Liquid level detection device and vehicle

Abstract

The utility model provides a liquid level detection device and a vehicle, and relates to the technical field of liquid level detection equipment, and the liquid level detection device comprises a container, a circuit board assembly, a processing unit and an output unit. The container defines a cavity, the circuit board assembly is arranged in the cavity and connected with the container, the circuit board assembly is provided with a plurality of static induction pieces, and the static induction pieces are arranged in parallel to form an array circuit; when the preset induction area of any static induction part is immersed in the liquid, the circuit board can output a detection signal. The processing unit converts the detection signal into a liquid level signal; the output unit outputs a liquid level signal. The liquid level detection device is used for detecting the liquid level of liquid in a container, one or more detection signals are output when the liquid immerses the preset induction area of the static induction piece, the processing unit converts the detection signals into liquid level signals, the output unit outputs the signals, then real-time detection of the liquid level is achieved, and the real-time performance and accuracy of liquid level detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level detection equipment, and in particular, to a liquid level detection device and a vehicle. Background Art

[0002] A liquid level detector is a device or equipment used to measure the liquid level height in a liquid so as to display the liquid level on an instrument for monitoring the storage and use of the liquid in a container. At present, the liquid level detector drives a moving contact to move by a float, and the moving contact contacts a static contact to output a signal. When the contact force between the moving contact and the static contact is too large or too small, it will cause obstacles to the movement of the moving contact driven by the float and the induction contact of the static contact, affecting the accuracy of liquid level detection. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a liquid level detection device and a vehicle, so as to output a detection signal when the liquid submerges a preset induction area of a static induction part, and realize real-time detection of the liquid level.

[0004] A first aspect of the utility model provides a liquid level detection device, which includes a container, a circuit board assembly, a processing unit and an output unit.

[0005] The container defines a cavity, and the liquid is arranged in the cavity;

[0006] The circuit board assembly is arranged in the cavity and connected to the container. The circuit board assembly is provided with a plurality of static induction parts, and the plurality of static induction parts are connected in parallel to form an array circuit;

[0007] When the preset induction area of any one of the static induction parts is submerged in the liquid, the circuit board assembly can output one or more detection signals;

[0008] The processing unit, the signal input end of the processing unit is connected to the signal output end of the circuit board assembly, so as to convert one or more detection signals output by the circuit board assembly into a liquid level signal;

[0009] The output unit, the signal input end of the output unit is connected to the signal output end of the processing unit to output the liquid level signal.

[0010] In a possible embodiment of the utility model, when the liquid submerges the preset induction areas of the plurality of static induction parts, each preset induction area of each static induction part can correspondingly output one detection signal.

[0011] In a possible embodiment of the utility model, the plurality of detection signals are all different.

[0012] In a possible embodiment of the present utility model, a plurality of static induction elements are arranged at intervals in a first direction.

[0013] In a possible embodiment of the present utility model, each of the static induction elements includes at least two static induction sheets, and the two static induction sheets are arranged on opposite sides of the circuit board assembly.

[0014] In a possible embodiment of the present utility model, the static induction sheets are attached to the circuit board assembly, and the heights of the two relatively arranged static induction sheets are equal.

[0015] In a possible embodiment of the present utility model, the liquid level detection device further includes a base, an opening is formed at the bottom of the container, the base is arranged at the opening and closes the opening, and the circuit board assembly is inserted into the base along the first direction.

[0016] In a possible embodiment of the present utility model, the liquid level detection device further includes a sealing ring, and the sealing ring abuts between the base and the container.

[0017] In a possible embodiment of the present utility model, both the processing unit and the output unit are arranged on a side of the circuit board assembly close to the base, and the processing unit and the output unit are arranged side by side.

[0018] A second aspect of the present utility model provides a vehicle, including the liquid level detection device in any one of the above embodiments.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: A liquid level detection device and a vehicle are provided. A circuit board assembly is arranged in a container to detect the liquid level in the container. When the liquid submerges a preset induction area of the static induction element, one or more detection signals are output. The processing unit converts them into a liquid level signal and outputs the signal through the output unit, thereby realizing real-time detection of the liquid level, avoiding the situation of obstruction when using moving contact pieces and static contact pieces for inductive contact, and improving the real-time performance and accuracy of liquid level detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the liquid level detection device provided in some embodiments of the present utility model;

[0022] Figure 2 Schematic diagram of the circuit board assembly of the liquid level detection device provided in some embodiments of the present invention;

[0023] Figure 3 Shows Figure 1 Schematic diagram of the structure of part A in;

[0024] Figure 4 Circuit schematic diagram of the liquid level detection device provided in some embodiments of the present invention.

