Adaptive cruise control system

Abstract

This utility model discloses a receiver-type automotive fuel level sensor, including an electrical box, a signal output line, and a flange. A probe rod is installed at the bottom of the electrical box, and the flange is installed on the outside of the probe rod. A monitoring and control mechanism is provided inside the probe rod, and a gauging groove is provided inside the probe rod. A float is slidably connected to the inner wall of the gauging groove. The probe rod has an oil inlet and an exhaust port. The gauging groove is connected to the external space through the oil inlet and the exhaust port. The monitoring and control mechanism includes a combined sensor, a PLC control unit, and a telescopic rod. By dynamically adjusting the opening of the exhaust port through the telescopic rod, large fluctuations in the fuel level in the gauging groove are suppressed, and the pressure in the internal space of the gauging groove above the float is increased, making the float more stable, reducing the frequency and amplitude of shaking, and reducing the displacement signal fluctuation caused by the inertia of the float, so that the fuel level signal transmitted to the instrument is more stable.

Description

Technical Field

[0001] This utility model relates to the field of oil level sensor technology, specifically a receiver-type automotive oil level sensor. Background Technology

[0002] In automotive fuel supply systems, the fuel level sensor is a key component ensuring normal vehicle operation. Its main function is to monitor the fuel level in the tank in real time and convert this information into an electrical signal, transmitting it to the vehicle's instrument panel to provide the driver with a clear indication of the remaining fuel level. The receiver-type fuel level sensor, a typical type of traditional fuel level sensor, is widely used in the automotive industry due to its simple structure and low cost. Its working principle involves a mechanical structure (such as a linkage) supporting the displacement of a float, converting the float's mechanical motion caused by changes in fuel level into an electrical signal output, thus monitoring the fuel level. However, during actual driving, conditions such as rapid acceleration, hill climbing, and bumpy rides can cause significant fluctuations in the fuel level. The float, due to its inertia, floats up and down with the fuel level, causing fluctuations in the displacement signal transmitted to the sensor via the linkage. This can even damage the internal sensor, leading to frequent fluctuations in the fuel gauge needle. This affects the driver's accurate judgment of the actual fuel level, causing inconvenience and, in extreme cases, potentially leading to a misjudgment of fuel level and a safety hazard such as running out of fuel mid-journey.

[0003] Therefore, this utility model provides a receiver-type automotive oil level sensor. Utility Model Content

[0004] This invention provides a receiver-type automotive oil level sensor, which aims to solve the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a receiver-type automotive oil level sensor, comprising an electrical box, a signal output line, and a flange. A probe is mounted on the bottom of the electrical box, and the flange is mounted on the outside of the probe. A monitoring and control mechanism is provided inside the probe, and an oil gauging groove is provided inside the probe. A float is slidably connected to the inner wall of the oil gauging groove. An oil inlet and an exhaust port are provided on the probe. The oil gauging groove communicates with the external space through the oil inlet and the exhaust port. The monitoring and control mechanism comprises a combined sensor, a PLC control unit, and a telescopic rod. The combined sensor, the PLC control unit, and the telescopic rod are electrically connected to each other. The output end of the telescopic rod is inserted into the vertical section of the exhaust port.

[0006] Preferably, the inner wall of the bottom side of the oil measuring tank is provided with a hemispherical protrusion, which contacts the bottom of the float.

[0007] Preferably, a rubber sleeve is embedded in the inner wall of the exhaust port, and the output end of the telescopic rod is slidably connected to the inner wall of the rubber sleeve.

[0008] Preferably, a variable resistor is installed inside the probe rod, a receiving connecting rod is provided at the top of the float, the receiving connecting rod is slidably connected to the inner wall of the variable resistor, and the inner wall of the variable resistor is provided with a nano-ceramic coating.

[0009] Preferably, a flat plate is installed at the top of the float, the flat plate is slidably connected to the inner wall of the oil measuring tank, and the receiving connecting rod is installed at the top of the flat plate.

[0010] Beneficial effects

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] This invention uses a telescopic rod to dynamically adjust the opening of the vent, suppressing large fluctuations in the oil level in the gauging tank, increasing the pressure inside the gauging tank above the float, making the float more stable, reducing the frequency and amplitude of swaying, reducing displacement signal fluctuations caused by inertia, making the oil level signal transmitted to the instrument more stable, avoiding frequent jumps in the oil level gauge pointer, and solving problems such as misjudgment of oil level and safety hazards caused by oil level swaying in the prior art. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a front view cross-sectional structural diagram of the present invention;

[0016] Figure 4 This is the utility model Figure 3 A magnified structural diagram of part A in the middle.

