A diesel gasoline level detection device

Abstract

The utility model provides a diesel gasoline level detection device relates to oil level detection technical field, including detection handheld casing, it is used for protecting internal element structure, is connected by annular waterproof seal seal of the upper shell and lower shell of integration forming, the inner wall of detection handheld casing is around the setting honeycomb silica gel shock absorber, is used for absorbing the drop impact, the front end surface of detection handheld casing is equipped with the emission mirror end, forms dynamic regulation precisionization through the cooperation of light adjusting assembly, light microlens and receiving reflection board drive cooperation deflection through air bag, cooperate annular photosensitive element array, real -time adaptation oil surface vibration, the fluctuation caused by inclination, solve the signal loss problem of traditional fixed angle detection, and through 850nm, 1310nm, 650nm three wavelength laser cooperation work, single detection synchronous output height, temperature, density data, make the whole efficiency improve.

Description

Technical Field

[0001] This utility model relates to the field of oil level detection technology, and in particular to a diesel and gasoline level detection device. Background Technology

[0002] As flammable and explosive liquid fuels, the accuracy and stability of diesel and gasoline level detection directly affect storage safety, metering accuracy, and supply efficiency. The flammable and explosive characteristics of diesel and gasoline make them extremely sensitive to changes in level during storage, transportation, and refueling. Inaccurate detection may lead to explosions due to excessive storage causing tank pressure exceeding limits, or trade disputes due to insufficient metering. Therefore, the accuracy and stability of level detection are not only technical indicators, but also core elements for ensuring safe, economical, and efficient production operations.

[0003] Currently, traditional diesel and gasoline level detection devices use optical detection to generate point emissions (such as point lasers or infrared point light sources) for detection. However, point detection only covers a local area of ​​the oil surface. If there are bubbles, particles, or waves caused by vehicle bumps, the detection point can easily be blocked or deviate from the actual oil level. In addition, diesel and gasoline surfaces are prone to specular reflection. After the light emitted by the point is reflected by the oil surface, the intensity of the reflected light changes drastically with the angle of the oil surface (such as changes in the oil level caused by shaking). This makes it impossible for local detection points to reflect the overall oil level. Furthermore, fluctuations in reflected light and interference from stray light can cause deviations in the level data. When the oil surface fluctuates dynamically (such as shaking the fuel tank during the experiment), the point emission light source is prone to losing the detection target, leading to data interruption or false alarms. It is also easy to lose the signal of fixed-angle detection. Utility Model Content

[0004] The purpose of this invention is to solve the problems of traditional point detection methods used for detecting oil level. However, existing point detection only covers a local area of ​​the oil surface. If there are bubbles, particles, or waves caused by vehicle bumps, the detection point can be blocked or deviate from the actual oil level. In addition, diesel and gasoline surfaces are prone to specular reflection. After the light emitted from the point is reflected by the oil surface, the intensity of the reflected light changes drastically with the angle of the oil surface (such as changes in the oil level caused by shaking). This makes it impossible for local detection points to reflect the overall oil level. Furthermore, the fluctuation of reflected light and interference from stray light can cause the liquid level data to deviate. Moreover, when the oil surface fluctuates dynamically (such as shaking the fuel tank during the experiment), the point emission light source is prone to losing the detection target, resulting in data interruption or false alarms. Therefore, a diesel and gasoline level detection device is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a diesel fuel level detection device, comprising: a handheld detection housing for protecting the internal component structure, wherein an integrally formed upper and lower housing are sealed together by an annular waterproof seal, the inner wall of the handheld detection housing is surrounded by honeycomb silicone shock absorbers for absorbing drop impacts, and a emitting mirror is mounted on the front surface of the handheld detection housing.

[0006] A light adjustment assembly is used to dynamically adjust the emission and reception angles of light during oil testing. The light adjustment assembly includes a light emitter, a light microlens, and a photosensitive element. The light emitter emits light for detecting oil. The light microlens is positioned opposite the front end of the light emitter along the first direction of the detection light axis and can be angled relative to the detection axis to change the diffuse reflection angle of the emitted light. The photosensitive element is positioned on the same side as the light microlens along the detection light axis. A curved lens is mounted on the side of the light emitter, with the convex surface of the curved lens facing the light emission direction of the light emitter. This lens is used to pre-focus the light emitted by the light emitter and project it onto the surface of the light microlens. The photosensitive element is arranged around the outer periphery of the curved lens to capture diffuse reflection light at different angles.

