CN216283819U - Liquid level measurer and oil level meter system - Google Patents
Liquid level measurer and oil level meter system Download PDFInfo
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- CN216283819U CN216283819U CN202121700753.5U CN202121700753U CN216283819U CN 216283819 U CN216283819 U CN 216283819U CN 202121700753 U CN202121700753 U CN 202121700753U CN 216283819 U CN216283819 U CN 216283819U
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Abstract
The embodiment of the utility model discloses a liquid level measurer and an oil level meter system. This liquid level caliber includes: the buoy floats on the liquid level of the liquid to be detected. The flotation pontoon connecting rod, the one end fixed connection flotation pontoon of flotation pontoon connecting rod. The carousel, the other end of carousel connection flotation pontoon connecting rod, the carousel is the rotation under the drive of flotation pontoon connecting rod, and the rotation has the rotatory component around the horizontal direction pivot. And the rotation quantity acquisition module comprises a linear sensor, is arranged opposite to the turntable and is used for acquiring the rotation quantity of the turntable. And the data processing module is electrically connected with the rotation quantity acquisition module and is used for calculating the liquid level height of the buoy according to the rotation quantity of the turntable, the length of the connecting rod of the buoy and the absolute position of the rotation starting angle or the rotation ending angle provided by the rotation quantity acquisition module. The embodiment of the utility model reduces the measurement error of the liquid level measurer, improves the measurement precision and the resolution ratio, and can be suitable for occasions of high-precision liquid level measurement.
Description
Technical Field
The embodiment of the utility model relates to a measuring technology, in particular to a liquid level measurer and an oil level meter system.
Background
Liquid level measurement requirements have been ubiquitous in industrial production as well as in everyday life. The floating ball type liquid level measuring device is widely applied to various liquid level detection environments as a measuring device with simple structure and high reliability.
Because a plurality of switch-type elements which are arranged in parallel are mostly adopted as sensors in a common liquid level measuring device, the measuring precision is lower, and the requirement of accurate measurement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a liquid level measurer and an oil level indicator, which solve the problem of low measurement precision in the prior art, realize accurate sensing of liquid level height and achieve the effect of improving the measurement precision.
In a first aspect, an embodiment of the present invention provides a liquid level measuring device, including:
the buoy floats on the liquid level of the liquid to be detected;
one end of the buoy connecting rod is fixedly connected with the buoy;
the rotating disc is connected with the other end of the buoy connecting rod and driven by the buoy connecting rod to rotate, and the rotation has a component rotating around the rotating shaft in the horizontal direction;
the rotation quantity acquisition module comprises a linear sensor, is arranged opposite to the turntable and is used for acquiring the rotation quantity of the turntable;
and the data processing module is electrically connected with the rotation quantity acquisition module and is used for calculating the liquid level height of the buoy according to the rotation quantity of the turntable, the length of the connecting rod of the buoy and the absolute position of the rotation starting angle or the rotation ending angle provided by the rotation quantity acquisition module.
Optionally, the liquid level sensor further comprises a connecting column, and the turntable is arranged on the connecting column.
Optionally, the connecting column includes a first fixing portion located on a side wall of the first end of the connecting column, and the turntable is fixedly mounted on the first fixing portion.
Optionally, the connecting column includes a second fixing portion located at the second end of the connecting column, and the data processing module is fixedly mounted on the second fixing portion.
Optionally, the connecting column further includes a housing, a housing cavity is provided inside the housing, the turntable and/or the rotation amount acquisition module and/or the data processing module are located in the housing cavity, and the housing includes a first fixing portion and/or a second fixing portion.
Optionally, the first fixing portion has a first accommodating cavity, and the second fixing portion has a second accommodating cavity; the turntable and the rotation quantity acquisition module are positioned in the first accommodating cavity; the data processing module is positioned in the second accommodating cavity.
Optionally, the liquid level measurer further includes a circuit board, the circuit board is located in the accommodating cavity, and the rotation quantity acquisition module and/or the data processing module are integrated on the circuit board.
Optionally, the circuit board includes a first circuit board and a second circuit board, the rotation quantity acquisition module is integrated on the first circuit board, and the data processing module is integrated on the second circuit board.
