KR20110128378A - The digital angle measurement sensor or device by the electronic circuit sensing pad in the liquid - Google Patents

Abstract

PURPOSE: A digital angle measuring sensor and a device thereof using a sensing pad in which current flows through liquid are provided to improve the accuracy, digital and slope compensation comparing with an existing sensing mode by measuring the exact amount of the liquid through a digital mode. CONSTITUTION: A digital angle measuring sensor using a sensing pad in which current flows through liquid comprises a pad detecting unit and a height measuring unit and a quantity calculation unit. When the pad detection unit measures the height, an electric signal is added to a specific pad and the electricity is flowed between pads through the liquid. The electrically connected pads are detected. The height measuring unit detects the touching or non-touching pad with the liquid, the height of the liquid is measured. The quantity calculation unit calculates the quantity according to the height in consideration of the shape of the container.

Description

Digital angle measurement sensor or device by the electronic circuit sensing pad in the liquid}

To measure the level and inclination of planes, analog levels have been used for a long time, using gravity to seal liquids in the main canisters to form bubbles and to keep the liquid plane perpendicular to the earth's center. Depending on the sensitivity of the main canister, one type detects inclination of 4 seconds (0.02mm / m), and two types have 10 seconds (0.05mm / m) and three types have 20 seconds (0.1mm / m) precision. The basic principle is that when the level is inclined, the bubble moves toward the higher side, so the grid line is set on the left and right sides of the bubble tube, and the position of the grid line indicated by the bubble is measured to measure the slope. An electronic or digital spirit level has also been developed to measure tilt with digitized numbers and graphics.The basic principle is to install a centrifuge to read the coordinates pointing to the centrifuge to measure the tilt. 7cm x 3cm) and weight (about 500g) and precision instruments are very expensive, but very precise, it can measure 4 seconds of inclination and is electronicized to transmit the measured values to the computer. If it can be miniaturized (for example, 1cm x 1cm x 4mm package) so that it can be mounted on a terminal, an acceleration sensor or a geomagnetic sensor that automatically converts the screen display mode of the smartphone to landscape and portrait by mounting it on the existing smartphone. In addition, it is expected to be used in place of gyro sensor. Acceleration sensor is based on the principle that electric charge is generated when acceleration is applied to piezoelectric material, and it is possible to find out the velocity and displacement by integrating it by measuring the acceleration of gravity in the 3-axis direction. It is used as a motion sensor and cannot accurately measure the horizontal plane and the tilt angle. The geomagnetic sensor crosses coils at a 90-degree angle to each other, gives a signal to one side, and receives it from the other coil. If there is no magnetic field around it, the two coils form 90 degrees. When the magnetic field is formed, the magnetic force is misaligned and the signal is induced in the receiving coil. It is used to measure the direction and can detect simple motion, but it is weak in external noise, but it is mounted on Apple's iPhone to detect motion and It is used to implement augmented reality. The gyro sensor, which is a rotational angular velocity sensor, generates a Coriolis force in the vertical direction of the rotating angle. The gyro sensor detects this vertical force and measures rotational acceleration in each direction, which is more complicated than the geomagnetic sensor and the acceleration sensor. These sensors are made of MEMS (Micro Electro Mechanical Systems) technology, making them lighter and thinner than conventional mechanical systems. The present invention can be used as a motion sensor that is expanding the range of applications, such as mobile phones, game consoles, cameras, etc. Unlike the above geomagnetic sensor, acceleration sensor, gyro sensor can measure the absolute inclination angle required for life It is about the field of providing a tilt angle sensor.

In the analog level, the glass tube is filled with liquid, and the position of the bubble is measured to measure the slope of the reference plane to be measured. On the outer wall of the glass tube, there is a means for measuring the position of the bubble electronically (for example, the color of the liquid is red and measured using a color image sensor). Alternatively, the slope may be measured by measuring the position of the bubble using conductivity. The liquid surface uses the principle of keeping it horizontal with respect to the center of the earth, and the response speed of the liquid surface when there is a change (eg shaking) of the surface to be measured by the glass tube due to the viscosity of the liquid to be sealed in the glass tube or the sealing pressure. Is determined. If the displacement of bubble is measured in glass tube and divided by unit time interval, angular velocity component is made in the corresponding direction, and if the difference of angular velocity component is divided by unit time, acceleration can be calculated. The gyro sensor currently used as a motion sensor is to measure the angular velocity of three axes. If three glass tubes are installed to correspond to each axis, the inclination angle, angular velocity and angular acceleration of the corresponding axis can be measured. In this case, it is necessary to study the viscosity of the liquid, the sealing pressure, and the characteristics of the inner wall of the glass tube so that the liquid surface does not slump. In a portable device such as a mobile phone, the volume of the sensor is very important in order to be equipped with a function of merely detecting motion (for example, changing a web browser to a landscape or portrait mode). The present invention intends to provide a means for providing a sensor for measuring the tilt angle, angular velocity, and angular acceleration of three axes by using a basic principle of sensing the height of the liquid surface as in a glass tube so that the board can be mounted on a PCB substrate.

The present invention is to replace the geomagnetic sensor, gyro sensor, acceleration sensor used in the mobile phone to provide a sensor that detects the motion while simultaneously measuring the inclination of the axis. The geomagnetic sensor indicates the direction, but is sensitive to external magnetic field changes, and the precision is inferior. In the slopes above 70 degrees, there is a limit in indicating the direction of true north, and it cannot be used to measure the inclination of the object surface. Both the gyro sensor and the acceleration sensor calculate the acceleration by measuring the force corresponding to the acceleration, and thus there is a limit in calculating the velocity and displacement components inversely. In other words, the means for measuring acceleration requires complex integration calculations to calculate speed and displacement inversely, while the means for measuring displacement simply calculates speed by dividing displacement by time and acceleration by dividing speed by time. Become. In the present invention, unlike the existing sensors to measure the displacement to measure the speed and acceleration to solve the above problems. Gyro sensors, acceleration sensors, and geomagnetic sensors all require analog circuits and convert them to digital values (eg, AD conversion). There is an advantage that is configured. In particular, analog measurement values are affected by temperature and humidity environments and contain noise components. Therefore, signal filtering and compensation must be performed by circuits or programs. The electronic level measuring the current horizontal plane calculates the inclination angle by measuring the inclination angle of the centrifugal weight toward the earth's central axis on the inclined plane.It requires a minimum space of the centrifugal weight so that the volume is large and displacement measurement such as the inclination angle is possible, As such, it is not suitable for dynamic measurement, and it is difficult to miniaturize a semiconductor package, so there is a problem that it cannot be used as a motion recognition sensor widely used in mobile phones and game machines.

