TWM628467U - Liquid fuel capacity detection device - Google Patents

Abstract

A liquid fuel capacity detection device comprises: a casing, a fulcrum part, a sensing part and a control circuit. The housing has a front side and a back side and provides an accommodating space. The fulcrum portion is protrudingly provided on the back side. The sensing part has a sensor, and the sensing part at least partially protrudes from the back side. The control circuit is used to control the sensor to detect the liquid fuel capacity, and to generate a wireless report signal to the external device accordingly. When the liquid fuel capacity detection device is subjected to the force toward the side of the liquid fuel container, which is a metal container, and passes through the back side to stand on the side, the back side uses the fulcrum part as the fulcrum to form a lever structure, and the force toward the side acts on the side. Next, make the sensing part protruding from the back side abut against the side surface.

Description

Liquid fuel capacity detection device

This creation is about a capacity detector, especially a liquid fuel capacity detection device.

For people's life or business, commercially available gas fuels such as liquefied petroleum gas (commonly known as barreled gas) that are retailed in barrels are convenient fuel sources. As gas barrels traditionally use steel cylinders, users cannot correctly grasp the remaining amount and often need to wait until they are exhausted before notifying suppliers to replace them.

In order to measure the volume of liquid fuel such as high-pressure liquefied gas fuel in a container, in addition to the traditional method of a pressure gauge, the industry has gradually developed sensors for measurement. For example, there is a hand-held gas capacity detector on the market. Using the principle of ultrasonic waves, the user holds the gas capacity detector and places it horizontally on the side of the gas barrel to find out whether there is any remaining gas in the gas barrel within a few seconds. . In addition, there are wireless gas capacity detectors on the market, which also use the principle of ultrasonic waves, and are suitable for being installed on the bottom surface of barreled gas to detect the remaining amount in the gas barrel. The above two gas volume detectors are suitable for the liquid level display of steel and aluminum liquefied petroleum gas cylinders, but not for plastic gas cylinders.

However, the hand-held gas capacity detector is suitable for the occasions where the gas barrels are detected individually by manual method, such as confirming the remaining amount of the gas barrels before going out for outdoor activities, for a large number of gas barrels or business use scenarios , can only be detected individually and cannot be automatically detected. As for the wireless gas capacity detector, it must be installed on the bottom surface of the gas barrel, so it is not easy to tell whether the gas barrel has a detector installed or not from the appearance. Install, maintain, remove The gas barrels need to be flipped during operation, which causes operational difficulties and increases the required time and cost, especially for the usage scenarios where there are a large number of gas barrels, a wide distribution area, or business use.

One of the purposes of this creation is to propose a liquid fuel capacity detection device, which is suitable for detecting the remaining amount of liquid fuel in a metal container.

In order to achieve at least the above-mentioned purpose, the present invention proposes a liquid fuel capacity detection device for detecting the liquid fuel capacity of a liquid fuel container. The liquid fuel capacity detection device includes: a casing, a fulcrum portion, a sensor A measuring part and a control circuit. The casing has a front side and a back side facing away from the front side, and provides an accommodating space. The fulcrum portion has at least one protrusion, and the fulcrum portion is protrudingly provided on the back side. The sensing portion has a sensor, and the sensing portion at least partially protrudes from the back side. The control circuit is disposed in the accommodating space and is electrically coupled with the sensor, and is used for controlling the sensor to detect the liquid fuel capacity and generate a wireless report signal to an external device accordingly. The liquid fuel capacity detection device is configured to detect the liquid fuel capacity of the liquid fuel container through the back side, wherein when the liquid fuel capacity detection device is subjected to a force toward one side of the liquid fuel container, the liquid fuel container is penetrated When the back side rests on the side surface, the back side uses the fulcrum portion as a fulcrum to form a lever structure, and the lever structure under the action of the force toward the side side makes the sensor protruding from the back side The part abuts on this side.

In an embodiment of the present invention, the sensor is an ultrasonic sensor.