Optionally, the turntable is fixedly connected with a magnet structure, the magnet structure and the rotation quantity acquisition module are arranged oppositely, and the rotation quantity acquisition module measures the height change of the liquid level according to the change of a magnetic field generated by the rotation of the magnet structure.
Optionally, the rotation quantity acquisition module is a hall type angle sensing chip.
Optionally, the rotation quantity acquisition module is a rotary digital potentiometer, and a shaft of the rotary digital potentiometer is coaxially connected with the turntable.
Optionally, the liquid level measurer further includes a watchdog, the watchdog is coupled to the data processing module, and the watchdog is configured to monitor a working condition of the data processing module, and send a reset restart signal to the data processing module when the data processing module crashes.
In a second aspect, an embodiment of the present invention further provides an oil level gauge system, including the liquid level measurer according to any one of the first aspects.
The liquid level measurer provided by the embodiment of the utility model comprises: the buoy floats on the liquid level of the liquid to be detected. The flotation pontoon connecting rod, the one end fixed connection flotation pontoon of flotation pontoon connecting rod. The rotary plate is connected with the other end of the float bowl connecting rod and driven by the float bowl connecting rod to rotate around the rotating shaft in the horizontal direction. And the rotation quantity acquisition module comprises a linear sensor, is arranged opposite to the turntable and is used for acquiring the rotation quantity of the turntable. And the data processing module is electrically connected with the rotation quantity acquisition module and is used for calculating the liquid level height of the buoy according to the rotation quantity of the turntable, the length of the connecting rod of the buoy and the absolute position of the rotation starting angle or the rotation ending angle provided by the rotation quantity acquisition module. The embodiment of the utility model solves the problem of low measurement precision of the traditional liquid level measurer using the switch type sensor, reduces the measurement error of the liquid level measurer, improves the measurement precision and the resolution ratio, and can be suitable for occasions of high-precision liquid level measurement.
Drawings
Fig. 1 is a schematic structural diagram of a liquid level measuring device according to an embodiment of the present invention;
fig. 2 is an exploded view of the liquid level measuring device shown in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element. The terms "first," "second," and the like, are used for descriptive purposes only and not for purposes of limitation, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a liquid level measuring device according to an embodiment of the present invention, and fig. 2 is an exploded schematic diagram of the liquid level measuring device shown in fig. 1, referring to fig. 1 and fig. 2, the liquid level measuring device includes:
the buoy 10, the buoy 10 floats on the liquid level of the liquid to be measured;
the buoy connecting rod 20, one end of the buoy connecting rod 20 is fixedly connected with the buoy 10;
the turntable 30 is connected with the other end of the buoy connecting rod 20, and the turntable 30 rotates under the driving of the buoy connecting rod 20 and has a component rotating around a rotating shaft in the horizontal direction;
the rotation quantity acquisition module 40, the rotation quantity acquisition module 40 includes the linear sensor, set up opposite to rotary table 30, is used for gathering the rotation quantity of the rotary table 30;
and the data processing module 50 is electrically connected with the rotation quantity acquisition module 40, and is used for calculating the liquid level height of the buoy 10 according to the rotation quantity of the turntable 30, the length of the buoy connecting rod 20 and the absolute position of the rotation starting angle or the rotation ending angle, which are provided by the rotation quantity acquisition module 40.
Wherein, the buoy 10 is a component capable of floating on the surface of the liquid to be detected; buoy connection shaft 20 is a component used to transfer mechanical changes of buoy 10 to turntable 30. The present embodiment is not limited to the characteristics of the above components, such as shape and material, which are not related to the above functions.