In addition, the method of measuring the capacity of the vessel and tank is currently installing a buoy moving up and down according to the liquid surface and detecting the position of the buoy by means of a potential meter, etc. It is difficult to provide, so we need to provide it digitally. In particular, in the case of the fuel tank of the vehicle can be used for the purpose of informing the driving distance to measure the exact amount of fuel, especially according to the inclination angle of the vehicle, and additionally it is necessary to accurately inform the amount of fuel injected from the gas station. In addition, in order to improve driving performance in cornering, etc. in an automobile, an electronic shock absorber may be controlled by measuring tilt of four wheel shafts, but a means of measuring the shock absorber is not provided in reality. In the case of a precision machine tool, if a precise electronic level can be provided at a low cost, it can be installed on the reference plane of the machine tool and can be extended to monitor the leveling at all times. Therefore, there is a need for a new concept of inclination measuring sensor that can be made in the form of a small semiconductor package and that can digitally measure inclination in three axes.

The sensor must be made light and thin so that it can be expanded to various applications such as mounting on a mobile phone. A conductive liquid is used as the sensor means for measuring the angle of inclination and calculating the angular velocity and angular acceleration. In the case of water, the resistance is generally determined by the particles contained in the water, but it is generally known to be 1 to 2 mega ohms / cm. For example, in the case of an analog leveler in which a bubble is placed in a glass tube, a circuit board in which pads are set at regular intervals is inserted into the glass tube, and each pad is measured to determine whether the pads are in contact with each other. If you calculate it, you can know the slope. If the 3V power is momentarily applied, the resistance of water between the pads is 5 cm, and the resistance of the water is calculated to be 6 mega ohms. The current flow is about 0.5uA, so the use current is very small, so there is no risk of explosion even in the case of fuel such as gasoline. Alternatively, a method of checking whether the pads are conductive at once by installing all of the reference electrodes that apply signals next to the measurement pads is also effective. For example, when the length of the glass tube for measuring the inclination of one direction axis is 20 cm and the height direction is 2 cm, the circuit boards are provided with pads (0.1 mm pads are manufactured in current printed circuit boards) at intervals of 0.1 mm each. Using, you can measure the measurement section with 1/2000 precision (0.02 degrees). In this way, when installed in a container or a tank, it is possible to accurately measure the volume of liquid contained.If it is installed on both sides or four sides with respect to a predetermined axis, the capacity can be calculated considering the inclination of the container and tank. When applied to the tank, it is possible to measure the exact amount of fuel, it is possible to accurately calculate the distance traveled, as well as to measure the amount of fuel supplied by the main station. In the case of automobiles, it is known that fuel efficiency can be reduced by measuring more than 20% of fuel on a one-degree slope road by controlling the amount of fuel by measuring the slope of a running road. When measuring the inclination using the direction deviation of force by using the current acceleration sensor, the measurement error is too big for this purpose. In addition to the control, the height of the four-axis direction can be adjusted to improve driving performance when cornering.

By miniaturizing this and manufacturing it in the form of a semiconductor package, it is possible to replace the motion recognition sensor that recognizes the acceleration widely used in mobile phones and game machines. To this end, pads are installed on six surfaces corresponding to the X, Y, and Z axes, and partial liquid is applied. Can detect the position of the six pads in contact with the inclination, and measure the inclination in the three axial directions at the same time. By measuring the change in unit time, the velocity component is calculated, and when the speed change in unit time is calculated, the acceleration component is obtained and can be used as a motion recognition sensor. The present invention utilizes the principle that the liquid side is always perpendicular to the direction of gravity, and the pads are installed on each side (6 sides in the case of a cuboid) in a predetermined container to detect the position of the pad in contact with the liquid, By applying a very simple way to measure the tilt in the three-axis direction. Compared to the conventional analog methods, most of the measurement methods are implemented digitally, so the peripheral circuits can be easily and stably implemented.

The present invention uses a principle that the liquid surface is always perpendicular to the direction of gravity to install a printed circuit board in the measuring direction in the measuring direction, and to measure the height of the printed circuit board installed at a predetermined interval, the sensing pads are electrically connected through the liquid When an electrical signal is applied to a specific pad, electricity flows through the liquid between the pads, so that the pads are electrically connected to measure the height of the liquid contained therein. This enables accurate measurement of the volume of liquid in containers and tanks, as well as measurement of inclination at the same time, so when applied to automobile fuel tanks, it is possible to measure the exact amount of fuel in consideration of the inclination even while driving. In addition, if it is manufactured in a small package that can be applied to a motion recognition sensor, it can measure all the inclination, speed, and acceleration in the three-axis direction, which can be used in real life, and the following effects are expected.

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First, the precise amount of liquid contained in containers and fuel tanks can be measured digitally, which is advantageous in many aspects, such as accuracy, digital, and slope compensation, compared to conventional buoy detection methods.

Second, when applied to automobile fuel tanks, it is possible to measure the exact amount of fuel by correcting the inclination of the road that runs, and to increase cornering performance when controlling the electric shock pressure bar by measuring the inclination of each axis by installing on four wheel axles. Can be.

Third, when it is miniaturized in the form of a semiconductor package, it can be used for measuring the direction of movement of mobile devices such as mobile phones and game machines, and can also be applied to machine tools that need to be precisely leveled when display means are included.