In an embodiment of the present invention, the liquid fuel capacity detection device further includes a magnetic attraction portion, the magnetic attraction portion has a magnetic body and is disposed on or near the back side, and the magnetic attraction portion is used to make the the liquid When the liquid fuel capacity detection device is adsorbed on the side surface through the magnetic attraction portion, the liquid fuel capacity detection device is placed on the side surface by the force toward the side surface.

In an embodiment of the present invention, the magnetic attraction portion is disposed on the fulcrum portion.

In an embodiment of the present invention, the magnetic attraction portion and the fulcrum portion are detachably disposed.

In an embodiment of the present invention, the liquid fuel capacity detection device further includes a groove portion, and the groove portion is disposed on the back side.

In an embodiment of the present invention, the groove portion is disposed between the fulcrum portion and the sensing portion.

In an embodiment of the present invention, the sensing portion further has an elastic layer, and the elastic layer is used for abutting against the side surface.

In an embodiment of the present invention, the control circuit includes: a control module and a wireless communication module. The control module is electrically coupled to the sensor and used to control the sensor to detect liquid fuel capacity. The wireless communication module is electrically coupled to the sensor, and generates the wireless report signal to an external device according to the liquid fuel capacity detection.

In an embodiment of the present invention, the liquid fuel container is a liquefied petroleum gas gas barrel.

In an embodiment of the present invention, the front side is configured to be suitable for binding a strap on the side surface of the liquid fuel container.

As above, in the embodiment of the liquid fuel capacity detection device, if the ultrasonic sensor is used to realize the sensor, under the action of the aforementioned lever structure, the sensing portion obtains a force abutting on the side surface As a result, the echo received by the sensing unit has good quality, that is, the actual measurement result can be reflected stably and accurately. In this way, the liquid fuel capacity detection device is more practical and accurate.

1. 1A~1F: liquid fuel capacity detection device

10: Shell

11, 11A, 11B: Front side

12, 12A, 12B: back side

13: accommodating space

20, 20A, 20B, 20F: fulcrum part

30, 30A, 30B: Sensing part

31: Sensor

32F: Elastic layer

40: Control circuit

50A, 50B: Magnetic part

51: Magnetic body

60A, 60B: groove part

90: Liquid fuel container

91: Side

92: weld bead

100: Strap

500: Control circuit

510: Control Module

520: Wireless communication module

530: Interface Module

600: button

610: Display light

701~704: Protrusion

F: Force towards the side

FIG. 1A is a schematic diagram of an embodiment of a liquid fuel capacity detection device.

FIG. 1B is a schematic structural diagram of an embodiment of a liquid fuel capacity detection device.

FIG. 2A is a schematic diagram of an embodiment of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 2B is a schematic diagram of another embodiment of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 3A is a schematic diagram of an embodiment of the liquid fuel capacity detection device based on FIG. 1 disposed in a liquid fuel container.

FIG. 3B is a schematic diagram of another embodiment of the liquid fuel capacity detection device based on FIG. 1 disposed in a liquid fuel container.

FIG. 3C is a schematic diagram of yet another embodiment of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 4 is a schematic diagram of an embodiment of the back side of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 5 is a circuit block diagram of an embodiment of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 6 is a schematic diagram of an embodiment of the front side of the liquid fuel capacity detection device based on FIG. 1 .

FIG. 7A is a schematic diagram of an embodiment of a fulcrum portion of the liquid fuel capacity detection device based on FIG. 1 .

7B is a schematic diagram of an embodiment of a fulcrum portion of the liquid fuel capacity detection device based on FIG. 1 .

7C is a schematic diagram of an embodiment of a fulcrum portion of the liquid fuel capacity detection device based on FIG. 1 .

7D is a schematic diagram of an embodiment of a fulcrum portion of the liquid fuel capacity detection device based on FIG. 1 .

