, efficient and accurate classification and recording of measurement results for multiple items are achieved, which greatly improves the automation level of data management and query efficiency.

[0153] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A comprehensive sensor for measuring the liquid level, density, temperature, and bottom of a liquid, characterized in that, include: Structural assembly and electronic measurement module assembly; The structural assembly includes a take-up device (3) and a motor (4). The electronic measurement module assembly includes a main control unit (1), an encoder (2), and a measurement probe (5); The measuring probe (5) is installed inside the oil tank. The structural assembly and the electronic measuring module assembly are respectively installed in the housing (6). The motor (4) is connected to the take-up and take-down device (3). The steel wire rope on the take-up and take-down device (3) is connected to the measuring probe (5). The encoder (2) is connected to the take-up and take-down device (3). The main control unit (1) is connected to the encoder (2) and the motor (4) respectively. The structural assembly and electronic measurement module assembly also include: The structural parameters and positional connections of the structural assembly and electronic measurement module assembly in the integrated sensor are obtained, and the integrated sensor is simulated in a computer based on the structural parameters and positional connections to obtain a virtual model of the integrated sensor. Simultaneously, the three-dimensional structure of the oil tank is obtained, and a virtual three-dimensional structure of the oil tank is constructed in the computer. Based on the computer, a simulated amount of liquid is generated inside the virtual three-dimensional structure of the oil tank to obtain a virtual detection scene. The workflow mechanism of the integrated sensor is synchronized to the virtual model, and the virtual model of the integrated sensor is controlled to perform the measurement process in the virtual detection scene based on the synchronization results; The entire measurement process is monitored to obtain the operating status of each component in the integrated sensor under different measurement items and the collaborative workflow of different components under each measurement item. Based on the operating status and collaborative workflow, the operating status matrix of each component in the integrated sensor is generated. Based on the virtual detection scenario, a sample matrix corresponding to the simulated liquid is constructed, and the correlation matching calculation between the operating state matrix and the sample matrix is ​​performed to obtain the measurement indicators of each component in the integrated sensor for the virtual detection scenario. Based on the measurement indicators, identify the abnormal nodes in each component of the integrated sensor during the measurement process, and correct the abnormal nodes. Based on the correction results, the integrated sensor is authorized to take effect, and the actual operating status of the integrated sensor is continuously monitored after the authorization is taken effect; Based on a preset cycle, the integrated sensor performs dynamic self-calibration according to continuous monitoring results; Based on a preset cycle, the integrated sensor performs dynamic self-calibration according to continuous monitoring results, including: Obtain continuous monitoring results of the actual operating status of the integrated sensor, and determine the state time sequence of the integrated sensor based on the continuous monitoring results; The state time sequence is tracked based on a preset period, and the device state representation of the state time sequence under each preset period is determined based on the tracking results. The device status characterization is compared with the preset reference status, and when the device status characterization does not match the preset reference status, the self-calibration parameter category and calibration amplitude of the integrated sensor are determined based on the comparison results. Dynamic self-calibration of the integrated sensor is performed based on the self-calibration parameter category and calibration amplitude.

2. The integrated sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: The take-up device (3) is directly connected to the motor (4), and the take-up device (3) rotates with the motor (4).

3. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: The motor (4) is one of the following: stepper motor, brushless DC motor, brushed DC motor, servo motor and AC motor.

4. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: The encoder (2) is connected to the receiver (3). The encoder (2) rotates with the receiver (3) to monitor the rotation angle of the motor (4) in real time and feeds back the monitoring results to the main control unit (1).

5. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: The measuring probe (5) is connected to the steel wire rope of the take-up and release device (3), and the measuring probe (5) rises or falls with the rotation of the take-up and release device (3). The measuring probe (5) is equipped with an oil level ultrasonic sensor, a water depth measuring electrode, a water depth measuring probe, a density measuring sensor, a temperature measuring sensor, a measuring circuit module, a wireless communication module, and a power supply module.

6. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: The main control unit (1) is connected to the encoder (2) and the motor (4) respectively; The main control unit (1) controls the motor (4) to rotate or stop based on the signals fed back from the encoder (2) and the measuring probe (5); The main control unit (1) calculates the current liquid level height based on the signals fed back by the encoder (2) and the measuring probe (5); The main control unit (1) calculates the density and temperature of the liquid based on the signal fed back by the measuring probe (5); The main control unit (1) calculates the current liquid bottom height based on the signals fed back by the encoder (2) and the measuring probe (5), and displays the current liquid level, liquid density, temperature and liquid bottom height on the display screen on the main control unit (1).

7. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 6, characterized in that, include: When measuring the liquid level: When the ultrasonic sensor on the measuring probe (5) detects the fuel level, the wireless communication module on the measuring probe (5) transmits the detection signal to the main control unit (1), and the main control unit (1) controls the motor (4) to stop rotating for 3 seconds. At the same time, after the encoder (2) receives the signal that the motor (4) has stopped rotating, it feeds back the monitored stop rotation signal to the main control unit (1), and the main control unit (1) analyzes the obtained stop rotation signal to calculate the current fuel level height, and displays the current fuel level height on the display screen on the main control unit (1). When measuring the density and temperature of a liquid: After the liquid level is measured, the main control unit (1) controls the motor (4) to continue rotating. When the measuring probe (5) is submerged in the liquid, the density and temperature of the liquid are calculated based on the density and temperature sensors in the measuring probe (5). At the same time, the measurement results are transmitted to the main control unit (1) based on the wireless communication module in the measuring probe (5), and the density and temperature of the liquid are displayed on the screen of the main control unit (1). When measuring the height of the oil-water mixture interface: When the measuring probe (5) continues to descend and contacts the oil-water mixing interface, the water depth measuring electrode on the measuring probe (5) is short-circuited and connected. At the same time, the wireless communication module in the measuring probe (5) transmits a signal to the main control unit (1) and controls the motor (4) to stop rotating for 3 seconds based on the main control unit (1). At the same time, after the encoder (2) receives the signal that the motor (4) has stopped rotating, it feeds back the signal to the main control unit (1), calculates the current oil-water mixture level based on the main control unit (1), and displays the current oil-water mixture level on the display screen on the main control unit (1); When measuring the bottom of a liquid: After the height of the oil-water mixture is measured, the motor (4) is controlled by the main control unit (1) to continue rotating. When the measuring probe (5) continues to descend, the water depth measuring probe on the measuring probe (5) contacts the bottom of the liquid. The wireless communication module in the measuring probe (5) transmits a signal to the main control unit (1), and the motor (4) is controlled by the main control unit (1) to stop rotating for 3 seconds. At the same time, after the encoder (2) receives the signal that the motor (4) has stopped rotating, it feeds back the signal to the main control unit (1), calculates the current bottom height of the liquid based on the main control unit (1), and displays the current bottom height of the liquid on the display screen on the main control unit (1). At the same time, it controls the motor (4) to reset based on the main control unit (1).

8. A comprehensive sensor for measuring liquid level, density, temperature, and bottom depth according to claim 1, characterized in that, include: A measurement result record table is constructed based on the measurement project category, and the comprehensive measurement results of the integrated sensor at different times are obtained; Based on the measurement project category, the comprehensive measurement results at different times are split into project categories, and the resulting comprehensive measurement results are mapped to the corresponding target locations in the measurement result record table based on the splitting results. The comprehensive measurement results at different times are recorded based on the mapping results.

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