CN113049059A - Intelligent metering device and metering method for liquid level of storage tank - Google Patents
Intelligent metering device and metering method for liquid level of storage tank Download PDFInfo
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- CN113049059A CN113049059A CN202110327024.8A CN202110327024A CN113049059A CN 113049059 A CN113049059 A CN 113049059A CN 202110327024 A CN202110327024 A CN 202110327024A CN 113049059 A CN113049059 A CN 113049059A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
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Abstract
The invention relates to an intelligent measuring device for the liquid level of a storage tank and a measuring method thereof, wherein the intelligent measuring device for the liquid level of the storage tank comprises a shell, a manual interaction module, a power supply module, a tape module, a sensor module, a microprocessor and a target detection algorithm module, wherein the manual interaction module comprises a zero calibration switch, a power switch and an OLED measuring result display; the power supply module comprises a polymer battery cell, a power switch indicator lamp, a power display screen and a charging interface; the tape module comprises a tape, a heavy hammer, a forward and reverse rotation motor and a variable-focus high-definition camera; the sensor module comprises a photoelectric liquid level sensor, a high-precision capacitive sensor, an LED alarm lamp and a buzzer; the microprocessor comprises a manual interaction circuit and a liquid level sensor circuit; the target detection algorithm module comprises AI image recognition, data storage and transmission. The invention realizes the automatic reading of the metering result, solves the problem of metering error caused by subjective factors, and improves the efficiency and the accuracy of the liquid level metering of the storage tank.
Description
The technical field is as follows:
the invention relates to a liquid level metering device of an oil storage tank in the petroleum and petrochemical industry, in particular to an intelligent liquid level metering device of a storage tank and a metering method thereof.
Background art:
in the field of petroleum and natural gas, the liquid level measurement of an oil product storage tank comprises a gas-liquid interface and an oil-water interface, and integrates a petroleum engineering technology, a computer technology, an electronic technology and an automatic control technology. Accurate tank level gauging can provide reliable data for production and management, which can cause profit disputes or economic losses if instruments are out of alignment or fail, and even can cause safety accidents of serious casualties. Therefore, the accuracy of the device for measuring the liquid level of the storage tank is important.
At present, the portable electronic liquid level meter-oil-water interface instrument of Honeywell company in America used in oil fields adopts a manual tape measure putting method, and after the alarm sound of an air-liquid interface and an oil-water interface is heard, the tape measure is stopped to be put in and manual reading is carried out. The device has the problems of low working efficiency, high labor intensity, unfavorable operation under severe weather conditions, large influence of subjective factors of manual reading, low precision of measuring results, inconvenient data recording, easy loss and the like.
The invention content is as follows:
the invention aims to provide an intelligent liquid level metering device for a storage tank, which is used for solving the problems of low working efficiency and high labor intensity caused by the fact that a measuring tape needs to be manually lowered and manually read when the liquid level of an oil product storage tank is metered in the prior art; the invention also aims to provide a metering method of the intelligent tank liquid level metering device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the intelligent liquid level metering device for the storage tank comprises a shell, a manual interaction module, a power supply module, a tape module, a sensor module, a microprocessor and a target detection algorithm module, wherein the manual interaction module comprises a zero calibration switch, a power switch and an OLED metering result display; the power supply module comprises a polymer battery cell, a power switch indicator lamp, a power display screen and a charging interface; the tape module comprises a tape, a heavy hammer, a forward and reverse rotation motor and a variable-focus high-definition camera; the sensor module comprises a photoelectric liquid level sensor, a high-precision capacitive sensor, an LED alarm lamp and a buzzer; the microprocessor comprises a manual interaction circuit and a liquid level sensor circuit; the target detection algorithm module comprises AI image recognition, data storage and transmission;