In order to fully understand the purpose, features and effects of this creation, the following specific examples and accompanying drawings are used to describe this creation in detail. The description is as follows: Various problems of the wireless gas capacity detector on the bottom surface of the gas tank, when developing the detector installed on the side of the liquid fuel container (such as a gas barrel), it was further discovered that if only the sensor of the capacity detector is directly When it is placed against the side of the liquid fuel container in a flat manner, there may be a gap between the sensor and the side or the sensor is not stable enough against the side, which may cause the quality of the read signal obtained by the capacity detector to be different. Stable or poor issues, which may cause the capacity detector to misjudgment. For example, when the volume detector is implemented with an ultrasonic sensor, the sensing conditions may be unstable, such as poor or unstable echo quality.

In order to solve the problem of unstable or poor quality of the read signal obtained by the capacity detector, the creator of this case developed the liquid fuel capacity detection device of the present invention. Please refer to FIG. 1A , which is a schematic diagram of an embodiment of a liquid fuel capacity detection device. FIG. 1B is a schematic structural diagram of an embodiment of a liquid fuel capacity detection device.

As shown in FIG. 1A and FIG. 1B , the liquid fuel capacity detection device 1 is used for detecting the liquid fuel capacity of a liquid fuel container 90 . The liquid fuel capacity detection device 1 includes: a casing 10 and a fulcrum part 20 , a sensing part 30 and a control circuit 40 .

The casing 10 has a front side 11 and a back side 12 facing away from the front side 11 , and provides an accommodating space 13 .

The fulcrum portion 20 has at least one protrusion, and the fulcrum portion 20 is arranged protrudingly on the back side 12 .

The sensing portion 30 has a sensor 31 , and the sensing portion 30 at least partially protrudes from the back side 12 . In implementation, depending on the size of the sensor 31, the sensing portion 30 may be configured to be partially disposed in the accommodating space space 13 and partially protrude from the backside 12, as shown in FIG. 1B; however, the implementation of the sensing portion 30 is not limited by this example.

The control circuit 40 is disposed in the accommodating space 13 and is electrically coupled to the sensor 31, and is used to control the sensor 31 to detect the liquid fuel capacity, and to generate a wireless report signal to the sensor 31 accordingly. external device.

As shown in FIG. 1A and FIG. 1B , the liquid fuel capacity detection device 1 is configured to detect the liquid fuel capacity of the liquid fuel container 90 through the back side 12 , wherein when the liquid fuel capacity detection device 1 receives When a force (represented by F in the figure) toward one side surface 91 of the liquid fuel container 90 passes through the back side 12 and rests on the side surface 91 , the back side 12 uses the fulcrum portion 20 as a fulcrum to form a lever Structure, the lever structure makes the sensing portion 30 protruding from the back side 12 abut against the side surface 91 under the action of the force F toward the side surface 91, so as to facilitate the detection of the liquid fuel capacity.

Therefore, the sensing conditions obtained by the liquid fuel capacity detection device 1 for detecting the liquid fuel capacity of the liquid fuel container 90 through the back side 12 are better than implementing the capacity sensor only for sensing The sensor is placed directly against the side of the container in a flat manner to sense the condition. For example, the liquid fuel in the liquid fuel container 90 may be high pressure liquid fuel, such as liquefied petroleum gas, or general liquid fuel.

In an embodiment of the liquid fuel capacity detection device 1 , if the sensor 31 is implemented by an ultrasonic sensor, under the action of the aforementioned lever structure, the sensing portion 30 can get close to the side 91 . The force acting on the sensor unit 30 makes the echo received by the sensing unit 30 have good quality, that is, it can stably and accurately reflect the actual measurement result. In this way, the liquid fuel capacity detection device 1 is more practical and accurate.