When the liquid level changes, the height of the float 10 at one end of the float connecting rod 20 changes along with the change of the liquid level, and drives the float connecting rod 20 to rotate, the float connecting rod 20 drives the turntable 30 to rotate, and the turntable 30 rotates under the drive of the float connecting rod 20. Alternatively, the rotation axis around which the rotation of the turntable 30 rotates may be a horizontal rotation axis, and at this time, the rotation amount of the rotation of the turntable 30 is a rotation component around the horizontal rotation axis, and the rotation component around the vertical rotation axis is zero. The rotation axis around which the turntable 30 rotates may also be deflected by a certain angle on the basis of the rotation axis in the horizontal direction, so that the rotation amount of the turntable 30 rotates includes both a component of rotation around the rotation axis in the horizontal direction and a component of rotation around the rotation axis in the vertical direction. The rotation quantity acquisition module 40 converts the mechanical signal of the rotation of the turntable 30 into an electrical signal and outputs the electrical signal to the data processing module 50, and the data processing module 50 calculates the liquid level of the buoy 10 according to the acquired rotation quantity, the length of the buoy connecting rod 20 and the initial position.
The liquid level measurer provided by the embodiment of the utility model comprises: buoy 10, buoy 10 floats on the liquid level of the liquid to be measured. The buoy connecting rod 20 is fixedly connected with the buoy 10 at one end of the buoy connecting rod 20. And the rotary disc 30 is connected with the other end of the buoy connecting rod 20, and the rotary disc 30 rotates around the rotating shaft in the horizontal direction under the driving of the buoy connecting rod 20. The turntable 30 and the pontoon connecting rod 20 can be moved together in a full or partial circular motion. The rotation amount acquisition module 40, the rotation amount acquisition module 40 includes a linear sensor, is arranged opposite to the turntable 30, and is used for acquiring the rotation amount of the turntable 30. And the data processing module 50 is electrically connected with the rotation quantity acquisition module 40, and is used for calculating the liquid level height of the buoy 10 according to the rotation quantity of the turntable 30, the length of the buoy connecting rod 20 and the absolute position of the rotation starting angle or the rotation ending angle, which are provided by the rotation quantity acquisition module 40. The embodiment of the utility model solves the problem of low measurement precision of the traditional liquid level measurer using the switch type sensor, reduces the measurement error of the liquid level measurer, improves the measurement precision and the resolution ratio, and can be suitable for occasions of high-precision liquid level measurement. In other embodiments, the level sensor further includes a connection post 60, and the turntable 30 is disposed on the connection post 60.
Wherein, because the rotary disc 30 is arranged on the connecting column 60, the rotary disc 30 can be arranged at a proper height according to actual requirements. The height of the turntable 30 may be set at the average height of the highest liquid level height and the lowest liquid level height. The rotation amplitude of the rotary disc 30 can be close to 180 degrees by matching with the buoy connecting rod 20 with a proper length, so that the rotation amplitude of the linear sensor is larger, and the measurement precision is further improved.
In other embodiments, the connecting column 60 includes a first fixing portion located on a side wall of the first end of the connecting column 60, and the rotating disc 30 is fixedly mounted on the first fixing portion.
In other embodiments, the connecting column 60 includes a second fixing portion at the second end of the connecting column 60, and the data processing module 50 is fixedly mounted on the second fixing portion.
Wherein, the turntable 30 and the linear sensor can be disposed at a first fixing portion of the lower portion of the connection column 60, and the data processing module 50 can be disposed at a second fixing portion of the upper portion of the connection column 60. The linear sensor and the data processing module 50 are connected by a cable. It is also possible to arrange the data processing module 50, the turntable 30 and the linear sensor in a first fixed portion of the lower portion of the connection column 60.
In other embodiments, the turntable 30 is fixedly connected with a magnet structure, the magnet structure is disposed opposite to the rotation quantity acquisition module 40, and the rotation quantity acquisition module 40 measures the liquid level height change according to the magnetic field change generated by the rotation of the magnet structure. The float 10 moves due to the rise/fall of the liquid level, the float 10 drives the rotary plate 30 to rotate through the float connecting rod 20, the rotary plate 30 rotates to enable the magnet 70 serving as a magnet structure to rotate, the rotating angle of the magnet 70 influences the change of the magnetic field, the change of the magnetic field is detected by the rotation quantity acquisition module 40 and is transmitted to the data processing module 50, and the data processing module 50 outputs the corresponding liquid level height. Specifically, the rotation amount acquisition module 40 may identify the angle of the magnet 70 after rotation by cutting the magnetic field, and transmit the angle signal to the MCU processor, which converts the angle signal into a corresponding signal to be transmitted to the vehicle controller through the CAN bus, or transmit a corresponding digital signal or analog signal to the vehicle instrument. The automobile instrument displays the liquid level height by receiving digital signals or analog signals transmitted by the MCU processor or the whole automobile controller.
