System for preventing abnormal loss of fuel oil and engineering machinery
By using level and pressure sensors to detect abnormal fuel loss in construction machinery, combined with controllers and alarm devices, the problems of high cost and false alarms in existing technologies are solved, achieving low-cost and accurate fuel loss detection and prevention of abnormal fuel loss.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2026-03-24
AI Technical Summary
Existing fuel consumption alarm systems are costly and prone to false alarms, especially when construction machinery is shaking, making it difficult to effectively prevent fuel theft or accidental leaks.
By using existing liquid level and pressure sensors in engineering machinery, combined with controllers and alarm devices, the system detects the drop in fuel level and oil pressure when the machine is stopped. It judges the risk of abnormal loss by setting thresholds and activates alarm devices and sends notifications when necessary.
It achieves low-cost and accurate detection of abnormal fuel loss, avoids false alarms, effectively prevents fuel theft or leakage, and warns operators or fuel thieves when necessary.
Smart Images
Figure CN121719643A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of construction machinery and control technology, and in particular, to a system for preventing abnormal loss of fuel and a construction machinery. BACKGROUND
[0002] With the intensification of mining, construction machinery is developing towards large-scale, and the large-scale of construction machinery inevitably makes the volume of the fuel tank become larger and larger. However, with the increasing scarcity of energy resources, the price of fuel is rising, and therefore, how to avoid abnormal loss of fuel (for example, fuel theft or accidental oil leakage) becomes very important to the user of the construction machinery.
[0003] Currently, the existing fuel abnormal loss alarm system needs to additionally install a sensing device (for example, a theft-proof sensor) which is expensive, and therefore, the cost is high. In addition, in the case of shaking of the construction machinery, false alarms may also occur. SUMMARY
[0004] The present disclosure is directed to providing a system for preventing abnormal loss of fuel and a construction machinery, thereby solving at least one of the above problems in the prior art.
[0005] An embodiment of the present disclosure provides a system for preventing abnormal loss of fuel, the system comprising a liquid level sensor and / or a pressure sensor provided on a construction machinery, a controller, and an alarm device, the liquid level sensor and / or the pressure sensor being provided in a fuel tank of the construction machinery, wherein,
[0006] the liquid level sensor detects liquid level information of fuel in the fuel tank,
[0007] the pressure sensor detects oil pressure information of fuel in the fuel tank,
[0008] in the case that the engine of the construction machinery is in a shutdown state, the controller acquires the liquid level information from the liquid level sensor and / or the oil pressure information from the pressure sensor, and in the case that a decrease amplitude of at least one of the liquid level and the oil pressure in a set time period is greater than a set threshold value, the controller determines that there is a risk of abnormal loss of fuel and starts the alarm device.
[0009] Optionally, in the case that the decrease amplitude of the liquid level in the set time period is greater than a set liquid level decrease amplitude threshold value, the controller determines that there is a risk of abnormal loss of fuel and starts the alarm device.
[0010] Optionally, in the case that the decrease amplitude of the oil pressure in the set time period is greater than a set oil pressure decrease amplitude threshold value, the controller determines that there is a risk of abnormal loss of fuel and starts the alarm device.
[0011] Optionally, in the case that the amplitude of the decrease of the liquid level in the set time period is greater than a set liquid level decrease amplitude threshold and the amplitude of the decrease of the oil pressure in the set time period is greater than a set oil pressure decrease amplitude threshold, the controller determines that there is a risk of abnormal fuel consumption and starts the alarm device.
[0012] Optionally, the alarm device comprises at least one of the following: a buzzer, a warning light.
[0013] Optionally, the system further comprises a communication device arranged on the engineering machine, and in the case that the controller determines that there is a risk of abnormal fuel consumption, the controller sends risk notification information to a mobile terminal device of an operator through the communication device.
[0014] Optionally, the system further comprises a dashboard arranged on the engineering machine, the dashboard identifies an operator and sends message information to the controller in the case that the identification is passed; in the case that the message information from the dashboard is received, the controller stops detecting abnormal fuel consumption until the login state of the operator is cancelled.
[0015] Optionally, the dashboard identifies the operator by any one of the following: password verification, fingerprint identification, face recognition.
[0016] Optionally, the inside of the fuel tank is provided with a hollow cylindrical structure, at least one communication hole is arranged at the upper and lower parts of the hollow cylindrical structure, the liquid level sensor is arranged inside the hollow cylindrical structure, and the inner diameter of the hollow cylindrical structure is greater than the outer diameter of the float of the liquid level sensor.