the measuring tape, the forward and reverse rotation motor and the variable-focal-length high-definition camera are arranged in the shell, the forward and reverse rotation motor drives the measuring tape to rotate, the free end of the measuring tape extends out of the shell and is fixedly connected with the heavy hammer, the bottom surface of the heavy hammer is provided with two mounting holes, the photoelectric liquid level sensor and the high-precision capacitance sensor are respectively mounted in the two mounting holes, the heavy hammer is provided with a central hole along the length direction, the central hole is respectively communicated with the two mounting holes through two horizontal holes, the measuring tape adopts a DuPont ETFE coating, two electric wires and two signal wires are arranged on the back surface of the measuring tape, the parts of the two electric wires and the two signal wires extending out of the free end of the measuring tape enter the central hole and then are divided into two groups, each; the variable-focal-length high-definition camera is arranged right above the tape measure, shoots the scale of the tape measure and provides the scale for the target detection algorithm module; the zero calibration switch, the motor forward rotation switch, the motor reverse rotation switch and the power switch are arranged on the shell, and the OLED metering result display, the power switch indicator lamp, the power display screen, the charging interface LED alarm lamp and the buzzer are all arranged on the shell;
the liquid level sensor circuit detects a gas-liquid interface through the photoelectric liquid level sensor, so that the disconnection of a motor forward rotation control circuit and the connection of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit are realized; the liquid level sensor circuit detects an oil-water interface through a high-precision capacitive sensor, and realizes the disconnection of a motor forward rotation control circuit and the closing of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit.
In the scheme, the manual interaction circuit realizes the on-off of the zero calibration control circuit through the zero calibration switch; the power switch realizes the on and off of the forward and reverse rotation control circuit of the motor.
In the scheme, AI image recognition of a target detection algorithm module utilizes an SSD target detection model to read data and calculate pixels of a metering result shot by a variable-focus high-definition camera and output the metering result; and the data storage and transmission utilizes the storage chip to carry out long-term storage and wireless transmission on the metering result.
According to the scheme, the tape passes through the tension wheel and then extends out of the shell, and the tape keeps tensioned through the tension wheel.
The metering method of the intelligent storage tank liquid level metering device comprises the following steps:
before measurement, a zero calibration switch is pressed down to perform zero calibration, so that the accuracy is ensured;
when the measurement is started, a motor forward rotation switch is pressed, the tape measure is automatically lowered along the vertical direction under the mechanical energy of a forward and reverse rotation motor and the potential energy of a heavy hammer, when a photoelectric liquid level sensor arranged at the lower end of the heavy hammer detects a gas-liquid interface, a motor forward rotation circuit is disconnected, a gas-liquid interface LED alarm lamp is communicated with a gas-liquid interface buzzer circuit, and an alarm is given; meanwhile, the variable-focal-length high-definition camera is communicated with a circuit, the scales of the measuring tape are shot when the gas-liquid interface is detected, the height of the gas-liquid interface is calculated by utilizing an SSD target detection model, and a metering result is displayed by an OLED metering result display;
when the high-precision capacitive sensor arranged at the lower end of the heavy hammer detects an oil-water interface, a motor forward rotation circuit is disconnected, an oil-water interface LED alarm lamp is communicated with an oil-water interface buzzer circuit, and an alarm is given out; meanwhile, the variable-focal-length high-definition camera 1 is communicated with a circuit, the scales of the measuring tape are shot when the oil-water interface is detected, the gas-liquid interface height is calculated by utilizing the SSD target detection model, and the measurement result is displayed by the OLED measurement result display.
The invention has the following beneficial effects:
1. the invention can control the forward and reverse rotation of the forward and reverse rotation motor to rotate and stop through the power switch, realize the automatic lowering and recovery functions of the tape measure, reduce the labor intensity of workers and improve the working efficiency.
2. The intelligent detection device can realize intelligent detection of a gas-liquid interface and an oil-water interface through the photoelectric liquid level sensor and the high-precision capacitive sensor, can measure the liquid level of the storage tank under severe weather conditions, and reduces the measurement error of the liquid level of the storage tank caused by human factors.