In addition, in the above liquid level measuring device, the rotation amount collecting module 40 may be a hall type angle sensing chip; referring to fig. 1 and 2, the turntable 30 is fixedly coupled with a magnet structure, which may include a magnet 70. The magnet structure is disposed opposite to the hall angle sensor chip, and the hall angle sensor chip generates a rotation amount of the turntable 30 according to a magnetic field change generated by the rotation of the magnet structure. Specifically, the hall angle sensing chip is a CMOS hall sensor, and can output angular position information of a magnetic field parallel to the chip surface. The hall-type angle sensing chip may sense its absolute angular position as magnet 70 rotates at a corresponding position near the chip surface. An Integrated Magnetic Chip (IMC) within the chip concentrates a magnetic field acting parallel to the chip surface and produces a vertical component at the edges of the IMC structure proportional to the magnetic field, which is measured by two pairs of conventional planar Hall elements located below the IMC. The magnet structure and the surface plane of the Hall type angle sensing chip are preferably arranged at a certain distance, and the geometric centers of the magnet structure and the Hall type angle sensing chip are preferably superposed in the direction of the rotating shaft of the magnet structure. The Hall angle sensing chip has the advantages that the magnet and the Hall angle sensing chip are arranged at a certain distance and cannot be contacted with each other, so that mutual friction resistance is completely avoided, and the sensitivity of the liquid level measurer is improved; and because the Hall type angle sensing chip is a linear measuring element and the measuring accuracy is high, the accuracy of the liquid level measurer can be improved.
The working principle of the hall-type angle sensing chip can be as follows: the hall angle sensor chip divides the output PWM signal into 4096 parts, the rotation angle range of the magnet 70 is 0-360 degrees, so that 4096/360 is 11.37 parts/degree, that is, the hall angle sensor chip outputs 11.37 parts of PWM signal every time the magnet 70 rotates by 1 degree, and the data processing module 50 can obtain the rotation angle of the magnet 70 by calculating the parts of PWM signal output by the hall angle sensor chip. After the data processing module 50 obtains the angle of rotation of the magnet 70, the height of the liquid level can be deduced through a series of logic algorithms.
Alternatively, the rotation amount acquisition module 40 may also be a rotary digital potentiometer, and a shaft of the rotary digital potentiometer is coaxially connected with the turntable 30. Specifically, the rotary digital potentiometer senses the absolute rotation angle of the rotary disk 30 through the shaft and outputs a corresponding digital signal. Because the rotary digital potentiometer has the characteristic of high linearity, the precision of the liquid level measurer is improved.
The data processing module 50 and the data processing module 50 are electrically connected to the rotation quantity acquisition module 40, and are configured to calculate a liquid level height of the buoy 10 according to the rotation quantity of the turntable 30 provided by the rotation quantity acquisition module 40, the length of the buoy connecting rod 20, and an absolute position of a rotation start angle or a rotation end angle. The data processing module 50 may be an MCU, and the MCU calculates the received rotation position angle signal and the length of the buoy connecting rod 20 to obtain the liquid level height. In other embodiments, since the absolute position of the rotation angle of the turntable 30 and the liquid level height have a one-to-one mapping relationship, the mapping relationship can be measured in advance and written into the MCU, so that the MCU can obtain the liquid level height according to the angle value. The mode of determining the liquid level is more suitable for the special-shaped liquid storage tank. The specific algorithm for the liquid level height is not specifically limited in the present application, and all technical solutions satisfying the above functions should fall within the scope of the present application.
The liquid level measurer also comprises a signal conversion module, and the signal conversion module is used for converting the liquid level height information output by the MCU into a required communication signal to be sent out. For example, in a digital circuit, the signal conversion module may be an interface chip such as max232 or max 485; in an analog circuit, the signal conversion module may be an operational amplifier.