[0025] Description of main component symbols;

[0026] 100 - Liquid level detection device; 110 - Container; 111 - Cavity; 112 - Liquid; 113 - Opening; 120 - Circuit board assembly; 121 - Static induction element; 1211 - Static induction sheet; 130 - Processing unit; 140 - Output unit; 150 - Base; 151 - Sealing ring. Specific embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] Embodiment 1

[0035] Referring Figure 1 As shown, an embodiment of the present application provides a liquid level detection device 100, which includes a container 110, a circuit board assembly 120, a processing unit 130, and an output unit 140.

[0036] Specifically, in combination with Figure 1 and Figure 2As shown, the container 110 defines a cavity 111, and a liquid 112 is disposed in the cavity 111; the circuit board assembly 120 is disposed in the cavity 111 and connected to the container 110. The circuit board assembly 120 is provided with a plurality of capacitive sensors 121, and the plurality of capacitive sensors 121 are connected in parallel to form an array circuit; when the preset sensing area of any one of the capacitive sensors 121 is immersed in the liquid 112, the circuit board assembly can output one or more detection signals; the signal input end of the processing unit 130 is connected to the signal output end of the circuit board assembly 120, so that one or more detection signals output by the circuit board assembly 120 are converted into a liquid level signal; the signal input end of the output unit 140 is connected to the signal output end of the processing unit 130 to output the liquid level signal. The circuit board assembly 120 is installed in the container 110 to detect the liquid level of the liquid 112 in the container 110. When the liquid 112 immerses the preset sensing area of the capacitive sensor 121, one or more detection signals are output. The processing unit 130 converts them into a liquid level signal and the output unit 140 outputs the signal, thereby realizing the real-time detection of the liquid level.

[0037] It should be noted that with reference to Figure 4 As shown, the liquid 112 can form an induction capacitance with the preset sensing area of the capacitive sensor 121 to output a detection signal. The signal input end of the processing unit 130 is used to receive the detection signal, and can process and analyze the detection signal. In the processing unit 130, the detection signal is converted into a liquid level signal. The signal output end of the processing unit 130 is used to output the liquid level signal. Exemplarily, the processing unit 130 includes a controller. The detection signal can be an electrical signal. Of course, the detection signal can also be other signals. The liquid level signal can be a digital signal or an analog signal. The output unit 140 is used to transmit signals, and can transmit analog signals or digital transmission signals, which is not limited herein. It can be understood that the number of detection signals is multiple. The processing unit 130 can identify and process multiple detection signals. The multiple detection signals are superimposed and output and processed by the processing unit 130, or the processing unit 130 can eliminate the redundant detection signals, so that the qualified detection signals are correspondingly converted into liquid level signals, and a corresponding value of a liquid level signal is output.

[0038] The processing unit 130 includes a controller. The controller can be an integrated circuit chip with signal processing capabilities. The above-mentioned controller can be a general-purpose processor or other types of processors.

[0039] In one embodiment, specifically, as Figure 2As shown, when the liquid 112 submerges the preset induction areas of the plurality of static induction elements 121, each preset induction area of each static induction element 121 can correspondingly output a detection signal. Exemplarily, when one or more of the plurality of static induction elements 121 forming the array circuit are submerged in the liquid 112, each preset induction area of each static induction element 121 can sense the liquid 112 and correspondingly output a detection signal.

[0040] Optionally, the liquid 112 is one of gasoline, diesel, or water. The liquid 112 can also be other liquids 112 with certain conductivity. The liquid 112, as the liquid to be measured, can be used to detect the liquid level height of the liquid 112 and output a liquid level signal.

[0041] In summary, the liquid level detection device 100 is provided with a circuit board assembly 120 installed in the container 110 to detect the liquid level of the liquid 112 in the container 110. When the liquid 112 submerges the preset induction area of the static induction element 121, one or more detection signals are output. The processing unit 130 converts them into a liquid level signal and outputs the signal through the output unit 140, thereby realizing real-time detection of the liquid level, avoiding obstacles when using moving contacts and static contacts for inductive contact, and improving the real-time performance and accuracy of liquid level detection.

[0042] Embodiment 2

[0043] Reference Figures 1 to 3 As shown, an embodiment of the present application provides another liquid level detection device 100, which includes a container 110, a circuit board assembly 120, a processing unit 130, and an output unit 140.

[0044] Specifically, in combination with Figure 1 and Figure 2 As shown, the container 110 defines a cavity 111, and the liquid 112 is provided in the cavity 111; the circuit board assembly 120 is disposed in the cavity 111 and connected to the container 110. The circuit board assembly 120 is provided with a plurality of static induction elements 121, and the plurality of static induction elements 121 are connected in parallel to form an array circuit.