3. The invention can utilize the SSD target detection model to calculate the liquid level measurement result of the storage tank, and has more accurate result and higher precision.
4. The invention can realize long-term storage and wireless transmission of the metering result and avoid the inconvenience of manual recording and data loss.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a variable focal length high-definition camera; 2-a tape measure; 3-zero calibration switch; 4-motor positive rotation switch; 5-motor reverse switch; 6-power switch; 7-a positive and negative rotation motor; 8-power switch indicator light; 9-gas-liquid interface LED warning light; 10-oil-water interface LED warning light; 11-gas-liquid interface buzzer; 12-oil-water interface buzzer; 13-power supply display screen; 14-OLED metrology result display; 15-a charging interface; 16-a polymer cell; 17-weight dropper; 18-a photoelectric liquid level sensor; 19-high precision capacitive sensor; 20-a housing; 21-a tension wheel; 22-handle.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings:
as shown in FIG. 1, the intelligent tank level metering device comprises a housing 20, a manual interaction module, a power supply module, a tape measure module, a sensor module, a control circuit module and an object detection algorithm module. The manual interaction module comprises a zero calibration switch 3, a power switch 6 and an OLED metering result display 14; the power supply module comprises a polymer battery cell 16, a power switch indicator light 8, a power display screen 13 and a charging interface 15; the tape module comprises a tape 2, a heavy hammer 17, a forward and reverse rotation motor 7 and a variable-focus high-definition camera 1; the sensor module comprises a photoelectric liquid level sensor 18, a high-precision capacitive sensor 19, an LED alarm lamp and a buzzer; the control circuit module comprises a manual interaction circuit and a liquid level sensor circuit; the target detection algorithm module comprises AI image recognition, data storage and transmission.
The tape measure 2, the forward and reverse rotation motor 7 and the variable-focus high-definition camera 1 are arranged in a shell 20, the forward and reverse rotation motor 7 drives the tape measure 2 to rotate, the free end of the tape measure 2 extends out of the shell 20 and is fixedly connected with a heavy hammer 17, a tensioner 21 is arranged between the shell 20 and the heavy hammer 17, the tape measure 2 is tensioned through the tensioner 21, the bottom surface of the heavy hammer 17 is provided with two mounting holes, a photoelectric liquid level sensor 18 and a high-precision capacitive sensor 19 are respectively mounted in the two mounting holes, the heavy hammer 17 is provided with a central hole along the length direction, the central hole is respectively communicated with the two mounting holes through two horizontal holes, the tape measure 2 adopts a Du, two electric wires and two signal wires are arranged on the back of the tape measure 2, the two electric wires and the two signal wires enter the central hole from the part extending out of the free end of the tape measure 2 and then are divided into two groups, each group is provided with one electric wire and one signal wire, and the two groups are respectively connected with the photoelectric liquid level sensor 18 and the high-precision capacitance sensor 19 through horizontal holes. Zero calibration switch 3, motor corotation switch 4, motor reversal switch 5, switch 6 set up on shell 20, and OLED measurement result display 14, switch indicator 8, power display screen 13, the interface that charges, LED warning light, bee calling organ all set up on shell 20, and shell 20 has handle 22.
The zero calibration switch 3 of the manual interaction module realizes the zero calibration function of the device before metering; the power switch 6 controls the forward and reverse rotation motor 7 to rotate forward, reverse and stop; the OLED metering result display 14 displays the metering result provided by the target detection algorithm module after metering is completed.
The polymer cell 16 of the power supply module provides electrical energy for the device; the power switch indicator light 8 displays the working state of the device; the power supply display screen 13 displays the residual electric quantity of the polymer battery cell 16 to remind of charging in time; the charging interface 15 provides a port for charging the polymer cell 16.