The liquid level measurer may further include a watchdog, the watchdog is coupled to the data processing module 50, and the watchdog is configured to monitor a working condition of the data processing module 50, and send a reset restart signal to the data processing module 50 when the data processing module 50 crashes. The watchdog can be a software watchdog or a hardware watchdog, for the hardware watchdog circuit, when the MCU works normally, a signal is output to the dog feeding end at intervals, the WDT is cleared to zero, if the specified time is exceeded and the dog is not fed, the WDT is timed to exceed, a reset signal is output to the MCU to reset the MCU, and the MCU is prevented from being halted. Through setting up the watchdog in order to monitor the MCU state, strengthened the reliability and the stability of this device greatly, avoided the unusual that long-time operating system is unstable to lead to.
In other embodiments, the liquid level measurer can further comprise a power supply module, the power supply module has the function of converting the voltage of the automobile battery into a power supply required by each system module, the watchdog module can detect whether the working state of the system is normal or not at any time, the power supply is restarted if the system is detected to be abnormal, and the system is reset and cleared and then is switched on again to work.
Optionally, the connecting column further includes a housing 80, a receiving cavity is provided inside the housing 80, the turntable and/or the rotation amount acquisition module 40 and/or the data processing module 50 are located in the receiving cavity, and the housing 80 includes a first fixing portion and/or a second fixing portion.
The housing 80 may include a first housing 81 and a second housing 82. The first housing 81 is configured to accommodate the rotation amount acquisition module 40, and the second housing 82 is configured to accommodate the data processing module 50. Wherein the turntable 30 can be a part of the first housing 81, and is connected with the main body of the first housing 81 through a sealing rubber ring, and can rotate relative to the main body of the first housing 81, so as to transmit the floating mechanical motion. Optionally, the hall angle sensing chip may be accommodated in the first sealed housing 81 as the rotation amount acquisition module 40, the magnet is disposed outside the first housing 81 and opposite to the hall angle sensing chip, and the changed magnetic field can pass through the first housing 81 and be sensed by the hall angle sensing chip. The rotation quantity acquisition module 40 can be better sealed by the arrangement, and the corrosion of the rotation quantity acquisition module 40 to the liquid to be detected caused by the failure of the sealing rubber ring is avoided. The housing 80 may be provided only on the first fixing portion, and the rotation amount collecting module 40 and the data processing module 50 are accommodated in the housing 80. The rotation quantity acquisition module 40 is connected with the data processing module 50 in a flying line manner. Since this embodiment has the housing 80, the electronics can be protected from the liquid being measured.
Optionally, the first fixing portion has a first accommodating cavity, and the second fixing portion has a second accommodating cavity; the turntable 30 and the rotation quantity acquisition module 40 are positioned in the first accommodating cavity; the data processing module 50 is located in the second receiving chamber.
Wherein, the turntable 30 and the rotation quantity acquisition module 40 are positioned in the first accommodating cavity; the data processing module 50 is located in the second receiving chamber. The rotation amount collection module 40 and the data processing module 50 can be protected from corrosion by or short-circuiting by external liquid.
In addition, the liquid level measurer further comprises a circuit board, the circuit board is located in the accommodating cavity, and the rotation quantity acquisition module 40 and/or the data processing module 50 are integrated on the circuit board.
Optionally, the circuit board includes a first circuit board and a second circuit board, the first circuit board is located in the first accommodating cavity, the second circuit board is located in the second accommodating cavity, the rotation amount acquisition module is integrated on the first circuit board, and the data processing module is integrated on the second circuit board.
When the rotation quantity acquisition module 40 is located at the first fixed portion, the data processing module 50 is located at the second fixed portion. The rotation amount collecting module 40 may be provided on a first circuit board, and the data processing module 50 may be provided on a second circuit board. If the rotation amount collection module 40 and the data processing module 50 are both located at the first fixing portion, the rotation amount collection module 40 and the data processing module 50 may be disposed on the same circuit board. The liquid level measurer has the advantages that assembly procedures are reduced, cost is reduced, and stability and reliability of the liquid level measurer are improved.