[0007] The display screen can rotate about the first radial direction of the detection handheld housing to adjust the tilt angle of the display screen.

[0008] Preferably, the light adjustment component further includes a micro air pump, the output end of which is connected to a multi-directional air valve tube, the multi-directional air valve tube having three output directions, and both the left and right output ends of the multi-directional air valve tube being connected to a classification one-way control valve.

[0009] Preferably, the two output ends of the classification one-way control valve are respectively connected to the first airbag and the second airbag, the first airbag and the second airbag are controlled separately by the one-way valve, and the side ends of the first airbag and the second airbag are equipped with receiving reflectors.

[0010] Preferably, the front output end of the multi-directional air valve tube is connected to a purge head, which is installed on the side of the frame surface of the transmitter end for intermittent cleaning of the transmitter end. The inner two sides of the transmitter end are fastened with fixing plates.

[0011] Preferably, a first micro guide rod is installed on the side end of the fixing plate. The first micro guide rod is connected to the bottom frame surface of the optical microlens. A rotating joint is rotatably connected to the side end of the frame, and the rotating joint is installed on the inner wall surface of the frame.

[0012] Preferably, the inside of the handheld detection housing is equipped with an integrated structure, which consists of a signal-to-data converter, a power supply, a microprocessor, and a data acquisition unit. Receivers are installed on the left and right sides of the curved lens, and the receivers are wired to the data acquisition unit and the signal-to-data converter, respectively.

[0013] Preferably, the outer surface of the detection handheld housing is provided with an anti-slip groove, the surface of the detection handheld housing is provided with a relief groove, a second micro guide rod is installed inside the relief groove, the top end of the second micro guide rod is connected to a support rotating component, the outside of the support rotating component is rotatably connected to a hinge component, and the side end of the support rotating component is connected to the surface of the back frame plate of the display screen.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, with the cooperation of the light adjustment component, dynamic adjustment is achieved. The light microlens and the receiving reflector are deflected in coordination by the airbag drive. With the help of the ring photosensitive element array, it can adapt to the fluctuations caused by oil surface vibration and tilt in real time, solving the signal loss problem of traditional fixed angle detection. Furthermore, by working in coordination with three wavelength lasers of 850nm, 1310nm and 650nm, height, temperature and density data are output simultaneously in a single detection, thereby improving the overall efficiency. Attached Figure Description

[0016] Figure 1 This utility model provides a schematic diagram of the main structure of a diesel / gasoline level detection device;

[0017] Figure 2 This utility model provides an internal cross-sectional view of a diesel / gasoline level detection device.

[0018] Figure 3 This utility model provides a schematic diagram of the optical adjustment component structure of a diesel fuel level detection device;

[0019] Figure 4 This utility model provides a schematic diagram of the display screen adjustment for a diesel / gasoline level detection device;

[0020] Figure 5 This utility model proposes a diesel / gasoline level detection device. Figure 4 A magnified structural diagram at point A.

[0021] Legend: 100, Handheld housing for detection; 200, Display screen; 300, Anti-slip groove; 400, Emitter end; 500, Light adjustment assembly; 501, Light emitter; 502, Curved lens; 503, Photosensitive element; 504, Miniature air pump; 505, Multi-directional air guide valve tube; 506, Classification one-way control valve tube; 507, First airbag; 508, Receiving reflector; 509, Fixing plate; 510, Rotating joint; 511, First miniature guide rod; 512, Light microlens; 513, Second airbag; 514, Blowing head; 515, Integrated structure; 600, Hinge; 700, Supporting rotating part; 800, Second miniature guide rod; 900, Gutter. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] To address the issue that point detection only covers a localized area of ​​the oil surface, resulting in some detection points failing to reflect the overall oil level, this embodiment proposes a technical solution: a diesel / gasoline level detection device, such as... Figure 1 and Figure 2 As shown, the device includes a handheld detection housing 100 and a light adjustment assembly 500 installed inside the handheld detection housing 100. The light adjustment assembly 500 can dynamically adjust the light emission angle and the light reception angle by forming an angle-adjustable light microlens 512, which is used to improve the detection accuracy when detecting oil products.