The tape 2 of the tape module is made of scales of 0-99 cm, the minimum scale is 1mm, the tape is used for testing the heights of a gas-liquid interface and an oil-water interface of a storage tank, the tape 2 adopts a DuPont ETFE coating, and four copper wires for power supply and signal transmission of a sensor are arranged on the back of the tape; the weight 17 is connected with one end of the tape measure 2 to provide gravity for the tape measure 2 and ensure the downward vertical direction in the process of lowering the tape measure; the positive and negative rotation motor 7 is connected with the other end of the measuring tape 2 to provide positive and negative rotation power for the measuring tape 2, so that the lowering and recovery functions of the measuring tape are realized, namely the measuring tape 2 is automatically lowered and recovered by utilizing the mechanical energy of the positive and negative rotation motor 7 and the potential energy of the heavy hammer 17; a photoelectric liquid level sensor 18 and a high-precision capacitive sensor 19 are arranged in the lower end of the heavy hammer 17, and a gas-liquid interface and an oil-water interface are intelligently detected; the variable-focal-length high-definition camera 1 is arranged above the tape measure 2, when the gas-liquid interface and the oil-water interface of the storage tank are tested, the scales of the tape measure are shot and provided for the target detection algorithm module, and the liquid level metering result of the storage tank is calculated by utilizing the SSD target detection model. The tape module realizes the metering of a gas-liquid interface and an oil-water interface and the shooting of a metering result.
The photoelectric level sensor 18 of the sensor module detects the gas-liquid interface; the high-precision capacitive sensor 19 detects the oil-water interface; the LED alarm lamp and the buzzer are activated at the same time at the gas-liquid interface or the oil-water interface, so that the alarm function is realized.
The manual interaction circuit of the control circuit module realizes the on-off of the zero calibration control circuit through the zero calibration switch 3; the power supply control switch realizes the on-off of the forward rotation and reverse rotation control circuit of the motor.
A liquid level sensor circuit of the control circuit module detects a gas-liquid interface through a photoelectric liquid level sensor 18 to realize the disconnection of a motor forward rotation control circuit and the closing of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit; the oil-water interface is detected by the high-precision capacitive sensor 19, so that the disconnection of a motor forward rotation control circuit and the closing of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit are realized.
The AI image recognition of the target detection algorithm module utilizes an SSD target detection model to read data and calculate pixels of the measurement result shot by the variable-focus high-definition camera 1 and outputs the measurement result; and the data storage and transmission utilizes the storage chip to carry out long-term storage and wireless transmission on the metering result, so that the AI image identification and automatic storage and transmission of the metering result are realized.
The invention discloses a method for calculating a liquid level measurement result of a storage tank, which comprises the following steps: and defining the real distance/pixel distance as a pixel scale, and calculating the pixel scale by adopting an averaging method.
In the formula: r is a pixel scale; n is the scale number of the tape measure; i is more than 1 and n-1 is the number of the adjacent scale intervals of the tape measure; liThe actual distance between adjacent scales; siIs the pixel distance between adjacent scales.
And converting the pixel distance into a real distance through a pixel scale, and calculating a liquid level measurement result of the storage tank by adopting an averaging method.
In the formula: p is a tank liquid level measurement result; n is the number of the scales of the tape measure; c. CiFor the ith tape measure scale value (i e [0, n ]])；wiIs the pixel distance between the pointer and the ith tape measure scale.
The intelligent metering of a gas-liquid interface and an oil-water interface of a storage tank is realized by utilizing a photoelectric liquid level sensor 18 and a high-precision capacitive sensor 19; the automatic reading and storing functions of the metering result are realized by utilizing an image recognition technology, the intelligent metering of the liquid level of the storage tank can be realized, and the problem of inconvenience in manual metering under adverse weather conditions can be solved; the automatic reading of the metering result can be realized, and the problem of metering error caused by subjective factors can be solved; the device can realize the automatic storage of the metering result and can solve the problems of inconvenience in manual recording and data loss of the metering result.