1 is a photograph of a fuel tank fuel level sensor widely used.
2 is a measurement principle diagram of the analog spirit level.
3 is a product description of a widely used electronic spirit level.
4 is a principle diagram for determining the inclination angle by measuring the surface of the liquid in contact with the pad of the present invention.
5 is a configuration diagram showing an example of installing the pad and the measurement circuit of the present invention in the package.
FIG. 6 is a configuration diagram of an inclination measuring sensor for measuring inclination in one axis direction and calculating capacity in the present invention.
7 is a configuration diagram of the inclination measuring sensor for measuring the inclination in the biaxial direction and calculating the capacity in the present invention.
FIG. 8 is a configuration diagram of an inclination measuring sensor in which a pad is installed at an upper side and a lower side in the present invention to measure an inclination in a biaxial direction and calculate a capacity, thereby extending the measurement range to 180 degrees.

The present invention uses the principle that the liquid surface flowing in the centrifugal direction toward the gravity direction is always perpendicular to the direction of gravity using means to install a means in which the pads are electrically connected through the liquid at regular intervals, Principle of measuring height by applying electric signal to specific pads to flow electricity between liquids to detect pads that are electrically connected, and detecting pads that are in contact with or not contacting liquid. To the core. To achieve this, pads are formed at regular intervals according to the precision to be measured on the printed circuit board, and each pad is connected to an IC that reads whether electricity flows to the pads in a circuit. The sensing pad, which is in contact with, is electrically energized and the signal is detected, so reading the value gives the liquid surface height. Only one specific pad for supplying electricity may be installed at the bottom of the printed circuit board, or may be installed next to the sensing pad. It is preferable to install the pad next to the sensing pad to minimize the amount of current. In the case of water, the resistance is generally determined by the particles contained in the water, but it is generally known to be 1 to 2 mega ohms / cm. If you apply 3V power momentarily, the current resistance is about 0.5uA when the resistance of water is 5cm between pads, and the current resistance is about 0.5uA.However, when the distance is about 5mm, the resistance of water is 600K ohms. As long as the current flows. As described above, the sensing pads are designed on the printed circuit board at regular intervals in the length direction to be measured, and the substrates are installed in the container and the tank to measure the height of the liquid surface digitally to accurately calculate the volume of the contained liquid. Since pads can be up to 0.05mm in printed circuit boards (various forms that can print circuits such as rigid, flexible, and glass), pads formed at 0.05mm intervals can be used for 1m x 1m x 1m high tanks In this case, it can be measured in units of 0.05 liters. This is an accuracy that is impossible with conventional analog sensors, and since it is digital, there is an advantage of minimizing AD conversion and signal processing circuits separately. Most fixed tanks are installed while maintaining a horizontal plane, but a tank installed on a moving object such as a car is inclined according to the road condition, but there is no way to detect and correct them by the existing analog sensor, but it is formed on a circuit board as in the present invention. Inclination can be measured by using the sensing pads in one measuring direction to measure the liquid height at the point where the circuit board is installed. In other words, by installing two circuit boards with pads in the measuring direction in the tank and measuring the liquid height, the angle and the difference between the two points are calculated by the trigonometric function to calculate the tilted angle of the liquid surface. Calculate the container and tank slopes. When installed in four locations in the tank, the inclination of two directions (X, Y axis) is measured, and the inclination can be corrected to calculate the liquid volume. Existing electronic spirit level is limited in the inclination angle measurement range (about 45 degrees). When the sensing pads are installed on the upper and lower surfaces, the measurement range can be extended to 360 degrees, allowing angle measurement in all areas. The sensor for measuring the liquid level in this manner is not only used to measure the volume of liquid in containers and tanks, but also when the sensor and the circuit are integrated in the form of a semiconductor package. It can be used to measure and control the slope of four-axis machine tools and automobiles to be maintained at all times. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a photograph of a fuel level sensor of an automobile fuel tank, which has been widely used since the past. FIG. 2 is a measurement principle of an analog spirit level, and the inclination angle is measured by measuring a bubble position in a glass tube sealed with a ruler. 3 is a product manual of a widely used electronic spirit level, which measures the inclination angle of the centrifugal weight toward the center of the earth. The measurement range is limited to 45 degrees because the centrifugal weight is used.

4 is a principle diagram for determining the inclination angle by measuring the surface of the liquid in contact with the pad of the present invention. When the red line is a liquid plane, the angle of inclination in that plane is calculated by the trigonometric function as arctan (distance difference between two pads / distance between two pads). For example, if the distance between the pads is 0.25mm and the liquid surface is the same as the dotted line, the distance between the two pads is 10mm and the height difference between the two pads is 5mm, so the inclination becomes arctan (5/10) d = 26.6 degrees. Since printed circuit boards can print patterns and pads with 0.05mm accuracy, the measurement accuracy when forming pads in 0.1mm intervals in a 5mm x 5mm package is arctan (0.1 / 5) = 1.1 degrees, 10mm x 10mm The measurement accuracy when forming pads at 0.1 mm intervals in the package is actan (0.1 / 10) = 0.6 degrees. The measurement accuracy when forming pads at 0.05 mm intervals in a 10 cm x 1 cm package is arctan (0.05 / 100) = 0.02 degrees. To further increase the measurement accuracy, the distance between the two pads can be increased or the distance between the two pads can be narrowed more than 0.05 mm. In a printed circuit board, pads are formed in parallel rather than in series to form new pads between 0.05 mm. The precision can be increased. As the distance between the sensing pad and the power supply pad decreases, the conductivity of the liquid can be measured even at a low voltage. For example, the shape of the pad is ⊙. Or reverse configuration). The condition of the pad face should be smoothed so that there is no irregularities to prevent the liquid from dropping. To read the pads, read the value using an input port such as a microprocessor. If the number of pads is large, connect the entire pads to the buffer IC, select them, and read them. The program calculates the slope, calculates the capacity, and displays it on separate display means. It is well known that it could be developed in FPGA or ASIC instead of a microprocessor.