[0025] The specific dynamic adjustment scheme of the light adjustment component 500, such as... Figure 3 As shown, the light adjustment component 500 is used to dynamically adjust the light emission and reception angles during oil testing. The light adjustment component 500 includes a light emitter 501 (using a near-infrared laser diode, the emitted light propagates along the detection optical axis (first direction), and a curved lens 502 is fixed to the side by a metal bracket), and a light microlens 512 (such as...). Figure 3The system employs an array of microlenses, hinged to a bottom frame and a rotating joint 510 (fixed to the inner wall of the frame, allowing angle adjustment around a horizontal axis to refract the focused beam into a fan-shaped diffused light, covering the oil surface fluctuation area). It also includes photosensitive elements 503 (uniformly distributed at 60° along the outer periphery of the curved lens 502, forming a ring-shaped receiving array; the field of view of each element is set to an elevation angle of 20°, capturing diffused light from different angles to solve the signal loss problem in unidirectional reception), and a light emitter 501 for emitting light to detect oil. The optical microlens 512 extends along the light emitter 502. The first direction of the light emission axis is positioned opposite to the main detection axis and can be angled relative to change the diffuse reflection angle of the emitted light. The photosensitive element 503 and the optical microlens 512 are positioned on the same side along the detection light axis. A curved lens 502 is mounted on the side end of the light emitter 501, with the convex surface of the curved lens 502 facing the light emission direction of the light emitter 501. This is used to pre-focus the light emitted by the light emitter 501 and project it onto the surface of the optical microlens 512. The photosensitive element 503 is arranged around the outer periphery of the curved lens 502 to capture diffuse reflection light at different angles. The light adjustment assembly 500 also includes a miniature air pump 504. The output end of the miniature air pump 504 is connected to a multi-channel air guide valve tube 505. The multi-channel air guide valve tube 505 has three output directions, and both the left and right output ends of the multi-channel air guide valve tube 505 are connected to a classification one-way control valve 506. The two output ends of the classification one-way control valve 506 are respectively connected to the first airbag 507 and the second airbag 513. The first airbag 507 and the second airbag 513 are controlled independently by the one-way valve. The side ends of the first airbag 507 and the second airbag 513 are equipped with receiving reflectors 508 (the receiving reflectors 508 are shaped metal reflectors). The multi-directional air guide valve 505 divides the airflow into three directions: left, right, and front. The left or right airflow drives the first airbag 507 (left side) and the second airbag 513 (right side) respectively through the classification one-way control valve 506. When the first airbag 507 or the second airbag 513 inflates, it pushes the receiving reflector 508 to deflect around the first airbag 507 or the second airbag 513 (e.g., when the left first airbag 507 inflates). When the receiving reflector 508 deflects to the left and the second airbag 513 on the right inflates, the receiving reflector 508 deflects to the right, achieving precise angle adjustment. A purge head 514 is connected to the front output end of the multi-directional air valve pipe 505. The purge head 514 is mounted on the side of the frame surface of the transmitting mirror end 400 and is used for intermittent cleaning of the transmitting mirror end 400. Fixing plates 509 are securely connected to the inner two sides of the transmitting mirror end 400. A first micro-guide rod 511 is mounted on the side end of the fixing plate 509. The first micro-guide rod 511 is connected to the bottom frame surface of the optical microlens 512. A rotating joint 510 is rotatably connected to the side end of the frame and is mounted on the inner wall surface of the frame. An integrated structure 515 is installed inside the detection handheld housing 100.The integrated structure 515 consists of a signal-to-data converter, a power supply, a microprocessor, and a data acquisition unit. Receivers are mounted on both sides of the curved lens 502, and the receivers are wired to the data acquisition unit and the signal-to-data converter, respectively. First, the light transmitter 501 starts, simultaneously emitting three near-infrared laser beams of 850nm, 1310nm, and 650nm, which propagate along the detection optical axis. The 850nm near-infrared laser (main wavelength) is used for liquid level measurement (retaining the original TOF algorithm). The 1310nm near-infrared laser is used for temperature measurement (utilizing the absorption characteristics of oil molecules at this wavelength), and the 650nm red laser is used for density measurement (utilizing the positive correlation between oil refractive index and density, calculated through the refraction angle). After pre-focusing by the curved lens 502, the light is projected onto the optical microlens 512. The optical microlens 512 refracts the light into a 15° fan-shaped diffused light, covering the initial detection area of ​​the oil surface. Simultaneously, the surrounding... The photosensitive element 503 is activated, ready to receive light reflected from the oil surface. Receivers on both sides of the curved lens 502 simultaneously acquire the incident light intensity reference value and feed it back to the integrated structure 515. If the oil surface fluctuates due to vibration or tilt (e.g., ripples, bubbles), and the photosensitive element 503 detects a large fluctuation in reflected light intensity, the signal is transmitted to the microprocessor via the data acquisition unit. The microprocessor calculates the required compensation angle based on the fluctuation amplitude and controls the micro air pump 504 to start. The multi-directional air valve 505 supplies air to the corresponding airbags (first airbag 507 if tilted to the left, second airbag 513 if tilted to the right). That is, when the integrated structure 515 detects a high fluctuation in reflected light intensity through the photosensitive element 503 (e.g., the oil surface tilt causes a large reflection angle), the integrated structure 515 is activated. When the angle deflection is detected (degree deviation) or when an external oil level tilt signal is received, the microprocessor calculates the required compensation angle and sends a control command to the multi-directional air guide valve 505. If a leftward deflection is required, the left passage of the multi-directional air guide valve 505 opens, and the airflow enters the first airbag 507 through the classification one-way control valve 506. The first airbag 507 inflates, pushing the left side of the receiving reflector 508 upward. At this time, the second airbag 513 exhausts air through the one-way valve and remains in a relaxed state. If a rightward deflection is required, the right passage opens, and the second airbag 513 inflates, pushing the right side of the receiving reflector 508 upward. To deflect the leftward angle, the first airbag 507 exhausts air synchronously. When the target angle is reached, the microprocessor controls... With the air valve closed, the receiving reflector 508 is positioned on the reflected light path of the optical microlens 512, ensuring a stable angle. Its deflection angle matches the refraction angle of the optical microlens 512 (e.g., if the optical microlens 512 deflects to the left, the receiving reflector 508 deflects to the left simultaneously). This allows the light reflected from the oil surface to be efficiently reflected by the receiving reflector 508 to the annular photosensitive element 503, effectively solving the problem of reflected light deviating from the receiving area after the angle of the optical microlens 512 is adjusted. Simultaneously, the first micro guide rod 511 drives the optical microlens 512 to deflect synchronously, ensuring that the fan-shaped diffused light always covers the effective area of ​​the oil surface. The reflected light is guided by the receiving reflector 508 to the photosensitive element 503, achieving dynamic matching between the emission and reception angles.Finally, the reflected light signal received by the photosensitive element 503 is converted into a digital signal by a signal-to-data converter. The microprocessor calculates the liquid level parameters using an algorithm (such as the TOF algorithm), and the data is stored by the data acquisition unit. Simultaneously, the integrated structure 515 triggers the micro air pump 504 at a preset cycle (such as 30 minutes) or as needed, causing the multi-directional air valve 505 to supply air to the forward-side purge head 514. The high-pressure airflow removes oil mist and dust from the emitting mirror end 400, maintaining light transmittance.