In addition, the position of the side surface 91 of the liquid fuel container 90 corresponding to the installation position of the aforementioned sensing portion 30 will affect the judgment criterion of the remaining amount of the liquid fuel container 90 . For example, when the liquid When the liquid level of the liquid fuel container 90 is higher than the position of the sensing part 30, the liquid fuel capacity detection device 1 can be configured to send a wireless report signal to represent that the remaining amount is higher than a threshold; when the liquid level of the liquid fuel container 90 When the surface is located at the position of the sensing portion 30, the liquid fuel capacity detection device 1 can be configured to send a wireless reporting signal to represent that the remaining amount has reached the threshold. In addition, optionally, when the liquid level of the liquid fuel container 90 is lower than the position of the sensing portion 30, the liquid fuel capacity detection device 1 can be configured to send a wireless report signal to represent that the remaining amount is lower than the position of the sensing portion 30. Threshold alerts.

When the liquid fuel capacity detection device 1 is implemented based on the structure of FIG. 1 , the relative positions of the fulcrum portion 20 and the sensing portion 30 on the backside 12 can be configured according to the requirements of the threshold, so that the sensing portion protruding from the backside 12 The measuring part 30 can be close to a suitable position on the side of the liquid fuel container to be detected, so as to facilitate the detection of the liquid fuel capacity. In this way, the control circuit 40 can be correspondingly configured to appropriately send a wireless report signal according to the change of the data read by the sensor 31 to notify the external device of the state of the liquid level of the liquid fuel container or to give an alarm in time. .

In order to realize the aforementioned force F toward the side of the liquid fuel container to be detected, the liquid fuel capacity detection device 1 may be further configured with a corresponding mechanism to generate the force F toward the side, or cooperate with the outside to generate the force F toward the side institutions to achieve. The aforementioned force F toward the side is used to make the liquid fuel capacity detection device 1 rest on the side through the back side 12 , thereby forming the aforementioned lever structure to facilitate the detection of the liquid fuel capacity. In some embodiments, the aforementioned force F toward the side can be achieved by one or a combination of two or more applicable forces such as magnetic force, pulling force, adhesive force, or adsorption force. Further examples will be given below.

In the following, the liquid fuel container 90 is a metal container, and the sensor of the liquid fuel capacity detection device is an ultrasonic sensor for illustration.

Please refer to FIG. 2A , which is a schematic diagram of an embodiment of the liquid fuel capacity detection device 1 based on FIG. 1 . In FIG. 2A , the liquid fuel capacity detection device 1A is an embodiment based on the structure of FIG. 1 , and in addition to the components corresponding to the liquid fuel capacity detection device 1 , it further includes a magnetic attraction portion 50A, the magnetic attraction The portion 50A has a magnetic body 51 and is disposed on the back side 12A opposite to the front side 11A or close to the back side 12A. When adsorbed on the side surface 91 of a liquid fuel container 90 , the liquid fuel capacity detecting device 1A is placed on the side surface 91 by the force toward the side surface 91 .

In one embodiment, the magnetic attraction portion 50A can be implemented on the structure of the fulcrum portion 20A of the liquid fuel capacity detection device 1A. As shown in FIG. 2A , the fulcrum portion 20A has one (or more) protrusions and has an extending structure and is detachably mounted on the back side 12A, and the magnetic body 51 is disposed on the extension portion of the fulcrum portion 20A to form a magnetic Suction part 50A.

In another embodiment, the fulcrum portion 20A can also be implemented to have magnetic properties at least in part or in whole to realize the magnetic attraction portion 50A. In addition, in other embodiments, the fulcrum portion 20A and the magnetic attraction portion 50A may also be provided separately.

In FIG. 2A , the back side 12A uses the protrusion of the fulcrum portion 20A as a fulcrum to form a lever structure. The lever structure makes the sensing portion protruding from the back side 12A under the action of the force toward the side surface 91 . 30A abuts the side 91 to facilitate liquid fuel capacity detection.