In other embodiments, the magnetic field angle measuring device has a structure in which a magnetic field angle measuring chip is soldered on a first circuit board (PCB), and an MCU signal processing module, a watchdog, a power supply module, and a signal conversion module are soldered on a second circuit board. The corresponding position of the magnetic field angle measurement chip is provided with a magnet 70 for providing a magnetic field, the magnet 70 is fixed on the turntable 30, and the turntable 30 is provided with a connecting rod assembly groove for connecting the buoy connecting rod 20.
Both the first housing 81 and the second housing 82 can be designed in two parts, due to production and assembly requirements. For example, referring to fig. 2, the first housing 81 may include a first housing body and a first housing lower cover, and the second housing 82 may include a second housing body and a second housing upper cover. The second fixing part is provided with a second shell body made of plastic materials, and the second fixing part and the second shell body can be connected through screws. The first fixing portion is provided with a first shell body made of plastic materials, and the first fixing portion and the first shell body can be connected in an inserting or gluing mode. The second housing body has a cylindrical recess with an open upper surface for receiving a circuit board to which the data processing module 50 is soldered. The circular second casing upper cover can be fixed on the groove opening of the second casing body and used for covering the groove opening of the second casing body so as to protect the internal circuit element. The side surface of the second shell body is provided with a hollow cylindrical wire outlet for leading out an electric wire or a wiring terminal. A sealing rubber ring can be arranged between the first shell body and the first shell lower cover, and the first shell body and the first shell lower cover are connected through threads. The round windowing part of the side wall of the first shell body is provided with a rotary disc 30, one side of the rotary disc 30, which is far away from the first shell body, is connected with the buoy connecting rod 20, and the rotary disc 30 can be connected with the buoy connecting rod 20 through screws. A magnet 70 is embedded in a cavity on one side of the rotary plate 30 close to the first housing body, and a sealing gasket is arranged between the cavity and the magnet 70 to fasten the connection between the cavity and the magnet 70. The circuit board welded with the rotation amount collecting module 40 is accommodated in the accommodating cavity formed in the first housing body, and is disposed opposite to the magnet 70. The circuit board welded with the rotation amount acquisition module 40 is connected with the circuit board welded with the data processing module 50 through a cable arranged in the connection column 60.
Based on the same utility model concept, this embodiment provides an oil level gauge system, wherein, including the liquid level measurement ware of any one as the embodiment provides above. The liquid level measuring instrument is provided with a display part and a measuring part, wherein the display part can be of any type such as pointer type or electronic type, and the measuring part adopts any one of the liquid level measuring instruments provided by the embodiments. The connection relation can be that the display part is directly electrically coupled with the liquid level measurer, the liquid level measurer is also in communication connection with the vehicle controller, and the vehicle controller transmits liquid level information to the display part. The form and the connection relation of the display part of the oil level gauge system are not limited.
The oil level gauge system is explained by the working process of two specific embodiments.
In some embodiments, the buoy senses the liquid level to rise/fall, the buoy connecting rod drives the rotary disc to rotate along with the liquid level change, the rotary disc drives the magnet to rotate, the magnetic field angle measurement chip can identify the angle of the magnet after rotation by cutting a magnetic field, an angle signal is transmitted to the MCU processor, and the MCU processor converts the angle signal into a corresponding digital signal and transmits the digital signal to the automobile instrument so as to display the liquid level height.
In other embodiments, the magnetic field angle measurement chip cuts the magnetic field signal generated by the measurement magnet to obtain a PWM signal, and sends the PWM signal to the MCU, the MCU performs corresponding software algorithm analysis on the received PWM signal and outputs the PWM signal to the signal conversion unit module, the signal conversion unit module finally performs hardware shaping and amplification processing to obtain a final analog voltage signal or a digital signal, and transmits the final analog voltage signal or the digital signal to the vehicle controller, and the vehicle controller performs appropriate processing on the received voltage signal or the digital signal to visually display the amount of oil on the vehicle oil level gauge panel.