5 is a configuration diagram showing an example of installing the pad and the measuring circuit of the present invention in a package, the sensing pad (4) in the depth direction when measuring a simple capacity when the level is maintained to some extent, such as a fixed tank or container The height of the liquid can be measured by attaching one printed circuit board. When the sensing pads 4 are installed on six surfaces to form a package, a flexible printed circuit board (FPCB) is used to produce a developed view. All sensing pads (4) are connected to the circuit and the pad detection means (1) for detecting the voltage generated by the current flowing when the liquid is in contact, the means for calculating the slope by calculating the difference in the pad height measured on each side (2) and an external communication means 3 for communicating with other external systems or for operating the display device. 6 is a configuration diagram of the inclination measuring sensor for measuring the inclination and calculating the capacity in the uniaxial direction in the present invention, characterized in that the sensing pad is installed on both sides facing. A height difference occurs between the padded surface A (6) and the padded surface B (8) along the horizontal plane (7) of the liquid in the container and the tank or liquid partially filled and sealed. When the axial distance (5) between two surfaces is L mm, the inclination in the axial direction is obtained as arctan (pad height difference / L). Through this, the capacity of the liquid contained in the inclination can be measured. When the vehicle is inclined in the traveling direction such as an automobile fuel tank, the capacity of the fuel can be accurately measured in consideration of the inclination of the road. FIG. 7 is a configuration diagram of an inclination measuring sensor for measuring inclination and calculating capacitance in a biaxial direction in the present invention, and is characterized in that a sensing pad is installed on four facing surfaces. In the container and tank or in a liquid-packed package, the padded surface A (6), padded B (8), padded C (9) and pad The height difference occurs between the installation surface D surface 10, respectively. If the axial distance (5) between the two sides of A ~ B is L mm, the inclination of the axial direction is calculated as arctan (A ~ B pad height difference / L), and the two-axis distance between the two sides of C ~ D When (5) is M mm, the inclination in the biaxial direction is obtained by arctan (C ~ D pad height difference / L). The volume of liquid contained can be measured by compensating the slope of each direction. When the vehicle is inclined in the wheel direction along with the traveling direction, such as an automobile fuel tank, the capacity of the fuel can be accurately measured in consideration of the inclination of the road. FIG. 8 is a configuration diagram of an inclination measuring sensor in which the sensing pads are also installed on the upper and lower portions to measure the inclination in the biaxial direction and calculate the capacitance in the present invention, and the measurement range is expanded to 360 degrees. When the sensing pad is configured on the surface, the measurement problem occurs when the tilt measurement range exceeds the sensing pad installed on each surface. To solve this problem, install the A ~ B plane measuring range expansion pads connecting the sensing pads of A ~ B plane up and down, and the C ~ D plane measuring range expansion pad (12) connecting the sensing pads of C ~ D planes up and down. Install). For example, when the horizontal plane of the liquid exceeds the C plane according to the inclination, the inclination can be calculated because the C to D plane extension range expansion pad 12 on the upper surface of the liquid is detected. When configured in this form, it is possible to measure the inclination to 360 degrees, which is impossible in the existing inclination measuring device. The slope angle in the C ~ D direction is calculated by adding the number of pads detected by the upper and lower sensing pads in the horizontal plane of the liquid as shown in FIG. Calculate