In an embodiment, optionally, the liquid fuel capacity detection device 1A further includes a groove portion 60A, the groove portion 60A is disposed on the back side 12A, and is used for matching a welding on the side surface 91 . The bead 92 is arranged to facilitate the liquid fuel capacity detection device 1 to be arranged at the position where the bead 92 of the side surface 91 is guided. In this embodiment, the weld bead 92 protrudes below the side surface 91 of the liquid fuel container 90 ; alternatively, this position can be used as a position on the side surface of the liquid fuel container to be detected as a criterion for determining the remaining amount. Therefore, when installing the liquid fuel capacity detection device 1A on the side surface 91 of the liquid fuel container 90, the technician can easily and based on the welding bead 92 as the installation position, so that the welding bead 92 corresponds to the concave The groove portion 60A is used to complete the basic installation operation.

Certainly, the realization of the present invention is not limited by the above examples; even if the liquid fuel container 90 is not provided with a welding bead or the welding bead is not protruding from the side surface 91 , it does not affect the realization of the liquid fuel capacity detection device 1A.

Please refer to FIG. 2B , which is a schematic diagram of another embodiment of the liquid fuel capacity detection device 1 based on FIG. 1 . In FIG. 2B , the liquid fuel capacity detection device 1B is an embodiment based on the structure of FIG. 1 , and in addition to the components corresponding to the liquid fuel capacity detection device 1 , it further includes a magnetic attraction portion 50B, which magnetically attracts The part 50B also has a magnetic body and is disposed on the back side 12B opposite to the front side 11B or close to the back side 12B. The magnetic attraction part 50B is used to allow the liquid fuel capacity detection device 1B to pass through the magnetic attraction part 50B. When adsorbed on the side surface 91 of a liquid fuel container 90 , the liquid fuel capacity detecting device 1B is placed on the side surface 91 by the force toward the side surface. Compared with the liquid fuel capacity detection device 1A in FIG. 2A , the fulcrum portion 20B and the magnetic attraction portion 50B of the liquid fuel capacity detection device 1B are separately disposed on the back side 12B, and the fulcrum of the liquid fuel capacity detection device 1B is The portion 20B and the sensing portion 30B are disposed below and above the back side 12B, respectively.

In an embodiment of the present invention, the groove portion (eg, 60A or 60B) is disposed between the fulcrum portion (eg, 20A or 20B) and the sensing portion (eg, 30A or 30B).

In addition, based on the structure of FIG. 1A and FIG. 1B or referring to the embodiment of FIG. 2A or FIG. 2B , in some embodiments, the liquid fuel capacity detection device can be implemented by disposing the fulcrum part and the sensing part on the back side and using various The arrangement of the upper and lower relative positions, as long as the arrangement is such that when the liquid fuel capacity detection device is subjected to a force toward the side of the liquid fuel container, which is a metal container, it passes through the back side and rests on the side. When facing, the back side uses the fulcrum part as the fulcrum to form a lever structure. Under the action of the force toward the side, the sensing part protruding from the back side is close to the side, which can be used as the liquid fuel capacity detection device. Method to realize.

Please refer to FIG. 3A , which is a schematic diagram of an embodiment in which the liquid fuel capacity detection device 1C based on FIG. 1 is disposed in the liquid fuel container 90 . As shown in FIG. 3A , the liquid fuel capacity detection device 1C (such as 1A or 1B) based on FIG. 1 and provided with a magnetic attraction part can be adsorbed on the side surface 91 of the liquid fuel container 90 through its own magnetic attraction part to The liquid fuel capacity detection device 1C is forced toward the side surface 91 to facilitate the detection of the liquid fuel capacity.

In some embodiments, an external mechanism may be utilized to generate a force toward the side of the liquid fuel container and apply the liquid fuel capacity detection device based on FIG. 1 . Please refer to FIG. 3B , which is a schematic diagram of another embodiment of the liquid fuel capacity detection device 1D disposed in the liquid fuel container 90 based on FIG. 1 . As shown in FIG. 3B , the liquid fuel capacity detection device 1D (eg, 1 , 1A or 1B) based on FIG. 1 can be bound on the side surface 91 of the liquid fuel container 90 through the strap 100 . The force toward the side of the liquid fuel container is generated by the pulling force of the strap 100 and applied to the detection device 1D based on the liquid fuel capacity.