When the invention works:
before testing, press zero calibration switch 3, communicate control circuit, carry out zero calibration to the device, guarantee the degree of accuracy of device.
When the test is started, the motor forward rotation switch 4 is pressed, the tape measure 2 is automatically lowered along the vertical direction under the mechanical energy of the forward and reverse rotation motor 7 and the potential energy of the heavy hammer 17, when the photoelectric liquid level sensor 18 arranged at the lower end of the heavy hammer 17 detects a gas-liquid interface, a motor forward rotation circuit is disconnected, a gas-liquid interface LED alarm lamp 9 and a gas-liquid interface buzzer 11 are connected in a circuit mode, and an alarm is given; meanwhile, the variable-focus high-definition camera 1 is in circuit communication, the scales of the measuring tape 2 when the gas-liquid interface is detected are shot, the gas-liquid interface height is calculated by utilizing the SSD target detection model, and the measurement result is displayed by the OLED measurement result display 14.
When the test is continued, the motor forward rotation switch 4 is pressed, the tape measure 2 is automatically lowered along the vertical direction under the mechanical energy of the forward and reverse rotation motor 7 and the potential energy of the heavy hammer 17, when the high-precision capacitive sensor 19 arranged at the lower end of the heavy hammer 17 detects an oil-water interface, the motor forward rotation circuit is disconnected, the oil-water interface LED alarm lamp 10 is in circuit communication with the oil-water interface buzzer 12, and an alarm is given; meanwhile, the variable-focus high-definition camera 1 is in circuit communication, the scales of the measuring tape 2 are shot when the oil-water interface is detected, the gas-liquid interface height is calculated by utilizing an SSD target detection model, and the measurement result is displayed by the OLED measurement result display 14.
After the test is finished, the motor reverse rotation switch 5 is pressed, the tape measure 2 is recovered under the mechanical energy action of the forward and reverse rotation motor 7, the power supply closing switch is pressed, and the circuit of the forward and reverse rotation motor 7 is disconnected.
During zero calibration and test operation, the power switch indicator light 8 is always in an operating state, and is in a closed state at the rest of time.
During the operating condition, power display screen 13 shows the residual capacity of polymer electricity core 16, and when the electric quantity is not enough, through charging interface 15 supplementary electric quantity.
Claims (5)
1. The utility model provides a storage tank liquid level intelligence metering device which characterized in that: the intelligent measuring device for the liquid level of the storage tank comprises a shell (20), a manual interaction module, a power supply module, a tape module, a sensor module, a microprocessor and a target detection algorithm module, wherein the manual interaction module comprises a zero calibration switch (3), a power switch (6) and an OLED measuring result display (14); the power supply module comprises a polymer battery cell (16), a power switch indicator lamp (8), a power display screen (13) and a charging interface (15); the tape module comprises a tape (2), a heavy hammer (17), a forward and reverse rotation motor (7) and a variable-focus high-definition camera (1); the sensor module comprises a photoelectric liquid level sensor (18), a high-precision capacitive sensor (19), an LED alarm lamp and a buzzer; the microprocessor comprises a manual interaction circuit and a liquid level sensor circuit; the target detection algorithm module comprises AI image recognition, data storage and transmission;
the measuring tape (2), the forward and reverse rotation motor (7) and the variable-focus high-definition camera (1) are arranged in the shell (20), the forward and reverse rotation motor (7) drives the measuring tape (2) to rotate, the free end of the measuring tape (2) extends out of the shell (20) and is fixedly connected with the heavy hammer (17), the bottom surface of the heavy hammer (17) is provided with two mounting holes, the two mounting holes are respectively provided with a photoelectric liquid level sensor (18) and a high-precision capacitance sensor (19), the heavy hammer (17) is provided with a central hole along the length direction, the central hole is respectively communicated with the two mounting holes through the two horizontal holes, the measuring tape (2) adopts a DuPont ETFE coating, two electric wires and two signal wires are arranged on the back of the tape measure, the parts