[0045] When the preset induction area of any static induction element 121 is immersed in the liquid 112, the circuit board assembly can output one or more detection signals; the signal input end of the processing unit 130 is connected to the signal output end of the circuit board assembly 120, so that one or more detection signals output by the circuit board assembly 120 are converted into a liquid level signal; the signal input end of the output unit 140 is connected to the signal output end of the processing unit 130 to output the liquid level signal. It is set that the circuit board assembly 120 is installed in the container 110 to detect the liquid level of the liquid 112 in the container 110. When the liquid 112 immerses the preset induction area of the static induction element 121, one or more detection signals are output. The processing unit 130 converts it into a liquid level signal and the output unit 140 outputs the signal, realizing the real-time detection of the liquid level.

[0046] It should be noted that, as Figure 4 shown, the liquid 112 can form an induction capacitance with the preset induction area of the static induction element 121 to output a detection signal. The signal input end of the processing unit 130 is used to receive the detection signal, and can process and analyze the detection signal. In the processing unit 130, the detection signal is converted into a liquid level signal, and the signal output end of the processing unit 130 is used to output the liquid level signal.

[0047] In one embodiment, specifically, as Figure 2 shown, when the liquid 112 immerses the preset induction areas of multiple static induction elements 121, each preset induction area of each static induction element 121 can correspondingly output one detection signal. Exemplarily, when one or more of the multiple static induction elements 121 constituting the array circuit are immersed in the liquid 112, the preset induction area of each static induction element 121 can perform induction with the liquid 112 and correspondingly output a detection signal. It can be understood that the number of detection signals can be multiple. The processing unit 130 can identify and process multiple detection signals, so that the multiple detection signals are superimposed and output and processed by the processing unit 130, or the processing unit 130 can eliminate redundant detection signals. By the above method, the qualified detection signals are correspondingly converted into liquid level signals, and a value of a liquid level signal corresponding to the relative liquid surface height is output.

[0048] Optionally, the multiple detection signals are all different. It can be understood that the multiple detection signals respectively correspond to the preset induction areas of different static induction elements 121, and each detection signal corresponds to a liquid level value. The liquid level values of the multiple detection signals need to be processed and identified by the processing unit 130, and finally a liquid level signal is output. Exemplarily, the liquid level signal is the maximum value among the liquid level values of the multiple detection signals.

[0049] It should be noted that, referring to Figure 1 andFigure 2 As shown, the liquid level detection device 100 has a first direction. Exemplarily, the first direction is taken as the height direction of the liquid level detection device 100. It can be understood that the above definition is only for facilitating the understanding of the relative position relationship of each part in the liquid level detection device 100, and should not be construed as a limitation to the present application.

[0050] Optionally, as Figure 2 shown, a plurality of static induction elements 121 are arranged at intervals along the first direction, that is, a plurality of static induction elements 121 can be arranged at intervals along the height direction of the liquid level detection device 100. Since the plurality of static induction elements 121 are in a parallel relationship, there will be no mutual influence between the plurality of static induction elements 121. There is a certain distance between adjacent static induction elements 121, so that the plurality of static induction elements 121 respectively correspond to different height positions. In other words, one static induction element 121 corresponds to the elevation dimension position of one circuit board assembly 120, and further the preset induction area of the static induction element 121 corresponds to output liquid level values of different elevations.

[0051] It should be noted that the liquid 112 is one of gasoline, diesel or water. The liquid 112 can also be other liquids 112 with certain conductivity. The liquid 112 as the liquid to be measured can be used to detect the liquid level height of the liquid 112 and output a liquid level signal. It can be understood that water, gasoline or diesel has conductivity, so the liquid to be measured can be coupled with the static induction element 121 to form an induction capacitance, and then output a detection signal, so as to achieve the purpose of detecting the liquid level value of the liquid to be measured.

[0052] In one embodiment, specifically, referring to Figure 1 shown, each static induction element 121 includes at least two static induction sheets 1211. The two static induction sheets 1211 are arranged on opposite sides of the circuit board assembly 120, so that the static induction element 121 can have a larger contact area with the liquid to be measured. Optionally, the static induction sheet 1211 is attached to the circuit board assembly. The heights of the two relatively arranged static induction sheets 1211 are equal. Correspondingly, the two static induction sheets 1211 are connected in series. By adopting the relatively arranged method, the recognition range of the preset induction area of the static induction element 121 is improved, and thus the sensitivity and accuracy of liquid level detection are improved.