Optionally, the liquid fuel capacity detection device 1D may also be provided with a magnetic attraction portion.

Optionally, when the liquid fuel capacity detection device is implemented based on FIG. 1, one or a combination of two or more of various applicable forces such as adhesive force or adsorption force can be further or simultaneously used to realize the liquid fuel. The force on the side 91 of the container 90 is applied to the liquid fuel capacity detection device (eg 1C or 1D).

FIG. 3C is a schematic diagram of yet another embodiment of the liquid fuel capacity detection device based on FIG. 1 . As shown in FIG. 3C , the liquid fuel capacity detection device 1E based on FIG. 1 may be further configured with a A mechanism (such as a ring; or other suitable structures such as hooks, grooves, etc.) is used to bind the liquid fuel capacity detection device 1E to the side surface 91 .

In some embodiments, when implementing the liquid fuel capacity detection device (eg, 1, 1A, 1B, 1C, 1D, 1E) based on FIG. 1 , various methods such as tenon, sticking, suction cup and other joining methods can be used. One or a combination of two or more to achieve the force toward the side 91 of the liquid fuel container 90 and apply the liquid fuel capacity detection device. Optionally, the embodiments of the aforementioned liquid fuel capacity detection device (such as 1, 1A, 1B, 1C or 1D) can also be changed or used simultaneously with one or both of other methods such as tenon, sticking, suction cup, etc. The combination of the above achieves a force towards the side 91 of the liquid fuel container 90 . For example, when the liquid fuel capacity detection device is implemented based on FIG. 1 , a joint portion may be provided on the back side thereof, and the joint portion may include at least one of a tenon, a sticking area, or a suction cup. In some embodiments, corresponding concave and convex components may be respectively implemented on the back side of the liquid fuel capacity detection device based on FIG. 1 and the side surface 91 of the liquid fuel container 90 , thereby realizing the tenon.

In one embodiment, the sensing portion (eg 30 , 30A or 30B) of the liquid fuel capacity detection device based on FIG. 1 may further have an elastic layer, when the sensing portion is close to the side (eg 91 ) When the elastic layer is used to facilitate the detection of the liquid fuel capacity. Please refer to FIG. 4 , which is a schematic diagram of an embodiment of the backside of the liquid fuel capacity detection device based on FIG. 1 . As shown in FIG. 4 , the liquid fuel capacity detection device 1F is based on the liquid fuel capacity detection device 1A of FIG. 2A , and an elastic layer 32F is exposed at the exposed position of the sensing portion protruding from the back side of the liquid fuel capacity detection device 1F. The elastic layer 32F is, for example, an elastic sheet made of silicon rubber, which can improve frictional force, so that the sensing portion and the side surface of the liquid fuel container have a better bonding effect. For example, when the sensor of the sensing part is an ultrasonic sensor, the elastic layer 32F can improve the effect of guiding the wave, and then cooperate with the lever structure on the back side of the liquid fuel capacity detection device based on FIG. 1 (such as With the fulcrum portion 20F), the effect of enhancing the detection of the liquid fuel capacity can be obtained.

In another embodiment, the sensing portion (eg, 30 , 30A, or 30B) of the liquid fuel volume detection device based on FIG. 1 can also use an adhesive to improve the effect of wave guiding. For example, when installing the liquid fuel capacity detection device, the sensing portion or the side surface of the liquid fuel container is coated with adhesive, and the sensing portion is joined to the side surface. In some embodiments, the aforementioned elastic layer and adhesive can also be used together.

In some embodiments, the control circuit (40 in FIG. 1 ) based on the liquid fuel capacity detection device in FIG. 1 is used to generate the wireless report signal to an external device through various wireless communication methods, such as using Bluetooth, ZigBee , NBIoT, LoRA, SigFox, CAT-M1, LTE, 4G, 5G or WiFi and other communication standards. For example, the external device can be configured as a mobile device, personal or notebook computer, server, base station or gateway and other computing devices with wireless communication functions, after receiving the wireless report signal, it can further data processing for various applications based on detected capacity data. For example, liquid fuel suppliers can notify users that new liquid fuels (such as gas and petroleum gas) can be distributed based on the detected capacity data, or users can The device or computing device knows whether the liquid fuel has reached a threshold of consumption.