of the two electric wires and the two signal wires extending out of the free end of the tape measure enter the central hole and then are divided into two groups, each group is provided with one electric wire and one signal wire, and the two groups are respectively connected with a photoelectric liquid level sensor (18) and a high-precision capacitance sensor (19) through horizontal holes; the variable-focal-length high-definition camera (1) is arranged right above the tape measure (2), shoots the scale of the tape measure and provides the scale for the target detection algorithm module; the zero calibration switch (3), the motor forward rotation switch (4), the motor reverse rotation switch (5) and the power switch (6) are arranged on the shell (20), and the OLED metering result display (14), the power switch indicator lamp (8), the power display screen (13), the charging interface ED alarm lamp and the buzzer are all arranged on the shell (20);
the liquid level sensor circuit detects a gas-liquid interface through a photoelectric liquid level sensor (18) to realize the disconnection of a motor forward rotation control circuit and the closing of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit; the liquid level sensor circuit detects an oil-water interface through a high-precision capacitive sensor (19), so that the disconnection of a motor forward rotation control circuit and the closing of an LED alarm lamp, a buzzer and a variable-focus high-definition camera circuit are realized.
2. The intelligent tank level gauge device of claim 1, wherein: the manual interaction circuit realizes the on and off of the zero calibration control circuit through the zero calibration switch (3); the power switch (6) realizes the on-off of the forward rotation and reverse rotation control circuit of the motor.
3. The electric pulse rock breaking experimental device capable of testing the temperature stress of the rock according to claim 2, wherein: the AI image recognition of the target detection algorithm module utilizes an SSD target detection model to read data and calculate pixels of a metering result shot by a variable-focus high-definition camera and outputs the metering result; and the data storage and transmission utilizes the storage chip to carry out long-term storage and wireless transmission on the metering result.
4. The intelligent tank level gauge apparatus of claim 3, wherein: the measuring tape (2) extends out of the shell (20) after passing through the tension wheel (21), and the measuring tape (20) is kept tensioned through the tension wheel (21).
5. The metering method of the intelligent tank level metering device as claimed in claim 4, wherein:
before measurement, a zero calibration switch (3) is pressed to perform zero calibration so as to ensure the accuracy;
when the measurement is started, a motor forward rotation switch (4) is pressed, the tape measure (2) is automatically lowered along the vertical direction under the action of the mechanical energy of a forward and reverse rotation motor (7) and the potential energy of a heavy hammer (17), when a photoelectric liquid level sensor (18) arranged at the lower end of the heavy hammer (17) detects a gas-liquid interface, a motor forward rotation circuit is disconnected, a gas-liquid interface LED alarm lamp (9) is in circuit communication with a gas-liquid interface buzzer (11), and an alarm is given; meanwhile, the variable-focal-length high-definition camera (1) is communicated with a circuit, the scales of the measuring tape (2) are shot when the gas-liquid interface is detected, the gas-liquid interface height is calculated by utilizing an SSD target detection model, and the measuring result is displayed by an OLED measuring result display (14);
when the measurement is continued, the motor forward rotation switch (4) is pressed, the tape measure (2) is automatically lowered along the vertical direction under the action of the mechanical energy of the forward and reverse rotation motor (7) and the potential energy of the heavy hammer (17), when the high-precision capacitive sensor (19) arranged at the lower end of the heavy hammer (17) detects an oil-water interface, the motor forward rotation circuit is disconnected, the oil-water interface LED alarm lamp (10) is communicated with the oil-water interface buzzer (12) through a circuit, and an alarm is given; meanwhile, the variable-focus high-definition camera (1) is communicated with a circuit, the scales of the measuring tape are shot when an oil-water interface is detected, the gas-liquid interface height is calculated by utilizing an SSD target detection model, and a metering result is displayed by an OLED metering result display (14).
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