In this way, in measuring the height of the liquid in the container, means for providing a means (for example, a substrate) in the container provided with a pad for communicating electricity through the liquid at a predetermined interval; Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads; It consists of a means for measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid. Means for installing means (e.g., a substrate) in the container, the means for providing a pad for communicating electricity through the liquid at a predetermined interval; Means for applying electrical signals to specific pads to measure the height to allow electricity to flow through the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid; Means for calculating the measured volume taking into account the shape of the container containing the liquid; And a means for numerically indicating the volume of the liquid may provide a container or a tank in which a sensor and a sensor are installed to detect a pad in contact with the liquid and measure the volume of the liquid contained therein. In order to consider the installed inclination, the step of setting one axis (for example, the direction of travel in the case of an automobile fuel tank) according to the use characteristics of the container; Setting two opposing faces in the container corresponding to one axis; Means for installing a means (for example, a substrate) in a container, each having a pad communicating with liquid through each surface at predetermined intervals; Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads; It consists of means for measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid. At this time, when measuring the height means for applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two sides; Taking into account the shape of the container containing the liquid, the difference between the pad height measured at two sides and the height of the pad in contact with the liquid at the two sides constituted by means of calculating the slope of the liquid side as the distance between the two sides It provides a sensor for measuring the tilt and a container or tank in which the sensor is installed or a level or tilt angle measuring device. Thereby, means for detecting the electrically connected pads by applying an electrical signal to a particular pad when trying to measure the height to flow electricity through the liquid between the pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two sides; Means for calculating the capacity in consideration of the inclination of the pad height measured at two sides in consideration of the shape of the container containing the liquid; And a means for numerically indicating the capacity to provide a container or a tank in which the sensor and the sensor are installed to detect the height of the contained liquid by detecting the pad height in contact with the liquid on two sides. At this time, by placing the container containing the liquid in the reference plane (0 degree of inclination with respect to one axis) through the means for measuring the height of the liquid contained by detecting the pads that are in contact or not in contact with the liquid on two sides; Detecting the pads in contact with or not contacting the liquid on two sides to measure the height of the contained liquid and storing the pad heights of the two sides relative to the reference plane; The pad height of the two sides measured should correspond to the zero degree of inclination and the zero calibration of the vessel. Setting two axes (for example, a tire rotation axis direction perpendicular to a traveling direction in the case of an automobile fuel tank) according to a container use characteristic to measure and correct an inclination of two axes instead of one axis; Establishing four opposing faces in the container corresponding to the two axes; Means for installing a means (for example, a substrate) in a container, each having a pad communicating with liquid through each surface at predetermined intervals; Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads; It consists of means for measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid. At this time, when measuring the height means for applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on four sides; Considering the shape of the container containing the liquid, it consists of a means for calculating the slope of the liquid plane by the distance between the two planes and the pad height difference measured on the two planes about the two axes. It provides a sensor for measuring the tilt of two axes by detecting the difference in the height of the pads, and a vessel or tank, or a level or tilt angle meter, on which the sensor is installed. In addition, means for detecting the electrically connected pads by applying an electrical signal to a specific pad to flow electricity through the liquid between the pads when trying to measure the height; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on four sides; Means for calculating the capacity in consideration of the inclination with the pad height measured at four sides in consideration of the shape of the container containing the liquid; And means for numerically indicating the dose. Placing the vessel containing the liquid in a reference plane (0 degree of inclination with respect to two axes) by means of measuring the height of the liquid contained by detecting pads in contact with or not contacting the liquid on four sides; Detecting the pads in contact with or not contacting the liquid on the four sides to measure the height of the contained liquid and storing the pad heights on the four sides relative to the reference plane; The pad height of the four sides measured should correspond to the zero degree of inclination and the zero calibration of the vessel. Setting three axes (for example, three axes for the X, Y, and Z axes) according to the container use characteristic to measure the inclination in the three axis direction; Setting six opposing faces in the container corresponding to the three axes; Means for installing a means (for example, a substrate) in a container, each having a pad communicating with liquid through each surface at predetermined intervals; Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads; It consists of means for measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid. At this time, when measuring the height means for applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not touching the liquid at six sides; Considering the shape of the container containing the liquid, it consists of means for calculating the inclination of the liquid surface with the distance between the two surfaces and the difference in pad height measured on two sides with respect to three axes. In addition, means for detecting the electrically connected pads by applying an electrical signal to a specific pad to flow electricity through the liquid between the pads when trying to measure the height; Means for detecting the height of the liquid contained by detecting pads in contact with or not touching the liquid at six sides; Means for calculating the capacity in consideration of the inclination with the pad height measured at six sides taking into account the shape of the container containing the liquid; And a means for numerically indicating the capacity of the sensor can provide a container or a tank equipped with a sensor that detects the height of the liquid contained by detecting the height of the pad in contact with the liquid on six sides. At this time, by placing the container containing the liquid in the reference plane (0 degree of inclination with respect to the three axes) through the means for measuring the height of the liquid contained by detecting the pads in contact with or not in contact with the liquid on six sides; Detecting the pads in contact with or not contacting the liquid on the six sides and measuring the height of the contained liquid and storing the pad heights of the six sides with respect to the reference plane; The zero height of the vessel should be configured to correspond to the measured height of the pads on the six sides. Setting a plurality of axes (for example, four shafts in the form of a hexagonal column) according to the characteristics of the vessel and the tank to be applied; Setting a plurality of opposing faces in the container corresponding to the plurality of axes (e.g., eight faces including the top and bottom surfaces in the case of a hexagonal column); Means for installing a means (for example, a substrate) in a container, each having a pad communicating with liquid through each surface at predetermined intervals; Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads; It consists of means for measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid. At this time, when measuring the height means for applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid in a plurality of planes; Considering the shape of the container containing the liquid consists of means for calculating the slope of the liquid surface by the difference between the pad height and the distance between the two surfaces measured on two sides with respect to the plurality of axes. In addition, means for detecting the electrically connected pads by applying an electrical signal to a specific pad to flow electricity through the liquid between the pads when trying to measure the height; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on a plurality of sides; Means for calculating a capacity in consideration of a slope with a pad height measured in a plurality of planes taking into account the shape of a container containing liquid; And a means for displaying the capacity numerically to provide a container or a tank in which a sensor and a sensor are installed to detect the height of the liquid contained by detecting the height of the pad in contact with the liquid in a plurality of planes. At this time, by placing the container containing the liquid in the reference plane (0 degree of inclination with respect to a plurality of axes) through the means for measuring the height of the liquid contained by detecting the pads in contact with or not in contact with the liquid on the plurality of surfaces; Detecting the pads in contact with or not contacting the liquid on the plurality of surfaces, measuring the height of the liquid contained therein, and storing the pad heights of the plurality of surfaces with respect to the reference plane; The zero height of the container should be configured to correspond to the measured pad height of the plural faces corresponding to 0 degrees of inclination.

In order to implement motion recognition and inclination sensors, one to three axes (eg X, Y, Z cuboids) in a sealed package are used to measure the height of the liquid on each side in a partially filled liquid sealed package. Setting pads on two sides when using as a 1-axis sensor, installing pads on 4 sides when using as a 2-axis sensor, and installing pads on 6 sides when using as a 3-axis sensor); Filling the package with a portion of empty space without filling the liquid; An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way; It consists of means for measuring the height of the liquid on the corresponding axis containing the pads that are in contact with or not contacting the liquid on each of the two to six sides. It provides a packaged sensor that measures the height with a pad. At this time, when measuring the height means for applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two to six sides; Considering the shape of the package containing the liquid, it consists of means for calculating the inclination of the liquid plane by the distance between the two planes and the difference between the pad heights measured on two planes for one to three axes, respectively. Provides a packaged sensor that detects the difference in pad height in contact with liquid and measures the inclination of one to three axes. Along with this, means for calculating the slope of the liquid plane with the distance between the two planes and the pad height difference measured at two planes with respect to one to three axes, respectively, taking into account the shape of the package containing the liquid; Means for calculating the slope of each axis as a time interval; Means for calculating the velocity for changes in the tilt of each axis: and means for calculating the acceleration for the change in velocity for each axis, measuring the height of the pad containing the liquid to determine the difference in pad height between the two and six planes in contact with the liquid. Packaged sensors are provided that detect and measure the speed and acceleration of one to three axes. If implemented in this manner, the method of detecting the pads in contact with or not contacting the liquid on two to six sides and placing a means for measuring the height of the liquid contained in the reference plane (0 degree of inclination with respect to three axes); Detecting the pads in contact with or not contacting the liquid on two to six sides and measuring the height of the contained liquid and storing the pad heights of the two to six sides relative to the reference plane; The pad height of the measured 2 to 6 sides of the pads corresponding to 0 degrees of inclination should be configured to zero the corresponding package. In this case, the means for adjusting by using the viscosity and surface tension of the liquid in the package to minimize the shaking of the liquid surface against the shaking and vibration of the package in the step of filling the sealed package with a portion of the empty space without filling the liquid ; And means for adjusting by using the sealing gas and the pressure in the package to minimize the horizontal plane of the liquid against the vibration and shaking of the package. Alternatively, it may consist of a flowing metal such as mercury instead of liquid in a sealed package. Means for correcting the average value of the shaking of the liquid surface in contact with each pad for a predetermined time in order to remove the fluctuation noise of the liquid surface by shaking and vibration of the sealed package; And a means for ignoring more than a certain level of shaking of the liquid surface (for example, shaking due to impact) within a predetermined period, and providing a sensor in a package form to compensate for shaking and vibration of the liquid. The shape of the sealed package is cylindrical; Or in square form.