FIG. 5 is a circuit block diagram of an embodiment of the liquid fuel capacity detection device based on FIG. 1 . As shown in FIG. 5 , the control circuit 500 based on the liquid fuel capacity detection device of FIG. 1 includes a control module 510 and a wireless communication module 520 . The control module 510 is electrically coupled to the sensor 31 and used to control the sensor 31 to detect the liquid fuel capacity. The wireless communication module 520 is electrically coupled to the sensor 31 and generates the wireless reporting signal to an external device according to the liquid fuel capacity detection. Control circuit 500 may be implemented using one or more circuits, such as microcontrollers, processors, or digital signal processors, and may be based on the use of a field programmable gate array (FPGA), or specific It can be realized by one or more circuits such as application specific integrated circuit (ASIC) or complex programmable logic device (CPLD). way or module to achieve. The wireless communication module 520 can be implemented by a communication circuit or chip supporting at least one or more communication standards such as Bluetooth, ZigBee, NBIoT, LoRA, SigFox, CAT-M1, LTE, 4G, 5G or WiFi. In addition, the control module 510 and the wireless communication module 520 can also be implemented with a single chip.

In addition, the control circuit 500 may further include an interface module 530 , and the interface module 530 is electrically coupled to the control module 510 . Please refer to FIG. 6 , which is a schematic diagram of an embodiment of the front side of the liquid fuel capacity detection device based on FIG. 1 . In FIG. 6 , for example, an interface module 530 , such as buttons 600 , display lights (eg, LEDs) 610 , can be provided on the front side of the liquid fuel capacity detection device based on FIG. 1 as an interface for interacting with the user. For example, the liquid fuel capacity detection device can be configured such that after pressing the button 600, the liquid fuel capacity detection device is activated and initialized, and performs preliminary detection. The liquid fuel capacity detection device uses the indicator light 610 to glow green to indicate that it is normal and starts to operate; if the detection result is abnormal or it cannot communicate with the external device wirelessly, the liquid fuel capacity detection device to the indicator light 610 to light up red to indicate abnormality as a warning.

In addition, about the above-mentioned fulcrum part, another example is mentioned as follows.

Please refer to FIGS. 7A to 7D , which are schematic diagrams of some embodiments of the fulcrum portion of the liquid fuel capacity detection device based on FIG. 1 .

As shown in FIG. 7A , the illustrated fulcrum portion has a protrusion 701 , and may be configured to have a curvature to match the side surface 91 of the liquid fuel container 90 .

As shown in FIG. 7B , the illustrated fulcrum portion has two protrusions 702 , and can be configured to have a curvature to match the side surface 91 of the liquid fuel container 90 .

As shown in FIG. 7C , the illustrated fulcrum portion has three protrusions 703 , and can be configured to be arranged on a curved surface to match the side surface 91 of the liquid fuel container 90 .

As shown in FIG. 7D , the illustrated fulcrum portion has two protrusions 704 , which can be arranged on the left and right sides of the curved surface to match the side surface 91 of the liquid fuel container 90 .

In addition, in some embodiments, the plurality of protrusions of the fulcrum portion can also be configured to be arranged on a flat surface, and the outwardly facing surface of the protrusions has an oblique angle or an arc to match the side surface of the liquid fuel container 90 .

In some embodiments of the present invention, the liquid fuel capacity detection device based on FIG. 1 can be configured to be suitable for various applicable liquid fuel containers, such as liquefied petroleum gas gas barrels.