[0026] More specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the handheld testing housing 100 is used to protect the internal component structure. It consists of an integrally molded upper and lower shell connected by a ring-shaped waterproof seal. The inner wall of the handheld testing housing 100 is surrounded by honeycomb-shaped silicone shock absorbers to absorb drop impacts. A transmitting mirror end 400 is mounted on the front surface of the handheld testing housing 100, and anti-slip grooves 300 are formed on the outer surface of the handheld testing housing 100 (e.g., ...). Figure 1 The device employs a double-row staggered diamond-shaped groove to prevent slippage even when hands are contaminated with diesel or gasoline. A groove 900 is formed on the surface of the handheld device 100, inside which a second micro-guide rod 800 is installed. The top of the second micro-guide rod 800 is connected to a support rotating component 700, which can move along the groove 900 to adjust the tilt angle of the display screen 200. A hinge 600 is rotatably connected to the outside of the support rotating component 700, and the side end of the support rotating component 700 is connected to the surface of the back frame plate of the display screen 200. First, the operator holds the anti-slip groove 300 area of ​​the handheld device 100. The diamond-shaped groove conforms to the curved surface of the fingers, and the micro-frosted surface increases friction, preventing slippage due to oily hands. If it is necessary to adjust the display screen 200... The angle causes the microprocessor to send control commands to the second micro guide rod 800, which activates the second micro guide rod 800 and pushes the display screen 200 to rotate around the hinge 600, adjusting it to a comfortable viewing angle of 0°-90° (e.g., 30° downward angle when standing, and 90° level when bending over for testing). This ensures that the damping element in the hinge 600 ensures that the display screen 200 does not shake. Then, during testing, the emitting lens end 400 is close to the observation port of the oil tank. The acrylic window protects the light path of the internal light adjustment component 500 from external impacts. In the event of an accidental drop (e.g., falling from a height onto a concrete surface), the honeycomb silicone shock absorber absorbs most of the impact energy through the deformation of the honeycomb structure, preventing the circuit components of the internal integrated structure 515 from detaching. The annular waterproof sealing ring keeps the shell sealed, preventing oil and water stains from entering the interior of the shell.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A diesel / gasoline level detection device, characterized in that, include: The detection handheld housing (100) is used to protect the internal component structure. It is made of an integrally molded upper shell and a lower shell, which are sealed together by an annular waterproof seal. The inner wall of the detection handheld housing (100) is surrounded by honeycomb silicone shock absorbers to absorb the impact of drops. The front surface of the detection handheld housing (100) is provided with a transmitting mirror end (400). A light adjustment component (500) is used to dynamically adjust the emission and reception angles of light during oil testing. The light adjustment component (500) includes a light emitter (501), a microlens (512), and a photosensitive element (503). The light emitter (501) emits light for oil testing. The microlens (512) is positioned opposite the front end of the light emitted from the light emitter (501) along the first direction of the detection light axis and can be angled relative to the detection axis to change the diffuse reflection angle of the emitted light. The photosensitive element (503) and the optical microlens (512) are arranged on the same side along the detection optical axis. A curved lens (502) is installed on the side end of the light emitter (501). The convex surface of the curved lens (502) faces the light emission direction of the light emitter (501) and is used to pre-focus the light emitted by the light emitter (501) and project it onto the surface of the optical microlens (512). The photosensitive element (503) is arranged around the outer periphery of the curved lens (502) and is used to capture diffuse reflected light at different angles. The display screen (200) is rotatable about a first radial direction of the detection handheld housing (100) to adjust the pitch angle of the display screen (200).