In this way, in measuring the height of the liquid in the package and the container or tank, an electrical signal is applied to a specific pad to measure the height of the liquid in contact with each of the two or six faces in the package corresponding to one to three axes. Means for flowing electricity through the liquid between the pads to detect the electrically connected pads; Means for detecting the height of the liquid on the axis contained by detecting pads in contact with or not contacting the liquid on each of two to six sides; ICs and ASICs also provide a means of configuring signal processing means for circuitry with all pads and providing a means of reading electrically connected pads through a liquid in contact with the reference pads that supply electricity. Is provided. In addition, the zero point of the installed device must be calibrated by means of storing the values of the respective pads read when the liquid side is set to the fully horizontal plane. In addition, in order to measure the height of the liquid in contact with each of the two to six surfaces in the package corresponding to one to three axes, an electrical signal is applied to specific pads to flow electricity through the liquid between the pads. Means for detecting; It calculates the volume of liquid in the container or tank corresponding to each pad value read by means of measuring the height of the liquid on the corresponding axis by detecting the pads that are in contact or not in contact with the liquid on each of the two to six sides. ICs and ASICs having the function of detecting the pad height difference having the function of calculating the capacity of the liquid contained therein should be provided so that the equations and data can be stored and calculated. Ultimately, a pad that is electrically connected by applying an electrical signal to a specific pad to flow electricity through the liquid between the pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes. Means for detecting them; Equation for calculating the inclination of each axis corresponding to each pad value read by means of measuring the height of the liquid of the corresponding axis by detecting the pads that are in contact or not in contact with the liquid on each of the two to six sides; and Means for storing data to calculate the slope of each axis; And means for calculating the tilt angular velocity of each axis for a certain time; And means for calculating the slope angular acceleration of each axis over a period of time.

In addition, means for recording the maximum capacity of the volume contained in the container or tank; Detects pads that are electrically connected by applying an electrical signal to a specific pad and allowing electricity to flow through the liquid between the pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes. Means for doing so; It calculates the volume of liquid in the container or tank corresponding to each pad value read by means of measuring the height of the liquid on the corresponding axis by detecting the pads that are in contact or not in contact with the liquid on each of the two to six sides. The function of detecting the height difference of the pad installed with the alarm output terminal, characterized in that the alarm device can be operated by changing the state of the output terminal when the capacity is exceeded by using the formula and the data. It is also available in ICs and ASICs.

Sensing the flow of current, it is expected to be limited in stability issues for use in explosive liquids such as gasoline tanks. However, the current fuel level sensor uses a capacitive measurement method (such as a potential meter) that measures resistance and capacitance in moving means connected with buoys moving up and down along the liquid surface. In this case, it can be configured to be free from environmental influences such as temperature and humidity. That is, a moving means provided with a contact (for example, a contact spring contact) moving in connection with the buoy; Moving means provided with elastic contact means for moving between means (e.g., a substrate) provided with electrically conductive pads at predetermined intervals to contact the pad surface at a position corresponding to the buoy position; Means for detecting pads electrically connected to the moving means provided with a contact point using a semiconductor; It consists of a means for measuring the height of the liquid by reading the order of the pads in contact with the contacts, and a sensor for measuring the height of the liquid contained by detecting the pads in contact with a moving means that can read the position of the buoy directly as digital values It is possible to provide a container or a tank in which a sensor is installed.

1 pad detection means 2 slope calculation means
3: external communication means 4: sensing pad
5: Axial distance 6: A side with pad installed
7: horizontal plane of liquid 8: B side with pad installed
9: side C with pads 10 side D with pads
11: 2-axis distance 12: C ~ D plane measuring range expansion pad

Claims (32)