As mentioned above, in the embodiment of the liquid fuel capacity detection device, when the sensor is implemented by an ultrasonic sensor, under the action of the aforementioned lever structure, the sensing portion obtains a pressure close to the side surface. The force acts, so that the echo received by the sensing part has good quality, that is, it can stably and accurately reflect the actual measurement result. In this way, the liquid fuel capacity detection device is more practical and accurate.

In addition, the embodiment of the liquid fuel capacity detection device based on FIG. 1 is convenient to be installed in various applicable liquid fuel containers, such as liquefied petroleum gas gas barrels. The liquid fuel capacity detection device can grasp the remaining amount in the gas barrel so as to know the replacement time and reduce the residual waste in time. This is especially true for users of larger-capacity gas barrels that weigh gas. In addition, the above-mentioned liquid fuel capacity detection device can further promote the monitoring of the remaining amount of the user by the network and cloud system, and the effect of timely reminding the user and managing the delivery.

The present creation has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present creation, and should not be construed as limiting the scope of the present creation. It should be noted that all changes and substitutions equivalent to these embodiments should be set to be included in the scope of this creation. Therefore, the scope of protection of this creation shall be determined by the scope of the patent application.

1: Liquid fuel capacity detection device

10: Shell

11: Front side

12: back side

13: accommodating space

20: Fulcrum

30: Sensing part

31: Sensor

40: Control circuit

90: Liquid fuel container

91: Side

F: Force towards the side

Claims (10)

A liquid fuel capacity detection device is used to detect the liquid fuel capacity of a liquid fuel container, the liquid fuel capacity detection device comprises: a casing with a front side and a back side facing away from the front side, and provide an accommodating space; a fulcrum part has at least one protrusion, the fulcrum part is protrudingly disposed on the back side; a sensing part has a sensor, the sensing part at least partially protrudes from the back side; a control circuit, disposed in the accommodating space and electrically coupled to the sensor, for controlling the sensor to detect the liquid fuel capacity, and to generate a wireless report signal to an external device accordingly; wherein The liquid fuel capacity detection device is configured to detect the liquid fuel capacity of the liquid fuel container through the back side, wherein the liquid fuel container is a metal container, when the liquid fuel capacity detection device is subjected to a direction toward the liquid fuel When the force of one side of the container passes through the back and rests on the side, the back uses the fulcrum portion as a fulcrum to form a lever structure, and the lever structure is under the action of the force toward the side, so that the protruding The sensing portion on the back side abuts on the side surface. The liquid fuel capacity detection device as claimed in claim 1, wherein the sensor is an ultrasonic sensor. The liquid fuel capacity detection device as claimed in claim 1, wherein the liquid fuel capacity detection device further comprises a magnetic attraction portion, the magnetic attraction portion has a magnetic body and is disposed on or near the back side, the The magnetic attraction part is used to make the liquid fuel capacity detection device rest on the side surface by the force toward the side surface when the liquid fuel capacity detection device is adsorbed on the side surface through the magnetic attraction part. The liquid fuel capacity detection device according to claim 3, wherein the magnetic attraction portion is disposed on the fulcrum portion. The liquid fuel capacity detection device according to claim 3, wherein the magnetic attraction part and the fulcrum part are detachably arranged. The liquid fuel capacity detection device as claimed in claim 1, wherein the liquid fuel capacity detection device further comprises a groove portion, and the groove portion is disposed on the back side. The liquid fuel capacity detection device according to claim 6, wherein the groove portion is disposed between the fulcrum portion and the sensing portion. The liquid fuel capacity detection device according to claim 1, wherein the sensing portion further has an elastic layer, and the elastic layer is used for abutting against the side surface. The liquid fuel capacity detection device as claimed in claim 1, wherein the control circuit is configured to generate the wireless report signal to the communication via Bluetooth, ZigBee, NBIoT, LoRA, SigFox, CAT-M1, LTE, 4G, 5G or WiFi. external device. The liquid fuel capacity detection device as claimed in claim 1, wherein the front side is configured to be suitable for binding a strap on the side surface of the liquid fuel container.

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