[0017] According to still another aspect of the present disclosure, an engineering machine is provided, which comprises the system for preventing abnormal fuel consumption provided by the present disclosure.
[0018] The system for preventing abnormal fuel consumption and the engineering machine of the embodiments of the present disclosure have at least the following advantages:
[0019] In the present disclosure, the liquid level sensor and / or the pressure sensor which are necessary in the fuel tank of the engineering machine are used to realize the detection of the risk of abnormal fuel consumption, without the need of additionally installing expensive sensing devices, so that the detection of abnormal fuel consumption can be realized at low cost.
[0020] In the present disclosure, in the case that the engineering machine is in a shutdown state, the decrease amplitude of at least one of the liquid level and the oil pressure of the fuel in the fuel tank in a set time period is compared with a set threshold value, so that it can be accurately judged whether the fuel in the fuel tank is abnormally consumed.
[0021] In the present disclosure, in the case where there is a risk of abnormal loss of fuel, an audible and visual alarm is generated by the alarm device, so as to warn the operator of the construction machine present on site of the risk of abnormal loss of fuel or to warn the fuel thief to stop the stealing behavior.
[0022] In the present disclosure, in the case where there is a risk of abnormal loss of fuel, risk notification information is sent to the mobile terminal device of the operator by the communication device, so as to warn the operator of the construction machine not present on site of the risk of abnormal loss of fuel.
[0023] In the present disclosure, in the case where the identity recognition performed by the instrument panel on the operator is passed, the controller stops detecting the abnormal loss of fuel, so as to avoid false alarms caused by normal loss of fuel due to normal operation of the construction machine or false alarms caused by active operation of the operator on the fuel tank.
[0024] In the present disclosure, a hollow cylindrical structure with a communication hole is arranged inside the fuel tank, and the liquid level sensor is arranged inside the hollow cylindrical structure, so that the liquid level of the fuel in the hollow cylindrical structure remains stable when the construction machine is in a non-working state, avoiding false alarms of the liquid level sensor. BRIEF DESCRIPTION OF DRAWINGS
[0025] Other details and advantages of the present disclosure will become apparent from the detailed description provided below. It should be understood that the following drawings are merely schematic and not drawn to scale, and therefore should not be considered as limiting the present disclosure, which will be described in detail below with reference to the accompanying drawings, in which:
[0026] Figure 1 A system for preventing abnormal loss of fuel according to one embodiment of the present disclosure is shown.
[0027] Figure 2 A workflow diagram of a system for preventing abnormal loss of fuel according to another embodiment of the present disclosure is shown.
[0028] Figure 3 A fuel tank provided with a hollow cylindrical structure according to yet another embodiment of the present disclosure is shown. DETAILED DESCRIPTION
[0029] Embodiments of the present disclosure are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that the present disclosure can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present disclosure. In addition, it will be understood that the present disclosure is not limited in its application to the particular implementation taught in the description below. Rather, the present disclosure is capable of implementation in any combination of the features and elements set forth below, regardless of whether the features and elements are related to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are merely illustrative and are not exhaustive.
[0030] Reference will now be made to Figure 1 , which shows a system for preventing abnormal fuel loss according to one specific embodiment of the present disclosure.
[0031] As shown in Figure 1 , the system comprises a dashboard 1, a controller 2, a communication device 3, a liquid level sensor and / or pressure sensor 4, a relay 5, a relay 6, a buzzer 7 and a warning light 8, which are arranged on the construction machine.
[0032] The dashboard 1 is used for identity recognition of the operator and can be used to display the amount of fuel in the fuel tank. It is understood by those skilled in the art that any suitable way can be used for identity recognition, including but not limited to password verification, fingerprint recognition, face recognition, which do not exceed the protection scope of the present disclosure. In the case of passing identity recognition, the dashboard 1 sends a message to the controller 2.
[0033] The liquid level sensor and / or pressure sensor 4 is arranged in the fuel tank of the construction machine. The liquid level sensor is used to detect the liquid level information of the fuel in the fuel tank, and different liquid levels output different resistance values, and the resistance value output by the liquid level sensor will become smaller when the liquid level decreases. The pressure sensor is used to detect the oil pressure information of the fuel in the fuel tank.