[0017] In the diagram: 1. Electrical box; 11. Signal output line; 12. Flange; 2. Detector rod; 21. Oil gauging tank; 22. Oil inlet; 23. Exhaust port; 231. Rubber sleeve; 24. Hemispherical protrusion; 25. Variable resistor; 251. Nano-ceramic coating; 3. Monitoring and control mechanism; 31. Combined sensor; 32. PLC control unit; 33. Telescopic rod; 4. Float; 41. Connecting rod; 42. Plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 The receptacle-type automotive oil level sensor includes an electrical box 1, a signal output line 11, and a flange 12. A probe 2 is installed at the bottom of the electrical box 1, and the flange 12 is installed on the outside of the probe 2. A monitoring and control mechanism 3 is installed inside the probe 2, and an oil level gauge 21 is installed inside the probe 2. A float 4 is slidably connected to the inner wall of the oil level gauge 21.

[0020] The probe rod 2 is provided with an oil inlet 22 and an exhaust port 23, and the oil measuring tank 21 is connected to the external space through the oil inlet 22 and the exhaust port 23.

[0021] The monitoring and control mechanism 3 includes a combined sensor 31, a PLC control unit 32, and a telescopic rod 33. The combined sensor 31, the PLC control unit 32, and the telescopic rod 33 are electrically connected to each other. The output end of the telescopic rod 33 is inserted into the vertical section of the exhaust port 23.

[0022] It should be noted that the combined sensor 31 described in this embodiment includes an accelerometer and a gyroscope, and the telescopic rod 33 adjusts the flow rate of the exhaust port 23.

[0023] Specifically, fuel enters the fuel gauge 21 through the fuel inlet 22. The rise and fall of the fuel level causes the float 4 to slide within the fuel gauge 21. The float 4 senses the fuel level in the tank in real time. The combined sensor 31 monitors the vehicle's attitude in real time. The combined sensor 31 can simultaneously output acceleration, angular velocity, and orientation information, comprehensively reflecting the vehicle's motion status. The signals are transmitted to the PLC control unit 32, which controls the extension and retraction of the telescopic rod 33 based on the signals, adjusting the flow rate of the exhaust port 23 and stabilizing the fuel level in the fuel gauge 21. Simultaneously, the electrical signal converted from the float's displacement is transmitted to the vehicle's instrument panel via the signal output line 11. When the vehicle... When the oil surface sloshes violently due to conditions such as rapid acceleration, climbing, or bumps, the combined sensor 31 captures the attitude change signal. The PLC control unit 32 drives the telescopic rod 33 to dynamically adjust the opening of the vent 23, suppressing large fluctuations in the oil level in the oil level tank 21, increasing the pressure in the internal space of the oil level tank 21 above the float 4, making the float 4 more stable, reducing and lowering the frequency and amplitude of sloshing, reducing the displacement signal fluctuation of the float 4 caused by inertia, making the oil level signal transmitted to the instrument more stable, avoiding frequent jumps in the oil level gauge pointer, and solving the problems of misjudgment of oil level and safety hazards caused by oil surface sloshing in the background technology.

[0024] In one embodiment of this utility model, such as Figures 1-4 As shown, a hemispherical protrusion 24 is provided on the inner wall of the bottom side of the oil measuring tank 21, and the hemispherical protrusion 24 contacts the bottom of the float 4.

[0025] It should be noted that the height of the apex of the hemispherical protrusion 24 described in this embodiment is higher than that of the oil inlet 22.

[0026] Specifically, the height of the apex of the hemispherical protrusion 24 on the bottom side of the measuring oil tank 21 is higher than that of the oil inlet 22, so that after the fuel enters the measuring oil tank 21 from the oil inlet 22, the hemispherical protrusion 24 supports the bottom of the float 4, making the initial position of the float 4 relatively stable and preventing the float 4 from blocking the oil inlet 22.

[0027] In one embodiment of this utility model, such as Figures 1-4 As shown, a rubber sleeve 231 is embedded in the inner wall of the exhaust port 23, and the output end of the telescopic rod 33 is slidably connected to the inner wall of the rubber sleeve 231.

[0028] Specifically, a rubber sleeve 231 is embedded in the inner wall of the vent hole 23, and the output end of the telescopic rod 33 slides in conjunction with the inner wall of the rubber sleeve 231. When the telescopic rod 33 extends or retracts, the ventilation area of ​​the vent hole 23 is dynamically adjusted by utilizing the elastic deformation and sealing characteristics of the rubber sleeve 231, so as to precisely control the amount of gas exchange inside and outside the oil tank 21.

[0029] In one embodiment of this utility model, such as Figures 1-4 As shown, a variable resistor 25 is installed inside the probe rod 2, and a receiving rod 41 is provided at the top of the float 4. The receiving rod 41 is slidably connected to the inner wall of the variable resistor 25, and the inner wall of the variable resistor 25 is provided with a nano-ceramic coating 251.