The oil level gauge system in the above embodiment, owing to used the higher sensor of linearity for oil level gauge system resolution ratio in this application improves greatly, has consequently promoted oil level gauge system's precision.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. A liquid level measuring device, comprising:
the buoy floats on the liquid level of the liquid to be detected;
one end of the buoy connecting rod is fixedly connected with the buoy;
the rotating disc is connected with the other end of the float bowl connecting rod and driven by the float bowl connecting rod to rotate, and the rotation has a component rotating around a rotating shaft in the horizontal direction;
the rotation quantity acquisition module comprises a linear sensor, is arranged opposite to the turntable and is used for acquiring the rotation quantity of the turntable;
and the data processing module is electrically connected with the rotation quantity acquisition module and used for calculating the liquid level height of the buoy according to the rotation quantity of the turntable, the length of the buoy connecting rod and the absolute position of a rotation starting angle or a rotation ending angle, which are provided by the rotation quantity acquisition module.
2. The fluid level gauge of claim 1, further comprising a connection post, the turntable being disposed on the connection post.
3. The fluid level gauge of claim 2, wherein the connecting column includes a first fixing portion located on a sidewall of a first end of the connecting column, and the rotary plate is fixedly mounted on the first fixing portion.
4. The fluid level gauge of claim 3, wherein the connecting column includes a second fixed portion at a second end of the connecting column, the data processing module being fixedly mounted to the second fixed portion.
5. The liquid level measurer according to claim 4, wherein the connecting column further comprises a housing, an accommodating cavity is arranged inside the housing, the turntable and/or the rotation quantity acquisition module and/or the data processing module are located in the accommodating cavity, and the housing comprises the first fixing part and/or the second fixing part.
6. The fluid level gauge according to claim 5, wherein the first fixing portion has a first housing cavity, and the second fixing portion has a second housing cavity; the turntable and the rotation quantity acquisition module are positioned in the first accommodating cavity; the data processing module is positioned in the second accommodating cavity.
7. The liquid level measurer according to claim 5, further comprising a circuit board, wherein the circuit board is located in the accommodating cavity, and the rotation quantity acquisition module and/or the data processing module are integrated on the circuit board.
8. The fluid level gauge of claim 7, wherein the circuit board comprises a first circuit board and a second circuit board, the rotation amount acquisition module is integrated on the first circuit board, and the data processing module is integrated on the second circuit board.
9. The liquid level measurer according to claim 1, wherein a magnet structure is fixedly connected to the rotary table, the magnet structure is arranged opposite to the rotation quantity acquisition module, and the rotation quantity acquisition module measures the height change of the liquid level according to the change of a magnetic field generated by the rotation of the magnet structure.
10. The liquid level measurer of claim 9, wherein the rotation amount acquisition module is a hall type angle sensing chip.
11. The fluid level gauge according to claim 1, wherein: the rotation quantity acquisition module is a rotary digital potentiometer, and a shaft of the rotary digital potentiometer is coaxially connected with the turntable.
12. The fluid level gauge according to claim 1, wherein: the watchdog is coupled with the data processing module and used for monitoring the working condition of the data processing module, and when the data processing module crashes, the watchdog sends a reset restart signal to the data processing module.
13. An oil level gauge system comprising a level gauge as claimed in any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121700753.5U CN216283819U (en) | 2021-07-23 | 2021-07-23 | Liquid level measurer and oil level meter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121700753.5U CN216283819U (en) | 2021-07-23 | 2021-07-23 | Liquid level measurer and oil level meter system |
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| Publication Number | Publication Date |
|---|---|
| CN216283819U true CN216283819U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121700753.5U Active CN216283819U (en) | 2021-07-23 | 2021-07-23 | Liquid level measurer and oil level meter system |
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| Country | Link |
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| CN (1) | CN216283819U (en) |
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2021
- 2021-07-23 CN CN202121700753.5U patent/CN216283819U/en active Active
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Address after: Room 101, No. 1, East Ring 3rd Street, Jitiagang, Huangjiang Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Zhengyang Sensor Technology Co.,Ltd. Address before: Jitigang village, Huangjiang Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN ZHENGYANG ELECTRONIC MECHANICAL Co.,Ltd. |