[0034] When the engine of the construction machine is in a shutdown state, the controller 2 acquires the liquid level information from the liquid level sensor and / or the oil pressure information from the pressure sensor. In the case that the decrease of at least one of the liquid level and the oil pressure in a set time period is greater than a set threshold value, the controller 2 determines that there is a risk of abnormal fuel loss and starts the buzzer 7 and the warning light 8 by controlling the relays 5 and 6, so that the buzzer 7 emits a buzzing sound and / or the warning light 8 flashes.
[0035] Among them, whether there is a risk of abnormal fuel loss can be determined by any one of the following three ways:
[0036] 1. If the liquid level decreases by more than a set liquid level decrease threshold within a set time period, the controller 2 determines that there is a risk of abnormal fuel loss;
[0037] 2. If the oil pressure decreases by more than a set oil pressure decrease threshold within a set time period, the controller 2 determines that there is a risk of abnormal fuel loss;
[0038] 3. If the liquid level decreases by more than a set liquid level decrease threshold within a set time period and the oil pressure decreases by more than a set oil pressure decrease threshold within a set time period, the controller 2 determines that there is a risk of abnormal fuel loss.
[0039] It is understood by those skilled in the art that the specific values of the liquid level decrease threshold and the oil pressure decrease threshold can be set according to actual conditions by those skilled in the art, and these variations do not exceed the protection scope of the present disclosure.
[0040] In addition, in the case where the controller 2 determines that there is a risk of abnormal fuel loss, the controller 2 can also send risk notification information to the mobile terminal device of the operator through the communication device 3.
[0041] The controller 2 can detect the message information from the instrument panel 1 at regular intervals. In the case where the message information from the instrument panel 1 is received, the controller stops detecting abnormal fuel loss until the login state of the operator is released (for example, the operator actively releases the login state through the instrument panel 1, or the operator is released from the login state due to long time of inaction). Thus, false alarms caused by normal loss of fuel due to normal operation of the construction machinery or false alarms caused by active operation of the operator on the fuel tank (for example, the operator actively takes out fuel in the fuel tank) can be avoided.
[0042] Based on Figure 1 the principle of the system for preventing abnormal fuel loss shown, Figure 2 a workflow diagram of the system for preventing abnormal fuel loss according to another specific embodiment of the present disclosure is schematically shown.
[0043] As Figure 2 shown, first, the controller (for example, the vehicle controller) of the construction machinery judges whether the message information from the instrument panel is received. If the judgment result is yes, the process ends; if the judgment result is no, the controller records the resistance value detected by the liquid level sensor as y1, waits for a set time T, and then records the resistance value detected by the liquid level sensor as y2. Then, the controller judges whether the difference obtained by subtracting y2 from y1 is greater than a set value x. If the judgment structure is no, the process ends; if the judgment result is yes, the controller determines that there is a risk of abnormal fuel loss and takes corresponding measures.
[0044] Figure 3 A fuel tank provided with a hollow cylinder structure according to still another embodiment of the present disclosure is shown.
[0045] As shown in Figure 3 , the inside of the fuel tank is provided with a hollow cylinder structure, the upper and lower portions of the hollow cylinder structure are each provided with a communication hole, a liquid level sensor is arranged inside the hollow cylinder structure, and the inner diameter of the hollow cylinder structure is greater than the outer diameter of the float of the liquid level sensor. By means of the hollow cylinder structure, the liquid level of the fuel in the hollow cylinder structure can be kept stable when the engineering machinery is in a non-working state (for example, during the transfer of the engineering machinery), so as to avoid false alarms of the liquid level sensor. In addition, as shown in Figure 3 , a pressure sensor can also be arranged in the hollow cylinder structure. Although Figure 3 the upper and lower portions of the hollow cylinder structure are each provided with a communication hole, a suitable number of communication holes can also be arranged at any suitable position of the hollow cylinder structure according to actual conditions, and these variants are also within the protection scope of the present disclosure.
[0046] In the exemplary embodiments of the present disclosure, an engineering machinery is also provided, which comprises the system for preventing abnormal loss of fuel provided by the present disclosure. The system of the present disclosure can be applied to any type of engineering machinery, such as excavators, bulldozers, cranes, road rollers, etc., and these variants are also within the protection scope of the present disclosure.