2. The diesel / gasoline level detection device according to claim 1, characterized in that: The light adjustment component (500) also includes a micro air pump (504), the output end of which is connected to a multi-directional air valve tube (505), the multi-directional air valve tube (505) has three output directions, and the left and right output ends of the multi-directional air valve tube (505) are connected to a classification one-way control valve (506).

3. The diesel / gasoline level detection device according to claim 2, characterized in that: The two output ends of the classification one-way control valve (506) are respectively connected to the first airbag (507) and the second airbag (513). The first airbag (507) and the second airbag (513) are controlled by the one-way valve. The side ends of the first airbag (507) and the second airbag (513) are equipped with receiving reflectors (508).

4. The diesel / gasoline level detection device according to claim 3, characterized in that: The front output end of the multi-directional air valve tube (505) is connected to a purge head (514). The purge head (514) is installed on the side of the frame surface of the transmitter end (400) for intermittent cleaning of the transmitter end (400). Fixing plates (509) are fastened to the inner two sides of the transmitter end (400).

5. The diesel / gasoline level detection device according to claim 4, characterized in that: The side end of the fixing plate (509) is provided with a first micro guide rod (511), the first micro guide rod (511) is connected to the bottom frame surface of the optical microlens (512), and the side end of the frame is rotatably connected with a rotating joint (510), the rotating joint (510) is installed on the inner wall surface of the frame.

6. The diesel / gasoline level detection device according to claim 1, characterized in that: The handheld detection housing (100) is equipped with an integrated structure (515), which consists of a signal-to-data converter, a power supply, a microprocessor, and a data acquisition unit. Receivers are installed on the left and right sides of the curved lens (502), and the receivers are wired to the data acquisition unit and the signal-to-data converter, respectively.

7. The diesel / gasoline level detection device according to claim 1, characterized in that: The outer surface of the handheld detection housing (100) is provided with an anti-slip groove (300), and the surface of the handheld detection housing (100) is provided with a relief groove (900). A second micro guide rod (800) is installed inside the relief groove (900). The top end of the second micro guide rod (800) is connected to a support rotating part (700). The outside of the support rotating part (700) is rotatably connected to a hinge (600). The side end of the support rotating part (700) is connected to the surface of the back frame plate of the display screen (200).

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