[0030] It should be noted that the receiving connecting rod 41 described in this embodiment senses the oil level by raising and lowering the variable resistor 25.

[0031] Specifically, when the float 4 rises and falls with the oil level in the oil tank 21, the receiving rod 41 at the top rises and falls synchronously on the inner wall of the variable resistor 25. The oil level change is sensed by changing the resistance value of the variable resistor 25 connected to the circuit. The nano-ceramic coating 251 on the inner wall of the variable resistor 25 reduces friction and wear when the receiving rod 41 slides, and the nano-ceramic coating 251 prevents oil from seeping in and causing a short circuit.

[0032] In one embodiment of this utility model, such as Figures 1-4 As shown, a flat plate 42 is installed at the top of the float 4. The flat plate 42 is slidably connected to the inner wall of the oil measuring tank 21, and the connecting rod 41 is installed at the top of the flat plate 42.

[0033] It should be noted that the receiving connecting rod 41 described in this embodiment corrects the float 4 through the plate 42.

[0034] Specifically, the plate 42 at the top of the float 4 slides along the inner wall of the oil sump 21, and the receiving rod 41 is installed at the top of the plate 42. When the float 4 rises and falls with the oil level, the plate 42 restricts the swaying and deviation of the float 4, so that the receiving rod 41 maintains a stable rising and falling trajectory. The attitude of the float 4 is corrected by the plate 42 to ensure that the rising and falling movement of the receiving rod 41 within the variable resistor 25 accurately reflects the change in oil level.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] Working principle: Fuel enters the fuel gauge 21 through the fuel inlet 22. The rise and fall of the fuel level causes the float 4 to slide within the fuel gauge 21. The float 4, via the plate 42, drives the connecting rod 41 at the top to rise and fall synchronously within the variable resistor 25. By changing the resistance value of the variable resistor 25 connected to the circuit, the change in fuel level is sensed. At the same time, the combined sensor 31 monitors the vehicle's attitude in real time, outputs acceleration, angular velocity, and orientation information, and transmits it to the PLC control unit 32. The PLC control unit 32 controls the extension and retraction of the telescopic rod 33 based on the signal. The output end of the telescopic rod 33 slides within the rubber sleeve 231 on the inner wall of the exhaust port 23. The elastic deformation and sealing characteristics of the rubber sleeve 231 are used to adjust the flow of the exhaust port 23, stabilize the fuel level in the fuel gauge 21, suppress the violent fluctuations in the fuel level caused by vehicle shaking, reduce the displacement signal fluctuations of the float 4 due to inertia, and finally transmit the stable electrical signal converted from the float displacement to the vehicle's instrument panel via the signal output line 11.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A receptacle-type automotive oil level sensor, comprising an electrical box (1), a signal output line (11), and a flange (12), characterized in that, A probe rod (2) is installed at the bottom of the electrical box (1), and a flange (12) is installed on the outside of the probe rod (2). A monitoring and control mechanism (3) is provided inside the probe rod (2), and an oil measuring tank (21) is provided inside the probe rod (2). A float (4) is slidably connected to the inner wall of the oil measuring tank (21). The probe rod (2) is provided with an oil inlet (22) and an exhaust port (23), and the oil measuring tank (21) is connected to the external space through the oil inlet (22) and the exhaust port (23); The monitoring and control mechanism (3) includes a combined sensor (31), a PLC control unit (32) and a telescopic rod (33). The combined sensor (31), the PLC control unit (32) and the telescopic rod (33) are electrically connected to each other. The output end of the telescopic rod (33) is inserted into the vertical section of the exhaust hole (23).

2. The receiver-type automotive oil level sensor according to claim 1, characterized in that, The inner wall of the bottom side of the oil sump (21) is provided with a hemispherical protrusion (24), which is in contact with the bottom of the float (4).

3. The receiving-type automotive oil level sensor according to claim 1, characterized in that, A rubber sleeve (231) is embedded in the inner wall of the exhaust hole (23), and the output end of the telescopic rod (33) is slidably connected to the inner wall of the rubber sleeve (231).

4. The receiving-type automotive oil level sensor according to claim 1, characterized in that, A variable resistor (25) is installed inside the probe rod (2), and a receiving rod (41) is provided at the top of the float (4). The receiving rod (41) is slidably connected to the inner wall of the variable resistor (25), and the inner wall of the variable resistor (25) is provided with a nano-ceramic coating (251).

5. The receiving-type automotive oil level sensor according to claim 4, characterized in that, A flat plate (42) is installed at the top of the float (4), and the flat plate (42) is slidably connected to the inner wall of the oil measuring tank (21). The receiving connecting rod (41) is installed at the top of the flat plate (42).

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