[0047] Industrial applicability
[0048] In the present disclosure, the liquid level sensor and / or the pressure sensor which are essential in the fuel tank of the engineering machinery are used to realize the detection of the risk of abnormal loss of fuel, without the need for additional installation of expensive sensing devices, so as to realize the detection of abnormal loss of fuel at low cost.
[0049] In the present disclosure, in the case where the engineering machinery is in a shutdown state, by comparing the decrease amplitude of at least one of the liquid level and the oil pressure of the fuel in the fuel tank within a set time period with a set threshold value, it is possible to accurately judge whether the fuel in the fuel tank is subject to abnormal loss.
[0050] In the present disclosure, in the case where there is a risk of abnormal loss of fuel, an audible and visual alarm is generated by the alarm device, so as to warn the operator of the engineering machinery on site of the risk of abnormal loss of fuel or to warn the oil thief to stop the stealing behavior.
[0051] In this disclosure, when there is a risk of abnormal fuel consumption, a risk notification message is sent to the operator's mobile terminal device via a communication device, thereby warning the operator of the construction machinery who is not on site of the risk of abnormal fuel consumption.
[0052] In this disclosure, once the instrument panel successfully identifies the operator, the controller stops detecting abnormal fuel consumption, thereby avoiding false alarms caused by normal fuel consumption due to the normal operation of the construction machinery or by the operator's active operation of the fuel tank.
[0053] In this disclosure, the fuel tank has a hollow cylindrical structure with a connecting hole inside, and the liquid level sensor is installed inside the hollow cylindrical structure. This ensures that the fuel level in the hollow cylindrical structure remains stable when the construction machinery is not in operation and there is shaking, thus avoiding false alarms from the liquid level sensor.
[0054] While this disclosure has been described above with reference to preferred embodiments, it is not limited thereto. Any modifications and alterations made by those skilled in the art without departing from the spirit and scope of this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.
Claims
1. A system for preventing abnormal fuel consumption, characterized in that, The system includes a liquid level sensor and / or pressure sensor, a controller, and an alarm device installed on the construction machinery. The liquid level sensor and / or pressure sensor is installed inside the fuel tank of the construction machinery. The level sensor detects the fuel level in the fuel tank. The pressure sensor detects the fuel pressure information in the fuel tank. When the engine of the construction machinery is stopped, the controller acquires liquid level information from the liquid level sensor and / or oil pressure information from the pressure sensor. If the drop in at least one of the liquid level and oil pressure is greater than a set threshold within a set time period, the controller determines that there is a risk of abnormal fuel loss and activates the alarm device.
2. The system according to claim 1, wherein, If the drop in liquid level within a set time period exceeds a set threshold for the drop in liquid level, the controller determines that there is a risk of abnormal fuel loss and activates the alarm device.
3. The system according to claim 1, wherein, If the oil pressure drops more than a set oil pressure drop threshold within a set time period, the controller determines that there is a risk of abnormal fuel loss and activates the alarm device.
4. The system according to claim 1, wherein, If the drop in liquid level within a set time period exceeds a set liquid level drop threshold and the drop in oil pressure within a set time period exceeds a set oil pressure drop threshold, the controller determines that there is a risk of abnormal fuel loss and activates the alarm device.
5. The system according to claim 1, wherein, The alarm device includes at least one of the following: a buzzer, a warning light.
6. The system according to claim 1, wherein, The system also includes a communication device installed on the construction machinery. If the controller determines that there is a risk of abnormal fuel loss, the controller sends a risk notification message to the operator's mobile terminal device through the communication device.
7. The system according to claim 1, wherein, The system also includes an instrument panel installed on the construction machinery. The instrument panel identifies the operator and sends a message to the controller if the identification is successful. Upon receiving the message from the instrument panel, the controller stops detecting abnormal fuel consumption until the operator's login status is deactivated.
8. The system according to claim 1, wherein, The dashboard identifies the operator using any of the following methods: password verification, fingerprint recognition, or facial recognition.
9. The system according to claim 1, wherein, The fuel tank has a hollow cylindrical structure inside, with at least one connecting hole at the top and bottom of the hollow cylindrical structure. The liquid level sensor is located inside the hollow cylindrical structure, and the inner diameter of the hollow cylindrical structure is larger than the outer diameter of the float of the liquid level sensor.
10. An engineering machine, the engineering machine comprising a system for preventing abnormal fuel consumption according to any one of claims 1-9.