In measuring the height of the liquid in the container,
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at predetermined intervals for the pads to conduct electricity through the liquid;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
A sensor or a container or tank in which a sensor and a sensor are installed for detecting a pad in contact with a liquid and measuring the height of the liquid contained therein, wherein the pad is in contact with or not in contact with the liquid.
In measuring the height of the liquid in the container,
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at predetermined intervals for the pads to conduct electricity through the liquid;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid;
Means for calculating a capacity according to the height measured taking into account the shape of the container containing the liquid; And
Optionally configured means for numerically indicating the volume of the liquid, which detects the pad in contact with the liquid and measures the volume of the liquid contained in the container or tank in which the sensor is installed
In measuring the height of the liquid in the container,
Setting one axis (for example, the direction of travel in the case of an automobile fuel tank) according to the container usage characteristic;
Setting two opposing faces in the container corresponding to one axis;
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at a predetermined interval on each side of the pad through which the electricity is conducted;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
A sensor or a container or tank in which a sensor and a sensor are installed for detecting a pad in contact with a liquid and measuring the height of the liquid contained therein, wherein the pad is in contact with or not in contact with the liquid. Or spirit level or tilt angle measuring instrument
The method of claim 3, wherein
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two sides;
Pads in contact with the liquid on two sides characterized in that it consists of means for calculating the inclination of the liquid side with the difference between the heights of the pads measured on the two sides and the distance between the two sides , taking into account the shape of the container containing the liquid . Sensor for measuring tilt by detecting height difference and vessel or tank with installed sensor or level or tilt angle meter
The method of claim 3, wherein
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two sides;
Means for calculating the capacity in consideration of the inclination with the pad height measured at two sides taking into account the shape of the container containing the liquid; And
Optionally configured means for numerically indicating the volume of the container on which two surfaces detect the height of the pad in contact with the liquid and measure the volume of the contained liquid
The method of claim 3, wherein
By means of measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid on two sides
Placing the vessel containing the liquid in a reference plane (0 degree tilt relative to one axis);
Detecting the pads in contact with or not touching the liquid at two sides to measure the height of the contained liquid and storing the pad heights of the two sides relative to the reference plane;
A sensor and a sensor for calibrating the zero point by measuring the pad height of two surfaces containing liquids comprising the step of performing zero calibration on the container by corresponding the pad height of the measured two sides to a zero degree of inclination. Installed vessel or tank or level or tilt angle measuring instrument
In measuring the height of the liquid in the container,
Setting two axes according to the container usage characteristic (for example, a tire rotation axis direction perpendicular to the traveling direction in the case of an automobile fuel tank);
Establishing four opposing faces in a container corresponding to two axes;
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at a predetermined interval on each side of the pad through which the electricity is conducted;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
A sensor or a container or tank in which a sensor and a sensor are installed for detecting a pad in contact with a liquid and measuring the height of the liquid contained therein, wherein the pad is in contact with or not in contact with the liquid. Or spirit level or tilt angle measuring instrument
The method of claim 7, wherein
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on four sides;
Four sides characterized by a means for calculating the inclination of the liquid side with the distance between the two sides and the pad height difference measured on the two sides with respect to the two axes, taking into account the shape of the container containing the liquid. To detect the difference between the pad height in contact with the liquid and to measure the tilt of two axes
The method of claim 7, wherein
Means for applying electrical signals to specific pads to measure height to allow electricity to flow through the pads to detect electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on four sides;
Means for calculating the capacity by correcting the inclination to the pad height measured at four sides in consideration of the shape of the container containing the liquid; And
Optionally configured means of numerically indicating the volume of the container, or a tank or sensor, on which the sensor detects the height of the pad in contact with the liquid on four sides and measures the volume of the contained liquid
The method of claim 7, wherein
By means of measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid on four sides
Placing the vessel containing the liquid in a reference plane (0 degree inclination with respect to two axes);
Detecting the pads in contact with or not contacting the liquid on the four sides to measure the height of the contained liquid and storing the pad heights on the four sides relative to the reference plane;
Zero-calibration of the four sides of the liquid, characterized in that it consists of a step of zero-calibrating the vessel corresponding to the measured pad height of the four sides corresponding to 0 degrees of inclination Vessel or tank or spirit level or tilt angle measuring instrument
In measuring the height of the liquid in the container
Setting three axes (eg, three axes for the X, Y, and Z axes) according to the vessel usage characteristics;
Setting six opposing faces in the container corresponding to the three axes;
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at a predetermined interval on each side of the pad through which the electricity is conducted;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
A sensor or a container or tank in which a sensor and a sensor are installed to detect a pad in contact with a liquid and measure the height of the liquid contained therein, wherein the pad is in contact with or not in contact with the liquid. Or spirit level or tilt angle measuring instrument
The method of claim 11,
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not touching the liquid at six sides;
Six sides characterized by a means for calculating the slope of the liquid side as the distance between the two sides and the pad height difference measured on the two sides with respect to the three axes, taking into account the shape of the vessel containing the liquid. To detect the difference between the pad height in contact with the liquid and to measure the tilt of three axes
The method of claim 11,
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not touching the liquid at six sides;
Means for calculating a capacity by tilt correction to a pad height measured at six sides in consideration of the shape of the container containing the liquid; And
Optionally configured means for numerically indicating the volume of capacity.Sensors for measuring the volume of liquid contained by detecting the height of the pads in contact with the liquid on six sides.
The method of claim 11,
By means of measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid on six sides
Placing the vessel containing the liquid in a reference plane (0 degree inclination with respect to three axes);
Detecting the pads in contact with or not contacting the liquid on the six sides and measuring the height of the contained liquid and storing the pad heights of the six sides with respect to the reference plane;
The zero height correction is performed on the six sides of the container by measuring the height of the six sides of the pad corresponding to 0 degrees of inclination. Vessel or tank or spirit level or tilt angle measuring instrument
In measuring the height of the liquid in the container
Setting a plurality of axes (for example, four axes of a hexagonal column type container) according to a container usage characteristic;
Setting a plurality of opposing faces in the container corresponding to the plurality of axes (e.g., eight faces including the top and bottom surfaces in the case of a hexagonal column);
Installing means (e.g., a substrate) in the container, the means (e.g., a substrate), which is provided at a predetermined interval on each side of the pad through which the electricity is conducted;
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
A sensor or a container or tank in which a sensor and a sensor are installed to detect a pad in contact with a liquid and measure the height of the liquid contained therein, wherein the pad is in contact with or not in contact with the liquid. Or spirit level or tilt angle measuring instrument
The method of claim 15,
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid in a plurality of planes;
A plurality of surfaces comprising means for calculating the inclination of the liquid surface by the distance between the two surfaces and the height difference of the pads measured on the two surfaces with respect to the plurality of axes in consideration of the shape of the container containing the liquid To detect the height difference of the pads in contact with the liquid and to measure the tilt of a plurality of axes