[0053] Furthermore, the static induction sheet 1211 is integrally formed of metal. The metal material can be copper, aluminum or copper-aluminum alloy, etc. The static induction sheet 1211 has certain conductivity.

[0054] In one embodiment, specifically, in combination with Figure 1 and Figure 3As shown, the liquid level detection device 100 further includes a base 150. An opening 113 is formed at the bottom of the container 110. The base 150 is disposed at the opening 113 and closes the opening 113. Correspondingly, the base 150 is connected to the container 110 to form a closed structure, preventing the liquid 112 in the container 110 from leaking through the gap between the base 150 and the container 110. Along the first direction, the circuit board assembly 120 is inserted into the base 150, that is, the circuit board assembly 120 is mounted on the base 150. That is, the circuit board assembly 120 can be connected to an external display device through the base 150 to display the liquid level signal.

[0055] To solve the problem that liquid 112 is likely to leak at the connection position between the base 150 and the container 110, further, as Figure 3 shown, the liquid level detection device 100 further includes a sealing ring 151. The sealing ring 151 abuts between the base 150 and the container 110. In other words, the base 150 and the container 110 achieve a sealed effect through the sealing ring 151, reducing the leakage of the liquid 112 through the gap at the connection position between the base 150 and the container 110.

[0056] In one embodiment, specifically, referring to Figure 2 shown, both the processing unit 130 and the output unit 140 are disposed on the side of the circuit board assembly 120 close to the base 150, and the processing unit 130 and the output unit 140 are arranged in parallel. This enables the circuit board assembly 120 to integrate the processing unit 130, the output unit 140, and the static induction element 121. The structure is simple and compact, with a low space occupancy rate, and it will not hinder or affect the generation and processing of the detection signal, as well as the output and conversion into the liquid level signal, having better technical effects. Of course, in other embodiments, the circuit board assembly 120, the processing unit 130, and the output unit 140 can also be arranged separately.

[0057] Embodiment 3

[0058] The embodiment of the present utility model further provides a vehicle. The vehicle can be a fuel vehicle or a moped, etc., or any type of motorcycle, tricycle, or four-wheeler. It includes the liquid level detection device 100 in Embodiment 1 or Embodiment 2. The liquid level detection device 100 is applied to the fuel tank or water tank of the vehicle. For example, the vehicle can be a motorcycle, and the liquid level detection device 100 is applied to the fuel tank or water tank of the motorcycle. The vehicle including the liquid level detection device 100 has all the beneficial effects of the liquid level detection device 100, which will not be elaborated here in detail.

[0059] In all the examples shown and described herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0060] The embodiments described above merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A liquid level detection device, characterized in that: include: a container, the container defining a cavity in which a liquid is disposed; A circuit board assembly, the circuit board assembly is arranged in the cavity and connected to the container, the circuit board assembly is provided with a plurality of static induction components, and the plurality of static induction components are arranged in parallel to form an array circuit; When the preset sensing area of ​​any of the static sensing components is immersed in the liquid, the circuit board assembly can output one or more detection signals; A processing unit, wherein a signal input terminal of the processing unit is connected to a signal output terminal of the circuit board assembly so as to convert one or more detection signals output by the circuit board assembly into a liquid level signal; An output unit, wherein a signal input terminal of the output unit is connected to a signal output terminal of the processing unit to output the liquid level signal; Each of the static induction components includes at least two static induction sheets, and the two static induction sheets are arranged on opposite sides of the circuit board assembly; The static induction sheet is attached to the circuit board assembly, and the heights of the two static induction sheets arranged opposite to each other are equal.

2. The liquid level detection device according to claim 1, characterized in that: When the liquid immerses the preset sensing areas of a plurality of the static sensing elements, the preset sensing area of ​​each of the static sensing elements can output a corresponding detection signal.

3. The liquid level detection device according to claim 2, characterized in that: The plurality of detection signals are all different.

4. The liquid level detection device according to claim 1, characterized in that: A plurality of static induction components are arranged at intervals along the first direction.

5. The liquid level detection device according to any one of claims 1 to 4, characterized in that: The container further comprises a base. The bottom of the container is provided with an opening. The base is arranged at the opening and closes the opening. The circuit board assembly is plugged into the base along a first direction.

6. The liquid level detection device according to claim 5, characterized in that: A sealing ring is also included, and the sealing ring abuts between the base and the container.

7. The liquid level detection device according to claim 5, characterized in that: The processing unit and the output unit are both arranged on a side of the circuit board assembly close to the base, and the processing unit and the output unit are arranged in parallel.

8. A vehicle, characterized in that: The liquid level detection device comprises the liquid level detection device as described in any one of claims 1 to 7.

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