The method of claim 15,
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on a plurality of sides;
Means for calculating a capacity by correcting an inclination to a pad height measured on a plurality of surfaces in consideration of the shape of a container containing liquid; And
Sensors or tanks with sensors and sensors for measuring the volume of liquid contained by detecting the height of the pads in contact with the liquid from a plurality of surfaces
The method of claim 15,
By means of measuring the height of the liquid contained by detecting pads that are in contact or not in contact with the liquid on multiple surfaces
Placing the vessel containing the liquid in a reference plane (0 degree inclination with respect to multiple axes);
Detecting the pads in contact with or not contacting the liquid on the plurality of surfaces, measuring the height of the liquid contained therein, and storing the pad heights of the plurality of surfaces with respect to the reference plane;
A sensor and a sensor for zero calibration by measuring the pad height of a plurality of surfaces containing liquids comprising the step of performing zero correction on the container by corresponding to the measured pad height of the plurality of surfaces corresponding to 0 degrees of inclination. Installed vessel or tank or level or tilt angle measuring instrument
In measuring the height of the liquid in the package
1 to 3 axes in a sealed package (for example, X, Y, Z cuboids, pads on two sides when used as a 1-axis sensor, pads on 4 sides when used as a 2-axis sensor, 6 when used as a 3-axis sensor) Setting a pad on the surface);
Filling the package with a portion of empty space without filling the liquid;
An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way;
2 to 6 sides corresponding to 1 to 3 axes, comprising means for measuring the height of the liquid on the corresponding axis containing the pads that are in contact with or not contacting the liquid on each of the 2 to 6 sides In the form of a package that measures the height of the liquid touching the pad
The method of claim 19,
Means for applying electrical signals to specific pads to measure the height to flow electricity through the liquid between the pads to detect the electrically connected pads;
Means for detecting the height of the liquid contained by detecting pads in contact with or not contacting the liquid on two to six sides;
A means for calculating the inclination of the liquid plane by the distance between the two planes and the difference between the pad heights measured at two planes for one to three axes, taking into account the shape of the package containing the liquid. Packaged sensor that measures the slope of one to three axes by detecting the difference in pad height that is in contact with the liquid on 6 surfaces
The method of claim 19,
Means for calculating the slope of the liquid plane with the distance between the two planes and the pad height difference measured in two planes about one to three axes, respectively, taking into account the shape of the package containing the liquid;
Means for calculating the slope of each axis as a time interval;
Means for calculating the rate of change in the tilt of each axis: and
Measuring the height of the pad containing the liquid characterized in that it is configured to calculate the acceleration for the change in the speed of each axis to detect the difference in the height of the pad in contact with the liquid in 2 to 6 planes Packaged sensor to measure acceleration
The method of claim 19,
By means of measuring the height of the liquid contained by detecting pads in contact with or not touching the liquid on two to six sides
Placing the package containing the liquid in a reference plane (0 degree inclination with respect to three axes);
Detecting the pads in contact with or not contacting the liquid on two to six sides and measuring the height of the contained liquid and storing the pad heights of the two to six sides relative to the reference plane;
The height of the pad containing the liquid is measured by measuring the height of the pads on the two to six sides corresponding to 0 degrees of inclination. Package type sensor that detects zero difference of pad height difference
The method of claim 19,
Filling the sealed package with some empty space without filling the liquid
To minimize the shaking of the liquid surface against the shaking and vibration of the package
Means for adjusting using the viscosity and surface tension of the liquid in the package; And
Package-type sensor that detects the difference in pad height in contact with liquid, characterized by minimizing horizontal swelling of the liquid against vibration and shaking of the package as a means of adjusting by means of sealing gas and pressure in the package
The method of claim 19,
Package-type sensor for detecting pad height differences in contact with liquids, characterized in that the liquid consists of a flowing metal such as mercury in a sealed package
The method of claim 19,
To eliminate fluctuation noise of the liquid surface by shaking and vibration of the sealed package
Means for correcting the mean value of the shaking of the liquid surface in contact with each pad for a period of time; And
Sensor in the form of a package that compensates for the shaking and vibration of the liquid, characterized in that configured as a means for ignoring more than a certain level of shaking (e.g., shaking due to impact) within the liquid surface.
The method of claim 19,
The shape of the sealed package is cylindrical; or
Package-type sensor for detecting pad height difference between liquid and contact
In measuring the height of liquids in packages and containers or tanks,
An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way;
Means for detecting the height of the liquid on the axis contained by detecting pads in contact with or not contacting the liquid on each of two to six sides;
Configure the signal processing means to connect all pads and circuits
Means for reading the pads that are electrically connected through the liquid in contact with the reference pads for supplying electricity are installed.
The method of claim 27,
IC and on-demand detection of pad height differences with zero correction function characterized in that the device zero-calibrates by means of storing the values of each pad read when the liquid side is set to the fully horizontal plane Semiconductor (ASIC)
The method of claim 27,
An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way;
It calculates the volume of liquid in the container or tank corresponding to each pad value read by means of measuring the height of the liquid on the corresponding axis by detecting the pads that are in contact or not in contact with the liquid on each of the two to six sides. ICs and ASICs that detect differences in pad heights that have the ability to calculate the volume of the contained liquid, which can be calculated by storing equations and data
The method of claim 27,
An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way;
By means of measuring the height of the liquid on the corresponding axis containing the pads that are in contact or are not in contact with the liquid on each of the two to six sides.
Stores equations and data that calculates the slope for each axis corresponding to each pad value read
Means for calculating the slope of each axis; And
Means for calculating the tilt angular velocity of each axis over a period of time; And
IC and ASIC for detecting the difference in pad height having the function of calculating the inclination of each axis, characterized in that the means for calculating the inclination angular acceleration of each axis for a certain time can be selectively calculated.
The method of claim 27,
Means for recording the maximum capacity of the volume contained in the container or tank;
An electrical signal is applied to specific pads to measure the height of the liquid in contact with each of the two to six faces in the package corresponding to one to three axes, thereby flowing electricity through the liquid between the pads to detect the electrically connected pads. Way;
It calculates the volume of liquid in the container or tank corresponding to each pad value read by means of measuring the height of the liquid on the corresponding axis by detecting the pads that are in contact or not in contact with the liquid on each of the two to six sides. The function of detecting the height difference of the pad installed with the alarm output terminal, characterized in that the alarm device can be operated by changing the state of the output terminal when the capacity is exceeded by using the formula and the data. IC and ASICs
In measuring the height of the liquid in the container,
Instead of the capacitive measurement method (for example, potential meter), which measures the resistance value and capacitance in the moving means connected with buoys moving up and down along the liquid surface
A moving means provided with a contact (eg, a contact spring contact) moving in connection with the buoy;
A means in which the moving means provided with the contact moves between the means (for example, the substrate) provided with the electrically conductive pads at predetermined intervals to come into contact with the pad surface at a position corresponding to the buoy position;
Means for detecting pads electrically connected to a moving means provided with a contact;
Sensor means for measuring the height of the liquid contained by detecting the pad in contact with the moving means equipped with the contact, characterized in that it consists of a means for measuring the height of the liquid contained by reading the order of the pad contacted with the contact

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